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
Automatic detection of image degradation in enhanced vision systems
Image descriptor quantization
Methods and systems for temporarily sharing position data between mobile-device users
Case for electronic device
Markers of acute myeloid leukemia stem cells
Compositions and processes for forming photovoltaic devices
System for and method of providing single sign-on (SSO) capability in an application publishing environment
  Randomly Featured Patents
Cosmetic compositions having enhanced wear properties
Reverse vending machine
Control surface failure detection for fly-by-wire aircraft
Total disc replacement device
Electrostatic copying machine
On-line organization of data sets
Waist mounted pouch
Solar energy storage cell
Method of alignment for CCD and the apparatus of the same
Machine tool