G11B20/00913 - CPC Classification Index

ClassID:

198767 ⎘

G11B20/00913 - 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 a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm based on a spread spectrum technique

Recent Application in this class:

20140149661

2014-05-29

Information carrier comprising access information

20140033325

2014-01-30

Non-volatile memory for anti-cloning and authentication method for the same

20120113788

2012-05-10

Information carrier comprising access information

20120066774

2012-03-15

Non-volatile memory for anti-cloning and authentication method for the same

20110107111

2011-05-05

Information carrier comprising access information and dummy information

20070294609

2007-12-20

Recording medium, recording method and apparatus, reproducing method and apparatus, data transmitting method, and data decrypting method

20070217605

2007-09-20

Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method

20070183455

2007-08-09

Method of inserting digital watermarks in one-bit audio files

20070124646

2007-05-31

RECORDING MEDIUM, RECORDING METHOD AND APPARATUS, REPRODUCING METHOD AND APPARATUS, DATA TRANSMITTING METHOD, AND DATA DECRYPTING METHOD

#10

20070061585

2007-03-15

Watermark system

#11

20060155649

2006-07-13

Information signal reproducing apparatus, information signal outputting apparatus, information signal reproducing method, and information signal outputting method

#12