Output controller for initiating delayed or conditional commands

Details Output controller for initiating delayed or conditional commands Output controller for initiating delayed or conditional commands

1975-01-06

1976-01-20

Dildine, Jr., R. Stephen

Registers

Transfer mechanism

Traveling pawl

235153AC, 235153AH, 3401461BA, 3401461D, 3401725, G06F 1100

Patent

active

039341313

ABSTRACT:
The proposed command controller responds to the true or desired command d pattern and its complement which are outputted from the computer interlaced in time and checks these true-complement patterns to determine if a command format error exists. Moreover, the command pattern is checked for timing errors by comparing it against preselected minimum and maximum delay intervals corresponding to the permissible minimum and maximum time intervals for a command signal output. If the command format or its timing is incorrect, an error flag is fed back to the computer to initiate an interrupt and/or to trigger a back-up mode. The invention facilitates the use of high speed general purpose computer machines as real time, hands off, control devices for certain applications such as onboard a spacecraft or within medical electronics systems, for example.

REFERENCES:
patent: 3199077 (1965-08-01), Prather
patent: 3838261 (1974-09-01), Rice et al.

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