发明名称 |
Method and apparatus for establishing a full-duplex, concurrent, voice/non-voice connection between two sites |
摘要 |
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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申请公布号 |
US5463616(A) |
申请公布日期 |
1995.10.31 |
申请号 |
US19940263266 |
申请日期 |
1994.06.21 |
申请人 |
ADVANCED PROTOCOL SYSTEMS, INC. |
发明人 |
KRUSE, ROBERT J.;LAW, HARMON F.;WAGNER, STEVEN R. |
分类号 |
H04J3/16;H04J3/17;H04L7/04;H04L7/10;H04M11/06;(IPC1-7):H04J3/00;H04L5/14 |
主分类号 |
H04J3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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