JPH09121368A - Recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording and reproducing device equipped with a disk reproducing part and a magnetic recording and reproducing part having video mode switching function by the automatic image size discrimination control function of video CD and equipped with a one-action dubbing function with which reproducing signals of the voice and video in the disk reproducing part can be recorded by the magnetic recording and reproducing part only by depressing one button. SOLUTION: From an image size written in the sequence header of a video encoding bit stream outputted from an MPEG decoder 3, a microcomputer 21 automatically switches the NTSC/PAL mode of a video encoder 6, synchronizing signal generating circuit 8 and VTR part 16. When performing the dubbing of image/voice from the video CD to a video cassette type 18, the microcomputer 21 performs dubbing while turning a video CD reproducing part 1 into reproducing state and turning the VTR part 16 into recording state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video CD player capable of reproducing a video CD recorded with audio information and video information, and a video tape recorder capable of recording and reproducing audio and video using a video cassette tape. (Less than,
(Hereinafter referred to as VTR).

[0002]

2. Description of the Related Art In recent years, as a CD, a video CD on which video information is recorded in addition to audio information is on sale. Correspondingly, a conventional disc reproducing device capable of reproducing a CD and a video CD in which only audio information is recorded is also on sale.
The video CD image format is NTSC (image size 352 pixels × 240 lines, image rate 29.97).
Hz) and PAL (image size 352 pixels × 288 lines, image rate 25 Hz), and NTSC / PAL video mode switching must be performed according to the image format. When an NTSC disc is played back in PAL mode, an image with an irregular aspect ratio results in a vertically shrunk image. Conversely, when a PAL disc is played back in NTSC mode, an image with an unsatisfactory aspect ratio results in a vertically elongated image.

When a magnetic recording / reproducing apparatus capable of recording and reproducing audio and video using a disk reproducing apparatus and a video cassette tape is used on one monitor, the respective audio output and video output are used as external input terminals of a monitor television. It is necessary to connect and switch the external input of the monitor TV according to the use.

When the reproduction output of the disk reproducing device is recorded by the magnetic recording / reproducing device (dubbing), the audio output and the video output of the disk reproducing device are connected to the audio input and the video input of the magnetic recording / reproducing device to reproduce the disk. Device NTSC
It is necessary to switch the NTSC / PAL system recording image mode of the magnetic recording / reproducing device in accordance with the / PAL system reproducing image signal and press the reproduction button of the disk reproducing device and the recording button of the magnetic recording / reproducing device.

[0005]

However, in the above-mentioned conventional structure, the video mode of the disc reproducing apparatus must be changed each time in accordance with the image format of the video CD.

Further, when both the disc reproducing apparatus and the magnetic recording / reproducing apparatus are used, the monitor television requires at least two input terminals, and the input terminals of the monitor television must be switched at any time according to the external connecting device used. I have to.

Further, when dubbing video / audio recorded on a disk onto a video cassette tape, first, the audio output terminal and the video output terminal of the disk reproducing apparatus are connected to the audio input terminal and the video input terminal of the magnetic recording / reproducing apparatus. However, it is necessary to switch the recording video mode of the magnetic recording / reproducing device according to the image format of the disc, and then press the reproducing button of the disc reproducing device and the recording button of the magnetic recording / reproducing device. It had a complicated operation.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a recording / reproducing apparatus which does not involve complicated operations.

[0009]

To achieve this object, a recording / reproducing apparatus of the present invention can reproduce both audio and NTSC / PAL video from a video CD on which audio information and video information are recorded. The disc reproducing means and the image size discriminating means for discriminating the image size written in the video information of the video CD reproduced by the disc reproducing means, and the NTS of the disc reproducing means by the information of the image size discriminating means.
An object of the present invention is to provide a recording / reproducing apparatus provided with a control means for controlling the C / PAL reproduction video system, and without complicated operations.

In addition, a disk reproducing means capable of reproducing both audio and NTSC / PAL video from a video CD on which audio information and video information are recorded, and both audio and NTSC / PAL audio and video are recorded using a video cassette tape. A magnetic recording / reproducing means capable of recording / reproducing an image, an image size discriminating means for discriminating the image size written in the image information of the video CD reproduced by the disc reproducing means, and the disc reproducing means by the information of the image size discriminating means. NTSC / PAL
Video system and magnetic recording / reproducing means NTSC / PA
A recording / reproducing apparatus provided with a microcomputer comprising a control means for controlling a recording image system of L, and a third control part for controlling to record audio information and image information recorded on a video CD on a video cassette tape. It is an object of the present invention to provide a recording / reproducing apparatus that does not involve complicated operations.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION According to the invention described in claim 1, audio and N are recorded from a video CD on which audio information and video information are recorded.
Disc reproducing means capable of reproducing both TSC / PAL video and video C reproduced by the disc reproducing means
An image size discriminating means for discriminating the image size written in the video information of D and a control means for controlling the NTSC / PAL reproduction video system of the disc reproducing means by the information of the image size discriminating means. In addition, the disc playback apparatus having the playback video mode switching by the image size discrimination control function of the video CD allows the NTSC at any time.
This has the effect that it is not necessary to switch the video mode of / PAL.

According to a second aspect of the present invention, there is provided a recording / reproducing apparatus capable of reproducing a video CD on which audio information and video information are recorded, and an image size written in the video information of the reproduced video CD. Information is discriminated, and the NTSC / PAL playback video system is controlled based on the discriminated image size information. The disc playback apparatus having the playback video mode switching by the video CD image size discrimination control function allows the NTSC / PAL to be played back at any time. This has the effect that it is not necessary to switch the video mode of.

According to a third aspect of the present invention, the disc reproducing means extracts the audio information and the video information from the video CD and extracts the digital data, and the digital drive extracts the digital audio data and the digital video data from the digital data. An MPEG decoder, a random access memory for accumulating the digital data, a video digital-analog converter for converting the digital video data into analog video data, a video encoder for converting the analog video data into a video signal, and a subcarrier signal , A sync signal generating circuit for generating horizontal and vertical sync signals, and a disc reproducing apparatus having a reproducing image mode switching function according to an image size discrimination control function of a video CD can switch the NTSC / PAL image mode at any time. Without It has the effect of also good.

According to a fourth aspect of the present invention, the audio and NTSC / Video are recorded from a video CD on which audio information and video information are recorded.
Disc playback means capable of playing both PAL video images,
Audio and NTSC / PAL using video cassette tape
Magnetic recording / reproducing means capable of recording / reproducing images of both systems, image size discriminating means for discriminating the image size written in the image information of the video CD reproduced by the disc reproducing means, and information of the image size discriminating means. A recording / reproducing apparatus comprising: a control means for controlling the NTSC / PAL reproduction video system of the disk reproducing means by means of: a first control section capable of controlling the disk reproducing means; and the magnetic recording / reproducing means. A controllable second control section and one output section capable of outputting either a video signal reproduced by the disk reproducing means or a video signal reproduced by the magnetic recording / reproducing means. Yes, a disc playback device that has a playback video mode switching function based on the image size discrimination control function of the video CD can switch the NTSC / PAL video mode at any time. It has the effect that may or may not.

According to a fifth aspect of the present invention, when the first control unit controls the disc reproducing unit, the reproduction signal of the disc reproducing unit is output from the output unit, and the second control unit outputs the magnetic recording. A disc reproducing apparatus having a switching circuit for switching the reproduction signal of the magnetic recording / reproducing means to be outputted from the output portion when the reproducing means is controlled, and having a reproduction image mode switching by the image size discrimination control function of the video CD. , Anytime NTSC / PAL
This has the effect that it is not necessary to switch the video mode of.

According to a sixth aspect of the present invention, audio and NTSC / NTV / CD are recorded from a video CD on which audio information and video information are recorded.
Disc playback means capable of playing both PAL video images,
Audio and NTSC / PAL using video cassette tape
Magnetic recording / reproducing means capable of recording / reproducing images of both systems, image size discriminating means for discriminating the image size written in the image information of the video CD reproduced by the disc reproducing means, and information of the image size discriminating means. And a control means for controlling the NTSC / PAL reproduction video system of the disk reproduction means and the NTSC / PAL recording video system of the magnetic recording / reproduction means according to
It is provided with a third control unit for controlling the audio information and the video information recorded on the video CD to be recorded on the video cassette tape, and does not require a troublesome input / output connection or operation even when dubbing. Also, it has the effect of dubbing with one touch.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing the structure of a recording / reproducing apparatus of the present invention. In FIG. 1, 1 is a video CD
The reproducing unit 2 extracts information from a disc on which information such as audio and video is recorded to extract digital data C
The D drive includes an optical pickup device, a servo circuit, and a digital signal processing circuit (not shown). 3 is an MPEG decoder for extracting digital audio data and digital video data from digital data, 4 is a random access memory (hereinafter referred to as RAM) for accumulating digital data, 5 is analog video data (for example, RGB signal) from digital video data A video digital-to-analog converter (hereinafter, referred to as a video DAC) 6 for converting into a video encoder is a video encoder for converting analog video data into a video signal, and is compatible with both NTSC / PAL video signals. 7 is a video output terminal, 8 is a synchronizing signal generating circuit,
It generates subcarrier signals and horizontal and vertical sync signals. Reference numeral 9 discriminates the image size information written in the video information of the video CD reproduced by the MPEG decoder 3, and based on the image size information, the video encoder 6 and the synchronizing signal generation circuit 8 are based on the NTSC / PAL reproduced video system. It is a microcomputer to control. Reference numeral 10 denotes a key input unit for performing operations such as reproduction / stop and reproduction video mode switching.

The operation of the disc reproducing apparatus configured as described above will be described below.

First, when playing a video CD, when a video CD play button (not shown) in the key input unit 10 is pressed, the CD drive 2 extracts the information recorded on the disc under the control of the microcomputer 9. Then, the extracted information is decoded and digital data is taken out. Then, the digital data is sent to the MPEG decoder 3 and taken out as digital audio data and digital video data. The digital video data is sent to the video DAC 5 and the video encoder 6, converted into a video signal, and output from the video output terminal 7.

FIG. 2 is a schematic view of a video mode switching switch (hereinafter referred to as a video mode switching SW) in the key input section 10. When the video mode switching SW 32 is at the right end (NTSC mode) in the figure, the sync signal generation circuit 8 controls the subcarrier signal of 3.58 MHz, the horizontal sync signal of 15.734 KHz, by the control of the microcomputer 9.
A vertical synchronizing signal of 59.94 Hz is generated and sent to the video encoder 6. The video encoder 6 is in the NTSC mode under the control of the microcomputer 9 and is in the NTS mode.
A video signal of the C system is output.

When the video mode changeover switch 32 is in the center (PAL mode) in the figure, the synchronizing signal generating circuit 8 is controlled by the microcomputer 9 so that the subcarrier signal of 4.43 MHz, the horizontal synchronizing signal of 15.625 KHz, 50H
The vertical sync signal of z is generated and the signal is sent to the video encoder 6. The video encoder 6 is in the PAL mode under the control of the microcomputer 9 and outputs a PAL video signal.

When the image mode changeover switch 32 is at the left end (AUTO mode) in the figure, the microcomputer 9 causes the MPE
The NTSC / PAL image format is selected from the image size (the number of vertical lines and the number of horizontal pixels of the image) written in the sequence header in the video coded bit stream of the video CD output from the G decoder 3 shown in FIG. The NTSC / PAL mode switching of the video encoder 6 and the synchronizing signal generating circuit 8 is automatically performed according to the determined image format. From the video encoder 6, N depending on the image format recorded on the video CD.
A TSC / PAL video signal is output.

As described above, according to the present embodiment, a disc reproducing section capable of reproducing both audio and NTSC / PAL type video from a video CD, and the video information recorded on the video CD reproduced by the disc reproducing means are written. An image format of a video CD is provided by providing a microcomputer including an image size discrimination unit for discriminating a given image size and a control unit for controlling both NTSC / PAL video of the disc reproducing unit according to the information of the image size discrimination unit. By NTS at any time
It is not necessary to switch the video mode of C / PAL.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a block diagram showing the structure of the recording / reproducing apparatus according to the second embodiment of the present invention, and FIG. 5 is a perspective view showing the schematic structure of the recording / reproducing apparatus according to the present embodiment. In FIG. 4, reference numeral 1 is a video CD reproducing section, 2 is a CD drive for extracting digital data by extracting information from a disc on which information such as audio and video is recorded, an optical pickup device, a servo circuit, and a digital signal processing circuit. (Not shown). 3 is an MPEG that is extracted from the digital data as digital audio data and digital video data.
Decoder 4 is an RA for accumulating the digital data
M and 5 are video DACs that convert the digital video data into analog video data (for example, RGB signals), and 6 is a video encoder that converts the analog video data into video signals, and supports both NTSC / PAL video signals. It is possible. Reference numeral 8 denotes a sync signal generation circuit, which generates a subcarrier signal and horizontal and vertical sync signals. Reference numeral 11 is an antenna, 12 is a tuner capable of receiving a television broadcast via the antenna 11, and 13 is an external input terminal. 14, 15,
Reference numeral 19 is a changeover switch (hereinafter, referred to as changeover SW), 16 is an NTS using a video cassette tape 18.
A VTR unit that can record and reproduce both C / PAL video,
Reference numeral 17 is a video head, and 20 is an output terminal. Reference numeral 21 is a microcomputer for controlling the above system, and 22 is a key input unit.

The operation of the recording / reproducing apparatus configured as described above will be described below.

First, when playing a video CD, when the video CD playback button in the video CD operating section 22a is pressed,
Under the control of the microcomputer 21, the CD drive 2 extracts the information recorded on the disc, decodes the extracted information to extract digital data, and switches the output switching SW 19 to the side a. Then, the digital data is sent to the MPEG decoder 3 and taken out as digital audio data and digital video data. The digital video data is sent to the video DAC 5 and the video encoder 6, converted into a video signal, and output from the output terminal 20 via the output switching SW 19.

When the video mode switch SW22e in the key input section 22 is in the NTSC mode, the microcomputer 21
By the control of the
The sub-carrier signal, the horizontal sync signal of 15.734 KHz, and the vertical sync signal of 59.94 Hz are generated and sent to the video encoder 6. The video encoder 6 is in the NTSC mode under the control of the microcomputer 21.
A TSC video signal is output.

In the PAL mode, the sync signal generation circuit 8 is controlled by the microcomputer 21 so that the subcarrier signal of 4.43 MHz, the horizontal sync signal of 15.625 KHz, and 50.
A vertical synchronizing signal of Hz is generated and the signal is sent to the video encoder 6. The video encoder 6 is in the PAL mode under the control of the microcomputer 21 and outputs a PAL video signal.

In the AUTO mode, the microcomputer 21 sets the MP
From the image size (the number of vertical lines and the number of horizontal pixels of the image) of the image written in the sequence header in the video coded bitstream of the video CD from the EG decoder 3 to N
The TSC / PAL image format is discriminated, and the NTSC / PAL mode switching of the video encoder 6 and the synchronizing signal generation circuit 8 is automatically performed according to the discriminated image format. From the video encoder 6, according to the recorded image format of the video CD disc, NTSC
/ PAL system video signal is output.

When the video cassette tape is reproduced, when the VTR reproduction button in the VTR operation section 22b is pressed, the video cassette tape 1 is controlled by the microcomputer 21.
The contents recorded in 8 are reproduced by the video head 17, and the output switching SW 19 is switched to the b side. The signal reproduced by the video head 17 is input to the VTR unit 16, the VTR unit 16 enters the reproduction mode (hereinafter, referred to as VV system), and is output from the output terminal 20 via the output switching SW 19.

Next, the case of recording in the VTR section will be described. In this case, what can be recorded is any one of a television broadcast received by the tuner 12, an external input from the external input terminal 13, and a video CD reproduction output from the video CD reproduction unit 1.

First, when receiving a television broadcast, the input switching operation section 22c in the key input section 22 is operated to control the input switching S under the control of the microcomputer 21.
W14 is switched to the side a, input switch SW15 is switched to the side b, and output switch SW19 is switched to the side b. Then, the signal received by the tuner 12 is input switching SW1.
It is input to the VTR section 16 via 4, 4 and recorded on the video cassette tape 18 via the video head 17. At the same time, the VTR unit 16 becomes all modes other than the reproduction mode (stop, recording, fast-forward, rewind mode, hereinafter referred to as EE system), and the output switching S
It is output from the output terminal 20 via W19.

Next, when dubbing the recorded information of the video CD onto the video cassette tape, when the button of the dubbing operation portion 22d in the key input portion 22 is pressed, the microcomputer 21 reproduces the video CD reproducing portion 1, The VTR section 16 is set in the recording state, and the input switching SW 15 is switched to the a side. Then, the reproduction signal of the video CD reproducing unit 1 is input to the VTR unit 16 via the input switching SW 15 and recorded on the video cassette tape 18 by the video head 17.

At this time, when the video mode switching SW 22e in the key input unit 22 is in the NTSC mode, the NTSC playback video signal output from the video encoder 6 is input to the VTR unit 16 via the input switching SW 15,
NTS on video cassette tape 18 with video head 17
It is recorded in the C format. In the PAL mode, the PAL reproduction video signal output from the video encoder 6 is input to the VTR unit 16 via the input switching SW 15 and recorded on the video cassette tape 18 by the video head 17 in the PAL system. In the AUTO mode, the microcomputer 21 is MPE
The NTSC / PAL image format is determined from the image size (the number of vertical lines and the number of horizontal pixels of the image) of the image written in the sequence header in the video coded bitstream of the video CD shown in FIG. 3 from the G decoder 3 Then
The video encoder 6 according to the determined image format,
The NTSC / PAL mode switching of the synchronizing signal generation circuit 8 is automatically performed. From the video encoder 6, the video C
An NTSC / PAL video signal is output according to the recorded image format of the D disc, is input to the VTR unit 16 via the input switching SW 15, and is recorded on the video cassette tape 18 by the video head 17.

As described above, according to the present embodiment, both the audio and NTSC / PAL type audio and video signals are reproduced by using the disc reproducing section capable of reproducing the audio and NTSC / PAL type video images from the video CD. A magnetic recording / reproducing unit capable of recording / reproducing an image, an image size discriminating unit for discriminating an image size written in the image information of a video CD reproduced by the disc reproducing unit, and information of the image reproducing unit of the disc reproducing unit. A recording / reproducing apparatus integrated with a microcomputer comprising a control unit for controlling an NTSC / PAL reproduction image system and a magnetic recording / reproduction unit NTSC / PAL recording image system, wherein an operation unit of a disk reproduction unit is operated. A switching device that outputs the reproduction signal of the disk reproduction unit when the operation signal is output and outputs the reproduction signal of the magnetic recording reproduction device when the operation unit of the magnetic recording reproduction unit is operated. By providing the output terminals of the device requires only one system. In addition, it is not necessary to switch the recording video mode of NTSC / PAL depending on the image format of the video CD, and the audio and video playback signals of the disc playback unit can be recorded on the video cassette tape at the magnetic recording / playback unit by a single operation. Dubbing becomes possible.

[0037]

As described above, according to the recording / reproducing apparatus of the present invention, the reproduction image mode switching of the NTSC / PAL can be performed at any time by the disk reproducing unit having the reproduction image mode switching by the image size automatic discrimination control function of the video CD. Since it does not need to be performed, it has an excellent effect that operability can be simplified.

Further, since a disk reproducing section and a magnetic recording / reproducing section are provided in the same device and can be switched and output, a single output terminal and a single external input terminal for the monitor are sufficient. In addition, it has an excellent effect that the conventional connection between the disk reproducing apparatus and the magnetic recording / reproducing apparatus becomes unnecessary.

Further, when dubbing the reproduction signal of the video CD onto the video cassette tape, it is not necessary to switch the recording image mode of NTSC / PAL, and it has an excellent effect that it can be performed by one operation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a video mode switching switch in the key input unit according to the first embodiment.

FIG. 3 is a diagram showing the structure of a video coded bitstream of a video CD according to the first embodiment.

FIG. 4 is a block diagram showing a configuration of a recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a schematic configuration of a recording / reproducing apparatus according to the second embodiment.

[Explanation of symbols]

 1 Video CD Playback Section 2 CD Drive 3 MPEG Decoder 4 RAM 5 Video DAC 6 Video Encoder 8 Sync Signal Generation Circuit 9 Microcomputer 10 Key Input Section 16 VTR Section 18 Video Cassette Tape 19 Output Switching SW 21 Microcomputer 22 Key Input Section 22a Video CD Operation part 22b VTR operation part 22c Input switching operation part 22d Dubbing operation part 22e Video mode switching switch

Claims (6)

[Claims] 1. A recording / reproducing apparatus capable of reproducing a video CD on which audio information and video information are recorded, and disk reproducing means capable of reproducing both audio and NTSC / PAL video from the video CD. NT of the disc reproducing means by the image size discriminating means for discriminating the image size information written in the video information of the video CD reproduced by the disc reproducing means and the information of the image size discriminating means.
A recording / reproducing apparatus comprising: a control means for controlling based on a reproduction video system of SC / PAL. 2. A recording / reproducing apparatus capable of reproducing a video CD on which audio information and video information are recorded, wherein the image size information written in the video information of the reproduced video CD is discriminated and judged. NTSC / based on image size information
A recording / reproducing apparatus characterized by controlling a PAL reproduction video system. 3. The disk reproducing means extracts a digital data by extracting audio information and video information from a video CD, an MPEG decoder extracting digital audio data and digital video data from the digital data, and the digital data. A random access memory for accumulating data, a video digital-analog conversion means for converting the digital video data into analog video data, a video encoder for converting the analog video data into a video signal, a subcarrier signal and horizontal and vertical synchronization signals. The recording / reproducing apparatus according to claim 1, comprising a synchronizing signal generating circuit for generating the synchronizing signal. 4. A disc reproducing means capable of reproducing both audio and NTSC / PAL video signals from a video CD on which audio information and video information are recorded, and both audio and NTSC / PAL systems using a video cassette tape. Magnetic recording / reproducing means capable of recording / reproducing the image signal, and image size discriminating means for discriminating the image size written in the video information of the video CD reproduced by the disc reproducing means, and information of the image size discriminating means. A recording / reproducing apparatus comprising: a control means for controlling an NTSC / PAL reproduction video system of the disc reproducing means, wherein a first control section capable of controlling the disc reproducing means and the magnetic recording / reproducing means are controlled. A possible second control unit, whichever of the video signal reproduced by the disk reproducing means or the video signal reproduced by the magnetic recording / reproducing means. A recording / reproducing apparatus comprising: one output unit capable of outputting 5. The magnetic recording / reproducing device outputs a reproduction signal from the disc reproducing device when the first controller controls the disk reproducing device, and the magnetic recording / reproducing device when the second controller controls the magnetic recording / reproducing device. A recording / reproducing apparatus, wherein the reproducing signal of the means is switched to be output from an output section. 6. A disk reproducing means capable of reproducing both audio and NTSC / PAL video from a video CD on which audio information and video information are recorded, and both audio and NTSC / PAL video reproduction using a video cassette tape. A magnetic recording / reproducing means capable of recording / reproducing an image, an image size discriminating means for discriminating an image size written in the image information of a video CD reproduced by the disc reproducing means, and the disc by the information of the image size discriminating means. Reproduction means NTSC
/ PAL playback video system and N of the magnetic recording and playback means
A recording / reproducing apparatus including a control means for controlling a recording / video system of TSC / PAL, which is a third control for controlling to record the audio information and the video information recorded on the video CD on the video cassette tape. A recording / reproducing apparatus comprising a unit.