Resources Contact Us Home
Automatic gain control device

Image Number 4 for United States Patent #6903611.

An automatic gain control device without being influenced by leakage current of a capacitor. The automatic gain control device includes a first control loop, a second control loop, and a multiplexer. The first control loop receives an input voltage and generates a first control voltage. The second control loop receives the first control voltage, digitizes the first control voltage, and outputs a second control voltage by a DAC. The multiplexer chooses the first control voltage or the second control voltage as a gain control voltage according to a hold signal. Because the second control loop digitizes and holds the first control voltage and output the second control voltage from the DAC, the gain control voltage can be held constant for a long time without being influenced by leakage current.

  Recently Added Patents
Three-term predictive adder and/or subtracter
Graphical communication user interface with graphical position user input mechanism for selecting a display image
Compositions of PD-1 antagonists and methods of use
Frame syncrhonization in orthogonal frequency-division multiplexing systems
Integrated bug tracking and testing
Xylitol-based anti-mucosal compositions and related methods and compositions
Motor with power-generation coil module
  Randomly Featured Patents
Adrenergic blocking agents
Electronic apparatus
Apparatus for controlling actuating mechanism of loom dobby
Printing control apparatus, method and printer driver
Apparatus for freezing liquid-carrying pipes
Methods of analyzing polynucleotides employing energy transfer dyes
Resonant tag and deactivator for use in an electronic security system
Method of forming and blank therefor
Imaging device and camera
Labeler apparatus and method of applying self-adhesive labels to compact disks