System and method for indexing and tracking multimedia streams for wireless multimedia transmission
First Claim
1. A communication method for wireless transmission of a multimedia stream having data chunks carrying information related to at least first and second programs and global index chunks carrying indexing information related to the data chunks, comprising:
- in at least some data chunks, establishing respective index blocks, the index blocks indicating times associated with individual program information in subsequent data chunks; and
at a communication level other than an application level, using information in the index blocks to cause at least portions of a wireless receiver to be energized substantially only during times associated with a desired program and index blocks.
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Abstract
In addition to global index chunks that indicate the order of program portions in a multimedia stream carrying multiple multiplexed programs, index blocks are provided in data chunks of the stream that point to times when particular program portions arrive. This information can be used at the physical or transport layer of a wireless battery-powered receiver by, e.g., a simple state machine to energize the analog receiving circuitry only for as long as necessary to receive information pertaining to a desired program, thereby conserving battery power.
11 Citations
30 Claims
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1. A communication method for wireless transmission of a multimedia stream having data chunks carrying information related to at least first and second programs and global index chunks carrying indexing information related to the data chunks, comprising:
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in at least some data chunks, establishing respective index blocks, the index blocks indicating times associated with individual program information in subsequent data chunks; and
at a communication level other than an application level, using information in the index blocks to cause at least portions of a wireless receiver to be energized substantially only during times associated with a desired program and index blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless receiver of multimedia programs for displaying at least a desired one of the programs, comprising:
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at least one analog receiver; and
at least one receiver controller receiving information in data chunks, the controller using the information to cause the receiver to be energized substantially only during periods of reception of data pertaining to the desired one of the programs. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A transmitting system for transmitting a multimedia stream including data chunks carrying information pertaining to at least first and second programs and global index chunks, the transmitting system comprising:
means for establishing, in at least some data chunks, at least two timing blocks respectively indicating times associated with the first and second programs, whereby a receiving system can use the times to selectively energize at least a receiver of the receiving system. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A system for wireless transmission of a multimedia stream having data chunks carrying information related to at least first and second programs and global index chunks carrying indexing information related to the data chunks, comprising:
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means for establishing, in at least some data chunks, respective index blocks, the index blocks indicating times associated with individual program information in subsequent data chunks; and
means for using, at a communication level other than an application level, information in the index blocks to cause at least portions of a wireless receiver to be energized substantially only during times associated with a desired program and index blocks. - View Dependent Claims (29, 30)
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Specification