KR900002500Y1 - 비디오 디스크 플레이어에서 디스크의 틸트에 대한 포커스서보 자동 보정회로 - Google Patents
비디오 디스크 플레이어에서 디스크의 틸트에 대한 포커스서보 자동 보정회로 Download PDFInfo
- Publication number
- KR900002500Y1 KR900002500Y1 KR2019860019416U KR860019416U KR900002500Y1 KR 900002500 Y1 KR900002500 Y1 KR 900002500Y1 KR 2019860019416 U KR2019860019416 U KR 2019860019416U KR 860019416 U KR860019416 U KR 860019416U KR 900002500 Y1 KR900002500 Y1 KR 900002500Y1
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- signal
- output
- pulse
- focus servo
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000003321 amplification Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000005236 sound signal Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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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
- G11B7/094—Methods and circuits for servo offset compensation
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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
- G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (1)
- 비디오 디스크 플레이어의 포커스 서보 보정회로에 있어서, 포커스 에러 입력과 포커스 서보 신호를 가산하는 가사회로(10)와, 상기 가산회로의 출력을 전치 증폭한후 전력 증폭하는 증폭회로(20)와, 상기 증폭회로의 신호에 의해 렌즈가 이동하며 촛점을 맞추는 포커스 서보 출력회로(30)와, 상기 아날로그의 포커스 서보 신호를 입력하여 디지탈 신호로 변환하고 인에이블 신호에 의해 포커스 신호를 출력하는 A/D변환회로(40)와, 디스크회전에 따라 주파수 발생기에서 발생되는 아날로그 신호를 증폭하여 디지탈 펄스로 변환한 후 반전시켜 각 래치의 동작과 리드와 라이트 신호의 정확한 타이밍 펄스를 공급하는 펄스 발생회로(50)와, 포커스 신호를 입력하여 상기 펄스 발생회로(50)의 펄스에 따라 리드 또는 라이트 하는 메모리회로(60)와, 펄스 발생회로(50)의 펄스를 클럭으로 입력하여 메모리회로(60)에 리드 또는 라이트 어드레스를 지정하는 어드레스 발생회로(70)와, 펄스 발생회로(50)의 펄스에 의해 메모리회로(60)로 부터 포커스 서보 신호를 입력하여 디지탈 신호를 아날로그 신호로 변환시키고 가산회로(10)에 출력시키는 D/A변환회로(8)로 구성됨을 특징으로 하는 비디오 디스크플레이어의 틸트에 대한 포커스 서보 자동 보정회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019860019416U KR900002500Y1 (ko) | 1986-12-05 | 1986-12-05 | 비디오 디스크 플레이어에서 디스크의 틸트에 대한 포커스서보 자동 보정회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019860019416U KR900002500Y1 (ko) | 1986-12-05 | 1986-12-05 | 비디오 디스크 플레이어에서 디스크의 틸트에 대한 포커스서보 자동 보정회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880013251U KR880013251U (ko) | 1988-08-29 |
KR900002500Y1 true KR900002500Y1 (ko) | 1990-03-30 |
Family
ID=19257703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019860019416U KR900002500Y1 (ko) | 1986-12-05 | 1986-12-05 | 비디오 디스크 플레이어에서 디스크의 틸트에 대한 포커스서보 자동 보정회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR900002500Y1 (ko) |
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1986
- 1986-12-05 KR KR2019860019416U patent/KR900002500Y1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR880013251U (ko) | 1988-08-29 |
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Comment text: Application for Utility Model Registration Patent event code: UA01011R08D Patent event date: 19861205 |
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