The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1990
Filed:
Jul. 25, 1988
Toshiyuki Takagi, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an interpolator for a line segment parallel with either X axis or Y axis, when a first comparator detects the coincidence of the X coordinate of the starting point with that of the terminating point, a counter is supplied with the Y coordinate of the starting point as an initial value, and counts up until its count value reaches the Y coordinate value of the terminating point. The successive count values from the counter are combined with the X coordinate of the starting point to produce a series of interpolating coordinates. When a second comparator detects the coincidence of the Y coordinate of the starting point with that of the terminating point, a similar counting is performed with respect to the X coordinate, and the count values are combined with the Y coordinate of the starting point. When both of the comparators fail to detect coincidence, a general purpose interpolator is started.