Patent
Time division partial encryption
Brant L. Candelore,Robert Allan Unger,Henry Derovanessian +2 more
- 13 Dec 2002
136
TL;DR: In this paper, a time slicing technique is used to encrypt portions of a TV program on a time allocated basis, thus allowing a larger number of programs to be carried over the same bandwidth while permitting coexistence of multiple conditional access systems in a single CATV system.
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Abstract: An encryption arrangement for multiple encryption of TV programs. A system (100) according to embodiments of the present invention multiple encrypts only a portion of the data required for full presentation of a TV program to permit coexistence of multiple conditional access encryption systems (118, 124) associated with multiple manufacturer's set-top boxes (36, 136) within a single system. In one embodiment, a time slicing technique is used to encrypt portions of a program on a time allocated basis. By only encrypting a portion of the program, dramatically less bandwidth is consumed than the alternate of multiple encryption of all program data, thus permitting a larger number of programs to be carried over the same bandwidth while permitting coexistence of multiple conditional access systems in a single CATV system (32).
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Citations
Patent
Critical packet partial encryption
Robert Allan Unger,Brant L. Candelore +1 more
- 13 Dec 2002
TL;DR: In this paper, the authors proposed an encryption arrangement for multiple encryption of television programs, where only critical packets such as those carrying a payload incorporating packetized elementary stream header information are encrypted.
225
Patent
Content distribution for multiple digital rights management
Brant L. Candelore
- 08 Sep 2003
TL;DR: In this paper, a method and apparatus for enabling the use of multiple digital rights management scenarios (DRM) is presented, where unencrypted data representing digital content is examined to identify at least segments of content for encryption and then duplicated and encrypted using a first encryption method associated with a first DRM to produce first encrypted segments.
202
Patent
Multi-source bridge content distribution system and method
Robin Ross Cooper,Thomas A. Munro +1 more
- 21 Dec 2006
TL;DR: In this paper, a multi-source bridge content distribution system links multiple content owners with access network operators or content distribution providers leasing space on access networks so that multi-media content can be provided from multiple content providers to consumers through a multiuser bridge or data center.
186
Patent
Networked subscriber television distribution
Samuel H. Russ,David B. Lett,Jonathan A. Robinson,Michael A. Gaul +3 more
- 13 Nov 2001
TL;DR: In this article, a master device interactively distributes a television signal to a remote device for remote display with low latency between a user input and a TV signal change, where the master device can control the remote device with a remote controller.
185
Patent
Content replacement by PID mapping
Brant L. Candelore,Leo M. Pedlow,Jon D. Garrett +2 more
- 14 Apr 2008
TL;DR: A method and apparatus for content substitution, consistent with certain embodiments of the present invention involves receiving data representing content, the data having at least first and second packet identifiers (PIDs) associated with the content and placing content having the first PID into a data stream as discussed by the authors.
183
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Patent
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83
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