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:
Nov. 11, 2014
Filed:
Dec. 18, 2008
Xiangtao Liu, Beijing, CN;
Lei MA, Beijing, CN;
Xiangtao Liu, Beijing, CN;
Lei Ma, Beijing, CN;
Beijing Lenovo Software Ltd., , CN;
Lenovo (Beijing) Limited, , CN;
Abstract
The present invention relates to the field of touch pad. In particular, there is provided a touch pad comprising a storage unit, a sensing electrode array unit and a processing unit. A trace graph composed of coordinate values of positions on the sensing electrode array unit, touched by a user in the course of operating the touch pad is recorded; comparison is made between the trace graph and a graphical password to generate a comparison value. Since the touch pad is provided with the function of recognizing the graphical password, a computer can use it to input graphical password, text password, and various characters in various states such as BIOS state and a variety of OS states, which can enhance the security of devices such as computers and make the product more interesting and easy to use.