JPS62248081A - Character recognition method through memory medium - Google Patents

Abstract

PURPOSE:To simplify software for recognition and to reduce the number of mistakenly recognized characters by obtaining address information from a hand-written character and taking out character code information from a memory according to an address. CONSTITUTION:An input part 11 makes a character 20 showing the hand-written character A into bit map information. If is a binary information 31 of 8X8 bits. A conversion part 12 encodes the information 31 in hexadecimal by splitting it into right and left two parts and converts it into a bit map data 32. By arraying the data 32 in serial, the address 33 is obtained. It accesses the memory 13. The code information at a data storage part that the address 33 indicates corresponds to the input character 20. Some style of character provides a piece of bit information with respect to the same character information obtained by the bit map. They are made into the same code information (ASCII codes). Said ASCII codes are selected and the character A is displayed on a display 5 through a CPU 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a character recognition method using a storage medium that converts character information such as handwritten characters into code information.

2. Description of the Related Art In the conventional recognition method for handwritten characters, etc., a certain range of information read by an input unit 1 shown in FIG.
Convert to binary information group of 0 and 1 by 1, - Sono Sakura Pi
The code information is analyzed by a program 4 having an accord information conversion algorithm, and code information is obtained as a result and displayed on the display 5.

Problems to be Solved by the Invention However, in such a character recognition method, it is necessary to prepare a group of unrecognizable information or a group of handwritten information with different information depending on the conversion algorithm program. Furthermore, if an attempt was made to reduce the number of information groups, the program for this purpose would become enormous, and it would take a lot of time to obtain recognition results. This problem arises for the following reasons. Firstly, although there are many types of conversion algorithms, there is no algorithm that correctly and reliably converts handwritten characters into predetermined code information.

Second, the amount of programs required to reduce the number of information groups is enormous, and when other programs are executed in parallel, the usable main memory space is limited.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a character recognition method using a storage medium that can convert handwritten characters into code information without using a literary journal 1 knowledge algorithm. shall be.

Means for Solving the Problems In order to achieve the above object, the present invention considers a group of information such as handwritten characters as one address, and stores data obtained when accessing this address to a storage medium as the handwritten characters, etc. The code information for

Code information for handwritten characters is stored in advance in the working storage medium. The address of this code information has a value corresponding to a bit pattern of character information such as handwritten characters, and the storage medium is accessed using this address to obtain predetermined code information.

Embodiment FIG. 1 is a block diagram showing a character recognition device to which an embodiment of the present invention is applied.

This character recognition device includes an input section 11 that is composed of a CCD image scanner (not necessarily limited to this) that inputs a character 20 to be recognized, converts it into a bitmap, and outputs it as binary information; a conversion unit 12 that converts the binary information obtained by the conversion unit 12 into an address; and a memory 13 that is connected to the conversion unit 12 and stores in advance character-specified code information having an address corresponding to the address obtained by the conversion unit 12. and the memory 13 via the CPU 4.
, and a display 15 for displaying characters corresponding to the code information.

Note that character information such as alphabetic characters, numbers, kana, and kanji characters is previously converted into a bitmap by the input unit 11 and stored in the memory 13. In this case, code information corresponding to each character information is stored in the memory 13 for all fonts expressed within a bitmap range of 8×8 dots (not necessarily limited to this), which will be described later. At this time,
Depending on the font, a plurality of pieces of bit information are set for the same character information obtained from the bitmap, but all of these bits are the same code information (ASCII code is used in this embodiment).

A character recognition method using a storage medium applied to the character recognition device configured as above will be described.

As shown in FIG. 2(,), a handwritten character 20 indicating the character "A" is converted into bitmap information by the input unit 11. As shown in FIG. In this embodiment, this bitmap information is binary information 31 of 8 dots x 8 dots for one character (see FIG. 2).

This 8 dot x 8 dot binary information 31 is divided into two sides, left and right, each encoded in hexadecimal (not necessarily hexadecimal) and converted into bitmap data 32. Further, this bitmap data 32 is arranged in series to obtain an address 33.

This address 33 accesses the memory 13.

Code information 34 (see FIG. 3) located at the data storage location indicated by this address 33 corresponds to the input character 20. That is, in this embodiment, the ASCII code "'41H" for the character rAJ is stored in this location, the ASCII code "A1" is filled out, and the character rAJ is displayed on the display 5 via the CPU 14. .

Similarly, as shown in FIGS. 2(b) and 2(C), the input unit 11 converts the character rAJ, which has a different font from the example shown in FIG. 2(,), into a bitmap. In this case, Figure 2 (,
), the font is different, so the binary information 31, bitmap data 32, and address 33 are as shown in Figure 2 (
, ) have different values. However, when the memory 13 is accessed using this address 33, the ASCII code "41H" is selected as in the above example, and the characters rAJ are displayed on the display 5 via the CPU 14.

Character recognition is similarly performed for character information other than the above-mentioned character rAJ.

In addition, ASCII codes for all 8 x 8 dot bit patterns, error codes for cases that are not recognized as characters, codes for characters that cannot be recognized by bit patterns alone (for example, the number "1" and the lowercase letter rLJ, etc.) are included. By storing it in the memory 3, any handwritten characters can be recognized.

Effects of the Invention As is clear from the above explanation, the present invention utilizes memory, regards a group of handwritten character information as one address,
Since the information obtained by accessing this address to the storage medium is the code information of the handwritten character, the recognition software for handwritten characters can be simplified and the recognition errors of recognized characters can be reduced. .

[Brief explanation of drawings]

The first reason is as shown in FIG.
a), (b), and (C) are conceptual diagrams showing how a predetermined character is converted into binary information according to an embodiment of the present invention, and Fig. 3 is a conceptual diagram showing how character input information is converted into code information according to the same embodiment. FIG. 4 is a block diagram showing an apparatus to which an example of a conventional character recognition method is applied. 11...Input section, 12...Conversion section, 1
3...Memory, 14...cPU.

Claims (1)

[Claims] Predetermined character information is converted into a bit pattern, character-designated code information with this bit pattern as an address is stored in a storage medium, and the storage medium is accessed at the address to obtain the character-designated code information. A character recognition method using a storage medium characterized by: