Optical disc and method for recording on optical disc
AssigneeSony Corporation
InventorYoshimori Yamasaki
Life of this patent
Estimating the term…
Abstract
An optical disc having a plurality of recording zones, each having 2.sup.n tracks, with the recording capacity of each track in a given zone being equal and the recording capacity being different for each recording zone, and with a line recording density of each recording zone being approximately equal.
Claims9
An optical disc having formed thereon plural tracks for recording information data and comprising:
- a recording region subdivided into plural recording zones each having 2.sup.n tracks, n being an integer natural number, with each track in a given recording zone having a same recording capacity which is different from a recording capacity of tracks in different recording zones, and wherein a line recording density within the recording zones is approximately equal.
An optical disc having recording tracks formed thereon, in which information data are recorded, at a pitch narrower than 1.6 .mu.m, wherein the improvement comprises:
- that a reciprocal of a line recording density of circumferential recording tracks is 1.0 to 0.6 .mu.m/bit, and wherein
- that a recording region on which information data are recorded according to an edge recording system is subdivided into 2 to 10 recording zones at intervals of plural tracks.
A method for recording on an optical disc, comprising the steps of:
- forming a plurality of tracks on the optical disc, the tracks having a pitch narrower than 1.6 .mu.m,
- forming each track to have a reciprocal of a line recording density in a circumferential direction to be 1.0 to 0.6 .mu.m/bit, and
- subdividing a recording region of the optical disc into 2 to 10 recording zones at intervals of plural tracks and
- carrying out recording according to an edge recording system.
A method for recording information data in a recording region of an optical disc comprising the steps of:
- subdividing the recording region of the optical disc into plural recording zones each having 2.sup.n tracks, n being an integer natural number, and
- recording the information data so that each track in a given recording zone has a same recording capacity, which is different from a recording capacity of tracks in the other recording zones of the plurality of recording zones, and a line recording density within the recording zones is substantially equal.
An optical disc having recording tracks formed thereon on which information data are recorded, wherein the improvement comprises:
- that the tracks are formed at a pitch narrower than 1.6 .mu.m, a reciprocal of a line recording density of circumferential recording tracks is 1.0 to 0.7 .mu.m/bit, and
- wherein a recording region on which the information data are recorded is subdivided into 2 to 10 recording zones at intervals of plural tracks.
A method for recording information data in a recording region of an optical disc on which plural recording tracks are formed, comprising the steps of:
- forming the recording tracks so that the recording tracks have a pitch narrower than 1.6 .mu.m,
- forming circumferential recording tracks to have a reciprocal of a line recording density of 1.0 to 0.7 .mu.m/bit, and
- subdividing each recording zone into plural tracks, the number of the recording zones being 2 to 10.
Dependencies are inferred from the claim text.