Circuit for a cord carrier having a memory and an access control

Details Circuit for a cord carrier having a memory and an access control Circuit for a cord carrier having a memory and an access control

1984-05-14

1987-12-08

Williams, Jr., Archie E.

Boots, shoes, and leggings

235380, 235474, G06F 1134

Patent

active

047121777

ABSTRACT:
A monolithically integrable circuit includes a memory having electrically writable and erasable non-volatile storage cells and a memory region having an addressing space subdivided into a plurality of partial quantities of respective addresses receiving reference data, an addressing circuit connected to the memory for reading out, writing and erasing partial regions of the memory, a control unit connected to the memory and to the addressing circuit causing access to part of the memory addresses to be dependent on an input operation through the addressing circuit, the control unit including a data comparison unit carrying out comparison operations between a plurality of stored reference data and externally entered code data, address lines connected to the memory, a selection logic connected to the address lines for determining the partial quantities together with the address lines, and an address control unit connected to the address lines through the selection logic for delivering a release signal if at least one address was selected from each partial quantity during the comparison operations.

REFERENCES:
patent: 4087856 (1978-05-01), Attanasio
patent: 4092524 (1978-05-01), Moreno
patent: 4211919 (1980-07-01), Ugon
patent: 4271482 (1981-06-01), Giraud
patent: 4295041 (1981-10-01), Ugon
patent: 4408203 (1983-10-01), Campbell
patent: 4435752 (1984-05-01), Winkelman
patent: 4442345 (1984-04-01), Mollier
patent: 4498075 (1985-02-01), Gaudio
patent: 4499556 (1985-02-01), Halpern
patent: 4534018 (1985-08-01), Eckert
patent: 4628195 (1986-12-01), Baus

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