Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1995-06-01
1997-04-01
Dinh, Tan
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 48, 371 381, 386 1, G11B 509, H04N 576, H03M 1300
Patent
active
056173849
ABSTRACT:
An optical disk having a diameter less than 140 mm and, a thickness of 1.2 mm.+-.0.1 mm, with a plurality of record tracks having data recorded thereon as embossed pits representing information and exhibiting a track pitch in the range between 0.646 .mu.m and 1.05 .mu.m; with the tracks being divided into a lead-in area, a program area and a lead-out area. The data includes table of contents (TOC) information recorded in a plurality of sectors in at least one TOC track and user information recorded in a plurality of sectors in user tracks; with the TOC information including addresses of start sectors recorded in the user tracks. The data (both user and TOC information) is encoded in a long distance error correction code having at least eight parity symbols, and is run length limited (RLL) modulated.
REFERENCES:
patent: 4707818 (1987-11-01), Suzuki et al.
patent: 5455684 (1995-10-01), Fujinami et al.
patent: 5459712 (1995-10-01), Sugaya et al.
patent: 5477527 (1995-12-01), Tsuchiya et al.
patent: 5504585 (1996-04-01), Fujinami et al.
Iwamura Ryuichi
Kawamura Makoto
Yonemitsu Jun
Yoshimura Shunji
Dinh Tan
Frommer William S.
Sinderbrand Alvin
Sony Corporation
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