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
Inter vehicle communication system
Locking flange
Microcapsules, their use and processes for their manufacture
Herbal composition for the treatment of wound healing, a regenerative medicine
Modified continuous phase modulation communications system and related methods
Community profiling for social media
High density vertical structure nitride flash memory
  Randomly Featured Patents
Microwaveable heat retentive receptacle
Method of fabricating a semiconductor IC DRAM device enjoying enhanced focus margin
Thin prestressed concrete panel and apparatus for making the same
Method and apparatus for low intermodulation distortion amplification in selected bands
Avoiding deadlocks in a multiprocessor system
Data decoding method and circuit and information recording and reproducing apparatus using the same
Pulse-width modulator for controlling a semiconductor circuit breaker
Feeding device for sheet processing machines
Anti-shock traverse structure
Semiconductor memory with redundant column circuitry