Resources Contact Us Home
Device for generating a frequency modulated signal

Image Number 4 for United States Patent #4590445.

A device for generating a frequency-modulated signal according to a predetermined modulation law includes a digital generator that, from a clock signal, generates an output signal s(t) and a error signal (S.sub.e). The signal s(t) is a signal in which the duration of each alternance is an integer multiple of the clock period. The error signal (S.sub.e) represents the modulation errors of the output signal s(t) with respect to the theoretical output signal (S.sub.t) modulated according to the predetermined law. An error correction device receives the output signal s(t) and is controlled by the error signal (S.sub.e) and corrects the modulation errors and provides a corrected output signal.

  Recently Added Patents
Aqueous composition with agents to inhibit water evaporation
Liquid crystal shutter glasses
Method of purifying crude acetone stream
Automatic logical position adjustment of multiple screens
Sweetener compositions having enhanced sweetness and improved temporal and/or flavor profiles
Method and system for dynamic digital rights bundling
Method of and apparatus for recording motion picture, which generate encoded data with higher compression efficiency using a motion vector similarity
  Randomly Featured Patents
Diffusion weighted magnetic resonance imaging
Shoe upper
Bone fixation assembly
Method for forming self-synthesizing conductive or conjugated polymer film and application
Stepper motor control circuit
Elevator clips for portable computer
Camber-monitoring tensiometer
Fishing lure retriever
Electrophoretic display panel
Monitoring an environment using a RFID assembly