Resources Contact Us Home
Radar decoder

Image Number 6 for United States Patent #5543800.

A radar decoder circuit for converting NRZL Data to radar video data which s supplied to a radar video display screen. The radar video circuit includes an Erasable Programmable Logic Device which decodes incoming NRZL data to identify a frame sync having twenty four data bits. When the frame sync is identified the location of sixteen bits of synchro data is also determined. The synchro data is then latched into a latch within the Erasable Programmable Logic Device for processing by a Digital-to-Synchro Converter. Control signals for effecting a transfer of the synchro data to the Digital-to-Synchro Converter are provided by enable and latch signal generating circuit within the Erasable Programmable Logic Device. The Digital-to-Synchro Converter converts the digital synchro data to analog synchro signals which are supplied to the radar video display allowing the display to indicate the direction the radar from which the NRZL data is received is pointing. The Erasable Programmable Logic Device also includes a marker generating circuit which generates a ten kilometer marker pulse signal and a fifty kilometer marker pulse signal for use by the radar video display as well as trigger pulse signal which is used as timing reference indicator by the radar video display.

  Recently Added Patents
Post-processing device and image forming system
Method and apparatus of motion vector prediction with extended motion vector predictor
Use of beta-adrenoceptor antagonists for the manufacture of a medicament of the treatment of disorders of the outer retina
Display systems with touch screens
Schottky diode and method of manufacture
Mobile terminal and method for displaying information
Virtual multi-cluster clouds
  Randomly Featured Patents
Perfluoropolyether oligomers and polymers
Process for converting synthesis gas in the presence of a catalyst based on cobalt and titanium
Cytosolic forms of beta-lactamase and uses thereof
Circuit with flexible portion
Persistent/impervious event forwarding discriminator
Sun visor with illuminated mirror
All voice transaction data capture--dictation system
Filter having pinched ends for improved sealing effect
Intravascular folded tubular endoprosthesis
LED with an optical system to increase luminance by recycling emitted light