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. 26, 1983
Filed:
Feb. 13, 1979
Applicant:
Inventor:
Keith C Butler, Newark, DE (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346 / ; 346136 ; 3461 / ; 364520 ;
Abstract
Apparatus for controlling the stepping of a pen and chart of a recorder is described in which the data is buffered so as to free up the processor. The pen steps as fast as it can and no new data points are read until the pen-stepping data is used up. The chart stepping is keyed to the reading of data points so that while the pen is moving to a desired position, the chart stands still.