SYSTEM AND METHOD FOR SYNCHRONIZING OPERATIONS AMONG A PLURALITY OF INDEPENDENTLY CLOCKED DIGITAL DATA PROCESSING DEVICES
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Accused Products
Abstract
An audio information source interface that receives first audio information from an audio information source directly connected to the audio playback device; an ADC configured to sample the first audio information; a network interface configured to connect the audio playback device to a network and to receive packets from the network containing second audio information and playback timing information from a network audio information source; a DAC for generating an analog audio signal based on either the first or second audio information; an audio amplifier interconnected with the DAC and configured to amplify the audio signal; an audio reproduction device interface interconnected with the audio amplifier; and, a control module configured to receive commands via the network interface and to provide to the DAC one of the first or second audio information.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. An audio playback device comprising:
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an audio information source interface configured to received first audio information from an audio information source directly connected to the audio playback device; an analog to digital converter configured to sample the first audio information; a network interface configured to connect the audio playback device to a network and configured to receive packets from the network containing second audio information and playback timing information from a network audio information source; a digital to analog converter (DAC) for generating an analog audio signal based on either the first audio information or the second audio information; an audio amplifier interconnected with the DAC and configured to amplify the audio signal; an audio reproduction device interface interconnected with the audio amplifier; and
,a control module configured to receive commands via the network interface and to provide to the DAC, based on the received commands, one of the first audio information or the second audio information. - View Dependent Claims (22, 23, 24, 25, 26, 27, 32)
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28. A method comprising:
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receiving first audio information at an audio playback device from an audio information source connected to the audio playback device; generating a first analog audio signal for playback based on the first audio information; receiving second audio information and playback timing information contained in data packets from a network audio information source via a network interface; receiving commands contained in data packets via the network interface; and
,based on the received commands, generating a second analog audio signal for playback based on the second audio information, and terminating the playback of the first audio signal. - View Dependent Claims (29, 30, 31, 33, 34)
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35. A tangible computer-readable memory having instructions stored thereon that when executed cause a device to:
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receive first audio information in the form of digital samples derived from an audio information source connected to an audio playback device; provide the first audio information to a digital to analog converter to generate a first analog audio signal for playback; receive second audio information and playback timing information contained in data packets from a network audio information source via a network interface; receive commands contained in data packets via the network interface; and
,based on the received commands, provide the second audio information to a digital to analog converter (DAC) to generate a second analog audio signal for playback. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification