Appeal No. 2002-1743
Application No. 09/047,866
receive and transmit signal paths, facilitating voice-switched hands-free radio operation.
Representative independent claim 1 is reproduced as follows:
1. A transcoder-codec circuit arrangement that supports voice-switched
hands-free radio operation, comprising:
a first register arranged to store a value indicative of a peak signal
in a receive signal path;
a first attenuator coupled to the receive signal path;
a second register arranged to store a value indicative of a peak
signal in a transmit signal path;
a second attenuator coupled to the transmit signal path;
a digital signal processor coupled to the first and second registers
and configured and arranged to update the value in the first register with a
present peak receive signal level if the value in the first register is less
than the present peak receive signal level, and arranged to update the
value in the second register to a present peak transmit signal level if the
value in the second register is less than the present peak transmit signal
level; and
a microcontroller coupled to the first and second registers and to
the first and second attenuators and configured to read values from the
first and second register and adjust the first and second attenuators in
response to the values.
The examiner relies on the following references:
Cleary, Jr. et al. (Cleary) 4,686,390 Aug. 11, 1987
Reesor WO 93/06679 Apr. 01, 1993
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