Patent · US Expired

Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks having clock synchronization, address number and address ID

US6456585B1 · kind B1 · utility

1Cited by
20References
2Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 12, 2000
Grant dateSep 24, 2002
Priority date
Expiry dateMay 12, 2020

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG11B2220/2537
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

Address groups are composed of two of address blocks 16, 17, 18, and 19, where the address blocks 16, 17, 18, and 19 are disposed in a sector address region 5 and include identifiable information of address numbers 13 and overlapping sequential numbers 14. The address groups are disposed so that each group is alternately shifted from a track center 2 toward the inner periphery side or the outer periphery side, by a width substantially equal to half the track pitch, along the radius direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.