JPH02137052A - Electronic computer for graphic art proportional calculation - Google Patents

Abstract

PURPOSE: To make a computer perform the calculations of the reduction and magnification ratios of graphic art material for reproduction by calculating the reduction and magnification ratios from the width or height of the original of a picture and the width or the height of a desired reproduced object by a decimal displaying method and a fraction displaying method. CONSTITUTION: An electronic computer for graphic art proportional calculation is provided with a mode display 22, a mode selection key 42, a numeric keyboard 18, display cells 48, 50 displaying the widths and heights of originals to be reproduced, display cells 52, 54 displaying the widths and heights of reproduced objects, a power cell 68, a decimal display 44, a fraction display 46, an enter key 60, a constant key 62 and a display cell clear key 64. The constitution part of the computer is stored in a casing 16. By the computer made in this way, the calculations of the reduction and magnification ratios of graphic art material for reproduction can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to hand-held dimensional proportional calculators, and more particularly to hand-held electronic calculators for use in graphic art proportional calculations.

[Conventional technology]

An important task for the graphic arts profession is the scaling up or down of graphic materials to fit into a defined renewable space. Those skilled in the art will appreciate that the present invention is directed to use in electronically determining the appropriate proportional size of any piece of reproducible graphic art. For simplicity of explanation, photographs will be used hereafter as an example, but it is not limited thereto.

Currently, graphics professionals utilize hand-held manual wheels to obtain the reduction or enlargement required by the photograph, and then rely on conventional electronic calculators to perform the calculations. Traditional graphic arts proportional wheels are inaccurate, difficult to read, and difficult to interpolate. Although handheld electronic calculators have been specifically designed for specific purposes in other fields, graphics professionals still rely on manual methods in the absence of electronic proportional calculators to calculate the required reduction or The magnification rate was determined almost on time.

Traditional hand-held electronic calculators for measurement input or output were replaced by the invention of electronic digital scales and calculators with memory.
U.S. Patent No. 4,181,959 issued to Tateishi Iwao on January 1, 1980, and U.S. Patent No. 4,181,959 issued to Tateishi Iwao and Nobuyasu Kakutani on January 1, 1980 for invention of electronic digital scale and calculator. No. 4,181
No. 4,195.34, issued to Nobuyasukakutani on March 25, 1980, for the invention of a calculator with an electronic digital scale and selectable programs.
No. 8, and U.S. Pat.
No. 488,250. Conventional hand-held calculators devised for calculation purposes rather than for other measurements include U.S. Pat. No. 486,849, 1 for invention of shopper counter
No. 4,446.528, issued May 1, 1984 to Robert Marmon.

These exemplary conventional electronic calculators are either impossible or extremely cumbersome to use for scaling and scaling measurements in the graphic arts industry.

For example, when faced with the task of photo reproduction, graphics professionals begin by determining the original production and the space in which the original production will be inserted into the reproduction copy. That is, in determining the degree of reduction or enlargement, the expert knows the height and width dimensions of the original and also knows the height and width limitations of the reproduction imposed by the location where reproduction is requested.

In order to make a proper determination of the size of the reproduction, the expert must know at least three of these four values; Various entries.

Calculation and display can be done in decimal and fractional values, and the required reduction and enlargement ratios based on three different entries of the four height and width values and the entry of different values of the height and width values. It was my long-cherished wish to obtain a calculator that could automatically calculate .

Those skilled in the art will appreciate that the prior art does not include electronic calculators that can be readily used in handheld calculators, particularly graphic arts proportional calculators.

[Problem to be solved by the invention]

Accordingly, it is an object of the present invention to provide a handheld electronic calculator capable of calculating the reduction and enlargement factors of graphic arts materials for reproduction.

It is also an object of the present invention to provide a handheld electronic calculator capable of displaying the height and height of the original, the width and height of the reproduction, and the reduction and enlargement ratios required for reproduction.

Another object of the present invention is to calculate reduction and enlargement factors, and
The idea is to have a hand-held electronic calculator that can operate using constants and variables.

A further object of the present invention is to provide a handheld electronic calculator capable of performing conventional calculations and graphic arts proportional calculations.

[Means to solve the problem]

According to the present invention, a mode selection means, a numerical keyboard, a keyboard display, a reduction ratio display,
An electronic calculator for graphic arts proportion calculations is provided which includes a power cell and four display cells consisting of decimal and fractional displays, an enter key, a constant key and a display cell clear key. The components of the calculator are housed in a rigid, rectangular casing. Power for the calculator is provided by a power cell.

[Effect]

The reduction ratio is calculated from the original width or height of the photograph and the width or height of the desired reproduction using the decimal and fractional methods.

〔Example〕

With reference to the accompanying figures, with particular reference to FIG.

A calculator 10 is shown which is used to calculate the reduction or enlargement factor of the photograph. The calculator 10 has a schematic keyboard 12
, a number of display cells 48, 50, 52 and 54, a power source 6
8 and a casing 16.

The keyboard 12 generally includes a numeric keyboard 18 having a number of numeric keys from 0 to 9 and a decimal point, a mode display 22, and a fraction keyboard 24 having a number of fraction keys in increments of 1/16.

It consists of a first entry display 26, a first entry display cancel key 28, a percentage display section 30, and an all clear key 32. The first entry display 26 further includes a decimal display 44 and a fraction display 46 that displays the numerator and denominator of a fraction in an integrated display or separate display sections, and also includes addition, subtraction, multiplication, and division as a modification of the present invention. and LL=lj function keys. Those skilled in the art will appreciate that each of the aforementioned display portions may comprise conventional display means including, but not limited to, a liquid crystal display or a light emitting diode.

In a preferred embodiment of the mode display 22.

Proportional calculator fractional mode 34, proportional calculator decimal mode 36
, a calculator fractional mode 38 , and a calculator decimal mode 40 .

Each mode is selected by operating a mode selection key 42 operatively connected to each mode status display.

Proportional Calculator Fractional Mode 34 allows the operator to operate in fractions of a fraction when calculating the reduction or enlargement factor of a photograph. Proportion Calculator Fractional Mode 36 allows the operator to operate in fractions when calculating the reduction ratio of a photograph. Calculator fraction mode 38 and calculator decimal mode 40 allow the operator to operate in fractions and decimals, respectively, when using function keyboard 20.

A variation of the mode display 22 includes a mode selection key 42 that operates on one of the proportional decimal or proportional fraction mode displays.

The function of the first entry display cancel key 28 is to cancel the numbers displayed on the first entry display 26 and reset the first entry display 26 to zero.

The function of the all clear key 32 is to clear all displays on the calculator 10 except when the constant key 62 is pressed.

The plurality of display cells 14 generally include a display cell 48 for displaying the width of the original to be reproduced, a display cell 50 for displaying the height of the original, a display cell 52 for displaying the width of the reproduction, and a display cell 52 for displaying the width of the reproduction. 0 display cell 48° display cell 501 display cell 52 and display cell 54 are composed of display cell 54 that displays the height of enter function key 60, enter constant key 62 and display cell clear key 6
4, each display cell further includes a decimal display 56 and a fraction display 58.

When pressed, the enter key 60 retrieves the value registered on the keyboard 26 and inputs that value into either the decimal display 56 or the fraction display 58, depending on whether the user has selected a decimal or a fraction. The display clear key 64 clears the decimal display 5 in the corresponding display cell.
6 and fraction display 58 to zero.

Constant key 62 is configured to calculate an enlargement or reduction ratio for a constant dimension of the original or reproduction. When the constant key 62 of the display cell 50 is pressed,
The values displayed in the decimal display 56 and fraction display 58 for that display cell are cleared only by the corresponding display clear function keys 64. Even if you press the all clear key 32, if the constant key 62 in a specific display cell is activated,
Decimal display 56 and fraction display 58 are not reset to zero.

A preferred embodiment of the power source includes a conventional solar cell. The function of power source 68 is to provide operating power to electronic handheld calculator 10 . However, suitable AC
Alternatively, DC' can be used as a source.

[Operation of preferred embodiment]

Referring to FIG. 2, a schematic flow of the operation of the calculator 10 is shown. Fractional memory 110 stores the values of numeric keyboard 18 and fractional memory stores the values of fractional key nodes 24. When activating proportional calculator decimal mode 36 or calculator decimal mode 40, the calculator only accepts values from decimal memory 110. When proportional calculator fractional mode 34 or calculator fractional mode 38 is activated, the calculator accepts values from both fractional memory 110 and fractional memory 112.

When the proportional calculator decimal mode 36 is activated or when the proportional calculator fractional mode 34 is activated, the reduction or expansion factor path 1
14 is activated. The reduction or enlargement factor path 114 calculates the reduction or enlargement factor of the photograph from the display cells 52 and 48 or the values entered into the display cells by the following steps.

1) Numerical keyboard 18 and fractional keyboard 24,
Alternatively, the value (1) can be entered on the keyboard display 26 using only the numeric keyboard 18.

2) Press the enter key 60 or the constant key 62 of the display cell in which the value (1) is to be input, and enter the value (1) from the keyboard 26 into the display cell (for example, the display cell 48 with the original width).

3) The value (1) is displayed on the decimal display and the fractional display and stored in the display cell memory 116 of the corresponding display cell.

4) If the value (1) is incorrect or needs to be changed, the decimal display 56, fraction display and display cell memory 116 are reset to zero with the display cell clear key 64 and the new value is transferred to the keyboard display 2.
Enter from 6.

5) Enter the value (2) into the keyboard display 26 using the numerical keyboard 18 and the function keyboard 24, and then input the value (2) into the - display cell corresponding to the display cell (for example, the display cell 52 for the width of the reproduction). Enter key 6
0 or constant key 62.

6) Display value (2) on decimal display 56 and fraction display 58 and store in display cell memory 116 of each display cell.

7) Clear value (2) from decimal display 56, fraction display 58, and display cell memory 116 using display cell clear key 64, and enter the new value from keyboard 26.
Incorporate from.

8) A central processing unit (CPU) 118, such as a C0MS microprocessor, automatically retrieves value (1) and value (2) stored in display cell memory 116 and calculates the reduction (%) required by the formula: red) or the magnification factor.

The dimensions of the reproduction and the dimensions of the original depend on the known height and width. For example, if the width of the original and the width of the reproduction are known, the reduction or enlargement ratio is calculated by the formula: %r e
It is expressed as d=(Wt/Wz)×100. Where the original height and the reproduction height are known, the reduction or enlargement factor is calculated by the formula: %red=(h,/h,)×100
Te is expressed. Here, hl and W□ represent the height and width values of the original work, and h2 and W2 represent the height and width of the reproduced work.

9) The reduction ratio is stored in the reduction ratio display 3o.

In operation, CPU 118 scans input from numeric keyboard 18, fractional keyboard 24, mode keyboard 22, and display cell keys to determine the state of each key. When any key is pressed, the CPU moves that information to the appropriate entry register.

Perform calculation operations on registers, including the use of conventional fractional memory 110 and fractional memory 112, and display the appropriate information conveyed by the keys to the corresponding display.

The CPU 118 calculates the reduction or enlargement ratio for multiple width values or multiple height values, but does not calculate the reduction ratio if there is only one width value and one height value. is the value (1) input in the display cell 52 and the display cell 48
It is calculated from the value (2) input in the display cell 52.
The value entered in (1) and the value entered in display cell 50 (
From 2), the reduction ratio is not calculated unless other values are input to the display 14. If there is a value (1) input to the display cell 52, a value (2) input to the display cell 48, and another value (3) input to either the 1 display cell 54 or the display cell 50, the CPU 118 calculates the reduction rate or enlargement rate from the value input to the display cell 52 or display cell 48, calculates the missing value (4), and inserts the value (4) into the display cell 54 or display cell 50 at the beginning. Display on the side that is not entered. Similarly, the CPU 118 has the value (1
) and (2) are entered into both display cell 50 and display cell 54, and when value (3) is entered into display cell 52 or display cell 48, the missing value (4) is calculated.

When calculator decimal mode 40 or calculator fraction mode 38 is activated, calculation path 120 is activated.

Calculator 10 operates like a conventional numerical calculator by the following steps.

1) A value is entered on the keyboard display 26 using the numeric keyboard 18 and the fractional keyboard 24, or only the numeric keyboard 18.

2) The operator selects the appropriate function from the function keyboard 20.

3) Press the appropriate value and function consecutively.

4) Press the equal key on the function keyboard 20 to finish the calculation, calculate the answer using the CPU 18, and display the answer on the keyboard display 26.

According to a variant of the invention, in order to activate the scaling factor path 114 or the calculation path 120, the operator does not need to activate a particular mode of the mode keyboard 22; Path 120 allows values from keyboard display 26 to be routed to display cell 48 and display cell 52.
or when an input is made to the display cell 54 and the display cell 50. In this way, calculator path 12
0 operates continuously. The mode key 42 allows the operator to change from calculation using only decimal numbers to calculation using both decimal numbers and fractions, and back to calculation using only decimal numbers.

Although the invention has been illustrated with reference to preferred embodiments, those skilled in the art will recognize that changes may be made in form and detail without departing from the spirit or scope of the invention. be.

〔Effect of the invention〕

With the hand-held calculator of the present invention, in the graphic arts field, reduction and enlargement of graphic art materials for reproduction can be easily obtained, increasing work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a top view of the graphic art proportional adjustment calculator according to the present invention, and FIG. 2 is a schematic flowchart of the operating steps of the electronic calculator for graphic art proportional calculation according to the present invention. 10... Calculator, 16... Casing, 18...
Numeric keys, 22...Mode display, 24...
Fraction key, 48, 50, 52, 54...display cell, 6
8...Power source.

Claims (1)

[Claims] 1. A housing containing a numeric key, a fraction key, and a calculation means operatively connected to the numeric key and the fraction key to perform a number of calculations based on the pressed numeric key and the fraction key. a plurality of displays operatively connected to each of the numeric keys and fractional keys and a calculating means to display numbers; a plurality of display function keys operatively connected to each of the plurality of displays; and a proportional calculation decimal mode and mode selection means for selecting one of the proportional calculation fractional modes; and power supply means for providing electric power to the calculator; at least one of the plurality of displays includes a rate display means for displaying a percentage, and at least one of the plurality of displays includes a keyboard entry display operatively connected to the numeric keys and the fraction keys, and the multiple display function keys include at least one of an enter function key, an enter constant key, a display clear key, and an all clear key. A portable hand-held electronic calculator that performs proportional calculations in decimal and fractional numbers for reduction and enlargement. 2. Claim 1, wherein the fraction key is incremented by 1/16.
The electronic calculator mentioned. 3. The electronic calculator according to claim 1, wherein said calculating means includes a microprocessor with low power consumption. 4. The microprocessor with low power consumption is a CMO
4. The electronic calculator of claim 3, comprising an S microprocessor. 5. The plurality of displays includes a first entry display having a decimal value display and a fractional value display, and the first entry display is operatively connected to the numeric entry key, the fractional entry key, the function key, and the mode selection means. receiving an input, the plurality of displays further having a plurality of second display cells, the second display cells further having a decimal value display, a fractional value display, a display cell enter key, a display cell constant key, and a display cell clear key. 2. The electronic calculator of claim 1, wherein said multiple displays include a calculation rate display in operative communication with said calculation means for displaying calculated reduction and enlargement factors. 6. The electronic calculator of claim 1, wherein said housing further includes a number of mathematical function keys including addition, subtraction, multiplication, and division keys. 7. The electronic calculator according to claim 6, wherein said mode selection means further includes a calculator decimal mode and a calculator fractional mode. 8. Activate one of the decimal mode key and all numbers and fractions combination mode key to select one of the decimal notation method and all numbers and fractions combination mode, displaying a first value on a keyboard display operatively connected thereto; and inputting the displayed value into a display cell display including at least one of a display cell decimal display and a display cell fraction display. and if said first displayed value is constant in a series of individual calculations performed by the calculator, actuating an enter constant key to maintain said first displayed value as a constant value; , if the displayed first value is inaccurate, clearing the display cell display by actuating a display clear function key, resetting the display cell display, and clearing the display cell display by activating a display clear function key; activating at least one to select a second value, displaying the second selected value on the keyboard display operatively coupled thereto, and displaying the displayed second value as a display cell decimal display; enter a second cell containing at least one of the cell fraction displays and actuate the Enter Constant key if said second value displayed is a constant in a series of individual calculations performed by the calculator; maintain the displayed second value as a constant value, and if the displayed value is incorrect, clear the second display cell display by actuating a display clear function key operatively connected thereto; resetting a display cell, retrieving the first value from the first display cell, and retrieving the first value from the first display cell;
extracts the second value from the display cell, inputs the first value and the second value to a CPU (central processing unit), calculates the reduction or enlargement rate by the CPU, and calculates the reduction or enlargement rate from the A method of electronically calculating the reduction or enlargement ratio of a graphic comprising automatically displaying the reduction or enlargement ratio on a ratio display operatively coupled to a CPU. 9. inputting a third value into a third display cell to cause the CPU to calculate the value of the reduction ratio; inputting a fourth value input by the CPU into the fourth display cell; 9. The method according to claim 8, further comprising the step of automatically displaying the fourth value in a decimal value display cell and a fraction value display cell of the fourth display cell, and displaying a reduction rate value on the reduction rate display. Method. 10. a keyboard memory for storing a plurality of numerical values until reset; mode selection means operatively coupled to the keyboard memory for accessing the plurality of numerical values; and serially connected to the mode selection means; , a numeric keyboard means for selecting one value from the plurality of numeric values; a keyboard display connected in series to the numeric keyboard to display the numeric value selected by the numeric keyboard; and a keyboard display connected in series to the keyboard display. and collectively receiving values from the keyboard display;
a plurality of display cells for storing and displaying; microprocessor means and a plurality of mathematical function keys serially coupled to each of said plurality of display cells to calculate a reduction or enlargement factor value; a reduction ratio display coupled in series to display said reduction or enlargement ratio value; a first entry display cancel key for resetting said first entry display to zero; function selection means for selecting a function of the display cell; and resetting the keyboard display, the display cell decimal display, the display cell fraction display and the reduction ratio to zero, when the constant key is processed, the display cell decimal display and the display cell fraction display are reset to zero. an all-clear key that prevents the fractional display from becoming zero; a power supply means for providing electric power to the electronic calculator; the keyboard, the mode selection means, the multiple display cell displays, the keyboard, the display, the function selection means, and the microprocessor means. and a calculator casing containing a reduction and enlargement ratio display. 11. The electronic calculator according to claim 10, wherein the numerical keyboard includes a decimal keyboard consisting of a large number of specified decimal numbers and a fraction keyboard consisting of a large number of specified fractions. 12. a decimal value display in which said plurality of display cells display a decimal portion of a value from said first entry display; a fractional value display in which said plurality of display cells display a fractional portion of a value from said first entry display; and said first entry display; an enter function key for taking a value from a display and inputting the value into a decimal value display and a fraction value display of said display cell; an enter constant key to take a value from the display and enter it into said decimal and fractional displays as constants used in individual calculations; and a clear function to reset said decimal and fractional displays to zero. 11. The electronic calculator of claim 10, further comprising a key. 13. The mode selection means has a calculator fraction key for selecting one mode for performing mathematical function calculations in fraction notation consisting of whole numbers and fractions, and a mode for performing mathematical function calculations in decimal notation. Calculator decimal key to select the mode for calculating the reduction ratio value when calculating with fraction notation consisting of whole numbers and fractions Proportional calculator fraction key to select the mode for calculating the reduction ratio value when calculating with decimals, the reduction ratio value 11. The electronic calculator according to claim 10, further comprising a proportional calculator decimal key for selecting a mode for calculating the ratio. 14. The mode selection means calculates the reduction ratio and calculates the plurality of mathematical functions using an all-decimal notation, or calculates the reduction ratio using a fractional notation consisting of all numbers and fractions. 11. The electronic calculator of claim 10, further comprising a mode key for allowing calculation of said multiple mathematical functions. 15. The electronic calculator of claim 10, wherein said first entry display further includes a decimal value display and a fractional value display. 16. Scan input from a number of numeric keys, a number of fractional keys, and a number of function keys, determine the state of each key, and extract a value from at least one of the number keys and the number of fractional keys. is entered into a first entry display, display means for displaying said value in decimal and fractional notation from said first entry display, and display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation, and a display means for displaying said value in decimal and fractional notation; input into one display cell memory and scan a number of display cells including a display, an enter function key, an enter constant key and a display clear function key; a display for determining a state, retrieving a second value from said plurality of numeric keys and fractional keys, displaying said second value in a cell memory and displaying decimal and fractional notation of another of said plurality of display cells; inputting said value and said second value into said plurality of display cells and applying the equation "Reduction ratio = (W_3/W_2) x 100" for reduction or enlargement of width and reduction or reduction of height. Equation for expansion “Reduction rate = (h_1/h_2)
x 100" (h_1 and W_1 represent the height and width of the original work, h_2 and W_2 represent the height and width of the reproduced work), and calculate the reduction or enlargement ratio electronically through or a method for calculating the reduction or enlargement ratio of a graphic work utilizing an electronic central processing unit of a hand-held electronic calculator, comprising the step of displaying the value of the enlargement ratio on a percentage display means. 17. Third value. into the first entry display, retrieve a third value from the first entry display, and input the third value into the display cell memory and into the decimal and fraction display format of the third one of the plurality of display cells. calculating a fourth value; inputting said fourth value into said display means for displaying said decimal and fraction representations and said display cell memory of said fourth of said plurality of display cells; 17. The method of claim 16, comprising the steps of: