JPS61265983A - Multi-video display system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a multi-image display system, and more particularly, to a multi-image display system in which parts of a single image or independent images are displayed on each of a plurality of image display devices.

2. Description of the Related Art Conventionally, a plurality of video display devices are arranged, and each video display device displays each part of a single video to represent a single video as a whole. There is a multi-image display method for displaying images.

A conventional multi-video display system is configured as shown in FIG. Multiple CRTs (video display devices) 1a to 1d
Each of the video disc players 2a to 2d displays the video reproduced by the respective video disc players 2a to 2d. Video disc player 2a-2
d are mutually connected to the personal computer 3,
A signal indicating the operating state of each of the video disc players 2a to 2d is supplied to the personal computer 3, and the personal computer 3 controls the video disc players 2a to 2.
While monitoring the operating status of each video disc player 2a to 2d, a command for instructing the operation is supplied to each of the video disc players 2a to 2d. As a result, each of the video disc players 2a to 2d reproduces the designated frame address of the video disc loaded therein.

Problems to be Solved by the Invention In the system shown in the second figure, the operations of the video disc players 2a to 2d are controlled by a program executed by a personal computer.

As a result, each of the video disc players 2a to 2d simultaneously reproduces a predetermined frame address of the disc loaded therein, and plays each part of a single video onto the CRTs 1a to 1.
A single image is displayed on all CRTs 18 to 1d.

However, in the conventional method, one personal computer 3
Since the operation of all the video disc players 2a to 2d is controlled by the controller, there is a problem that the program of the personal computer 3 must be changed every time the number of CRTs and video disc players is increased or decreased. . Furthermore, since each video disc player 2a to 2d must be connected to the personal computer 3, the number of connection cables is large, and the number of video disc players 2a to 2d is limited by the number of connection terminals on the personal computer 3. There was a problem that it could be done.

Therefore, it is an object of the present invention to provide a multi-video display system that solves the above problems by using first and second recording medium playback devices and a plurality of video display devices.

Means for Solving the Problems In the present invention, the first recording medium reproducing device generates a timing signal when reproducing the video recording media loaded in a predetermined order. The second recording medium reproducing device reproduces the installed video recording media in a predetermined order,
When the above timing signal is supplied, reproduction of a predetermined position is started. The videos reproduced by the first and second recording medium reproducing devices described above are displayed on a plurality of video display devices as independent videos or videos of each part of a single video. , Operation In the present invention, when transitioning from a state in which independent images are displayed on each of a plurality of image display devices to a state in which each part of a single image is displayed on each of a plurality of image display devices, the first recording medium The second timing signal is generated by the playback device.
The recording medium reproducing apparatus starts reproducing a predetermined position of the loaded video recording medium, and the reproduction timings of the first and second recording medium reproducing apparatuses are matched.

Embodiment FIG. 1 shows a block diagram of an embodiment of the multi-video display system according to the present invention. In the same figure, 108 to 10d are CRTs as video display devices, and CRTs 10a to 1
0d displays images using video signals supplied from video disk players 11a to 11d, respectively.

Each of the video disc players 118 to 116 is composed of a main body part 20 and an interface part 21, as shown in FIG. The video disc 22 mounted on the main body 20 is rotated by a playback mechanism 23 at a predetermined rotation speed, and the pickup circuit in the playback circuit 24 moves the video disc 22 to a desired playback position on the video disc by the playback mechanism 23. Reading and playback is performed. The reproducing circuit 24 extracts a video signal and an audio signal from the read signal of the video disc 22 and outputs them from terminals 25 and 26. The video signal outputted from this terminal 25 is supplied to the CRTs 10a to 10d shown in the first diagram. CPt
J 27 executes the program stored in the memory 28 and plays the playback mechanism 23. It controls the operation of each of the reproducing circuits 24.

An operation instruction signal generated by operating the keyboard 29 of the interface section 21 is sent to the CP via the interface circuit 30.
The signal is supplied to tJ27 to instruct operation modes such as playback and stop, playback speed, search, and the like. In addition, the program entered on the keyboard 29 is transferred to the interface circuit 30.
It is stored in the memory 28 via the CPU 27. Further, a signal instructing the on/off state of the auto start switch 31 is supplied to the CPU 27 via the interface circuit 30. Branch input pulses, sequence start pulses, etc. from other video disc players enter the input terminal 32 and are supplied to the CPLJ 27 via the interface circuit 30, and enter the input terminal 32 from the output terminal 33. Branch input pulses, sequence start pulses, etc. are outputted via the interface circuit 30, and sequence end pulses etc. from the CPU 27 are outputted via the interface circuit 30.

By the way, the program stored in the memory 28 and executed by the CPU 27 is programmed in sequence units. A sequence is a concept that instructs a single operation on the video disc 22, and for example, from frame address 1000 to 20 on the video disc 22.
This instructs operations such as normal forward playback up to address 00 or still playback for 10 seconds at address aooo.

The following parameters are provided within a single sequence: ■Sequence number ■Start frame address ■End frame address ■Operation mode ■Frame address display ■Audio output mode ■Next mode, of which sequence numbers "1" to "99" can be used, and the operation mode is playback direction (forward/ backwards).

Instruct playback speed, still time, etc. Netast mode instructs the operation after this sequence operation is completed, and includes stop to end the program's operation control, chain to instruct the next sequence to be executed, repeat to repeat the executed sequence, and standby mode. There are branches, etc. that, when a branch number is specified externally, shift to a sequence according to the branch number.

It should be noted that the video disc player generates a sequence end pulse at the time when each of the sequences with sequence numbers 65 to 97 ends, and outputs this from the output terminal 33.

Returning to Figure 1, the video disc player l
La is the master device (first recording medium reproducing device), and the sequence end pulse output from the E10tJT terminal of the output terminals 33 is the slave device (second recording medium playback device).
The signal is supplied to the B/IN terminal of the input terminals 32 of the video disc player 11b, which is a recording/medium reproducing device. Further, the sequence end pulse (timing signal) from the video disc player 11a (master machine) is transmitted from the input terminal 32 of the video disc player 11t to the output terminal 33 of the video disc player 11C, which is the slave machine. It is further supplied to the B/IN terminal of the input terminals 32 of the slave device 11d via the input terminal 32 and output terminal 33 of the video disc player 11c. Here, when each of the video disk players 11a to 116 is holding the next mode branch and a pulse is input to the 8/IN terminal, the sequence shifts to the sequence specified by the branch number "5".

Also, video disc players 11d and 11c.

Each power input terminal of 11b is connected to the video disc player 1.
Video disc players 118 to 11 are connected to the power output terminals of each of video disc players 11c, 11b, and 11a, and power is supplied to the other video disc players 11b to 11d at the same time when the video disc player 11a is powered on.
The auto start switch 31 of each of the six video disk players 118 to 11 is in an on state.
d automatically executes the program from sequence number 99 after power is turned on.

CP of video disc player lla which is the master machine
LJ27 executes the process shown in FIG. 4 (A>.CP
After the video disc player 11a is powered on, U27 determines whether the auto start switch 31 is on (step 40). In the method shown in the first diagram, the auto start switch 31 is in the on state, so the sequence with sequence number 99 is executed (step 41), but if it is in the off state, the operation is performed according to the operation instructions from the keyboard 29 shown in the third diagram. The normal manual operation mode is entered (step 42). In the sequence with sequence number 99, as shown in FIG. 5(A), the image in the upper left portion of a single image is reproduced from a predetermined frame address on the video disk 22 and displayed on the CRTloa. Sequence number @
When the execution of the nine sequences is completed, the process moves from step 43 to step 44, where IIJtll moves to sequence number 65 designated by the chain in the next mode of sequence number 99. In the sequence with sequence number 65, as shown in FIG. 5(B), for example, an image of a tank is reproduced from a predetermined frame address on the video disk 22 and displayed on the CRTloa (step 45).

Thereafter, when it is determined in step 46 that the sequence with sequence number 65 has ended, a sequence end pulse (timing signal) is generated and the video disc player 11
It is output from the output terminal 33 of a (step 47). Thereafter, control shifts to sequence number @10 designated by the netast mode chain with sequence number 65 (step 48). As a result, the sequence with sequence number M10 is executed, and as shown in FIG.
Step 49). When it is determined in step 50 that the sequence with sequence number 10 has ended, the CPLJ 27 of the video disc player 10a ends the processing programmed as the sequence.

Video disc players 11b to 11 which are slave machines
Each of the six CPs (J27 executes the process shown in FIG. 4(B) at the same time as the master machine is powered on.

First, the state of the autostart switch is determined (step 60), and the process moves to step 61 here. however,
If this is in the off state, the manual operation mode is set (step 62). Sequence number 99 in step 61
In the sequence, the video disc player 11b
-11d each reproduce the lower left part, upper right part, and lower right part of the single video shown in FIG. 5(A) from a predetermined frame address of each video disk,
10d. When it is determined in step 63 that the sequence with sequence number 99 has ended, control is transferred to sequence number 50 by the next mode chain with sequence number 9 (step 64). Note that the sequence with sequence number 99 is set so that the execution time of step 61 is the same as the execution time of step 41.

When the sequence with sequence number 50 is executed (step 65), each of the video disk players 11b to 11d is operated by, for example, an airplane, a rocket, or the like, as shown in FIG.
Play a different image from the ship and display this on CRT10b~10d
Display each. When it is determined that the sequence with sequence number 50 has ended (step 66), the CPtJ 27 of each of the video disc players 11b to 11 (I) enters a standby state in the branch in the next mode with sequence number 50 (step 67). The sequence of sequence number 50 is set in each of the video disc players 11b to 11d of the slave machines to enter the standby state before the master machine finishes the sequence of sequence number 65.After entering the standby state, The CPU 27 of the slave machine is the input terminal 32 (7) B/I Nl
Step 68)
, upon the arrival of this sequence end pulse, the process moves to step 69. In step 69, sequence number 50
Control is transferred to sequence number 10 designated by branch number "5" in the next mode of . As a result, the sequence with sequence number 10 is executed (step 70), and the video disc players 11b to 1
1d are the lower left part of the single image shown in FIG. 5(C),
The images in the upper right part and lower right part are played back from the predetermined frame address (restart position) of each video disc, and the C
Displayed on each of RTs 10b to 10d. When it is determined in step 71 that the sequence with sequence number 10 has ended, the CPU 27 of each of the video disc players 10b to 10d ends the processing programmed as the sequence.

In this way, each of the video disc players 11a to 11d plays the video disc according to a sequence inputted in advance, and the sequence end pulse generated by the video disc player 11a causes the video disc player 1 to
Each of 1b to 116 transfers control to sequence number 10 and starts reproducing a predetermined frame address of the disk loaded therein. In other words, the reproduction timings of the video disc players 11b to 11d are matched by the sequence end pulse of the video disc player 11a.

Therefore, after the above sequence end pulse is generated, as shown in FIG.
As shown in C), each part of a single image is transferred to CRTs 10a to 1.
0d can be displayed at the same time, and even if this single video is a moving image, the operation timing of each part is completely the same.

In addition, in the system shown in the first figure, the video disc player 11
A conventional personal computer is not required to control the entire operation of a to 11d, and when adding a video disc player and CRT, it is only necessary to create a sequence program for the additional video disc player, and the video disc There is no need to change the sequence programs of the players 11a to 11d. Further, since the video disc players 118 to 11d can be connected to each other by connecting adjacent ones, the number of slave machines is not limited by the number of connection terminals of the video disc player 11a of the master machine.

Effects of the Invention As mentioned above, the multi-video display method according to the present invention has the first
Since the playback timings of the first and second recording medium playback devices are made to coincide with each other by the timing signal generated by the recording medium playback device of The display timing of each part matches, the conventional personal computer for operation control is no longer required, and there is no need to change the playback order of the existing recording media playback device when adding a video display device. are doing.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the method of the present invention, and FIG.
The figure is a block system diagram of an example of a conventional system, FIG. 3 is a block system diagram of an embodiment of the video disc player shown in FIG. 1, and FIG. 4 is a block system diagram of an example of the video disc player shown in
FIG. 5 is a flowchart of one embodiment of the processing executed by the PU, and is a diagram for explaining the image displayed on the CRT shown in FIG. 10a to 10d-CRT, 11a to 11d-
...Video disc player, 27...CPU, 2
8...Memory, 29...Keyboard, 30...Interface circuit, 31...Auto start switch, 32...Input terminal, 33...Output terminal, 40-
50.60-71...step. Patent applicant: TIATSUKU Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] a first recording medium reproducing device that reproduces the installed video recording medium in a predetermined order and generates a timing signal at a predetermined time; and a first recording medium reproducing device that starts operating at the same time. a second recording medium reproducing device that reproduces a video recording medium mounted on the video signal recording medium in a predetermined order and starts reproducing a predetermined position of the video signal recording medium when supplied with the timing signal; a plurality of video display devices each displaying the video reproduced by the first and second recording medium reproduction devices, and at least the plurality of video display devices display independent video on each of the plurality of video display devices; A multi-video display method characterized in that the reproduction timing of each of the first and second recording medium reproduction devices is matched by the timing signal when transitioning to a state in which each portion of a single video is displayed.