KR20000028239A - Method for reserving channel on tv/video cassette recorder - Google Patents

Method for reserving channel on tv/video cassette recorder Download PDF

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Publication number
KR20000028239A
KR20000028239A KR1019980046402A KR19980046402A KR20000028239A KR 20000028239 A KR20000028239 A KR 20000028239A KR 1019980046402 A KR1019980046402 A KR 1019980046402A KR 19980046402 A KR19980046402 A KR 19980046402A KR 20000028239 A KR20000028239 A KR 20000028239A
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South Korea
Prior art keywords
channel
tape
signal
reserved
tvcr
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KR1019980046402A
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Korean (ko)
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전봉관
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전주범
대우전자 주식회사
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Priority to KR1019980046402A priority Critical patent/KR20000028239A/en
Publication of KR20000028239A publication Critical patent/KR20000028239A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
    • H04N21/47214—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for content reservation or setting reminders; for requesting event notification, e.g. of sport results or stock market
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Strategic Management (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE: A method for reserving a channel on TVCR(TV/Video Cassette Recorder) is provided to reduce power consumption by detecting a broadcasting signal corresponding to a reserved channel, by detecting a broadcasting signal corresponding to a neighbor channel when the signal is not detected, or by intercepting power supply if a tape does not exist in a video deck as detecting whether the tape exists, when the broadcasting signal of the neighbor channel is not detected. CONSTITUTION: TVCR(TV/Video Cassette Recorder) detects a broadcasting signal corresponding to a reserved channel, detects a broadcasting signal corresponding to a neighbor channel, and intercepts power supply if a tape does not exist in a video deck when the broadcasting signal of the neighbor channel is not detected. A method for reserving a channel on the TVCR comprises the steps of: searching the neighbor channel in order if the broadcasting signal of the reserved channel is not detected, when the channel and time are reserved by a remote controller; detecting whether the tape is inserted in the video deck when the broadcasting signal of the neighbor channel is not detected; replaying the tape if the tape is inserted; and intercepting power supplied to the TVCR if the tape is not inserted.

Description

ＴＶＣＲ의 채널예약방법How to reserve a TV channel

본 발명은 TVCR의 채널예약방법에 관한 것으로서, TVCR에서 채널을 예약한 경우, 예약한 채널에 해당하는 방송신호를 검출하고, 검출되지 않으면 인접채널에 해당하는 방송신호를 검출하고, 인접채널의 방송신호도 없으면 데크부내의 테이프 유무를 검출하여 테이프가 없는 경우에는 전원이 차단되도록 하는 TVCR의 채널예약방법(A channel reservation method of TVCR)에 관한 것이다.The present invention relates to a channel reservation method of a TVCR. When a channel is reserved in a TVCR, a broadcast signal corresponding to a reserved channel is detected. If not, a broadcast signal corresponding to an adjacent channel is detected. The present invention relates to a channel reservation method of TVCR, which detects the presence or absence of a tape in a deck unit and shuts off power when there is no tape.

일반적으로, TVCR은 텔레비전과 VCR을 일체형으로 만든 것으로서, 하나의 전원공급기에 의해 전원이 공급되고 상기 TVCR을 제어하는 시스콘(System Control; SYSCON)과 TVCR 전체 시스템을 제어하는 타이머(Timer)에 의해 각 구성요소가 동작되고 있으며, 텔레비전 방송신호의 기록 및 재생, 다른 녹화 테이프의 녹화 및 재생, 시청하지 않는 다른 채널의 방송녹화, 예약녹화 및 부재시 녹화 등을 위해 사용하는 기기이다.In general, a TVCR is a unit of a television and a VCR, which is powered by a single power supply and is controlled by a system control (SYSCON) that controls the TVCR and a timer that controls the entire TVCR system. Each component is operated, and is a device used for recording and reproducing television broadcast signals, recording and reproducing other recording tapes, broadcasting recording of other channels not being watched, reserved recording, and absent recording.

상기와 같은 TVCR에서, 리모트컨트롤러를 이용하여 텔레비전의 채널 및 시간을 예약하는 경우, 상기 채널 및 시간데이타는 TVCR내에 구비된 메모리에 저장된 후, 이를 감지하는 타이머에 의해 상기 예약된 시간이 경과하는 경우, 예약 채널이 선국되어 디스플레이된다.In the TVCR as described above, when a channel and a time of a television are reserved by using a remote controller, the channel and time data are stored in a memory provided in the TVCR, and when the reserved time elapses by a timer for detecting the same. , The reserved channel is tuned and displayed.

그러나, 상기와 같이 예약된 채널이 선국되는 경우, 상기 채널에 해당하는 방송신호가 있는 경우에는 자동적으로 CRT를 통해 디스플레이되지만, 상기 채널에 해당하는 방송신호가 없는 경우에도 상기 CRT를 통해 무신호의 화면이 디스플레이되어, 이를 시청하는 시청자에게 눈의 피로감을 주게 됨과 더불어, 다른 채널로 전환되기 위해서는 수동으로 채널을 조작되어야 하는 조작상의 문제점이 있다.However, when the reserved channel is tuned as described above, if there is a broadcast signal corresponding to the channel, it is automatically displayed through the CRT, but even when there is no broadcast signal corresponding to the channel, no signal is transmitted through the CRT. A screen is displayed to give viewers eye fatigue, and there is an operational problem in that a channel must be manually operated in order to switch to another channel.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 사용자에 의해 채널이 예약된 경우, 상기 예약채널의 신호가 없으면 인접채널을 탐색하고, 상기 인접채널의 신호가 없으면 데크부내의 테이프 유무를 검출하여 테이프가 없는 경우, 전원공급을 차단함으로써, 채널이 자동전환되도록 하고, 전력소비를 줄일 수 있는 TVCR의 채널예약방법을 제공하는 데 있다.Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to search for an adjacent channel when there is no signal of the reserved channel when a channel is reserved by a user, and to detect a deck when there is no signal for the adjacent channel. The present invention provides a channel reservation method for a TVCR that detects the presence or absence of a tape in a department and automatically cuts off a power supply when there is no tape, thereby reducing power consumption.

상기한 본 발명의 목적을 달성하기 위한 발명의 기술적 사상은 TVCR에서 사용자에 의해 채널 및 시간이 예약되고, 상기 예약된 채널에 해당하는 방송신호의 유무는 동기신호의 유무로써 확인하고, 상기 동기신호가 검출되지 않는 경우, 상기 예약된 채널의 인접 채널부터 순차적으로 탐색되고, 상기 탐색된 인접 채널에 해당하는 방송신호의 유무도 동기신호의 유무로써 확인하고, 상기 동기신호가 검출되지 않는 경우, 데크부에 테이프가 삽입되어 있는지 검출하여 상기의 테이프가 삽입되어 있지 않은 경우, 전원공급이 차단되도록 함으로써 채널의 자동전환 및 전력 소비를 줄이는 것이다.The technical idea of the present invention for achieving the object of the present invention is that the channel and time is reserved by the user in the TVCR, the presence or absence of a broadcast signal corresponding to the reserved channel is confirmed by the presence of a synchronization signal, the synchronization signal If is not detected, the channel is sequentially searched from the adjacent channel of the reserved channel, and the presence or absence of a broadcast signal corresponding to the searched adjacent channel is also checked as the presence or absence of a synchronization signal, and if the synchronization signal is not detected, the deck By detecting whether a tape is inserted into the unit, when the tape is not inserted, the power supply is cut off, thereby reducing the channel automatic switching and power consumption.

도 1은 본 발명의 실시예에 따른 TVCR의 채널예약방법을 설명하기 위한 블록도.1 is a block diagram illustrating a channel reservation method of a TVCR according to an embodiment of the present invention.

도 2는 본 발명의 실시예에 따른 TVCR의 채널예약방법을 나타낸 흐름도.2 is a flowchart illustrating a channel reservation method of a TVCR according to an embodiment of the present invention.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

100 : 안테나 150 : 튜너부100: antenna 150: tuner

151 : 고주파 증폭부 152 : 혼합부151: high frequency amplifier 152: mixing unit

153 : 국부발진부 200 : IF증폭부153: local oscillation unit 200: IF amplification unit

250 : TV 영상처리IC 300 : CRT250: TV image processing IC 300: CRT

350 : VCR Y/C IC 400 : 헤드 앰프 IC350: VCR Y / C IC 400: Head Amplifier IC

450 : 비디오 헤드 500 : 오디오 처리IC450: video head 500: audio processing IC

550 : 오디오 헤드 600 : 동기검출부550: Audio head 600: Synchronous detector

700 : 타이머 750 : 시스콘700: timer 750: sheath cone

800 : 콘트롤 헤드 850 : 테이프 검출부800 control head 850 tape detection unit

900 : 데크부 950 : 리모트컨트롤러900 deck portion 950 remote controller

1000 : 전원공급부 S100 : 예약과정1000: power supply S100: reservation process

S150 : 제 1신호유무 판별과정 S200 : 디스플레이과정S150: first signal presence determination process S200: display process

S250 : 채널탐색과정 S300 : 제 2신호유무 판별과정S250: Channel search process S300: Second signal presence determination process

S350 : 테이프유무 판별과정 S400 : 테이프 재생과정S350: Tape presence determination process S400: Tape reproduction process

S450 : 전원공급 차단과정S450: Power supply cutoff process

이하에서는 상기의 목적을 달성하기 위한 실시예의 구성 및 작용에 대해서 첨부된 도면을 참조하여 설명하고자 한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment for achieving the above object will be described.

첨부된 도 1은 본 발명의 실시예에 따른 TVCR의 채널예약방법을 설명하기 위한 블록도이다.1 is a block diagram illustrating a channel reservation method of a TVCR according to an embodiment of the present invention.

도 1을 참조하여 설명하면, 본 발명은 안테나(100)로부터 수신되는 복합영상신호인 고주파 신호를 증폭하는 고주파증폭부(151), 상기 고주파증폭부(151)에서 증폭된 입력신호와 국부발진부(152)에서 국부발진주파수를 인가받아 중간주파수로 변환하는 혼합부(153) 및 상기 혼합부(153)에 주파수 변환용의 신호를 공급하는 국부발진부(153)로 구성되는 튜너부(150)과, 상기 튜너부(150)로부터 출력되는 복합영상신호인 중간주파신호를 증폭하는 IF증폭부(200)과,Referring to FIG. 1, the present invention provides a high frequency amplifier 151 for amplifying a high frequency signal, which is a complex video signal received from an antenna 100, an input signal amplified by the high frequency amplifier 151, and a local oscillator ( A tuner unit 150 including a mixing unit 153 for receiving a local oscillation frequency and converting it into an intermediate frequency and a local oscillating unit 153 for supplying a signal for frequency conversion to the mixing unit 153; An IF amplifier unit 200 for amplifying an intermediate frequency signal which is a composite video signal output from the tuner unit 150;

상기 IF증폭부(200)에서 출력되는 중간주파신호를 처리하여 CRT(300)에 출력하는 한편, 후술하는 VCR Y/C IC(350)로부터 플레이 백 복합영상신호를 인가받아 상기 CRT(300)에 출력하는 TV영상처리IC(250)과, 상기 TV영상처리IC(250)에서 복합영상신호를 인가받아 휘도신호는 FM 저반송파로 변조하고, 색신호는 저역변환을 하는 한편, 상기 VCR Y/C IC(350)에 접속된 헤드 앰프IC(400)으로부터 입력되는 변조된 휘도신호 및 색신호를 원래의 신호로 복조하여 만들어진 플레이 백 복합영상신호를 상기 TV영상처리IC(250)에 인가하는 VCR Y/C IC(350)과,The intermediate frequency signal output from the IF amplifier 200 is processed and output to the CRT 300, while receiving a playback composite video signal from the VCR Y / C IC 350, which will be described later, to the CRT 300. The output TV image processing IC 250 and the composite image signal from the TV image processing IC 250 modulate the luminance signal to the FM low carrier, and the low frequency conversion of the color signal, and the VCR Y / C IC. VCR Y / C which applies a playback composite video signal, which is generated by demodulating the modulated luminance signal and color signal input from the head amplifier IC 400 connected to the original signal, to the TV image processing IC 250. IC 350,

상기 VCR Y/C IC(350)에서 변조되어 인가되는 휘도신호 및 색신호를 증폭한 후 비디오 헤드(450)를 통해 테이프에 기록되도록 하는 한편, 상기 비디오 헤드(450)에 기록되어 있는 신호를 리드(READ)하여 증폭한 후 복조되도록 하는 헤드 앰프IC(400)과, 상기 VCR Y/C IC(350)에서 음성신호를 인가받아 오디오 헤드(550)를 통해 테이프에 기록되도록 하는 한편, 상기 오디오 헤드(550)를 통해 테이프에 기록되어 있는 신호를 리드하여 복조하는 오디오 처리IC(500)과,After amplifying a luminance signal and a color signal modulated by the VCR Y / C IC 350 and being recorded on a tape through the video head 450, a signal recorded in the video head 450 is read. A head amplifier IC 400 for amplifying and demodulating the signal, and receiving a voice signal from the VCR Y / C IC 350 so as to be recorded on a tape through an audio head 550. An audio processing IC 500 which reads and demodulates a signal recorded on a tape through a 550;

상기 VCR Y/C IC(350)에 접속되며, 콘트롤 헤드(800)를 통해 테이프의 콘트롤 트랙에 기록되어 있는 콘트롤 펄스를 인식함과 더불어, 재생시 상기 VCR Y/C IC(350)를 제어하며, 데크부(900)에 테이프가 삽입되어 있는지의 여부를 검출하는 테이프 검출부(850)로부터 검출신호를 인가받는 시스콘(700)과, 상기 튜너부(150)에서 출력되는 복합영상신호 중에 혼합된 동기신호를 검출하는 동기검출부(600)과,It is connected to the VCR Y / C IC 350, and recognizes the control pulse recorded in the control track of the tape through the control head 800, and controls the VCR Y / C IC 350 during playback. And a mixed image signal of the sheath cone 700 receiving the detection signal from the tape detection unit 850 for detecting whether the tape is inserted into the deck unit 900 and the composite video signal output from the tuner unit 150. A synchronous detection unit 600 for detecting a synchronous signal,

상기 동기검출부(600)의 검출신호를 인가받아 상기 튜너부(150), TV영상처리IC(250) 및 후술하는 전원공급부(950)에 제어신호를 인가하는 타이머(700)과, 채널 및 시간을 예약하는 리모트컨트롤러(950)과, 상기 예약된 채널 및 시간데이타를 저장하는 이이피롬(650)과, AC전원을 입력받아 TVCR내로 전원을 공급하는 전원공급부(1000)으로 이루어진다.A timer 700 for applying a control signal to the tuner 150, the TV image processing IC 250, and a power supply unit 950, which is described later, receives a detection signal from the synchronization detector 600, and a channel and time. A remote controller 950 to be reserved, an EPI 650 for storing the reserved channel and time data, and a power supply unit 1000 that receives AC power and supplies power to the TVCR.

상기와 같이 구성된 본 발명의 작용을 첨부된 도 2를 참조하여 설명하기로 한다.The operation of the present invention configured as described above will be described with reference to FIG. 2.

첨부된 도 2는 본 발명의 실시예에 따른 TVCR의 채널예약방법을 나타낸 흐름도로서, 사용자의 리모트컨트롤러(950) 조작에 의해 텔레비전의 채널 및 시간이 예약되는 예약과정(S100)과, 상기 예약과정(S100) 후 예약된 채널에 해당하는 복합영상신호가 수신되는 지의 여부가 판별되는 제 1신호유무 판별과정(S150)과, 상기 제 1신호유무 판별과정(S150)에서 예약 채널의 신호가 수신되는 경우, 디스플레이되는 디스플레이과정(S200)과,2 is a flowchart illustrating a channel reservation method of a TVCR according to an exemplary embodiment of the present invention, wherein a reservation process (S100) in which a channel and a time of a television are reserved by a user's remote controller 950 operation is performed, and the reservation process is performed. In operation S150, the first signal presence determination step (S150) determines whether a composite video signal corresponding to the reserved channel is received, and the signal of the reserved channel is received in the first signal presence determination step (S150). Case, the displayed display process (S200),

상기 제 1신호유무 판별과정(S150)에서 예약 채널의 신호가 수신되지 않는 경우, 인접 채널이 탐색되는 채널탐색과정(S250)과, 상기 채널탐색과정(S250)에서 탐색되는 채널에 해당하는 복합영상신호가 수신되는 지의 여부가 판별되는 제 2신호유무 판별과정(S300)과, 상기 제 2신호유무 판별과정(S300)에서 탐색된 채널의 신호가 수신되는 경우, 디스플레이되는 디스플레이과정(S200)과,When the signal of the reserved channel is not received in the first signal presence determination process (S150), a channel search process (S250) in which an adjacent channel is searched and a composite image corresponding to the channel searched in the channel search process (S250). A second signal presence determination step (S300) of determining whether a signal is received, a display process (S200) displayed when a signal of a channel searched in the second signal presence determination step (S300) is received, and

상기 제 2신호유무 판별과정(S300)에서 탐색된 채널의 신호가 수신되지는 경우, 테이프 데크부(900)에 테이프가 삽입되어 있는지의 여부가 판별되는 테이프 유무 판별과정(S350)과, 상기 테이프 유무 판별과정(S350)에서 테이프가 삽입되어 있는 경우, 상기 테이프가 재생되는 테이프 재생과정(S400)과, 상기 테이프 유무 판별과정(S350)에서 테이프가 삽입되어 있지 않는 경우, 전원공급이 차단되는 전원공급 차단과정(S450)으로 이루어진다.When the signal of the channel searched in the second signal presence determination step (S300) is received, whether or not the tape is inserted into the tape deck unit 900 is determined whether or not the tape (S350), and the tape When the tape is inserted in the presence or absence determination process (S350), the tape is played back when the tape is reproduced (S400), and when the tape is not inserted in the tape presence determination process (S350), the power supply is cut off the power supply Supply interruption process (S450) is made.

이하, 상기 제 1신호유무 판별과정(S150) 이후의 작용을 설명하면 다음과 같다.Hereinafter, the operation after the first signal presence determination process (S150) will be described.

우선, 사용자에 의해 리모트컨트롤러(950)에 구비되어 있는 채널 및 시간예약버튼(도시 안됨)이 조작되어 일정채널이 예약되는 경우, 상기 리모트컨트롤러(950)에서 발생되는 채널 및 시간설정신호는 TVCR의 전면부에 장착되어 있는 신호수신부(도시 안됨)를 통해 타이머(700)에 입력되고, 상기 타이머(700)는 이이피롬(650)에 기록인에이블신호를 인가하여 상기의 채널 및 시간설정신호를 저장하게 된다.First, when a certain channel is reserved by operating a channel and a time reservation button (not shown) included in the remote controller 950 by the user, the channel and time setting signal generated by the remote controller 950 is generated by the TVCR. It is input to the timer 700 through a signal receiver (not shown) mounted on the front part, and the timer 700 applies the write enable signal to the EPI 650 to store the channel and time setting signals. Done.

그리고, 상기 타이머(700)는 이이피롬(650)에 저장된 시간설정신호를 해당하는 시간이 경과되는 경우, 상기 튜너부(150)에 튜닝제어신호를 인가하여 사용자에 의해 예약된 채널이 선국되도록 한다.In addition, the timer 700 applies a tuning control signal to the tuner 150 when a time corresponding to the time setting signal stored in the EPI 650 is selected so that a channel reserved by the user is tuned. .

이 때, 상기 예약된 채널이 튜너부(150)의 선국작용에 의해 선국되고, 상기 선국된 채널에 해당하는 신호는 튜너부(150)를 거쳐 IF증폭부(200)로 출력된다. 여기서, 상기 튜너부(150)와 IF증폭부(200)의 사이에 접속되어 있는 동기검출부(600)는 상기 튜너부(150)에서 출력되는 신호 중에 혼합된 동기신호를 검출하게 된다.At this time, the reserved channel is tuned by the tuning operation of the tuner 150, and the signal corresponding to the tuned channel is output to the IF amplifier 200 through the tuner 150. Here, the synchronization detector 600 connected between the tuner unit 150 and the IF amplifier unit 200 detects a mixed synchronization signal among the signals output from the tuner unit 150.

그러나, 상기 동기검출부(600)에 의해 동기신호가 검출되지 않는 경우, 상기 동기검출부(600)에 접속되어 있는 타이머(700)는 이를 감지하여 상기 튜너부(150)에 튜닝제어신호를 다시 인가하여 상기 예약된 채널에 인접한 채널부터 차례로 탐색이 이루어지도록 한다.However, when the synchronization signal is not detected by the synchronization detection unit 600, the timer 700 connected to the synchronization detection unit 600 detects this and applies the tuning control signal to the tuner unit 150 again. The search is performed sequentially from the channel adjacent to the reserved channel.

상기 튜너부(150)는 타이머(700)의 제어신호에 따라 인접채널의 탐색을 하게 되고, 탐색된 채널은 상기한 바와 동일하게 상기 튜너부(150)와 IF증폭부(200)의 사이에 접속되어 있는 동기검출부(600)는 상기 튜너부(150)에서 출력되는 신호 중에 혼합된 동기신호를 검출하게 된다.The tuner unit 150 searches for an adjacent channel according to the control signal of the timer 700, and the found channel is connected between the tuner unit 150 and the IF amplifier unit 200 as described above. The synchronous detection unit 600 detects a mixed synchronous signal among the signals output from the tuner unit 150.

그러나, 상기 동기검출부(600)에 의해 동기신호가 검출되지 않는 경우, 상기 동기검출부(600)에 접속되어 있는 타이머(700)는 이를 감지하여 시스콘(750)에 테이프 검출제어신호를 인가하게 되고, 상기 시스콘(750)은 테이프 검출부(850)에 검출제어신호를 인가하게 된다.However, when the synchronization signal is not detected by the synchronization detection unit 600, the timer 700 connected to the synchronization detection unit 600 detects this and applies a tape detection control signal to the sheath cone 750. The sheath 750 applies the detection control signal to the tape detector 850.

상기 테이프 검출부(850)는 데크부(900)에 테이프가 삽입되어 있는 지의 여부를 검출하여 상기의 테이프가 삽입되어 있는 경우, 이를 감지하는 상기 시스콘(750)은 VCR Y/C IC(350)에 제어신호를 인가하여 비디오 헤드(450) 및 오디오 헤드(550)를 통해 상기 테이프에 기록된 영상신호 및 음성신호를 읽어 원래의 영상 및 음성신호로 복조되어 상기 CRT(300)를 통해 재생되도록 한다.The tape detection unit 850 detects whether the tape is inserted into the deck unit 900 and detects the tape when the tape is inserted. The sheath cone 750 detects whether the tape is inserted into the VCR Y / C IC 350. The control signal is applied to the video and audio signals recorded on the tape through the video head 450 and the audio head 550 to be demodulated into original video and audio signals and reproduced through the CRT 300. .

반면, 상기 데크부(900)에 테이프가 삽입되어 있지 않은 경우, 상기 시스콘(750)에 검출신호를 인가하게 되고, 상기 시스콘(750)은 타이머(700)에 데크부(900)에 테이프가 삽입되어 있지 않음을 나타내는 신호를 출력하게 된다.On the other hand, when no tape is inserted into the deck unit 900, the detection signal is applied to the sheath cone 750, and the sheath cone 750 tapes to the deck unit 900 at the timer 700. Outputs a signal indicating that is not inserted.

따라서, 상기 타이머(700)는 전원공급부(1000)에 전원공급 차단 제어신호를 인가하여 TVCR내부로 공급되는 전원이 차단되도록 한다.Accordingly, the timer 700 applies a power supply cutoff control signal to the power supply unit 1000 so that the power supplied to the inside of the TVCR is cut off.

이상의 설명에서 알 수 있는 바와 같이, 본 발명은 사용자에 의해 채널 및 시간이 예약되는 경우, 상기 예약채널의 방송신호가 없으면 예약채널의 인접채널부터 순차적으로 탐색하고, 상기 탐색된 인접채널의 방송신호가 없으면, 데크부내에 테이프가 삽입되어 있는지를 검출하며, 상기 테이프가 삽입되어 있는 경우 테이프가 재생되도록 하는 반면, 상기 테이프가 삽입되어 있지 않는 경우에는 TVCR내로 공급되는 전원이 차단되도록 함으로써, 채널이 자동전환되도록 하고, 전력소비를 줄일 수 있는 효과가 있다.As can be seen from the above description, when the channel and time are reserved by the user, the present invention sequentially searches from the adjacent channel of the reserved channel if there is no broadcast signal of the reserved channel, and broadcasts the searched adjacent channel. If none is present, it detects whether a tape is inserted into the deck, and if the tape is inserted, causes the tape to be played back. If the tape is not inserted, the power supplied to the TVCR is cut off. It is possible to switch automatically and reduce the power consumption.

Claims (2)

사용자의 리모트컨트롤러 조작에 의해 채널 및 시간을 예약할 수 있는 TVCR에 있어서,In TVCR which can reserve channel and time by user's remote controller operation, 상기 예약된 채널에 해당하는 방송신호가 검출되지 않는 경우, 상기 예약된 채널의 인접 채널부터 순차적으로 탐색되고, 상기 탐색된 인접 채널에 해당하는 방송신호가 검출되지 않는 경우, 데크부에 테이프가 삽입되어 있는지 검출되어 상기의 테이프가 삽입되어 있지 않은 경우, 전원공급이 차단되는 것을 특징으로 하는 TVCR의 채널예약방법.When a broadcast signal corresponding to the reserved channel is not detected, the adjacent channel of the reserved channel is sequentially searched, and when a broadcast signal corresponding to the searched adjacent channel is not detected, a tape is inserted into the deck part. And the power supply is cut off when the tape is not inserted and the tape is inserted. 청구항 1에 있어서, 상기 예약된 채널 및 인접 채널에 해당하는 방송신호의 검출은 동기신호를 검출하는 동기검출수단에 의해 이루어지는 것을 특징으로 하는 TVCR의 채널예약방법.The channel reservation method according to claim 1, wherein the detection of the broadcast signal corresponding to the reserved channel and the adjacent channel is performed by synchronization detection means for detecting the synchronization signal.
KR1019980046402A 1998-10-30 1998-10-30 Method for reserving channel on tv/video cassette recorder KR20000028239A (en)

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