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Two way communication token interrogation apparatus

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G07F-007/10
출원번호 US-0064877 (1987-06-22)
우선권정보 GB-0032443 (1983-12-06); GB-0025079 (1984-10-04)
발명자 / 주소
  • Eglise David (Windsor GB2) Lewis Adrian (Lymington GB2)
출원인 / 주소
  • Mars Incorporated (McLean VA 02)
인용정보 피인용 횟수 : 113  인용 특허 : 18

초록

A token handling device transmits, using an electromagnetic carrier, data, clock pulses and power to a token. The token transmits data by varying the degree of absorption of the carrier in synchronism with the clock pulses. These data transmissions are detected by a receiver in the token handling de

대표청구항

A token reading device for communicating with a data-storing token, said device comprising: inductive coupling means for inductively coupling said reading device with said token, the inductive coupling means comprising transmitting antenna means for transmitting a signal to a token, said signal dire

이 특허에 인용된 특허 (18)

  1. Rodrian James A. (1123 Lake Shore Rd. Grafton WI 53024), Animal identification and estrus detection system.
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