G11B20/00637 - CPC Classification Index

ClassID:

198729 ⎘

G11B20/00637 - CPC Classification

Classification description:

Signal processing not specific to the method of recording or reproducing; Circuits therefor; Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames wherein the modification to the logical format mainly concerns management data, e.g., by changing the format of the TOC or the subcode said management data being address data

Sub-classes:

G11B20/00644 » {the address data format being such that there are overlapping address ranges} 7
G11B20/00652 » {the address data being scrambled so that ascending address values do not reflect the physical order of data blocks} 5

Recent Application in this class:

20240296869

Magnetic disk device

20090217388

Apparatus for and a method of copy-protecting a content carrying recording medium

20090180365

Information recording method and information reproducing method

20080219123

Copying digital content by emulating playing of a recording medium by a player

20080178296

Method and Device For Protecting the Contents of an Information Carrier

20070179707

Navigation system including a drive for reading out navigation data and a method for operating a navigation system

20070058520

Recordable optical disc

20070036356

DVD copy protection

20060047654

Storage medium

20050229013

Apparatus and method for digital content concealment in a storage medium recorded using a recording device