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:
Sep. 18, 2001
Filed:
May. 06, 1999
Jin-chul Lee, Anyang, KR;
Samsung Electronics Co., Ltd., Kyungki-Do, KR;
Abstract
A software keyboard system using the trace of a stylus and a method of recognizing key codes in accordance with the keyboard system are provided. The software keyboard system includes a screen for displaying a keyboard image or other information, a touch panel formed of a transparent material covered on the screen, for generating a coordinate value in accordance with a position pressed by a stylus, an analog-to-digital (A/D) converter for converting an analog coordinate value generated by the touch panel to a digital coordinate value, a memory for storing names of keys forming a keyboard image displayed on the screen and direction range information of a plurality of key codes assigned to each of keys, and a controller for displaying the keyboard image formed by the key names on the screen, receiving a digital value for the trace of the stylus output from the analog-to-digital (A/D) converter to retrieve a position of the stylus and a direction of the trace, reading a key code from the memory according to the stylus position and the trace direction, and outputting the key code. Thus, one key includes numerous codes, to thereby reduce the number of keys, so that the size of the keyboard is reduced without reducing the key size, to thereby facilitate use of the key.