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. 22, 2005
Filed:
Oct. 28, 2002
Toru Wake, Kasugai, JP;
Daisuke Hayakawa, Kasugai, JP;
Toru Wake, Kasugai, JP;
Daisuke Hayakawa, Kasugai, JP;
Sunx Limited, Aichi, JP;
Abstract
Detection of interfering light is performed based on an interfering light detection timing signal Si set immediately before a blockage detection timing signal Sr. If interfering light is detected consecutively with respect to the same optical axis according to interfering light detection timing, the length of blank period tb is reduced to shift the positions of pulses of the blockage detection timing signal, thereby avoiding overlap between these pulses and pulses of interfering light on the time axis. In this manner, mutual interference between multiple-axis photoelectric sensors can be prevented without providing sync line wiring between the photoelectric sensors.