Patent · US Expired

Identification system

US4475481A · kind A · utility

67Cited by
8References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateOct 29, 1982
Grant dateOct 9, 1984
Priority date
Expiry dateOct 29, 2002

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61B2562/08
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

An identification system comprising an intermittent electromagnetic generator at one frequency and a remote receiver for receiving the electromagnetic energy and using it to power an encoder of digital information and a transmitter at a different frequency for transmitting the encoder digital information and a receiver remote from said transmitter for decoding and comparing the decoded digital data with stored data to initiate commands for functions such as feeding, ration dispensing, and the like in response to the predetermined comparison criteria of decoded data and such stored data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.