Touch pad, method of operating the same, and notebook computer with the same
US8884885B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 18, 2008 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jul 19, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/83
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.