Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Automatic gain control using root-mean-square circuitry in a digital domain conference bridge for a telephone network










Image Number 6 for United States Patent #5029162.

An automatic gain control for an inputted multiplex PCM data stream in a conferencing bridge in a telephone system. The inputted multiplexed data stream has a predetermined number of time slots wherein each time slot carries PCM speech data corresponding to an individual party in the conference call. The control of the present invention is capable of operating in .mu.-Law or A-Law companded format at a frequency of 192-256 kilobytes per second. The automatic gain control incorporates a digital root-mean-square meter, a COUNT sequence to change GAIN at predetermined intervals, and a set of GAIN rules to selectively increase or decrease GAIN based upon the output of the digital root-mean-square meter.








 
 
  Recently Added Patents
Method and system for security authentication of radio frequency identification
System and method for providing location and access network information support in a network environment
Plasmon generator includes three metal layers for thermally-assisted magnetic recording
Navigating applications using side-mounted touchpad
Memory device program window adjustment
Pharmaceutical dosage form
Charged particle source with multiple selectable particle emitters
  Randomly Featured Patents
Linguistic analysis
Replacement valve and anchor
Physical exerciser
Magnetorheological-fluid hydraulic mount
Device for metering weft yarn
Reliably transferring queued application messages
Normally-off field-effect semiconductor device
Dynamic ray population control
Catheter guidance through a calcified aortic valve
Auto attachment coupler with abductor valve