KR970073006A - Video signal processing device of multi-TVCR - Google Patents

Abstract

[0001] The present invention relates to a video signal processing apparatus of a multi-TVCR, which recognizes a user's selection through a key input unit or a remote controller, an internal abnormality thereof, and the like, A microprocessor for controlling the overall operation of the microprocessor, a servo drive system for controlling a circuit operation according to signal processing according to recording, reproduction, etc. of the cassette tape under the control of the microprocessor, A first and a second intermediate frequency amplifying unit for amplifying and detecting the television broadcast signal selected by the first and second tuners and outputting it as an intermediate frequency signal of a constant frequency, A video signal is detected from an intermediate frequency signal output from the amplifying unit A first detection unit for selectively outputting a video signal included in a video signal output from the first detection unit and a second detection unit for selectively outputting a voice signal included in a video signal output from the first detection unit; The first switching IC receives a luminance signal and a color difference signal from a color demodulator that receives a video signal from the first switching IC, and outputs the luminance signal and the color difference signal to the monitor. A video signal from the second detection unit and a video signal reproduced from the external video cassette recorder are input to both sides of the first contact operated by the control signal (AV / TRNER) of the microprocessor, The signal is transmitted to the servo drive system to be recorded by the head, and at the second contact operated by the control signal B, A second switching IC for receiving the video signal from the external video cassette recorder and the video signal from the external video cassette recorder and for outputting the video signal to the other side of the first switching IC and the microprocessor control signals PB and V / And third switching ICs receiving the video signals from the trap unit, the second detection unit, and the servo driving system while receiving the input, and selectively outputting the video signals to the external video cassette recorder for recording. Thus, The television broadcasting signal of the other channel can be watched while the television broadcasting signal of the certain channel is being recorded on the cassette tape.

Description

Video signal processing device of multi-TVCR

Since this is a trivial issue, I did not include the contents of the text.

FIG. 1 is a block diagram showing a schematic configuration of a TVCR according to the present invention; FIG. 2 is a flow chart showing an operation procedure of the present invention;

Claims (4)

A microprocessor for recognizing the user's selection and controlling the overall operation such as channel selection and signal processing, a servo drive system for controlling circuit operation according to signal processing according to cassette tape recording, reproduction, and the like, A first and a second detector for receiving a television broadcast signal selected from the first and second intermediate frequency amplifiers and outputting a video signal after signal processing and receiving an intermediate frequency signal through the first and second intermediate frequency amplifiers, A first switching IC for selectively outputting a video signal input to one side and a video signal input to the other side in the trap unit; A CRT driver for receiving a video signal through a color demodulator and expressing the video signal as an image on a monitor; And transmits the video signal from the second detection unit or the video signal reproduced from the external video cassette recorder to the servo driving system at the first contact point and the video signal from the servo driving system or the external video cassette recorder at the second contact point A second switching IC for outputting a video signal to the first switching IC and a second switching IC for selectively outputting a video signal from the trap unit and the second detection unit or the servo driving system to an external video cassette recorder under the control of the microprocessor Wherein the third switching ICs comprise a first switching IC and a second switching IC. [2] The apparatus of claim 1, wherein the first switching IC receives the internal and external selection signals INT / EXT from the microprocessor, selectively outputs a video signal input to one side of the trap unit or a video signal input to the other side, Video signal processing apparatus of multi-TVCR. [2] The apparatus of claim 1, wherein the second switching IC has a video signal from the second detection unit and a video signal reproduced from the external video cassette recorder on both sides at a first contact operated by a control signal (AV / TUNER) The video signal from the servo driving system and the video signal input from the external video cassette recorder are inputted to both sides of the second contact which is operated by the control signal, 1 video signal processing device of a multi-TVCR which is output to the other side of the switching IC. 2. The microcomputer according to claim 1, wherein the third switching IC receives the control signals PB and V / T of the microprocessor, receives the video signals from the trap unit, the second detection unit, and the servo driving system, A video signal processing apparatus of a multi-TVCR in which a video signal is selectively output to a recorder for recording. ※ Note: It is disclosed by the contents of the first application.