Information processing device and accessory control device

Details Information processing device and accessory control device Information processing device and accessory control device

1992-07-07

1996-04-02

Ruggiero, Joseph

Boots, shoes, and leggings

395110, 395115, G06F 1900

Patent

active

055046690

ABSTRACT:
A system has an electronic device, such as a printer, and an accessory control device, such as a cartridge, that couples physically and electrically to the electronic device. The electronic device includes a microprocessor, memory, a connector adapted to couple with the accessory device, a data output means, and a data output notification means. The accessory device includes a microprocessor, memory, an interrupt request receiving means, a notification cancellation means and a data fetch means.
The present invention transfers data efficiently between an electronic device and an accessory control device in cases in which information processing is performed by installing the accessory control device in the electronic device.
In operation, an electronic control device of printer that is transferring data, reflects the data to be transferred in the lower 8 bits of the address signal line (CAB) and outputs it. Data corresponding to the address specified by this address is read from a ROM and held in latches. Holding of the data is announced by interrupt request signal AMDINTO or the signal EWRDY. When the microprocessor of the cartridge, receives this notification and reads the data held in the latches the transfer of data from the electronic device is complete.

REFERENCES:
patent: 4441164 (1984-04-01), Pavan et al.
patent: 4953103 (1990-08-01), Suzuki
patent: 5038025 (1991-08-01), Kodera
patent: 5075874 (1991-12-01), Steeves et al.
patent: 5137379 (1992-08-01), Ukai et al
patent: 5142614 (1992-08-01), Schneider et al.
patent: 5195176 (1993-03-01), Lung
patent: 5208732 (1993-05-01), Baudoin et al.

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