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. 16, 2021
Filed:
Dec. 20, 2016
China Unionpay Co., Ltd., Shanghai, CN;
Bin Liu, Shanghai, CN;
Jianzhao Wu, Shanghai, CN;
Yisheng Fu, Shanghai, CN;
Guizhi Shi, Shanghai, CN;
CHINA UNIONPAY CO., LTD., Shanghai, CN;
Abstract
A method of processing card number data and device including: determining, according to an expiration time corresponding to a card number, a table set corresponding to the card number, and including card number information corresponding to the card number into at least one card number storage table of the table set, wherein the table set comprises a plurality of card number storage tables, each table set corresponds to an expiration time, the expiration time corresponding to all card numbers in the table set is the same as the expiration time corresponding to the table set, and the card number information includes the card number and card number associated data; and after reaching an expiration time corresponding to a table set, performing a cleaning operation on all card number information in the table set. The provided method and device can increase cleaning and maintenance efficiency and reduce maintenance costs.