Patent · US Expired

Method for operating optical sensors

US7028903B2 · kind B2 · utility

1Cited by

7References

15Claims

0Family size

Assignee

SICK AG · DE

Inventors

Juergen Reichenbach · Emmendingen, DE
Carl Hafner · Emmendingen, DE
Peter Hauser · Kirkland, US
Christiane Fillhardt · Schutterwald, DE

Key dates

Filing date	Apr 23, 2003
Grant date	Apr 18, 2006
Priority date	—
Expiry date	May 27, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG06K7/10722
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method for operating optical sensors, particularly code readers, which have a light receptor that receives light reflected and/or returned from an object. A picture is generated from the received light and the content of the picture, such as a code, is read. At least some pictures are compressed with a picture compression algorithm of the sensor. To improve the operation of such optical sensors, especially code readers, and to improve the analysis of error detection from knowing the causes for errors, only pictures which have error information are compressed and stored. The code reader is constructed to perform these functions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.