Memory device for a page printer

Details Memory device for a page printer Memory device for a page printer

1989-10-17

1992-09-08

Evans, Arthur G.

395110, 395117, G06K 1500

Patent

active

051465450

ABSTRACT:
A memory device for a page printer utilizing a one port random access memory in connection with a central processing unit to process print data is provided. A first memory circuit is provided to receive head address data from the CPU. A second memory circuit receives tail address data from the CPU. The first memory circuit and second circuit store these input values. A first comparator compares the head address data stored in the first memory circuit with address data produced by the CPU, while a second comparator compares the tail address data stored in the second memory circuit with address data produced by the CPU. The memory is divided into a first region defined by the head address and the tail address and an other region. A memory control circuit receives the outputs from the second comparator and the first comparator and accesses one of the first region or the other region in response to the outputs of the comparators.

REFERENCES:
patent: 4825386 (1989-04-01), Bogacki

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