Function selector with external hard wired button array on compu

Details Function selector with external hard wired button array on compu Function selector with external hard wired button array on compu

1997-04-30

1999-11-16

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

710 6, 710260, 710261, 710267, 379 9001, 341 22, G06F 1314

Patent

active

059875372

ABSTRACT:
The invention is a computer system with a button array on the computer chassis for simulating the operation of common consumer electronic devices. Each button of the array of buttons is hardwired to the system processor. Upon activation of one of these buttons, an interrupt signal is sent to the system processor. The system processor halts whatever it is doing, and subsequently identifies the activated button. A signal generator attached to the buttons then sends the system processor a second interrupt signal, such that upon exiting the handling of the first interrupt, the system processor is presented with a second interrupt. The system processor then handles the second interrupt. While handling this second interrupt, the system processor executes whatever function corresponds to the activated button. The system processor then exits the handling of the second interrupt and resumes whatever activity it was engaged in before the activation of the button.

REFERENCES:
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patent: 5555413 (1996-09-01), Lohman et al.
patent: 5713041 (1998-01-01), Chen et al.
patent: 5758170 (1998-05-01), Woodward et al.

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