KR850008080A - Multi system tv receiver - Google Patents

Multi system tv receiver Download PDF

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Publication number
KR850008080A
KR850008080A KR1019850003525A KR850003525A KR850008080A KR 850008080 A KR850008080 A KR 850008080A KR 1019850003525 A KR1019850003525 A KR 1019850003525A KR 850003525 A KR850003525 A KR 850003525A KR 850008080 A KR850008080 A KR 850008080A
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KR
South Korea
Prior art keywords
frequency
signal
phase detector
television
channel change
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KR1019850003525A
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Korean (ko)
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KR900000126B1 (en
Inventor
도미오 가도오
Original Assignee
사에끼 아끼라
샤아프 가부시기 가이샤
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Publication of KR850008080A publication Critical patent/KR850008080A/en
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Publication of KR900000126B1 publication Critical patent/KR900000126B1/en

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    • 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
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

내용 없음No content

Description

다중 시스템 텔레비젼 수신기Multi system tv receiver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 서브캐리어 발생회로를 표시하는 회로도.1 is a circuit diagram showing a subcarrier generating circuit according to the present invention.

제2도는 본 발명의 양호한 실시에 따른 서브캐리어 발생회로와 그의 관련된 부품을 표시하는 회로도.2 is a circuit diagram showing a subcarrier generating circuit and its related components in accordance with a preferred embodiment of the present invention.

제4도는 본 발명에 따른 서브캐리어 발생회로의 수정을 표시하는 블록도.4 is a block diagram showing modification of a subcarrier generation circuit according to the present invention.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

(3) : 저주파 통과 필터, (4) : 전압제어발진기, (5a),(5b) :수정진동기, (6) : 스위칭회로, (7) : 위상검출기, (8) : 플립플롭, (12) : 커패시터 (13) : 스위치, (14) : 채널선택기, (15) : 펄스발생기, (17) : 커패시티, (18) : 스위치, (19) : 대역필터, (23) : 유지회로, (26) : SECAM회로, (27) : PAL/NTSC 검출기, (28) : 텔레비젼 신호검출기, (30) : 음향트랩, (32) : 비데오트랩, (33) : 복조기, (35) : SECAM소기(KILLER).(3): low pass filter, (4): voltage controlled oscillator, (5a), (5b): quartz crystal, (6): switching circuit, (7): phase detector, (8): flip-flop, (12 ): Capacitor (13): Switch, (14): Channel selector, (15): Pulse generator, (17): Capacity, (18): Switch, (19): Band filter, (23): Holding circuit, (26): SECAM circuit, (27): PAL / NTSC detector, (28): TV signal detector, (30): acoustic trap, (32): video trap, (33): demodulator, (35): SECAM device (KILLER).

Claims (5)

PAL 시스템, SECAM 시스템 및NTSC 시스템의 텔레비젼 신호를 수신하게 적용되는 다중시스템 텔레비젼 수신기가 전압제어발기기(4)와 다른 주파수의 발진을 위하여 상기 발진기에 결합되는 수정진동기(5a,5b)를 포함하는 APC루우프와, 상기 발진기로부터의 발진신호와 텔레비젼 신호의 버어스트 신호간의 위상차를 검출하는 위상검출기(7)와, 상기 위상검출기로부터 산출된 신호에 의하여 제어되는 플립플롭(8)과, SECAM 시스템용색 소거신호를 발생하는 SECAM 소거(35)와, 요구된 주파수의 발진을 실행하기 위한 진동소자의 하나를 선택하기 위하여 상기 소거회로와 플립플롭회로에 의하여 제어되는 스위칭회로(6)와를 가지는 것을 특징으로 하는 다중시스템 텔레비젼 수신기.A multisystem television receiver adapted to receive television signals of PAL, SECAM and NTSC systems comprises crystal oscillators 5a and 5b coupled to the oscillator for oscillation at a frequency other than the voltage controlled oscillator 4. An APC loop, a phase detector 7 for detecting a phase difference between the oscillation signal from the oscillator and the burst signal of a television signal, a flip-flop 8 controlled by the signal calculated from the phase detector, and a color for a SECAM system. SECAM cancellation 35 for generating an erase signal, and a switching circuit 6 controlled by the erase circuit and the flip-flop circuit for selecting one of the oscillation elements for executing oscillation of the required frequency. Multi-system TV receiver. 제1항에 있어서, 채널의 변경시에 채널변경펄스를 발생하는 펄스발생수단(14,15)을 더욱 가지고, 상기 APC루우프가 전압제어발진기에 접속된 저주파 통과 필터(3)를 더 가지고, 저주파통과 필터는 채널변경펄스가 존재할때 저주파통과 필터 단락의 시정수를 만들기 위한 시정수 설정회로(12,13)를 가지는 것.2. The low frequency filter according to claim 1, further comprising pulse generating means (14, 15) for generating a channel change pulse upon changing the channel, wherein said APC loop further has a low pass filter (3) connected to a voltage controlled oscillator. The pass filter has time constant setting circuits (12, 13) for making the time constant of the low pass filter short when the channel change pulse is present. 제1항에 있어서, 채널의 변경시에 채널변경펄스를 발생하기 위한 펄스발생수단(14,15)을 더욱 가지고 위상 검출기(7)는 채널변경펄스가 존재할때 위상검출기 단락의 시정수를 만들기 위한 시정수 설정회로 (17,18)를 가지는 것.2. The phase detector (7) according to claim 1, further comprising pulse generating means (14, 15) for generating a channel change pulse upon channel change, and the phase detector (7) for generating a time constant of the phase detector short circuit when a channel change pulse is present. Having time constant setting circuits (17, 18) 다수의 다른 서브캐리어파 주파수를 가진 다수의 다른 시스템의 텔레비젼 신호를 수신하게 적용된 다중시스템 텔레베젼 수신기가 텔레비젼 신호의 서브캐리어파의 주파수를 검출하고, 검출된 주파수를 표시하는 주파수테이터(a)를 산출하는 주파수검출수단(7,8)과, 텔레비젼 신호의 시스템을 검출하고 검출된 시스템을 표시하는 시스템디이터(b,c)를 산출하는 시스템 검출수단(26,27)과, 채널변경을 검출하는 채널 변경검출수단(14,15,28)과, 주파수 데이터와 검출수단에 의하여 검출된 채널의 변경시의 시스템데이터를 유지하는 유지수단(23)과, 상기 주파수 데이터와 시스템데이터에 순응하는 조건으로 설정되는 텔레비젼회로(6,19,32,30,26,33)를 가치는 것을 특징으로 하는 다중시스템 텔레비젼 수신기.A multisystem television receiver adapted to receive television signals of a plurality of different systems having a plurality of different subcarrier wave frequencies detects the frequency of the subcarrier waves of the television signal and collects frequency data (a) indicating the detected frequencies. The frequency detecting means (7, 8) for calculating, the system detecting means (26, 27) for detecting the system of the television signal and calculating the system indicators (b, c) for displaying the detected system, and detecting the channel change. Channel change detection means (14, 15, 28), holding means (23) for holding the system data at the time of change of the channel detected by the frequency data and the detection means, and a condition conforming to the frequency data and the system data. And a television system (6, 19, 32, 30, 26, 33) set in the multi-system television receiver. 제4항에 있어서, 상기 주파수 검출수단은 텔레비젼 신호의 버어스트 신호와 발진기(4)로 부터 산출된 서부캐리어 신호간의 위상차를 검출하는 위상검출기(7)를 가지고 플립플롭(8)의 상기 위상검출기(7)에 접속되는 것.5. The phase detector of the flip-flop (8) according to claim 4, wherein said frequency detecting means has a phase detector (7) for detecting a phase difference between a burst signal of a television signal and a western carrier signal calculated from the oscillator (4). Being connected to (7). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850003525A 1984-05-23 1985-05-22 Multi-system television receiver KR900000126B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1984075991U JPS60189187U (en) 1984-05-23 1984-05-23 Subcarrier automatic switching circuit
JP84-75991 1984-05-23

Publications (2)

Publication Number Publication Date
KR850008080A true KR850008080A (en) 1985-12-11
KR900000126B1 KR900000126B1 (en) 1990-01-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850003525A KR900000126B1 (en) 1984-05-23 1985-05-22 Multi-system television receiver

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JP (1) JPS60189187U (en)
KR (1) KR900000126B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5765087A (en) * 1980-10-07 1982-04-20 Mitsubishi Electric Corp Color television receiver
JPS5825779A (en) * 1981-08-07 1983-02-16 Matsushita Electric Ind Co Ltd Multisystem color television receiver

Also Published As

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JPH0342782Y2 (en) 1991-09-06
JPS60189187U (en) 1985-12-14
KR900000126B1 (en) 1990-01-20

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