Resources Contact Us Home
Photodiode digitizer with fast gain switching

Image Number 4 for United States Patent #7365665.

An optical receiver and method of operating therfor. A photodiode converts a received optical signal to an electrical signal, which is provided to both high gain and low gain signal paths. First analog-to-digital converter ADC) circuitry is coupled to convert a high gain output signal into a first plurality of digital signals, while second ADC circuitry converts a low gain output signal into a second plurality of digital signals. A control unit is configured to monitor the amplitude of at least one of the low gain and high gain output signals. If the amplitude of the monitored signal falls below a predetermined threshold, the control unit is configured to select data provided by the first ADC circuitry. Otherwise, data provided by the second ADC circuitry is selected.

  Recently Added Patents
Sending targeted product offerings based on personal information
Circuit device for preventing radiation emission in portable terminal with two cameras
Shape based similarity of continuous wave doppler images
Semiconductor device
Dye-sensitized solar cell, dye-sensitized solar cell module, and coating liquid for forming electrolyte layer
System and method for optimizing utilization of inventory space for dispensable articles
Solid-state imaging device
  Randomly Featured Patents
Method and related processing circuits for reducing memory accessing while performing de/compressing of multimedia files
Modular and reconfigurable multi-stage high temperature microreactor cartridge apparatus and system for using same
Three-dimensional non-woven media
Modulation in an optical network
Countergravity casting apparatus
Honeycomb structure
Quartz wafer processing chamber
Microwave sterilization device
Bar code scanner
Ceiling fan housing