Transmission of digital data over a wireless network utilizing synthetic voice generation of DTMF tones
First Claim
1. In a digital wireless communication system in which audio information is digitized and transmitted over a communications channel to a remote location, a method for robustly transmitting digital information over the digital wireless communications system, comprising the steps of:
- converting the digital information into a stream of audio tones using a speech synthesizer;
transmitting the stream of audio tones over the communication channel to the remote location; and
, detecting and decoding the transmitted stream of audio tones at the remote location to recover the digital information, whereby the use of the speech synthesizer to create the audio tones increases the robustness of the transmission.
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Accused Products
Abstract
In a wireless transceiver in which digital data is to be transmitted over a wireless network, digital data such as from a GPS receiver is encoded by a synthetic speech synthesizer, which generates DTMF tones that are injected into the audio channel. For digital wireless phones in which audio signals are digitized via compression and expansion, the utilization of the speech synthesizer provides tones of such clarity and purity that they are unaffected during the compression and expansion process.
10 Citations
16 Claims
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1. In a digital wireless communication system in which audio information is digitized and transmitted over a communications channel to a remote location, a method for robustly transmitting digital information over the digital wireless communications system, comprising the steps of:
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converting the digital information into a stream of audio tones using a speech synthesizer;
transmitting the stream of audio tones over the communication channel to the remote location; and
,detecting and decoding the transmitted stream of audio tones at the remote location to recover the digital information, whereby the use of the speech synthesizer to create the audio tones increases the robustness of the transmission. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 15, 16)
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6. The method of claim 6, and further including the step of transmitting the digital information in an emergency situation where robustness of transmission of the position information is paramount.
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14. A system for robustly transmitting digital data over a digital wireless network in which a communication channel is used to transmit voice communications, comprising:
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a wireless transceiver having an audio modulation section in which an audio input is converted into a digital signal transmitted over said communications channel from said transceiver to a remote location;
a speech synthesizer having an audio output coupled to said modulation section; and
,a digital information source coupled to said speech synthesizer for causing said speech synthesizer to output a stream of audio tones corresponding to said digital information; and
,a detector at said remote location for decoding said transmitted audio tones, whereby the generation of said audio tones by a speech synthesizer increases the robustness of the transmission.
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Specification