×

Modulation method for data transmission from a transponder to a read-write device

  • US 6,480,099 B1
  • Filed: 10/14/1998
  • Issued: 11/12/2002
  • Est. Priority Date: 10/14/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. Modulation method for data transmission from a transponder to a read-write device, including creating an amplitude of modulation voltage with a modulator contained in the transponder, causing the amplitude of modulation voltage by a reduction of the supply current flowing in the transponder, and wherein an additional capacitor stores surplus energy during data transmission from the transponder to the read-write device, which energy can then be supplied to the transponder circuits as required.

View all claims
  • 10 Assignments
Timeline View
Assignment View
    ×
    ×