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1. IN852/CHENP/2006 - A RECORDER, A DISC AND A METHOD FOR RECORDING INFORMATION ON A DISC

Office
India
Application Number 852/CHENP/2006
Application Date 10.03.2006
Publication Number 852/CHENP/2006
Publication Date 01.06.2007
Publication Kind A
IPC
G11B 7/007
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
007Arrangement of the information on the record carrier, e.g. form of tracks
Applicants
Title
(EN) A RECORDER, A DISC AND A METHOD FOR RECORDING INFORMATION ON A DISC
Abstract
(EN) When recording information in tracks or in a two-dimensional pattern care must be taken not to irradiate the adjacent tracks or pits. This results in a loss of data density on the recording medium because of the track pitch or pit distance that must be observed. A reduction in track pitch is possible to the point where the focused spot of the laser also irradiates the adjacent land area and tracks or pits. This increases the achievable data density of the recording medium. By using grooves and/or by using a dye with special absorption characteristics the effect of the irradiation of the adjacent tracks or pits can be reduced, effectively only recording marks in the desired location.
Related patent documents
US2006280071This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.