KR0147657B1 - Screen automatic setting method of double/wide tv with double-vcr - Google Patents

Abstract

The present invention discloses a method for automatically setting a screen of a double-deck video tape recorder integrated double / wide television receiver. The method includes a first judging step of continuously determining whether an arbitrary channel has been selected, a broadcast searching step of moving the screen of the current channel to the left or right when the first judging step is satisfied, and searching for a broadcast signal of the selected channel; A second judging step of determining whether a broadcast signal exists in the tuned channel; a first screen display step of displaying a broadcast of the selected channel on a full screen of a television if the second judging step is satisfied; and a second judging step And a second screen displaying step of continuously displaying the broadcast of the current channel if not satisfied, and automatically determining the broadcast signal of the tuned channel. If the broadcast signal does not exist, the current screen is displayed to the user together. If there is a broadcast signal, the screen of the tuned channel is displayed and the user feels bored even for a while. There is an effect that prevents feel.

Description

How to set screen automatically with double deck video tape recorder integrated double / wide TV receiver

1 is a flowchart for explaining an automatic screen setting method of a double deck VTR integrated double / wide television receiver according to the present invention.

2 is a block diagram showing the configuration of a double deck VTR integrated double / wide television receiver.

3 is a block diagram showing a more specific configuration of the A / V signal selection unit shown in FIG.

4 is a block diagram showing another configuration example of the A / V signal selection unit shown in FIG.

5 is a block diagram showing a more detailed configuration of the D / W processing unit shown in FIG.

6 conceptually illustrates write and read operations of the first and second frame memories.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television (or TV) receiver, and in particular, a double deck video tape recorder (VTR) integrated double / wide (Double) that automatically sets and displays a screen when channel selection is performed. / Wide or D / W).

The double-deck VTR means a VTR having a structure in which two VTRs are integrated, and each VTR can perform a reproduction operation separately, and in particular, a so-called VTR recording signal reproduced in one VTR to the other VTR. It has the advantage of being able to perform copy function.

On the other hand, a double / wide TV receiver may display a video signal on a wide screen having an aspect ratio of 16: 9, and simultaneously split two wide screens from side to side to simultaneously display two video signals from different signal sources. A television receiver having a screen display method has the advantage of viewing a video signal reproduced from an external video reproducing apparatus such as a VTR or a laser disk player (LDP) at the same time as watching a television.

If the double deck VTR is electrically connected to each other via a double / wide TV and a cable, the video signal received from the television receiver and the video signal reproduced from the double deck VTR are simultaneously viewed or simultaneously with the received video signal. It can be easily assumed that various operations are possible, such as recording on a videotape or watching a signal reproduced from one videotape while simultaneously recording on the other videotape.

However, in the case of recording the video signal received from the television receiver via the VTR, first, the video signal to be recorded by connecting the external output terminal of the television receiver and the external input terminal of the VTR with a cable is operated. The channel to be received must be selected, and the VTR can be operated to perform the recording mode.

On the contrary, when a video signal reproduced by the VTR is to be viewed through a TV receiver, first connect the external output terminal of the VTR and the external input terminal of the television receiver, or connect the RF output terminal of the VTR and the antenna input terminal of the television receiver. You can operate the VTR in playback mode, and operate the TV receiver in external video signal reception mode or select channel 3 or 4.

Since the external I / O terminals of video devices are usually installed on the back of the body, in order to provide some electrical connection between them, it is necessary to take them out of the place of installation or to work on the back of the place of installation. This is no easy task for the user.

Even if there is some electrical connection between them, it is impossible to expect desirable results if the individual devices are not operated in the proper order according to the wishes. It requires skill.

In particular, in order to perform a variety of operations by electrically connecting a double / wide TV receiver and a double deck VTR that can process two video signals at the same time, more cables and heights are required when connecting a general television receiver and a VTR. Skilled operation is required.

The double deck VTR integrated double / white television receiver which has solved this problem has been developed by the present applicant, and a TV receiver having various functions has been developed.

On the other hand, when a television user selects a different channel while watching a channel, if there is no signal in the selected channel, a no-signal screen appears on a wide television screen, which makes the user feel bored.

An object of the present invention, when the channel selected at the time of channel selection to solve the above-mentioned boredom is no signal, to display the screen of the no-signal screen and the channel before the (PRE) on the screen at the same time, the signal is present in the channel The present invention provides a method for automatically setting a screen of a double deck VTR integrated double / wide television receiver which displays a screen of a selected channel on a full screen.

In order to achieve the above object, the automatic screen setting method of the double-deck VTR integrated double / wide television receiver according to the present invention includes a first judging step of continuously judging whether an arbitrary channel has been selected, and the first judging step is satisfied. When the screen of the channel is moved to the left or right, the broadcast searching step of searching for the broadcast signal of the selected channel, the second judging step of determining whether a broadcast signal exists in the tuned channel, and the second judging step is satisfied. A first screen display step of displaying the broadcast of the selected channel on the full screen of the television; and a second screen display step of continuously displaying the broadcast of the current channel if the second determination step is not satisfied. do.

Hereinafter, with reference to the accompanying drawings, the automatic screen setting method of the double deck VTR integrated double / wide television receiver according to the present invention will be described in detail as follows.

1 is a flowchart for explaining an automatic screen setting method of a double deck VTR integrated double / wide television receiver according to the present invention.

2 is a block diagram showing the configuration of a double deck VTR integrated double / wide television receiver. The antenna 20, the first tuner 24, the second tuner 28, the first demodulator 26 and the second demodulator are shown in FIG. A television signal receiver 22 comprising an demodulator 30, an A / V signal selector 32, a first comb filter (C / F: C / F below COM filter) 36, second C / A video signal processor 34 comprising an F (38), a D / W processor (40), a matrix (MATRIX) 42, and a cathode ray tube tube (CRT) actuator (44). The audio signal processor 48, the CRT 46, the left speaker 50, the loudspeaker 52, the double deck VTR controller 78, the double deck VTR 80, and the master controller 54 ) And a television receiver control unit 66.

FIG. 2 shows the first and second tuners 24 and 28 for generating an intermediate frequency processed video signal by receiving a broadcast signal modulated by a carrier wave introduced through an antenna 20. As shown in FIG. And first and second demodulators 26 and 30 for inputting an intermediate frequency processed video signal generated by the first and second tuners 24 and 28 to generate a television audio / video signal.

The video signal processor 34 may include first and second comb filters 36 and 38 for respectively inducing the reproduced audio / video signal from the A / V signal selector 32 and separating the output audio / video signal into a luminance / chromatic signal. The first and second luminance / chromatic signals output from the first and second comb filters 36 and 38 are introduced into a third luminance / chromatic signal by performing double / wide (D / W: D / W) processing. Matrix processing by injecting the third luminance / chromatic signal output from the D / W processing unit 40 and the D / W processing unit 40 to be output, and the RGB signal output from the selecting unit 72. And a matrix section 42 for generating an RGB signal.

The double deck VTR 80 shown in FIG. 2 generates tape audio / video signals, A1 and V1, which are reproduced from a video tape, or is output for recording audio / video signals from the A / V signal selector 32. FIG. And first and second video tape recorders (not shown) and a copy control unit (not shown) for inputting A2 and V2 into the video tape.

The audio / video signals output from the television signal receiver 22 and the double deck VTR 80 are provided to the A / V signal selector 32. The A / V signal selector 32 selectively combines a plurality of audio / video signals provided on the input side thereof to convert the reproduced video signal into the video signal selector 34, and converts the reproduced audio signal and the telephone audio signal into the audio signal processor. At 48, the audio / video signals for recording are output to the double deck VTR 80, respectively.

FIG. 3 is a block diagram showing a more specific configuration of the A / V signal selector 32 shown in FIG. 2. The video signal selector 34 and the audio signal selector 48 are shown in FIG.

The first and second television audio / video signals and the first and second tape audio / video signals input through the input terminals IN1 to IN4 are divided into video and audio signals to select the video signal selector 102 and the audio signal, respectively. It is input to the unit 104. The video and audio signal selection units 102 and 104 are controlled by the control signal C1 generated from the main control unit 60, and selectively combine them to output left and right playback video signals through the output terminals OUT1 and OUT2. The left and right recording video signals are output through OUT3 and OUT4, and the left and right audio signals are output through the output terminals OUT5 and OUT6, respectively.

In order to provide the versatility of the device, it is possible to additionally allow an externally provided audio / video signal or to allow an externally generated audio / video signal to be externally output.

4 is a block diagram showing another configuration example of the A / V signal selector 32 shown in FIG. 2, which includes an external input terminal 200, an external output terminal 202, a video signal selector 204, and An audio signal selector 206 is provided.

The apparatus shown in FIG. 4 further comprises extra audio / video signal inputs, which may be provided for incoming audio / video signals. As noted, the same number from more input signals Since the combined output of the output signal has many more cases, the number of bits of the audio / video selection signal must be increased.

The video signal processor 34 double / wide processes the left and right picture reproduction video signals provided from the A / V signal selector 32 and outputs them. In order to display two video signals simultaneously on one screen, it is necessary to match the horizontal and vertical scanning periods of the combined video signal with the horizontal scanning period of each video signal before combining. Here, it is assumed that the horizontal and vertical scanning periods of the two video signals to be combined are the same. Special treatment is required when the horizontal and vertical scan periods are different. This technology has been applied to NTSC / PAL, HD / NTSC converters, and the like.

The scan period of the combined video signal is adjusted using a memory. For this purpose, video signals are separated into luminance / color signals, digitally converted and recorded in a memory. By adjusting the read speed of the memory, the scanning period of the output image signal can be determined.

FIG. 5 is a block diagram showing a more detailed configuration of the D / W processing unit 40 shown in FIG. 2. The first and second A / D (analog / digital) converters 300 and 314, and the first and second are shown in FIG. Frame memories 308 and 318, first and second write address generators 306 and 316, read address generator 304, first and second digital / analog converters 312 and 320, left and right screen switching units 322 ) And a deflection portion 302. Reference numeral 310 denotes a CRT 46 shown in FIG.

The operation of the apparatus shown in FIG. 5 will be described in detail as follows.

The first and second recording address generators 306 and 316 generate recording addresses having recording speeds equal to the scanning speeds of the left and right picture video signals, respectively. The video signals digitally converted by the analog / digital converters 300 and 314 are recorded in the first and second frame memories 308 and 318, respectively. At this time, the recording speeds in the first and second frame memories 308 and 318 are the same as the scanning speeds of the left and right screen video signals, respectively.

The read address generator 304 generates a read address having a read speed corresponding to twice the scanning speed of the left video signal. Therefore, the read speeds of the first and second frame memories 308 and 31 8 correspond to twice the gaze speeds of the left and right video signal signals, respectively.

The main scanning period of the image signal is divided into the first half and the second half, the first half reads the video signal recorded in the first frame memory 308, and the second half reads the video signal recorded in the second frame memory 318. When each video signal is read at twice the recorded speed, the two video signals are combined and output as one video signal.

FIG. 6 conceptually illustrates write and read operations of the first and second frame memories 308 and 318. FIG. As shown by the solid line in FIG. 6, each video signal is separately recorded in the first and second frame memories 308 and 318, and the recording speed is the same as the scanning speed of each video signal. After the video signals are recorded in the first and second frame memories 308 and 318, they are sequentially read as shown by the dotted lines, but the read speed is twice the write speed.

Accordingly, the speed at which each video signal is recorded and the speed at which two recorded video signals are read in succession become the same, and a video signal in which the two video signals are combined can be obtained.

FIG. 5 illustrates switching of signals read from the first and second frame memories 308 and 318 in response to the control signal C2 output from the sub-control unit 70 shown in FIG. Inverts the left and right screens on the screen by changing the order.

The CRT driver 44 of FIG. 2 drives the CRT 46 by the RGB signal output from the video signal processor 34 to display an image signal.

The audio signal processor 48 surrounds the left and right screen audio signals provided from the A / V signal selector 32, performs speaker / headphone selection processing, echo processing and speaker driving, and transmits the processed signals to the left and right speaker 50, 52). Here, the audio signals corresponding to the video signals of the left and right screens are output through the left and right speakers 50 and 52, or the audio signals corresponding to the video signals of the left screen are output to the left and right speakers and the audio signals corresponding to the video signals of the right screen are output. Can be selected to output to the headphone output terminal. Then, the voice of the received talker is output.

The double deck VTR 80 provides tape audio / video signals reproduced in the first and second VTRs (not shown) to the A / V signal selector 32 or is provided by the A / V signal selector 32. Recording audio / video signals are recorded individually or simultaneously through respective VTRs (not shown), or audio / video signals reproduced in one VTR are recorded through the other VTR.

Here, the first VTR is the VTR of the VHS system, and the second VTR is the VTR of the 8mm system. Therefore, not only the 8mm tape, which is widely used in movie cameras, can be accommodated, but also the 8mm / VHS method can be easily changed.

The television receiver control section 66 responds to commands input by the operation of the key input section 58 or the remote control unit (or remote control unit) 56, and the first and second tuners 24 and 28 and the video signal processing section 34. ). The sub-control unit 70 of the television receiver control unit 66 generates the first and second tuner control signals C ₂₁ and C ₂₂ to control the tuning operation of the first and second tuners 24 and ₂₈ . By specifying different broadcast channels by each tuner, two channels can be watched simultaneously.

On the other hand, the television receiver control section 66 controls the video signal processing section 34 by generating the D / W control signal C2 and the left and right inversion signals REVERSE.

In the first ROM 68 of the television receiver control unit 66, a program necessary for controlling the television receiver is stored. The sub-control unit 70 performs a control operation by a program recorded in the first ROM 68 and generates a text signal for the user interface through the first OSD 74.

The selector 72 selects one of the OSD signal generated by the first OSD 74 or the OSD signal generated by the second OSD 64 of the master controller 54 to select the matrix unit 42 of the video signal processor 34. To provide. The CRT driver 44 inputs a signal in which an OSD signal and an RGB signal are superimposed, and drives the CRT 46.

The master control unit 54 controls the television receiver control unit 66, the double-deck VTR control unit 78, and A so that a predetermined operation is performed in accordance with an operation command input through the key input unit 58 or the remote control unit 56. The / V signal selector 32 is controlled.

In the second ROM 62 of the master control unit 54, programs necessary for various types of control are stored. The main controller 60 performs a control operation by a program recorded in the second ROM 62, and outputs a text signal for the user interface to the selector 72 through the second OSD 64.

In such a double deck video tape recorder integrated double / wide television receiver, a method of automatically setting the screen of the double deck video tape recorder integrated double / wide television receiver according to the present invention will be described in detail.

When there is a channel selection from the remote controller 56 or the key input unit 58 shown in FIG. 2, the main control unit 60 detects this and outputs a channel selection request signal to the sub-control unit 70. The sub-control unit 70 continuously checks whether the channel selection request signal is input from the main control unit 60 of the master control unit 54 (step 10), and moves the current screen to the left or right when step 10 is satisfied. For this purpose, the control signal C2 is output to the double wide processor 40 of the video signal processor 34. The selection unit (not shown) of the double wide processing unit 40 inverts the current screen to the left or right in response to the control signal C2, and the first and second tuners of the TV signal receiving unit 22 for the channel desired by the user. (24 and 28) control via the control signal, C ₂₁ , C ₂₂ to tune to the broadcast (step 12).

After the twelfth step, the main controller 60 checks whether a broadcast signal exists in the selected channel (step 14).

If there is no broadcast signal, the main controller 60 controls the sub controller 70 so that the sub controller 70 controls the video signal processor 34 through the control signal C2. The video signal processor 34 processes the signal to display only the current screen on the CRT 46 in response to the control signal C2, and outputs the signal to the CRT driver 44 (step 16). When the fourteenth step is satisfied, that is, when a broadcast signal exists in the selected channel, the sub controller 70 controls the video signal processor 34 to display the broadcast of the selected channel on the entire CRT 46 ( Step 18).

As described above, the automatic screen setting method of the double-deck video tape recorder integrated double / wide television receiver according to the present invention is performed when the user selects another channel to watch the screen of another channel while watching the screen of one channel. If there is a broadcast signal, if the broadcast signal exists, it displays the broadcast of the selected channel on one screen.If there is no broadcast signal, the screen of the current channel is not displayed on the left or right screen. By displaying as a signal screen and zooming, there is an effect that the user does not feel bored even for a while.

Claims (1)

A method for automatically setting a screen of a double deck video tape recorder integrated double / wide television receiver, comprising: a first judging step of continuously determining whether an arbitrary channel is selected; A broadcast searching step of moving the screen of the current channel to the left or right and searching for a broadcast signal of the selected channel if the first determination step is satisfied; A second judging step of determining whether a broadcast signal exists in the tuned channel; A first screen display step of displaying the broadcast of the selected channel on the full screen of the television when the second determination step is satisfied; And a second screen display step of continuously displaying the broadcast of the current channel if the second determination step is not satisfied.