JP2001176249A - Display switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the power consumption of the conventional television receiver having a reproducing function for video CD, etc., is increased by leaving the receiver as it is until AV switching returns to a reproducing device by keeping a disk in a standby state while the disk is rotated by outputting a temporary stopping instruction to the reproducing device at the time of switching AV signals. SOLUTION: The display switching device is constituted in such a way that, when a switching request is made to an AV SW 3 from an operating key inputting means 9, a control section 8 discriminates the request and communicates the content of the request to a disk control section 12. The section 12 writes the then reproducing position in a reproducing position storing resister 13 and, when a reproducing request is made to an optical disk reproducing device 11a, the switching device reads out the reproducing position from the register 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video device having a digital video disc reproducing function and a function of switching a plurality of video / audio inputs.

[0002]

2. Description of the Related Art FIG. 9 relates to a conventional television receiver with a built-in reproducing apparatus. In FIG. 9, 1 is a TV input,
2 is a video input, 3 is an AVSW which is an AV input changeover switch, 4 is an RGB processor, 5 is a display, 6 is an audio controller, 7 is a speaker, 8 is a control unit, and 9 is an operation key. The input unit 10
It is a video CD playback device.

The operation will be described below with reference to FIG. FIG.
Is a television receiver in which a video CD playback device is incorporated. TV input 1 and video input 2 are input to AVSW3. The control unit 8
The video signal and the audio signal are supplied to the RGB processor 4 and the audio controller by switching the input of the AVSW 3 according to the input of the operation key. The RGB processor 4 converts a video signal from the AVSW 3 into an RGB signal, drives the display 5, and performs screen display. Similarly, the audio controller 6 controls an audio signal from the AVSW 3 and supplies the audio signal to the speaker 7 to output audio. Video CD playback device 10 from user through operation key input unit 9
Is selected, the control unit 8 sets the video CD player 1
0 is controlled at the same time as AVSW3 is
Switch to the D playback device 10 side. When the user wants to switch the signal to the TV input and watch the broadcast content during the playback of the video CD, when the user performs an operation via the operation key input unit 9, the control unit 8 sends a pause signal to the video CD playback device 10. And switch AVSW3 to TV input 1. After that, the user returns the AVSW to the original video CD player 10.
When the switching operation is performed, the control unit 8 switches from the TV input 1 to the video input 2 in a toggle manner, and further switches to the video CD playback device 10, and at the same time, switches the video CD playback device 1
By sending a signal to release the pause to 0, AVS
The reproduction is restarted from the position where W is switched. Or,
Even when AVSW3 is switched, video CD player 1
There may be a case where the reproduction is continued without outputting a pause signal for 0.

[0004]

The above-mentioned prior art is disclosed in Japanese Patent Application No. 6-30003 (Japanese Patent Application No. 7-240882).
Publication), a television receiver with a built-in reproducing device. However, with the configuration as in the above-described conventional example, the video CD continues to rotate during the pause, and the laser unit for reading CD data in the video CD playback device also continues to operate. It is not preferable from the viewpoint of energy saving. Moreover, recently, digital video discs using the compression method of MPEG2 which have higher image quality than the conventional video CDs using MPEG1 have appeared, and the data is rotated at a higher speed to read data. It is becoming less and more favorable from the viewpoint of energy saving. In addition, there is a problem that if the user switches AV and leaves the video CD untouched, the video CD will be left uncontrolled.

[0005]

In order to solve the above problems, the present invention has the following means.

[0006] Switching means for various AV (audio / video) signals, key operation input means for converting a user operation into a signal, first control means for determining an input from the key operation input means described above. Disc data reading means as means for reproducing an optical disc represented by a digital video disc such as a DVD, AV decoder means for converting data read from the disc data reading means into an AV signal, disc data reading means, and There is provided second control means for controlling the AV decoder means, and a reproduction position storage means associated with the second control means.

[0007] Further, according to the present invention, there is provided a screen saver output means for displaying a still image.

[0008] In a third aspect of the present invention, there is provided means for reading and storing whether the disk configuration is a single sequential configuration or a multi-sequential configuration depending on the data structure.

Further, the present invention has means for controlling a power supply to a means for reproducing an optical disk such as a digital video disk such as a DVD.

Further, there is provided a means for controlling a power supply to a means for reproducing an optical disk such as a digital video disk such as a DVD.

[0011]

A display switching device according to a first aspect of the present invention is a display switching device for switching various AV (audio / video) signals,
Key operation input means for converting a user's operation into a signal First control means for determining an input from the key operation input means For reproducing an optical disk represented by a digital video disk such as a DVD. Data reading means, AV decoder means for converting data read from the disk data reading means to an AV signal, second control means for controlling the disk data reading means and AV decoder means, The first control means detects when the user has switched the AV input by the key operation input means at the time of reproducing the disc, and the first control means comprises:
The AV signal switching means is switched, and a pause signal is transmitted to the second control means. The second control means stores the reproduction position at the time when the pause signal is received in the reproduction position storage means. When the user again operates the key operation input unit to request input from the disk again, the first control unit immediately instructs the second control unit to release the pause, and stops the disk data reading unit. The AV signal switching means is switched to the disk side, and the second control unit reads the stored content from the reproduction position storage means and immediately resumes reproduction.

According to a second aspect of the present invention, there is provided a display switching apparatus having screen saver output means for displaying a still image, and requesting a temporary hold (RESUME) to a key operation input means by a user during disc reproduction. Is performed, the control unit 1 immediately detects the content,
The content is transmitted to the second control unit, and when the temporary holding request is issued, the second control unit stores the current reproduction position in the reproduction position storage unit, stops the disk data reading unit, and again When there is a reproduction request from the user using the key operation input means, the content is detected by the first control unit, and a reproduction request is made to the second control unit. It is characterized in that reproduction can be started from that position immediately after reading the stored contents.

According to a third aspect of the present invention, there is provided a display switching device which has means for reading and storing a single sequential configuration or a multi-sequential configuration according to a data structure of the optical disk. When the AV input switching is requested in response to the operation of the user using the operation key input means, the reproduction position described in claim 1 is stored, and the reproduction can be performed from that position again, and a multi-sequential disc is detected. In this case, the disc can be reproduced as it is even when AV input switching is requested in accordance with the operation of the operation key input means by the user.

A display switching device according to a fourth aspect of the present invention has, in addition to the first aspect, means for controlling a power supply to a means for reproducing an optical disk represented by a digital video disk such as a DVD. The first control means detects when the user has switched the AV input by the key operation input means during reproduction of the disc, and the first control means
The AV signal switching means is switched, and a pause signal is transmitted to the second control means. The second control means stores the reproduction position at the time when the pause signal is received in the reproduction position storage means. At the same time, the completion of the storage operation is transmitted to the first control unit, and when the first control unit confirms that, the power supply to the means for controlling the power supply is stopped, and the key operation input means of the user is again input. As soon as the disc display is requested again by switching the AV input, the first control unit confirms the contents,
Immediately, the power supply is turned on for the means for controlling the power supply, and when the second control unit operates, the second control unit
After confirming that valid data has been written to the reproduction position storage means, the disk data is read from the reproduction position and the reproduction is started.

According to a fifth aspect of the present invention, in addition to the first aspect, the display switching device has a means for controlling power supplied to a means for reproducing an optical disk represented by a digital video disk such as a DVD, and a time. A timer means for counting, when the user switches the AV input by the key operation input means during reproduction of the disc, the first control means detects the change, and the first control means switches the AV signal. Means, a pause signal is transmitted to the second control means, and the second control means stores the reproduction position at the time when the pause signal is received in the reproduction position storage means, Is stopped, and at that time, the timer starts measuring an arbitrary time, and when the arbitrary time has elapsed, the first control unit immediately returns to the means for reproducing the optical disk. And, characterized by being adapted to stop the power supply.

According to a sixth aspect of the present invention, there is provided a display switching device according to the first aspect, wherein a screen saver output means for displaying a still image and a data structure of an optical disk read and store a single sequential configuration or a multi-sequential configuration. Means for controlling power supplied to a means for reproducing an optical disc represented by a digital video disc such as a DVD, and a timer means for counting time. When the holding request is made, the first control means determines the content thereof, makes a sequential determination request to the second control means, and the second control means sets the content by the means for storing the sequential data. Is read, the first control means is returned, and if it is multi-sequential, the first control means The second control means stops the disk data reading means, activates the screen saver output means, outputs the signal to the AV signal switching means, and starts the timer means if it is single sequential. At the same time, a temporary holding request is made to the second control means. The second control means writes the current reproduction position to the reproduction position storage means, stops the disk data reading means, and inputs a key operation by an arbitrary time. When a request for reproduction processing is made to the optical disk reproducing means, the first control means immediately discriminates the request and requests the second control means for reproduction, and the second control means stores a reproduction position storage. Means for reading the playback position from the means, instructing the disk data reading means to start playing the contents more, and the timer means for arbitrarily time lapse. There the first control means when measured, after confirming the stop of the optical disc reproducing means and stopping the unit power.

Hereinafter, an embodiment of the display switching device of the present invention will be described based on the form of each child shown in FIGS.
It should be noted that the same reference numerals are given to the same person who performs the same operation as in FIG.

(Embodiment 1) FIG. 1 shows Embodiment 1 of the present invention. In FIG. 1, reference numeral 8a denotes a control unit for performing various control processes; 11a, an optical disk reproducing device; 12, a disk control unit; 13, a reproduction position storage register for storing a reproduction position when reproducing an optical disk; Is
The AV decoder 30 is a disk data reading unit.
A detailed block diagram of the AV decoder 20 is shown in FIG. 21
Is a 16Mb memory used for data reproduction, SDR
AM and 22 are video decoders for decoding MPEG data and MP @ ML, and 23 are further various audio signals AC3,
An audio decoder that decodes the MPEG and linear PCM 24 converts the signal from the video decoder 22 into an NTSC signal.
The NTSC decoder 25 for converting a signal into a signal, a DAC for converting a digital signal from the NTSC encoder into an analog signal, and the DAC 26 for converting a digital signal from the audio decoder 23 into an analog signal. FIG. 3 shows a detailed block diagram of the disk data reading unit 30. Three
1 is a spindle motor for driving the disk, 32 is a motor driver for driving the spindle motor, 33 is an optical pickup for reading data from the optical disk, and 34 is a head for amplifying a signal from the optical pickup. An amplifier 35 is a signal processing unit for converting a signal from the head amplifier into a digital signal, a reference numeral 36 is a disk servo control unit for controlling rotation of the disk based on a signal read from the head amplifier 34, and a reference numeral 37 is a reference numeral 37. , Scrambled signal processing unit 35
This is a scrambler for descrambling the signal from. Hereinafter, description will be given based on FIG. When the display / playback of the AV signal from the optical disk playback device 11a is requested by the operation key input unit 9, the control unit 8a switches the AVSW 3 to the TV input 1 or the video input 2 based on the request.
To the signal of the optical disk reproducing device 11a. At the same time, the control unit 8a issues a reproduction request to the disk control unit 12. The disk control unit 12 performs reading control on the disk data reading unit 30. The disk data reading unit 30 operates the motor driver to rotate the spindle motor 31. Further, the reading unit inside the optical pickup 33 is moved to an appropriate position, and data is read as an optical signal. The read data is amplified by the head amplifier 34 and is amplified by the signal processing unit 35 and the disk servo control unit 3.
6. The disk servo controller 36 controls the motor driver 32 to properly control the rotation of the spindle motor 31 based on the read signal. Further, the signal processing unit 35 performs a process for digitizing the called signal and supplies the signal to the descrambler 37. The descrambler 37 decodes the scramble of the transmitted signal, converts it into a format that can be easily processed, and supplies the converted signal to the AV decoder 20. The digital data supplied to the AV decoder 20 is decoded into video data and audio data using the SDRAM 21 by the MPEG2MP @ ML video decoder 22. The AC3 / MPEG / linear PCM audio decoder 23 further decodes the audio data and outputs it to the DAC 26 as digital audio data, which converts the audio data into an analog audio signal. The video data from the MPEG2MP @ ML video decoder 22 is converted to a digital format NTS by an NTSC encoder.
And converted into a video signal by the DAC 25. These video signals are converted to RGB signals by the RGB processor 4 via the AVSW 3 and displayed on a display 5 such as a CRT. Similarly, the audio signal is AVSW3
The audio and the tone are controlled by the audio controller 6 via the. Next, when the user wants to watch TV news, etc., the AVSW3
Is requested by the optical disc reproducing device 11a to switch to the TV input 1, the control unit 8a determines the request and determines the AVS.
Switching W3 to TV input 1 and disk control unit 1
2 is issued a hold request (RESUME). Upon receiving this request, the disk control unit 12 writes the current reproduction position data in the reproduction position storage register 13 and stops the operation of the disk data reading unit.

(Embodiment 2) FIG. 4 shows Embodiment 2 of the present invention. Note that components having the same functions as those in FIGS. 9, 1, 2, and 3 showing the conventional example are denoted by the same reference numerals. Also, those having the same numbers have already been described for their functions, and therefore the description thereof will be omitted. Reference numeral 11b denotes an optical disk reproducing device, and reference numeral 14 denotes a screen saver for displaying an image indicating that the disk data reading unit of the optical disk reproducing device 11b is stopped when the disk data reading unit is stopped. Optical disc playback device 11b
If a temporary hold (RESUME) is requested from the operation key input unit 9 while the optical disk signal is being read out, the control unit 8a determines the content and determines the disk control unit 12.
Request for temporary storage. The disk control unit 12
Immediately storing the current playback position in the playback position storage register 13 and simultaneously performing a stop process on the disk data reading unit 30, operating the screen saver 14, supplying a screen saver signal to the AV decoder 20, and receiving a signal from the disk data control unit 30. The video signal is output from the AV decoder 20 to the AVSW 3 instead of the video signal. Operation key input section 9
When a reproduction request is issued again, the control unit 8 immediately determines the content and supplies the discrimination result to the disc control unit 12. The disk control unit 12 stops the operation from the screen saver 14, reads the contents of the reproduction position storage register 13, and reproduces the contents from the position.
Operate 0. Data from the disk data reading unit 30 is reproduced as described in the first embodiment.

(Embodiment 3) FIG. 5 shows Embodiment 3 of the present invention.

It is to be noted that the same reference numerals are given to those having the same functions as those shown in FIG. 9 showing the conventional example and those already shown in FIGS. 1, 2, 3 and 4. Also, those having the same numbers have already been described for their functions, and therefore the description thereof will be omitted. The operation of one embodiment of the present invention will be described below. 11
c is an optical disk reproducing device, and 15 is a sequence register that stores the data structure of the optical disk, single sequential or multi-sequential. DVD video discs, which are one type of video discs, are classified into single-sequential type discs and multi-sequential type discs according to the manufacturer's intention. Generally, movies and the like have a single-sequential disk structure, while special-purpose demo disks and the like have a multi-sequential disk structure. Generally, a disk with a single sequential configuration is
The playback position at the time of the temporary holding (RESUME) can be clarified, but with a multi-sequential disc, the playback position at the time of the temporary holding process cannot be clarified, and the playback from an unexpected position will be performed at the next playback. Inconvenience may occur. Therefore, when the user makes a temporary holding request using the operation key input unit 9, the control unit 8
It requests the disk control unit 12 for the contents of the sequential configuration of the currently reproduced disk. The disc control unit 12 determines the identity of the disc currently being reproduced at the time of the initial reading by the disc data reading unit 30, writes the sequential configuration in the sequence register 15, and returns the contents to the control unit 8a. . The control unit 8a determines the content, and issues a temporary holding command as in the first embodiment if the configuration is a single sequential configuration.
On the other hand, the disk control unit 12 writes the current reproduction position into the reproduction position storage register 13 and stops the disk data reading unit 30 as described in the first embodiment. If the control unit 8a has a multi-sequential configuration, the control unit 8a does not issue a temporary holding instruction to the disk control unit 12. If the temporary hold command involves AVSW3 switching, the control unit 8a performs only the AVSW3 switching operation.

(Embodiment 4) FIG. 6 shows Embodiment 4 of the present invention. It is to be noted that components having the same functions as those shown in FIG. 9 showing the conventional example and those already shown in FIGS. 1, 2, 3, 4, and 5 are denoted by the same reference numerals. Also, those having the same numbers have already been described for their functions, and therefore the description thereof will be omitted. The operation of one embodiment of the present invention will be described below. Reference numeral 16 denotes a unit power supply for the optical disk reproducing device 11a that can be controlled by the control unit 8a. When a temporary holding request accompanied by switching of the AVSW 3 comes from the operation key input unit 9, the control unit 8 a immediately determines the content and makes a temporary holding request to the disk control unit 12. Disk control unit 1
2 determines the current playback position and writes the content into the playback position storage register 13. Further, a stop request is made to the disk data reading unit 30. Disk control unit 12
Sends a completion report to the control unit 8a after the data backup. After detecting the contents, the control unit 8a stops the unit power supply unit 16. When the playback request of the optical disk playback device 11a is made again from the operation key input unit 9, the control unit 8a immediately determines the content and operates the unit power supply unit 16. When the unit power supply 16 rises, the disk control unit 12 starts the operation, and first determines the written contents of the reproduction position storage register 13. If the content is valid, the content is read and a command is issued to the disk data reading unit 30 to start reproduction from this position. The controller 8a immediately switches the AVSW 3 to the optical disk reproducing device 11a.

(Fifth Embodiment) FIG. 7 shows a fifth embodiment of the present invention. It is to be noted that the same reference numerals are given to components having the same functions as those in FIG. 9 showing the conventional example and those already shown in FIGS. Also, those having the same numbers have already been described for their functions, and therefore the description thereof will be omitted. The operation of one embodiment of the present invention will be described below. 17 is AVS
This is a timer for measuring an arbitrary time from the time when the switching request for W3 is made. When a request for switching to the TV input 1 or the video input 2 is made from the optical disk reproducing device 11a by the operation key input unit 9, the control unit 8a
The operation of the timer 17 is immediately started. Further AV
A switching process is performed on SW3. In addition, a temporary holding command is issued to the disk controller 12. Disk control unit 1
2 is a reproduction position storage register 13 which stores the current reproduction position.
And the disk data reading unit 30 is stopped. Thereafter, if the switching request is not made to the operation key input unit 9 even after the elapse of an arbitrary time, the control unit 8a detects the interrupt signal from the timer 17, supplies a stop process to the disk control unit 12, and outputs a completion signal. As soon as the unit power supply 16 is received, the unit power supply 16 is stopped.

(Embodiment 6) FIG. 8 shows Embodiment 6 of the present invention. The sixth embodiment incorporates all of the first to fifth embodiments. 11d
Is an optical disk reproducing device. When a temporary holding request is made from the operation key input unit 9, the control unit 8 a determines the content and makes a sequential determination request to the disk control unit 12. The disk controller 12 returns the contents of the sequence register 15 to the controller 8a. If it is multi-sequential, the control unit 8a
Request to stop. Accordingly, the disk control unit 12
Stops the disk data reading unit 30 and
The screen saver 14 is operated to output a screen saver signal to the AVSW 3 via the AV decoder 20. If the contents of the sequence register 15 are single sequential, the timer 17 is started and a temporary holding request is made to the disk control unit 12. The disk control unit 12 writes the current reproduction position into the reproduction position storage register 13 and stops the disk data reading unit 30. If a request is made to the key operation input unit 9 for a reproduction process to the optical disk reproducing device 11d before the elapse of an arbitrary time, the control unit 8 immediately discriminates the request and requests the disk control unit 12. The disk control unit 12 reads the reproduction position from the reproduction position storage register 13 and instructs the disk data reading unit 30 to start reproducing the contents. After the elapse of an arbitrary time, an interrupt request is sent from the timer 17 to the control unit 8a, and the control unit 8a
Stops the unit power supply 16 after confirming that the backup of the optical disk reproducing device 11d is completed.

[0025]

According to the present invention, the following effects can be obtained. According to the first aspect of the invention, when the display input is switched during the reproduction of the optical disk, the rotation can be stopped by storing the reproduction position of the optical disk reproduction device, and the reproduction position is immediately set when the reproduction request is made again. Can be specified and reproduced, and there is no need to wait while the disc is being rotated, and reproduction standby with an extremely energy-saving effect can be performed. In addition, it is possible to obtain an extremely excellent effect that noise caused by the rotation of the disk and noise generation can be suppressed.

According to the second aspect of the invention, by displaying the screen saver screen without rotating the optical disk during the temporary holding request, an extremely excellent energy saving effect can be obtained. In addition, it is possible to obtain an extremely excellent effect that noise caused by the rotation of the disk and noise generation can be suppressed.

According to the third aspect of the present invention, it is possible to cope with the data configuration of the optical disk by detecting the sequential of the disk and performing the temporary holding process, and also obtain an extremely excellent energy saving effect. In addition, it is possible to obtain an extremely excellent effect that noise caused by the rotation of the disk and noise generation can be suppressed.

According to the fourth aspect of the present invention, it is possible to obtain a more excellent energy saving effect than by stopping the rotation of the optical disk by controlling the unit power supply.

According to the fifth aspect of the present invention, an extremely easy-to-use energy saving effect can be obtained by changing the stoppage of the rotation from the stoppage of the circuit to the stoppage of the circuit for an arbitrary time by the timer measurement.

According to the sixth aspect of the present invention, a more effective energy saving effect can be obtained by selectively using the excellent effects of the first to fifth aspects.

[Brief description of the drawings]

FIG. 1 is a block diagram of a display device in Embodiment 1.

FIG. 2 is a detailed block diagram of an AV decoder according to the first embodiment.

FIG. 3 is a detailed block diagram of a disk data reading diagram according to the first embodiment.

FIG. 4 is a block diagram of a display device in Embodiment 2.

FIG. 5 is a block diagram of a display device in Embodiment 3;

FIG. 6 is a block diagram of a display device in Embodiment 4.

FIG. 7 is a block diagram of a display device in Embodiment 5.

FIG. 8 is a block diagram of a display device in Embodiment 6.

FIG. 9 is a block diagram of a conventional display device.

[Explanation of symbols]

REFERENCE SIGNS LIST 11 digital video disc playback section 12 disc control section 13 playback position storage register 14 screen saver 15 sequence register 16 unit power supply section 20 AV decoder 21 SDRAM 22 MPEG2 MP @ ML video decoder 23 AC3 / MPEG / linear PCM audio decoder 24 NTSC encoder 25 DAC (for video signal) 26 DAC (for audio signal) 30 Disk data reading unit 31 Spindle motor 32 Motor driver 33 Optical pickup 34 Head amplifier 35 Signal processing unit 36 Disk servo control 37 Descramble

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 27/10 A

Claims (6)

[Claims] 1. A means for switching various AV (audio / video) signals, a key operation input means for converting a user operation into a signal, a first operation means for judging an input from the key operation input means. Control means Disc data reading means as means for reproducing an optical disc represented by a digital video disc such as a DVD, and AV for converting data read from the disc data reading means into an AV signal.
A second control unit for controlling the decoder unit, the disk data reading unit and the AV decoder unit; and a reproduction position storage unit associated with the second control unit. The first control means detects when the switching is performed, and the first control means switches the AV signal switching means, transmits a pause signal to the second control means, and performs the second control. The means stores the playback position at the time when the pause signal was received in the playback position storage means and stops the disk data reading means, and a user's operation on the key operation input means again requests the input on the disk side. If
The first control unit immediately instructs the second control unit to release the pause, and switches the AV signal switching unit to the disk side. The second control unit reads the stored content from the reproduction position storage unit and immediately resumes reproduction. A display switching device, characterized in that: And a screen saver output means for displaying a still image. When a user makes a temporary hold (RESUME) request to the key operation input means during reproduction of the disc, the control unit 1 immediately outputs the contents. Detect
The content is transmitted to the second control unit, and when the temporary holding request is issued, the second control unit stores the current reproduction position in the reproduction position storage unit, stops the disk data reading unit, and again When there is a reproduction request from the user using the key operation input means, the content is detected by the first control unit, and a reproduction request is made to the second control unit. 2. The display switching device according to claim 1, wherein reproduction can be started immediately from the stored content. 3. A means for reading and storing a single-sequential configuration or a multi-sequential configuration according to a data structure of an optical disk. When the switching is requested, the playback position described in claim 1 is stored, and the playback can be performed from that position again. When a multi-sequential disc is detected, the playback is performed according to the operation by the user's operation key input means. 2. The display switching device according to claim 1, wherein the disc can be reproduced as it is even when an AV input switching is requested. 4. A device for controlling power supplied to a device for reproducing an optical disk represented by a digital video disk such as a DVD. The first control means detects when the switching is performed, and the first control means switches the AV signal switching means and transmits a pause signal to the second control means. Stores the playback position at the time of the pause signal in the playback position storage means and sends a storage operation completion to the first control unit. When the first control unit confirms this, the power supply is turned on immediately. The power supply to the control means is stopped, the AV input is switched again by the user's key operation input means, and immediately when the disk display is requested again, The first control unit confirms the content, immediately turns on the power to the means for controlling the power supply, and when the second control unit operates, the second control unit stores in the reproduction position storage means. 2. The display switching device according to claim 1, wherein, after confirming that valid data has been written, the disk data is read from the reproduction position and reproduction is started. 5. It has means for controlling power supply to a means for reproducing an optical disk represented by a digital video disk such as a DVD, and timer means for counting time. The first control means detects when the AV input is switched by the key operation input means, and the first control means switches the AV signal switching means and sends a pause signal to the second control means. And the second control means stores the reproduction position at the time of the pause signal in the reproduction position storage means and stops the disk data reading means,
At that time, the timer starts measuring an arbitrary time, and when the arbitrary time has elapsed, the first control unit immediately stops the power supply to the means for reproducing the optical disk. The display switching device according to claim 1. 6. A screen saver output unit for displaying a still image, a unit for reading and storing a single sequential configuration or a multi-sequential configuration depending on a data structure of an optical disk, a digital video disk such as a DVD, etc. Means for controlling the power supplied to the means for reproducing the optical disk, timer means for counting time, when a temporary holding request is made from the key operation input means, the first control means: The contents are discriminated, a sequential discrimination request is made to the second control means, and the second control means reads the contents from the means for storing the sequential data, returns the first control means, and returns the multi-sequential data. For example, the first control means issues a stop request to the second control means,
Control means stops the disk data reading means, operates the screen saver output means,
The signal is output to the signal switching means. If the signal is single sequential, the timer means is started and a temporary holding request is issued to the second control means.
If the current playback position is written to the playback position storage means, the disk data reading means is stopped, and a playback processing request to the optical disk playback means is made to the key operation input means by a predetermined time, the first control is performed. The means immediately discriminates the request and requests the second control means to reproduce the data. The second control means reads the reproduction position from the reproduction position storage means and causes the disk data reading means to start reproducing the contents. 2. The display switching device according to claim 1, wherein the first control means stops the unit power supply after confirming the stop of the optical disk reproducing means when a command is issued and the elapsed time is measured by the timer means. .