JPH04170688A - Electronic computer - Google Patents

Abstract

PURPOSE:To sharply improve a processing speed by reading out a comparing reference pattern information and selectively changing the information in accordance with the digit advance mode of an objective numeral/code. CONSTITUTION:This electronic computer is provided with a one-chip microcomputer 15, a liquid crystal display device (LCD) 2, a key switch group 16, a sensor 18, a sensor control circuit 17, an encoder 20, a timing circuit 19, a power supply unit 21 and so on. A numeral or a code is read out by manual scanning and the comparing reference pattern information of the objective numeral is selectively changed in accordance with the digit advance mode of the numeral to be computed. Consequently, the retrieval of useless reference pattern information can be omitted in coincidence comparing processing, so that the processing speed can be remarkably shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic computer that optically reads and identifies numbers and symbols and performs calculations based on the identified data.

[Prior Art] Conventionally, in the field of electronic computers equipped with manual scanning optical reading means, numbers and symbols are identified according to a regular predetermined format, as typified by barcode readers. It read the pattern, identified numbers and symbols, and performed calculations.

[Problem to be solved by the invention]

However, in the conventional example described above, in order for the electronic computer to identify and perform calculations, humans cannot immediately judge the numerical and symbol information (which is easy for the electronic computer to identify).
Because it was replaced with a specific pattern, it had the following drawbacks.

(1) It is troublesome to replace data with a regular and specific pattern according to a prescribed format.

(2) It is not possible to confirm whether the particular pattern is data desired by the operator before inputting it.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide an electronic computer that can directly identify ordinary character patterns without converting them into bar codes or the like.

[Means to solve the problem]

The electronic computer according to the present invention includes a manual scanning optical reading means for manually scanning an image to be read, and comparison reference pattern information for identifying numbers and symbols based on the pattern information read by the reading means. , means for selectively changing the base number mode of the numbers and symbols to be read.

[Function] According to the present invention, the manual scanning type number/symbol identification electronic computer relieves the operator of the troublesome manual operation of the key of the conventional key-operated type electronic computer, and furthermore, the conventional manual scanning type optical computer can be used. Instead of replacing the numbers and symbols with a specific pattern in advance like an electronic computer with a digital reading means, it reads numbers and symbols by manual scanning and compares reference pattern information of the numbers to be read according to the base mode of the numbers to be calculated. By providing a means for selectively changing the information, unnecessary reference pattern information is not searched in the minus number comparison process, so that the processing speed can be significantly reduced.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a schematic perspective view of an electronic computer according to an embodiment of the present invention. In this figure, 1 is a part of the sensor built into the main body, which is composed of a CCD, a rod lens array, an LED array, an encoder (all not shown), and the like. 2 is a liquid crystal display (LCD) that displays the identified data and the progress and results of calculations. 3 is the reading start/stop key, 4 is the addition key, 5 is the subtraction key, 6 is the multiplication key, 7
8 is the division key, 8 is the equal key to obtain the calculation result, 9 is the mode key to specify the base number, which is a feature of this embodiment, and IO
is the clear key to clear the calculation data and results, 11 is the power supply 0N10FF key, 12 is the decimal point position specification key, 1
Reference numeral 3 indicates a rounding/truncation instruction key, and 14 indicates a group of key switches for inputting numerical values when the identified calculation data differs from the data to be read.

FIG. 2 is a block diagram of the electronic computer shown in FIG. 1. In this figure, 15 is a one-chip microcomputer (
(hereinafter referred to as MPU), LCD 2° key switch group 16. Sensor 18. Sensor control circuit 17. Encoder 20. Controls the timing circuit 19. This MP
L115 is R for storing processing procedures described later and reference patterns for comparing and matching read patterns.
It includes an OM 15a, a work area for processing, and a RAM 15b used as a data buffer and memory. 17 is a sensor control circuit that amplifies and binarizes the output signal from the sensor 18 and interfaces with the MPU 15. Reference numeral 19 denotes a timing control circuit that controls the timing of capturing the sensor output based on the output signal of the encoder 20. 21 is a power supply unit that supplies power to each part.

FIG. 3 shows an example of the operation and display of the computer in binary mode. First, REA with fil
Turn on the D key. The display remains "O" and waits for input.

At C2, the binary number "101" which is the object to be read is read and scanned. When the READ key is turned off at β3, reading is completed, the read pattern is identified as binary data "101", transferred to the data register, "101" is displayed, and the state waits for the next input.

At C4, turn on the + key to instruct addition processing, and select 12.5.
At ~°C 7, the binary number "11" data is similarly read and "11" is displayed. At ρ8, the = key is pressed to execute the addition process, and the result is "1000", which is displayed and the process ends.

FIG. 4(A) is a flowchart showing a processing procedure after the ON key is manually operated, which is built in the ROM 15a of FIG. 2 and an example of which is shown in FIG.

First, in step S1, initialization processing such as flag setting, memory buffer clearing, and setting of input/output board initialization 1 interrupt processing is performed. In the next step S2, display processing is executed, and in step S3, input from the key switch group 16 is awaited. If there is key human power, each process of subroutines 34 to S13 corresponding to the key human power is executed.

In the execution of the 0N10FF key process in step S13, after the process is completed, the process branches to the 0N10FF key human power waiting process.

Here, FIG. 4(B) shows a detailed explanation of the subroutine executed when the READ key is pressed. First, in step S14, press the READ key again to 0N10FF.
If it remains in the ON state, proceed to step S15 and temporarily store a predetermined amount of the read pattern information.Determine whether the buffer provided in the RAM 15b is full or not. For example, in steps 316 and S17, sensor 1 is activated in synchronization with the timing of the encoder output signal.
Reads a row of patterns and transfers the data to the buffer.

When the READ key is turned off in step S14 and reading is completed, or when it is detected that the buffer is full in step S15, a display is displayed to warn the operator that the buffer is full in step 31g. When the process is executed, the process moves to the identification process from step 319 onwards.

In step S19, it is checked whether the pattern data to be identified exists in the buffer, and if it does exist, in step S20, the individual patterns accumulated in the buffer are first cut out, and pattern information is cut out one by one. process. In step S21, a process of extracting feature parameters of the extracted information is executed. The characteristic parameters include numerical values such as the length of the input pattern in each direction from the reference point, the direction, and the ratio of the lengths.

In steps 322 to S24, the base number specified by the mode key 9 is determined. If a binary number is determined in step S22, the final address of the ROM 15a where the reference feature parameters of each number are stored is set to nl(E) as reference pattern information as shown in FIG. 5 in step S25. If the octal number is determined in step S23, the final address is n7 (E
), and if the lO base number is determined in step S24, the final address is set to n9 (E) in step S27, otherwise it is assumed to be a hexadecimal number, and step 3
At step 28, the final address is set to nF(E).

In step S29, the characteristic parameters of the reading pattern extracted in step S21 and the ROM1S shown in FIG.
The reference feature parameters of each number as reference pattern information in a are sequentially compared. At this time, the area in the ROM 15a of the reference characteristic parameters to be compared is set to an address no (
s), but the end address is from steps S25 to 32g.
It is different for each base number state as set in .

When a numerical code with matching or closest parameter information is detected in the comparison process, step S30
is transferred to the data register. When it is determined in step S19 that there is no more pattern data in the buffer, the subroutine is exited in step S31 and the process returns to the main routine.

In the embodiments described so far, the starting address of the ROM area of the reference characteristic parameter is made the same as shown in Fig. 5, and the final address is changed according to the base number.
As shown in FIG. 6, all (may be provided in a separate area. In other words, it is sufficient if the reference feature parameters, which are the comparative reference pattern information, can be selectively changed by the base mode.

〔Effect of the invention〕

As explained above, according to the present invention, there is no need to replace the data to be calculated in advance with a specific pattern (for example, a barcode) when scanning the object to be read, so that the data to be input is the one desired by the operator. It is possible to check whether the data is correct before inputting it, freeing the operator from the hassle of conventional keystrokes.

Furthermore, according to the present invention, the reference pattern information of numbers and symbols to be compared is selectively changed according to the base number, so that, for example, when calculating binary numbers, the reference pattern information of numbers 3 or more is compared.・Eliminate wasteful searching,
The processing speed can be significantly improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of a computer to which the present invention is applied; FIG. 2 is a block diagram of the computer shown in FIG. 1; FIG. 3 is a diagram showing an example of operation and display; Figure 4 (A)
4(B) is a flowchart showing the processing procedure in this embodiment, FIG. 5 is a diagram showing reference pattern information in the ROM 15a, and FIG. 6 is a diagram showing another embodiment of the computer according to the present invention. It is. l...part of the sensor, 3...reading start/end key, 9...mode key, 14...numeric input key. (Ji71kurikahigashi1kamo) ll ~ 12~--+-0-1- 13 Pano 14 ~! 5 ~ 16 ~------------)-)-! 7~! 8 - 3rd (made by Beichi) (L shown) 1 figure 2 guide 8 way for 10th way I6 tiger 6 figure

Claims (1)

[Scope of Claims] 1) Manual scanning optical reading means for reading an image to be read by manual scanning, and comparison reference pattern information for identifying numbers and symbols based on the pattern information read by the reading means. , means for selectively changing the base mode of the numbers and symbols to be read. 2) In claim 1, the comparison reference pattern information is arranged continuously in the ROM, and no matter what base mode the numbers/symbols to be read are in, all the starting addresses are the same and the ending address is the same. selectively changes the decimal mode of the numbers to be read.