Method and apparatus for content navigation in digital broadcast radio
First Claim
1. A device comprising:
- a receiver for receiving content containing at least one of commercial content, non-commercial content, or both on multiple broadcast streams contained within a single channel;
a first circular buffer for storing at least portions of a plurality of the multiple broadcast streams containing the at least one of commercial content, non-commercial content, or both;
a content selector for producing selected content by selecting portions of the multiple broadcast streams from the first circular buffer;
a second circular buffer for storing the selected content; and
a processor coupled to the first circular buffer and the second circular buffer, wherein the processor is operable to;
selectively navigate among the multiple broadcast streams stored in the first circular buffer and selectively navigate among the at least one of commercial content, non-commercial content, or both stored in the first circular buffer and the second circular buffer.
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Abstract
A low cost DAB multichannel receiver comprising a simplified buffering method for buffering content segments from multiple streams contained within the DAB channel, where the receiver enables the listener to navigate buffered content segments from multiple streams within the DAB channel while enabling the broadcaster to control the timeshift of commercial content to the receiver output stream. The receiver'"'"'s buffered content grows over time and is cleared when tuning away from the channel, thus encouraging listeners desiring to tune in to new content to instead navigate to new buffered segments. Broadcaster control of the listener experience may be enabled by setting content control fields which are observed in the broadcast by the multichannel receivers. Additional embodiments are disclosed.
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Citations
13 Claims
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1. A device comprising:
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a receiver for receiving content containing at least one of commercial content, non-commercial content, or both on multiple broadcast streams contained within a single channel; a first circular buffer for storing at least portions of a plurality of the multiple broadcast streams containing the at least one of commercial content, non-commercial content, or both; a content selector for producing selected content by selecting portions of the multiple broadcast streams from the first circular buffer; a second circular buffer for storing the selected content; and a processor coupled to the first circular buffer and the second circular buffer, wherein the processor is operable to; selectively navigate among the multiple broadcast streams stored in the first circular buffer and selectively navigate among the at least one of commercial content, non-commercial content, or both stored in the first circular buffer and the second circular buffer. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12)
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7. A multichannel broadcast system-comprising:
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a transmitter; at least one encoder coupled to the transmitter, wherein content segments including commercial audio, non-commercial audio, supplemental content and control information are multiplexed on each in-band on-channel (IBOC) channel of a multichannel digital audio broadcast (DAB); wherein the multichannel broadcast once demodulated and decoded enables selective navigation among the commercial audio, the non-commercial audio and the supplemental content without changing an IBOC channel; wherein, after the content from at least portions of the DAB has been locally buffered in at least one receiver, the control information selects one of a pre-set number of content selection algorithms used for navigation; and where the control information selects one of a set of content navigation algorithms, navigation algorithms navigate to a next buffered content segment based on prioritization of transport parameters including but not limited to a segment source stream and a segment order of reception.
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8. A method of content navigation in a digital audio broadcast radio, comprising:
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receiving content from a multichannel signal that is broadcast containing commercial content and non-commercial content on multiple broadcast streams contained within a single channel and wherein one or more of the broadcast streams among the multiple broadcast streams contains supplemental content; buffering in a first circular buffer at least portions of the multiple broadcast streams containing the commercial content, non-commercial content, and the supplemental content; selecting portions of the multiple broadcast streams from the first circular buffer; buffering in a second circular buffer the selected portions; selectively navigating among the commercial content, the non-commercial content and the supplemental content stored in the first circular buffer and the second circular buffer without changing a channel; and time shifting triggering commercial content play based on the selective navigation.
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13. A multichannel broadcast system-comprising:
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a transmitter; at least one encoder coupled to the transmitter, wherein content segments including commercial audio, non-commercial audio, supplemental content and control information are multiplexed on each in-band on-channel (IBOC) channel of a multichannel digital audio broadcast (DAB); wherein the multichannel broadcast once demodulated and decoded enables selective navigation among the commercial audio, the non-commercial audio and the supplemental content without changing an IBOC channel; and wherein, after the content has been locally buffered in at least one receiver, the control information for a commercial audio segment controls the at least one receiver to block content navigation the first time the commercial audio segment is played on the at least one receiver, flag the commercial audio segment in memory as being played and enable content navigation during any subsequent replay of the commercial audio segment if the flag has been set.
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Specification