Silence based attenuation for enhanced idle-channel FM or other receiver co-existence with a coexisting radio and circuits, processes, and systems

Patent metadata

Field	Value
Publication number	US-9130683-B2
Application number	US-201113171589-A
Country	US
Kind code	B2
Filing date	Jun 29, 2011
Priority date	Mar 7, 2011
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

An electronic circuit ( 100 ) for use in a wireless receiver ( 1720 ). The circuit ( 100 ) includes an audio demodulator ( 15 ), an audio envelope portion ( 35 ) operable to deliver an audio envelope signal, a high pass filter ( 38 ) coupled between the audio demodulator ( 15 ) and the audio envelope portion ( 35 ), a volume control ( 25 ) fed by the audio demodulator ( 15 ) and operable to provide a controllable audio signal output, and a controller ( 45 ) responsive to the audio envelope portion ( 35 ) to provide an attenuation control to the volume control ( 25 ). Other circuits, receivers, processes of operation, processes of manufacture, and processes of testing are disclosed.

First claim

What is claimed is:

1. An electronic circuit for use in a wireless receiver, the circuit comprising:
an audio demodulator;
an audio envelope portion operable to deliver an audio envelope signal;
a high pass filter coupled between said audio demodulator and said audio envelope portion;
a volume control fed by said audio demodulator and operable to provide a controllable audio signal output; and
a controller responsive to said audio envelope portion to provide an attenuation…

Assignees

• Murali Sriram
• Ganesan Aravind
• Texas Instruments Inc

Inventors

• Murali Sriram
• Ganesan Aravind

Classifications

• Y10T29/49117

  Cross-Sectional Technologies · mapped topic

• H04B1/10

  Electricity · mapped topic

• H04H40/45 Primary

  Electricity · mapped topic