Audio/video processing unit and control method thereof
First Claim
1. An audio/video processing main unit which conducts audio processing and video processing,the audio/video processing main unit comprising:
- a receiving unit receiving an AV stream including video and audio, from an external device via a communication network;
a demux unit separating the AV stream into a video stream including the video and an audio stream including the audio;
a video processing unit processing the video stream so as to generate a video signal;
an audio acquisition unit acquiring an audio stream including at least a part of the audio, from the AV stream supplied to the receiving unit;
a transmitting for unit transmitting the audio stream acquired by the audio acquisition unit, to at least one external device via the communication network;
a stream buffer which temporarily stores the AV stream supplied to the receiving unit;
an AV clock unit indicating a time for determining a timing to output the AV stream;
an AV clock adjusting unit adjusting the AV clock unit in such a manner as to cause the AV clock unit to be in synchronization with the AV stream; and
a comparing unit supplying at least a part of the AV stream to the demux unit, in case where an AV stream output time of the AV stream is equal to or later than the time indicated by the AV clock unit,the AV stream including information of the AV stream output time.
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Accused Products
Abstract
A home theater includes a main unit section and at least one speaker section. The main unit section includes a communication section which receives an AV stream from an AV stream transmission device and via a communication network, a demux section which separates the AV stream into a video stream and an audio stream, a video processing means which processes the video stream so as to generate a video signal, an audio processing section which processes the audio stream so as to generate an audio signal, and an audio acquisition section which acquires an audio stream which includes at least a part of the audio of the AV stream. The communication section transmits the audio stream acquired by the audio acquisition section to the speaker section, via the communication network.
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Citations
25 Claims
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1. An audio/video processing main unit which conducts audio processing and video processing,
the audio/video processing main unit comprising: -
a receiving unit receiving an AV stream including video and audio, from an external device via a communication network; a demux unit separating the AV stream into a video stream including the video and an audio stream including the audio; a video processing unit processing the video stream so as to generate a video signal; an audio acquisition unit acquiring an audio stream including at least a part of the audio, from the AV stream supplied to the receiving unit; a transmitting for unit transmitting the audio stream acquired by the audio acquisition unit, to at least one external device via the communication network; a stream buffer which temporarily stores the AV stream supplied to the receiving unit; an AV clock unit indicating a time for determining a timing to output the AV stream; an AV clock adjusting unit adjusting the AV clock unit in such a manner as to cause the AV clock unit to be in synchronization with the AV stream; and a comparing unit supplying at least a part of the AV stream to the demux unit, in case where an AV stream output time of the AV stream is equal to or later than the time indicated by the AV clock unit, the AV stream including information of the AV stream output time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An audio processing main unit which conducts audio processing and transmits an audio stream, comprising:
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an obtaining unit acquiring an audio stream including at least audio; an audio processing unit subjecting the acquired audio stream to the audio processing, so as to output an audio signal; an audio acquisition unit acquiring, from the acquired audio stream, an audio stream including at least a part of the audio; an audio clock unit indicating a time for determining a timing to output the audio; a sampling unit sampling the time indicated by the audio clock unit; a transmitting unit transmitting the audio stream acquired by the audio acquisition unit and information of the time sampled by the sampling unit, to at least one external device via a communication network; a stream buffer which temporarily stores the audio stream acquired by the obtaining unit; an audio clock adjusting unit adjusting the audio clock unit in such a manner as to cause the audio clock unit to be in synchronization with the audio stream acquired by the obtaining unit; and a comparing unit for transmitting at least a part of the audio stream acquired by the obtaining unit to the audio processing unit, when an audio stream output time of the audio stream acquired by the obtaining unit is equal to or later than the time indicated by the audio clock unit, the audio stream acquired by the obtaining unit including information of the audio stream output time.
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16. An audio processing terminal device, comprising:
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a receiving unit receiving an audio stream including audio, from an external device via a communication network; an audio processing unit processing the audio stream so as to generate an audio signal; an audio clock unit indicating a time for determining a timing to output the audio; an audio clock adjusting unit adjusting the audio clock unit in such a manner as to cause the audio clock unit to be in synchronization with the audio stream; a stream buffer which temporarily stores the audio stream supplied to the receiving unit; and a comparing unit for transmitting at least a part of the audio stream to the audio processing unit, when an audio stream output time of the audio stream is equal to or later than the time indicated by the audio clock unit, the audio stream including information of the audio stream output time. - View Dependent Claims (17, 18)
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19. An audio/video processing system in which an audio/video processing main unit conducting video processing and audio processing is connected, by a communication network, to at least one audio processing terminal device conducting audio processing,
the audio/video processing main unit including: -
a receiving unit receiving an AV stream including video and audio from an external device via a communication network; a demux unit separating the AV stream into a video stream including the video and an audio stream including the audio; a video processing unit processing the video stream so as to generate a video signal; an audio acquisition unit acquiring an audio stream including at least a part of the audio, from the AV stream supplied to the receiving unit; a transmitting unit transmitting the audio stream acquired by the audio acquisition unit, to said at least one audio processing terminal device via the communication network; a stream buffer which temporarily stores the AV stream supplied to the receiving unit; an AV clock unit indicating a time for determining a timing to output the AV stream; an AV clock adjusting unit adjusting the AV clock unit in such a manner as to cause the AV clock unit to be in synchronization with the AV stream; and a comparing unit supplying at least a part of the AV stream to the demux unit, in case where an AV stream output time of the AV stream is equal to or later than the time indicated by the AV clock unit, the AV stream including information of the AV stream output time, said at least one audio processing terminal device including; a receiving unit receiving the audio stream from the audio/video processing main unit via the communication network; an audio processing unit processing the audio stream so as to generate an audio signal; an audio clock unit indicating a time for determining a timing to output the audio; an audio clock adjusting unit adjusting the audio clock unit in such a manner as to cause the audio clock unit to be in synchronization with the audio stream; a stream buffer which temporarily stores the audio stream supplied to the receiving unit; and a comparing unit for transmitting at least a part of the audio stream to the audio processing unit, when an audio stream output time of the audio stream is equal to or later than the time indicated by the audio clock unit, the audio stream including information of the audio stream output time.
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20. A control method of an audio/video processing main unit which conducts video processing and audio processing, comprising the steps of:
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(i) receiving an AV stream including video and audio, from an external device via a communication network; (ii) acquiring, from the supplied AV stream, an audio stream including at least a part of the audio; (iii) transmitting the acquired audio stream to at least one external device, via the communication network; (iv) temporarily storing the received AV stream; (v) adjusting an AV clock unit in such a manner as to cause the AV clock unit to be in synchronization with the audio stream, the AV clock unit indicating a time for determining a timing to output the AV stream; (vi) separating at least a part of the AV stream into a video stream including the video and an audio stream including the audio, when an AV stream output time of the AV stream is equal to or later than the time indicated by the AV clock unit; (vii) processing the video stream so as to generate a video signal, (viii) the AV stream including information of the AV stream output time. - View Dependent Claims (21)
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22. A control method of an audio processing terminal device which conducts audio processing and includes an audio clock unit for indicating a time for determining a timing to output audio,
the method comprising the steps of: -
receiving an audio stream including the audio, from an external device via a communication network; temporarily storing the received audio stream; adjusting the audio clock unit in such a manner as to cause the audio clock unit to be in synchronization with the audio stream; processing at least a part of the audio stream so as to generate an audio signal, when an audio stream output time of the audio stream is equal to or later than the time indicated by the adjusted audio clock unit, the audio stream including information of the audio stream output time.
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23. A non-transitory computer-readable storage medium storing an audio/video processing main unit control program for operating an audio/video processing main unit which conducts video processing and audio processing,
the audio/video processing main unit including: -
a receiving unit receiving an AV stream including video and audio from an external device via a communication network; a demux unit separating the AV stream into a video stream including the video and an audio stream including the audio; a video processing unit processing the video stream so as to generate a video signal; an audio acquisition unit acquiring an audio stream including at least a part of the audio, from the AV stream supplied to the receiving unit; and a transmitting unit transmitting the audio stream acquired by the audio acquisition unit, to at least one external device via the communication network; a stream buffer which temporarily stores the AV stream supplied to the receiving unit; an AV clock unit indicating a time for determining a timing to output the AV stream; an AV clock adjusting unit adjusting the AV clock unit in such a manner as to cause the AV clock unit to be in synchronization with the AV stream; and a comparing unit supplying at least a part of the AV stream to the demux unit, in case where an AV stream output time of the AV stream is equal to or later than the time indicated by the AV clock unit, the AV stream including information of the AV stream output time, and the program causing a computer to function as the units of the audio/video processing main unit. - View Dependent Claims (24)
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25. A non-transitory computer-readable storage medium which stores an audio processing terminal device control program for operating an audio processing terminal device which conducts audio processing,
the audio processing terminal device including: -
a receiving unit receiving an audio stream including audio, from an external device via a communication network; an audio processing unit processing the audio stream so as to generate an audio signal; an audio clock unit indicating a time for determining a timing to output the audio; and an audio clock adjusting unit adjusting the audio clock unit in such a manner as to cause the audio clock unit to be in synchronization with the audio stream, a stream buffer which temporarily stores the audio stream supplied to the receiving unit; a comparing unit for transmitting at least a part of the audio stream to the audio processing unit, when an audio stream output time of the audio stream is equal to or later than the time indicated by the audio clock unit, the audio stream including information of the audio stream output time, and the program causing a computer to function as the units of the audio processing terminal device.
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Specification