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. 25, 1986
Filed:
Mar. 11, 1981
Steve Dorr, Windham, NH (US);
Centronics Data Computer Corp., Hudson, NH (US);
Abstract
The slaved ramp voltage generator disclosed herein facilitates the writing of characters by a servo controlled stylus carried on a moving carriage. The carriage is driven at a selectable speed and the drive system generates pulse signals at a rate which is proportional to carriage speed. A digital counter is advanced by these pulse signals and the digital value held by the counter is converted to an analog voltage which varies in proportion to displacement of the carriage. This carriage displacement voltage is summed with a vector-defining position voltage to obtain a control voltage which drives the stylus servo mechanism to effect writing with respect to a moving frame of reference.