JP2556871B2 - Recorded content editing system for magnetic media - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an editing system used for dubbing control of the contents recorded on a magnetic medium such as a VTR tape.

(Prior Art) Conventionally, when dubbing a recorded VTR tape using two VTRs, while watching the playback screen, the playback VTR and the recording VTR are in the playback state and the recording part, respectively, in the part necessary for editing. While the manual operation is performed so that the state becomes unnecessary, the playback VTR is fast-forwarded while the recording VTR is paused in unnecessary parts such as images of TV commercials.

In other words, in this editing system, in order to control dubbing as described above, it is necessary to monitor the playback screen and
The troublesome work of operating the VTR at the same time is required.

Therefore, a recording tape editing method that does not require such a troublesome work has been conventionally proposed (see, for example, JP-A-61-48187).

In this editing method, another editing track different from the information track is defined on the recording tape, and a control signal is recorded at a position corresponding to the front position of the required information portion of the information track of the control track in the tape reproducing direction. Then, the first process for generating the first tape and the control signal detected from the control track of the first tape cause only the necessary information portion of the information track of the first tape to be transferred to the second tape. And a second process of dubbing.

(Problems to be Solved by the Invention) However, in the above-described conventional editing method, it is necessary to create a new tape format for editing different from the audio track on the tape. The tape running speed during dubbing of the necessary information portion from the editing tape is a constant speed even when skipping the unnecessary information portion, so there is a problem that it takes time to edit.

The present invention was devised to solve the above problems,
It is an object of the present invention to provide a recorded content editing system for a magnetic medium that does not require a new tape format for editing and can complete the editing work in a short time.

(Means for Solving Problems) In order to solve the above problems, a recording content editing system for a magnetic medium according to the present invention provides a control signal such as a recording track for recording a video signal on the magnetic medium and an editing code. A reproducing apparatus for forming a control track for recording, reproducing the recorded content of the magnetic medium based on the editing code recorded on the control track, and a recording apparatus for editing and recording desired content from the recorded content. And a control device for controlling the operation of the recording device from the reproducing device, wherein the control contents are recorded on the control tracks immediately before and after the unnecessary portion of the recorded contents to be deleted at the time of editing. Recording means for recording the code, means for recognizing the position of the unnecessary portion by reproducing the editing code, and unnecessary position-recognized The recording means is provided with means for jumping over and controlling playback of a portion by fast-forward control, and means for controlling the recording device in a recording standby state during this jumping playback period, wherein the recording means writes the editing code at the time of writing the editing code. When the write command of is issued,
It rewinds the recording length of the editing code converted to the playback time for a time period in which the playback status stabilizes, and then replays it and writes the editing code after the playback status stabilizes. .

(Operation) First, an editing code is recorded on a control track formed in advance on a magnetic medium so that an unnecessary portion to be deleted can be searched for during editing. For example, this edit code is the control track (IN
Signal. ) And a control track at the end (this is called an OUT signal). That is, when the editing code write command is issued during the writing of the editing code, the recording length of the editing code is converted to the playback time, and the rewinding time is rewound for a time period that stabilizes the playback state, and then rewinds. The editing code is written after the reproduction state is stabilized after the reproduction state is established. As a result, the end of the editing code matches the start and end of the unnecessary portion, so that the necessary portion is not missing or the unnecessary portion is not inserted.

In this way, after the editing code is written just before and at the end of the unnecessary portion, the reproducing device is connected to the dubbing state where the operation of the recording device can be controlled.

When the reproducing device starts reproducing the recorded contents, the recording device is put into the recording state. When the reproducing device detects the IN signal, the recording device is put in the recording standby state and the reproducing device is set to the fast-forward mode. On the other hand, when the reproducing device detects the OUT signal, it returns the reproducing device to the reproducing state and the recording device to the recording state. After that, the above control is automatically performed every time the IN signal and the OUT signal are detected.

(Example) Hereinafter, the Example of this invention is described with reference to drawings.

FIGS. 1 and 2 show a recording content editing system for a magnetic medium according to the present invention in which two VTRs, a reproducing VTR 1 and a recording VTR 2 are used.
An example in the case of being configured by is shown.

FIG. 1 shows an example of connection between the reproducing VTR 1 and the recording VTR 2, and these VTRs 1 and 2 are connected by three kinds of signal lines, that is, a video signal line 3, an audio signal line 4 and an operation control line 5. The signal transmission direction in these signal lines is for reproduction
VTR1 to VTR2 for recording and VA built in VTR1 for playback
The SS (VHS Address Search System) control unit A is the control body.

FIG. 2 is a block diagram showing a case where the VASS control unit A in FIG. 1 is configured by functional blocks and the operation control line 5 is configured by a wireless path using an optical remote control signal.

In the playback VTR 1, 7 is a VTR cassette, 8 is a video head drum, 9 is a control head, and 10 is a video tape.

The video tape 10 on which the video signal is recorded is naturally formed with a recording track for recording the video signal and a control track for recording the control signal.

The control head 9 records and reproduces a VASS signal composed of a VASS code on the control track of the video tape 10. In this example, the editing code created using this VASS code is also recorded and reproduced on the control track. It is a thing. Reference numeral 11 is a VASS signal writing / reading control unit. The writing / reading control unit 11 operates in cooperation with the system control unit 12 of the playback VTR in response to operations such as a cueing operation switch and a dubbing operation switch (not shown). The remote control signal of the VTR2 for recording is transmitted via the remote control output section 13 to the optical remote control signal for controlling the operation of the VTR2 for recording.
Send to 14.

The editing code in this example is an editing end code (hereinafter referred to as END code) that is written immediately before the end of a portion that should be left during dubbing editing (hereinafter referred to as the production recording portion 15), and is deleted during dubbing editing. Unnecessary parts (hereinafter,
This is referred to as CM recording portion 16. ) And a cut end code (hereinafter, referred to as an OUT code) and a cut start code (hereinafter, referred to as an IN code), which are written immediately before and after the end), respectively. And VASS
In this example as well, each code is written three times in succession in accordance with the regulations of No. 1 and is called an IN signal 17a, an OUT signal 17b, and an END signal 17c.
For example, if the IN code is "9900", the IN signal 17a actually recorded on the control track will be "9900,9900,990".
It becomes 0 ”. The writing start positions of the IN, OUT, and END signals 17a to 17c are started from the time when the recording length required to write each signal is rewound by the time converted into the reproduction time. As a result, the ends of the respective signals 17a to 17c match the starting ends 16a of the actual recording portion 15 and the CM recording portion 16. Further, according to the recorded content editing system of the present invention, the control track defined by the VHS standard,
And because the control coding standard is used,
It does not require a new tape format.

Next, the procedure for writing the edit code will be described with reference to FIG.

FIG. 3 is a schematic diagram of a tape for explaining the writing operation of the editing code. When a command for writing the editing code is output by an operation switch (not shown) while the reproducing VTR 1 is in the reproducing state, the writing / reading control unit 11 is instructed to rewind. In this example, the recording length of the IN signal 17a is converted into a reproduction time of 2.7 seconds, and the tape length of 6 seconds is taken into consideration in consideration of the stable time (3 seconds) required for transition from the rewind mode to the reproduction mode. Command to return. afterwards,
When the playback state stabilizes, the VASS code corresponding to the edit code is written after a lapse of 3 seconds. As a result, the IN signal 17a is recorded so that the IN signal 17a is set to a position slightly ahead of the starting end 16a of the CM recording portion 16. That is, ideally, the end of the IN signal 17a is the start 1 of the CM recording portion 16.
It is good to fit 6a, but in order to reliably cut the CM recording part 16 considering the error etc. of the mechanical mechanism part,
In this example, the recording of the IN signal 17a is set to a position slightly before the starting end 16a of the CM recording portion 16. The procedure for writing the above-mentioned edit code is based on the IN signal 17a, OUT signal 17b, E
It is applied to each of the ND signals 17c, resulting in the tape state shown in FIG. In FIG. 4, continuous production recording portions 15 are shown by production (1), production (2), and production (3).

When the editing code is written as described above, automatic dubbing editing becomes possible. Then, when the automatic dubbing editing is instructed, the writing / reading control unit 11 first outputs a recording pause command from the remote control output unit 13 to the recording VTR 2. The system controller (not shown) of the recording VTR 2 receives this command and maintains the recording VTR 2 in the recording pause state. Next, the writing / reading control unit 11 outputs a reproduction command to the system control unit 12 to put the reproduction VTR 1 into a reproduction state. After that, the write / read controller 11
Instructs the remote control output unit 13 to output the pause cancel command of the recording VTR 2. For recording upon receiving this command
The system control unit of the VTR2 controls switching from the recording pause state to the recording state.

In this way, the VTR1 for playback becomes the playback state and the VT for recording
After R2 is in the recording state, the control head 9
At, the VASS signal is read. When the write / read controller 11 detects the IN signal 17a in the VASS signal,
First, set the VTR2 for recording to the recording pause state, and then the VTR1 for playback.
The fast-moving control is performed to shorten the interlacing operation time of the CM recording portion 16 which is an unnecessary portion.

On the other hand, when the OUT signal 17b is detected, the reproduction VTR 1 is set in the reproduction state, and the system control unit 12 receives the information indicating that the reproduction VTR 1 is being reproduced, and then the pause of the recording VTR 2 is instructed. After such IN signal 17a and OUT signal 17b detection operations are repeated, when the END signal 17c is finally detected, first the recording VTR2 is stopped, then the playback VTR1 is stopped, and both VTR1, Turn off the power of 2. As a result, the tape that has undergone the above-described editing procedure will have the continuous recording portion 15 as shown in FIG. In addition, the above-mentioned writing / writing during automatic dubbing editing
Unless the END signal 17c is detected, the read control unit 11 first searches for the IN signal 17a, and then searches for the OUT signal 17b when the CM recording portion 16 is being cut by the IN signal 17a. Alternatively, malfunction is prevented even when the OUT signals 17b are continuously written. Further, although this example is applied to a VTR, it can also be applied to a device or an audio device using another magnetic medium.

(Effect of the Invention) As described above, according to the recorded content editing system of the present invention, the control track and the control coding standard defined by the VHS standard can be used in creating the editing code. It is possible to perform automatic dubbing editing in which necessary recording portions are continuous by using a conventional tape format without requiring a special tape format. Further, since the unnecessary portion whose position is recognized is skipped by the fast-forward control and the reproduction is controlled, the dubbing editing can be performed in a short time. Further, when the editing code writing command is issued during the writing of the editing code, the recording length of the editing code is converted into the playback time, and the time is rewound for a time that stabilizes the playback state. Since the editing code is written after the playback state is stabilized after the playback state is set, the end of the editing code matches the beginning and end of the unnecessary portion, so that the necessary portion is missing, There is no need to insert unnecessary parts.

[Brief description of drawings]

FIG. 1 shows an embodiment of a recorded content editing system of a magnetic medium according to the present invention, and is a schematic diagram showing a connection state of a reproducing VTR and a recording VTR, and FIG. 2 is a functional block diagram of the reproducing VTR in FIG. 3 is a schematic diagram for explaining the procedure for writing the edit code, FIG. 4 is a schematic diagram for the tape after writing the edit code, and FIG. 5 is a schematic diagram for the tape after editing. 1 …… Playback VTR, 2 …… Recording VTR 11 …… VASS signal writing / reading control section 12 …… System control section, 15 …… Production recording section 16 …… CM recording section, 17a …… IN signal 17b ...... OUT signal, 17c …… END signal

Claims (1)

(57) [Claims] 1. A recording track for recording a video signal and a control track for recording a control signal such as an editing code are formed on a magnetic medium, and the recorded information on the magnetic medium is recorded based on the editing code recorded on the control track. A system comprising a reproducing device for reproducing contents and a recording device for editing and recording desired contents from the recorded contents, wherein the reproducing device can control the operation of the recording device. Recording means for recording the editing code on the control tracks immediately before and at the end of the unnecessary portion to be deleted during editing, and means for recognizing the position of the unnecessary portion by reproducing the editing code. And means for controlling playback control by jumping over the position-recognized unnecessary portion by fast-forward control, and recording means for recording during the jump playback period. The recording means is provided with a unit for controlling a recording standby state, and when the editing code writing command is issued at the time of writing the editing code, the recording unit reproduces the recording length of the editing code into a reproduction time. A recorded content editing system for a magnetic medium, characterized in that rewinding is performed only for a time in which the state is stabilized, and then the reproduction state is set and the editing code is written after the reproduction state is stabilized.