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. 10, 2023
Filed:
Aug. 24, 2021
Wai Kin Cheung, Hong Kong, CN;
Wai Kin Cheung, Hong Kong, CN;
Abstract
A cloud door lock control system with identification of time varied 2D codes is provided. A cloud device transmits the encryption codes of doors to be opened, the time periods for opening the doors, and the user's encryption codes to the handset through a communication channel and the handset stores these values in a memory. A mobile phone APP receives these values and encrypts them by using a specific encrypting code. The encoding way for the encoding unit is time varied, that is, the QR code from the encoding unit is only retained for a preset time period; after the preset time period has elapsed, the encoding unit generates another QR code. When the cloud device receives the QR code from a card reader, it is decoded. These decoded data is compared with those stored in the cloud device to determine whether the door is necessary to be opened.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile