KR970007797B1 - Apparatus for controlling input signals and output signals in a mixed product of optical disk player and video cassatte recoring - Google Patents

Abstract

An apparatus for controlling an inputting/outputting operation at an electronic production containing an optical disk player and a VCR is disclosed. The apparatus comprises a first switching unit(SW1), responsive to a control signal from a microcomputer(10), switching an input video signal and a composite image signal from a video signal playing unit(14,16,20) to provide a selected one to a video signal estimation unit(30); a second switching unit(SW2), responsive to the control signal from the microcomputer(10), for switching an inputted audio signal, the audio signal from the digital signal processing unit(8) and the audio signal from the audio signal replaying unit(14,18) to provide a selected one to the audio signal processing unit(32); a third switching unit(SW3) responsive to the control signal from the microcomputer(10), for switching the video output signal from the video signal processing unit(30) and the composite video signal from the video signal playing unit(14,16,30); and a fourth switching unit(SW4), responsive to the control signal from the microcomputer(10), for switching the audio output signal from the audio signal processing unit(32) and the audio signal from the digital signal processing unit(8).

Description

[Brief Description of Drawings]

Input / output control device for composite product of optical disc player and VCR (VIDEO CASSETTE RECORDER)

[Brief Description of Drawings]

1 is a circuit block diagram showing an input / output control device in a combination product of an optical disc play and a VCR according to the present invention.

FIG. 2 is a flowchart showing the control operation of the microcomputer shown in FIG.

* Explanation of symbols for main parts of the drawings

2: optical disc 4: optical pickup

6: RF amplification circuit 8: digital signal processing circuit

10: microcomputer 12: key input unit

14: CD-ROM decoder 16: MPEG video coder

18: MPEG audio encoder 20: RGB encoder

22: video head 24: audio head

26, 28: amplification circuit 30: video signal processing circuit

32: audio signal processing circuit SW1: video input switching means

SW2: audio input switching means SW3: video output switching means

SW4: Audio output switching means

Detailed description of the invention

The present invention relates to an input / output control device for a composite product of an optical disc player and a VCR (VIDEO CASSETTE RECORDER), and more particularly, to a reproduction output of an optical disc, a reproduction output of a VCR, and a recording of a VCR in a composite product of an optical disc player and a VCR. The present invention relates to an input / output control device in a composite product of an optical disc player and a VCR configured to integrally control an input.

Nowadays, a compact disc digital audio (CDDA; abbreviated as CD) is widely used as an information recording medium in the form of an optical disc in which a large amount of audio information is recorded. The compact disc is used to optically detect and reproduce recorded data. Theoretically, it has the advantage of always having a uniform hi-fi reproduction characteristic regardless of the number of times the disc is played.

In addition, a video compact disc (VCD) capable of obtaining a video output of a moving image through a display device such as a television screen or a monitor as well as an excellent high-fidelity audio output such as the compact disc digital audio is developed. It satisfies the consumer's need for bonding.

However, since these CDs and VCDs can only be played back, if the user wishes to edit the recorded contents recorded on the CDs and VCDs, the audio / video outputs of the optical disc player for playing the CDs and VCDs are respectively provided. Set the optical disc player to playback mode by connecting one end of the video cable and the other end of the audio / video cable to the audio / video input of a device capable of recording and playing audio / video signals, such as a video tape recorder (VCR). Then, the VCR is set to the recording mode, and the contents recorded on the CD and the VCD are edited on the videotape according to the user's preference.

In addition, the optical disc player and the VCR have an audio output terminal and a video output terminal, respectively. In the case of the video / audio output, an optical disc is provided when only one video input terminal and two video output terminals (R channel and L channel) are installed in a television or a monitor. There is a hassle of having to reinstall the audio / video cable between the player and the VCR.

Therefore, when the optical disc player and the VCR are compactly combined, the optical disc player and the VCR can be compactly controlled. There is a convenience that can be controlled by the input unit. In order to provide such convenience, it is desirable to develop an input / output control device that can control the input / output of a composite product integrally.

Accordingly, the present invention has been made in view of the above circumstances, and an optical disc is designed to efficiently and integrally control the playback output of an optical disc, the playback output of a VCR, and the recording input of a VCR by simply adding a simple configuration in a composite product of an optical disc player and a VCR. The purpose is to provide an input / output control device for a combination product of a player and a VCR.

According to an input / output control apparatus in a composite product of an optical disc player and a VCR according to a preferred embodiment of the present invention, the digital signal processing of optically read data from an optical disc of a CD or VCD under the control of a microcomputer Digital signal processing means for outputting a signal, a video signal reproducing means for converting a compressed video signal from the digital signal processing means into a composite video signal, and outputting the compressed audio signal from the digital signal processing means. An optical disc reproducing unit comprising an audio signal reproducing means for converting and outputting an audio signal and the audio / video signal stored in the video tape by the audio / video head under the control of the microcomputer to amplify the video and audio signal processing means Composite video signal and audio scene A composite product of an optical disc player and a VCR having a composite VCR unit for outputting or recording a composite video signal and an audio signal to a video tape via the video and audio signal processing means, wherein the control signal of the microcomputer First switching means for switching and switching the video input signal from the outside and the composite video signal from the video signal reproducing means to the video signal processing means, and the audio input signal from the outside according to the control signal of the microcomputer. Second switching means for switching and switching the audio signal from the digital signal processing means and the audio signal from the audio signal reproduction means to the audio signal processing means, and from the video signal processing means in accordance with a control signal of the microcomputer. Video output signal and the video Third switching means for switching and outputting the composite video signal from the call reproducing means and the audio signal from the audio signal processing means, the audio signal from the audio signal reproducing means, and the digital signal processing according to the control signal of the microcomputer. And fourth switching means for switching and outputting the audio signal from the means.

The microcomputer outputs a control signal for the fourth switching means to select the CD audio line while controlling the CD play operation when the CD play mode for playing the CD is selected as the optical disc.

When the recording mode for recording the audio signal reproduced on the CD is selected on the video tape while the CD playback mode is selected, the microcomputer controls the CD playback operation while the fourth switching means controls the CD audio line. While continuing to output a control signal for selecting the control unit, the audio head and the audio signal processing means are controlled to be in a recording operation state, and at the same time, the second switching means outputs a control signal for selecting the CD audio line. .

The microcomputer controls the audio and video signal reproducing means so that the fourth switching means selects the VCD audio line when the VCD reproducing mode for reproducing the VCD is selected as the optical disc. At the same time, the third switching means outputs a control signal for selecting the VCD video line.

The microcomputer controls the audio and video signal reproducing means when the recording mode for recording the audio / video signal reproduced on the VCD on the video tape is selected when the VCD reproducing mode is selected. Perform the operation and cause the fourth switching means to select the VCD audio line and at the same time, while regulating the output of the control signal for causing the third switching means to select the VCD video line, the audio / video head and audio / video signal processing. The control means is brought into a recording operation state, and the second switching means causes the VCD audio line to be selected and the first switch means outputs a control signal for selecting the VCD video line.

The microcomputer controls the audio / video head and the audio / video signal processing means to be in the playback operation state when the VCR playback mode is selected for playing the video tape, and the fourth switching means is connected to the VCR audio line. In addition, the third switching means outputs a control signal for selecting the VCR video line.

The microcomputer controls the audio / video head and audio / video signal processing means to be in a recording operation state when a recording mode for recording an external input signal input from the outside is recorded on the video tape. The switching means selects an external audio input line and outputs a control signal for allowing the first switching means to select an external video input line.

Hereinafter, with reference to the accompanying drawings will be described in detail the input and output control apparatus in the composite product of the optical disc player and the VCR according to the present invention.

1 is a circuit block diagram showing an input / output control apparatus in a combination product of an optical disc player and a VCR according to the present invention.

In the figure, reference numeral 2 denotes an optical disc such as a VCD, 4 denotes an optical pickup for optically reading data recorded on the optical disc 2, and 6 denotes an optical pickup 4 not shown. An amplification circuit for amplifying the RF signal from the photo detector, 8 is a digital signal processing circuit section for receiving the RF signal from the RF amplification circuit (6), for example by performing EFM (Eight to Fourteen Modulation) demodulation and error correction to be. Here, the digital signal processing circuit unit 8 converts the audio signal of the CD into an analog audio signal (not shown) and outputs the analog audio signal under the control of the microcomputer 10 when the CD is played, while the VCD is output. When reproduced, a series of data streams including an audio signal, a video signal, and a decoding control signal compressed by the MPEG method reproduced by the VCD is output to the CD-ROM decoder 14 described below under the control of the microcomputer 10. .

Reference numeral 14 denotes a CD-ROM decoder which decodes the data stream from the digital signal processing circuit 8 to extract the compressed audio signal, the compressed video signal, and the decoding control signal, and 16 denotes the CD-ROM decoder 14. Is an MPEG video decoder which receives the compressed video signal and the decoding control signal from the CD-ROM decoder and decodes the compressed video signal according to the decoding control signal, and 18 denotes the compressed audio signal and the decoding control signal from the CD-ROM decoder 14. Is an MPEG audio decoder for decoding a compressed audio signal according to the decoding control signal, and 20 is an RGB encoder for converting and outputting a digital video output signal of the MPEG video decoder 16 into an analog composite video signal. Here, the digital audio signal from the MPEG audio decoder 18 is converted into an analog audio signal through a digital / analog converter (not shown).

Reference numeral 22 is a video head for recording video data on the video tape or reading video data from the video tape, and 24 is an audio head for recording audio data on the video tape or reading audio data from the video tape. 30 signals the video signal input from the outside in the recording mode and applies it to the video head 22 via the amplifying circuit 26 while amplifying the data read from the video head 22 in the playback mode. A video signal processing circuit unit which receives a circuit 26 through a video signal and outputs the video signal, and 32 indicates that the audio signal 24 is processed through an amplifying circuit 28 by processing an audio signal input from the outside in the recording mode. In the playback mode, the audio signal received from the audio head 24 is input through the amplifying circuit 28 as an audio signal. Li to an audio signal processing circuit for outputting.

Reference numeral 12 denotes a tape playback mode key for playing back a video tape, a recording mode key for recording on a video tape, a recording mode key for recording on a video tape, a disk playback mode key for playing back the optical disk, and the like. A tee input unit for performing control input, and 10 denotes a tee input unit for receiving a control input signal from the key input unit 12, decoding the control input signal to set a control mode, and executing a control operation of the corresponding control mode. It is a microcomputer that outputs a control signal to the component.

Reference numeral SW1 denotes an external video input signal (e.g., a composite video signal of a video signal taken from a camcorder or a TV broadcast signal from a tuner) and the RGB encoder according to a control signal of the microcomputer 10. 20 is a video input switching means for switching and switching a composite video signal (i.e., an audio signal reproduced on a VCD) to the input terminal IN of the video signal processing circuit section 30.

Reference numeral SW2 denotes an external audio input signal (e.g., an audio signal from a camcorder or an audio signal from a television broadcast signal from a tuner) according to the control signal of the microcomputer 10, and the digital signal processing circuit section 8. Switching from an audio signal (i.e., an audio signal reproduced from a CD) and an audio signal (i.e., an audio signal reproduced from a VCD) from the MPEG audio decoder 18 to input the audio signal processing circuit 32. Audio input switching means applied to the terminal IN.

Further, reference numeral SW3 denotes a composite of the video output signal (ie, the video signal reproduced on the video tape) from the video signal processing circuit unit 30 and the RGB encoder 20 according to the control signal of the microcomputer 10. A video output switching means for switching a video signal (i.e., a video signal reproduced on a VCD) and outputting the video signal to a video output device such as a television or a monitor.

Reference numeral SW4 denotes an audio output signal (i.e., an audio signal reproduced on a video tape) from the audio signal processing circuit 30 and the MPEG audio coder 18 according to the control signal of the microcomputer 10. Audio output switching means for switching and switching audio signals (i.e., audio signals reproduced on a VCD) and audio signals (i.e., audio signals reproduced on a CD) from the digital signal processing circuit section 8 and outputting them to a speaker (not shown). to be.

Next, the operation of the input / output control device in the composite product of the optical disc player and the VCR constructed as described above will be described in detail with reference to the control flow diagram shown in FIG.

That is, first, in step S1, it is determined whether the power-on input is made from the key input unit 12, and if there is a power-on input, then the control proceeds to the next step S2. It is determined whether it is selected. At this time, if the CD playback mode is selected, the control proceeds to step S3 to control the CD playback operation as in a general CD player, while the microcomputer 10 is connected to the audio output switching means (SW4) through the CD audio line (S4). R4) By outputting the selection control signal, the audio data read out by the optical pickup 4 from the optical disc 2, which is a CD, is signal-processed by the RF amplifier circuit 6 and the digital signal processing circuit section 8, and then the audio output switching. It outputs via means SW4.

During this playback operation, the microcomputer 10 determines whether the recording mode is selected from the key input unit 12 (step S4), and if the recording mode is not selected, the control proceeds to step S7 while the recording mode is selected. Proceeding to step S5, the audio head 24 and the audio signal processing circuit unit 32 are controlled to be in the recording operation state while continuing the above CD playback operation, and at the same time, the audio input switching means SW2 through the control line A6. By outputting the CD audio line Q2 selection control signal, the audio data read out by the optical pickup 4 from the optical disc 2, which is a CD, is processed by the RF amplifier circuit 6 and the digital signal processing circuit section 8. Then, the audio reproduction signal of the CD currently being reproduced is transferred to the video tape by being applied to the audio head 24 via the audio input switching means SW2, the audio signal processing circuit portion 32, and the amplification circuit 28. So that sound.

Thereafter, in step S6, the microcomputer 10 determines whether the recording end mode is selected from the key input unit 12, and if the recording end mode is not selected, the operation of the step S5 is continued while the recording end mode is selected. After ending the recording operation in step S5, the control proceeds to the next step S7 to determine whether the CD play end mode is selected from the key input unit 12. As a result of the determination in step S7, when the CD playback end mode is not selected, control returns to the above step S3 to continue the CD playback operation, while when the CD playback end mode is selected, the control returns to the above step S2. Goes.

On the other hand, when the determination result of step S2 indicates that the CD playback mode is not selected, control proceeds to step S8 to determine whether the VCD playback mode is selected from the key input unit 12. As a result of the determination of step S8, VCD playback If the mode is selected, the flow advances to step S9 to control the VCD playback operation as in the case of the general VCD player (i.e., the CD-ROM decoder 14, the MPEG video decoder 16, the MPEG audio decoder 18 and the RGB encoder 20). Outputs an operation control signal). The microcomputer 10 outputs the VCD audio line () selection control signal to the audio output switching means (SW4) through the control line (A4) so that the audio signal output from the MPEG audio decoder (18) is converted to the audio output switching means (SW4). And outputs the VCD video line Q3 selection control signal to the video output switching means SW3 through the control line A5, so that the video signal output from the RGB encoder 20 switches the video output. It outputs via means SW3.

Then, during the above playback operation, the microcomputer 10 determines whether the recording mode is selected from the key input unit 12 (step S10), and if the recording mode is not selected, the control proceeds to step S13 while the recording mode is selected. If is selected, control proceeds to step S11 to control the audio and video heads 24 and 22 and the audio and video signal processing circuits 32 and 30 to be in a recording operation state while continuing the VCD playback operation. By outputting the VCD audio line R3 selection control signal to the audio input switching means SW2 through A6, the audio signal output from the MPEG audio coder 18 is converted into the audio input switching means SW2 and the audio signal processing circuit portion ( 32) and the amplification circuit 28 to be applied to the audio head 24, and the microcomputer 10 controls the VCD video line Q1 to the video input switching means SW1 through the control line A7. signal The video signal output from the RGB encoder 20 is also applied to the audio head 22 through the video input switching means SW1, the video signal processing circuit 30 and the amplifying circuit 26 by outputting Audio and video playback signals of the VCD are recorded on the videotape.

Subsequently, in step S12, the microcomputer 10 determines whether the recording end mode is selected from the key input unit 12, and if the recording end mode is not selected, the operation of the step S11 is continued while the recording end mode is selected. After the recording operation in step S11 is finished, the control proceeds to the next step S13 to determine whether the VCD playback end mode is selected from the key input unit 12. As a result of the determination in step S13, when the VCD playback end mode is not selected, the control returns to the above step S9 to continue the VCD playback operation, while when the VCD playback end mode is selected, the control returns to the above step S2. Goes.

On the other hand, if the determination result of step S8 is that the VCD playback mode is not selected, control proceeds to step S14 to determine whether the VCR playback mode is selected from the key input unit 12. At this time, if the VCR playback mode is selected, step S15. The microcomputer 10 outputs a playback control signal through a control line A2 to bring the audio and video heads 24 and 22 and the audio and video signal processing circuits 32 and 30 into a playback operation state. By outputting the VCR audio line P4 selection control signal to the audio output switching means SW4 via the control line A4, the audio signal read by the audio head 24 is amplified by the amplification circuit 28 and the audio signal processing circuit section. 32 and the audio output switching means SW4, and the microcomputer 10 sends a VCR video line P3 selection control signal to the video output switching means SW3 through the control line A5. Output by video Such that the video signal read by the head 22 the output amplifier circuit 26 and the video signal processing circuit 30 and the video output switching means (SW3) to the medium.

Subsequently, in step S16, the microcomputer 10 determines whether the playback end mode is selected from the key input unit 12, and if the playback end mode is not selected, the playback operation of step S15 is continued while the playback end mode is selected. If so, the playback operation in step S15 ends, and control returns to step S2.

On the other hand, if the VCR playback mode is not selected as a result of the determination in step S14, the control proceeds to step S17 to determine whether the VCR recording mode is selected. In this case, if the VCR recording mode is selected, the microcomputer 10 in step S18 is the control line. Outputs a recording control signal through A2 so that the audio and video heads 24 and 22 and the audio and video signal processing circuits 32 and 30 are in a recording operation state, and through the control line A6. By outputting the external audio input line P2 selection control signal to the audio input switching means SW2, the external audio input is transmitted through the audio output switching means SW2, the audio signal processing circuit part 32, and the amplification circuit 28. The external audio signal is recorded on the video tape by being applied to the video head 24, and at the same time, the external video input line P1 is selected by the video input switching means SW1 through the control line A7. By outputting the audio signal, the external video signal is applied to the video head 22 through the video signal processing circuit 30 and the amplifying circuit 26 by the video input switching means SW1. Make sure to record.

Thereafter, in step S19, the microcomputer 10 determines whether the recording end mode is selected from the key input unit 12, and if the recording end mode is not selected, the recording operation of step S18 is continued while the recording end mode is selected. If so, the recording operation in step S18 ends, and control returns to step S2.

When the VCR recording mode is not selected as a result of the determination in step S17, the control proceeds to step S20 to determine whether the power off input is selected from the key input unit 12, and when there is a power off input, all control operations are finished. On the other hand, if there is no power off input, control returns to the above step S2.

As described above, according to the present invention, in the video / audio reproducing operation, recording operation of an external input, reproducing operation of an optical disc such as a CD or VCD, and recording operation of a video and audio signal reproduced from the optical disc, The input and output of the signal can be integrated and efficiently controlled.

Claims (7)

Digital signal processing means (8) for digitally signal-processing and outputting data optically read from the optical disc (2) of a CD or VCD under the control of the microcomputer (10), and compressed video from the digital signal processing means (8). A video signal reproducing means (14, 16, 20) for converting a signal into a composite video signal by outputting the signal and converting the compressed audio signal from the digital signal processing means (8) into an audio signal for outputting the converted audio signal An optical disc reproducing unit comprising signal reproducing means 14 and 18, and audio / video signals stored in the video tape by the audio / video heads 24 and 22 under the control of the microcomputer 10 to amplify the video and The composite video signal and the audio signal are outputted through the audio signal processing means 30 and 32, or the composite video signal and the audio signal are input. In a composite product of an optical disc player and a VCR having a VCR unit for recording on a video tape via a medium, a video input signal from the outside and the video signal reproducing means 14, in accordance with a control signal of the microcomputer 10, are provided. First switching means SW1 for switching and switching the composite video signal from 16 and 20 to the video signal processing means 30, and an audio input signal from the outside according to the control signal of the microcomputer 10; Second switching means SW2 for switching and switching the audio signal from the digital signal processing means 8 and the audio signal from the audio signal reproducing means 14 and 18 to the audio signal processing means 32; Switching of the video output signal from the video signal processing means 30 and the composite video signal from the video signal reproduction means 14, 16 and 20 according to the control signal of the microcomputer 10. The audio output signal from the audio signal processing means 32 and the audio signal from the audio signal reproduction means 14 and 18 according to the control signals of the third switching means SW3 and the microcomputer 10 And a fourth switching means (SW4) for switching and outputting the audio signal from the digital signal processing means (8). The fourth switching means (SW4) is the CD audio line (R4) while controlling the CD playback operation when the CD playback mode for playing the CD is selected as the optical disk (2). Input / output control device in a combination product of an optical disc player and a VCR, characterized in that for outputting a control signal to select. The apparatus of claim 2, wherein the microcomputer (10) controls the CD playback operation when the recording mode for recording the audio signal played on the CD on the video tape while the CD playback mode is selected. Four switching means SW4 continue to output a control signal for selecting the CD audio line R4, while simultaneously controlling the audio head 24 and the audio signal processing means 32 to be in a recording operation state. An input / output control apparatus for a combination product of an optical disc player and a VCR, characterized in that for outputting a control signal for the second switching means (SW2) to select the CD audio line (Q2). 2. The VCD reproducing apparatus according to claim 1, wherein the microcomputer (10) controls the audio and video signal reproducing means (14, 16, 18, 20) when the VCD reproducing mode for reproducing the VCD is selected as the optical disc (2). Operating the fourth switching means SW4 to select the VCD audio line Q4 and at the same time outputting a control signal to the third switching means SW3 to select the VCD video line Q3. Input / output control device for composite product of optical disc player and VCR. The audio and video signal according to claim 4, wherein when the recording mode for recording the audio / video signal reproduced on the VCD on the video tape is selected while the microcomputer 10 selects the VCD playback mode. The reproducing means 14, 16, 18 and 20 are controlled to perform the VCD reproducing operation, and the fourth switching means SW4 selects the VCD audio line Q4 and at the same time the third switching means SW3 is VCD. The audio / video heads 24 and 22 and the audio / video signal processing means 32 and 30 are controlled to be in a recording operation state while continuing to output a control signal for selecting the video line Q3. An optical disc player, characterized in that the second switching means SW2 selects the VCD audio line R3 and outputs a control signal for causing the first switching means SW1 to select the VCD video line Q1. In combination with The output control device. The audio / video head (24, 22) and the audio / video signal processing means (32, 30) according to claim 1, wherein when the VCR playback mode for reproducing the video tape is selected, A control signal for causing the fourth switching means SW4 to select the VCR audio line P4 while controlling to be in a reproducing operation state and for allowing the third switching means SW3 to select the VCR video line P3. Input / output control device in a composite product of an optical disc player and a VCR, characterized in that the output. The audio / video heads 24 and 22 and audio / video signal processing of the microcomputer 10 when the recording mode for recording an external input signal input from the outside is selected on the video tape. The second switching means SW1 selects the external audio input line P2 while the means 32 and 30 are controlled to be in the recording operation state, and the first switching means SW1 are connected to the external video input line. An input / output control apparatus in a combination product of an optical disc player and a VCR, characterized by outputting a control signal for selecting (P1).