JP2679226B2 - Control code input device for variable sound field - Google Patents

Description

The present invention relates to a vertical synchronizing signal included in a video signal, which is synchronized with the video, and a control code corresponding to an arbitrary sound field is synchronized with the video. A sound field that can repeatedly realize a sound field that matches the image intended for recording the control code during playback by automatically transmitting and recording at a fixed time until the next control code is sent. It is a variable device control code input device.

Conventional technology In recent years, CDs, DAT, and S that pursue high sound quality and high image quality
-VHS, high-definition, etc. have become popular. Further, in recent years, there is an increasing need for new AV system devices that combine video and sound.

The configuration of the conventional control code input device for sound field variable device,
This will be described below with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of a conventional control code input device for a sound field varying device.

In FIG. 2, 1 is a sound field changing device capable of creating an arbitrary sound field, 2 is control code output means for outputting a control code uniquely associated with sound field data, and 8 is a video signal and an audio signal. A first video tape recorder (hereinafter referred to as a VTR) for outputting, 9 is a second VTR for recording a video signal, an audio signal and a control code on a moral signal track, and 6 is a monitor It's a TV.

The operation of the conventional control code input device for a sound field varying device configured as described above will be described below.

The video signal reproduced by the first VTR 8 is input to the monitor TV and the second VTR 9. Similarly, the audio signal reproduced by the first VTR 8 is input to the second VTR 9 and also to the sound field varying device 1 that creates an arbitrary sound field. The viewer watches the image reproduced on the monitor TV 6, listens to the sound reproduced by the sound field varying device, and selects the sound field suitable for the image by the control code output means 2. The control code uniquely associated with the selected sound field data is input to the sound field varying device 1 to reproduce the sound field intended by the viewer, and the control code is the monaural sound of the second VTR 9. It is recorded on the signal track. With these operations, the second
A control code for controlling a sound field synchronized with a video signal and a stereo audio signal is recorded on the VTR 9.

With such a configuration, the sound field can be repeatedly reproduced in synchronization with the video.

SUMMARY OF THE INVENTION However, in the above-mentioned configuration, firstly, the control code may not be written depending on the position of the tape to be reproduced at the time of reproducing the control code. Secondly, there is a problem that the sound field cannot be reproduced faithfully to the viewer's intention at the time of recording the control code, for two reasons that it is difficult to closely synchronize with the video.

In view of the above problems, the present invention takes out a vertical synchronization signal included in a video signal, synchronizes with the video, and sends a control code corresponding to an arbitrary sound field to the video to send the next control code. It provides a control code input device for a sound field variable device that can automatically realize a sound field that matches the image intended for recording the control code during playback by automatically transmitting and recording at fixed intervals until it comes. Is.

Means for Solving the Problems In order to achieve this object, a control code input device for a sound field varying device of the present invention outputs a control code for controlling a sound field varying device which creates arbitrary sound field data. When,
The video sync signal separating means for separating the vertical sync signal contained in the video signal is synchronized with the video sync signal obtained from the video sync signal means by a built-in timer function, and the control code is set to the following control code. It is provided with a recording means for outputting to the outside in synchronism with the video vertical synchronizing signal at regular time intervals until it is sent.

Action Takes out the vertical sync signal contained in the video signal to synchronize with the video, and at the fixed time until the next control code is sent in synchronization with the video and the control code corresponding to an arbitrary sound field. By automatically transmitting / recording, it is possible to provide a control code input device for a sound field varying device that can repeatedly realize a sound field that matches an image intended for recording a control code during reproduction.

Embodiment Hereinafter, a control code input device for a sound field varying device according to an embodiment of the present invention will be described with reference to the drawings.

 FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, 1 is a sound field changing device capable of creating an arbitrary sound field, 2 is control code output means for outputting a control code uniquely associated with sound field data, and 3 is a video signal and a sound signal. Audio / visual signal input means for outputting, 4 is audio / visual signal recording means capable of recording a control code uniquely associated with a video signal, a sound signal and sound field data, and 5 is a vertical signal included in the video signal. A video sync signal separating means for extracting a sync signal, 6 is a monitor TV, and 7 is a control code uniquely associated with the sound field data in synchronization with a vertical sync signal included in the video signal at regular time intervals. The control code recording means outputs to the audio / visual signal recording means.

The operation of the conventional control code input device for a sound field varying device configured as described above will be described below with reference to the drawings.

The video signal generated by the audio / visual signal input means 3 is input to the monitor TV 6, the audio / visual signal recording means 4 and the video sync signal separating means 5 for extracting the vertical sync signal contained in the video signal. Similarly, the audio signal generated by the audio / visual signal input means 3 is input to the audio / visual signal recording means 4 and the sound field varying device 1 for creating an arbitrary sound field.
Is input to The viewer watches the image reproduced on the monitor TV 6, listens to the sound reproduced by the sound field varying device, and selects the sound field suitable for the image by the control code input means 2. On the other hand, the control code uniquely defined in the selected sound field is input to the sound field changing device 1, and the sound field intended by the viewer is reproduced. On the other hand, the control code is input to the control code recording means 7.

The control code recording means 7 records the control code as an audio / visual signal in synchronization with a vertical synchronizing signal included in the image input from the image synchronizing signal separating means 5 by using a timer function built in itself. Record in means 4. The control code recording means 7 records the currently accepted control code in the audio / visual signal recording means 4 at regular time intervals, for example, in synchronization with the vertical synchronizing signal until the next control code is sent. Keep doing
However, the control code recording means is set so as not to accept the same control code as the currently accepted control code. All the above operations are performed in real time.

With such a configuration, it is possible to provide an input device for a sound field varying device that can repeatedly realize a sound field that matches a video intended when recording a control code during reproduction.

According to the present invention, the following control code is sent in synchronization with an image by extracting a synchronization signal included in the image signal and synchronizing a control code corresponding to an arbitrary sound field with the image. Is an excellent control code for a sound field varying device that automatically transmits and records at fixed time intervals, so that the sound field that matches the intended video when recording the control code can be repeatedly realized during playback. The input device can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control code input device for a sound field varying device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional control code input device for a sound field varying device. 1 ... Sound field changing device, 2 ... Control code output means, 3 ...
... audio / visual signal input means, 4 ... audio / visual signal recording means, 5 ... video synchronizing signal separating means, 6 ... monitor TV, 7 ... control code recording means, 8 ... first VTR, 9 …… Second VTR.

Front Page Continuation (72) Inventor Akihisa Kawamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Hiroko Yoshida 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72 ) Inventor Katsumasa Sato 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP 63-87000 (JP, A) JP 62-219899 (JP, A) JP A 64-68799 (JP, A) JP 63-183495 (JP, A) JP 58-68400 (JP, A) JP 1-279700 (JP, A) Actual development 64-32599 (JP, U)

Claims (1)

(57) [Claims] 1. An output means for outputting a control code for controlling a sound field varying device for creating arbitrary sound field data, and a video sync signal separating means for separating a vertical sync signal included in a video signal. The timer function synchronizes with the video sync signal obtained from the video sync signal means, and the control code is synchronized with the video vertical sync signal at regular intervals until the next control code is sent to the outside. A control code input device for a sound field varying device, comprising: a recording means for outputting.