Method and apparatus for processing more than one high speed sig

Details Method and apparatus for processing more than one high speed sig Method and apparatus for processing more than one high speed sig

1989-03-09

1992-01-14

MacDonald, Allen R.

Boots, shoes, and leggings

36442601, G06F 700

Patent

active

050817027

ABSTRACT:
A method and apparatus for processing two high speed signals through a single high speed input terminal of a microprocessor uses a multiplexing circuit connected between the signal conditioners from the wheel speed sensor and the microprocessor. The multiplexing circuit converts the square wave signal as generated by the signal conditioning circuits into a series of interrupts. The multiplexing circuit includes three hardware semaphores or flip-flops which are set by the interrupts generated from wheel speed signals. The semaphores or flip-flops are reset by the microprocessor.

REFERENCES:
patent: 3665405 (1972-05-01), Sanders et al.
patent: 4573120 (1986-02-01), Ichimiya et al.
patent: 4731746 (1988-03-01), Nozeran et al.
patent: 4987535 (1991-01-01), Takayama
"Microcomputer Technology for Truck and Vehicle Applications" L. Smith, Electronic Technologies & Systems for Commercial Behicles of the 80s, Nov. 1981, pp. 1-7.

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