Character recognition apparatus with inputting function of ruled lines

• US 5,065,438 A
• Filed: 10/24/1989
• Issued: 11/12/1991
• Est. Priority Date: 10/27/1988
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Hirose, Hitoshi, Togawa, Fumio
• Primary Examiner(s): Boudreau, Leo H.
• Assistant Examiner(s): Stellrecht, Barry
• Application Number:
  US07/425,967
• Time in Patent Office: 749 Days
• Field of Search: 340/706, 340/707, 340/710, 178/18, 382/13, 382/59, 382/61, 382/60, 364/518, 364/521, 358/401, 358/448, 358/451, 358/452, 358/453, 358/462
• US Class Current: 382/202
• CPC Class Codes: G06F 3/018 Input/output arrangements for oriental characters
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text

Abstract

A character recognition apparatus includes an inputting function of ruled lines. The apparatus is equipped with a tablet type input device integrating a tablet type input device with a display panel. The apparatus includes a control unit that recognizes information inputted in an input panel by a stylus pen. There is a memory unit for storing the recognized information. The control unit sets a grating-like virtual frame in the input panel. The frame set in the input panel is a virtual boarder obtained by calculation and does not appear on a display panel.

Claims

1. A character recognition apparatus for inputting ruled lines which comprises:

an integrated tablet input device including an input panel and a display panel, the input panel detecting and recognizing information inputted by a stylus pen;

virtual frame setting means for setting a number of virtual frames including grating-like sections within the input panel;

detection means for detecting positional information of the stylus pen indicated on the input panel;

conversion means for converting the positional information of the stylus pen detected by the detection means into a positional information of the virtual frame;

memory means for storing the positional information of the virtual frame;

comparison means for comparing through the positional information of the virtual frames the positions of the stylus pen provided before and after movement thereof on the input panel; and

ruled line input means for inputting a ruled line with a unit length of one frame width and the ruled line being located in at least two virtual frames when the stylus pen is moved therebetween.

2. A character recognition apparatus of claim 1, wherein the display panel is a flat display panel selected from the group consisting of an LCD, an EL display or a plasma display.

3. A character recognition apparatus of claim 1, wherein the virtual frame is so adapted that an intersection point of vertical and transverse lines of the virtual frame is set to be in an area to receive written input so as to be displaced from a character edge at half a character width.

4. A character recognition apparatus of claim 1, wherein the virtual frame is so adapted that an intersecting point of vertical and transverse lines of the virtual frame is set to be in an area to receive written input so as to be displaced at half a character width in transverse position from the center of characters displayed in the display panel.

5. A character recognition apparatus of claim 1, wherein the positional information of the stylus pen represents values of coordinates in traverse and vertical directions.

6. A character recognition apparatus of claim 1, wherein the positional information of the virtual frames is vertical and transverse numbers obtainable by dividing vertical and transverse coordinates of the stylus pen by vertical and transverse unit lengths of ruled lines.

7. A recognition apparatus which can accurately input lines inputted by an input device comprising:

an input-display tablet for receiving an input;

control means operatively connected to the input-display tablet for receiving information from the input-display tablet and outputting information to the input-display tablet, and outputting commands;

for

a recognition unit operatively connected to the control means for receiving information from the control means and processing the information to produce a recognized result corresponding to input information and outputting the processed information to the control means; and

a ruled line unit that includes a virtual frame unit for receiving commands from the control means for performing a ruled line process to produce a ruled line having a length related to a virtual frame.

8. The apparatus of claim 7 wherein the ruled line unit includes a virtual frame number computing unit;

a virtual frame buffer for providing memory; and

a virtual frame judging unit for comparing.

9. The apparatus of claim 8 wherein the virtual frame number computing unit functions as a virtual frame setting device and a converting device.

10. The apparatus of claim 9 wherein the input-display tablet is formed as a laminated structure.

11. The apparatus of claim 10 wherein the laminated structure includes an El device sandwiched between glass plates.

12. The apparatus of claim 9 wherein the input device is a stylus pen.

13. The apparatus of claim 9 wherein the ruled line has a unit length of one frame width and is located in at least two virtual frames.

14. The method of producing ruled lines in a character recognition apparatus with the use of a stylus pen comprising the steps of:

(a) inputting rule line information with the stylus pen to an input-display panel;

(b) setting in the input-display a plurality of virtual frames which include grating sections;

(c) detecting the position of the stylus pen on the input-display panel;

(d) converting the position of the stylus pen into positional information on the virtual frames.

(e) storing the information produced in step (d);

(f) comparing the positional information of the stylus pen on the virtual frames before and after movement of the stylus pen; and

(g) producing a ruled line with a unit length of one frame width and is located in at least two virtual frames when the stylus pen is moved between the at least two virtual frames.