KR940020329A - CD mirror mirror circuit - Google Patents

CD mirror mirror circuit Download PDF

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Publication number
KR940020329A
KR940020329A KR1019930002020A KR930002020A KR940020329A KR 940020329 A KR940020329 A KR 940020329A KR 1019930002020 A KR1019930002020 A KR 1019930002020A KR 930002020 A KR930002020 A KR 930002020A KR 940020329 A KR940020329 A KR 940020329A
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KR
South Korea
Prior art keywords
output
signal
error
detector
operational amplifier
Prior art date
Application number
KR1019930002020A
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Korean (ko)
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KR950005251B1 (en
Inventor
김정호
Original Assignee
문정환
금성일렉트론 주식회사
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Priority to KR1019930002020A priority Critical patent/KR950005251B1/en
Publication of KR940020329A publication Critical patent/KR940020329A/en
Application granted granted Critical
Publication of KR950005251B1 publication Critical patent/KR950005251B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

본 발명은 씨디피의 미러(Mirror)회로에 관한 것으로, 종래에는 디스크상에 먼지 또는 제조시 결함이 있으면 기록데이타 탐색시 검출된 급격한 저전위를 보상하지 못하여 펄스로 출려됨으로 이동트랙의 계수에 포함되어 정확한 이동트랙의 수가 산출되지 못하였다. 이에따라, 기록데이타 탐색시 리드(Read)시간이 길어져서 고속동작하지 못하는 문제점이 있었다.The present invention relates to a mirror circuit of a CD, and in the related art, if there is dust or a defect in manufacturing, it cannot be compensated for a sudden low potential detected when searching for recorded data, and is included in the coefficient of the moving track because it is pulled out as a pulse. The exact number of moving tracks could not be calculated. Accordingly, there is a problem in that the read operation is long and the high speed operation cannot be performed when the recording data is searched.

이러한 점을 감안하여 본 발명에서는 검파된 파형에서 에러검출하고 이 에러검출에 따라 검출신호를 이전상태로 유지하게 구성함으로써 에러에 따른 기록데이타의 신호를 보상함과 아울러 펄스를 제거하게 된다. 이에따라, 이동트랙의 수를 정확히 산출함으로 고속탐색 동작을 수행하여 데이터 리드(Read)시간을 단축시킬 수 있다.In view of this, in the present invention, an error is detected in the detected waveform and the detection signal is maintained in the previous state according to the error detection, thereby compensating for the signal of the recording data according to the error and removing the pulse. Accordingly, the data read time can be shortened by performing the fast search operation by accurately calculating the number of moving tracks.

Description

씨디피의 미러(Mirror)회로CD mirror mirror circuit

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

제4도는 본 발명 씨디피의 미러(Mirror)회로도, 제5도는 제4도에 있어서, 각부의 파형도.4 is a mirror circuit diagram of the CD of the present invention, and FIG. 5 is a waveform diagram of each part in FIG.

Claims (2)

입력신호(Vi)를 반전증폭한 연산증폭기(OP11)의 출력(V1)를 최고치 및 최저치로 검파하는 신호검파부(11)의 출력(V2)(V3)을 검출하여 차동증폭함에 따라 에러검출에 따른 신호(V8)를 출력하는 에러검출부(13)와, 이 에러검출부(13)의 출력(V8)에 제어되어 상기 신호검파부(11)의 출력(V2)(V3)을 홀딩한 신호홀드부(12)의 출력(V4)을 증폭하거나 이전상태를 유지하는 피크치검출부(14)와, 상기 신호검출부(12)의 출력(V4)(V5)을 차동증폭함에 따른 반전신호(V10)를 평활하여 직류전압(V|11)을 출력하는 평활부(15)와, 이 평활부(15)의 출력(V11)과 상기 피크치증폭부(14)의 출력(V9)을 비교함에 따라 펄스(V0를 출력하는 신호비교부(16)로 구성함을 특징으로 하는 씨디피의 미러(Mirror)회로.Differential amplification by detecting the output (V 2 ) (V 3 ) of the signal detector 11 for detecting the output (V 1 ) of the operational amplifier (OP 11 ) inverted and amplified the input signal (Vi) to the highest and lowest values Therefore, the error detector 13 outputs the signal V 8 corresponding to the error detection, and the output V 8 of the error detector 13 is controlled to output V 2 (V) of the signal detector 11. 3 ) the peak value detection unit 14 which amplifies or maintains the output V 4 of the signal holding unit 12 holding the previous state, and the output V 4 (V 5 ) of the signal detection unit 12 is differential. to smooth the inverted signal (V 10) resulting from the amplified direct current voltage (V | 11) of the smoothing unit 15, the smoothing unit 15, an output (V 11) and said peak amplifier section (14) of outputting a And a signal comparator (16) for outputting a pulse (V 0 ) according to the comparison of the output (V 9 ). 제1항에 있어서, 피크치검출부(14)는 에러검출부(13)의 출력(V8)에 따라 턴온, 턴오프되는 트랜지스터(Q6)와, 이 트랜지스터(Q6)의 턴온시 신호홀드부(12)의 출력(V9)을 증폭하고 턴오프시 출력(V9을 하이 임피던스상태로 하는 연산증폭기(OP12)와, 이 연산증폭기(OP2)의 출력(V9)이 하이임피던스인 동안 이전상태를 유지하는 콘덴서(C14)로 구성함을 특징으로 하는 씨디피의 미러(Mirror)회로.The method of claim 1, wherein the peak value detector 14 and the error detector 13 output (V 8) is turned on, the turn-off transistor (Q 6) which is in accordance with the signal during turn on of the transistor (Q 6), the hold section ( while the output (V 9) of (an operational amplifier (OP 12 to the V 9) the output (V 9 amplification and turn off the high impedance state), and the operational amplifier (OP 2) the output of 12) is in the high impedance Mirror circuit of the CD, characterized by consisting of a capacitor (C 14 ) to maintain the previous state. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930002020A 1993-02-13 1993-02-13 Mirror circuit of cdp KR950005251B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930002020A KR950005251B1 (en) 1993-02-13 1993-02-13 Mirror circuit of cdp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930002020A KR950005251B1 (en) 1993-02-13 1993-02-13 Mirror circuit of cdp

Publications (2)

Publication Number Publication Date
KR940020329A true KR940020329A (en) 1994-09-15
KR950005251B1 KR950005251B1 (en) 1995-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930002020A KR950005251B1 (en) 1993-02-13 1993-02-13 Mirror circuit of cdp

Country Status (1)

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KR (1) KR950005251B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100249224B1 (en) * 1996-11-23 2000-03-15 구자홍 The method and apparatus for detecting mirror signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100249224B1 (en) * 1996-11-23 2000-03-15 구자홍 The method and apparatus for detecting mirror signal

Also Published As

Publication number Publication date
KR950005251B1 (en) 1995-05-22

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