KR970003128A - Track counter circuit of a compact disc player - Google Patents

Track counter circuit of a compact disc player Download PDF

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KR970003128A
KR970003128A KR1019950014630A KR19950014630A KR970003128A KR 970003128 A KR970003128 A KR 970003128A KR 1019950014630 A KR1019950014630 A KR 1019950014630A KR 19950014630 A KR19950014630 A KR 19950014630A KR 970003128 A KR970003128 A KR 970003128A
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comparator
signal
input
flop
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KR0129103B1 (en
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이윤희
김용석
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김광호
삼성전자 주식회사
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Abstract

이 발명은 컴팩트 디스크 플레이어(CDP; Compact Disc Player)의 트랙 카운터 회로(Track Counter Circuit)에 관한 것으로서, 포락선 검출부(41)와, Mirr신호를 만들어 출력하는 제1비교기(42)와, Mirr신호의 엣지를 검출하여 출력하는 제1엣지 검출부(43)와, TZC 신호를 만들어 출력하는 제2비교기(44)와, TZC신호의 엣지를 검출하여 출력하는 제2엣지 검출부(45)와, 제2비교기(44)의 출력을 래치시키는 제1디플립플롭(46)과, 제1비교기(42)의 출력을 래치시키는 제2디플립플롭(47)과, 스위치 제어 신호부(48)와, 업/다운 카운터(49)로 이루어지며, 편심이 심한 디스크에서도 정확하게 트랙을 카운팅하는 효과를 가진 컴팩트 디스크 플레이어의 트랙 카운터 회로에 관한 것이다.The present invention relates to a track counter circuit of a compact disc player (CDP), comprising an envelope detector 41, a first comparator 42 for generating and outputting a mirr signal, and a mirr signal. A first edge detector 43 for detecting and outputting an edge, a second comparator 44 for generating and outputting a TZC signal, a second edge detector 45 for detecting and outputting an edge of a TZC signal, and a second comparator A first deflip-flop 46 for latching the output of the 44, a second deflip-flop 47 for latching the output of the first comparator 42, a switch control signal section 48, up / down A down counter 49, which relates to a track counter circuit of a compact disc player having an effect of accurately counting tracks even in an eccentric disc.

Description

컴팩트 디스크 플레이어의 트랙 카운터 회로Track counter circuit of a compact disc player

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

제4도는 이 발명의 실시예에 따른, 컴팩트 디스크 플레이어의 트랙 카운터회로를 나타낸 블럭도이다, 제5도는 이 발명의 실시예에 따른, 컴팩트 디스크 플레이어의 트랙 카운터회로에서 각 블럭의 입력 파형과 출력 파형을나타낸 파형도이다, 제6도는 이 발명의 실시예에 따른, 컴팩트 디스크 플레이어의 트랙 카운터 회로를 사용하여 편심이 심한 디스크를 탐색할 경우의 파형도이다.4 is a block diagram showing a track counter circuit of a compact disc player according to an embodiment of the present invention. FIG. 5 is an input waveform and output of each block in the track counter circuit of a compact disc player according to an embodiment of the present invention. Fig. 6 is a waveform diagram showing waveforms. Fig. 6 is a waveform diagram in the case of searching for an eccentric disc by using the track counter circuit of the compact disc player according to the embodiment of the present invention.

Claims (3)

디스크에서 읽어낸 RF 신호를 입력으로 받아서, 포락선 신호를 검출하는 포락선 검출부(41)와, 상기한 포락선 검출부(41)의 출력을 입력으로 받아서, Mirr신호를 만들어 출력하는 제1비교기(42)와, 상기한 제1비교기(42)의 출력을 입력으로 받아서, Mirr 신호의 엣지를 검출하여 출력하는 제1엣지검출부(43)와, 트래킹 에러 신호를 입력으로 받아서, TZC 신호를만들어 출력하는 제2비교기(44)와, 상기한 제2비교기(44)의 출력을 입력으로 받아서, TZC 신호의 엣지를 검출하여 출력하는 제2엣지 검출부(45)와, 상기한 제1엣지 검출부(43)의 출력을 클럭 단자의 입력으로 받아서, 상기한 제2비교기(44)의 출력을 래치시키는 제1디플립플롭(46)과, 상기한 제2엣지 검출부(45)의 출력을 클럭 단자의 입력으로 받아서, 상기한 제1비교기(42)의 출력을 래치시키는 제2디 플립플롭(47)과, 마이컴(도시되지 않음)의 명령에 따라서, 상기한 제1디플립플롭(46)의 출력단자와 업 카운트 단자중에서 하나를 선택하고, 상기한 제1비교기(42)의 출력이 인버터를 거쳐 연결된 단자와 상기한 제2디플립플롭(47)의 출력단자중에서 하나를 선택하는 스위치 제어신호부(48)와, 상기한 스위치 제어 신호부(48)의선택에 따라서, 상기한 제1비교기(42)의 출력이 인버터를 거쳐 연결된 단자와 상기한 제2디플립플롭(47)의 출력단자 중에서 한 단자의 출력을 클럭 단자의 입력으로 하고, 상기한 제1디플립플롭(46)의 출력 단자와 업 카운트 단자 중에서 한 단자의 출력을 입력으로 받아 다운 카운트하거나 업 카운트하는 업/다운 카운터(49)로 이루어지는 것을 특징으로 하는 컴팩트 디스크 플레이어의 트랙 카운터 회로.An envelope detector 41 for receiving an RF signal read from the disk as an input and detecting an envelope signal; A first edge detector 43 which receives the output of the first comparator 42 as an input, detects and outputs an edge of the Mirr signal, and a second which receives a tracking error signal as an input and generates and outputs a TZC signal. The second edge detector 45 that receives the comparator 44 and the output of the second comparator 44 as an input, detects and outputs the edge of the TZC signal, and the output of the first edge detector 43 described above. Is received as the input of the clock terminal, and receives the first dip-flop 46 for latching the output of the second comparator 44 and the output of the second edge detector 45 as the input of the clock terminal, A second di flip-flop 47 for latching the output of the first comparator 42; According to a command of a microcomputer (not shown), one of the output terminal and the up count terminal of the first deflip-flop 46 is selected, and the output of the first comparator 42 is connected via an inverter. And the first comparator 42 according to the selection of the switch control signal section 48 for selecting one of the output terminals of the second dip-flop 47 and the switch control signal section 48 described above. The output of one of the terminals connected through the inverter and the output terminal of the second flip-flop 47 is the input of the clock terminal, and the output terminal of the first flip-flop 46 A track counter circuit of a compact disc player, characterized by comprising an up / down counter (49) for receiving an output of one of the count terminals as an input and down counting or up counting. 제1항에 있어서, 상기한 제1비교기(42)의 출력인 Mirr 신호는, 빔이 트랙에 조사될 때에는 “Low”이고, 미러에 조사될 때는 “High”인 것을 특징으로 하는 컴팩트 디스크 플레이어의 트랙 카운터 회로.The compact disc player according to claim 1, wherein the Mirr signal, which is the output of the first comparator 42, is "Low" when the beam is irradiated to the track and "High" when irradiated to the mirror. Track counter circuit. 제1항에 있어서, 상기한 제2비교기(44)의 출력인 TZC신호는 트랙킹 에러 신호를 컴패래이팅한 신호로서,상기한 제1비교기(42)의 출력인 Mirr 신호와는 90°의 위상 차이를 갖는 것을 특징으로 하는 컴팩트 디스크 플레이어의 트랙 카운터 회로.The TZC signal as an output of the second comparator 44 is a signal obtained by compiling a tracking error signal, and has a phase of 90 ° with the Mirr signal as the output of the first comparator 42. Track counter circuit of a compact disc player, characterized in that it has a difference. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950014630A 1995-06-02 1995-06-02 Track counter circuit of a compact disc player Expired - Fee Related KR0129103B1 (en)

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KR1019950014630A KR0129103B1 (en) 1995-06-02 1995-06-02 Track counter circuit of a compact disc player

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KR970003128A true KR970003128A (en) 1997-01-28
KR0129103B1 KR0129103B1 (en) 1998-04-18

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001067445A1 (en) * 2000-03-10 2001-09-13 Cns Co., Ltd. Track traverse counting on an optical disk
KR100532371B1 (en) * 1997-07-28 2006-01-27 삼성전자주식회사 Eccentricity detect circuit
KR100858313B1 (en) * 2007-01-05 2008-09-11 (주)위더스비젼 Zero Cross Detector and Mute Signal Generator in Audio Devices
WO2021071130A1 (en) * 2019-10-08 2021-04-15 씨제이제일제당(주) Method for preparing disodium 5'-guanylate heptahydrate crystal
WO2021101042A1 (en) * 2019-11-20 2021-05-27 씨제이제일제당 (주) Method for refining nucleic acids
WO2024214870A1 (en) * 2023-04-12 2024-10-17 씨제이제일제당 (주) Method for manufacturing disodium-5'-guanylate crystals

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100532371B1 (en) * 1997-07-28 2006-01-27 삼성전자주식회사 Eccentricity detect circuit
WO2001067445A1 (en) * 2000-03-10 2001-09-13 Cns Co., Ltd. Track traverse counting on an optical disk
US7046591B1 (en) 2000-03-10 2006-05-16 Cns Co., Ltd. Track traverse counting on an optical disk
KR100858313B1 (en) * 2007-01-05 2008-09-11 (주)위더스비젼 Zero Cross Detector and Mute Signal Generator in Audio Devices
WO2021071130A1 (en) * 2019-10-08 2021-04-15 씨제이제일제당(주) Method for preparing disodium 5'-guanylate heptahydrate crystal
KR20210041930A (en) * 2019-10-08 2021-04-16 씨제이제일제당 (주) Method of producing 5'-guanylic acid disodium 7 hydrate crystals
WO2021101042A1 (en) * 2019-11-20 2021-05-27 씨제이제일제당 (주) Method for refining nucleic acids
WO2024214870A1 (en) * 2023-04-12 2024-10-17 씨제이제일제당 (주) Method for manufacturing disodium-5'-guanylate crystals

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