KR20010064559A - Appararus for recording simultaneously two image of television video casette recoder - Google Patents

Abstract

PURPOSE: A simultaneous two-image recorder for a TVCR(combination TV and VCR) is provided to make it possible to record video signals input from two tuners simultaneously. CONSTITUTION: A microcomputer(17) outputs a control signal for selecting channel and video signal. A first and a second tuners(15,16) output a video signal corresponding to the selected channel. A video signal selection switch(18) selects one of the video signal output from the first and the second tuners(15,16) and displays it on the screen. A recorder/player(14) divides the video signal for the first and the second tuners(15,16) to a brightness signal and a color signal. Pre-amps(13,13') amplify the brightness signal and the color signal. Recording signal switches(11,12) switch the output signal of the pre-amps(13,13') and record it.

Description

TVAL's 2 Video Recorder {APPARARUS FOR RECORDING SIMULTANEOUSLY TWO IMAGE OF TELEVISION VIDEO CASETTE RECODER}

The present invention is to record two video signals at the same time. In particular, the present invention includes a recording head for a first tuner and a recording head for a second tuner having an angle of θ to simultaneously record video signals inputted through two tuners. It relates to a TV-serial two-image simultaneous recording device.

FIG. 1 is a block diagram of a conventional TVCR recording / reproducing apparatus. As shown in FIG. 1, a video signal recording / reproducing unit outputs FM-modulated video signals output from the VRC tuner 103. And amplifies the signal modulated by the video signal recording / reproducing section 104 to a recordable level and reproduces the signal recorded on the tape or the signal recorded on the tape to the video signal recording / reproducing section 104. A video signal selection switch 107 for selecting one of a preamplifier 105, a TV video signal output from the TV tuner 106, and a BC video signal output from the video signal recording / reproducing unit 104; And a video signal reproducing unit 108 for displaying the video signal selected above on the screen through the CRT monitor 109.

Looking at the prior art configured as described above is as follows.

At the time of recording, the VR video signal output from the BC tuner 103 is input from the video signal recording / reproducing unit 104 and FM-modulated to the preamplifier 105.

The preamplifier 105 then amplifies to a recordable level and writes it to tape.

At the time of reproduction, the signals read by the A-field recording head 101 and the B-field recording head 102 shown in Fig. 1 are amplified by the preamplifier 105 and sent to the video signal recording / reproducing section 104. .

Accordingly, the video signal recording / reproducing unit 104 transmits a V-CAL image signal to one input terminal of the video signal selection switch 107.

On the other hand, the TV video signal output from the TV tuner 106 is sent to the other input terminal of the video signal selection switch 107.

When the video signal selection switch 107 selects one of the VLC video signal and the TV video signal and transmits the selected video signal to the video signal reproducing unit 108, the video signal reproducing unit 108 transmits the selected video signal to the CRT monitor 109. Display on the screen.

That is, in the TV-C having two tuners (V-C tuner and TV-tuner), it is possible to view another channel while recording one channel.

However, in the prior art as described above, although it has two tuners (V tuner and TV tuner), only the video signals of the V tuner can be recorded and reproduced, and it is impossible to simultaneously record and reproduce the two channel video signals. There is a problem.

Accordingly, it is an object of the present invention to solve the conventional problems as described above is to provide a two-channel simultaneous image recording apparatus of the TV to enable simultaneous recording of two-channel video signal.

1 is a conventional video head configuration diagram.

2 is a block diagram of a conventional TV recording / reproducing apparatus.

3 is a video head configuration diagram of the present invention.

4 is a video track configuration diagram according to the present invention;

5 is a detailed view of the head azimuth according to the present invention.

Fig. 6 is a block diagram of a simultaneous recording device for two images of a television of the present invention.

Figure 7 is a block diagram of a playback device of the present TV.

***** Explanation of symbols for the main parts of the drawing *****

1-4: recording head 11,12: recording signal switching switch

13,14: recording signal preamplifier 15: first tuner

16: tuner 2 17: microcomputer

18: Video signal selection switch 22,23: Head selection switch

The present invention for achieving the above object is a microcomputer for outputting a control signal for channel selection and video signal selection, a first and a second tuner for outputting a video signal corresponding to the selected channel, and the first, first A video selection switch for selecting one of the video signals output from each of the two tuners to be displayed on the screen, and separating the video signals for the first and second tuners respectively output from the first and second tuners into luminance signals and color signals. A recording / reproducing section, a recording signal preamplifier for amplifying the luminance signal and the color signal separated from the first and second tuner video signals to a predetermined level, and four signals by switching the signals output from the preamplifier. And a recording signal switching switch for recording on tracks A, B and A ', B' using the head.

Hereinafter, with reference to the accompanying drawings in detail as follows.

FIG. 6 is a block diagram of the simultaneous recording device of the TV of the present invention. As shown therein, the first and second tuners 15 and 16 for selecting a corresponding channel and outputting a corresponding video signal are shown. And a microcomputer 17 for outputting a control signal for channel selection of the first and second tuners 15 and 16 and a video signal output from the first and second tuners 15 and 16. Is selected under the control of the microcomputer 17 and the video selection switch 18 to display on the screen, and the first and second tuner video output from the first and second tuners 15 and 16, respectively A recording / reproducing section 14 for dividing the signal into a luminance signal Y and a color signal C, and a recording signal preamplifier for amplifying the luminance signal Y and the color signal C separated in the above to a predetermined level. (13) and 13 'and the first tuner signal outputted from the preamplifier 13 are switched through the A track head 1 and the B track head 2. The recording signal switching switch 11 recorded on the tape and the second tuner signal output from the preamplifier 13 'are switched to tape through the A' track head 3 and the B 'track head 4; And a recording signal switching switch 12 for recording on the screen.

Referring to the operation and effect of the present invention configured as described in detail as follows.

FIG. 3 is a video head and configuration arrangement diagram used in the present invention, wherein 1 and 2 are recording heads of the first tuner, and are configured to have azimuths in the same direction as in FIG. Are the recording heads of the newly added second tuner and are arranged in the same azimuth direction as shown in FIG.

4 is a track configuration diagram of a video recording signal, 5 is an A video track of a first tuner recorded by a recording head of 1, and 6 is A ′ of a second tuner recorded by a recording head of 3 having angles of 1 and θ. It's a video track. Since the two tracks of 5 and 6 are recorded differently from each other in the opposite direction, crosstalk of adjacent tracks does not occur.

6 and 8 are tracks B of the first tuner and B 'tracks of the second tuner recorded in the same manner as 5 and 6, and the first tuner video signal is track A, the second tuner video signal is A', It will be recorded on the track B '.

Next, a process of simultaneously recording two channels based on FIG. 6 will be described.

The first tuner video signal output from the first tuner 15 is input to the recording / reproducing section 14, and is also input to one input terminal of the video signal selection switch 18.

In addition, the second tuner video signal output from the second tuner 16 is input to the recording / reproducing section 14, and also to the other input terminal of the video signal selection switch 18.

The channel selection tuned by the first tuner 15 and the second tuner 16 is made by the microcomputer 17.

The first tuner video signal and the second tuner video signal inputted to the video signal selector switch 18 are switched under the control of the microcomputer 17 and are controlled by the image reproducing unit 19 and the CRT monitor 20. Is displayed.

For example, when the video signal selection switch 18 selects the video signal for the first tuner and starts recording, the video signal for the first tuner is connected to the luminance signal Y through the luminance signal separator and the color signal separator of the recording / reproducing section 14. ) And the color signal (C), which are added by an adder and transferred to the recording signal preamplifier 13.

Accordingly, the recording signal preamplifier 13 is amplified to a recordable level and transferred to the recording signal switching switch 12.

At this time, when the recording signal switching switch 11 is turned on by the microcomputer 17, A, B tracks on the tape in the form of 6, 7 of Fig. 4 through the recording head (1) (2) shown in FIG. Is recorded.

On the other hand, the video signal for the second tuner tuned by the second tuner 16 is also separated into the luminance signal Y and the color signal C through the recording / reproducing section 14 and then through the recording signal preamplifier 13 '. The recording signal is transferred to the switch 12.

When the video signal for the second tuner is to be recorded at the same time, the microcomputer 17 turns on the recording signal switching switch 12.

As the recording signal switching switch 12 is turned on, it is recorded on the tape as A 'and B' tracks through the recording heads 3 and 4 in the form of 6 and 8 of FIG.

In this way, two video signals are simultaneously recorded on the tape.

A process of reproducing a video signal recorded as 5, 6, 7, and 8 on the tape shown in FIG. 4 will now be described with reference to FIG.

The recording heads 1 and 2 read the video signals of the A and B tracks, amplify them to a certain level in the recording amplifiers 21 and 22, and transfer them to the track selection switch 25.

Similarly, video signals of tracks A 'and B' are read from the recording heads 3 and 4, amplified to a predetermined level by the recording amplifiers 23 and 24, and transferred to another track selector switch 26.

At this time, when the track is selected by the microcomputer 17 and the track selection switches 25 and 26 are switched, the video signal selected by this switching is demodulated by the demodulators 27 and 28 to the original signal to select playback video. The switch 29 is provided.

Then, under the control of the microcomputer 17, the playback video selection switch 29 selects the playback signal for the first tuner or the playback signal for the second tuner and displays it through the image playback unit 19 and the CRT monitor 20. .

As described above, the first tuner recording head having the azimuth in the same direction and the second tuner recording head having the θ angle are provided to simultaneously record the video signal input through the first tuner and the second tuner.

As described in detail above, the present invention has the effect of simultaneously recording a video signal input through two tuners.

Claims (3)

One of a microcomputer outputting a control signal for channel selection and a video signal, a first and a second tuner outputting a video signal corresponding to a selected channel, and a video signal output from the first and second tuners, respectively. A video selection switch for selecting and displaying on the screen, a recording / reproducing unit for separating the first and second tuner video signals output from the first and second tuners into luminance signals and color signals, respectively, A and B tracks using four recording heads by switching between a recording signal preamp that amplifies the luminance signal and the color signal separated from the first and second tuner video signals to a predetermined level, and the signals output from the preamp. A TV real-time two-image simultaneous recording device comprising a recording signal switching switch for recording on tracks A 'and B', respectively. The apparatus of claim 1, wherein the recording heads recorded on tracks A and B have azimuth (AZIMUTH) in the opposite direction to the recording heads recorded on tracks A and B. The apparatus of claim 1, wherein the recording heads recorded on tracks A 'and B' have an angle? With the recording heads recorded on tracks A and B.