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
Semiconductor process
System and method of detecting and locating intermittent and other faults
Discovery, analysis, and visualization of dependencies
Method and apparatus for visual neural stimulation
Platform for generating electricity from flowing fluid using generally prolate turbine
Cationic polymers for antimicrobial applications and delivery of bioactive materials
Method and apparatus for charging a power pack of a portable electronic device
  Randomly Featured Patents
Flip chip interconnection having narrow interconnection sites on the substrate
Method of and apparatus for cutting a carpet
Combined piston rod alignment and sealing assembly for fluid actuator cylinders
Bidirectional router and a method of bidirectional amplification
Barbecue grill
Display device and decal for forming a display panel terminal
Group II-VI compound semiconductor light emitting devices and an ohmic contact therefor
Heart valve prosthesis and process for its production
Polysaccharide aldehydes and acetals as permanent press agents for textiles