JP3576006B2 - Audio-video editing system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an audio-video editing system for digitally editing audio and video from a digital VTR using a memory disk such as a hard disk as a recording medium.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a digital VTR for editing audio and video recorded on a recording medium by a digital VTR that digitally records and reproduces audio and video on a recording medium, such as a stationary or camera-integrated digital VTR, has been used. An audio-video editing system that can reproduce audio and video by using a memory disk such as a hard disk, which is another recording medium, and digitally edit the audio and video.
[0003]
In such a conventional audio / video editing system, as shown in FIG. 5, a digital VTR (DVC) 500 and a personal computer (personal computer) P1 are connected to a single bus line (audio and video standardized by IEEE 1394). A digital stream bus, which is hereinafter simply referred to as an IEEE 1394 bus B1), and an AV digital stream signal including an audio (sound) digital stream signal and a video (video) digital stream signal which are DVC-compressed by the DVC 500, respectively. , A digital signal capable of inputting / outputting all digital data including a command for controlling the DVC 500 and a control signal including a status signal of the DVC 500 to and from the IEEE 1394 bus B1. And a interface and its interface circuit.
[0004]
When the user performs a personal computer operation for editing, under the control of the CPU 501, an AV digital stream signal is transmitted from the DVC 500 to the personal computer P1 through the IEEE1394 bus B1, and the AV digital stream signal is transmitted to the personal computer P1. A hard disk (HDD) via a 1394-I / F board I1 in which a digital interface and its interface circuit are configured, via a PCI bus B2 which is an internal bus in the personal computer P1, and further via an HDD I / F 502 503 is recorded.
[0005]
As described above, the AV digital stream signal is composed of the audio digital stream signal and the video digital stream signal, and has a continuous signal form on the IEEE1394 bus B1. For example, in the editing system using the personal computer P1 as described above, Non-linear editing is adopted as an editing method. When data is recorded on the HDD 503, various data are recorded on the HDD 503 in various places on the HDD 503 depending on the situation at that time.
[0006]
Therefore, it is difficult to continuously record the AV digital stream signal on the IEEE 1394 bus B1 on the HDD 503, and the recording is discontinuous.
[0007]
Thereafter, when the user subsequently operates the personal computer, an AV digital stream signal is reproduced from the HDD 503 under the control of the CPU 501, and the AV digital stream signal is transmitted to the 1394 via the HDD I / F 502 and the PCI bus B2. -Sent to the DVC 500 via the IEEE1394 bus B1 via the I / F board I1 and the digital interface, decoded by a codec (not shown) provided in the DVC 500, converted into an analog video signal, and then connected. It is added to the monitor TV 504 through the cable K1.
[0008]
Then, when the user determines the program of the edit cut-in point (start point) and the edit cut-out point (end point) by operating the personal computer while monitoring the reproduced image of the monitor TV 504, the CPU 501 controls the program. The above program is displayed as an edit list on a display monitor D1 for a personal computer via the graphics board G1, and an AV digital stream signal is edited and reproduced from the HDD 503 according to the program. While temporarily stored in the memory (MEM) 505 via the F502 and the PCI bus B2, the DVC5 via the IEEE1394 bus B1 via the 1394-I / F board I1 and the digital interface via the PCI bus B2 again. Sent to 0, it is recorded in a state in which audio and video has been edited in DVC500.
[0009]
Thus, the audio and video recorded on the recording medium by the DVC 500 are edited.
[0010]
[Problems to be solved by the invention]
However, in the above-described conventional audio / video editing system, editing of audio and video from the DVC 500 is performed by the personal computer P1 using the HDD 503, and the personal computer P1 takes only the AV digital stream signal into the HDD 503. However, there has been a problem that the speed of the internal bus, the speed of the HDD 503, the speed of the HDD I / F 502, etc. are required, and the cost as an editing system is increased.
[0011]
Also, since various data other than the AV digital stream signal are recorded in various places on the HDD 503 in the HDD 503 of the personal computer P1, the AV digital stream signal may be a continuous AV digital stream signal on the IEEE 1394 bus B1, On top of that, it is difficult to record continuously, and the AV digital stream signal recorded in such a manner becomes inevitably discontinuous at the time of reproduction, and a retry operation for preventing recording errors at the time of recording. Therefore, there is also a problem that editing of audio and video from the DVC 500 becomes inefficient in time.
[0012]
SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. It is possible to edit audio and video from a digital VTR at lower cost and more efficiently than before, and to speed up the editing. Provide an audio-video editing system that can do it.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the audio-video editing system of the present invention provides a method for editing audio and video from a digital VTR using a memory disk in a memory disk device having the memory disk. By directly interfacing with a stream bus standardized for audio and video, a recording area for audio and video digital stream signals on a memory disk is provided so that the recording positions of these digital stream signals are continuous. Set, record only the digital stream signal in the area, maintain the continuity of data at the time of recording and reproduction with respect to the digital stream signal, and enable editing as a stream signal in the digital signal state It is characterized by the following.
[0014]
As described above, the editing of the audio and video from the digital VTR can be performed at lower cost and more efficiently than before, and the editing can be speeded up.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
The audio-video editing system according to claim 1, wherein the audio-video editing system digitally records and reproduces audio and video on and from a recording medium, and a memory having a memory disk that is a recording medium different from the recording medium A disk device, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, and the digital VTR is connected to the digital VTR through the stream bus. An audio-video editing system for digitally editing audio and video input from a VTR to a memory disk device using the memory disk, wherein the digital VTR is used as a digital stream signal for the audio and video. , A DVC-compressed audio digital signal output from the digital VTR Corresponds to an AV / subcode digital stream signal composed of a stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, and a control signal composed of a command for controlling the digital VTR and a status signal of the digital VTR. All data to be input / output to / from the stream bus in a predetermined manner, and a bus interface circuit for input / output of the data by the bus interface. Directly connected to the stream bus, all data corresponding to the AV / subcode digital stream signal and control signal can be input / output to / from the stream bus according to the predetermined method. Bus interface means, and disk interface means capable of recording and reproducing all data corresponding to the AV / subcode digital stream signal and the control signal from the bus interface means on the memory disk in frame units of video signals. An interface control means for operating and controlling the bus interface means and the disk interface means by the control signal; an analog audio input means for inputting only an analog audio signal which is audio information in the form of an analog signal; and the analog audio input means An A / D converter for converting an analog audio signal from the A / D converter into a digital audio signal; an encoder for DV-compressing the digital audio signal from the A / D converter to convert it into a PCM audio signal; Recording means for recording a PCM audio signal obtained from a coder on the memory disk through the disk interface means. The interface control means controls and operates the digital VTR and the memory disk device, and outputs data from the digital VTR. All or a part of the AV / subcode digital stream signal is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced and the AV / subcode digital stream is recorded. A signal is sent to the digital VTR through the disk interface means and the bus interface means and the stream bus, and a decoder provided in the digital VTR is provided. The VTR codec decodes the AV / subcode digital stream signal and converts it into an analog video signal, adds the analog video signal to a monitor TV, and starts editing while monitoring a reproduced image by the monitor TV. A program of a cut-in point, which is a point, and a cut-out point, which is an end point of editing, is determined, and the interface control means performs editing while reproducing the AV / subcode digital stream signal from the memory disk according to the program. After editing the AV / sub-code digital stream signal, when re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the memory disk, the memory disk device uses Analog voice The analog audio signal input from the input means is converted into the PCM audio signal by the A / D converter, the encoder and the recording means and recorded as an audio digital stream signal on the memory disk through the disk interface means, and The interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, sends the signal to the digital VTR through the disk interface means, the bus interface means, and the stream bus. While monitoring the audio digital stream signal in the signal, at the timing controlled by the interface control means, the AV / subcode digital A part of the audio digital stream signal in the stream signal is replaced with an audio digital stream signal converted based on the analog audio signal from the analog audio input means.
[0016]
The audio-video editing system according to claim 2, wherein the audio-video editing system digitally records and reproduces audio and video on and from a recording medium, and a memory having a memory disk that is a recording medium different from the recording medium. A disk device, wherein the digital VTR and the memory disk device are connected by one stream bus standardized as a bus for audio and video digital stream signals, and the digital VTR is connected to the digital VTR through the stream bus. An audio-video editing system for digitally editing audio and video input from a VTR to a memory disk device using the memory disk, wherein the digital VTR is used as a digital stream signal for the audio and video. , A DVC-compressed audio digital signal output from the digital VTR Corresponds to an AV / subcode digital stream signal composed of a stream signal, a video digital stream signal, and a subcode digital stream signal including a time code, and a control signal composed of a command for controlling the digital VTR and a status signal of the digital VTR. All data to be input / output to / from the stream bus in a predetermined manner, and a bus interface circuit for input / output of the data by the bus interface. Directly connected to the stream bus, all data corresponding to the AV / subcode digital stream signal and control signal can be input / output to / from the stream bus according to the predetermined method. Bus interface means, and disk interface means capable of recording and reproducing all data corresponding to the AV / subcode digital stream signal and the control signal from the bus interface means on the memory disk in frame units of video signals. An interface control means for operating and controlling the bus interface means and the disk interface means by the control signal; an analog audio input means for inputting only an analog audio signal which is audio information in the form of an analog signal; and the analog audio input means An A / D converter for converting an analog audio signal from the A / D converter into a digital audio signal; an encoder for DV-compressing the digital audio signal from the A / D converter to convert it into a PCM audio signal; Recording means for recording a PCM audio signal obtained from a coder on the memory disk through the disk interface means. The interface control means controls and operates the digital VTR and the memory disk device, and outputs data from the digital VTR. All or a part of the AV / subcode digital stream signal is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced and the AV / subcode digital stream is recorded. A signal is sent to the digital VTR through the disk interface means and the bus interface means and the stream bus, and a decoder provided in the digital VTR is provided. The VTR codec decodes the AV / subcode digital stream signal and converts it into an analog video signal, adds the analog video signal to a monitor TV, and starts editing while monitoring a reproduced image by the monitor TV. A program of a cut-in point, which is a point, and a cut-out point, which is an end point of editing, is determined, and the interface control means performs editing while reproducing the AV / subcode digital stream signal from the memory disk according to the program. After editing the AV / subcode digital stream signal, when re-editing only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk, Note The AV / subcode digital stream signal recorded on the disc is reproduced and sent to the digital VTR through the disc interface means, the bus interface means and the stream bus, and the audio digital stream signal in the AV / subcode digital stream signal is transmitted. While monitoring, at the timing controlled by the interface control means, a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is converted into an analog audio signal from the analog audio input means. Is replaced with an audio digital stream signal converted based on
[0017]
In the audio and video editing system according to the third aspect, when editing the audio and video input to the memory disk device according to the first or second aspect, the memory disk device is controlled by interface control means. Time code detecting means for detecting and extracting a time code corresponding to a cut-in point and a cut-out point of editing from a subcode digital stream signal; and time code memory means for storing a time code from the time code detecting means. A display for displaying the contents of the time code memory means, and controlling the display so that the time code corresponds to the number of programs consisting of the cut-in point and the cut-out point. Display control means for displaying a reproduced image of a monitor TV and a program for editing the same. Corresponding a configuration for editing while monitoring the edit list displayed on the display device on.
[0018]
In the audio and video editing system according to a fourth aspect, when editing the audio and video input to the memory disk device according to the third aspect, the memory disk device inputs an analog video signal from a digital VTR. Input means and character image generation for generating a character image signal by converting the cut-in point and cut-out point of editing based on the time code in the time code memory means and the character information of each program number into a video signal for character display. Means, superimposing means for generating an analog video signal by superimposing the character video signal from the character video generating means on the analog video signal from the input means, and an analog video signal from the superimposing means. Output means for outputting the analog video signal from the output means to a monitor TV. A configuration to perform editing while monitoring the edit list corresponding to the reproduced image and the editing program.
[0019]
In the audio-video editing system according to the fifth aspect, when editing the audio and video input to the memory disk device according to the fourth aspect, the memory disk device may be configured such that the interface control means controls an AV in the memory disk. A sub-code digital stream signal, configured to reproduce DC component small screen information composed of a plurality of rough sampling images in correspondence with an edit cut-in point and cut-out point and each program number; To a small-screen video signal corresponding to the information, and a small-screen video signal controlled by the display control means, and an analog signal from the digital VTR input through the input means. Outputs the video signal of the picture-in-picture screen created by mixing the video signal A mixing means for outputting to a stage, and a small-screen creation for temporarily storing various data such as a still image based on a small-screen video signal necessary for the creation work when the picture-in-picture screen is created by the mixing means. A video signal of a picture-in-picture screen from the mixing means, to the monitor TV through the output means, and monitor the reproduced image and the editing small screen corresponding to the editing program. It is configured to perform editing.
[0020]
According to a sixth aspect of the present invention, in the audio and video editing system, when the audio and video input to the memory disk device according to the fourth aspect are edited, the memory disk device is controlled by display control means to perform editing. A small-screen creating means for thinning out an analog video signal from a digital VTR input through an input means to create a still-image small-screen signal in correspondence with a cut-in point and a cut-out point and each program number; A small-screen creation memory means for temporarily storing a still-image small-screen signal from the digital video recorder, and a still-picture small-screen signal from the small-screen creation means and an analog video from the digital VTR controlled by the display control means. And a mixing means for outputting a picture signal of a picture-in-picture screen created by mixing the signal and the output signal to an output means. The picture-in-picture screen video signal from the mixing means, in addition to the monitor TV via the output means, configured to perform editing while monitoring the small screen for editing corresponding to the reproduced image and the editing program.
[0021]
According to a seventh aspect of the present invention, in the audio / video editing system, when editing the audio and video input to the memory disk device according to any one of the first to sixth aspects, the memory disk device includes an interface control unit. A light receiving means for receiving light emission for an operation command from an external remote controller as a signal for operation and control by the light receiving means, and controlling the interface control means based on a light receiving signal corresponding to the operation command by the light receiving means. Then, the remote control is performed by the remote controller through the display controller, so that the interface controller executes the operation and control based on an operation command from the remote controller.
[0022]
According to an eighth aspect of the present invention, in the audio / video editing system, when editing the audio and video input to the memory disk device according to any one of the first to seventh aspects, the memory disk device includes a bus interface unit. Is connected to one end of another stream bus provided in addition to the stream bus to the digital VTR, and the stream bus also supports AV / subcode digital stream signals and control signals. Data to be input / output in a predetermined manner, is connected to the other end of the another stream bus, and the AV / subcode digital stream signal and control signal are transmitted to the other stream bus. It has an interface capable of inputting and outputting data corresponding to a signal in accordance with the predetermined method. By chromatography coarsely braided computer, a configuration to perform editing is controlled operations.
According to the above configuration, when audio and video from a digital VTR are edited using the memory disk, the memory disk is standardized for audio and video in the memory disk device having the memory disk. By directly interfacing with the stream bus, a recording area for audio and video digital stream signals on the memory disk is set so that the recording positions of these digital stream signals are continuous, and only the digital stream signal is stored in that area. By recording, the continuity of data at the time of recording and reproduction with respect to the digital stream signal is maintained, it is possible to edit the stream signal as a digital signal in a digital signal state, and the AV / subcode digital stream signal After editing, in the memory disk unit, The interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, sends it to the digital VTR through the disk interface means, the bus interface means and the stream bus, and While monitoring the audio digital stream signal, a part of the audio digital stream signal recorded on the memory disk is converted into an A / D signal based on the analog audio signal from the analog audio input means at the timing controlled by the interface control means. It is possible to replace the audio digital stream signal converted by the converter, the encoder and the recording means.
[0023]
According to a ninth aspect of the present invention, the audio-video editing system has a configuration in which an IEEE 1394 bus determined by the IEEE is used as the stream bus according to any one of the first to eighth aspects.
[0024]
According to the above configuration, when audio and video from the digital VTR are edited using the memory disk, the audio and video for the audio and video standardized by IEEE 1394 with respect to the memory disk in the memory disk device having the memory disk. By directly interfacing with the digital stream bus, a recording area for audio and video digital stream signals on a memory disk is set so that the recording positions of those digital stream signals are continuous, and only the digital stream signal is stored in that area. To maintain the continuity of data at the time of recording and reproduction with respect to the digital stream signal, to enable editing in a digital signal state as a stream signal, and to execute the AV / subcode digital stream signal After editing the In the re-disc apparatus, the interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, sends the reproduced signal to the digital VTR through the disk interface means and the bus interface means, and the IEEE 1394 bus. While monitoring the audio digital stream signal in the signal, at a timing controlled by the interface control means, a part of the audio digital stream signal recorded on the memory disk is converted based on the analog audio signal from the analog audio input means. It is possible to replace the audio digital stream signal converted by the A / D converter and the encoder and the recording means.
[0025]
Hereinafter, an audio-video editing system according to an embodiment of the present invention will be specifically described with reference to the drawings.
(Embodiment 1)
The audio-video editing system according to the first embodiment of the present invention will be described. Components having the same functions as those of the conventional audio / video editing system shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0026]
FIG. 1 is a block diagram showing the configuration of the audio-video editing system according to the first embodiment. The audio-video editing system has a basic configuration in which a digital VTR 500 that digitally records and reproduces audio and video as a recording medium on a digital video cassette (DVC) in the form of a magnetic tape, and a recording medium of the digital VTR 500 And a hard disk drive H1 as a memory disk drive having a hard disk (HDD) 100, which is one of the disk-shaped memory disks, which is another medium form. The digital VTR 500 and the hard disk drive H1 are used for audio and video. Audio stream input to the hard disk drive H1 from the digital VTR 500 via the IEEE1394 bus B1 as a stream bus for digital stream signals for The called image, is configured to edit digitally with hard disk 100.
[0027]
In FIG. 1, a digital VTR 500 includes a DVC-compressed audio digital stream signal, a video digital stream signal, and a subcode digital stream signal including a time code output from the digital VTR 500 as audio and video digital stream signals. A bus interface capable of inputting / outputting an AV / subcode digital stream signal and all data corresponding to a control signal consisting of a command for controlling the digital VTR 500 and a status signal of the digital VTR 500 to and from the IEEE 1394 bus B1 in a predetermined manner ( DV terminal), and a bus interface circuit (not shown) for inputting and outputting the data by the bus interface.
[0028]
On the other hand, the hard disk drive H1 is directly connected to the above-mentioned IEEE 1394 bus B1, and all data corresponding to the above-mentioned AV / subcode digital stream signal and control signal are transmitted to the above-mentioned IEEE 1394 bus B1 in the same manner as described above. A bus interface comprising a link (LINK) 101 as a data link layer of an upper protocol and a PHY (PHY) 102 as a physical layer of a lower protocol for audio and video digital stream signals. Means 103 and all the data corresponding to the AV / subcode digital stream signal and the control signal from the bus interface means 103 to a video signal which mediates between the hard disk 100 and the following disk interface. A memory controller (MC) 105 for enabling recording and reproduction on the hard disk 100 in frame units, a memory controller 105 for recording and reproduction on the hard disk 100, and an interface (IDE) 104 for signal reception and transmission of the hard disk 100; A bus interface means 103 and an interface control means 108 comprising a microcomputer (μCOM) for controlling (controlling) the bus interface means 103 and the disk interface means 107 by the control signal, and audio information in the form of analog signals. Analog audio input means 121 for inputting only an analog audio signal which is an analog audio signal, and converting an analog audio signal from the analog audio input means 121 into a digital audio signal. A / D converter (A / D) 122, an encoder (ENC) 123 for DV-compressing the digital audio signal from the A / D converter 122 to convert the digital audio signal into a PCM audio signal, and a PCM audio obtained from the encoder 123. Recording means 124 for recording signals on the hard disk 100 through the disk interface means 107;
[0029]
Further, the hard disk device H1 detects a time code corresponding to the cut-in point and the cut-out point of editing from the sub-code digital stream signal in the microcomputer (μCOM) 109 controlled by the interface control means 108 and extracts the time code. A display (LCD) 112 for displaying the contents of the time code memory means 111, and a time code memory means 111 for storing the time code from the time code detection means 110; The microcomputer 109 is provided as display control means 109 for controlling the display 112 and displaying the time code on the display 112 corresponding to the number of programs including the cut-in point and the cut-out point. ing.
[0030]
The hard disk drive H1 is a light receiving means for receiving a light emission (for example, infrared light) L1 for an operation command from a remote controller R1 which is externally operated by a key or the like as a signal for operation and control by the interface control means 108. It has an IR receiver 113.
[0031]
The operation of the audio / video editing system configured as described above will be described below.
First, the digital VTR 500 and the hard disk drive H1 are controlled by the interface control means 108, and all or a part of the AV / subcode digital stream signal from the digital VTR 500 is transferred to the IEEE 1394 bus B1, the bus interface means 103, and the disk interface means 107. Through the hard disk 100.
[0032]
Thereafter, the hard disk 100 is reproduced by the interface control means 108 through the disk interface means 107, and the AV / subcode digital stream signal is sent to the digital VTR 500 through the disk interface means 107, the bus interface means 103 and the IEEE1394 bus B1, and the digital VTR 500 The AV / subcode digital stream signal is decoded and converted to an analog video signal by a VTR codec (not shown) having a decoder provided therein, and an analog video signal A10 from the digital VTR 500 is connected to a connection cable K1. Through to the monitor TV 504.
[0033]
Next, while monitoring the reproduced image, a program for a cut-in point which is a start point of editing and a cut-out point which is an end point of editing is determined, and the interface control means 108 sends the AV data from the hard disk 100 as described above. While editing the / subcode digital stream signal, the editing list L10 corresponding to the editing program is displayed on the display 112, and the reproduced image of the monitor TV 504 and the editing list L10 of the display 112 are displayed. Edit while monitoring.
[0034]
On the other hand, apart from the above-mentioned editing, when editing only the audio digital stream signal in the AV / subcode digital stream signal recorded on the hard disk 100 after editing the AV / subcode digital stream signal, In the hard disk drive H1, the analog audio signal input from the analog audio input means 121 is converted into a PCM audio signal by the A / D converter 122, the encoder 123, and the recording means 124, and is converted as a digital audio stream signal into the disk interface means 107. The AV / subcode digital stream signal recorded on the hard disk 100 is reproduced by the interface control means 108 and the disk interface means 107 and the bus interface. The data is sent to the digital VTR 500 via the interface means 103 and the IEEE 1394 bus B1, and is recorded on the hard disk 100 at a predetermined timing controlled by the interface control means 108 while monitoring the audio digital stream signal in the AV / subcode digital stream signal. It is possible to replace a part of the audio digital stream signal in the AV / subcode digital stream signal with an audio digital stream signal converted based on the analog audio signal from the analog audio input unit 121.
[0035]
In the above description, after the audio digital stream signal based on the analog audio signal from the analog audio input means 121 is recorded on the hard disk 100 in advance, the audio digital stream signal is recorded on the hard disk 100 from the digital VTR. Although it was configured to replace only part of the audio digital stream signal in the code digital stream signal, analog The audio digital stream signal based on the analog audio signal from the audio input means 121 is not recorded in the hard disk 100 in advance, and the audio digital stream signal in the AV / subcode digital stream signal of the digital VTR 500 is monitored and the hard disk 100 is monitored in real time. May be configured to directly replace only a part of the audio digital stream signal in the AV / subcode digital stream signal recorded in the.
[0036]
Also, the interface control means 108 is remotely controlled by an external remote control R1 through the display control means 109 based on a light reception signal corresponding to an operation command from the IR light receiver 113, so that the interface control means 108 The aforementioned operation and control are executed based on the operation command.
[0037]
The hard disk drive H1 is connected to the bus interface means 103 at one end of an IEEE 1394 bus B3 provided between the digital VTR 500 and the personal computer P11 in addition to the IEEE 1394 bus B1. The data corresponding to the AV / subcode digital stream signal and the control signal can be input / output to / from the bus B3 in the same manner as described above.
[0038]
Also, the personal computer P11 connected to the other end of the IEEE 1394 bus B3 transmits the data corresponding to the AV / subcode digital stream signal and the control signal to the IEEE 1394 bus B3 according to the above-described method. An interface (not shown) capable of inputting / outputting data by means of.
[0039]
The hard disk device H1 can be controlled and operated for editing by the personal computer P11.
(Embodiment 2)
An audio-video editing system according to a second embodiment of the present invention will be described. The configuration and operation for re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the hard disk 100 after the editing of the AV / sub-code digital stream signal are described in the embodiment. Since it is the same as the first embodiment, the description is omitted here. Here, detailed description of the same components as those in the above-described embodiment will be omitted.
[0040]
FIG. 2 is a block diagram showing a configuration of the audio-video editing system according to the second embodiment. In FIG. 2, a hard disk drive H1 includes an input unit (AV input terminal) 200 for inputting an analog video signal A10 from a digital VTR 500, and a cut-in point and a cut-out point for editing based on a time code in a time code memory unit 111. A character image generator 201 for converting character information of each program number into a character display image signal to generate a character image signal M20; and an analog image signal A10 from the input unit 200 and a character from the character image generator 201. It has superimposing means (OSD) 202 for generating an analog video signal obtained by superimposing the video signal M20, and output means (AV output terminal) 203 for outputting the analog video signal from the superimposing means 202. I have.
[0041]
The operation of the audio / video editing system configured as described above will be described below.
In this audio / video editing system, the hard disk drive H1 controls the digital VTR 500 through the IEEE1394 bus B1 by the interface control means 108, and inputs the analog video signal A10 from the digital VTR 500 decoded by the VTR codec through the connection cable K1. On the other hand, based on the time code in the time code memory means 111 provided in the microcomputer which is the display control means 109, the cut-in of the edit corresponding to the time code is input by the character image generating means 201. The character information of the point, the cutout point, and each program number is converted into a character display video signal to generate a character video signal M20.
[0042]
Next, the superimposing means (OSD) 202 generates an analog video signal obtained by superimposing the character video signal M20 from the character video generating means 201 on the analog video signal A10 input from the input means 200, The analog video signal is output from the output means 203 and added to the monitor TV 504 through the connection cable K2, and the reproduced image of the monitor TV 504 and each of the editing programs superimposed on the image in the form of character information are superimposed. Editing is performed while monitoring the corresponding edit list L11.
(Embodiment 3)
An audio-video editing system according to a third embodiment of the present invention will be described. The configuration and operation for re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the hard disk 100 after editing the AV / sub-code digital stream signal are described above. Since it is the same as each embodiment, the description here is omitted. Further, here, detailed description of the same components as those in the above-described embodiments will be omitted.
[0043]
FIG. 3 is a block diagram showing a configuration of the audio-video editing system according to the third embodiment. In FIG. 3, the hard disk device H1 includes a plurality of interface control means 108, based on an AV / subcode digital stream signal reproduced from the hard disk 100, corresponding to a plurality of edit cut-in points and cut-out points and respective program numbers. A small-screen decoding means configured to generate small-screen information S30 of a DC component composed of a rough sampling image and to decode the small-screen information S30 from the interface control means 108 into a small-screen video signal S31 corresponding to the information; (DC Codec) 300, a small screen video signal S31 from the small screen decoding means 300 controlled by the microcomputer which is the display control means 109, and an analog video signal A10 from the digital VTR 500 input through the input means 200. To Mick A mixing means (Mix) 301 for outputting a video signal of a picture-in-picture (PinP) screen created by the above to the output means 203, and a work required for creating the picture-in-picture screen by the mixing means 301. A small screen creation memory means (Mem) 302 for temporarily storing various data such as a still image based on the small screen video signal S31 is provided.
[0044]
The operation of the audio / video editing system configured as described above will be described below.
In this audio / video editing system, the hard disk drive H1 is controlled by the interface control means 108 and edited by the interface control means 108 from the AV / subcode digital stream signal reproduced from the hard disk 100 by the disk interface means 107. The small-screen information S30 of the DC component composed of a plurality of rough sampling images is generated in correspondence with the cut-in point and the cut-out point and the respective program numbers.
[0045]
Next, the small screen decoding means 300 decodes the small screen information S30 from the interface control means 108 into a small screen video signal S31 corresponding to the information, while controlling the digital VTR 500 via the IEEE 1394 bus B1 by the interface control means 108. Then, the analog video signal A10 from the digital VTR 500 decoded by the VTR codec is input from the input means 220 through the connection cable K1, and the mixing means 301 outputs the small-screen video signal S31 from the small-screen decoding means 300, An analog video signal A10 from the digital VTR 500 input through the input means 200 is mixed to create a video signal of a composite image which is a picture-in-picture screen. When the video signal is created, various data such as a still image based on the small-screen video signal S31 necessary for the creation operation is temporarily stored in the small-screen creation memory unit 302.
[0046]
Then, the video signal of the picture-in-picture screen from the mixing means 301 is added from the output means 203 to the monitor TV 504 via the connection cable K2, and the reproduced image of the monitor TV 504 and the editing program mixed and synthesized on the image are supported. Editing is performed while monitoring the editing small screen G30 to be edited.
[0047]
In the third embodiment, the editing is performed while monitoring the reproduction image of the monitor TV 504 and the editing small screen G30 mixed and synthesized on the image, but as described in the second embodiment. It is also possible to configure such that editing is performed by appropriately switching between a reproduction image of the monitor TV 504 and an editing method performed while monitoring the superimposed editing list L11 in the form of character information on the image.
(Embodiment 4)
An audio-video editing system according to a fourth embodiment of the present invention will be described. The configuration and operation for re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the hard disk 100 after editing the AV / sub-code digital stream signal are described above. Since it is the same as each embodiment, the description here is omitted. Further, here, detailed description of the same components as those in the above-described embodiments will be omitted.
[0048]
FIG. 4 is a block diagram showing a configuration of the audio-video editing system according to the fourth embodiment. In FIG. 4, the hard disk drive H1 is controlled by a microcomputer which is a display control means 109, and is inputted through an input means (AV input terminal) 200 in correspondence with a cut-in point and a cut-out point of editing and each program number. Screen creating means 400 for creating a still image small screen signal by thinning out the analog video signal A10 from the digital VTR 500, and a small screen creating memory means for temporarily storing the still image small screen signal from the small screen creating means 400 (Mem) 401 and a picture-in which is controlled by a microcomputer which is the display control means 109 to mix the still image small screen signal from the small screen creation means 400 and the analog video signal A10 from the digital VTR 500 to create a picture-in. A video signal of a picture (PinP) screen is output to an output unit (AV output terminal). ) And a mix section (Mix) 402 to be output to 203.
[0049]
The operation of the audio / video editing system configured as described above will be described below.
In this audio-video editing system, the hard disk drive H1 first controls the digital VTR 500 via the IEEE1394 bus B1 by the interface control means 108, and converts the analog video signal A10 from the digital VTR 500 decoded by the VTR codec into the connection cable K1. The small screen creating means 400 is controlled by a microcomputer serving as the interface control means 108 and the display control means 109 so that the small screen creating means 400 The analog video signal A10 from the digital VTR 500 input through the input unit 200 is thinned out to create a still image small screen signal in accordance with the point, the cutout point, and each program number.
[0050]
Next, under the control of the microcomputer as the display control means 109, the mixing means 402 mixes the still picture small screen signal from the small screen creation means 400 with the analog video signal A10 from the digital VTR 500 to create the same. The video signal of the picture-in-picture screen (synthesized image) is added from the output means 203 to the monitor TV 504 via the connection cable K2, and the playback image of the monitor TV 504 and the editing image corresponding to the editing program mixed and synthesized on the image are mixed. Editing is performed while monitoring the small screen G30.
[0051]
In the fourth embodiment, as in the third embodiment, editing is performed while monitoring the reproduction image of the monitor TV 504 and the editing small screen G30 mixed and synthesized on the image. As described in the second embodiment, the editing is performed by appropriately switching between the reproduction image of the monitor TV 504 and the editing method performed while monitoring the superimposed editing list L11 in the form of character information on the image. Can also be configured.
[0052]
As described above, according to the configuration of each embodiment, when the audio and video from the digital VTR 500 are edited using the hard disk 100, the hard disk device H1 having the hard disk 100 is connected to the IEEE 1394 bus in the hard disk device H1. By directly interfacing with the digital stream bus for audio and video standardized by B1, as a recording area for audio and video digital stream signals on the hard disk 100, the recording positions of these digital stream signals are continuous. By setting and recording only the digital stream signal in the area, the continuity of data at the time of recording and reproduction with respect to the digital stream signal is maintained, and the stream signal can be edited in the digital signal state as it is.
[0053]
As a result, the editing of the audio and video from the digital VTR 500 can be performed at lower cost and more efficiently than in the past, and the editing can be speeded up.
[0054]
After the above-mentioned editing of the AV / subcode digital stream signal, in the hard disk drive H1, the interface control means reproduces the AV / subcode digital stream signal recorded on the hard disk 100, and the disk interface means 107 and the bus. The audio recorded on the hard disk 100 is sent to the digital VTR 500 via the interface means 103 and the IEEE 1394 bus B1 and at the timing controlled by the interface control means 108 while monitoring the audio digital stream signal in the AV / subcode digital stream signal. A part of the digital stream signal is converted into an A / D converter 122 and an encoder 1 based on an analog audio signal from the analog audio input means 121. 3 and can be replaced by a converted voice digital stream signal by the recording means 124.
[0055]
Therefore, after the above-described editing of the AV / subcode digital stream signal, re-editing using only an after-recording function or the like for only the audio digital stream signal in the AV / subcode digital stream signal recorded on the hard disk 100 is performed. can do.
[0056]
In each of the above-described embodiments, the case where the hard disk (HDD) is used as the memory disk has been described as an example. However, a CD-RAM or DVD-RAM that can be rewritten any number of times is used. The same operation and effect can be obtained.
[0057]
Further, in each of the above-described embodiments, the case where the IEEE 1394 bus is used as the stream bus has been described as an example. However, similarly, a bus standardized for audio and video digital stream signals may be used. For example, it can be configured using other standard buses, and the same operation and effect can be obtained.
[0058]
【The invention's effect】
As described above, according to the present invention, when audio and video from a digital VTR are edited using a memory disk, the audio and video such as an IEEE 1394 bus are connected to the memory disk in a memory disk device having the memory disk. By directly interfacing with a stream bus standardized for video, as a recording area for audio and video digital stream signals on a memory disk, the recording positions of those digital stream signals are set so as to be continuous. By recording only the digital stream signal in the area, the continuity of data at the time of recording and reproduction with respect to the digital stream signal is maintained, and the stream signal can be edited in the digital signal state as it is.
[0059]
Therefore, the editing of the audio and video from the digital VTR can be performed at lower cost and more efficiently than in the past, and the editing can be speeded up.
[0060]
Further, after the editing of the AV / subcode digital stream signal, in the memory disk device, the interface control means reproduces the AV / subcode digital stream signal recorded on the memory disk, and the disk interface means and the bus interface means And a digital VTR via the IEEE 1394 bus. While monitoring the audio digital stream signal in the AV / subcode digital stream signal, one of the audio digital stream signals recorded on the memory disk at the timing controlled by the interface control means. Unit is replaced with an audio digital stream signal converted by the A / D converter and encoder and the recording means based on the analog audio signal from the analog audio input means. Rukoto can.
[0061]
Therefore, after the above-mentioned editing of the AV / subcode digital stream signal, re-editing using only the after-recording function or the like for only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk is performed. can do.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of an audio-video editing system according to a first embodiment of the present invention;
FIG. 2 is a block diagram illustrating a configuration of an audio-video editing system according to a second embodiment of the present invention;
FIG. 3 is a block diagram illustrating a configuration of an audio-video editing system according to a third embodiment of the present invention;
FIG. 4 is a block diagram illustrating a configuration of an audio-video editing system according to a fourth embodiment of the present invention;
FIG. 5 is a block diagram showing a configuration of a conventional audio-video editing system.
[Explanation of symbols]
100 hard disk
103 Bus interface means
107 Disk interface means
108 Interface control means
109 display control means
110 Time code detection means
111 time code memory means
112 display
113 Light receiving means
121 Analog voice input means
122 A / D converter
123 encoder
124 recording means
200 input means
201 Character image generation means
202 Superimpose means
203 Output means
300 Small screen decoding means
301, 402 mixing means
302, 401 Small screen creation memory means
400 Small screen creation means
500 digital VTR
504 TV for monitor
B1, B3 IEEE 1394 bus
H1 hard disk drive

Claims (9)

A digital VTR that digitally records and reproduces audio and video on and from a recording medium; and a memory disk device that has a memory disk that is a recording medium different from the recording medium. The digital VTR and the memory disk device Are connected by a single stream bus standardized as a bus for audio and video digital stream signals, and the audio and video input from the digital VTR to the memory disk device through the stream bus, An audio-video editing system for digitally editing using a memory disk, wherein the digital VTR is a DVC-compressed audio digital stream output from the digital VTR as the audio and video digital stream signals. Signal and video digital stream signal and All data corresponding to an AV / subcode digital stream signal including a subcode digital stream signal including a system code and a control signal including a command for controlling the digital VTR and a status signal of the digital VTR are defined. A bus interface capable of inputting and outputting to the stream bus by a system, and a bus interface circuit for inputting and outputting the data by the bus interface, wherein the memory disk device is directly connected to the stream bus, Bus interface means for inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method; Disk interface means for recording and reproducing all data corresponding to the AV / sub-code digital stream signal and the control signal from the memory disk in units of video signal frames, and the bus interface means and the disk interface An interface control means for operating and controlling the means by the control signal; an analog sound input means for inputting only an analog sound signal which is sound information in an analog signal form; and a digital sound signal from the analog sound input means. An A / D converter for converting the digital audio signal from the A / D converter into a DV signal, and an encoder for converting the digital audio signal from the A / D converter into a PCM audio signal; and a PCM audio signal obtained from the encoder. Recording means for recording the data on the memory disk through interface means, and controlling the digital VTR and the memory disk device by the interface control means to control all of the AV / subcode digital stream signals from the digital VTR. Alternatively, a part is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is transmitted to the disk interface means and the bus. The AV / sub code is sent to the digital VTR through an interface means and a stream bus, and is provided in the digital VTR by a VTR codec having a decoder. The digital stream signal is decoded and converted into an analog video signal, and the analog video signal is added to a monitor TV. A program at a cutout point which is an end point is determined, the interface control means edits the AV / subcode digital stream signal while reproducing the AV / subcode digital stream signal from the memory disk in accordance with the program, and edits the AV / subcode digital stream signal. After the editing, when re-editing only the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk, the memory disk device uses an analog audio input signal from the analog audio input means. The audio signal is The audio signal is converted into the PCM audio signal by a D converter, an encoder, and a recording unit, and recorded as an audio digital stream signal on the memory disk through the disk interface unit, and the AV recorded on the memory disk by the interface control unit. Reproducing the digital / subcode digital stream signal and sending it to the digital VTR through the disk interface means and the bus interface means and the stream bus, and monitoring the audio / digital stream signal in the AV / subcode digital stream signal, According to the timing controlled by the control means, one of the audio digital stream signals in the AV / subcode digital stream signal recorded on the memory disk is controlled. An audio / video editing system, wherein the unit is replaced with an audio / digital stream signal converted based on an analog audio signal from the analog audio input unit. A digital VTR that digitally records and reproduces audio and video on and from a recording medium; and a memory disk device that has a memory disk that is a recording medium different from the recording medium. The digital VTR and the memory disk device Are connected by a single stream bus standardized as a bus for audio and video digital stream signals, and the audio and video input from the digital VTR to the memory disk device through the stream bus, An audio-video editing system for digitally editing using a memory disk, wherein the digital VTR is a DVC-compressed audio digital stream output from the digital VTR as the audio and video digital stream signals. Signal and video digital stream signal and All data corresponding to an AV / subcode digital stream signal including a subcode digital stream signal including a system code and a control signal including a command for controlling the digital VTR and a status signal of the digital VTR are defined. A bus interface capable of inputting and outputting to the stream bus by a system, and a bus interface circuit for inputting and outputting the data by the bus interface, wherein the memory disk device is directly connected to the stream bus, Bus interface means for inputting and outputting all data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus according to the predetermined method; Disk interface means for recording and reproducing all data corresponding to the AV / sub-code digital stream signal and the control signal from the memory disk in units of video signal frames, and the bus interface means and the disk interface An interface control means for operating and controlling the means by the control signal; an analog sound input means for inputting only an analog sound signal which is sound information in an analog signal form; and a digital sound signal from the analog sound input means. An A / D converter for converting the digital audio signal from the A / D converter into a DV signal, and an encoder for converting the digital audio signal from the A / D converter into a PCM audio signal; and a PCM audio signal obtained from the encoder. Recording means for recording the data on the memory disk through interface means, and controlling the digital VTR and the memory disk device by the interface control means to control all of the AV / subcode digital stream signals from the digital VTR. Alternatively, a part is recorded on the memory disk through the stream bus and the bus interface means and the disk interface means, and thereafter, the memory disk is reproduced, and the AV / subcode digital stream signal is transmitted to the disk interface means and the bus. The AV / sub code is sent to the digital VTR through an interface means and a stream bus, and is provided in the digital VTR by a VTR codec having a decoder. The digital stream signal is decoded and converted into an analog video signal. The analog video signal is added to a monitor TV, and while monitoring a reproduced image on the monitor TV, a cut-in point, which is an edit start point, and an edit start point are set. A program at a cutout point which is an end point is determined, and the interface control means edits the AV / subcode digital stream signal while reproducing the AV / subcode digital stream signal from the memory disk in accordance with the program. After editing, when re-editing only the audio digital stream signal in the AV / sub-code digital stream signal recorded on the memory disk, the interface control means controls the AV / sub code recorded on the memory disk. Code Digitals A stream signal is reproduced and sent to the digital VTR through the disk interface means, the bus interface means and the stream bus, and controlled by the interface control means while monitoring the audio digital stream signal in the AV / subcode digital stream signal. The audio digital stream signal obtained by converting a part of the audio digital stream signal in the AV / subcode digital stream signal recorded on the memory disk on the basis of the analog audio signal from the analog audio input means at the set timing. An audio / video editing system characterized by replacing with: At the time of editing audio and video input to the memory disk device, the memory disk device is controlled by the interface control means to convert the time code corresponding to the edit cut-in point and cut-out point into a subcode digital stream signal. A time code detecting means for detecting and extracting the time code from the time code memory means, a time code memory means for storing the time code from the time code detecting means, and a display for displaying the contents of the time code memory means. Display control means for controlling the display so as to display the time code corresponding to the number of programs comprising the cut-in point and the cut-out point. And edit while monitoring the edit list displayed on the display Audio video editing system according to claim 1 or claim 2, wherein the door. When editing audio and video input to the memory disk device, the memory disk device includes an input unit for inputting an analog video signal from a digital VTR, and a cut-in for editing based on time code in a time code memory unit. Character image generating means for converting the character information of points and cutout points and each program number into a video signal for character display to generate a character video signal, and from the character video generating means to an analog video signal from the input means. Superimposing means for generating an analog video signal by superimposing the character video signal of the character, and output means for outputting an analog video signal from the superimposing means, and outputting the analog video signal from the output means. In addition to the monitor TV, the playback list and the editing list corresponding to the editing program are monitored. Audio video editing system according to claim 3, wherein the editing while data. When editing audio and video input to the memory disk device, the memory disk device uses an interface control means to edit and edit cut-in and cut-out points from AV / subcode digital stream signals in the memory disk. Small-screen decoding means configured to reproduce DC component small-screen information composed of a plurality of rough sampling images in association with each program number, and to decode the small-screen information into a small-screen video signal corresponding to the information; A video signal of a picture-in-picture screen created by mixing the small-screen video signal from the small-screen decoding means and the analog video signal from the digital VTR input through the input means under the control of the display control means; Mixing means for outputting to the output means; Memory means for temporarily storing various data such as a still image based on a small-screen video signal necessary for the creation operation when creating the main picture screen, The video signal of the in-picture screen is added to the monitor TV through the output means, and editing is performed while monitoring the reproduced image and the editing small screen corresponding to the editing program. Audio-video editing system. At the time of editing audio and video input to the memory disk device, the memory disk device is controlled by the display control means so as to correspond to the cut-in point and cut-out point of editing and each program number, and to input means Screen creating means for creating a still image small screen signal by thinning out an analog video signal from a digital VTR input through a digital video recorder, and a small screen creating memory for temporarily storing the still image small screen signal from the small screen creating means Means for outputting a video signal of a picture-in-picture screen created by mixing the still picture small-screen signal from the small-screen creation means and the analog video signal from the digital VTR under the control of the display control means. Means for outputting the picture signal of the picture-in-picture screen from the mixing means. Audio video editing system of claim 4, in addition to the monitor TV, and performing editing while monitoring the small screen for editing corresponding to the reproduced image and editing program through the output unit. When editing audio and video input to the memory disk device, the memory disk device receives light for operation commands from an external remote controller as signals for operation and control by the interface control means. Means, and the interface control means is remotely controlled by the remote control through a display control means based on a light receiving signal corresponding to the operation command by the light receiving means, whereby the interface control means The audio-video editing system according to claim 1, wherein the operation and the control are executed based on an operation command. When editing audio and video input to the memory disk device, the memory disk device sets the bus interface means to one end of another stream bus provided in addition to the stream bus to the digital VTR. And the data corresponding to the AV / sub-code digital stream signal and the control signal can be input / output in a predetermined manner also to the stream bus, and the other stream bus And a personal computer having an interface capable of inputting and outputting data corresponding to the AV / subcode digital stream signal and the control signal to the stream bus in accordance with the predetermined method. It is operated and edited. Audio video editing system according to any one of claims 7 to Motomeko 1. 9. The audio-video editing system according to claim 1, wherein an IEEE 1394 bus determined by IEEE is used as the stream bus.

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