Signal processing device and signal processing method

Details Signal processing device and signal processing method Signal processing device and signal processing method

2001-09-13

2008-05-27

Payne, David C. (Department: 2611)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C370S468000, C375S219000, C375S220000

Reexamination Certificate

active

07379877

ABSTRACT:
Signal processing device and method include at least two codec units configured to operate in a plurality of modes of a coding/decoding/tandem free operation for data transmitted on a respective allocated channel. A control unit is configured to control the at least two codec units. The control unit includes a detection unit, a judging unit, and a commanding unit. The detection unit is configured to detect a request for activating a codec unit. The judging unit is configured to judge whether a resulting required signal processing power for all activated codec units exceeds a predetermined threshold level of an overall signal processing power. The commanding unit is configured to command, if the judging unit takes a positive judgment, at least one of the activated codec units to operate in such a mode that the resulting signal processing power for all activated codec units does not exceed the predetermined threshold level.

REFERENCES:
patent: 5949484 (1999-09-01), Nakaya et al.
patent: 6577875 (2003-06-01), Brouwer
patent: 7002992 (2006-02-01), Shaffer et al.
patent: 0 658 841 (1995-06-01), None
patent: 1 014 738 (2000-06-01), None
patent: 1 124 386 (2001-08-01), None

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