Resources Contact Us Home
Automatic gain controlled amplifier apparatus

Image Number 5 for United States Patent #4016557.

In an analog data acquisition system, used for digital treatment, analog signals of different levels received from remote locations are amplified with a selected gain before being converted by a common A/D converter. A discretely variable gain amplifier is used in which a series of programmed predetermined ranges are sequentially tested against the capability of the A/D converter in relation to the particular input analog signal. The first acceptable gain is selected and a code can be used to identify the selected gain for digital treatment of the derived corresponding digital signal.

  Recently Added Patents
Bulk vending apparatus, system and method
Targeting agents for enhancing radiation therapy
Antisense modulation of C-reactive protein expression
Display for displaying three-dimensional images and method for displaying three-dimensional images
Systems and methods for archiving and retrieving navigation points in a voice command platform
Process for the preparation of protected L-alanine derivatives
Methods and systems for distributing broadcast messages on various networks
  Randomly Featured Patents
Motion picture receiving device, motion picture transmitting device, motion picture decoding method, and motion picture encoding method
Input circuit and semiconductor integrated circuit
Apparatus and method for measuring an induced perturbation to determine a physical condition of the human arterial system
Quick-setting cement containing clinker based on calcium fluoro-aluminate mixed with lime
Alkaline sulfite pulping process with sodium aluminate and anthraquinone
Harness for motorcycle loading apparatus
Detachable conveyor bucket
Fault tolerant apparatus for detecting the passage of a moving body
Contact-lens construction
Titanium oxide and alumina alkali metal compositions