JP3085552B2 - Character input / cursor instruction determination method in online handwriting input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for judging a character input / cursor instruction in an online handwriting input device integrated with an input display, which has a particularly suitable man-machine interface and has a good input efficiency. Character input / cursor instruction determination method in the online handwriting input device of the present invention.

[0002]

2. Description of the Related Art In a conventional input / display integrated online handwriting input device, a pen or the like is used to designate the position of a cursor, and a cursor movement destination in the input / display integrated unit is touched and indicated with a pen or the like. The cursor was moved to the indicated position.

[0003] As a prior art related to the present invention, there is an invention disclosed in, for example, Japanese Patent Application Laid-Open No. 60-175191.

[0004]

In the above-mentioned prior art, there is a problem that it is impossible to distinguish whether the input is a cursor position designation or a handwriting input when a handwriting input is made directly on the input / display integrated unit. there were.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. In an input / display-integrated online handwriting input device, a special mode changeover switch is used to distinguish between the cursor position indication and handwriting input. It is intended to be easily performed by an input operation of an operator without providing.

[0006]

In order to achieve the above object, the length of an input stroke of the first stroke is measured. If the length is equal to or greater than a certain threshold value, character input is performed. It is determined to be an instruction.

[0007]

The input-integrated online handwriting input device adopting the present invention reads the length of an input stroke of the first stroke when an input is made at the input section. If the input stroke is longer than a certain threshold value, the stroke is read. Is determined to be a character input, and if shorter, it is determined to be a cursor movement instruction.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, a coordinate data sequence of a stroke input to the character input unit 1 a on the coordinate input unit 1 with the stylus pen 8 is input to the coordinate analysis unit 3. The coordinate analysis unit 3 determines whether or not the input coordinate data sequence is data on the character input unit 1a. If the input coordinate data sequence is data on the character input unit 1a, the coordinate analysis unit 3 displays the input coordinate data sequence on the cursor. Output to the display control unit 6 via the analysis unit 5. The display control unit 6 displays a handwriting at the input position of the stylus pen 8 on the display unit 2 based on the input coordinate data sequence. Next, the coordinate analysis unit 3 determines whether the input stroke is a cursor instruction or a character input. When it is determined that the cursor is designated, the cursor analysis unit 5 analyzes the cursor position designated by the stylus pen, and outputs cursor position data indicating the position designated by the cursor to the display control unit 6. The display control unit 6 displays a cursor at a display position on the display unit 2 corresponding to the cursor position data input from the cursor analysis unit 5. The coordinate input unit 1 is made of a transparent material such as glass and is arranged so as to overlap the display unit 2. Therefore, the operator can visually recognize the display content of the display unit 2 from the coordinate input unit 1 side, and can confirm that the cursor has moved to the position indicated by the stylus pen 8.

When the coordinate analysis unit 3 determines that the input stroke is a character input, the coordinate data string of the input stroke is input to the character recognition unit 4. The character recognition unit 4 compares the input stroke with a standard dictionary pattern of characters registered in the recognition dictionary 7 in advance, recognizes a character code of a character of the standard dictionary pattern closest to the input stroke, and Display position data on the display unit 2 is obtained based on the input position of the input stroke, and the recognized character code and the obtained display position data are simultaneously output to the display control unit 6. The display control unit 6 displays the character recognition result on the display unit 2 in a print font (for example, indicated by reference numeral 12 in the drawing) at the input position based on the character code and the display position data.

The menu input section 1b is formed by a sheet pasted on the coordinate input section 1, and this sheet is divided into regions for each character and printed. When the menu input unit 1b is touch-input by the stylus pen 8, the coordinate data is output from the coordinate analysis unit 3 to the menu analysis unit 9. The menu analyzer 9 outputs the character code of the character menu corresponding to the input coordinate data to the display controller 6, and displays the type font at the cursor position.

As described above, the coordinate input unit 1 is made of a transparent material such as glass, and is arranged so as to overlap the display unit 2. Therefore, the operator operates the coordinate input unit 1
The display contents of the display unit 2 can be visually recognized from the side, the handwriting display at the input position and the character font display as an analysis result thereof can be confirmed, and the input can be performed as if directly writing on the display unit 2.

Next, a method of determining whether the input stroke is a cursor instruction or a character input in the coordinate analysis unit 3 will be described. As shown in FIG. 2, a certain threshold value Lt is set for the stroke length L of the first stroke of the input by the stylus pen 8, and 1 is set as shown in the input position 10a.
If the stroke length L of the image is smaller than the threshold Lt, the input is determined to be a cursor instruction, and if the stroke length L is larger than the threshold Lt as shown at the input position 10b, it is determined to be a character input.

According to this embodiment, there is an effect that a cursor instruction indicating a character input position in menu input and a handwritten character input can be distinguished and input without extra operation such as mode switching.

In the embodiment shown in FIG. 1, a sheet is pasted on the coordinate input section 1 to provide the menu input section 1b.
As shown in the figure, a configuration may be adopted in which menu contents are displayed on the display unit 2 and a menu input unit 2b is provided. According to the configuration shown in FIG. 3, since the coordinate input unit 1 is transparent and is in close contact with the display unit 2, it has a function equivalent to that of the above-described embodiment, and allows menu character input. In the example shown in FIG. 3, by changing the display content of the menu character input unit 2b, there is an effect that the type, arrangement, and the like of the menu input characters can be easily changed.

In the embodiment shown in FIG. 1, if the stroke length L of the first stroke is smaller than the threshold value Lt, it is unconditionally determined that the cursor is pointed. However, if the cursor exists at the input position, the cursor instruction at the cursor position is meaningless as an operator operation. In addition, if the cursor remains displayed, handwriting of the input characters cannot be displayed. Therefore, even if the stroke length L of the first stroke is shorter than the threshold Lt, if the input is at the cursor position, the cursor is erased at the moment when the stylus pen 8 touches the cursor position, and the handwriting of the input character is erased. And all input is determined to be character input. 4 and 5 show this state. As shown in FIG. 4, it is assumed that a character is input to the input position 11 when the cursor is located at the input position 11 of the character input unit 1a. At this time, as shown in FIG. 5, the cursor is deleted immediately after the input, and character recognition is performed by determining that the character is a character even if the stroke length L of the first stroke is smaller than the threshold value Lt. In this example, there is an effect that the character input at the cursor position can be naturally and efficiently performed.

In the embodiment shown in FIG. 1, the first stroke of a character such as a hiragana "u" or a kanji character of "3" is short by a writer, and the input may be determined as a cursor. Therefore, as shown in FIG. 6, even if the stroke length L1 of the first stroke is shorter than the threshold Lt, if there is an input of the second stroke or later at the input position 11 within a certain time, it is determined that the character is a character. FIG.
According to the example shown in (1), even when the stroke length of the first stroke is a short character and the character is erroneously recognized as a cursor as it is, there is an effect that the character can be correctly recognized as a cursor.

[0017]

As is apparent from the above description, according to the present invention, in the input / display integrated online handwriting input device, whether the input is a character input or a cursor instruction is selected by a switch or menu selection. Thus, the input can be distinguished and input by a natural operation of the operator without switching the mode, and the input efficiency can be improved.

Further, according to the present invention, even when a character is input at the cursor position, the character input at the cursor position can be naturally and efficiently performed, and the burden on the operator can be reduced.

Further, according to the present invention, even if the stroke length of the first stroke is short, the character is not erroneously recognized as a cursor, and the trouble of correction can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a method for determining a cursor instruction and character input in the embodiment shown in FIG. 1;

FIG. 3 is an explanatory view showing another configuration example of the input display integrated display unit.

FIG. 4 is a diagram showing an example of a case where a character is input at a cursor position.

FIG. 5 is a diagram illustrating an example of a case where a character is input at a cursor position;

FIG. 6 is an explanatory diagram showing an example of character input in which the stroke length of the first stroke is short.

[Explanation of symbols]

 Reference Signs List 1 coordinate input unit 1a character input unit 1b menu input unit 2 display unit 2a coordinate input unit 2b menu input unit 3 coordinate analysis unit 4 character recognition unit 5 cursor analysis unit 6 display control unit 8 stylus pen 9 menu analysis unit

Continuation of the front page (56) References JP-A-2-252016 (JP, A) JP-A-2-113386 (JP, A) JP-A-1-237779 (JP, A) (58) Fields surveyed (Int .Cl. ⁷ , DB name) G06F 3/03 G06F 3/033 G06K 9/20 G06K 9/62

Claims (3)

(57) [Claims] A coordinate input unit for outputting a data string indicating an input character or the like, comprising: a pointing unit for pointing coordinates; a coordinate detecting unit for reading a position coordinate pointed by the pointing unit; A pattern recognition unit that recognizes an input pattern such as a character formed by a data string output from the input unit, and a pattern recognition unit that is arranged so as to overlap the coordinate input unit, displays a character or the like as a recognition result, and displays a cursor In the online handwritten character input device integrated with an input display, which is composed of a display unit and a display unit, it is determined whether or not the length of the first stroke of the input stroke is shorter than a predetermined value, and is determined to be short. Character input / cursor in an online handwriting input device, wherein the input is determined as a cursor instruction when the input is performed, and the input is determined as a handwritten character input when the input is determined to be long. Sol instruction determination method. 2. The online handwriting according to claim 1, wherein when the input stroke of the first stroke is located at a cursor position, the input is determined as a character input regardless of the length of the input stroke. Character input on input device /
Cursor instruction determination method. And determining whether or not the length of the input stroke of the first stroke is shorter than a predetermined value. If the length of the input stroke is determined to be short, the input of the second stroke is determined within a predetermined time. If performed for the same input position in the range,
The input is determined to be a character input.
Character input / cursor instruction determination method in the online handwriting input device described in the above.