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. 19, 2019
Filed:
Dec. 18, 2015
Applicant:
Zte Corporation, Shenzhen, Guangdong Province, CN;
Inventors:
Assignee:
XI'AN ZHONGXING NEW SOFTWARE CO., LTD., Xi'An, Shaanxi, CN;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); H04N 9/31 (2006.01); H04N 5/74 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3185 (2013.01); G03B 21/14 (2013.01); G03B 21/147 (2013.01); H04N 5/74 (2013.01); H04N 9/3194 (2013.01); H04N 5/7408 (2013.01);
Abstract
Disclosed are a method and an apparatus for correcting trapezoidal distortion of a projection plane. The method includes: measuring a trend of change in a distance to a projection plane by using a rotatable range finder, and determining a correction included angle according to the trend of change; and correcting trapezoidal distortion according to the determined correction included angle.