Circuit for detecting an end point of an arc

Details Circuit for detecting an end point of an arc Circuit for detecting an end point of an arc

1988-02-16

1993-08-10

Lee, Thomas C.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

395140, 340747, G06F 1562

Patent

active

052356787

ABSTRACT:
A circuit for detecting an end point of an arc in XY coordinate system comprises a first register storing an X coordinate value of a given end point, a second register storing an Y coordinate value Yse of the same given end point, a third register storing a Y coordinate value Y of a coordinate point of a calculated arc pattern, a fourth register storing a Y coordinate Y of the same coordinate point of the same calculated arc pattern. A first comparator is coupled to the first register and the third register to generate a first coincidence signal when a content of the first register is coincident with a content of the third register and when a tangential angle of the calculated coordinate point is within a first angular extent. A second comparator is coupled to the second register and the fourth register to generate a second coincidence signal when a content of the second register is coincident with a content of the fourth register and when the tangential angle of the calculated coordinate point is within a second angular extent.

REFERENCES:
patent: 4149164 (1979-04-01), Reins et al.
patent: 4149165 (1979-04-01), Herman et al.
patent: 4648049 (1987-03-01), Dines et al.
patent: 4674059 (1987-06-01), Schrieber
patent: 4692887 (1987-09-01), Hashidate

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