Method and apparatus for establishing a full-duplex, concurrent, voice/non-voice connection between two sites

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United States of America Patent

PATENT NO 5463616
SERIAL NO

08263266

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Full-duplex, concurrent voice and non-voice communication over the public switched telephone network (PSTN) is maintained by a communication interface apparatus. A voice only connection is established between two sites initially. Concurrent voice/non-voice connection then is established by pressing an engage button on the communication interface apparatus at each site. Voice communication is temporarily lost, while the connection changes from a phone-to-phone voice-only link to an interface-to-interface voice/non-voice data link. The communication interface apparatus includes a digital signal processor for converting and compressing digital voice data into a voice data packet, a modem for maintaining communication over the PSTN and a micro-controller for managing the establishment and maintenance of concurrent voice and non-voice data communication. The micro-controller monitors non-voice data availability to and from a local computer or gaming device, voice data availability to and from the digital signal processor and voice packet and non-voice data packet availability to and from the modem. In one embodiment, non-voice data is transmitted at a higher priority. Voice data is transmitted at a lower priority and buffered such that real-time performance is preserved. A compression algorithm and modem baud rate are used which enable voice data to fit within the available bandwidth left over from the non-voice data communication.

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Patent Owner(s)

Patent OwnerAddress
MULTI-TECH SYSTEMS INC2205 WOODALE DRIVE MOUNDS VIEW MN 55112

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kruse, Robert J Seattle, WA 1 159
Law, Harmon F Tacoma, WA 5 404
Wagner, Steven R Kent, WA 5 182

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