Method and apparatus for audio and video synchronization timestamp rollover correction
First Claim
Patent Images
1. An apparatus comprising:
- a synchronizer having a processor,the synchronizer configured to provide synchronization information for synchronizing a video stream with an audio stream during a broadcast thereof using timestamps irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams,wherein the synchronization information specifies a timing relationship between at least one audio timestamp and at least one video timestamp included in the audio stream and the video stream, respectively,the synchronization information encoded for an out of band transmission with respect to the broadcast of the audio and video streams,the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream,the video stream timestamp and the audio stream timestamp being encoded for transmission.
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Abstract
There are provided methods and apparatus for audio and video synchronization timestamp rollover correction. A synchronization apparatus includes a synchronizer for providing synchronization information for synchronizing a video stream with an audio stream during any point in a broadcast thereof irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps. The synchronization information is encoded for an out of band transmission with respect to the broadcast of the audio and video streams.
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Citations
33 Claims
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1. An apparatus comprising:
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a synchronizer having a processor, the synchronizer configured to provide synchronization information for synchronizing a video stream with an audio stream during a broadcast thereof using timestamps irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams, wherein the synchronization information specifies a timing relationship between at least one audio timestamp and at least one video timestamp included in the audio stream and the video stream, respectively, the synchronization information encoded for an out of band transmission with respect to the broadcast of the audio and video streams, the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream, the video stream timestamp and the audio stream timestamp being encoded for transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A synchronization method, comprising:
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providing, using a processor, synchronization information for synchronizing a video stream with an audio stream during a broadcast thereof using timestamps irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams, wherein the synchronization information specifies a timing relationship between at least one audio time stamp and at least one video timestamp included in the audio stream and the video stream, respectively, the synchronization information encoded for an out of band transmission with respect to the broadcast of the audio and video streams, the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream, the video stream timestamp and the audio stream timestamp being encoded for transmission. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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a synchronizer having a processor, the synchronizer configured to synchronize a video stream and an audio stream using synchronization information received in an out of band transmission with respect to a broadcast of the video stream and the audio stream, wherein the synchronization information specifies a timing relationship between at least one audio time stamp and at least one video timestamp included in the audio stream and the video stream, respectively, wherein the synchronizer is adapted to use the synchronization information to synchronize the video stream and the audio stream of the broadcast using timestamps irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams, the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream, the video stream timestamp and the audio stream timestamp generated remotely and received in a transmission. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A synchronization method, comprising:
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synchronizing, using a processor, a video stream and an audio stream using synchronization information received in an out of band transmission with respect to a broadcast of the video stream and the audio stream, wherein the synchronization information specifies a timing relationship between at least one audio time stamp and at least one video timestamp included in the audio stream and the video stream, respectively, and wherein the synchronization information is adapted to synchronize the video stream and the audio stream of the broadcast using timestamps, irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams, the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream, the video stream timestamp and the audio stream timestamp generated remotely and received in a transmission. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A non-transitory storage media having information stored thereon, comprising:
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synchronization information for synchronizing a video stream with an audio stream during a broadcast thereof using timestamps irrespective of whether the video stream and the audio stream have different rollover points for their respective timestamps and without utilization of additional video and audio streams, wherein the synchronization information specifies a timing relationship between at least one audio time stamp and at least one video timestamp included in the audio stream and the video stream, respectively, the synchronization information encoded for an out of band transmission with respect to the broadcast of the audio and video streams, the timestamps including a video stream timestamp for the video stream and an audio stream timestamp for the audio stream, the video stream timestamp and the audio stream timestamp being encoded for transmission.
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Specification