JP2715431B2 - Command judgment method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a command determination method, and more particularly to a command determination method using a coordinate reading device of a CAD system.

[Conventional technology]

In a conventional command determination method of this type, for example, a host has a table for storing a maximum value and a minimum value of a rectangle and a command, and is associated with a specific rectangle of a coordinate reading device in one-to-one correspondence. A method of determining a command from the X and Y coordinate values read by a device (hereinafter referred to as a tablet), or a function box with a dedicated function box, and the function key command changes according to the processing, and the function key is pressed For example, a method of determining a command based on the command is known.

[Problems to be solved by the invention]

In the conventional command determination method described above, the processing screen (CR
T) The line of sight moves each time the menu on the tablet is picked up or the function key of the function box is pressed, so the processing time becomes longer, and it is necessary to search for the menu position of the tablet and the function key of the function box. There is a disadvantage that it takes time.

Further, there are drawbacks that it is difficult for a beginner to remember an operation procedure because of similar operations, and that operability is poor because continuous operations are difficult.

Furthermore, since the line of sight moves from the CRT to the tablet or the function box, there is also a disadvantage that the number of times of movement increases eyestrain and deteriorates visual acuity.

An object of the present invention is to provide a command determination method that shortens the operation time for searching for such function keys and the like, improves operability that even a beginner can easily remember, and eliminates eye fatigue and the like.

[Means for solving the problem]

A command determination method according to the present invention includes a coordinate data reading step of obtaining locus data by a coordinate data reading circuit by moving a coordinate indicator on a coordinate reading device; and a plurality of representatives for identifying a locus among the locus data. A selection step of selecting the X and Y coordinates of a point by a representative point selection circuit, and normalization of extracting a maximum value and a minimum value from the trajectory data and correcting the X and Y coordinates of the plurality of representative points by a normalization circuit Step and counting the number of strokes of the input of the locus data,
And the normalized X, Y coordinates of the plurality of representative points and the theoretical representative coordinate values stored in the memory circuit for each command symbol, for each of the command symbols of the same number of strokes among the command symbols, Calculating a distance from the theoretical coordinate value for each of the plurality of representative points, calculating the sum of these distances, and selecting a minimum command symbol of the sum of the distances of the representative points into an array circuit and selecting a minimum value. A minimum value selection step of selecting using a circuit, and a comparison detection circuit for determining whether or not the minimum value of the sum of the distances selected by the minimum value selection switch is within an allowable range determined for each of the command symbols in the memory circuit. And determining whether or not the trajectory data obtained by moving the coordinate indicator represents a command.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a coordinate value reading device for explaining one embodiment of the present invention.

As shown in FIG. 1, a coordinate reading device as such a standard value reading device inputs a signal from a pen input terminal, that is, a locus data, and outputs a plurality of points (for example, 50 to 60 points).
A coordinate data reading circuit 1 for reading X and Y coordinates and brush count (line number) data and identifying the maximum and minimum values of the X and Y coordinates of the plurality of points; [Here, a representative point selection circuit 2 for selecting 7 points = 7 coordinates for one command symbol (symbol)] and the maximum value and minimum value coordinates identified by the coordinate data reading circuit 1 described above are included. , Multiple representative points (7
For each command symbol, for example, "N", "Z" (both are examples of one line) character-like symbols, etc., respectively. The memory circuit 4 defines the coordinates of the seven representative points, the number of strokes, and the tolerance), and the two values of the representative point normalized by the above-described normalization circuit 3 and the theoretical value stored in the memory circuit 4 respectively. An arithmetic circuit 5 for calculating the sum of the distances between points (referred to as a sum of distances); an array circuit 6 for arranging the calculated sum of distances for a plurality of commands with the same number of strokes; And a minimum value selection circuit 7 for selecting a command symbol that minimizes the sum of the distances, and a theoretical value defined in the memory circuit 4 as to whether the error is within an allowable value for the command symbol that minimizes the distance. Comparative inspection to compare and identify The circuit 8, the comparison detection circuit 8
And a CRT display circuit 9 for displaying the output of the command, that is, the output of whether or not the command is recognized as a command, for easily and easily determining the command symbol input from the pen input terminal as an accurate command. Can be.

Note that the theoretical value to be compared with the output of the minimum value selection circuit 7 by the comparison detection circuit 8, that is, one command, may be such that the theoretical value of the first command arranged by the arrangement circuit 6 is output from the memory circuit 4. Alternatively, a theoretical value of a command corresponding to the output of the minimum value selection circuit 7 may be output. As a result, for example, even when the input operator inputs a command such as “one” as “to”, the reading device can accurately determine the command and recognize the command as “one”.

Next, FIG. 2 is a flowchart for explaining the procedure of command determination in the present invention.

As shown in FIG. 2, in the determination of such a command, first, in step S1, the coordinate data reading circuit 1 reads the coordinates of a plurality of points from the tablet data input by the operator. that time,
In the reading circuit 1, for the input command symbol, the maximum value and the minimum value of the specified plurality of X coordinates and Y coordinates, and the number of brushes indicating the number of writings of the command symbol, that is, the number of lines, Is identified.

Next, at step S2, the representative point selection circuit 2 takes out the representative points (seven points). If the number of identified lines is larger than seven, the process returns to step S1 to read the tablet data again. When the number of lines is less than 7, the representative point 7 coordinates are selected for the entire command symbol. The representative point selection circuit 2 obtains a line length for each line, and determines the number of representative selection coordinates of each line in proportion to the line length.
Representative coordinates X and Y at equal intervals are sequentially determined from the number of representative coordinates selected from each line, and finally seven coordinates are determined.

In the following, in order to simplify the concept of command determination, 1
The command of the line will be described, and the description will be made assuming that seven representative points are selected per line.

Next, in step S3, the X and Y coordinates including the maximum value and the minimum value of the X coordinate and the Y coordinate identified in step S1, respectively, are used to correct the X and Y so that the command symbol becomes a square. Is normalized by a normalization circuit 3.

Next, in step S4, the arithmetic circuit 5 receives a theoretical value from the memory circuit 4 and performs arithmetic processing. That is, for the same number of strokes (the number of lines) and all commands stored in the memory circuit 4, the theoretical coordinate values of the representative 7 points of each command symbol and the 7 representative points normalized by the normalization circuit 3. The distance between the two points is determined, and the sum of the distances is calculated by the arithmetic circuit 5.
It is calculated by: As a result, in step S4, data of the sum of distances equal to the number of commands with the same number of brushes is obtained.

Next, in step S5, the data of the sum of the distances corresponding to the calculated number of commands is arranged by the arrangement circuit 6 in ascending or descending order.

Next, in step S6, it is determined whether or not all the sums of distances from the defined data from the memory circuit 4 have been obtained.
It is determined whether or not the processing in steps S4 and S5 has been performed. If the processing has not been performed, the processing in steps S4 and S5 is performed.

Next, in step S7, prior to selecting a value that minimizes the error (deviation), the minimum value is selected from the sum of distance data taken into the array circuit 6 in step S5.
Select by. That is, at this stage, the command data input by the pen is compared with a plurality of correct commands having the same number of strokes, and the command considered to be the closest and the data with the minimum distance sum are output.

Next, in step S8, for one command selected in step S7, reference is made to the value of the permissible range described in the memory circuit 4 to determine whether the sum of the distances selected for one is within the permissible value. Is determined by the comparison detection circuit 8. The output of the comparison detection circuit 8 is displayed on the CRT display circuit 9 as described above. If the data to be compared is within the allowable value, the command read from the memory circuit 4 is output. Otherwise, the process returns to step S1 to repeat the command symbol determination operation.

〔The invention's effect〕

As described above, the command determination method of the present invention
By symbolizing and normalizing the command, there is an effect that the operation time of the command input can be reduced. Also, since the oplator can be concentrated on the CRT only, the operation efficiency can be improved, and even a beginner can easily operate. Furthermore, the operator can move the line of sight only a little, so that there is also an effect that the eyes are less tired and a decrease in visual acuity can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram of a coordinate value reading device for explaining an embodiment of the present invention, and FIG. 2 is a flowchart for explaining a command determination procedure in the present invention. 1 ... Coordinate data reading circuit, 2 ... Representative point selection circuit, 3
…… Normalization circuit, 4 …… Memory circuit, 5 …… Operation circuit,
6 ... arrangement circuit, 7 ... minimum value selection circuit, 8 ... comparison detection circuit, 9 ... CRT display circuit.

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical indication location H03M 11/22

Claims (1)

(57) [Claims] 1. A coordinate data reading step for obtaining trajectory data by a coordinate data reading circuit by moving a coordinate indicator on a coordinate reading device; and X of a plurality of representative points for identifying a trajectory in the trajectory data. , Y coordinate by a representative point selecting circuit, a normalizing step of extracting a maximum value and a minimum value from the trajectory data, and correcting the X, Y coordinates of the plurality of representative points by a normalizing circuit; The number of strokes of the input of the trajectory data is counted, and the normalized X and Y coordinates of the plurality of representative points and the theoretical representative coordinate values stored in the memory circuit for each command symbol are used for the command symbol. Calculating, for each of the command symbols having the same number of brushes, a distance from the theoretical coordinate value for each of the plurality of representative points, calculating an sum of the distances, and calculating the sum of the distances of the representative points. A minimum value selecting step for selecting a minimum command symbol using an array circuit and a minimum value selecting circuit; and a minimum value of the sum of the distances selected in the minimum value selecting step is determined for each command symbol in the memory circuit. A determination step of using a comparison detection circuit to determine whether or not the trajectory data is within a determined allowable range, and identifies whether or not the trajectory data obtained by moving the coordinate indicator indicates a command. A method for determining a command, characterized in that: