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:
Apr. 09, 1985
Filed:
Oct. 04, 1982
Bastiaan B Eertink, Grubbenvorst, NL;
Oce-Nederland B.V., Venlo, NL;
Abstract
Pulses from a fixed-frequency pulse generator are counted in a pulse counter to produce a binary number. The binary number is employed to access successive memory addresses which contain data for producing drive pulses for a stepping motor. The memory contents are arranged so that the number of pulses from the pulse generator required to produce a drive pulse decreases during starting and increases during stopping so that smooth acceleration and deceleration of the stepping motor are achieved. In one embodiment, successive locations store '0' or '1' to produce a motor drive signal. In another embodiment, successive locations store numbers which control the length of time until the next drive signal is produced.