JPS61112901A - Variable division ruler - Google Patents

Abstract

PURPOSE:To offer a ruler available for change of divigious as to kind and property, by executing a keyboard-selected program from various division generating programs stored beforehand. CONSTITUTION:From a keyboard F, informations, such as distinctions of equi- distributed divisions, logarithmic divisions, kinds of figures displayed on a scale E, unit dimensions of divisions, necessity of display of the cursor H, etc. are introduced. A controlling apparatus I stores these inputs tentatively8 and interprete them and executes a division signal generating program elected from a memory J. At this moment, data of the unit dimension information, etc. of the divisions stored by the input of the keyboard F are used to transmit the generated division signal to a driver K. And allowing free displacements of position of the cursor H by the keyboard F, the amounts of displacement are detected by the apparatus I. To display with numerals on a display unit D, if required. Further, by applying from the keyboard a command 'display n-equi- divided divisions', the n-equi-divided divisions can be displayed on the unit D also.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to length measurement.

[Conventional technology]

A ruler with a scale (the ruler referred to in this specification includes property rights) is used to measure the length. FIG. 3 is a plan view showing a conventional ruler, where A is the ruler and B is the scale.

Since the method of using such a ruler is well known, the explanation thereof will be omitted.

[Problem that the invention seeks to solve]

The problem with conventional rulers is that their scales are fixed. It is inconvenient to use a ruler with equidistant graduations for displaying logarithmic or exponential functions, and it is necessary to use a ruler with logarithmic or exponential graduations. Furthermore, when it is desired to arbitrarily set the scale of the drawing, it is inconvenient that the scale interval is fixed.

Furthermore, many rulers do not come with a cursor, so there are problems such as the inability to measure using a cursor.

This invention was made to solve the above-mentioned problems, and an object thereof is to provide a ruler in which the type and attributes of the scale can be easily changed. However, in this specification, the attributes of a scale mean specifications to be determined for the scale, such as scale dimensions, scale display figures, and whether or not a cursor is attached.

[Means for solving problems]

In this invention, the scale is displayed by a display device having an electronically controlled display mechanism such as the display mechanism of a cathode ray tube display device or the display mechanism of a liquid crystal display device, and in order to control this display, the scale is A scale signal was generated by executing a scale generation program selected from among various scale generation programs in accordance with input signals from an attached keyboard.

[Effect]

Therefore, the scale of the ruler of the present invention can be changed to any required scale by inputting from the attached keyboard.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view showing an embodiment of the present invention, in which (C) is a ruler, (D) is a display section, (old) is a displayed scale, (F) is a keyboard, and (G) is a power switch,
I is the displayed cursor.

FIG. 2 is a block diagram showing one embodiment of the present invention.
The same reference numerals as in the figure indicate the same parts, [I] is the control device, (
Jl is a memory, wholesale is a driver, and (L) is a power supply.

It is possible to display any figure on the display part (D), and what kind of scale signal is given to the display part (D) from the control device (I) via the driver ■ in correspondence with the scale figure to be displayed on the display part D). The determination of whether to do so belongs to a conventionally well-known technique, and the explanation thereof will be omitted here.

From the keyboard (F), information such as whether the scale is an equal scale or a logarithmic scale, and whether or not water is to be used for displaying the scale (G) is entered. The control device (I) temporarily stores these information inputs, decodes them, and writes memo!
Execute the scale signal generation program selected from J fJl according to the above information, and use data such as scale unit dimension information input from the keyboard (Fl and temporarily stored) to Send the scale signal to driver ■.

In addition, the cursor can be moved by the input signal from the keyboard n.
Move the position freely. The amount of movement of the cursor position is detected by the control device (Il), and if necessary, a number representing the amount of movement can be displayed on the display section (Dl).

Furthermore, when dividing an arbitrary straight line segment into n equal parts, move the cursor I to one end of the line segment, move it to the other end, detect the length of the line segment, and press " By inputting a signal instructing to display a scale divided into n equal parts, a scale obtained by dividing the length of the line segment into n equal parts can be displayed on the display section (D).

It should be noted that it is easy to add the functions of a desktop electronic calculator to the ruler of the present invention, and this can be done by displaying a variable scale on a circular ruler instead of a straight line ruler as shown in FIG.

Furthermore, in addition to a cathode ray tube display or a liquid crystal display, a display section using a light emitting diode (LED) can also be used as the display section.

〔Effect of the invention〕

As described above, according to the present invention, since the scale of the ruler is displayed on the display section having an electronically controlled display mechanism, any scale can be displayed, which is highly effective in practical use.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an embodiment of the present invention, FIG. 2 is a block diagram showing an embodiment of the invention, and FIG. 3 is a plan view showing a conventional ruler. (C1 is a ruler, (Dl is a display part, 徊) is a scale, a decoy is a keyboard, a wholesaler is a cursor, (1) is a control device, (Jl is a memory. In addition, the same code|symbol in each figure is the same - or Osho. Show parts.

Claims (2)

[Claims] (1) A keyboard for inputting signals specifying the type of scale to be displayed and its attributes; in accordance with the signals input from this keyboard, the type specified by the above signal is used using the program and data stored in memory in advance; A variable scale ruler comprising a control device that generates a scale signal having specified attributes, and a display device that displays the scale signal generated by the control device in a form that can be visually recognized as a scale. (2) The keyboard specifies cursor display as one of the attributes of the scale, the control device generates a scale signal that includes a cursor signal when cursor display is specified, and the display device generates a scale signal that includes the cursor signal. means for displaying the cursor signal in a figure that can be easily distinguished from other scale signals, moving the display position of the cursor signal in response to a signal input from the keyboard, and determining a numerical value representing the amount of movement with respect to the scale. A removable scale ruler according to claim 1, characterized in that: