JP2625728B2 - Program playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program reproducing apparatus for controlling reproduction of a video recorded on a video recording medium such as a video tape.

[Conventional technology]

Video disc systems (published by Corona Co., Ltd.) are devices that add various identification (ID) signals to video signals, record them on a recording medium, and use this ID signal to reproduce images in any order during reproduction. , Edited by the TV Society, "Introduction to Video Discs and DADs," and VTR editors (published by the Japan Broadcasting Press Association, NHK, "VTR Technology"). The VTR editor controls the playback VTR and the recording VTR based on the time code (for example, SMPTE time code) recorded on the video tape.
Temporarily housed on floppy disk etc. by recorder,
The control content is reproduced.

In addition to this, a VTR having an automatic special reproduction function is disclosed in Japanese Patent Application No. 59-120963. Since the control information is recorded in the form of a cue signal on the linear track of the tape itself that records the video signal, a simple mechanism is required and data management is easy, but on the other hand, complicated operation control and control are required. Not suitable for list of contents.

[Problems to be solved by the invention]

In a conventional apparatus that controls the reproduction procedure by a program, it has been difficult to perform a complicated operation such as a loop operation such as slow reproduction of a specific section N times and rewinding of M frames. Further, even when the control data is stored on a floppy disk, there is a problem in that the control contents of the entire tape cannot be grasped by the control data alone.

In addition to video tapes, recording media capable of recording a large number or a long period of time include optical discs, video discs, and magneto-optical discs. Among them, there is a high demand for reproducing a desired video by a desired reproducing operation, and the same problem as in the case of a video tape is encountered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a program reproducing apparatus which can program-control a video reproducing apparatus, and which holds the contents of the control so that the user can easily confirm the contents.

[Means for solving the problem]

A program reproducing apparatus according to the present invention is configured to store a representative image together with a recording position of an image to be reproduced on a first recording medium and reproduction management information related to a reproducing operation on a second recording medium different from the first recording medium. And reproducing and controlling the reproduction of the first recording medium based on the reproduction management information reproduced from the second recording medium.

[Action]

By also recording the representative image of the image to be reproduced on the second recording medium, it becomes easy to list the contents of the first recording medium.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a basic configuration block diagram of an embodiment in which a VCR playback control information is stored in a still video disc by a still video recording / playback apparatus. 10 is video (and audio)
A VTR 14 for reproducing information from the tape-shaped recording medium 12 is a still video recording / reproducing device 18 for recording a still image and its ID information on a still video disk 16 and reproducing from the disk 16 and a monitor 18. . Moving image information (and audio information) and time information (time code indicating recording position, recording time, etc.) corresponding to the moving image information are transferred from the VTR 10 to the still video recording / reproducing device 14,
Conversely, the still video recording / reproducing device 14
A control signal for controlling the operation of TR10 is transferred. video·
The reproduced video (and audio) from the tape 12 or the reproduced still image from the disk 16 is applied to the monitor television 18 as appropriate. Hereinafter, the processing procedure will be described in more detail.

Various cuts (shooting scenes) shot by a video camera are recorded on the video tape 12, and a case will be described in which only necessary cuts are selected and the program is reproduced. That is, first, the reproduction method is recorded on the still video disc 16 for each necessary cut. FIG. 2 is a block diagram illustrating FIG. 1 in more detail.

In the VTR 10, reference numeral 22 denotes a rotary head for reproducing a video signal recording area of the video tape 12, reference numeral 24 denotes a fixed head for reproducing control tracks, and reference numeral 26 denotes a system controller for controlling the VTR 10 as a whole. Video signal processing circuit
28 processes the reproduction signal from the rotary head 22 and outputs it as a composite video signal. CTL processing circuit 3
0 shapes the waveform of the CTL signal from the fixed head 24 and transfers the CTL coding to the system controller 26 as a digital signal. The system controller 26 decodes the time code.

In the still video recording / reproducing apparatus 14, reference numeral 32 denotes a system controller that controls each unit in a comprehensive manner. The system controller 32 transmits and receives signals to and from the system controller 26 of the VTR 10. Specifically, it receives a time code from the system controller 26. 34 is an ID generation circuit for generating an ID signal of the DPSK signal, 36
Is a disk for the video signal and the ID signal from the ID generation circuit 34.
A recording circuit for converting into a signal that can be recorded on 16, a recording amplifier 38, a recording / reproduction switch 40, a magnetic head for recording / reproduction 42, a reproduction amplifier 44, a reproduction amplifier 46, and a reproduction signal from the head 42 A reproducing circuit for processing and outputting as a reproduced video signal, 48 is an ID detecting circuit for detecting and decoding an ID signal from the reproduced signal from the head 42, 50 is a frame memory, 51 is a signal of a reproduced still image from the disk 16 A switch for selecting between the video signal and the video signal from the VTR 10, a switch 52 for selecting a moving image / still image, and a signal processing circuit 54. Signal processing circuit 54
Is a function of generating a character according to a time code and superimposing it on a video signal, for example.

At the time of normal reproduction of the VTR 10, the output of the video signal processing circuit 28 is applied to the monitor device 18 via the switch 52 and the signal processing circuit 54, and necessary information among the video confirmed by the monitor device 18 is output. The information for reproduction management is processed and recorded on the disk 16 as one cut at a time. Here, as information for reproduction management, time information of a start point and an end point of one cut, and an arbitrary one screen (for example, the first screen) which can easily determine what the cut is. Field). Still
The frequency allocation of the recording format of the video disk is as shown in FIG. 3, in which A is a luminance signal FM-modulated, B is a color signal FM-modulated line-sequentially, and C is a digital signal. DP with data as ID code
SK modulated.

FIG. 4 shows bit allocation in one field of the ID code. 27 bits are prepared as a user area. For example, as shown in the figure, an address, designation of a reproduction speed, presence / absence of display, and the like are set.

When a cut for program reproduction is determined, information for reproduction management is recorded on the still video disk 16. In this case, the switch 40 is connected to the contact a, and the recording circuit 36 receives the DPSK signal from the ID generation circuit 34 and the VT
Processes the video signal from R10 (video signal processing circuit 28),
The above-mentioned frequency multiplexed signal is used. The recording amplifier amplifies it and records it on the disk 16 by the head 42. In this way, information for playback management of a large number of cuts is stored on the disc 16.
Are sequentially recorded.

When the disk 16 is reproduced, the switch 40 is connected to the contact b, and the reproduction circuit 46 reproduces a video signal from the reproduction signal from the head 42. The ID detection circuit 48 decodes and outputs an ID signal from the reproduced signal.
Frame memory 50, switch 5 according to the ID signal from
1, 52, the signal processing circuit 54 is controlled. Frame memory 50
Is the timing at which the signal is taken into the memory 50.

Next, how the reproduction is controlled according to the information setting of the user area in FIG. 4 will be described. 4 for the address
Since × 4 bits are used and correspond to the 4-digit time code in the case of the VHS CTL coding described above, the time code indicating the start of the cut is stored in 16 bits of the address.

The next “speed” (2 bits) indicates the speed at which the corresponding cut is reproduced. N is the tape feed speed,
Assuming that N = 1 is normal reproduction, for example, 00: N = 1 (normal) 01: N <1 (slow) 10: 1 <N <MAX (search) 11: N = MAX (FF or FR) .

“Display” (2 bits) indicates the video source to be displayed by the monitor device 18 when the tape 12 in the corresponding cut section is being transferred. For example, 00: Video tape 12 switch 52 on contact a side 01: Disk 16 switch 51 on contact b side Switch 52 on contact b side 10: Frame memory 50 switch 51 on contact a side Switch 52 on contact a 11: No display Muted by the signal processing circuit 54.

One bit of "slave control" is used when the video tape 12 is edited by connecting the slave VTR 19 as shown in FIG. For example, 0: recording standby 1: recording state.

“Others” defines other uses, and may basically be omitted. Four operation modes are specified by the first two bits. For example, 00: special playback speed plays the role of the lower bits of “speed”.

01: Memory special playback special effect 10: Write instruction to color back memory 11: Other control of color tone and external device. The following four bits specify the details of each of the previously specified modes. For example, in the special reproduction speed, 16 reproduction speeds can be set for each of slow (01) and search (10). When normal speed (N = 1) is specified
If it is 00, the last four digits may be used to determine the still time.

In addition, the still video disc has a spare track for controlling the whole separately from the first to 50th tracks which are usually used. May be defined. Then, complicated sequence control can be performed as a whole.

In accordance with the playback management information obtained by playing the disk 16 for each track, the system controller 32 of the still video recording / playback apparatus 14
6 and controller 56 switches 51,5 as described above.
2. Control the frame memory 50 and the signal processing circuit 54. FIG. 6 shows a flowchart of the automatic reproduction. The reproduction management information is reproduced from the first track of the disk 16 (S
1, 2), the control data is transferred to the VTR 10, and the VTR 10 is operated as instructed (S4). "Address" of track 2
A is read (S5), compared with the time code T from the VTR 10, and the tape 12 is sent until T becomes greater than or equal to A (S6,
7). When T becomes greater than or equal to A, the data of the second track is read (S8, 2), and the process proceeds in the same manner until there is no more data (S3).

By preparing several kinds of such still video discs, the same video tape can be enjoyed with different reproduction.

As shown in FIG. 7, the reproduction data of the still video disk 16 may be displayed on a multi-screen. Since the disk 16 has 50 tracks, a multi-screen consisting of a 5 × 5 matrix is composed of two screens, and
The contents of one disk 16 can be confirmed by looking at only one screen, and the list of contents of the disk 16 can be easily confirmed. It is preferable to superimpose control information such as time information and playback speed on each small screen of the multi-screen. Such a multi-screen can be realized by shifting the address in the horizontal direction by reducing the period of the sampling pulse of the controller 56 to 1/5, which is a technique well known as digital television.

Also, an ID data storage memory for 50 tracks is provided in the controller 56, and at the start of reproduction, all ID data is read first to display titles not recorded on the video tape 12 (for example, cut 17 in FIG. 7). ) Can be displayed at the beginning of the playback screen.

In the above embodiment, a video tape was used as the first recording medium and a still video disk was used as the second recording medium. However, the present invention is not limited to this. May be used.

〔The invention's effect〕

As can be easily understood from the above description, according to the present invention, complicated program reproduction can be realized, and the equipment required for this can be a commercially available device and can be configured at low cost.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing a more detailed configuration of FIG. 1, and FIG.
FIG. 4 shows the frequency allocation of the recording signal of the video disk 16, and FIG.
Map, FIG. 5 is a block diagram showing the configuration when the present invention is applied to an automatic editing system, FIG. 6 is a flowchart of automatic reproduction, and FIG. 7 is a display example on a multi-screen. 10 VTR, 12 Video tape, 14 Still video recording / reproducing device, 16 Still video disc,
18 ... Monitor device, 19 ... Slave VTR

Claims (1)

(57) [Claims] 1. A representative image is recorded on a second recording medium different from the first recording medium together with a recording position of an image to be reproduced on a first recording medium and reproduction management information relating to a reproducing operation. And a program reproducing device for program-controlling reproduction of the first recording medium based on the reproduction management information reproduced from the second recording medium.