US 6,335,916 B1 · Optical recording medium, stamper for use to produce the optical recording medium, and method of producing the stamper

Abstract

The mark length of each of pits forming together the pit train is made shorter than that of each of pits for a to-be-written signal normalized at the predetermined bit interval T. Also, the mark length of a shortest one of the pits forming together the pit train is set to 64.8 to 80.0% of the shortest mark length for the to-be-written signal normalized at the predetermined bit interval T.

Claims0

Dependent claims

Claims aren’t available for this document.

Facts

Application

09/492,475Filed 27 Jan 2000

Granted

1 Jan 2002

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G11B 7/24085
Tracks or pits; Shape, structure or physical properties thereof: pits
G11B 7/261
Apparatus or processes specially adapted for the manufacture of record carriers: preparing a master, e.g. exposing photoresist, electroforming
G11B 7/0938
With provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record…
G11B 11/10578
With provision for moving the transducers for maintaining alignment or spacing relative to the carrier: servo format, e.g. prepits, guide tracks,…

Optical recording medium, stamper for use to produce the optical recording medium, and method of producing the stamper

Life of this patent

Abstract

Claims0

Optical recording medium, stamper for use to produce the optical recording medium, and method of producing the stamper

Life of this patent

Abstract

Claims0