JPS63103473A - High density recording disk reproducing device - Google Patents

Abstract

PURPOSE:To project a still picture from a monitor television by storing a video signal which has been reproduced from a video sound signal recording area, as still picture information, in a still picture memory, and outputting it from a video signal output terminal at the time of reproducing the sound signal recording area. CONSTITUTION:When a video signal recording area 13 has been reproduced, an arbitrary image by address information of a video signal, or an image reproduced at that time is designated by a key switch group 9, a frequency-modulated video signal which has been recorded therein is reproduced to still picture information by a video signal reproducing circuit 5, and stored in a still picture memory 14. On the other hand, when a sound signal recording area 11 has been reproduced, the still picture information which has been stored in advance in the still picture memory 14 is outputted to a video signal output terminal 7 by a control circuit 8. In this way, even in case of reproducing the sound signal recording area 11, an image is projected on a monitor television.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-density recording disk reproducing apparatus.

BACKGROUND OF THE INVENTION In recent years, high-density recording disc playback devices have become popular as compact disc players, laser vision players, and the like. In particular, high-density recording disk reproducing devices for recording and reproducing video and audio signals are being used in various applications as semiconductor memories become cheaper.

An example of the above-mentioned conventional high-density recording disk reproducing apparatus will be described below with reference to the drawings.

FIG. 3 is a block diagram showing the configuration of a conventional high-density recording disk reproducing apparatus. In the figure, 1 is a high-density recording disk, 2
3 is a pickup, 3 is a spindle motor 4 is an audio signal reproducing circuit, 5 is a video signal reproducing circuit, 6 is an audio signal output terminal, 7 is a video signal output terminal, 8 is a control circuit, and 9 is a group of key switches.

FIG. 2 shows an example of the high-density recording disk 1 used in the reproducing apparatus shown in FIG. In the figure, 1o is a first index information recording area in which index information of an audio signal recording area, which will be described later, is recorded, 2 is an audio signal recording area, in which audio signals and address information are recorded, and 3 is an index of a video and audio signal recording area, which will be described later. A second index information area in which information is recorded, and reference numeral 4 is a video and audio recording area in which video signals, audio signals, and address signals are recorded. These areas are sequentially recorded from the inner circumference to the outer circumference of the recording disk.

The operation of the conventional high-density recording disk reproducing apparatus configured as described above will be explained below.

In the high-density recording disk shown in this example, audio signals are recorded as digital signals in an audio signal recording area 2 on the inner periphery, and digital audio signals and video signals are recorded in a video/audio signal area 4 on the outer periphery. . Originally, when recorded on a high-density recording disk, the video signal is frequency modulated compared to the digital audio signal recorded with PCM, so the signal frequency is higher and the band is wider, so it is necessary to reproduce the signal at a higher density. It is necessary to rotate the recording disk at high speed and convert the recorded signal into an electrical signal using a pickup. However, there are limits to the torque and rotational speed of the spindle motor, making it difficult to reproduce data at a high linear velocity on the inner circumference of a high-density recording disk. Therefore, in the high-density recording disk shown in this example, only the PCM digital audio signal is recorded on the inner circumference. In addition, by utilizing the fact that the frequency band of the PCM digital audio signal and the frequency band of the frequency-modulated video signal are different, the PCM digital audio signal is
A digital audio signal and a frequency-modulated video signal are frequency-multiplexed and recorded in the audio signal area 2 at a low linear velocity and in the video/audio signal area 4 at a high linear velocity.

The operation of the conventional high-density recording disk reproducing apparatus constructed as described above will be explained below.

The user who uses the high-density recording disk reproducing device presses the key switch group 9 to
or the video/audio signal recording area 4. Based on the command, the control circuit 8 controls the pickup 2.
is moved, and at the same time a rotation command is given to the spindle motor 3 to perform a search.

The search is performed in the audio signal recording area 11 in the first index information recording area 1o and in the video/audio signal recording area 13 in the second index information recording area 12. After the search is completed, reproduction is performed. At this time, among the information on the high-density recording disk 1 that has been converted into a recording signal by the pickup 2, the PCM digital audio signal is reproduced by the audio reproduction circuit 4, and the frequency-modulated video signal is reproduced as a video signal. The signal reproducing circuit 6 reproduces the signal into a video signal. When the audio signal recording area 11 is reproduced, no video signal is recorded, so the reproduction signal appears only at the audio signal output terminal 6, and no reproduction signal appears at the video signal output terminal 7. When the video/audio recording area 13 is being played back, both audio and video signals are recorded, so the audio signal output terminal 6. A playback signal appears on both the video signal and terminal terminals.

Problems to be Solved by the Invention In the above configuration, since no video signal is recorded when the audio signal recording area is played back, the playback signal appears only at the audio signal output terminal 6, and the video signal is not recorded. No playback signal appears on the monitor terminal, and when using this playback device with a monitor TV and audio amplifier connected, raster appears on the monitor TV or nothing is displayed when playing back the audio signal recording area. However, the drawback was that the monitor TV had to be turned off every time.

Means for Solving the Problems In order to solve the above problems, the high-density recording disc playback device of the present invention stores the video signal reproduced in advance from the video and audio signal recording area in a still image memory, and stores the video signal reproduced from the audio signal recording area in advance. The apparatus is configured to output still surface information stored in a still image memory to a video signal output terminal when reproducing the image.

According to the above-described configuration, the present invention stores any video signal in the still image memory in advance when reproducing the video and audio signal storage area, and when reproducing the audio signal storage area, the still image stored in the memory is stored in the still image memory. By outputting information from the video signal output terminal, a monitor TV and audio amplifier can be used as a playback device, and the video signal is projected onto the monitor TV even when playing back the audio signal recording area. be.

In fact, in the following five examples, a high-density recording disk reproducing apparatus according to an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 shows the configuration of a high-density recording disk reproducing apparatus according to an embodiment of the present invention, and components having the same functions as those of the conventional example are given the same reference numerals and their explanation will be omitted. In the figure, 14 is connected to the video signal reproducing circuit 6 and the control circuit 1
still image memory controlled by 6; 15 receives commands from key switch group 9; controls movement of pickup 2;
This is a control circuit that controls the rotation of the spindle motor 3, the playback control of the audio signal playback circuit 4, the playback control of the video signal playback circuit 5, and the still image memory 14 as described above. The rest of the structure is the same as that shown in FIG.

The operation of the high-density recording disk reproducing apparatus according to one embodiment of the present invention constructed as described above will be described below.

A user who connects a monitor television and an audio amplifier to the high-density recording disc playback apparatus of this embodiment and uses the key switch group 9 when playing back the high-density recording disc shown in FIG.
This command instructs whether to reproduce the audio signal recording area 11 or the video/audio signal area 13 of the high-density recording disk 1. Based on the command, the control circuit 8 moves the pickup 2, and at the same time gives a rotation command to the spindle motor 3,
Alternatively, a search is performed using the information obtained from the second index information recording area and the address information, and after the search is completed, the audio signal or the audio signal and the video signal are reproduced. High-density recording disk 1 converted into electrical signals by pickup 2
Of the information, the PCM digital audio signal is reproduced into an audio signal by the audio signal reproduction circuit 4, and the frequency-modulated video signal is reproduced into a video signal by the video signal reproduction circuit 5.O When the video signal recording area 13 is reproduced. Then, the user uses the key switch group 9 to specify an arbitrary image based on the address information of the video signal, or the image currently being played back, and converts the frequency-modulated video signal recorded therein into a video signal. The reproduction circuit 6 reproduces the still image information and stores it in the still image memory 14.

On the other hand, when the audio signal recording area 11 is played back, since no video signal is recorded in the audio signal recording area 11,
Since the playback signal appears only at the audio signal output terminal 6 and no playback signal appears at the video signal output terminal 7, the control circuit 8 causes the still image information stored in the still image memory 14 in advance to be output to the video signal output terminal. Output to 7. Therefore, even when the audio signal recording area 11 is reproduced, an image will be displayed on the monitor television.

When reproducing the video/audio signal area 13, since both audio and video signals are recorded, the audio signal output terminal 6. A playback signal appears on both video signal output terminals 7.0 As described above, in one embodiment of the present invention, when playing back a video/audio signal recording area, an arbitrary video signal is sent to a still picture memory in a still picture memory using address information. By storing the still image information stored in the still image memory as information and outputting the video signal from the video signal output terminal when playing back the audio signal recording area, the high-density recording disc playback device can be connected to a monitor TV and an audio amplifier. When connected and used, it is possible to display images on a monitor TV even when playing back the audio signal recording area.

Furthermore, if the user does not play back the video and audio recording area before playing back the audio signal recording area, the specified image signal in the video and audio recording area is forcibly stored in the still image memory. It may also be output together with the audio signal.

Effects of the Invention As described above, according to the high-density recording disk reproducing apparatus of the present invention, there is an audio signal recording area in which an audio signal and address information are recorded, and a video and audio signal in which a video signal, an audio signal, and address information are recorded. When reproducing a high-density recording disc comprising a recording area, the video signal reproduced from the video/audio signal recording area is stored in the still image memory as still image information, and when reproducing the audio signal recording area, the video signal is stored in the still image memory. By outputting the memorized still image information from the video signal output terminal,
When using a high-density g recording disc playback device connected to a monitor TV and an audio amplifier, there is no need to turn off the monitor TV as in the past when playing back the audio signal recording area, and the monitor TV It becomes possible to take still images from the camera.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a high-density recording disk reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a format of a high-density recording disk used in a high-density recording disk reproducing apparatus according to an embodiment of the present invention. FIG. 3 is a block diagram showing the configuration of a conventional high-density recording disk reproducing apparatus. 1...High-density recording disk, 2...Pickup, 3...Spindle motor, 4...
...Audio signal reproducing circuit, 5...Video signal reproducing circuit, 6...Audio signal output terminal, 7...
Video signal output terminal, 11...Audio signal recording area, 13...Video/audio signal recording area, 14...
... Still image memory, 16... Control circuit. 1-One-hitori-mu-yabuta-kame-jiru-don 2--Pi sokuwoshifu. 3-11 speed〉de] and motor 6---Dragon ax also takes one day Preparation 7---Fukiya Monsei■''46 Figure 3 Procedural Amendment Document June 1986 11th Director-General of the Patent Office ■Indication of the case 1985 Patent Application No. 248727 2 Name of the invention High-density recording disk reproducing device 3 Person involved in the amendment Patent application
Address: 1006 Kadoma, Kadoma City, Osaka Prefecture
Name (582) Matsushita Electric Industrial Co., Ltd. Representative Akio Tanii 4 Agent 571 Address 1006 Oaza Kadoma, Kadoma City, Inuhanfu Matsushita Electric Industrial Co., Ltd. 5 Subject of amendment 6, Contents of amendment (1) Akira "Figure 1" on page 2, line 20 of the 1st book has been corrected to "Figure 3." (2) Replace “2” with “11” on page 3, line 3 and line 11.
I will correct it. (3) "3" on the 4th line of the 3rd page of the same page will be corrected to "12". , (4) Replace "4" with "13" in lines 6 and 14 of page 3 of the same tube.
I will correct it. (5) Correct "Area 2" on page 4, line 11 to "Area 11". (6) Change “Video/audio signal area 4” on page 4, line 11 to “
"Video/audio signal area 13" is corrected.

Claims (1)

[Claims] A pickup for reading out signals from a high-density recording disk comprising an audio signal recording area in which audio signals and address information are recorded and a video and audio signal recording area in which video signals, audio signals, and address information are recorded; and a pickup for reading out signals from the pickup. comprising an audio signal reproducing circuit for reproducing an audio signal, a video signal reproducing circuit for reproducing a video signal from a signal read from the pickup, and a still image memory for storing an image reproduced by the video signal reproducing circuit,
storing an arbitrary video signal read out by the pickup and the video signal reproducing circuit from the video/audio signal recording area of the high-density recording disk reproducing device in the still image memory;
A high-density recording disk reproducing apparatus characterized in that when reproducing an audio signal recording area, a video signal stored in the still image memory is outputted together with an audio signal.