JPH02207387A - Online handwritten character input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an online handwriting input device, and relates to a correction method in the case of misrecognition.

[Conventional technology]

In the conventional online handwriting input device, JP-A-54-71
As in No. 937, only one recognition result is displayed in the recognition result display area, and candidate characters are displayed in a display area separate from the recognition result display area.

[Problem to be solved by the invention]

The above conventional technology displays the character of the standard dictionary pattern closest to the input cover turn (hereinafter referred to as the first candidate character) as the recognition result, but the distance between the input cover turn and the first candidate standard dictionary pattern is to some extent. If the pattern is too large, there is a possibility of misrecognition since the meaning is quite different from the standard dictionary pattern, which is a problem if the recognition result is not determined as it is. or.

Although it is possible to display and select candidate characters, the display position and the recognition result display position are separate, making the operation complicated.

An object of the present invention is to warn the inputter when there is a high possibility of erroneous recognition as described above, and to facilitate correction of erroneous recognition.

[Means to solve the problem]

In order to achieve the above purpose, if the distance between the input character pattern and the standard dictionary pattern of the first candidate character is greater than a certain threshold, not only the first candidate character but also the second and subsequent candidates are displayed on the input integrated display. A plurality of candidate characters are also displayed in a moving manner, and the recognition result can be determined from among them according to instructions from the inputter.

[Effect]

When an input character pattern is input as a pattern that deviates greatly from the standard dictionary pattern of that character, the distance between patterns becomes large. In some cases.

The distance between standard dictionary patterns of different characters may be smaller. If characters close to the standard dictionary patterns are written correctly, the distance between the standard dictionary patterns will be the smallest compared to the distances between the standard dictionary patterns of other characters, and will probably be less than a certain threshold. Therefore, if the distance between the input patterns of the first candidate exceeds a certain threshold, there is a high possibility that the input character will exist in the second or subsequent candidates, and not only the first candidate but also the second and subsequent candidates will be displayed on the input integrated display. The user is then asked to decide which characters he or she really wants to input. Thereby, when there is a high possibility of erroneous recognition, it is possible to prompt the inputter to be careful and to facilitate correction operations.

〔Example〕

Two embodiments of the present invention will be described below with reference to FIGS. 1 to 3. In FIG. 1, reference numeral 1 indicates an input display--a body shape display where characters are entered using a special pen 2 attached to this display, and the handwriting of the characters is displayed.

Displays recognition results, etc. Reference numeral 2 denotes a character recognition unit which inputs and analyzes coordinate data from the input integrated display, and when the coordinate data is character data, performs recognition processing by pattern comparison with the dictionary 5 and outputs the result. 3 is a display control unit that controls the display of handwriting, recognition results, etc. on the input/display integrated display.

Next, the operation of this embodiment will be explained. FIG. 2 shows the display state of the input/display integrated display. When a character is input into the input character frame 1α, its coordinate data is sequentially input to the character recognition unit 3 in accordance with the movement of the dedicated pen 2. This coordinate data is further displayed as handwriting in the recognition result display area 1b of the input-integrated display 1 via the display control section 4.

Next, when the recognition process is completed in the single character recognition unit 3, the result is displayed in print on the recognition result display unit 1b of the input display integrated display 1 via the display control unit 4. The character recognition unit 3 compares the input character pattern with the standard dictionary pattern of the dictionary 5 and calculates the inter-pattern distance ΔP. Minimum value of ΔP ΔPm1n
If it is smaller than a certain threshold pth, the character corresponding to the minimum value is directly output to the recognition result display section 1b as a recognition result. However, if ΔPm1n is larger than the threshold Pth, the possibility of erroneous recognition increases, so the recognition result display section 1b
As shown in FIG. 3, not only the characters corresponding to ΔPm1n but also all the characters from the minimum value of ΔP to the 10th are displayed as candidate characters.

If there is a character you want to input among these 10 candidate characters, when you specify that character with the special pen 2, its coordinates are input to the character recognition unit 3, and it is recognized that you have specified that character from among the candidate characters. Only the instruction characters are displayed on the recognition result display section 1b. The candidate character display/selection function for input characters not only meets the above-mentioned conditions, but also displays 10 candidate characters in the candidate character display area 1c when the character is indicated with the special pen 2 even if the character is displayed after the recognition result is confirmed. and.

Even if the recognition result is confirmed, if it is incorrectly recognized, the recognition result can be replaced with the desired character by selecting a candidate character.

In this embodiment, 10 candidate characters are displayed, but any number of candidate characters may be displayed.

Furthermore, in this embodiment, the candidate character display position when there is a high possibility of erroneous recognition is set to the recognition result display section 1b.

It may also be used as input character frame 1α.

According to this embodiment, there is an effect that correction operations are facilitated when there is a high possibility of misrecognition in the recognition result.

〔Effect of the invention〕

According to the present invention, when there is a high possibility of misrecognition in the recognition result of an input character, multiple candidate characters are displayed instead of displaying only one character as the recognition result and the inputter is asked to select. This has the effect of improving the operability of the online handwritten character recognition device.

[Brief explanation of the drawing]

FIG. 1 is a diagram of a device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of a display example of an integrated input display, and FIG. 3 is an explanatory diagram of an example of candidate character display. 1...Input display integrated display. 2...Special pen. 3...Character recognition section. 4...Display control section. 5...Standard character Bata-n dictionary. Collection 1 Figure

Claims (1)

[Claims] 1. A coordinate input unit consisting of a coordinate indicating pen and a detection unit, which compares a character pattern formed by a group of coordinate data of characters input to the coordinate input unit with a standard dictionary pattern stored in advance. A character recognition unit that outputs the character code of the standard dictionary pattern with the closest inter-pattern distance as the first candidate character, and the second to Nth closest characters as the next candidate character group, overlaps with the coordinate input unit and is integrated with the coordinate input unit. In an online handwritten character input device that has a structure such as ROM and a display unit that displays the first candidate character and the next candidate character group in print, there is a certain distance between the patterns of the first candidate characters. If the recognition result is below the threshold, it is assumed that the recognition result has been finalized, and the character is enlarged from the data in the print font ROM and displayed in the character frame of the recognition result display area on the display section, and the pattern between the first candidate characters is If the distance is greater than or equal to the threshold, the recognition result is determined to be uncertain, and the first candidate character and the next candidate character group are displayed in one character frame in the recognition result display area in the same size as the data in the print font ROM. When the recognition result is uncertain, if you indicate the character to be input from among the candidate characters with the coordinate indicating pen, the character recognition section will recognize the coordinates and erase all other candidate characters by instructing the display section. , an online handwritten character input device characterized by enlarging and displaying only the designated characters.