Intelligent use of encoder unused bandwidth in a digital audio broadcast
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United States of America Patent
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Issued Date -
Apr 1, 2004
app pub date -
Sep 27, 2002
filing date -
Sep 27, 2002
priority date (Note) -
Abandoned
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Abstract
Datacasting bandwidth enhancements are accomplished using a perceptual audio coder (PAC) that indicates, to a push-pull gateway (PPG), the availability of deterministic and opportunistic bandwidth. In case of real-time programs, data is pulled from a pre-managed datacasting service queue, and the deterministic bandwidth is used for real-time low bit-rate program related information and the opportunistic bandwidth is used for transmission of encoded non-real-time data content. For recorded content, further enhancement is achieved by preprocessing the audio song. The PAC identifies data rate (e.g., in kbps) and the deterministic and opportunistic deterministic bandwidth available (with delay variance). This information is conveyed to a push-pull gateway which performs management of data content destined for the deterministic opportunistic queue.
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