Identifier token with electronic circuitry and conductor means i

Details Identifier token with electronic circuitry and conductor means i Identifier token with electronic circuitry and conductor means i

1996-10-18

1999-06-29

Hajec, Donald

Registers

Records

Conductive

235380, G06K 1900

Patent

active

059171782

ABSTRACT:
An identifier token has an electronic circuit with a bidirectional electronic interface for accessing the circuit. The circuit comprises an identifier code. The code is realized by bonding the circuit to a conductor external to the circuit as part of a non-volatile coding mechanism. The code may be stored in an on-board EEPROM that is fixated by bonding its write enable pin to an appropriate voltage. A second realization is by means of selective coding interconnections between a series of bond pads and a conductor for forming a string of code elements.

REFERENCES:
patent: 4074189 (1978-02-01), Harms et al.
patent: 4256955 (1981-03-01), Giraud et al.
patent: 5557096 (1996-09-01), Watanabe et al.
patent: 5603108 (1997-02-01), Thoone
patent: 5703795 (1997-12-01), Mankovitz
Single-Chip 8-Bit Microcontrollers, Chapter 3, The MAB 8051C51 Microcontroller Family, pp. 65-109, Philips Export BV, Eindhoven, NL.

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