H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01) F16C 29/04 (2006.01) G10L 9/00 (1995.01) G10L 9/14 (1995.01)
Patent
CA 2163616
An LD-CELP coder 211 codes an input signal supplied through a telephone line based on the low-delay code-excited linear prediction. A speech detector 212 detects voice/no-voice of the input signal. A FAX terminal input detector 213 detects a FAX signal. A multiplexer 214 multiplexes the coded data and the voice/no-voice data through bit steal of one bit per frame from the code. In a CLAD (cell assembling and disassembling) unit 300, a speech data frame is detected, and also the voice/no-voice information that has been multiplexed in the coded data is detected. If the voice/no-voice information indicates voice, the coded data is converted to cell data to be sent out to a transmission line. Concurrently with the operation of the coder, FAX terminal input data is all converted to cell data and sent out to the transmission line independently of the voice/no-voice information.
Corporation Nec
Smart & Biggar
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