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
Acoustic echo cancellation
Orbing and lighting systems
Stacked structure and stacked method for three-dimensional chip
Bid optimization in search engine marketing
Food safety printer
Real ear measurement system using thin tube
  Randomly Featured Patents
Tool for rock breaking and log splitting
Plug-in connector for an electrical device
Superconducting rotating electrical machine
System for monitoring wind power plants
Ignition coil device for internal combustion engine
Granular bed filter
Stencil to pad method for applying a coating to a part
Rail road car truck and fittings therefor
Cyclic imide thione activated polyalkylene oxides
Cladding-pumped fiber with helical rare-earth-doped core for fiber lasers and amplifiers