Wireless output input device player
First Claim
1. A wireless output input device player for storing and/or receiving audio and relaying an analog frequency modulated radio frequency signal from a digital audio source to an external FM receiver capable of receiving a plurality of channel frequencies, said player comprising:
- an integrated FM transmitter, an integrated FM receiver having a stereo audio output, processing means for digitally decoding audio from said digital audio source and to digitally stereo encode audio to preserve the digital stream prior to stereo modulation at the FM transmitter, means for converting the digital output of the processing means to an analog signal and relaying the signal to the FM transmitter for transmission to said external receiver, means for scanning the channel frequencies of the FM receiver for a channel frequency having the least interference, means for automatically tuning the FM transmitter to said channel frequency, and means for indicating said channel frequency of least interference on said player, whereby the external FM receiver may be tuned to said channel frequency for receiving the output of the transmitter.
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Accused Products
Abstract
A wireless output input device (WOID) digital audio player for storing and/or receiving digital audio and preserving the digital stream without the inherent distortion of translating the stream to analog prior to modulation and transmission, which includes an FM receiver, and an FM transmitter for transmitting the audio to an external FM radio or receiver. The device automatically and periodically scans a plurality of channels on the FM band to determine the channel having the least amount of interference and then tunes the FM transmitter to the frequency of that channel and displays the channel to which the external receiver should be tuned. A remote control may be provided to selectively transmit signals to the player'"'"'s FM receiver for controlling operation of the player.
120 Citations
20 Claims
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1. A wireless output input device player for storing and/or receiving audio and relaying an analog frequency modulated radio frequency signal from a digital audio source to an external FM receiver capable of receiving a plurality of channel frequencies, said player comprising:
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an integrated FM transmitter, an integrated FM receiver having a stereo audio output, processing means for digitally decoding audio from said digital audio source and to digitally stereo encode audio to preserve the digital stream prior to stereo modulation at the FM transmitter, means for converting the digital output of the processing means to an analog signal and relaying the signal to the FM transmitter for transmission to said external receiver, means for scanning the channel frequencies of the FM receiver for a channel frequency having the least interference, means for automatically tuning the FM transmitter to said channel frequency, and means for indicating said channel frequency of least interference on said player, whereby the external FM receiver may be tuned to said channel frequency for receiving the output of the transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless output input device player for relaying a digitally synthesized analog frequency modulated radio frequency signal to an external FM receiver, said player comprising:
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a digital storage device having means to decode compressed audio using a processor, said processor having adequate processor power to provide necessary filtering, up sampling, modulation, pilot tone and sub-carrier generation for stereophonic signal generation, an integrated FM transmitter for modulating the digitally encoded stereo or monaural output of the storage device to said external receiver, said player having means for digitally stereo encoding audio to preserve the digital stream prior to stereo modulation at the FM transmitter, and a digital frequency synthesizer under control of said processor providing FM broadcast band coverage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A wireless output input device player for relaying a digitally synthesized analog frequency modulated radio frequency signal to an external FM receiver, said player comprising:
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a digital storage device having means to decode compressed audio using a processor, said processor having adequate processor power to provide necessary filtering, up sampling, modulation, pilot tone and sub-carrier generation for stereophonic signal generation, an integrated FM transmitter for modulating the digitally encoded stereo or monaural output of the storage device to said external receiver, said player having means for digitally stereo encoding audio to preserve the digital stream prior to stereo modulation at the FM transmitter, and a digital frequency synthesizer providing FM broadcast band coverage.
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20. A wireless output input device player for relaying a digitally synthesized analog frequency modulated radio frequency signal to an external FM receiver, said player comprising:
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a digital storage device having means to decode compressed audio using a processor, said processor having adequate processor power to provide necessary filtering, up sampling, modulation, pilot tone and sub-carrier generation for stereophonic signal generation, said sampling having a sample rate conversion of 5/2 that is used to up-sample the audio from 44.117 kHz to 110.294 kHz, an integrated FM transmitter for modulating the digitally encoded stereo or monaural output of the storage device to said external receiver, and a digital frequency synthesizer under control of said processor providing FM broadcast band coverage.
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Specification