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Class Information
Number: 380/204
Name: Cryptography > Video cryptography > Copy protection or prevention > Modifying sync signal
Description: Subject matter wherein the signal for proper timing of a dynamic playback system is altered.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8631430 Enabling DRM-encrypted broadcast content through gateway into the home Jan. 14, 2014
8619987 System for transmitting the scrambled broadcast-signals in single frequency network, and a method thereof Dec. 31, 2013
8582642 Transmitting system and receiving system for processing stream, and stream processing methods thereof Nov. 12, 2013
8542829 Method of and apparatus for transmitting data Sep. 24, 2013
8533848 Method and system for producing multimedia fingerprint based on quantum hashing Sep. 10, 2013
8477937 Methods and systems for providing interference based physical-layer encryption Jul. 2, 2013
8468098 Method and system for subscription digital rights management Jun. 18, 2013
8464355 Method and device for exchanging digital content licenses Jun. 11, 2013
8429081 Techniques for securely delivering media data Apr. 23, 2013
8423775 Circumvention of dynamic, robust, embedded-signal detection Apr. 16, 2013
8392333 Method for providing protected audio/video content Mar. 5, 2013
8365296 Information processing apparatus, information processing method and computer readable medium having a program Jan. 29, 2013
8340492 Method and system for sharing annotations in a communication network Dec. 25, 2012
8280049 Method and apparatus for synthesizing copy protection for reducing/defeating the effectiveness or capability of a circumvention device Oct. 2, 2012
8204271 Digital watermark detecting apparatus Jun. 19, 2012
8189856 System and apparatus for evaluating the reliability of a watermarking technique for a video sequence May. 29, 2012
8180711 Intellectual property trading exchange May. 15, 2012
8175325 Method and apparatus for encoding/decoding symbols carrying payload data for watermarking of an audio or video signal May. 8, 2012
8135646 Content transmission apparatus Mar. 13, 2012
8131645 System and method for processing media gifts Mar. 6, 2012
8108311 Systems and methods for constructing a local electronic medical record data store using a remote personal health record server Jan. 31, 2012
8099365 Extended data collection for multi-merchant purchasing environment for downloadable products Jan. 17, 2012
8095468 Method for providing protected audio/video content Jan. 10, 2012
8086536 Location based licensing Dec. 27, 2011
8073142 Information recording/reproducing device and information recording medium Dec. 6, 2011
8074081 Method for replacing contents of a data storage unit Dec. 6, 2011
8010790 Block-level storage device with content security Aug. 30, 2011
7996335 Information processing device, contents distribution server, license server, and method and computer program Aug. 9, 2011
7987142 Intellectual property trading exchange Jul. 26, 2011
7987140 Digital rights management of captured content based on criteria regulating a combination of elements Jul. 26, 2011
7966261 Systems and methods to distribute content over a network Jun. 21, 2011
7965840 Data transmission and reception method and data transmission and reception device Jun. 21, 2011
7962424 Overdraft licenses and license distribution Jun. 14, 2011
7957530 Method and system for ensuring secure scrambling and de-scrambling and the distribution of vectoral visual sequences Jun. 7, 2011
7925885 Method for recording and reading a code of material products for protection and control of their authenticity, and a system therefor Apr. 12, 2011
7899205 Data content identification Mar. 1, 2011
7900264 Multimedia client/server system with copy protection recovery and methods for use therewith Mar. 1, 2011
7873578 Buy once play anywhere Jan. 18, 2011
7870075 System and method for managing software development Jan. 11, 2011
7865057 Method and apparatus for conveying rights across an analog video interface Jan. 4, 2011
7860809 Methods and devices for digital media distribution Dec. 28, 2010
7854011 Method of managing digital rights Dec. 14, 2010
7853121 Recording medium, reproduction device, program, and reproduction method Dec. 14, 2010
7849019 Method and arrangement for managing licenses Dec. 7, 2010
7840487 Digital content encryption and decryption method and workflow system using digital content Nov. 23, 2010
7827111 Recording medium reproducer, cryptocommunication system and program license system Nov. 2, 2010
7817902 Apparatus and method of generating video-reproducing clock signal from 480p signal Oct. 19, 2010
7792293 Method and apparatus for modifying a subsequently generated control command in a content control system Sep. 7, 2010
7684567 Smartcard dynamic management Mar. 23, 2010
7672454 Method for copy protection of digital content Mar. 2, 2010

1 2 3 4

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