JPS59132031A - Character input device - Google Patents

Abstract

PURPOSE:To make the input of external characters easy, by writing the symbol of an external character, which is not included in a dictionary, in a control code entry frame, which is provided in a part of an entry frame on a form, to omit the collation with the dictionary and storing its character pattern in a preliminarily determined address. CONSTITUTION:A control code entry frame 10 is provided in a part of a character entry frame 9 provided on a form 1, and a control code is written there if a character in the entry frame 9 is an external character which is not included in a dictionary. The entry frame 9 on the form 1 is scanned by a scanning part 2 to store temporarily the character in a memory 3, and the character is made binary and has the pattern normalized in a preprocessing part 4 and is stored in a pattern memory 5. With respect to the character for which the control code is not written a recognizing dictionary 7 is retrieved by a recognizing part 6, and the character code is outputted from an output line 81 of an output part 80. With respect to the external character for which the control code is entered, the pattern itself is outputted immediately from an output line 82 of the output part 80 and is stored in a preliminarily determined address position of a storage device. Thus, the input of external characters is made easy.

Description

[Detailed Description of the Invention] This invention enables characters written on a recording medium such as a form to be
It relates to a character input device that converts the character into a code representing the character and inputs it into a storage device.More specifically, it targets a very large number of character types such as kanji, and reads it from the storage device and displays or displays it. The present invention relates to a character input device used for printing.

The configuration of a conventional device of this type is shown in FIG. In the figure (
1] is a form, (2) is a scanning unit, (3) is a buffer memory, (41 is a preprocessing unit, 151 is a Fi pattern memory, (
6) is a recognition unit, (71 is a recognition dictionary, and (81 is an output unit).

The scanning unit (2) scans the characters written or printed on the form (1).
The video signal, which has been converted into an electrical signal, is stored in a buffer memory (31). The preprocessing section (4) is a buffer memory (3).
The video signal stored in the video signal is subjected to predetermined preprocessing such as binarization and pattern normalization, and then sent to the pattern memory (5).

Therefore, when a predetermined area on a form containing characters is decomposed into a predetermined number of pixels, the pattern memory (51) stores logic rO
Each bit represented by a signal of J or "1" is arranged in an arrangement similar to the arrangement of pixels. This is called a character pattern.

In the recognition dictionary (7), for every character within a predetermined range, a standard character pattern of the character and a character code representing the character are stored in association with each other. The character pattern when referring to the recognition dictionary 17) includes not only the character pattern itself but also the case where various features extracted from the character pattern are stored in place of the character pattern.

The recognition unit (6) recognizes the character pattern stored in the pattern memory (5)! Decide which character pattern is most similar to (7), and output the character code corresponding to the most similar character pattern to the output section (
8) and then output.

Figure 2 is a diagram showing an example of writing in the form (1), and (9) shows a frame in which characters are written, and each character is entered in the frame (9) for convenience of scanning by the scanning unit (2). It shall be filled out or printed. Inside the frame (9), for example, move 3 horizontally.
Divide into 2 equal parts, vertically divide into 32 equal parts, and divide into 17 equal parts of the area of frame (9).
(32 x 32) micro-section with area of 32
Assuming that 32 are made, one micro-section is defined as one pixel, and logic r is used to determine whether each pixel is at white level or black level.
If the white and black levels of each pixel are represented by two short signals OJ and rIJ and stored in a 32 x 32 bit memory, the character pattern of the characters in the frame (9) can be stored. Further, the features extracted from the character pattern of each character can be displayed in decimal bits even in 32 x 32 pits for one character pattern. Furthermore, if the recognition dictionary (7) stores, for example, 4,000 characters that differ from each other, the character code can be created as a 12-bit code (212>4,000).

If the recognition dictionary (7) stores character pattern features and character codes in correspondence, the recognition unit (6) extracts all the features from the character pattern stored in the pattern memory (5). , searches the recognition dictionary (7) for the feature most similar to this extracted feature, and outputs the character code corresponding to the searched feature to the output unit (81).

By the way, if the characters registered in the recognition dictionary (7) are temporarily called internal characters, it is not practical to increase the total number of internal characters too much. In order to read a character pattern from a stored character code and display or print that character pattern on a display device, a font memory (font n
This is because the capacity of both the font memory and the recognition dictionary increases as the total number of internal characters increases.

If a character other than the internal character (hereinafter referred to as external character) is entered in the form (11), the recognition result in 61 rejects the character pattern of the external character, or any character pattern among the internal characters. Therefore, when attempting to input external characters using the conventional device, a complicated input device using a keyboard or the like is required, which is separate from the system shown in Figure 1. was there.

This invention was made to eliminate the above-mentioned drawbacks of conventional devices.In this invention, a control symbol entry frame is provided at a position corresponding to a character entry frame on a form, and a control symbol is entered in this frame. The character pattern of the character determined to be a custom character is not searched in the recognition dictionary, and the character (turn) is moved to a predetermined address position in the storage device. Store it in
By outputting the address indicating the storage location as a character code for a non-standard character, it is possible to easily input a non-standard character.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 3 is a diagram showing an example of how to write a form in an embodiment of the present invention, in which the same reference numerals as in FIG. 2 indicate all the same parts, (1 is a control symbol entry frame, ), (9c) indicate that the characters entered in the character entry frame are external characters. Fig. 4 is a block diagram showing an embodiment of this invention, and the same reference numerals as in Fig. 1 indicate the same or equivalent characters. (80) is the output part corresponding to 18) in Fig. 1, but the output line (81) of the character code corresponding to the output of the output part (8) in Fig. 1 is
) is provided with a character pattern output line (82).

In the scanning section (21), the control symbol entry frame i1α is also scanned at the same time as the character entry frame (9), and characters on which no control symbol is written are determined to be internal characters, and the same processing as explained in connection with Fig. 1 is performed. A character code is output from the output line (81).However, in this case, a bit (for example, one bit of logic "0") indicating that it is an internal character code is added.

The character whose control symbol is detected in the scanning unit (2) is determined to be a custom character, and the character pattern itself is sent to the output unit (8) without performing the process of searching the recognition dictionary (7) for the custom character.
0) from the output line (82) and stores the character pattern at a predetermined address position in the storage device. For convenience when reading and displaying character patterns, the character patterns of external characters stored in the storage device should have the same bit configuration as the character patterns of internal characters stored in the font memory. The address area for storing the character pattern may be determined in advance, and the number may be sequentially increased according to the scanning order on the form. For example, in Fig. 3, the frame (9a), (
The character patterns of the external characters in 9b), (9c), ... are 'xoo', 'xoi', respectively.
Store it in the address position of '
) and input it in the same way as the internal character code.

However, in this case, a bit indicating that it is a private character code (for example, one bit of logic "1") is added.

゛ When displaying or printing a character turn by reading a character code, read the stored character code output from the output line (81), and if it is an internal character code, address it to the font memory. , if it is a private character code, it is sufficient to address the address position indicated by the private character code.

Note that, regardless of whether the character pattern is determined to be an internal character using the configuration shown in FIG. Outputs the character number turn from , and connects the output line (8
From 1), the corresponding character code for external characters can be output.

As described above, according to the present invention, external characters such as special characters and special symbols can be easily inputted without using a keyboard or the like.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a conventional device, FIG. 2 is a diagram showing an example of the form shown in FIG. 1, FIG. 3 is a diagram showing an example of the form according to the present invention, and FIG. FIG. 1 is a block diagram showing an embodiment of the invention. (1)...Form, (2)...Scanning unit, (5)...
Pattern memory, (6)... Recognition section, (7)... Recognition dictionary, (8o)... Output section, (9)... Character entry frame, measurement control symbol entry frame. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Shin Kuzuno −

Claims (1)

[Claims] A character input device for converting characters written on a recording medium such as a form into a code representing the characters and inputting the converted characters into a storage device, A means for writing a control symbol for a character in a position on a form corresponding to the character, and a means for matching a standard character pattern of the character and a character code representing the character for all characters within a predetermined range. a recognition dictionary that stores the information, a scanning section that scans the characters and control symbols on the form and converts them into electrical signals, and a preprocessing section that performs predetermined preprocessing on the output of the scanning section and converts it into two short signals. and a pattern memory that temporarily stores the output of this preprocessing section. Among the character patterns stored in this pattern memory, character patterns for which there is no corresponding control symbol pattern are identified as character patterns in the recognition dictionary. The corresponding standard character pattern is determined by comparing the similarity of A character characterized by comprising means for storing it as a character pattern in a predetermined address position in a storage device, and outputting an address signal indicating the storage position # as a character code for a non-standard character corresponding to the character. input device.