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
DRAM refresh method and system
Methods and systems for dynamic spectrum arbitrage
Fuel cell module, manufacturing method thereof and unit containing several of the latter
Method, base station and system for adjusting cell wireless configuration parameter
Data processing circuit with arbitration between a plurality of queues
Administrable compositions
Sealed, waterproof digital electronic camera system and method of fabricating same
  Randomly Featured Patents
Radio communication system
Severity map of change-induced pervasive services outages
Orally administrable solid dosage form
Extendible member
Bulk product dispenser
Method of cladding tubes
Reflective optical scanning system having minimized aberration
Image forming apparatus
Electrical motor activation method having load torque adaptation
Sampling rate conversion using digital differential analyzers