KR100817045B1 - 노이즈 제거 장치 및 방법 - Google Patents
노이즈 제거 장치 및 방법 Download PDFInfo
- Publication number
- KR100817045B1 KR100817045B1 KR1020020011870A KR20020011870A KR100817045B1 KR 100817045 B1 KR100817045 B1 KR 100817045B1 KR 1020020011870 A KR1020020011870 A KR 1020020011870A KR 20020011870 A KR20020011870 A KR 20020011870A KR 100817045 B1 KR100817045 B1 KR 100817045B1
- Authority
- KR
- South Korea
- Prior art keywords
- noise
- error signal
- signal
- pickup
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0948—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
Description
Claims (9)
- 광 기록 매체 구동 장치에 있어서,상기 광 기록 매체 재생 시에 픽업에 의해 출력되는 고주파 신호를 증폭하는 고주파 증폭부;상기 증폭된 고주파 신호로부터 제1 에러 신호를 감지하고 감지된 제1 에러 신호를 기준값과 비교하여 노이즈 유/무를 검출하는 노이즈 검출부; 및상기 제1 에러 신호가 기준값 이상 또는 이하인 경우 노이즈 제거를 위한 노이즈 제거 스위치를 온 시키고 상기 스위치가 온 되어 출력되는 반전된 제2 에러 신호와 상기 제1 에러 신호를 합성하여 노이즈가 제거된 제3 에러 신호를 출력하는 노이즈 제거부를 포함하는 노이즈 제거 장치.
- 삭제
- 제 1항에 있어서, 상기 픽업이 시크(Seek) 또는 점프(Jump) 동작을 하는 경우 상기 노이즈 검출부 및 노이즈 제거부는 동작하지 않는 것을 특징으로 하는 노이즈 제거 장치.
- 삭제
- 삭제
- 삭제
- 광 기록 매체 구동 방법에 있어서,(a) 상기 광 기록 매체 재생 시에 픽업에 의해 출력되는 고주파 신호를 증폭하는 단계;(b) 상기 증폭된 고주파 신호로부터 제1 에러 신호를 감지하고 감지된 제1 에러 신호를 기준값과 비교하여 노이즈 유/무를 검출하는 단계;(c) 상기 제1 에러 신호가 기준값 이상 또는 이하인 경우 노이즈 제거를 위한 노이즈 제거 스위치를 온 시키는 단계; 및(d) 상기 노이즈 제거 스위치가 온 되어 출력되는 반전된 제2 에러 신호와 상기 제1 에러 신호를 합성하여 노이즈가 제거된 제3 에러 신호를 출력하는 단계를 포함하는 노이즈 제거 방법.
- 삭제
- 제 7항에 있어서, 상기 픽업이 시크(Seek) 또는 점프(Jump) 동작을 하는 경우 상기 (b), (c) 및 (d)단계는 동작하지 않는 것을 특징으로 하는 노이즈 제거 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020011870A KR100817045B1 (ko) | 2002-03-06 | 2002-03-06 | 노이즈 제거 장치 및 방법 |
CN02152499A CN1442857A (zh) | 2002-03-06 | 2002-12-02 | 去除噪声的设备和方法 |
JP2003001527A JP2003263761A (ja) | 2002-03-06 | 2003-01-07 | ノイズ除去装置及び方法 |
US10/379,544 US20030169653A1 (en) | 2002-03-06 | 2003-03-06 | Apparatus and method for deleting noise |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020011870A KR100817045B1 (ko) | 2002-03-06 | 2002-03-06 | 노이즈 제거 장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030072708A KR20030072708A (ko) | 2003-09-19 |
KR100817045B1 true KR100817045B1 (ko) | 2008-03-26 |
Family
ID=27785986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020011870A Expired - Fee Related KR100817045B1 (ko) | 2002-03-06 | 2002-03-06 | 노이즈 제거 장치 및 방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20030169653A1 (ko) |
JP (1) | JP2003263761A (ko) |
KR (1) | KR100817045B1 (ko) |
CN (1) | CN1442857A (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102216988A (zh) * | 2008-11-14 | 2011-10-12 | 松下电器产业株式会社 | 检波器及检波方法 |
US9379854B2 (en) * | 2013-11-19 | 2016-06-28 | Cable Television Laboratories, Inc. | Signaling with noise cancellation using echoes |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938933A (ja) | 1982-08-25 | 1984-03-03 | Trio Kenwood Corp | 光学的情報読取装置におけるサ−ボ装置 |
KR970071540A (ko) * | 1996-04-19 | 1997-11-07 | 구자홍 | 디스크 기록재생기의 포커스 서보 제어 회로 |
JP2721405B2 (ja) * | 1989-09-28 | 1998-03-04 | パイオニア株式会社 | トラッキングサーボ装置 |
JPH1064069A (ja) | 1996-08-22 | 1998-03-06 | Sony Corp | 光記録再生装置 |
JPH10340537A (ja) | 1997-06-05 | 1998-12-22 | Sanyo Electric Co Ltd | ディスク再生装置、及び再生回路 |
KR19990018273A (ko) * | 1997-08-27 | 1999-03-15 | 윤종용 | 픽업 이동 제어 장치 및 방법 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3164663B2 (ja) * | 1992-09-25 | 2001-05-08 | オリンパス光学工業株式会社 | 光学式情報記録再生装置 |
JP3560410B2 (ja) * | 1996-03-25 | 2004-09-02 | 三菱電機株式会社 | 光ディスク装置および光ディスク |
US6246647B1 (en) * | 1997-10-16 | 2001-06-12 | Sony Corporation | Optical disc apparatus, driving control method for objective lens, control method for optical head and recording/reproducing method for optical head |
JP3856418B2 (ja) * | 1998-09-10 | 2006-12-13 | パイオニア株式会社 | 記録媒体プレーヤのサーボ装置 |
US20020031061A1 (en) * | 2000-06-06 | 2002-03-14 | Minoru Yonezawa | Optical disk apparatus and method of adjusting the same |
-
2002
- 2002-03-06 KR KR1020020011870A patent/KR100817045B1/ko not_active Expired - Fee Related
- 2002-12-02 CN CN02152499A patent/CN1442857A/zh active Pending
-
2003
- 2003-01-07 JP JP2003001527A patent/JP2003263761A/ja active Pending
- 2003-03-06 US US10/379,544 patent/US20030169653A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5938933A (ja) | 1982-08-25 | 1984-03-03 | Trio Kenwood Corp | 光学的情報読取装置におけるサ−ボ装置 |
JP2721405B2 (ja) * | 1989-09-28 | 1998-03-04 | パイオニア株式会社 | トラッキングサーボ装置 |
KR970071540A (ko) * | 1996-04-19 | 1997-11-07 | 구자홍 | 디스크 기록재생기의 포커스 서보 제어 회로 |
JPH1064069A (ja) | 1996-08-22 | 1998-03-06 | Sony Corp | 光記録再生装置 |
JPH10340537A (ja) | 1997-06-05 | 1998-12-22 | Sanyo Electric Co Ltd | ディスク再生装置、及び再生回路 |
KR19990018273A (ko) * | 1997-08-27 | 1999-03-15 | 윤종용 | 픽업 이동 제어 장치 및 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20030072708A (ko) | 2003-09-19 |
JP2003263761A (ja) | 2003-09-19 |
CN1442857A (zh) | 2003-09-17 |
US20030169653A1 (en) | 2003-09-11 |
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