Device and method for recognizing characters input through a touch screen

• US 7,050,046 B1
• Filed: 11/22/1999
• Issued: 05/23/2006
• Est. Priority Date: 11/20/1998
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Joung-Kyou, Do, Jung In
• Primary Examiner(s): Liang, Regina
• Assistant Examiner(s): Nguyen, Jennifer T.
• Application Number:
  US09/447,080
• Time in Patent Office: 2,374 Days
• Field of Search: 345173-178, 345157-158, 345141-142, 345/87, 345/116, 345333-334, 345339-340, 345/348, 341/22, 341/28, 382181-189, 382229-230, 382/315, 382/321, 382/317, 382/202, 178 1801- 1809, 178/19.03, 178/20.01, 235/380, 713/320, 710/107
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: G06V 30/347 Sampling; Contour coding; Stroke extraction

Abstract

A character recognition device for recognizing characters input through a touch screen, comprises a touch screen data recorder for storing the touch screen data generated from an input of a character, a timer for counting a predetermined waiting threshold time when there is no touch screen data generated, and a character recognition processor for performing character recognition of the stored touch screen data as a character. If freshly stored touch screen data is generated before the completion of counting the predetermined waiting threshold time, the freshly stored touch screen data is added to the previous touch screen data to complete the character.

Claims

1. A character recognition device for recognizing a character input through a touch screen comprising:

a touch screen data recorder for storing touch screen data generated from input of a stroke, wherein said character is recognized in response to said stroke or in response to a plurality of strokes;

a timer for counting a predetermined waiting threshold time when there is no touch screen data generated; and

a character recognition processor for performing character recognition of the stored touch screen data at each time when each stroke is input through said touch screen, wherein all the touch screen data are recognized as a single character when said predetermined waiting threshold time is completely counted,

wherein the character recognition and the counting of the threshold time occur wherein character recognition is restarted in response to the start of a second stroke of said character.

2. A character recognition device as defined in claim 1, wherein said touch screen recorder and character recognition processor are designed to have multi-tasking functions, thereby performing the corresponding function when a touch screen data is generated and stored.

3. A character recognition device for recognizing characters input through a touch screen, comprising:

a touch screen data recorder for storing touch screen data generated from an input of a first stroke of a character wherein character recognition is restarted in response to the start of a second stroke of said character

a timer for counting a predetermined waiting threshold time when there is no touch screen data generated; and

a character recognition processor for performing character recognition of said stored touch screen data as a character, wherein a freshly stored touch screen data generated before completion of counting the predetermined waiting threshold time is added to the previous a touch screen data recorder for storing touch screen data generated from an input of a first stroke of a character wherein character recognition is restarted in response to the start of a second stroke of said character.

4. A character recognition device as defined in claim 3, wherein said character recognition processor outputs a character code corresponding to a recognized character when another touch screen data is not generated before completion of counting to said predetermined waiting threshold time.

5. A character recognition method for recognizing characters input through a touch screen, comprising the steps of:

storing touch screen data generated from an input of a first stroke of a character wherein character recognition is restarted in response to the start of a second stroke of said character

performing character recognition of said stored touch screen data as a character; and

in case that another touch screen data is generated within a predetermined waiting threshold time, stopping the above operation and adding both the previously generated touch screen data and the newly generated touch screen data together as one character to thereby storing touch screen data generated from an input of a first stroke of a character wherein character recognition is restarted in response to the start of a second stroke of said character.

6. A method as defined in claim 5, including the further step of outputting a character code corresponding to a result of said character recognition when a further touch screen data is not recognized within said predetermined waiting threshold time.