Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1986-09-29
1987-09-22
Cardillo, Raymond F.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 44, 369 54, 369 56, 360 721, 360 722, G11B 2728, G11B 7095, G11B 2108
Patent
active
046959890
ABSTRACT:
An optical disc apparatus is disclosed, which comprises an optical head for obtaining an information signal from an optical disc through photoelectric conversion and an accessing section for moving the optical head to a position corresponding to a desired track of the optical disc. When the optical optical head is moved in a radial direction of the optical disc, the signal obtained therefrom is binarized by a binarization coder to obtain a binary pulse signal. Noise components contained in the binary pulse signal that are introduced from scars or scratches of the optical disc or dust particles attached thereto are removed from the binary pulse signal. Signal components corresponding to the innermost track of the optical disc are detected as a signal representing a reference position of the optical disc. A correction scale value is obtained from the difference between the reference position and an initial position of a scale of a position detector. An access position is determined from the correction scale value and designated track number.
REFERENCES:
patent: 3881184 (1975-04-01), Koepcke et al.
patent: 4106058 (1978-08-01), Romeas et al.
patent: 4135086 (1979-01-01), Baba
patent: 4321635 (1982-03-01), Tsuyuguchi
patent: 4375091 (1983-02-01), Dakin et al.
patent: 4481613 (1984-11-01), Yokota
patent: 4513406 (1985-04-01), Ishihara
patent: 4519056 (1985-05-01), Kimoto et al.
Patent Abstracts of Japan vol. 2, No. 108, Sep. 8, 1978, p. 5755 E78 & JP-A-53-73121.
Patent Abstracts of Japan vol. 5, No. 64, Apr. 30, 1981 & JP-A-56-16966.
Patent Abstracts of Japan vol. 6, No. 104, Jun. 15, 1982 & JP-A-57-36482.
Cardillo Raymond F.
Tokyo Shibaura Denki Kabushiki Kaisha
Young Wayne R.
LandOfFree
Optical disc apparatus with selective track accessing using a co does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical disc apparatus with selective track accessing using a co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc apparatus with selective track accessing using a co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2063473