Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1997-03-27
2000-09-19
De Cady, Albert
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714819, H04L 2506
Patent
active
06122765&
ABSTRACT:
Multiplex transmission apparatus 10 on the transmitting side multiplexes received signals from non-voice signal input output apparatus 14 and voice signal input output apparatus 16, and also transmits the multiplexed signal from communications network 30 by digital portable telephone 12 on the transmitting side. The digital portable telephone transmits a signal per 20 msec, so that multiplex transmission apparatus 10 alternately transmits the voice signal and the non-voice signal at an interval of 20 msec, for example. Multiplex transmission apparatus 20 sorts out the voice signal and the non-voice signal from the supplied signal by checking the error detecting code of the supplied signal. Multiplex transmission apparatus 20 can judge the type of the signal according to the type of the error detecting code, because a different error detecting code is added to each signal.
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Kermant P et al., "Error Correction Schemes in a Mixed Voice/Data Environment" New Communication Services: A Challenge to Computer Technology. Proceedings of the International Conference on Computer Communication, Sep. 15, 1986, pp. 555-560, XP002057601.
Nakayama Hirohumi
Sawai Koichi
Abraham Esaw
Cady Albert De
NTT Mobile Communications Network Inc.
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