Resources Contact Us Home
Gain control method and apparatus

Image Number 4 for United States Patent #8098742.

An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.

  Recently Added Patents
High dynamic range pixel structure
Scoring users of network based users
Front cover of an electronic device
Probiotic enriched and low organic acid food products
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
Systems and methods for synchronizing and controlling multiple image sensors
In-store marketing sign
  Randomly Featured Patents
Facsimile apparatus
Semiconductor device and method for fabricating the same
Manual override and locking mechanism and actuator including same
Drive system for a railway hopper car discharge gate
Directional microphone
Methods and apparatus to secure a window
Method and apparatus for low quantity detection of bioparticles in small sample volumes
Method and apparatus for phase and/or copy window control use with a domain expansion recording medium and record carrier
Heterogeneous, composite, carbonaceous catalyst system and methods that use catalytically active gold
Cooling device for integrated circuit element