Method and system for digitizing handwriting

  • US 5,977,958 A
  • Filed: 06/30/1997
  • Issued: 11/02/1999
  • Est. Priority Date: 06/30/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for tracking a moving object, comprising:

  • (a) a transmitter, integral with the moving object, for transmitting a plurality of radio frequency pulses at a first repetition period;

    (b) a plurality of first receivers, at known mutual relative positions, each of said first receivers for receiving said radio frequency pulses upon receipt of a gating pulse and outputting a digital representation of a received amplitude of said received radio frequency pulses; and

    (c) a mechanism for generating a plurality of gating pulses, each of said gating pulses having a duration, said gating pulses being generated at a second repetition period, longer than said first repetition period, and for supplying each of said gating pulses substantially simultaneously to each of said first receivers, each of said first receivers then receiving said radio frequency pulses for said duration of said supplied gating pulse.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×