Handwriting input apparatus for inputting handwritten data from unspecified direction

• US 5,389,745 A
• Filed: 09/10/1992
• Issued: 02/14/1995
• Est. Priority Date: 09/11/1991
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Sakamoto, Hiroyuki
• Primary Examiner(s): Chin, Stephen
• Assistant Examiner(s): Kim, Kevin
• Application Number:
  US07/942,842
• Time in Patent Office: 887 Days
• Field of Search: 382/3, 382/44-47, 382/13, 178/185, 178/20, 178/19, 340/712, 345/179, 345/126
• US Class Current: 178/18.03
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

The handwriting input device includes an integrated display input device formed by integrating a display device and a tablet for inputting coordinates one on the other. The integrated display input device is used to input coordinate data of a designated position to an input region displayed on the display device. In accordance with the input region containing coordinate data, handwritten characters, or the like are input to the handwriting input apparatus. The input region is shifted in an arbitrary direction by rotation and transfer in the screen of the display device. In the case where the input region is rotated.

Claims

1. A handwriting input apparatus comprising:

an integrated display input device having a display device and a coordinate detection device for detecting coordinate data, said display device and said coordinate detection device being arranged on one another and forming one unit;

region data storing means for storing data concerning a display region and an input region, said display region having a plurality of sections corresponding to items to be input, and said input region defining a function of inputting data to said sections;

region display means for displaying said display region and said input region on said display device in accordance with the data stored in said region data storing means, a display position in which said input region is defined being represented by display position coordinate data;

section selecting means for selecting one of the sections of said display region displayed by said region display means;

rotation angle setting means for setting a rotation angle indicating a display direction in which said input region, corresponding to the section selected by said section selecting means, is displayed by said region display means;

transfer position setting means for setting a transfer position to which said input region, displayed by said region display means and corresponding to the section selected by said section selecting means, is transferred; and

region renewing means for renewing the display position coordinate data representing the display position of said input region corresponding to the section selected by said section selecting means, in accordance with the rotation angle set by said rotation angle setting means and the transfer position set by said transfer position setting means, and for changing the display position and display direction of said input region, with a display state of said display region being maintained.

2. A handwriting input apparatus according to claim 1, further comprising:

coordinate correction means for correcting a coordinate error between coordinate data input to said input region and coordinate data detected by said coordinate detection device in accordance with the rotation angle of said input region when said input region is rotated by said region data renewing means.

3. A handwriting input apparatus according to claim 1, wherein said input region is defined in accordance with a display size for indicating a range of the input region to be displayed on said display device stored in said region data storing means, said display position coordinate data indicating a reference position of the input region displayed on said display device, a rotation code for indicating a rotation state of said input region, and display control data including display data indicating a display content of said input region.

4. A handwriting input apparatus according to claim 3, wherein said region data renewing means comprises rotation renewing means for renewing said rotation code stored in said region data storing means and renewing said region position data in accordance with the rotation angle set by said rotation angle setting means.

5. A handwriting input apparatus according to claim 3, wherein said region data renewing means comprises:

range renewing means for renewing the display size indicating the range of said input region; and

display size renewing means for renewing said region position data in accordance with the display size renewed by said range renewing means.

6. A handwriting input apparatus according to claim 1, further comprising:

characteristic extracting means for extracting a characterizing pattern from a coordinate data format input in a predetermined position of said input region;

a character recognition dictionary for storing characterizing patterns for character recognition; and

character recognition means for identifying a character by comparing said characterizing pattern extracted and the characterizing patterns in said character recognition dictionary with each other.

7. A handwriting input apparatus according to claim 1, further comprising:

angle changing means for changing an angle of coordinate data format input in the input region in accordance with the rotation angle set by said rotation angle setting means;

characteristic extracting means for extracting a characterizing pattern from the coordinate data format changed by said angle changing means;

a character recognition dictionary in which characterizing patterns for character recognition are stored; and

character recognition means for identifying a character by comparing said characterizing pattern input and the characterizing patterns in said character recognition dictionary with each other.

8. A handwriting input apparatus according to claim 1, further comprising character code generating means for generating code data consisting of a character or character sequence in accordance with the coordinate data input to a predetermined position of said input region.

9. A handwriting input apparatus according to claim 1, further comprising function generating means for generating data for executing a particular function in accordance with the coordinate data input to the predetermined position of said input region.

10. A handwriting input apparatus according to claim 1, wherein said region display means displays the input region including a rotation region and a reference region, and said region renewing means comprises:

means for rotating said input region by a predetermined angle around a predetermined coordinate when coordinate data in the rotation region is input; and

means for moving a position of said input region while showing the movement all the way through to a new position, as coordinate data in said reference region are continuously input.

11. A handwriting input apparatus according to claim 2, wherein said coordinate correction means includes:

reference cursor display means for displaying a reference cursor indicating a reference point in a display image of said display device;

calculating means for calculating a difference between theoretical coordinate data in accordance with said reference cursor and coordinate data accurately input; and

correction value memory means for storing the difference calculated by said calculating means as a correction value.