JPH012482A - Multiplexed video signal processing method and apparatus - 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 Industrial Application] The present invention relates to a multiplex video signal processing device suitable for use in, for example, a video game device.

[Conventional technology]

FIG. 2 is a block diagram of a conventional television game device.

Reference numeral 1 denotes a main body, which includes a CPU 2 and an image controller 3. 4 is a ROM cartridge installed in the main body 1;
5 is an operation switch operated when performing a predetermined input; 6
is a television receiver having a CRT or the like. When the ROM cartridge 4 is installed in the main body 1 and the operation switch 5 is operated, the CPU 2 reads data corresponding to the operation of the operation switch 5 from the ROM cartridge 4. C
PtJ2 creates an image corresponding to the read data,
The image is displayed on the television receiver 6 via the image controller 3.

This game device has the advantage of being able to enjoy many different games by replacing the ROM cartridge 4, but on the other hand, since all images are drawn using cp, u2, so-called computer graphic style images Therefore, it has the drawback of lacking a sense of realism.

FIG. 3 shows a video game device that is improved in this respect. A videotape (not shown) on which real video information (images) is recorded is attached to the videotape recorder 11. The video tape recorder 11 plays back the video tape, and the output video signal VS is supplied to the TV receiver (& hall 6) via the video adder 12, and a predetermined image is displayed. ) Built-in optical sensor 1
When a predetermined target TG on the display screen is captured by the optical sensor 14, the optical sensor 14 generates an output signal. At this time, the superimpose device 13 generates an image indicating that the target has been hit in response to the signal from the optical sensor 14. The video signal is added to the reproduced signal from the video tape by a video adder 12 and supplied to the television receiver 6. As a result, the image from the superimposing device 13 is superimposed on the reproduced image from the videotape and displayed. At this time, the superimpose device 13 also generates a numerical image signal corresponding to a score such as the number of hits on the target, and the television receiver 6
perform score display MK.

Since this device displays the playback signal from the videotape, it can provide a realistic image, but the disadvantage is that the same image is displayed even after hitting the target as before hitting the target, and there is little change. There is.

The device shown in FIG. 4 is a further improvement in this respect. In this device, a reproduction signal from a video tape recorder 11 is subjected to predetermined processing by a processing circuit 21 and then supplied to a video adder 12. On a video tape, two pieces of video information A and B are sequentially and intermittently multiplex recorded in one horizontal scanning period (H)i. Therefore, if the signal of one predetermined horizontal scanning line is a signal of video information A (A, A2, etc.) as shown in FIG. is video information B (B
1.82 etc.). Video information A is, for example, an image of a hit on a target, and is a video information.

Counter information B is an image in case the target is not hit. When a signal indicating that the target has been captured is input from the optical sensor 4, the control circuit 23 outputs a control signal to the video switch 24, and the video information B is displayed at the bottom of the figure at the timing of the horizontal scanning line of the video information A. The video switch 24 is switched to the upper side in the figure at the timing of the horizontal scanning line. The interpolation signal generation circuit 22 clamps the luminance signal portion of the reproduced signal from the video tape recorder 1 to the black level and outputs the clamped signal. As a result, the output of the video switch 24 is
The result is as shown in Figure (b). That is, only video information A is displayed intermittently every day.

Conversely, when the target is not captured, video switch 2
4 is switched to the upper side of the figure at the timing of the horizontal scanning line of video information A, and to the lower side of the figure at the timing of the horizontal scanning line of video information B, and only video information B is displayed intermittently every day. be done.

Therefore, different images can be displayed depending on whether the player hits the target or not, allowing the user to enjoy a game with variety.

[Problem that the invention seeks to solve]

However, in this way, when the device of FIG. 4 displays one video information A (or B), the other video information B (
Alternatively, since A) is clamped to the black level, the horizontal scanning line is actually reduced to approximately 1/2, which has the disadvantage that the entire screen becomes dark.

Therefore, the present invention is intended to enable changing images to be viewed on a brighter screen.

[Means for solving problems]

The multiplexed video signal processing method of the present invention includes the steps of reproducing a plurality of pieces of video information, each of which is intermittently multiplexed in units of horizontal scanning lines, fields, or frames, from a recording medium; The method includes the steps of: delaying the playback signal by a time corresponding to the unit; and selecting the delayed playback signal and the non-delayed playback signal in order for each unit, and outputting one video information. It is characterized by

The multiple video signal processing apparatus of the present invention reproduces video information from a recording medium in which a plurality of pieces of video information are sequentially recorded in units of horizontal scanning lines, fields, or frames, and each piece of video information is intermittently multiplexed. a reproduction means; a delay means for delaying the reproduction signal from the reproduction means by a time corresponding to the unit; a switch means for selecting either the reproduction signal delayed by the delay means or the reproduction signal not delayed; The present invention is characterized by comprising a control circuit that generates a control signal for switching the switch means so that a reproduction signal of video information is output.

[Function] For example, on a recording medium such as a videotape, multiple pieces of video information are recorded in units of horizontal scanning lines, fields, or frames, and a reproduction means such as a videotape recorder reproduces this recording medium, Output a signal. A portion of the reproduced signal is delayed by a time corresponding to a unit by a delay circuit. The switch means selects and outputs either the reproduced signal delayed by the delay circuit or the reproduced signal not delayed. The switch means is switched to output a reproduction signal of one piece of video information by a control signal output from the control circuit. Therefore, the display screen does not become dark.

〔Example〕

FIG. 1 is a block diagram of the multiplexed video signal processing device of the present invention applied to a television game device. Parts corresponding to those in the above case are denoted by the same reference numerals, and detailed description thereof will not be repeated. Therefore, it will be omitted (the same applies hereafter). The apparatus of the present invention has basically the same structure as the conventional apparatus shown in FIG. 4, except for the processing circuit 21. Processing circuit 21 of the present invention
is one day (one horizontal scanning period) delay line 31, control circuit 32,
Video switch 33. Consists of a 1/2H delay line 34 and a video switch 35. The one-day delay line 31 has its input connected to the output of the video tape recorder 11, and its output connected to one input of the video switch 33, respectively. The other input of video switch 33 is directly connected to the output of video tape recorder 11. Control circuit 32
The output of the video tape recorder 11 and the output of the optical sensor 14 are supplied to the. Also, the control circuit 32
The control signals outputted by the video switches 33 and 35 are supplied to the video switches 33 and 35. The output of the video switch 33 is connected to a 1/2H delay line 34 and one input of a video switch 35, respectively. The other input of the video switch 35 is connected to the output of the 1/2H delay line 34. In addition, the output of the video switch 35 is connected to the video adder 12, and the output of the superimposing device 13 to which the output of the optical sensor 4 is supplied is connected to the video adder 12. is supplied to the television receiver 6, as in the case described above.

Therefore, on the video tape as a recording medium installed in the video tape recorder 11 as a reproduction means, video information A and B are alternately displayed every 1H, and each of them is Multiple recording is performed intermittently. As a result, the playback signal output from the video tape recorder 1 has video information as shown in FIG. 6(a).
(A1, A, etc.) and B (B1.82, etc.) are present alternately every day. The optical sensor 4 outputs a predetermined signal to the control circuit 32 when it captures a predetermined target. At this time, the control circuit 32 detects a horizontal synchronizing signal from the reproduction signal of the video tape recorder 11, and outputs a first control signal synchronized with the horizontal synchronizing signal to the video switch 33. This first control signal causes the video switch 33 to be activated at the lower side of the figure when the horizontal scanning line of video information A is being reproduced, and at the lower side of the figure when the horizontal scanning line of video information B is being reproduced. Each can be switched on the upper side. The one-day delay line 31 serving as a delay means delays the reproduction signal output from the video tape recorder 11 by one day and outputs the output signal as shown in FIG. 6(b).

Therefore, the output of the video switch 33 that alternately selects the delayed playback signal and the non-delayed playback signal is shown in FIG. 6(C).
As shown, it becomes like this. Video information at a given horizontal scan line? [When A1 (A2) is output, the same video information A1 (A2
) are output continuously.

On the other hand, when the optical sensor 14 does not capture the predetermined target,
The second control signal causes the video switch 33 to switch to the upper side in the figure at the timing when the horizontal scanning line of video information A is reproduced, and to the lower side in the figure at the timing when the horizontal scanning line of video information B is reproduced. It will be done. As a result, the same video information B1 (B2) is continuously output in two consecutive horizontal scanning lines.

As in the case described above, an image when the target is hit is recorded as video information, and an image when the target is not hit is recorded as video information B.

Therefore, an image that changes in accordance with the output of the optical sensor 14 is output from the video switch 33.

The signal selected and output from the video switch 33 is 1/2
H delay line 34 or directly to video switch 35. - The control circuit 32 is the video recorder 11
detects a vertical synchronizing signal from the reproduced signal, outputs a control υU signal synchronized with the vertical synchronizing signal, and switches the video switch 35 to 1.
Switch each field. As a result, a signal delayed by 1/21-1 by the 1/2H delay line 34 and a signal not delayed are alternately output for each field, thereby preventing so-called skew distortion.

The output of the video switch 35 is the superimpose device 1
The signal is superimposed on the video signal outputted by the video signal 3, and is synthesized and displayed on the television receiver 6. The video switch 35 continuously outputs the same reproduction signal @ (luminance signal) for 2H. Therefore, the screen will not become dark.

Further, even in this case, since the signals of each horizontal scanning line have a strong correlation, the image does not look so unnatural.

FIG. 7 is a block diagram of another embodiment of the invention. In this embodiment, video information A and B are alternately multiplexed for each field on a video tape loaded in a video tape recorder 11, and a field memory 41 is used as a delay means. The composition of the count is the first
This is the same as in the figure. (The L video switch 33 can be switched for each field.

The playback signal of the video tape recorder 1 is as shown in Fig. 8(a).
As shown in , the field F (Fl, F
2, etc.) and field G of video information B (G, G2, etc.)
are arranged alternately for each field. NTSC
In the case of this method, one frame consists of two footholds,
Interlaced scanning is performed in two consecutive fields, and the number of scanning lines in one frame is 525 (odd number). Therefore, for example, if fields F1 and F2 are scanned from point W at the top left of the screen to point X at the bottom right, then fields G1 and G2 are scanned from point Y at the center of the screen to point Z at the bottom center. It turns out. Now, if the signal delayed by one field by the field memory 41 and the signal not delayed are alternately selected and output for each field by the video switch 33, the signal will be as shown in FIG.
b). That is, this signal is not a signal for interlaced scanning in two consecutive fields. Therefore, field F1 delayed by one field
, F2 are delayed by approximately 172 days by the 1/2H delay line 34 to generate the signals of fields F'1 and F'2.

As shown in FIG. 8(C), by selecting each of the signals of fields F1, F'1, F2, and F'2 by the video switch 35, a signal for interlaced scanning is generated.

The above explanation uses an example where different video information is intermittently multiplexed using horizontal scanning lines or fields as t positions, but frames can also be used as units when the screen changes relatively slowly. . In this case, in addition to the delay time caused by the delay means being the time corresponding to the frame,
The 1/2H delay line 34 and video switch 35 become unnecessary. It is also possible to multiplex record three or more different pieces of video information in each unit.

Furthermore, although a videotape is used as the recording medium in the above description, it is also possible to use this thin optical disc, CD-RON4, video disc, etc.

The present invention can be applied to devices other than video game devices as long as the device plays back and processes video signals from a recording medium in which a plurality of video signals are intermittently multiplexed in predetermined units. It is.

〔Effect of the invention〕

As described above, the present invention reproduces a plurality of video information that is intermittently multiplexed in units of horizontal scanning lines, fields, or frames, delays the time corresponding to each unit, and outputs either the delayed signal or the non-delayed signal. Select and output one piece of video information J: Since this is done, it is possible to view images with changes in a bright state.

[Brief explanation of the drawing]

FIGS. 1t and L are block diagrams of the video game device of the present invention;
Figure 2 is a block diagram of a conventional video game device;
The figure is a block diagram of a second embodiment of a conventional television game device, FIG. 4 is a block diagram of a third embodiment of a conventional television game device, FIG. 5 is a waveform diagram of the device of FIG. 6 is a waveform diagram of the device shown in FIG. 1, FIG. 7 is a block diagram of an embodiment of the present invention, and FIG. 8 is a principle diagram of the device shown in FIG. 7. 1... Main unit 2... CPt, i 3... Image controller 4... RO~1 Cartridge 5... Operation switch 6... ...TV reception '132 '1-M11...
...Video tape recorder 12...Video adder 13...Superimpose device 14...
... Optical sensor 21 ... Processing circuit 22 ... Interpolation signal generation circuit 23 ... iII! Control circuit 24...Video switch 31...1H delay line 32...Control circuit 33...Video switch 34...1/2) -1 Delay line 35...Video switch 41...Field memory patent applicant Oki Electric Industry Co., Ltd. Agent Patent attorney Former 1) Actual [11-eared telepicture device sheep] 1 praise 5 Wooden video game J (Okihitsu 2 figure)

Claims (1)

[Scope of Claims] 1. A step of reproducing a plurality of pieces of video information sequentially and intermittently multiplexed in units of horizontal scanning lines, fields, or frames from a recording medium, and a reproduction signal from the recording medium. A multiplexed video comprising the steps of: delaying the output signal by a time corresponding to the unit; and selecting one of the delayed reproduction signal and the non-delayed reproduction signal and outputting one piece of the video information. Signal processing method. 2. Reproducing means for reproducing video information from a recording medium on which a plurality of pieces of video information are sequentially recorded in units of horizontal scanning lines, fields, or frames and intermittently multiplexed, and reproduction from the reproducing means. a delay means for delaying a signal by a time corresponding to the unit; a switch means for selecting either the reproduced signal delayed by the delay means or the reproduced signal not delayed; A multiplex video signal processing device comprising: a control circuit that generates a control signal for switching the switch means so that the reproduction signal is output.