KR950004226A - Waveform Equalization Method for Optical Disc Drive - Google Patents

Waveform Equalization Method for Optical Disc Drive Download PDF

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Publication number
KR950004226A
KR950004226A KR1019930014581A KR930014581A KR950004226A KR 950004226 A KR950004226 A KR 950004226A KR 1019930014581 A KR1019930014581 A KR 1019930014581A KR 930014581 A KR930014581 A KR 930014581A KR 950004226 A KR950004226 A KR 950004226A
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KR
South Korea
Prior art keywords
amplitude adjustment
signal
reproduction signal
delayed
adjustment coefficient
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Application number
KR1019930014581A
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Korean (ko)
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KR100255727B1 (en
Inventor
고성로
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019930014581A priority Critical patent/KR100255727B1/en
Publication of KR950004226A publication Critical patent/KR950004226A/en
Application granted granted Critical
Publication of KR100255727B1 publication Critical patent/KR100255727B1/en

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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor

Abstract

본 발명은 기록된 데이타의 재생시 기록매체와 광학계, 광학계와 전기계 사이의 특성에 의해 발생하는 부호간 간섭을 보정하기 위한 파형등화방법에 관한 것으로, 진폭조정계수설정과정, 지연과정, 진폭조정과정과 가산과정으로 이루어지며, 디스크의 반경에 따라서 진폭조정계수를 조정함으로써 신호가 기록되어 있는 디스크의 반경에 상관없이 재생신호를 충실히 보정할 수 있는 이점이 있다.The present invention relates to a waveform equalization method for correcting inter-symbol interference caused by a characteristic between a recording medium and an optical system, an optical system and an electric system during reproduction of recorded data. It consists of a process and an addition process, and by adjusting the amplitude adjustment coefficient according to the radius of the disc, there is an advantage that the reproduction signal can be faithfully corrected regardless of the radius of the disc on which the signal is recorded.

Description

광디스크 드라이브의 파형 등화방법Waveform Equalization Method for Optical Disc Drive

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

제2도는 제1도에 도시된 파형등화장치의 주파수특성을 나타낸 도면, 제3도는 본 발명에 의한 광디스크 드라이브의 파형등화방법을 설명하기 위한 파형등화장치의 블럭도.2 is a view showing the frequency characteristics of the waveform equalizing device shown in FIG. 1, and FIG. 3 is a block diagram of a waveform equalizing device for explaining the waveform equalizing method of the optical disk drive according to the present invention.

Claims (4)

광디스크로부터 독출되어 재생되는 신호를 등화하기 위한 방법에 있어서, 상기 재생신호가 상기 디스크의 어느 반경부분에 기록되어 있었는지에 따라서 등화에 필요한 진폭조정계수를 설정하기 위한 진폭조정계수설정과정; 상기 재생산신호를 제1소정시간동안 지연한 후 재차 제2소정시간동안 지연하기 위한 지연과정; 상기 진폭조정계수설정과정에서 설정된 진폭조정계수에 따라서 상기 재생신호, 상기 지연과정에서 1차 지연된 재생신호와 2지연된 재생신호의 진폭을 조정하기 위한 진폭조정과정; 상기 진폭조정된 상기 재생신호, 상기 지연과정에서 1차지연된 재생상신호와 2차 지연된 재생신호를 가산하기 위한 가산과정을 포함함을 특징으로 하는 광디스크 드라이브의 파형등화방법.CLAIMS 1. A method for equalizing a signal read out from an optical disc and reproduced, comprising: an amplitude adjustment coefficient setting step for setting an amplitude adjustment coefficient required for equalization according to which radial portion of the disc the reproduction signal has been recorded; A delay process for delaying the reproduction signal for a first predetermined time and again for a second predetermined time; An amplitude adjustment process for adjusting the amplitudes of the playback signal, the first delayed playback signal and the second delayed playback signal in accordance with the amplitude adjustment coefficient set in the amplitude adjustment coefficient setting process; And an adding process for adding the amplitude-adjusted reproduction signal, the primary delayed reproduction image signal in the delay process and the secondary delayed reproduction signal. 제1항에 있어서, 상기 진폭조정계수설정과정은 상기 디스크 내주에서 외주로 갈수록 상기 진폭조정계수를 감소시킴을 특징으로 하는 광디스크 드라이브의 파형등화방법.The waveform equalization method of claim 1, wherein the amplitude adjustment coefficient setting process decreases the amplitude adjustment coefficient from the inner circumference to the outer circumference of the disc. 제1항에 있어서, 상기 진폭조정과정은 상기 디스크의 반경에 따라 필요한 진폭조정계수를 마이크로프로세서 또는 롬 테이블에 저장한 후 필요시 추출하여 상기 재생신호, 상기 지연과정에서 1차지연된 재생신호와 2차지연된 재생신호의 진폭을 조정함을 특징으로 하는 광디스크 드라이브의 파형등화방법.The method of claim 1, wherein the amplitude adjustment process stores the amplitude adjustment coefficient according to the radius of the disc in a microprocessor or ROM table and extracts it if necessary, thereby reproducing the reproduction signal and the reproduction signal first delayed in the delay process. A waveform equalization method of an optical disk drive, characterized by adjusting the amplitude of a charge delayed playback signal. 제3항에 있어서, 상기 진폭조정과정은 상기 재생신호와 상기 지연과정에서 2차지연된 재생신호의 진폭을 조정하는 동시에 반전시키고, 상기 지연과정에서 1차지연된 재생신호는 진폭만 조정함을 특징으로 하는 광디스크 드라이브의 파형등화방법.4. The method of claim 3, wherein the amplitude adjustment process adjusts and inverts the amplitudes of the reproduction signal and the second delayed reproduction signal in the delay process, and adjusts only the amplitude of the primary delayed reproduction signal in the delay process. Waveform equalization method of optical disk drive. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930014581A 1993-07-29 1993-07-29 Waveform equalization method of optical disc drive KR100255727B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930014581A KR100255727B1 (en) 1993-07-29 1993-07-29 Waveform equalization method of optical disc drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930014581A KR100255727B1 (en) 1993-07-29 1993-07-29 Waveform equalization method of optical disc drive

Publications (2)

Publication Number Publication Date
KR950004226A true KR950004226A (en) 1995-02-17
KR100255727B1 KR100255727B1 (en) 2000-06-01

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Application Number Title Priority Date Filing Date
KR1019930014581A KR100255727B1 (en) 1993-07-29 1993-07-29 Waveform equalization method of optical disc drive

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KR100255727B1 (en) 2000-06-01

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