Memory cartridge-connectable electronic device such as electroni

Details Memory cartridge-connectable electronic device such as electroni Memory cartridge-connectable electronic device such as electroni

1988-05-06

1990-03-06

Fleming, Michael R.

Excavating

371 212, 371 401, G06F 1110

Patent

active

049072315

ABSTRACT:
In a combination of an electronic device and a memory cartridge loaded in the device, a direct check is performed to determine if the device and memory cartridge are properly coupled. To this end, the electronic device writes a predetermined code in a predetermined area of a memory within the memory cartridge and subsequently reads the code out of the memory. Whether or not the coupling between the device and cartridge is normal is judged by comparing the written code and the read code. Alternatively the memory cartridge is provided with checking code generating means. A checking code generated by the generating means when the memory cartridge is loaded in the electronic device is checked on the electronic device side to judge whether the coupling is normal. An example of the electronic device is an electronic still video camera in which photography is enabled only when it is judged that the coupling between the camera and the memory cartridge is normal.

REFERENCES:
patent: 4122519 (1978-10-01), Bielawski
patent: 4122520 (1978-10-01), Adamchick
patent: 4400783 (1983-08-01), Locke
patent: 4414665 (1983-11-01), Kimura
patent: 4488300 (1984-12-01), Horey
patent: 4607347 (1986-08-01), Kummer
patent: 4646307 (1987-02-01), Nishimura
patent: 4727544 (1988-02-01), Brunner

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