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
Portion of a display panel with an ambiguous facial expression icon
Integrated circuit packaging system with an encapsulation and method of manufacture thereof
Systems and methods for minimization or elimination of diffusion effects in a microfluidic system
Idle stop and go system and method for controlling thereof
Methods of making a diagnostic device by interweaving hydrophobic and hydrophilic fibers, and diagnostic device therefrom
Block polymers and their process of preparation
Blow moulding machine with compressed air recycling
  Randomly Featured Patents
LED lamp for light source and method
Method of manufacturing circuit with buried strap including a liner
Hot box design with a multi-stream heat exchanger and single air control
Recording medium loading device having rotation cam which drives door opening/closing device
Method for organizing and presenting visual information on a computer screen
Braking system for watercraft
Expansible table
Method for monitoring telephone status changes
Arrangement for the entrainment of particulate materials
Remote reconfiguration of a secure network interface