Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Representing polarized light in computer models
Limit switch
Projection-type video-image display apparatus
Dehydratable hygiene articles
Collating device, collating method, and program
Image processing system, image processing apparatus, control method for image processing apparatus, and storage medium
Solid-state image capture device and image capture apparatus
  Randomly Featured Patents
Method of and apparatus for rendering an image simulating fluid motion, with recording medium and program therefor
Current-type GTO inverter with surge energy restoration
Partial FFT processing and demodulation for a system with multiple subcarriers
Multi-service network switch with multiple virtual routers
Heat pump
Ultra wide band pulse train generator
Threaded insert for tapered seat spark plug bores, installation tools, and method of installation
Flexible, rollable photovoltaic cell module
Fluidized-bed drying and classifying apparatus
System for viewing objects at a fire scene and method of use