Monitor channel system in use with a recording apparatus

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Details

364264, 3649341, G06F 304, G06F 906, G06F 300, G03G 1500

Patent

active

051426757

ABSTRACT:
A monitor control system comprises an interrupt processor for executing regular monitor processing by a periodic interrupt occurring at a predetermined time interval, and a background processor for executing background processing, wherein when interruption occurs, execution of the background processing by the background processor is interrupted while regular monitor processing is executed during a period in which background processing is interrupted. The time-consuming background processing is treated as a low-level processing task, and the regular monitor processing, as a high-level processing task. The low-level processing task is executed as a background processing during CPU idle time. Interruption of the background processing occurs ever 10-msec, during which the high-level processing task is executed. Accordingly, background processing and regular monitor processing are smoothly executed, and the CPU is thereby efficiently used.

REFERENCES:
patent: 4196476 (1980-04-01), Steiner
patent: 4198680 (1980-04-01), Gaxx, Jr.
patent: 4283773 (1981-08-01), Daughton et al.
patent: 4325119 (1982-04-01), Grandmaison et al.
patent: 4638452 (1987-01-01), Schultz et al.

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