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COORDINATE STORE DIGITAL SCAN CONVERTER

  • US 3,838,420 A
  • Filed: 08/29/1972
  • Issued: 09/24/1974
  • Est. Priority Date: 08/29/1972
  • Status: Expired due to Term
First Claim
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1. In a radar system wherein it is desired to employ a scan converter for the purpose of improving the display of the targets detected by said radar system, and wherein said radar system provides digital data indicative of the coordinates of each target hit, the improvement in said scan converter comprising:

  • cyclic memory means for storing the digital data coordinates for a plurality of target hits received from said radar system, said cyclic memory means including age code memory means for storing a code for each target hit digital data entered in said memory indicative that it is newly entered, and means for decrementing said age code for each target hit digital data each time it is cycled through said memory, means for comparing the coordinates of each new target hit digital data with the target hit digital data in said memory to determine if correlation exists and to provide a correlation signal indicative thereof, meaNs responsive to said correlation signal to prevent the storage of said new target hit digital coordinates in said memory, and means responsive to the absence of a correlation signal for storing said new target hit digital coordinates in said memory.

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