Method and device for low-power FM transmission of audio data to RDS capable FM radio receiver
First Claim
1. A method performed by an apparatus, comprising:
- scanning a frequency range to detect available radio frequencies on which no broadcast transmissions or interfering signals are currently received;
storing detected available frequencies;
selecting one of said stored frequencies;
receiving audio data from an audio player;
analyzing said audio data received from said audio player device to detect an audio volume;
modulating said received audio data with frequency modulation;
transmitting frequency modulated audio data on said selected frequency;
interrupting the transmitting of said frequency modulated audio data, wherein said interrupting is performed if said audio volume falls below a pre-determined threshold;
detecting if the frequency presently used for said transmitting is still available; and
alternativelyif the frequency presently used is still available, resuming said transmitting of said audio data on the frequency presently used;
orif the frequency presently used is not available anymoreselecting the at least one alternative frequency;
switching to said selected alternative frequency; and
resuming said transmitting of said audio data using said selected alternative frequency.
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Accused Products
Abstract
Method for controlling radio transmission of audio data, wherein audio data from an audio player device is FM-modulated and transmitted to be received by an RDS capable FM radio receiver, comprising selecting at least one frequency, transmitting said selected frequency as Alternate Frequency of the RDS system to be received by said RDS capable FM radio receiver, receiving an input and responsive thereto interrupting said audio transmission, switching to said transmitted frequency, and resuming transmission of said audio data using said transmitted frequency.
It is also provided an electronic device for radio transmission of audio data from an audio player device for being received by an RDS capable FM radio receiver, comprising a controller adapted for selecting at least one FM radio frequency, an audio input interface for receiving audio data from said audio player device, a transmitter adapted for modulating received audio data with FM modulation, and transmitting said FM modulated audio data on a frequency selected by said controller, and an input element for receiving an input, wherein said controller is further adapted for controlling said transmitter to transmit said selected FM radio frequency as Alternate Frequency of the RDS system, detecting an input to said input element and responsive thereto interrupting the transmission of said audio data, switching to said transmitted frequency, and resuming transmission of said audio data using said transmitted frequency.
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Citations
16 Claims
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1. A method performed by an apparatus, comprising:
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scanning a frequency range to detect available radio frequencies on which no broadcast transmissions or interfering signals are currently received; storing detected available frequencies; selecting one of said stored frequencies; receiving audio data from an audio player; analyzing said audio data received from said audio player device to detect an audio volume; modulating said received audio data with frequency modulation; transmitting frequency modulated audio data on said selected frequency; interrupting the transmitting of said frequency modulated audio data, wherein said interrupting is performed if said audio volume falls below a pre-determined threshold; detecting if the frequency presently used for said transmitting is still available; and
alternativelyif the frequency presently used is still available, resuming said transmitting of said audio data on the frequency presently used; or if the frequency presently used is not available anymore selecting the at least one alternative frequency; switching to said selected alternative frequency; and resuming said transmitting of said audio data using said selected alternative frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, comprising:
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a receiver adapted for scanning a frequency range to detect available radio frequencies on which no broadcast transmissions or interfering signals are currently received; a memory device for storing detected available frequencies; a controller adapted for selecting one of said stored frequencies; an audio input interface for receiving audio data from an audio player device; an analyzer component adapted for analyzing said audio data received from said audio player device to detect an audio volume and indicating to said controller when said audio volume falls below a pre-determined threshold to enable the controller to interrupt the transmitting of said audio data in response thereto; and a transmitter being configured, in cooperation with said controller, for modulating received audio data with frequency modulation; transmitting frequency modulated audio data on a frequency selected by said controller; interrupting the transmitting of said frequency modulated audio data; detecting if the frequency presently used for said transmitting is still available; and
alternatively;if the frequency presently used is still available, resuming said transmitting of said audio data on the frequency presently used; or if the frequency presently used is not available anymore selecting the at least one alternative frequency; switching to said selected alternative frequency; and resuming said transmitting of said audio data using said selected alternative frequency. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification