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. 10, 2015
Filed:
Feb. 22, 2012
Marcello V. Lioy, Mercer Island, WA (US);
Marcello V. Lioy, Mercer Island, WA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A method and apparatus is provided for securely obtaining input from a touchscreen. A secure execution environment may be implemented (e.g., at a processor), where the secure execution environment may include a touchscreen driver. A keypad image may be sent from the secure execution environment to be displayed by a touchscreen. An input location may be received at the secure execution environment from the touchscreen driver. Such input location may be converted at the secure execution environment into a character, symbol, or a request to change the keypad image displayed at the touchscreen. In one implementation, the secure execution environment may further implement a display driver which sends the keypad image to the touchscreen. The secure execution environment may implement driver keypad image mapping function that maps the keypad image to a character set.