Resources Contact Us Home
Method and apparatus for dynamic automatic gain control when pilot signal is lost

Image Number 4 for United States Patent #5742202.

The automatic gain control circuit of the present invention improves upon conventional techniques using a pilot carrier for control by monitoring for the presence of the pilot carrier. If the pilot carrier level is at an undetectable level, it will switch control of the level control section of the automatic gain control circuit to the equivalent thermal setting by means of a switch. The switch connects the output of a temperature-sensing network to a Bode driving circuit that approximates attenuation of a given transmission medium over temperature. The gain setting will therefore be based on an approximation of what the cable losses should be at the detected temperature of the amplifier housing. The present invention provides dynamic gain adjustment, even in the event of pilot carrier signal loss.

  Recently Added Patents
Systems and methods of using dynamic data for wear leveling in solid-state devices
Picture information coding device and coding method
Carrier sense multiple access (CSMA) protocols for power line communications (PLC)
System for controlled release of an active principle and method for preparation
Providing multiple decode options for a system-on-chip (SoC) fabric
Creation and use of test cases for automated testing of media-based applications
Surface-emitting laser light source using two-dimensional photonic crystal
  Randomly Featured Patents
System and method for energy efficient data prefetching
Perimetrically loading collet
Rail vehicle bogie, a method of machining the bogie, and a tool for implementing the method
Substituted quinolin-2-one derivatives useful as antiproliferative agents
Method of identification of differentially expressed MRNA
Local area network interface and interfacing method for network element
Shared stream memory on multiple processors
Detection of a gaseous substance emanating from a layer of polymeric composition
Multi-purpose water pressure plunger
Portable terminal with dual axis hinge device