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, 2008
Filed:
Mar. 18, 2005
Chaochi Huang, Taipei, TW;
Chih-yung Cheng, Taipei, TW;
Kung-ho Su, Sijhih, TW;
Ching-horng Hsiao, Shalu Township, Taichung County, TW;
Shih-chang Chang, Sinhua Township, Tainan County, TW;
Chaochi Huang, Taipei, TW;
Chih-Yung Cheng, Taipei, TW;
Kung-Ho Su, Sijhih, TW;
Ching-Horng Hsiao, Shalu Township, Taichung County, TW;
Shih-Chang Chang, Sinhua Township, Tainan County, TW;
Quarton, Inc., , TW;
Abstract
A non-contact electronic level has a light source, a vial having a bubble and positioned to be irradiated by light from the light source, and a photo sensor located at a position corresponding to the bubble at a fixed distance from the vial. The photo sensor captures an image of the bubble after the vial is irradiated by the light source. An image processing unit is electrically coupled to the photo sensor and converts the image of the bubble into an electronic level signal by comparing the centroid of the image of the bubble with a predetermined point.