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
PMI feedback with codebook interpolation
System, method and apparatus for pausing multi-channel broadcasts
System and method for configuring a direct lift control system of a vehicle
Systems and methods for generating a hybrid text string from two or more text strings generated by multiple automated speech recognition systems
Liquid-level sensor
Article based on a composition containing a crosslinked blend of elastomers
System and method for displaying a constant time selection context menu interface
  Randomly Featured Patents
Lubricant coatings
Apparatus and method for controlling sand moisture
Engine control system and method for hybrid vehicle
Liquid applicator
Method of making niobium and other metal powders
Cooling apparatus using boiling and condensing refrigerant
Toilet tank magazine rack
Method and system for non-destructively testing a metallic workpiece
Activator formulation and composition utilizing same
Lens barrel and imaging apparatus