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:
Oct. 14, 2025
Filed:
Feb. 28, 2022
Applicant:
Lenovo (Beijing) Limited, Beijing, CN;
Inventors:
Assignee:
LENOVO (BEIJING) LIMITED, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06V 30/16 (2022.01); G06T 5/70 (2024.01); G06V 30/14 (2022.01); G06V 30/146 (2022.01);
U.S. Cl.
CPC ...
G06V 30/16 (2022.01); G06T 5/70 (2024.01); G06V 30/1444 (2022.01); G06V 30/147 (2022.01);
Abstract
A focus detection method includes: acquiring an image of a test object through a to-be-tested image acquisition device, the test object including a character, and a clarity of the character corresponding to a minimum clarity with which a content of the character is still able to be recognized using a character recognition technology; performing character recognition on the image to obtain a recognition result; and determining a focus detection result for the to-be-tested image acquisition device based on the recognition result.