Descrambling of multiple television channels

Patent metadata

Field	Value
Publication number	US-8959544-B2
Application number	US-201313757168-A
Country	US
Kind code	B2
Filing date	Feb 1, 2013
Priority date	Mar 15, 2012
Publication date	Feb 17, 2015
Grant date	Feb 17, 2015

Abstract

Various arrangements for descrambling multiple television channels concurrently are presented. A set-top box may receive a first plurality of television channels as scrambled data packets. A previously-received locally-stored networking information table may be accessed that associates each of the multiple television channels with the same entitlement control message, as indicated by a packet identifier. An entitlement control message having the same packet identifier may be received. A smartcard may be used to decrypt the entitlement control message having the same packet identifier to obtain a first control word and a second control word. Scrambled data packets corresponding to the multiple television channels may be descrambled using the first control word and the second control word. These television channels may be stored and/or output for presentation by the set-top box.

First claim

What is claimed is:

1. A television receiver, comprising:
one or more processors; and
a memory communicatively coupled with and readable by the one or more processors and having stored therein processor-readable instructions which, when executed by the one or more processors, cause the one or more processors to:
receive a first plurality of television channels as scrambled data packets;
access a network information table stored locally, wherein:
the network information table…

Assignees

• Echostar Technologies Llc

Inventors

• Kummer David
• Schaefer Germar

Classifications

• H04N21/4622

  Electricity · mapped topic

• H04N21/4405

  Electricity · mapped topic

• H04N21/4345

  Electricity · mapped topic

• H04N21/4623

  Electricity · mapped topic

• H04N21/26606

  Electricity · mapped topic