ClassID:

230427

H04N21/23897 - CPC Classification

Classification description:

Selective content distribution, e.g. interactive television or video on demand [VOD]; Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof; Processing of content or additional data; Elementary server operations; Server middleware; Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams; Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption by partially encrypting, e.g. encrypting only the ending portion of a movie

Recent Application in this class:
#1
20190335213
2019-10-31

Methods, devices and system for generating a watermarked stream

#2
20180295319
2018-10-11

Signal processing apparatus, signal processing method, program, and signal transmission system

#3
20170279604
2017-09-28

Encoder, decoder and methods employing partial data encryption

#4
20160301958
2016-10-13

Session based watermarking of media content using encrypted content streams

#5
20150149785
2015-05-28

Generating fingerprinted content data for provision to receivers

#6
20140192982
2014-07-10

Transport of partially encrypted media

#7
20140033247
2014-01-30

Method and apparatus for encrypting/decrypting multimedia content to allow random access

#8
20130136429
2013-05-30

Constructing video frames and synchronizing audio data in a media player from data received via a plurality of diverse protocol stack paths

#9
20120250860
2012-10-04

ENCRYPTION PROCEDURE AND DEVICE FOR AN AUDIOVISUAL DATA STREAM

#10
20120134496
2012-05-31

Partial encryption using variable block sizes

#11
20120051539
2012-03-01

Transport of partially encrypted media

#12
20110211695
2011-09-01

Broadcasting variants of digital signals in a conditional access system

#13
20100322415
2010-12-23

Multilayer encryption of a transport stream data and modification of a transport header

#14
20100195977
2010-08-05

Constructing video frames and synchronizing audio data in a media player from data received via a plurality of diverse protocol stack paths

#15
20100189254
2010-07-29

Slice mask and moat pattern partial encryption

#16
20100172497
2010-07-08

Partial multiple encryption

#17
20100138857
2010-06-03

SYSTEMS AND METHODS FOR PROCESSING DATA PACKETS

#18
20100091887
2010-04-15

Method and system for secure distribution of audiovisual data encapsulated according to a plurality of transport protocols

#19
20090254743
2009-10-08

FLEXABLE AUDIO DATA TRANSMISSION METHOD FOR TRANSMITTING ENCRYPTED AUDIO DATA, AUDIO PROCESSING SYSTEM AND COMPUTER SYSTEM THEREOF

#20
20090225983
2009-09-10

SYSTEM AND METHOD FOR IMPROVED PROCESSING AND DECODING OF AN ENCRYPTED DIGITAL VIDEO SIGNAL

#21
20090169001
2009-07-02

System and Method for Encryption and Secure Transmission of Compressed Media

#22
20090169000
2009-07-02

Encryption device and medium, decryption device and method, data delivery device, data receiving device, and data delivery system

#23
20090080653
2009-03-26

Partial encryption storage medium

#24
20080267400
2008-10-30

Multiple partial encryption

#25
20080137847
2008-06-12

Video slice and active region based multiple partial encryption

#26
20080095364
2008-04-24

Partial encryption

#27
20080085000
2008-04-10

Content selection for partial encryption

#28
20070291942
2007-12-20

Scene change detection

#29
20070291940
2007-12-20

Selective encryption encoding

#30
20070286417
2007-12-13

Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system

#31
20070269046
2007-11-22

Receiver device for star pattern partial encryption

#32
20070263860
2007-11-15

System and method for dynamically allocating stream identifiers in a multi-encryption transport system

#33
20070204146
2007-08-30

System and method for partially encrypted multimedia stream

#34
20070160210
2007-07-12

Star pattern partial encryption method

#35
20070143784
2007-06-21

Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device

#36
20070098167
2007-05-03

Information processing device, information recording medium and information processing method, and computer program

#37
20070098166
2007-05-03

Slice mask and moat pattern partial encryption

#38
20070016802
2007-01-18

Method and apparatus for encrypting/decrypting multimedia content to allow random access

#39
20070006253
2007-01-04

PARTIAL PRE-ENCRYPTION WITH NETWORK-BASED PACKET SORTING

#40
20060269060
2006-11-30

Partial encryption and PID mapping

#41
20060262926
2006-11-23

Time division partial encryption

#42
20060245589
2006-11-02

Processing an MPEG elementary stream in a conditional access overlay environment

#43
20060233369
2006-10-19

Partial dual encrypted stream utilizing program map tables

#44
20060222178
2006-10-05

System and method for communicating encrypted data

#45
20060210075
2006-09-21

Secure device for the broadcasting, recording and viewing on demand of audiovisual works in a format of the MPEG-2 TS type

#46
20060182275
2006-08-17

Method for inserting synchronization markers into a video stream, compatible with a block cipher

#47
20060182274
2006-08-17

Method for ciphering a compressed audio or video stream with error tolerance

#48
20060153379
2006-07-13

Partial encryption and PID mapping

#49
20060115083
2006-06-01

Partial encryption and PID mapping

#50
20060088156
2006-04-27

Cfm mode system

#51
20050185795
2005-08-25

Apparatus and/or method for adaptively encoding and/or decoding scalable-encoded bitstream, and recording medium including computer readable code implementing the same

#52
20050180568
2005-08-18

Time-multiplexed multi-program encryption system

#53
20050152548
2005-07-14

Conditional access overlay partial encryption using MPEG transport continuity counter

#54
20050129233
2005-06-16

Composite session-based encryption of video on demand content