JPS63311659A - Compact disk system with video signal and its reproducing system - Google Patents

Abstract

PURPOSE:To simultaneously reproduce a video signal at the reproduction of an audio signal by providing a moving image signal part with digital audio signal and a still picture signal part without audio signal on a video signal part in the inside of a disk. CONSTITUTION:In reproducing a moving image signal part 13 with the audio of a compact disk 14 with video signal, a signal read by a pickup 15 is given to an audio signal reproducing circuit 17 and a signal reproducing circuit 21, where an audio signal and a picture signal are reproduced respectively. In reproducing an audio signal part 10, the still picture signal part 12 without audio signal is reproduced at first and its picture signal is stored in the still picture memory 21. In reproducing the audio signal part 10, the picture signal of the still picture signal part 12 is read from the still picture memory 21 and outputted from a video signal output terminal 20. Moreover, a selecting means 22 is operated by a key switch group 24 to select optionally plural still picture signals stored in the still picture memory 21 and to output them from the video signal output terminal 20, as well.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a compact disc with video, which is a digital audio disc having a video signal, and a system thereof.

Conventional Technology In general, optical discs are considered promising as information media due to their high information density and low noise, and have been commercialized as video discs and digital audio discs, as well as optical discs that can record, reproduce, or erase digital signals. Research and development has been carried out in recent years.

FIG. 4 shows an overview of a compact disc, which is a conventional general digital audio disc.

In this system, a PCM-converted digital signal is recorded in the form of a bit string on a resin substrate and reproduced by a semiconductor laser beam. In FIG. 91, 1 is a disk, 2 is a resin substrate, 3 is a bit string-shaped digital signal section notched in the resin substrate 2, 4 is a reflective film formed on its surface, and 5 is a digital signal section provided on the reflective film 4. 6 is a label printing film provided on the protective film 6, and 7 is a semiconductor laser beam for reproduction.

The reflective film 4 is necessary for reproducing digital signals, the protective film 5 is necessary for protecting the reflective film, and the label printing film 6 is necessary for identifying the disc.

Conventional compact discs can store up to 7 discs on a single disc.
A digital signal of 4 minutes and 40 seconds is recorded, and by reproducing this, only the audio signal portion is reproduced.

Furthermore, in recent years, a compact disc with video, which is a digital audio disc having a video signal section, has been developed. As shown in FIG. 3, this disc has an audio section 8 of up to 20 minutes on the inner circumference of the disc, and a video section 9 of up to 6 minutes of moving pictures with digital audio on the outer circumference of the disk.

Problems to be Solved by the Invention However, with the above configuration, it is not possible to simultaneously reproduce a video signal when an audio signal is reproduced; furthermore, the reproduction device displays only a single color image when an audio signal is reproduced. Since it is not possible to do so, there are problems such as a lack of entertainment elements.

In view of the above-mentioned problems, the present invention provides a video-equipped compact disc and its playback system that simultaneously plays back a video signal when playing an audio signal and has an entertaining element. .

Means for Solving the Problems In order to solve the above problems, the present invention provides a video signal portion and an audio signal portion within one disc,
The video signal section is configured to include a moving image signal section with digital audio and a still image signal section without audio.The still image signal section without audio is stored in advance and the above-mentioned still image signal section is stored when the audio signal is played back. The image information in the image signal section is simultaneously reproduced as video output.

Effect of the Invention The present invention has the above-described configuration, and includes a disc having a video signal section including a moving image signal section with digital audio and a still image signal section without audio, an audio signal section, and a still image signal section without audio. By having a memory for storing the still image signal portion and simultaneously reproducing the still image signal portion as a video output when reproducing the audio signal, it is possible to provide a compact disc with a video and a reproducing system thereof having an entertaining element.

Embodiment Hereinafter, a compact disc with video and a playback system thereof according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a plan view of a compact disc with video according to the present invention. 1o is an audio signal section provided at the inner peripheral portion of the disc. Reference numeral 11 denotes a video signal section provided on the outer periphery of the disc, of which 12 is a still image signal section without audio, and 13 is a moving image signal section with digital audio.

A plurality of still images are provided in the still image signal section 12 without audio.

To play such a compact disc with video that includes a plurality of still images, a dedicated compact disc with video playback system is required.

FIG. 2 shows a block diagram of a compact disc playback system with video according to an embodiment of the present invention, in which 14 is a compact disc with video, 15 is a big pickup for reading recorded signals, 18 is a spindle motor, and 17 is a pick-up 15 for reading. 18 is a video signal reproducing circuit that reproduces a video signal among the signals read by the pickup 16; 19 and 20 are an audio signal output terminal and a video signal output terminal, respectively. . Reference numeral 21 denotes a still image memory for storing image information of the still image signal portion of the output of the video signal reproducing circuit 18, and the output of this still image memory is also connected to the video signal output terminal 20. 22 is a selection means for selecting image information of a plurality of still images stored in the still image memory 21; 23 is a pig amplifier 16; Spindle motor 16° Audio signal reproducing circuit 1, video signal reproducing circuit 18. A control circuit 24 controls the still image memory 21 and the selection means 22, and a key switch group 24 operates the control circuit 23.

In such a configuration, when reproducing the moving image signal section 13 with audio of the compact disc 14 with video, the signal read by the pink-up 15 is converted into an audio signal and an image signal by the audio signal reproducing circuit 17 and the video signal reproducing circuit 21, respectively. Also, when the audio signal section 1o is played back, the still image signal section 12 without audio is played back and the image signal is stored in the still image memory 21, and when the audio signal section 10 is played back, The image signal of the still image signal section 12 is read out from the image memory 21 and outputted from the video signal output terminal 2o. Furthermore, by operating the selection means 22 using the key switch group 24, image signals of a plurality of still images stored in the still image memory 21 can be arbitrarily selected and output from the video signal output terminal 20.

As described above, the compact disc playback system with video according to the embodiment of the present invention has the function of storing the plurality of still images, and can simultaneously play back the still image portion as a video output when reproducing an audio signal. Moreover, it has a function that allows you to arbitrarily select a plurality of the still image sections and output them as video output when playing back an audio signal, allowing you to listen to any music while viewing any still image. It is.

Effects of the Invention As described above, the present invention provides a video signal portion and an audio signal portion within one disc, and the video signal portion includes a moving image signal portion with digital audio and a still image signal portion without audio. By having a compact disc with a video and a memory for storing a still image signal portion without audio, it is possible to simultaneously reproduce the still image signal portion as a video output by storing it in the memory in advance during playback of an audio signal. Moreover, since any still image can be selected and output by the selection means, it is possible to provide a compact disc with video and its playback system that has an entertaining element.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a compact disc with video of the present invention, Fig. 2 is a block diagram of the same system, Fig. 3 is a plan view showing a conventional compact disc with video, and Fig. 4 is a plan view showing a compact disc with video of the present invention.
Figures a, b, and c are a plan view, a sectional view, and an enlarged view of essential parts of a compact disc that is a digital audio disc. 1o... Audio signal section, 11...
Video signal section, 12...still image signal section without audio, 13...video signal section with audio, 21...
. . . still image memory, 22 . . . selection means. , Name of agent Patent attorney Toshio Nakao and 1 other person No. 4
figure

Claims (3)

[Claims] (1) A video characterized in that a single disc includes a video signal portion and an audio signal portion, and the video signal portion includes a moving image signal portion with digital audio and a still image signal portion without audio. Compact disc with. (2) A compact disc playback system with video, comprising a memory for storing a still picture signal section without audio, and simultaneously playing back image information of the still picture signal section as a video output when an audio signal is played back. (3) a memory for storing a still image signal portion without sound; a selection means for arbitrarily selecting image information of the plurality of stored still image signal portions; and image information selected by the selection means during audio signal playback. A compact disc playback system with video, which is characterized by playing back as a video output.