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:
Dec. 23, 2025
Filed:
Mar. 15, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Brent Navin Roger Bacchus, Sterling Heights, MI (US);
Alireza Esna Ashari Esfahani, Novi, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A road sign interpretation system includes a perceptual cache storing perceptual hash values that each correspond to image data representing a road sign. Each road sign that corresponds to one of the perceptual hash values stored in the perceptual cache is associated with a road sign identifier. The road sign interpretation system includes one or more controllers in electronic communication with the perceptual cache execute instructions to compute a perceptual hash of a detected road sign within a cropped image frame based on a perceptual hash function and identify a near match between the perceptual hash of the detected road sign and a selected perceptual hash value stored in the perceptual cache. In response to identifying the near match, the controllers interpret the detected road sign represented by the perceptual hash based on the road sign identifier associated with the selected perceptual hash value stored in the perceptual cache.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile