Hand-written character recognition apparatus with a personal dictionary preparation function

• US 5,592,565 A
• Filed: 07/11/1994
• Issued: 01/07/1997
• Est. Priority Date: 07/17/1987
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kuzunuki, Soshiro, Fukunaga, Yasushi, Matsuda, Toshihiko, Takekoshi, Toshio, Miura, Masaki, Mori, Junko, Mifune, Toshimi, Shojima, Hiroshi
• Primary Examiner(s): COUSO, YON JUNG
• Application Number:
  US08/267,847
• Time in Patent Office: 911 Days
• Field of Search: 382/13, 382/30, 382/69, 382/185, 382/187, 382/188, 382/217, 382/218, 395/2, 178/2 R, 341/90
• US Class Current: 382/185
• CPC Class Codes: G06F 18/28 Determining representative reference patterns, e.g. by averaging or distorting; Generating dictionaries
• CPC Class Codes: G06V 30/373 using a special pattern or subpattern alphabet

Abstract

A hand-written character recognition apparatus with a personal dictionary preparation function has a character recognition unit for comparing an input hand-written character data with a registered standard dictionary to recognize a most similar character pattern, and a display unit for selecting and displaying a display font corresponding to the recognized character pattern, so that a personal peculiar character or simplified character inputted can be recognized. When a personal dictionary is to be registered, the character to be registered is inputted by hand-writing, the character recognition unit compares the input hand-written character data with the standard dictionary to recognize a similar character pattern, and the recognized character code of the standard dictionary is selected as the character code to be registered. When the personal dictionary is to be prepared, a personal pattern input frame which permits simultaneous input of a plurality of personal hand-written character patterns is provided, and the input personal patterns are allotted to one character code to be registered. When the personal character pattern is to be prepared and registered, similarity between the input personal pattern and the registered dictionary pattern is checked, a stability index indicating a degree of stability of recognition of the personal pattern is calculated based on the similarity, and the stability index is displayed.

Claims

1. A hand-written character recognition apparatus with a personal dictionary preparation function, comprising:

input means for time serially inputting hand-written character data;

character recognition means for comparing the input hand-written character data from said input means to standard character patterns registered in a standard dictionary to recognize a similar character pattern;

a personal dictionary registering personal character patterns and corresponding character codes of these characters in pairs;

display means for selecting and displaying a display font corresponding to the recognized character pattern;

means, responsive to a character to be registered being inputted by hand-writing, for causing said character recognition means to compare inputted first hand-written character data of a personal character pattern to be registered to the standard character patterns registered in said standard dictionary to recognize a similar character pattern, and for selecting a code of the recognized standard character pattern as a character code of the character to be registered;

means for registering inputted second hand-written character data of a personal character pattern in said personal dictionary in corresponding relation to said selected code; and

means for calculating a similarity between said inputted second hand-written character data and personal character patterns registered in said personal dictionary, for calculating a stability index indicating a degree of stability of recognition of said inputted second hand-written character data and for transmitting said stability index to said display means, said inputted second hand-written character data being different from said inputted first hand-written character data.