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. 10, 1987
Filed:
Dec. 16, 1985
Applicant:
Inventors:
Richard L Garwin, Scarsdale, NY (US);
James L Levine, Yorktown Heights, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
178 18 ; 356375 ; 2504911 ;
Abstract
Correlation of light beam movement with electrical timing in a light beam interrupt data input interface device is provided by determining the magnitude of an angular difference between the electrical system and a line through the scanning axis for use as a correction factor. The correlation principle involves a combination of measurement with respect to the electrical system and the application of geometric principles to provide a correction factor.