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:
Jan. 29, 1985
Filed:
Jun. 04, 1982
Applicant:
Inventor:
Dan H Kramer, Sunnyvale, CA (US);
Assignee:
Atari, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3403 / ; 2502 / ; 324 / ; 324 / ;
Abstract
Apparatus for producing an analog signal--having a relative amplitude that is indicative of the direction and rate of rotation of a shaft--from a pair of pulse streams provided by a shaft encoder coupled to the shaft. The invention includes circuitry for comparing the phase relationship between the signals to determine direction, for generating a digital pulse of a fixed pulse-width for each pulse contained in one of the pulse streams, and integrating the time or inverted form of the digital pulse, depending upon the determined direction, to produce the analog signal.