KR950016262A - TV broadcasting signal receiver and receiving method - Google Patents

TV broadcasting signal receiver and receiving method Download PDF

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Publication number
KR950016262A
KR950016262A KR1019930025189A KR930025189A KR950016262A KR 950016262 A KR950016262 A KR 950016262A KR 1019930025189 A KR1019930025189 A KR 1019930025189A KR 930025189 A KR930025189 A KR 930025189A KR 950016262 A KR950016262 A KR 950016262A
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KR
South Korea
Prior art keywords
signal
secam
output
unit
polarity
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Application number
KR1019930025189A
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Korean (ko)
Inventor
백재헌
Original Assignee
이헌조
엘지전자 주식회사
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Application filed by 이헌조, 엘지전자 주식회사 filed Critical 이헌조
Priority to KR1019930025189A priority Critical patent/KR950016262A/en
Publication of KR950016262A publication Critical patent/KR950016262A/en

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Abstract

본 발명의 텔레비젼 방송신호 수신장치 및 수신방법은 SECAM-L 및 SECAM-L'방식의 텔레비젼 방송신호를 정상으로 수신하여 영상신호 및 음성신호를 출력할 수 있도록 한 것으로서, 종래에는 수신하는 채널이 VHF하위밴드의 채널일 경우에 SECAM-L'방식으로 인식하고, 그 이외의 채널일 경우에는 SECAM-L 방식으로 인식하여 방송신호를 수신하므로 VHF하위밴드에 있는 SECAM-L방식의 방송신호를 수신할 경우에는 시스템에러가 발생하여 영상 및 음성이 출력되지 않았다.The apparatus and method for receiving a television broadcast signal according to the present invention allow the TV broadcast signal of the SECAM-L and SECAM-L 'types to be normally received to output a video signal and an audio signal. If the channel of the lower band is recognized by the SECAM-L 'method, and other channels are recognized by the SECAM-L method to receive the broadcast signal, it is possible to receive the SECAM-L type broadcast signal in the VHF lower band. In this case, a system error occurred and video and audio were not output.

본 발명은 동기신호의 극성과, 영상신호 및 음성신호의 출력여부로 SECAM-L 또는 SECAM-L'방식인지를 판별하고, 판별결과에 따라서 발진부의 발진 주파수를 제어함으로서 SECAM-L 및 SECAM-L'방식에 관계없이 텔레비젼 방송신호를 정상으로 수신 및 영상신호와 음성신호를 출력할 수 있다.The present invention determines whether the SECAM-L or SECAM-L 'method is applied to the polarity of the synchronization signal and whether the video signal and the audio signal are output, and controls the oscillation frequency of the oscillator according to the determination result. Regardless of the method, the television broadcast signal can be received normally and the video and audio signals can be output.

Description

텔레비젼 방송신호 수신장치 및 수신방법TV broadcasting signal receiver and receiving method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 수신장치의 구성을 보인 회로도,1 is a circuit diagram showing the configuration of a conventional receiver;

제2도는 본 발명의 수신장치의 구성을 보인 회로도.2 is a circuit diagram showing the configuration of the receiving device of the present invention.

제3도는 본 발명의 수신방법을 보인 신호 흐름도.3 is a signal flow diagram showing a receiving method of the present invention.

Claims (3)

방송신호의 수신을 제어하는 마이콤(11)과, 안테나(ANT11)의 수신신호에서 상기 마이콤(11)의 제어에 따라 선택된 하나의 방송신호를 튜닝하는 튜너부(12)와, 상기 튜너부(12)의 출력신호를 IF증폭하고 영상신호를 검파하는 IF증폭/영상검파부(13)와, 상기 마이콤(11)의 제어로 스위치(SW11)가 접속 및 개방됨에 따라 32.4㎒또는 38.9㎒로 선택적으로 발진하여 상기 IF증폭/영상검파부(13)로 출력하는 발진부(14)와, 상기IF증폭/영상검파부(13)의 출력신호에서 동기신호의 극성을 판별하여 상기 마이콤(11)에 입력시키는 동기극성 판별부(16)와, 상기 IF증폭/영상검파부(13)의 출력신호에서 영상신호의 유무를 판별하여 상기 마이콤(11)에 입력시키는 SECAM인식부(17)와, 상기 IF증폭/영상검파부(13)의 출력신호를 AM복조하여 음성신호를 검출하는 AM복조부(18)와, 상기 AM복조부(8)의 출력신호를 증폭하는 음성증폭부(19)와, 상기 AM복조부(18)의 출력신호에서 음성신호의 유무를 판별하여 상기 마이콤(11)에 입력시키는 음성출력 인식부(20)를 구비하고, 상기 마이콤(11)은 동기극성 판별부(16)가 동기신호의 극성을 플러스로 판별한 상태에서 SECAM인식부(17)및 음성출력 인식부(20)의 출력신호로 SECAM-L 또는 SECAM-L'방식인지를 판별하여 상기 스위치(SW1)의 동작을 제어하게 구성함을 특징으로 하는 텔레비젼 방송신호 수신장치.A microcomputer 11 for controlling the reception of a broadcast signal, a tuner unit 12 for tuning one broadcast signal selected under the control of the microcomputer 11 from the reception signal of the antenna ANT 11 , and the tuner unit ( IF amplifying the output signal of 12) and detecting the video signal, the IF amplification / video detection unit 13 and the switch (SW 11 ) under the control of the microcomputer 11 to 32.4MHz or 38.9MHz The oscillator 14 selectively oscillates and outputs the synchronization signal from the output signal of the IF amplifier / image detector 13 to the IF amplifier / image detector 13 to determine the polarity of the synchronization signal. A synchronous polarity determining unit 16 to input an input, a SECAM recognition unit 17 which determines whether an image signal is present in the output signal of the IF amplification / image detecting unit 13, and inputs it to the microcomputer 11; An AM demodulator 18 for AM demodulating the output signal of the amplification / image detector 13 to detect an audio signal, and the AM demodulator 8 A voice amplification unit 19 for amplifying an output signal of the voice signal and a voice output recognition unit 20 for determining the presence or absence of a voice signal from the output signal of the AM demodulation unit 18 and inputting it to the microcomputer 11. The microcomputer 11 outputs SECAM-L or SECAM- as output signals of the SECAM recognition unit 17 and the voice output recognition unit 20 in a state in which the synchronization polarity determination unit 16 determines the polarity of the synchronization signal to be positive. And controlling the operation of the switch (SW 1 ) by determining whether the L 'method is used. 동기신호의 극성을 판단하는 제1과정과, 상기 제1과정에서 동기신호의 극성이 마이너스일 경우에 수신 방송신호의 방식이 SECAM-L 또는 SECAM-L'이외의 방식으로 판단하는 제2과정과, 상기 제1과정에서 동기신호의 극성이 플러스일 경우에 영상신호 및 음성신호의 출력여부로 SECAM-L 또는 SECAM-L'방식을 판별하여 발진주파수를 제어하는 제3과정으로 제어됨을 특징으로 하는 텔레비젼 방송신호 수신방법.A first process of determining the polarity of the synchronization signal, and a second process of determining the method of the received broadcast signal by a method other than SECAM-L or SECAM-L 'when the polarity of the synchronization signal is negative in the first process; And controlling the oscillation frequency by determining SECAM-L or SECAM-L 'method according to whether the video signal and the audio signal are outputted when the synchronization signal is positive in the first process. TV broadcast signal reception method. 제2항에 있어서, 제3과정은, 영상신호 및 음성신호가 출력될 경우에 수신방송신호의 방식을 SECAM-L방식으로 판단하고, 영상신호 및 음성신호가 출력되지 않을 경우에 수신방송신호의 방식을 SECAM-L'방식으로 판단하는 것을 특징으로 하는 텔레비젼 방송신호 수신방법.The method of claim 2, wherein the third process determines that the received broadcast signal is a SECAM-L method when the video signal and the audio signal are output, and the received broadcast signal is not output when the video signal and the audio signal are output. The television broadcast signal receiving method, characterized in that the system determines the SECAM-L 'method. ※ 참고사항: 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the original application.
KR1019930025189A 1993-11-25 1993-11-25 TV broadcasting signal receiver and receiving method KR950016262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930025189A KR950016262A (en) 1993-11-25 1993-11-25 TV broadcasting signal receiver and receiving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930025189A KR950016262A (en) 1993-11-25 1993-11-25 TV broadcasting signal receiver and receiving method

Publications (1)

Publication Number Publication Date
KR950016262A true KR950016262A (en) 1995-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930025189A KR950016262A (en) 1993-11-25 1993-11-25 TV broadcasting signal receiver and receiving method

Country Status (1)

Country Link
KR (1) KR950016262A (en)

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