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
Soybean EF1A promoter and its use in constitutive expression of transgenic genes in plants
Data unit receiver and sender control method
Architectural panel with natural fossil spade leaf embossed surface
Micromachined devices and fabricating the same
RF amplifier with digital filter for polar transmitter
Vapor phase decarbonylation process
  Randomly Featured Patents
Computer housing
Record organizer
Sensing retraction of perforated paper towels within housing after dispensing
Electrospray ion source with reduced neutral noise and method
Gliding-reclining layflat seating unit with power actuator and manual and automatic locking linkages
Peltier module
Stack making machine
Shotgun shell holder
Projection television apparatus for reducing red-emphasized peripheral screen portions