JPS59195102A - Electronic scale - Google Patents

Abstract

PURPOSE:To enable displaying of a scale from an optional position by setting the origin position in a scale display part by the data on the origin position inputted thereto and displaying the scale with the preset origin position as a reference when the scale data is applied thereto. CONSTITUTION:An origin position data 28 reads the data from a key input register 25 therein and outputs the same to an adder 27 and a pulse generating part 29 when an origin set signal CEN is applied thereto. The adder 27 performs an adding operation to the input data and applies the result of the addition to a pulse generating part 34 when a scale display signal is applied from an arithmetic control part 22. The output pulse from the part 34 is inputted to a shift register 35. A control part 38 for scale display drives a scale display part 7 to display the scale according to the signal applied thereto via EX OR circuits 370-37150. The scale is thus displayed with the optional position of the scale display part as the origin and the display from an optional position is made possible without moving the electronic scale body, by which the electronic scale is made easy to use.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic scale that displays input numerical values or numerical values obtained by calculation on a scale.

[Prior art and its problems]

An electronic scale configured to display the length by inputting a numerical value representing the length is generally known from, for example, Japanese Utility Model Application No. 54-33749.

However, the above-mentioned conventional electronic school displays the scale from the origin set at the left end of the display section, and when creating a graph image, it is difficult to change the scale depending on the sign of the data! When drawing line segments on both sides of the 7 reference points, the electronic scale itself had to be moved, which was very inconvenient.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object of the present invention is to provide an electronic scale that can display a scale starting from an arbitrary position on the scale display section.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. First, the external configuration shown in FIG. 1 will be explained. In the figure, 1 is a case body, and a scale part 2, a numerical display part 3, a keyboard 4, and a power switch 5 are provided on the top surface of the case body. The scale section 2 is provided along one side edge of the case body 1, and consists of a scale section 6 and a scale display section 7. The scale portion 6 is, for example, 150. The scale up to is printed and the minimum scale is 1. It becomes. The scale display section 7 is constructed using, for example, a liquid crystal display element, and has linear segment electrodes arranged at the origin position and 150 segment electrodes each having a length of IM parallel to the scale section 6. and arranged in a straight line. Then, in the scale part 2, for example, r
OJ, r50J, rlooJ.

It is numbered r150J.

The numerical value display section 3 can display, for example, an eight-digit numerical value, and the index display section 3a can display a two-digit index.

Further, the keyboard 4 includes numeric keys 11 and various function keys 12.

The function keys 12 include keys for specifying various calculations, as well as, for example, a scale key 13 (5cale) for displaying the actual length on the scale display section 7, and a conversion key 1 for selecting and specifying the functions of the double function keys.
4 (INU), a start point setting key 15 (Center) for specifying the start point of scale display, a code conversion key 16, and the like.

Next, the configuration of the electronic circuit provided within the case body 1 will be explained. In the figure, reference numeral 21 denotes a key manual section, which is made up of 4M by the keyboard 4. The data input from the key human power section 2 is sent to the arithmetic control section 22. The arithmetic control section 22 includes a key human power section 2
Various control signals are output according to the input data from 1, but when the scale key 13 is operated, the scale display signal S'cal e is output, and when the start point setting key 15 is operated, the start point setting signal CEN is output. Output. Scale display signal 5cal output from the calculation control section 22
e is delayed for a certain period of time by the D-type flip-flop 23, and the start point setting signal CEN is delayed by the D-type flip-flop f24.
It will be delayed for a certain amount of time. Further, the calculation control unit 22
When the numerical key 11 is operated in the key manual input section 21, the numerical input data is written into the key manual register 25. The data entered in this key manual register 25 is
It is sent to the numerical display control section 26 and displayed on the numerical display section 3. Further, the number data set in the key manual register 25 is sent to the adder circuit 27, and the start and point position registers 28
sent to. This starting point position register 28 reads data from the key manual register 25 when the starting point setting signal CEN is applied, and inputs data from the adding circuit 27 and the pulse generating section 2.
Output to 9.

This ie pulse generator 29 includes a scale display signal Sc,
Signal 5 delayed by ale by 7 lip flop 023
Cale, D and start point setting signal CBN are set to IJ.

Signals CEN and D delayed by the floating point 24 are inputted as operating signals via an OR circuit 30. The pulse generating section 29 is activated when the output of the OR circuit 30 becomes "'IH" and generates a number of pulses corresponding to the data from the starting point position register 28. is input as a shift pulse to the shift register 31 for starting point position data having a 150-bit configuration.The data input terminal of the shift register 31 receives the output signals CEN and D of the flip 70 block 24 and the Q output of the flip frog 32. is input through OR circuit 33 through 7. The flip-flop 32 is set by the output signal 5cale', D of the flip-flop 23, and the output signal C'F of the flip-flop 24 is set.
Reset by JN, D. The addition circuit 27 also receives a scale display signal 5c from the calculation control section 22.
When the ale is detected, an addition operation is performed on the input data, and the addition result is provided to the pulse generator 34. This pulse generator 34 is activated when the output signal 5cale, D of the flip-flop f2s is applied, and generates a number of pulses corresponding to the data applied from the adder circuit 27. The pulses output from the Noculus generator 34 are input as shift pulses to a 150-bit addition data shift register 35. A "1" signal is always input to the data input terminal of the shift register 35. In addition, the above shift register 31.35
is reset by the scale display signal 5cale and the start point setting signal CEH applied via the OR circuit 36. The corresponding bit outputs of the shift registers 31 and 35 are sent to the scale display control section 38 via exclusive disjunctive sum circuits (hereinafter abbreviated as EX-OR circuits) 37o to 3715o. Konorokale display control section 38
drives the scale display section 7 to display in accordance with the signals provided via the EX-OR circuits 37 to 3715o.

Next, the operation of the above embodiment will be explained. For example, the third
If the 75th position of the scale display section 7 is to be set as the starting point as shown in FIG. The numerical manual input is written into the key manual input register 25 from the arithmetic control section 22 . Next, when the starting point setting key 15 is operated as shown in FIG. 4(1), the starting point setting signal CEN shown in FIG. 4(2) is output from the calculation control section 22.
The shift registers 31 and 35 are reset, and the data "75" held in the key manual register 25 is transferred to the starting point position register 28. Then, the starting point position signal CEN is delayed by a certain period of time by 7°24 by the flip-flop, and the signal CEN is delayed as shown in FIG. 4 (3).
, D is output. These signals (JN, D are written to the O-th bit of the shift register 31 via the OR circuit 33, and are also sent to the pulse generator 29 via the OR circuit 3o. 29 is activated and the starting point position register 2 is activated as shown in FIG. 4 (4).
75 77 pulses are generated according to the number data of 8. According to this shift pulse, the above shift register 3
The Pa1# signal held in the Pa0# bit of 1 is the third
As shown in Figure (1), it is shifted to the 75th bit.

At this time, the contents of the shift register 35 are all tu On.
Therefore, among the EX OR circuits 37o to 3715°,
The output of the EX OR circuit 3775 corresponding to the 75th bit of the shift register 31.35 becomes °'1''.Therefore, the scale display control section 38 controls the scale display section 7 as shown in FIG. 3(1). The display is driven using the position 75. as the starting point of the scale display.

After setting the starting point position as above, input the scale data. For example, as shown in FIG. 3(2), the numerical data "5o" is input, and then the scale key 13 is operated. The above numerical data "5o" is 1, key manual register 25
is set to Next, by operating the scale key 13 as shown in FIG. 5(1), the scale display signal 5cale shown in FIG. 5(2) is output from the arithmetic control unit 22, and the shift registers 31 and 35 are reset. At the same time, the addition circuit 27 operates. This addition circuit 27
adds the number data “75” in the starting point position register 28 and the number data “50” in the key manual register 25, and outputs the addition result r125J to the pulse generator 34.

On the other hand, the scale display signal 5cale is delayed for a certain period of time by the 7-lip flop 23 and is output as a signal 3cale, D as shown in FIG. 5(3).

This signal f3cale, D sets the fritsuno 70 tsuzo 32, and its Q output “1” is sent to the OR circuit 33.
The signal is input to the shift register 31 via. Furthermore, the pulse generator 29.3 is activated by the signals 5cale and D.
4 is activated, and the pulse generator 29 registers the starting point position register 28.
The pulse generator 34 generates 12 shift pulses according to the output of the adder circuit 27.
Five shift hulls occur. As shown in FIG. 3 (2) by the above shift zf pulse, °'1# is written in the O~75 pits of the shift register 3, and 111# is written in the O~125 pits of the shift register 35. is written. Therefore, among the EX-OR circuits 37o-37150, the logic conditions of the EX-OR circuits 3776-371□5 corresponding to the 76th to 125th bits of the shift register 31.35 are satisfied, and the output becomes P1''.

Therefore, the scale display control section 38 drives the scale display section 7 to display at a position of 76 to 125 degrees, as shown in FIG. 3(2).

Scale display is performed from the starting point setting position as described above, but if negative scale data is input from the above state as shown in Figure 3 (3), negative scale display is performed from the starting point setting position. be able to. That is, when the code conversion key 16 is operated after inputting the numerical data "40", the data r-40J is entered in the key manual register 25. Next, when the scale key 13 is operated, the scale display signal 5cale is output from the arithmetic control section 22, and the shift registers 31 and 35 are reset. Furthermore, the addition circuit 2 is connected to the scale display signal 5cale.
7 is activated, and the number data r-4 of the key manual register 25 is activated.
0j and the numeral data "75" of the starting point position register 28 are added, that is, r-40+75=35J is added, and the addition result "35" is given to the A' pulse generating section 34. Therefore, after that, the signals 5cale and D output from the frizzoflo f23 are output from the non-N pulse generator 29 and J
4, the pulse generator 29 generates 75 shift pulses according to the number data of the starting point position register 28, and the Noculus generator 34 generates 35 shift pulses according to the output of the adder circuit 27. . As shown in FIG. 3 (3) by the above shift pulse, 1" is written in bits 0 to 75 of the shift register 31, and
5, 1” is written to bits 0 to 35. Therefore, E
Among the X-OR circuits 37 to 37150, shift register 3
EX OR circuit 3 corresponding to 36 to 75 bits of 1.35
The logical conditions of 736 to 3775 are satisfied and the output is '1
becomes #.

Therefore, the scale display control section 38 drives and displays the positions of the scale display sections 7036 to 75g as shown in FIG. 3(3). That is, a line segment of -40 gourds is displayed on the scale from the setting starting point 75 gourds on the scale display section 7.

In the above embodiment, the actual length is displayed as the scale display, but the scale display is not limited to this, and only the starting point and the ending point may be displayed, or a scale at each predetermined pitch may be displayed.

Furthermore, in the above embodiment, the scale part 2 has numbers ro, 1
, "50", rlooJ, and r150J are fixedly provided, but these numbers may also be displayed on the dot matrix display section. In this case, the numbers are changed according to the setting of the starting point position, and the set starting point position is "6ro", "5ro".
If it is displayed as "o"..., it will be even easier to understand.

〔Effect of the invention〕

As described above, according to the present invention, scale display can be performed starting from any position on the scale display section, and therefore, line segments, scales, etc. can be displayed from any position without moving the electronic scale body. It is very easy to use and convenient.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a front view showing the external configuration, Fig. 2 is a block diagram showing the configuration of the electronic circuit, and Figs. 3 (1) to (3) are key operations. FIG. 4 and FIG. 5 are timing charts for explaining the operation. DESCRIPTION OF SYMBOLS 1... Case body, 2... Scale section, 3... Numerical display section, 4... Keyboard, 5... Power switch, 6... Scale section, End... Scale display section, 11 ...
Numeric keys, 12...Function keys, 13...
Scale key, J5...Start point setting key, 21...Key human power section, 22...Arithmetic control section, 25...Key human power register, 28 River starting point position register, 29.34...
- Mother pulse generation unit, 31...Shift register for start point position data, 35...Shift register for addition data.

Claims (1)

[Claims] An electronic scale that displays the length of input numerical data or calculated numerical data on a scale includes a means for inputting starting point position data and a starting point position of the scale data according to the starting point position data input by this means. An electronic scale comprising: a setting means; and a means for displaying a scale on the scale display section with the starting point position as a reference when scale data is given.