JPH0736265B2 - Recording medium playing device - Google Patents

Description

TECHNICAL FIELD The present invention provides a composite information signal including an information signal such as a video signal and a digital audio signal, and an identification signal such as a frame number and a time code indicating the position of this information signal on the time axis. The present invention relates to a playing device for a recorded recording medium.

BACKGROUND ART In a video disc player (hereinafter abbreviated as VDP) or a video tape recorder (hereinafter abbreviated as VTR), an operator may want to play only a desired portion. A method of performing a so-called search operation is performed by designating an identification signal (hereinafter referred to as a time axis corresponding index signal) indicating a position on the time axis of a composite video signal such as a frame number.

However, it is usually the scene of the video signal that the operator remembers, not the frame number. Therefore, it is not easy to perform the operation of reproducing the desired scene by utilizing the frame number.

The same can be said with respect to the above-mentioned points in a recording medium such as a so-called CD which records a composite information signal including a digital audio signal and a time code.

SUMMARY OF THE INVENTION [Object of the Invention] Accordingly, it is an object of the present invention to provide a composite signal recording medium playing device which facilitates a search playing operation.

[Structure of the Invention] A composite information recording medium playing device according to the present invention comprises a storage means for storing combination information indicating a correspondence relationship between a time axis corresponding index code and a content code in the composite information signal, and stores the combination information. The time axis corresponding index code corresponding to the designated content code is extracted based on the obtained combination information obtained from the storage means, and the composite information signal of the portion corresponding to the extracted time axis corresponding index code is reproduced. .

[Operation of the Invention] In the recording medium playing device having such a configuration, the time axis corresponding index code corresponding to the content code designated by the operator is searched and extracted, and the portion corresponding to the index code of the searched and extracted composite information signal is searched. Play it back.

EXAMPLES Examples of the present invention will be described below with reference to the accompanying drawings.

In the recording medium playing apparatus according to the present invention shown in FIG. 1, a video disk 1 as a recording medium is placed on a turntable 2 and is rotationally driven by a spindle motor 3 while being placed on a target track on the video disk. The information detection point of the pickup 4 is set and the recording information signal is read as a so-called RF signal from the target track. The servo circuit 5 performs relative positioning of the pickup 4 with respect to the disk 1 and so-called servo control such as the rotation speed of the spindle motor 3. The turntable 3, the pickup 4, and the servo circuit 5 constitute a playing means.

The read signal obtained from the playing means is demodulated by the demodulation circuit 6 into a composite video signal.
The frame number separation circuit 7 separates and extracts the frame number from the obtained composite video signal. On the other hand, the composite video signal is supplied to a reproduction processing circuit 8 that performs processing such as separating the horizontal and vertical sync signals and separating the luminance signal and chrominance signal of the information signal. The reproduction processing circuit 8 reproduces not only the video information but also the audio signal on the audio carrier, drives the CRT 9 by the video signal to form a monitor screen, and drives the speaker 10 by the audio signal to reproduce the audio signal.

On the other hand, the frame number signals separated and extracted by the frame number separating means 7 are supplied to a central control unit (hereinafter referred to as CPU) 12 of the microcomputer through an input / output interface 11. The CPU 12 functions as the microcomputer 16 in response to a command from the keyboard 15 while cooperating with the ROM 13 and the RAM 14. Also, if necessary,
A sufficient storage capacity is secured in cooperation with an external memory device 17 such as a floppy disk drive. Also, the CPU has
A search command is supplied to the servo circuit 5 to reproduce the contents of the frame to be played through the input / output interface circuit 11, and the servo circuit 5 performs a known jump operation to perform the search operation and specify the specified frame. The action of reading a group is performed.

As described above, the search operation when the frame number to be played is designated is a known technique performed in commercially available VDP and VTR, and the details of the search operation when the frame number is designated will not be described here.

As described above, in the recording medium playing device according to the present invention, the image desired by the operator can be played back without designating the frame number itself.
The operation performed by 2 will be described with reference to FIG.

The flowchart of FIG. 2 shows a combination information setting mode which is preliminarily performed to establish a performance mode based on a correspondence relationship between a content code and a time axis corresponding index code such as a frame number, which is a feature of the recording medium playing device according to the present invention. ing. That is, the microcomputer 16 previously stores content codes ID (1) to ID (n) (where n is a natural number) in the ROM 13 or RAM 14 as the memory or the external memory 17.
I remember. These content code ID (n) are given an appropriate meaning according to the user's preference. For example, if the information signals recorded on the disc to be played are related to the baseball game between teams A and B, ID
(1) is the attack scene of team A, ID (2) is the attack scene of team B, and ID (3) is the home run scene,
ID (4) can be used as an error scene.

Under this assumption, the user
When the combination information setting mode is commanded by the keyboard 15, the CPU 12 executes a subroutine according to the flowchart of FIG. That is, the CPU 12 is the keyboard 15
It is determined whether or not a play or scan operation is performed from (step S1), and a play or scan operation instructed by the operation is instructed to the performance means unless the play or scan operation is performed and the release is not performed (step S1). S2). In this case, an operation mode command for moving the reading position in the direction of advancing the time axis such as double speed play, multi-track jump, fast forward, etc. can be executed.

On the other hand, if it is invented in step S1 that the operation for designating the motion in the direction of advancing the time axis such as play or scan is not performed, the still motion is instructed to the playing means (step S3). Next, in step S4, when it is determined that the content code ID (i) (i is any one of 1 to n) start operation is performed via the keyboard 15, the frame number of the current frame being still reproduced. As an FN _ST and store it in RAM 14 (step S
Five). If it is invented that the ID (i) start operation is not performed in step S4, it is determined in step S6 whether the ID (i) end operation is performed. When it is determined in step S6 that the ID (i) end operation has been performed, the frame number of the current frame still reproduced at that point is fetched and stored in the RAM 14 as an FN _SP (step S7). Thus, the ID
Since the start frame number FN _ST and end frame number FN _SP corresponding to (i) have been obtained, these are combined information (ID
(I); FN _ST , FN _SP ) is stored in the RAM 14 or the external memory 17 (step S8).

FIG. 3 is a table showing an example of the combination information set in the combination information setting mode described above, where ID (1) is A
Team attack scene, ID (2) is team B attack scene, ID
(3) is a content code indicating a home run scene and ID (4) is an error scene, and is composed of an appropriate number of bits. In the table, ID (1) uses FN (1) as the start frame
FN (i) is the end frame, ID (2) is FN (j) as the start frame, and FN (N-2) is the end frame. Here, N represents the maximum number of frames of the information signal recorded on the recording medium, and i, j is the number 1 from 1 to N.

The start frame of ID (3) is FN (i), and the end frame is FN (N-1). The start frame and end frame of ID (4) are FN (2) and FN (i).

Here, it should be noted that, corresponding to one content code,
Multiple pairs of FN _ST and FN _SP can be specified.

FIG. 4 shows a subroutine for setting the content code performance mode in which the performance is performed by the content code preset and stored as described above. That is, with the keyboard 15,
When the content chord playing mode is designated, the CPU 12 enters this subroutine, and first, at step S10, it is determined whether or not the manipulation input of the designated content chord ID (i) is made, and the manipulation input of ID (i) is made. If there is not, this subroutine is finished as it is. If it is determined that there is an operation input of ID (i), the combination information (ID (i); FN _ST , FN _SP ) corresponding to the ID (i) is searched and extracted (step S11). Then, a play operation for starting reproduction from the obtained frame FN _ST and ending reproduction at the frame FN _SP is instructed to the playing means (step S12).

Although the time axis corresponding index code is the frame number of the video signal in the above-mentioned embodiment, it may be a time code in so-called CD format, that is, any signal indicating the time axis of the information signal may be used. .

Although the VDP is described as an example, it is obvious that the present invention can be applied to the VTR.

EFFECTS OF THE INVENTION As is clear from the above, in the recording medium playing device according to the present invention, the content code is set and the combination information indicating the correspondence relationship with the time axis corresponding index code is set and stored. When the performance is specified by, the content code is translated into the time axis corresponding index code based on the preset combination information, and the performance device knows the part to be played and sequentially plays the part to be played. Is there.

Therefore, the operator only needs to specify the content code, and the performance device determines the required performance portion to perform the performance operation. Therefore, the operator does not need to specify the frame number or the time code, which is convenient. Is.

[Brief description of drawings]

FIG. 1 is a block diagram showing a recording medium playing device according to the present invention, FIGS. 2 and 4 are flow charts showing operation modes of the recording medium playing device of FIG. 1, and FIG. 3 is an operation mode of FIG. The table which shows the example of the combination information set by.

Claims (3)

[Claims] 1. A recording medium playing device for playing a recording medium on which a composite information signal including an information signal and a time axis corresponding index code is played, wherein a content code group which should correspond to the content of the information signal is stored in advance. First storage means for storing, second storage means for storing combination information of each content code of the content code group and the time axis corresponding index code, and any content code in the content code group is designated. When the time axis corresponding index code corresponding to the designated content code is extracted, the searching means and the reproducing means for reproducing the information signal within the range defined by the extracted time axis corresponding index code. Recording medium playing device. 2. The recording medium playing device according to claim 1, wherein the information signal is a composite video signal, and the time axis corresponding index code is a frame number. 3. The recording medium playing apparatus according to claim 1, wherein the information signal is a digital audio signal and the time axis corresponding index code is a time code.