Patents-Review.com
ClassID:

198681 ⎘

G11B20/00289 - 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 encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in the content area, e.g. program area, data area or user area wherein the key is stored as a watermark

Recent Application in this class:
#1
20250166035
2025-05-22

OBJECT IDENTIFICATION AND DEVICE COMMUNICATION THROUGH IMAGE AND AUDIO SIGNALS

 #2
20210342588
2021-11-04

Object identification and device communication through image and audio signals

 #3
20210151081
2021-05-20

Authenticating digital recordings

 #4
20190267036
2019-08-29

Authenticating digital recordings

 #5
20160005411
2016-01-07

VERSATILE MUSIC DISTRIBUTION

 #6
20150279378
2015-10-01

Lossless embedded additional data

 #7
20100172540
2010-07-08

Synchronizing rendering of multimedia content

 #8
20070168673
2007-07-19

Method of allocating payload bits of a watermark

 #9
20070145735
2007-06-28

Marking articles using a covert digitally watermarked image

 #10
20070140307
2007-06-21

High Definition Media Storage Structure and Playback Mechanism

 #11
20070067650
2007-03-22

Data outputting method, data outputting apparatus, data reproducing method, data reproducing apparatus, data recording method, data recording apparatus, and record medium

 #12
20070067649
2007-03-22

Data outputting method, data outputting apparatus, data reproducing method, data reproducing apparatus, data recording method, data recording apparatus, and record medium

 #13
20070067648
2007-03-22

Data outputting method, data outputting apparatus, data reproducing method, data reproducing apparatus, data recording method, data recording apparatus, and record medium

 #14
20060242071
2006-10-26

Method for minimizing pirating and/or unauthorized copying and/or unauthorized access of/to data on/from data media including compact discs and digital versatile discs, and system and data media for same

 #15
20060159303
2006-07-20

Integrating digital watermarks in multimedia content

 #16
20060075238
2006-04-06

Method for processing an analog signal

 #17
20050240958
2005-10-27

Method and apparatus for on-demand multimedia rental and sales services

 #18
20050237872
2005-10-27

MVC-003U method and system for multiple read/write heads for transferring date to/from a storage medium

 #19
20050154905
2005-07-14

Recording medium, recording medium writing device, recording medium reading device, recording medium writing method, and recording medium reading method

 #20
20050114909
2005-05-26

High definition media storage structure and playback mechanism

 #21
20050018595
2005-01-27

System for applying markings to optical media

 #22
10392627
2014-08-19

Method and system for marking digital content