Invention Grant
- Patent Title: Methods and apparatus to reduce channel switching time
- Patent Title (中): 降低通道切换时间的方法和设备
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Application No.: US12353885Application Date: 2009-01-14
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Publication No.: US08625792B2Publication Date: 2014-01-07
- Inventor: An Mei Chen , Jangwon Lee
- Applicant: An Mei Chen , Jangwon Lee
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Fulbright & Jaworski LLP
- Main IPC: H04N7/38
- IPC: H04N7/38

Abstract:
Methods and apparatus to reduce channel switching time. A method for channel switching includes bundling entitlement control messages (ECMs) to generate bundled ECMs that comprise decryption keys associated with a first content channel and one or more additional content channels, respectively, and transmitting the bundled ECMs with the first content channel. An apparatus for channel switching includes key acquisition logic configured to receive bundled ECMs that comprise decryption keys associated with a first content channel and one or more additional content channels, respectively, processing logic configured to receive a request to render a second content channel that is part of the one or more additional content channels, and decryption logic configured to utilize a selected decryption key obtained from the bundled ECMs to decrypt the second content channel.
Public/Granted literature
- US20090183196A1 METHODS AND APPARATUS TO REDUCE CHANNEL SWITCHING TIME Public/Granted day:2009-07-16
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