Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
On-chip R-C time constant calibration










Image Number 2 for United States Patent #7548129.

An integrated tuner includes circuitry to receive a television signal, a quadrature mixer coupled to the output of the circuitry, a polyphase filter coupled to the output of the quadrature mixer, a relaxation oscillator, and a digital calibration module. The relaxation oscillator generates a clock having a period that is directly proportional to the on-chip RC time constant. The clock is fed into a counter of the digital calibration module. The counter is started and stopped at predefined time intervals by a finite state machine. The finite state machine updates the calibration code based on a successive approximation algorithm according to the end count results received from the counter. The digital calibration module outputs the updated calibration code to the polyphase filter and to the relaxation oscillator.








 
 
  Recently Added Patents
Safety device and method for electric heating appliances
Non-serialized electronic product registration system and method of operating same
Probiotic enriched and low organic acid food products
RFID reader revocation checking using low power attached displays
Methods and systems for automated segmentation of dense cell populations
Power consumption management in a MIMO transceiver and method for use therewith
Electric power supply system and electric power supply system for motor vehicle
  Randomly Featured Patents
Transmission system and recording system having a simplified symbol detector
Dual-pixel full color CMOS imager
Access method of actuator and control apparatus therefor
Pesticidal agents
Gun scope
Tool having interchangeable indicia marking electrodes for use in electrical discharge machining
Motor vehicle
Pattern for a tire sidewall and buttress
Portion of a cleaning implement
Chime generating circuit