JPH01239617A - Character frame position storage circuit - Google Patents

Abstract

PURPOSE:To prevent a character frame boundary value from being used in an abnormal state by deciding whether or not abnormality is generated in the character frame boundary value stored in a character frame boundary value storage part from character frame width calculated based on the content of the character frame boundary value storage part, and issuing an alarm. CONSTITUTION:X character frame width set as decision criterion is calculated at an X character frame width calculation part 110 based on the content of an X character frame boundary value storage part 100. Also, Y character frame width set as the decision criterion is calculated at a Y character frame width calculation part 210 based on the content of a Y character frame boundary value storage part 200. At an X character frame boundary value decision part 130 and a Y character frame boundary value decision part 230, it is decided whether or not the abnormality is generated in the X character and the Y character frame boundary values stored in the storage parts 100 and 200 based on the output of the calculation parts 110 and 210, respectively. An alarm part 300 informs the abnormality when it is decided that the abnormality exists in a decision result. It is possible to perform the re-setting of the character frame boundary value according to the information of the alarm, and to prevent the character frame boundary value from being used in the abnormal state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is utilized in a character frame position storage circuit of a character recognition device that recognizes input characters based on their handwriting.

〔overview〕

In the character frame position storage circuit of the present invention, a character frame width is calculated as a determination criterion based on the contents of a character frame boundary value storage section, and the character frame width is stored in the character frame boundary value storage section based on this character frame width. This prevents the character frame boundary value from being used in an abnormal state by determining whether the character frame boundary has changed and issuing a warning if it has changed.

[Conventional technology]

FIG. 5 is a diagram showing character frames of the character frame position storage circuit.

Conventionally, character recognition devices find the position of the currently written character frame and use that position to cut out each character. This determination of the position of the character frame is performed based on a character frame position storage circuit including a character frame boundary value storage section that stores in advance the boundary values of each character frame arranged on the writing surface.

Determination of the position of the character frame will be explained in detail using FIG. 5.

Figure 5 shows character frames placed on the writing surface, x0, x
l, ×2, ×3, ×4 are the X character frame boundary values indicating the boundaries between each character frame in the X direction, and similarly, yOlyl, y2, y
3 is a Y character frame boundary value indicating the boundary between each character frame in the X direction. This X character frame boundary value is stored in X (i) of the X character frame boundary value storage unit corresponding to the character frame position i, as follows: X(0)=XO1X(1)=X1, - Similarly, the Y character frame boundary value is Y (0) = yO, Y (1) = yl, - in the Y character frame boundary value storage unit corresponding to the character frame position j. j).

However, 1-〇, 1.2, ・, ■, j=0.1.210, Jl 1 is the number of character frames in the X direction, and j is the number of character frames in the X direction. Time series data P with coordinates
When, P= ((Xp, Yp), p=0.1.2, ・・
)(1).

Here, the point P = (Xp 5Yp) to be written is X(i)≦Xp
<X(i + 1) ・(2)Y(j
)≦Yp< Y(j + 1) (
When satisfying 3), point P is assumed to be within the character frame of row 1 and column j.

In the manner described above, the position of the character frame in which characters are currently written can be determined.

[Literature]

(IEICE Technical Research Report EC8l-2Or Application to Japanese Word Processor) Kodaka, Wakahara, Hashimoto [Problems to be Solved by the Invention] However, in such conventional character frame position memory circuits, character frame boundaries A rewritable memory whose values are held by a battery is often used as the value storage section, and there is a possibility that the memory contents may be rewritten due to an accident or the like.

For this reason, when an abnormality occurs in the character frame boundary value, there is no means to detect it and notify the scribe, so there is a drawback that characters are cut out in an abnormal state.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks, and an object of the present invention is to provide a character frame position storage circuit that can prevent character frame boundary values from being used in an abnormal state.

[Means for solving problems]

The present invention provides a character frame position storage circuit that includes a character frame boundary value storage section that stores in advance character frame boundary values of a plurality of character frames arranged on a writing surface. There is no abnormality in the character frame boundary value stored in the character frame boundary value storage unit based on the output of the character frame width calculation unit that calculates the character frame width as a determination standard based on the character frame width calculation unit. The present invention is characterized in that it includes a character frame boundary value determination section that determines whether the character frame boundary value determination section is correct, and an alarm section that notifies an abnormality based on the determination result of the character frame boundary value determination section.

The character frame boundaries can be set separately in the X direction and in the X direction.

[Effect]

Based on the contents of the character frame boundary value storage unit, a character frame width calculation unit calculates a character frame width to be used as a determination criterion. The character frame boundary value determination section determines whether there is any abnormality in the character frame boundary value stored in the character frame boundary value storage section based on the output of the character frame width calculation section. The alarm unit notifies the user of the abnormality when the determination result of the character frame boundary value determination unit indicates that there is an abnormality. The character frame boundary value can be reset according to this abnormality notification. The above operations can prevent character frame boundary values from being used in an abnormal state.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a character frame position storage circuit according to an embodiment of the present invention. In FIG. 1, the character frame position storage circuit serves as a character frame boundary value storage section that stores in advance the X character frame boundary values and the Y character frame boundary values of a plurality of character frames arranged on the writing surface. It includes a frame boundary storage section 100 and a Y character frame boundary value 1:α section 200.

Here, the feature of the present invention is that the character frame width calculation means that calculates the X character width and the Y character width based on the contents of the The frame width calculation unit 110, the Y character frame width calculation unit 210, the X character frame width calculation unit 110, and the Y
MX that stores each output of the character frame width calculation unit 210
The X character frame boundary value and the Y character frame stored in the X character frame boundary value storage unit 100 and the Y character frame boundary value storage unit 200 based on the contents of the register 120 and the My register 220 and the Mx register 120 and the MY register 220. The X character frame boundary value determination unit 130 and the Y character frame boundary value determination unit 230 serve as character frame boundary value determination units that determine whether there is any abnormality in the boundary value, and the X character frame boundary value determination unit 130 and Y
An alarm unit 30 outputs an alarm ALM that indicates an abnormality based on the control signals AX and Ay of the character frame boundary value determination unit 230.
0.

The principle of the character frame position storage circuit having such a configuration will be explained.

First, in a character recognition device, character frames are generally arranged in the X direction or at equal intervals in the X direction, and in the character frame position storage circuit, all stored character frame boundary values are It is rare for the difference to break down to a constant value. In the present invention, this property is used to check for abnormalities in the character frame boundary value storage section and issue a warning. This method will be explained in detail below with reference to FIG. 1.

As in the past, the character frame boundary values of the character frames placed on the writing surface are X(1), (i=0.1) in the X character frame boundary value storage unit 100 and the Y character frame boundary value storage unit 200. .2, , ■), Y(j),
(j=0.1.2, ., J).

This character frame is arranged at equal intervals in the X direction and the
i)-X(i-1)= ,=X(I)-X(I-1)-(4)Y(1)-
Y(0)=Y(2)-Y(1)=・=Y(j)-Y(
j −1)==Y(J)−Y(J−1)−(5) holds true.

Using this, the X character frame boundary value storage unit 100 and the Y
It is checked whether there is any abnormality in the character frame boundary value storage unit 200 as follows.

First, the character frame width MX in the X direction is set as Mx=X(1)-x(0) (6).

If there is no abnormality in the X character frame boundary value storage unit 100,
Equation (4) holds true for all character frames in the X direction.

Here, if there is a character frame for which X(i) −X(i −1>=Mx (i=2.3,...,■)・(7) does not hold, then Assume that there is an abnormality in the unit 100.

Similarly, in the X direction, the character frame width My is set as My=Y(1
)-Y(0)-(8), and the character frame where Y(j)-Y(j-4)=My (j=2.3,..., J)...(9) does not hold. If there is, it is assumed that there is an abnormality in the Y character frame boundary value storage unit 200.

As described above, abnormalities in the X character frame boundary value storage section 100 and the Y character frame boundary value storage section 200 can be checked and a warning can be given to the scribe.

FIG. 5 is a diagram showing character frames in which there are spaces between character frames in the character frame position storage circuit. Although the principle of the present invention has been explained above, even if there is a gap between the character frames of the character frames arranged on the writing surface as shown in FIG. The present invention can be applied by using a frame boundary.

Furthermore, even when character frames of different sizes coexist, the present invention can be similarly applied by providing a character frame boundary value storage section for each group of character frames of the same size.

The operation of such a character frame storage circuit will be explained.

FIG. 2 is a flowchart showing the operation of the X character frame width calculation section of the character frame storage circuit of the present invention. FIG. 3 is a flowchart showing the operation of the Y character frame boundary value determining section of the character frame storage circuit of the present invention.

In FIG. 1, the X character frame width calculation unit 11 uses the X character frame boundary value input from the X character frame boundary value storage unit 100.
0, the X character frame width is calculated and the MX register 120
is set to The X character frame boundary value determination unit 130 reads the X character frame boundary value from the X character frame boundary value storage unit 100 to determine the width of each character frame in the X direction, and calculates the width of each character frame and M × The contents of the register 120 are compared, and if they all match, the control signal Ax is set to "0", and if they do not match, the control signal AX is set to "1" and sent to the alarm unit 300. The same goes for the character frame in the y direction. and the control signal Ay
is "0" or the control signal Ay is "1" and the alarm unit 30
Send to 0. In the alarm unit 300, the control signals Ax and Ay are “
1”, an alarm ALM is issued.

Furthermore, a detailed explanation of each part will be given below.

Regarding the X character frame boundary value storage unit 100 and the Y character frame boundary value storage unit 200, as described in the related art, the X character frame boundary value and the Y character frame boundary value correspond to character frame positions 1 and j. Stored as a one-dimensional array.

The operation of the X character frame width calculation unit 110 is shown in the flowchart shown in FIG. That is, the X character frame boundary value storage unit 10
From 0, write X(1) to variable P and x(0) to variable Q. The value of variable Q is subtracted from the value of variable P and set as variable M. Set the value of variable M to the X character frame width and write it to the MX register.

The next operation of the X character frame boundary value determination unit 130 is shown in the flowchart shown in FIG. Write the contents of the Mx register to variable R. Set the initial value of the character frame position l to 2.

When 1≦I, write X(1) to variable S and X(i-1) to variable T from the X character frame boundary value storage unit 100, subtract the value of variable T from the value of variable S, and create a character frame. and the value of the variable R, which is the content of the MX register 120, as shown in equation (7).
If this does not hold true, the control signal AX is set to "1". If formula (7) holds true, "1" is added to i and the above process is repeated.

When i>1, the formula (
7) is established, and the control signal is set to "0".

Regarding the Y character frame width calculation unit 210, the X character frame width calculation unit 1
10, and the Y character frame boundary value determination unit 230 is the same as the X character frame boundary value determination unit 130, so a description thereof will be omitted.

〔Effect of the invention〕

As explained above, the present invention has an excellent effect of preventing use in a state where the character frame boundary value is abnormal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a character frame position storage circuit according to an embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the X character frame width calculation section of the character frame position storage circuit of the present invention. FIG. 3 is a flowchart showing the operation of the X character frame boundary value determining section of the character frame position storage circuit of the present invention. FIG. 4 is a diagram showing character frames of a character frame position storage circuit. FIG. 5 is a diagram showing character frames with spaces between character frames in a character frame position storage circuit. 100...X character frame boundary value storage unit, 110...X character frame width calculation unit, 120...MX register, 130.
...X character frame boundary value determination unit, 200...Y character frame boundary value storage unit, 210...Y character frame width calculation unit, 220...
・MY register, 230...Y character frame boundary value determination unit,
300... Alarm unit, Ax, Ay... Control signal, AL
M...Warning, P...Point to be written down, ×0 to ×4...
-X character frame boundary value, yO-y3...Y character frame boundary value.

Claims (1)

[Scope of Claims] 1. In a character frame position storage circuit including a character frame boundary value storage unit that stores in advance character frame boundary values of a plurality of character frames arranged on a writing surface, the character frame boundary values A character frame width calculation unit that calculates a character frame width as a determination criterion based on the contents of the storage unit, and a character frame boundary value stored in the character frame boundary value storage unit based on the output of this character frame width calculation unit. 1. A character frame position storage circuit comprising: a character frame boundary value determination unit that determines whether there is an abnormality in the character frame boundary value determination unit; and an alarm unit that notifies an abnormality based on a determination result of the character frame boundary value determination unit.