KR20000004026A - Method of simultaneously recording a main and a subsidiary screens of a tvcr having a pip function - Google Patents

Abstract

PURPOSE: A method of simultaneously recording a main and a subsidiary screens of a TVCR having a PIP function is provided to enhance a user's convenience. CONSTITUTION: The method comprises steps of: providing a power to the TVCR with a remote controller(S100); determining whether the main picture is recorded or the main and the subsidiary pictures are recorded(S200); controlling, in case that the main and the subsidiary pictures are recorded, a mixing switching unit to provide the mixed signal to the VCR(S400); recording the mixed signal(S500). Thereby, it is possible to record the both pictures in PIP function.

Description

Simultaneous recording of main and sub picture of TVC with PI function

According to the present invention, a method for recording main and sub pictures simultaneously of a TVCR having a PIP function for simultaneously recording a PIP main and sub picture during TVCR recording in a TVCR having a PIP function. on TVCR having function of PIP).

In general, the TVCR is made of a TV (TELEVISION) and VCR (VIDEO CASSETTE RECORDER) as an integrated unit, and the system and the entire system of the TVCR (SYSTEM CONTROL; SYSCON) that is powered by a single power supply and controls the VCR. Each component is operated by the controlling timer (TIMER), and is used for recording and playing back TV broadcast signals, recording and playing back other recording tapes, broadcasting recording of other channels that are not watched, scheduled recording, and absent recording. In the case of recording on a recording tape, an AC bias method with low noise is adopted since there is no residual magnetic field due to a bias magnetic field even in the absence of a signal at present, and the recording of an audio signal has a frequency range of 20-20000 Hz. The AC bias method is performed because it is relatively narrow to a degree and does not have to be a problem in phase relations. However, the frequency modulation (FM) recording method has been adopted for recording video signals because its frequency range is wide, about 0-4 MHz, and strict phase characteristics are required to faithfully reproduce waveforms.

On the contrary, during reproduction, the recorded magnetic tape is driven while being connected to the gap of the magnetic head, and the signal read by the magnetic head is amplified and processed and reproduced through the water pipe and the speaker.

A PIP function may be provided in the TVCR as described above. The PIP function of the TVCR having the PIP function will be described with reference to FIG. 1 as follows.

1 is a schematic block diagram of a typical PIP television.

Referring to FIG. 1, a television having a general PIP function is used for separating and tuning a main picture and a sub picture from an antenna 1 for receiving a plurality of broadcast signals and a broadcast signal input from the antenna 1. Tuning of the main tuner unit 2 and the sub tuner unit 5, the main video signal processing unit 3 for image processing the broadcast signals selected from the main tuner unit 2, and the sub tuner unit 5 described above. A PIP signal processor 6 for sub-processing the broadcast signal, a switching unit 7 for adding the output signal of the PIP signal processor 6 to the main video signal processor 3, and the main A microcomputer 8 for supplying control signals required for the tuner unit 2, the sub-tuner unit 5, the main video signal processing unit 3, the switching unit 7 and the PIP signal processing unit 6, and the main It consists of a CRT (4) for displaying a video signal output from the video signal processing section (3).

Referring to the operation of implementing a multi-screen by the PIP television as described above are as follows. That is, when the user selects a multi-screen using a remote controller or the like, the microcomputer 8 recognizes the multi-screen signal and applies the multi-screen signal to the PIP signal processor 6, and the main video signal processor 3 ) Outputs an OSD signal corresponding to the number of multiple screens superimposed with the main video signal. On the other hand, the video signal of the sub-screen output from the PIP signal processing section 6 is displayed in the OSD area superimposed on the main video signal. Through the above process, the main screen and the sub screen selected by the user are displayed on one television.

In the TVCR having the PIP function as described above, during screen recording, the user selects and records a program corresponding to a desired channel from a main screen and a sub-screen. If a program that a user wants to record unexpectedly is output from a screen other than the selected screen when recording as described above, there is a problem in that the recording screen is released and the program is recorded or passed as it is.

The present invention has been made to solve the above problems, and an object of the present invention is to record the main screen and the sub-screen at the same time, the image of the main video processing means mixed with the main screen video signal and the sub-screen video signal The present invention provides a method for simultaneously recording a main and sub picture of a TVCR having a PIP for simultaneously receiving a signal and applying the same to a VCR recording means.

1 is a schematic block diagram of a typical PIP television

2 is a block diagram illustrating a method of simultaneously recording a main and sub picture of a TVCR having a PIP function;

3 is a flowchart illustrating a method of simultaneously recording main and sub screens of a TVCR having a PIP function;

<Description of the symbols for the main parts of the drawings>

10: antenna 15: main tuner circuit

20: sub-tuner circuit portion 25: switching unit

30: PIP signal processor 35: main video signal processor

40: microcomputer 45: CRT drive unit

50: CRT 55: VCR recording / playback section

60: remote controller

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment for achieving the above object will be described.

2 is a block diagram for explaining a main and sub picture simultaneous recording method of a TVCR having a PIP function.

Referring to Figure 2, the present invention is a high frequency signal received through the antenna 10 to tune the channel for display on the main screen, the high frequency amplification process of the composite video signal of the tuned channel and the channel is oscillated by tuning A main tuner circuit unit 15 for converting and amplifying to an intermediate frequency by mixing with an oscillation frequency, and a subtuner for selecting and converting a channel to be displayed on a sub-screen among the high frequency signals received through the antenna 10, and converting and amplifying to an intermediate frequency A switching function connected to the circuit unit 20 and the main tuner circuit unit 15 so that the composite video signal applied from the main tuner circuit unit 15 is applied to the PIP signal processing unit 30 or the main image signal processing unit 35. And a switch for applying the selected video signal to the mixing switching unit 65 when the user switches the recording button using the remote controller 60. The switch unit 25 is connected to the sub-tuner circuit unit 20 and the switching unit 25 to mix the composite video signal applied from the sub-tuner circuit unit 20 and the switching unit 25. PIP signal processing unit 30 to be applied to the main video signal processing unit 35 through the composite video signal corresponding to the channel selected by the main tuner circuit unit 15 and the PIP composite video signal from the switching unit 25 When connected to the main video signal processing unit 35 and the switching unit 25 and the main video signal processing unit 35 to be displayed on the CRT (50) after being subjected to the demodulation process, the user to record only the main screen The video signal output from the switching unit 25 is switched to the VCR recording / replaying unit 55, and when the user wants to simultaneously record the main and sub screens, the main and sub mixtures output from the main video signal processing unit 35 are mixed. Switching the video signal to the VCR recording / playback section 55 The mixing switch unit 65, the main tuner circuit unit 15, the sub tuner circuit unit 20, the switching unit 25, the PIP signal processing unit 30, the main video signal processing unit 35, and the mixing switching unit 65. And the composite video signal applied to the mixing switch unit 65 to simultaneously record the main screen or the main and sub-screen according to the recording option selected by the remote controller 60 when the program is recorded. A microcomputer 40 for controlling the VCR recording / reproducing unit 55 and a CRT drive for driving the CRT 50 to display the video signal output from the main video signal processing unit 35 on the CRT 50. 45, a CRT 50 connected to the CRT drive 45 to display an image signal applied from the CRT drive 45, and mixing switching under the control of the microcomputer 40 when the user records a program. A VCR recording / reproducing section 55 in which the video signal applied to the section 65 is recorded; It consists of a remote controller 60 for the user to switch between selecting the main screen recording or simultaneous main and sub-screen recording during television recording.

Referring to Figure 2 the operation of the present invention configured as described above is as follows.

Referring to FIG. 2, the high frequency signal received through the antenna 10 is selected as a constant channel by the main tuner circuit 15 and the sub tuner circuit 20, and is converted into an intermediate frequency and amplified. The main composite video signal applied by the main tuner circuit unit 15 is applied to the switching unit 25 under the control of the microcomputer 40, and the sub composite video signal applied by the sub tuner circuit unit 20 is the microcomputer 40. ) Is applied to the PIP signal processor 30 under the control of. The switching unit 30 applies the main composite video signal to the PIP signal processing unit 30 and is combined with the sub-composite video signal applied to the PIP signal processing unit 30 when the multi-screen output is performed. Is processed as a PIP video signal. The PIP signal processing unit 30 is applied to the main video signal processing unit 35 through the switching unit 25 to output the PIP video signal combined with the sub screen and the main screen to the screen under the control of the microcomputer 40. do. The main video signal processor 35 applies the PIP video signal to the CRT drive 45 to drive the CRT 50 to display the screen. In addition, if the user wants to simultaneously record the main and sub-screens while watching, the corresponding button is input using the remote controller 60. When the main and sub-picture simultaneous recording commands are applied to the microcomputer 40, the microcomputer 40 controls the mixing switching unit 65 connected to the main video signal processing unit 35 to control the main video signal processing unit. The main and sub picture mixed video signals applied at 35 are switched to the VCR recording / reproducing section 55 to enable simultaneous recording of the main and sub picture.

The operation of the simultaneous video recording method of the main and sub picture of the TVCR having the PIP function in the above process will be described with reference to the detailed flowchart.

3 is a flowchart illustrating a method of simultaneously recording main and sub picture of a TVCR having a PIP function.

Referring to FIG. 3, the user turns on using the remote controller 60 in the TVCR having the PIP function (S100).

If the TVCR is turned on in step S100, the user determines whether to record the main picture or the main and sub-pictures simultaneously (S200).

According to the result determined in step S200, if the main screen is to be recorded, the microcomputer 40 controls the mixing switching unit 65 to output the main screen video signal output from the switching unit 25 to the VCR recording / reproducing unit 55. (S300).

According to the result determined in step S200, if the main and sub-pictures are to be recorded simultaneously, the microcomputer 40 controls the mixing switching unit 65 to output the main and sub-screen mixed video signals output from the main video signal processing unit 35. To the VCR recording / reproducing unit 55 (S400).

When the video signal is switched to the VCR recording / reproducing unit 55 in steps S300 and S400, the VCR records the video signal (S500).

Through all the above processes, the main and sub picture simultaneous recording method of the TVCR having the PIP function is implemented as the present invention intends.

As can be seen from the above description, in the TVCR having a PIP function, a main screen video signal and a sub-screen video signal are mixed so that a main screen and a sub-screen displayed on a television can be simultaneously recorded. Switching means for receiving the video signal of the main video processing means as it is applied to the VCR recording means to record the main and sub-picture at the same time, it is possible to record two screens at the same time, not just one screen.

Claims (2)

In a TVCR with a PIP function, In step S100, the TVCR is turned on by the user using the remote controller 60 in the TVCR having the PIP function. When the TVCR is turned on in the TVCR-on process, the screen recording process (S200) for determining whether to record the main screen or the main and sub-screens simultaneously; The screen selection switching process of switching the main screen video signal for the main screen and the main and sub-screen mixed video signals for the main screen and the sub-screen mixed video to the VCR recording / reproducing unit 55 according to the result determined in the screen recording determination process. (S300, S400), When the video signal is switched to the VCR recording / reproducing unit 55 in the screen selection switching process, the main and sub-pictures of the TVCR having the PIP function including the recording process (S500) in which the VCR records the video signal simultaneously. How to record. The method of claim 1, wherein the screen selection switching process According to the result determined in the screen recording process (S200), if the main screen is to be recorded, the microcomputer 40 controls the mixing switching unit 65 to record the main screen video signal output from the switching unit 25 in the VCR recording. Main screen switching process (S300) for switching to / playback unit 55, According to the result determined in the screen recording determination process (S200), if the main and sub-screens are to be recorded simultaneously, the microcomputer 40 controls the mixing switching unit 65 to output the main and output signals from the main video signal processing unit 35, A main and sub picture simultaneous recording method of a TVCR having a PIP function, comprising: a main and sub picture switching system (S400) for switching a sub picture mixed video signal to a VCR recording / reproducing unit (55).