KR950005924Y1 - Tvcr system - Google Patents

Abstract

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Description

tea. V. TV (TVCR) system

1 is a block diagram of a conventional TVCR system.

2 is a block diagram of a TVCR system according to the present invention.

* Explanation of symbols for main parts of the drawings

1: remote control receiver 2: microcomputer

3: VCR power supply unit 4: Servo / system control unit

5: Tech part 6: Tuner and IF amplification part

7: Video signal rusted portion 10: Audio signal rusted portion

11: External terminal group 12: TV power supply

13 image processor 14 voice processor

SW: Power Switch Sai, Sao, Svi, Svo: Video & Audio Switch

The present invention relates to a TVCR system in which a TV set and a VCR set are combined with each other, and more particularly, to a TVCR system configured to operate the other set even when a failure of any one set constituting the TVCR occurs.

Looking at the conventional TVCR system through Figure 1 as follows.

As shown in the drawing, a conventional TVCR system includes a remote controller receiver 1, a timer microcomputer 2, a servo / system controller 4, a DECK 5, a tuner and an IF amplifier 6, Since the video signal recording / reproducing section 7 and the audio signal recording / reproducing section 10 belong to the mode VCR device section, if the VCR device section fails, TV viewing using the TV device section is also impossible. . Reference numerals 8 and 9 in the drawings are image switches.

Accordingly, an object of the present invention is to provide a TVCR system configured to allow viewing using a TV set even when a VCR set part is broken in the TVCR system.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 2.

As shown in the figure, the TVCR system constructed in accordance with the present invention receives an external function key input to control the entire system and to drive a mechanical device, and a control of the servo / system control unit 4. And a video recording and reproducing section 7 for transmitting a video signal to and from the deck section 5 under control of the servo / system control section 4, and driving the video tape. / VCR set unit having a voice recording and reproducing unit 10 for exchanging voice signals with the deck unit 5 under the control of the system control unit 4, and the control from the servo / system control unit 4 The controller receives a signal as serial data to control the TV set unit, a timer microcomputer 2 for controlling a timer, tuning, and an OSD function, and a remote controller receiving unit for receiving an external remote controller operation signal and transmitting the signal to the microcomputer 2 ( 1) and the microcomputer 2 Tuner and IF amplifier 6 and the microcomputer 2 to tune the TV signal input from the antenna and perform intermediate frequency (IF) amplification and the image recording and reproducing unit 10 or An image processor 13 for processing the image signal transmitted from the tuner and the IF amplifier 6 and displaying the image signal on a CRT, and an audio signal transmitted from the audio recording and reproducing unit 10 or the tuner and the IF amplifier 6; A voice processing unit 14 for outputting a speaker and a voice recording and reproducing unit 10, a voice processing unit 14, a tuner, an IF amplifier 6, and an external terminal group under the control of the microcomputer 2; Audio switches (Sai, Sao) for switching the transmission and reception signals between the (11) and the image recording and playback unit 10, the image processing unit 13, the tuner and the IF amplifier (6) under the control of the microcomputer (2) ) And the image switch (Svi, Svo) for switching the transmission and reception signal between the external terminal group 11 and the control of the microcomputer (2) And a TV set section having a power switch (SW) for switching the power from the VCR set. The TV set section is configured to enable operation even in the event of a failure of the VCR device section.

Looking at the operation of the present invention configured as described above are as follows.

First, when the VCR device unit is normal, when an input of an external function key is transmitted to the servo / system control unit 4, the servo / system control unit 4 drives the deck unit 5, and the image recording and reproducing unit 7 ; (Hereinafter referred to as video recording) and audio recording and reproducing section 10; (Hereinafter referred to as voice recording unit) to transmit audio and video to be recorded to the deck unit 5, or to receive and reproduce recorded video signals and audio signals from the deck unit 5 and output them. do.

In addition, the operation instruction data is serially transmitted to the microcomputer 2 in the TV device unit. This microcomputer 2 performs timer, tuning and OCD functions.

Upon receiving the operation instruction signal of the system controller 4, the microcomputer 2 recognizes the operation instruction signal for recording audio and video of the TV signal, and operates the tuner and the IF amplifier 6 and switches (Sai). , Sao, Svi, Svo) to transmit the TV signal by the audio and video recording unit (7, 10).

In the case of reproduction of the video tape reproduced by the deck unit 5, the signals reproduced by the video and audio recording units 7 and 10 are controlled by controlling the switches Sai, Sao, Svi, and Svo. It is input to the processor 13 and the voice processor 14 so that it can be monitored through a screen or a speaker.

In addition, when there is an input of a function key requesting TV viewing, the system control unit 4 does not operate the deck unit 5 and the video and audio recording units 7 and 10, and only the operation instruction signal is the microcomputer 2. A TV signal processed by the tuner and the IF amplifier 6 is directly transmitted to the image processor 13 and the audio processor 14 by controlling the switches Sai, Sao, Svi, and Svo.

On the other hand, during the scheduled recording by the timer or the operation command signal through the remote control input through the remote control receiver 1, the microcomputer 2 is transmitted to the servo / system controller 4 in serial to perform the above-described overall operation. .

Next, look at the operation when the VCR is broken, the data communication between the servo / system control unit 4 and the microcomputer (2) is interrupted, the power switch (SW) is turned off (OFF) to cut off the VCR power supply, the microcomputer (2) Enable only to control TV related operation such as tuning, volume control, screen adjustment, clock function, OSD function. At this time, the external function key does not operate, and only the remote control operates.

In order to enable the operation of an external function key, a key input terminal may be installed and operated in the microcomputer 2. In this case, however, VCR related function keys do not operate.

Now, look at the operation of the power switch (SW) and the video and audio output control switch (Sao, Svo) as follows.

When the power switch SW is turned off, when the VCR is broken or when the user only wants to watch TV even if the VCR is normal, the power is switched off according to an external key operation.

In the case of ON, the on state is always maintained irrespective of the operation of the main power switch except in the case of the above-mentioned off.

When the VCR is normal and in the playback mode, the video and audio output control switches Sao and Svo output the high ('H') signal to the video and audio output jacks in the external terminal group 11. Video and audio processing units 13 and 14 allow a VCR playback signal to be input.

In the case of other than the reproduction mode, the signal input to the tuner and IF amplifier 6 or the video and audio input jacks is selected. Here, the video and audio outputs by the operation of an external function button even during playback. The tuner and IF amplification unit 6 is connected to the video and audio output jacks or the video and audio processing units 13 and 14 by the operation of an external donor button. The input signal from the video and audio input jacks can be selected.

On the other hand, when the VCR is broken, a low ('L') signal is output to the microcomputer 2 to operate only to select a signal input to the tuner and the IF amplifier 6 or the video and audio input jacks.

Therefore, the present invention configured and operated as described above enables TV operation even if a VCR breaks down in the TVCR system, thereby improving the performance of the entire system.

Claims (1)

A servo / system control unit 4 for controlling the entire system by receiving external function key inputs and driving a mechanical device, a deck unit 5 for driving a video tape under control of the servo / system control unit 4, The image recording and reproducing unit 7 which exchanges an image signal with the deck unit 5 under the control of the servo / system control unit 4, and the deck unit under the control of the servo / system control unit 4. A VCR device unit having a voice recording and reproducing section 7 for transmitting and receiving a voice signal with 5); The control signal from the servo / system controller (4) is input as serial data to control the TV section, and receives a microcomputer (2) for controlling timers, tuning and OSD functions, and an external remote control operation signal. Tuner and IF amplification unit 6 for tuning the TV signal input from the antenna under the control of the microcomputer 2 and performing intermediate frequency (IF) amplification, and the image recording under the control of the microcomputer 2. And an image processor 13 for processing the associative signals transmitted from the playback unit 7 or the tuner and the IF amplifier 6 and displaying them on the CRT, and the audio recording and playback unit 7 or the tuner and IF amplifier unit ( 6) a voice processing unit 13 for processing a voice signal transmitted from 6) and outputting it to a speaker, and under the control of the microcomputer 2, a voice recording and reproducing unit 10, a voice processing unit 14, a tuner, and an IF amplifier unit. Voice for switching the transmission and reception signals between the 6 and the external terminal group 11 Position (Sai, Sao) and the transmission and reception between the image recording and playback unit 7, the image processing unit 13 and the tuner and IF amplifier 6 and the external terminal group 11 under the control of the microcomputer (2) And a TV device section including a video switch (Svi, Svo) for switching signals and a power switch (SW) for switching power from the VCR device under the control of the microcomputer (2). And the TV device unit is operable.