JPS58190982A - Electronic analog display system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic analog display method that can provide smooth display when .

Conventionally, as a device for quantitatively displaying the numerical value of the detection section, the first
A device having a display panel as shown in FIG. It was capable of emitting light A. In this type of device, the voltage corresponding to the numerical value input from the detection section is input to multiple comparators set to different reference voltages, and compared with each reference voltage. It is designed to control and drive the display section, which consists of a display panel and the like.

However, if a new value with a large difference from the currently displayed value is entered in an extremely short period of time, e.g. less than the time required for the comparator to compare the input voltage with the reference voltage, The voltage corresponding to the difference between the voltage corresponding to the currently displayed value and the voltage corresponding to the newly input value. A signal for driving the element EL is output. That is, the light emitting element E that displays numerical values
L will jump from the currently displayed state (FIG. 1) to the state where the display corresponding to the newly input value is displayed (FIG. 2) in a short step. This type of display operation gives an unnatural feeling to the user who is trying to visually check the display panel, and also defeats the original purpose of this type of device, which is to display numerical changes as continuous and smooth quantitative changes. There has been a desire for a device that solves this problem for some time.

To solve this problem, when the difference between the displayed value and the detected value to be displayed next is large (more than a certain width), one segment is set from the current displayed value to eliminate the jumpy display. A method is known in which the lights are turned on one by one.

[-7 However, with the above method, when switching the display, it takes a lot of time to switch the display when there are many segments and the difference between the displayed value and the detected value is still large. It also had the disadvantage of poor responsiveness.

In order to solve the above-mentioned drawbacks of the conventional example, the present invention is characterized in that when the difference between the current display value and the latest detected value exceeds a predetermined value, sequential display is performed in units of arbitrary plural segments. The purpose is to provide an electronic analog display system that allows smooth display switching by displaying a fixed number of lines from the current display value and changing the display up to the detected value. Embodiments will be explained in detail below with reference to the drawings. ○ Figure 3 shows a block diagram of an embodiment of the present invention, where 1 is an input terminal, 2 is a detector, 3 is a comparator, and 4 is a block diagram of an embodiment of the present invention. Display data memory, 5 is a display, 6 is a flicker prevention circuit, 7
is a predetermined segment increase/decrease circuit, 8 is a rounding circuit,
When the input is the engine rotation speed or running speed, the signal is input from the input terminal and sent to the detector 2 at a certain timing.
If the signal input to the Ushida input sieve 1 to be measured is a voltage, it is converted to a digital signal by an A-D converter,
All you have to do is measure it with a detector at a certain timing, and the total... [j
The target can be any.

With the electronic analog display method of this embodiment configured as described above, the difference between the detected value and the displayed value is a certain value, and the difference is large.
If the detected value is larger than the display value, the predetermined segment increase/decrease circuit 7 adds a predetermined value B to the display data and displays it as display data. Here, if the detected value does not match the displayed value, the detected value and the displayed value are compared again, and the process is repeated until the difference between the displayed data and the detected value becomes smaller than B.

Also, detection [difference between direct and displayed value is greater than a certain value,
If the detected value is smaller than the display value, a predetermined segment increase/decrease circuit 7 subtracts a constant value B from the display data and displays it as display data. Here, if the displayed data does not match the detected value, the detected value and the displayed value are compared again, and the process is repeated until the difference becomes smaller than B.

[If a fraction is obtained after the second processing, the fraction processing circuit 8
A constant value A is added or subtracted from the detected value, and the process is repeated until the displayed value and the detected value become the same value.

Next, a specific example will be explained. First, if the difference between the displayed value and the detected value is greater than a certain value, for example, if two or more segments are turned on or off, and a fraction occurs when switching the current displayed value to the detected value. In other words, if the displayed value is "4" and the detected value is "117",
If you remove the segment by 1 by 2 trees, it will be 1, and the fraction will be 11.
occurs. When a fraction occurs in this manner, the presence or absence of the fraction is detected, and the fraction processing circuit 8 adds the fraction to the predetermined number of segments at the time of the initial increase and decrease, and changes the segment.

In the above example, the current display value [4-1 and detected value] is 17.
The difference is [13], and since there is a fraction [1-1], first 3
Increase the book segment to [71, hereinafter "9",
The segments are increased to 111-1, "13", [15-1, 1174].

1. For example, if the displayed value is 1211 and the detected value is 171, if you change the segments by 4, if a fraction appears, decrease the displayed value by 4 segments, and finally display the fractional segment. do. That is, first "17
” will be displayed, then [131, 191 will be displayed, and finally “
If the difference between the displayed value and the detected value is greater than a certain value, the segment is changed by a predetermined value, and ;, rj, (l
When jl is obtained, this fraction may be changed one by one. For example, if the displayed value is 21-1 and the detected value is 71, if you change the segments by 4, the displayed value will be 1.
21], 'J, 19-1, "]31.191, r'
8, l, [7-1].

Note that in the second segment increase/decrease display, the number of segments to be increased or decreased may be changed depending on the magnitude of the difference between the displayed f value and the detected value. In other words, when the difference is large, 4
When the difference is small, by changing it to two,
It is possible to improve the responsiveness up to the detected value and improve the display effect by keeping the response time constant.If the difference between the displayed value and the detected value changes by more than a certain value, the segment may be sequentially increased or decreased by a predetermined number, and fractions may not be displayed. For example, if the current display (direction is "4" and detected value is 113), "61" is displayed first, then "8", and so on.
"10" and "121" are displayed, but "13" is not displayed. However, in the case of an increase, the displayed value was adjusted so that it did not exceed the detected value, and in the case of a decrease, it was scaled so that it did not fall below the detected value.In this case, for the error corresponding to the fraction, When the next 1 white 1 is detected and the difference becomes less than a certain value (Y-), a circuit that updates the detected value as a display value is added.

In the case of this embodiment, a flicker prevention circuit 6 is added to prevent unstable changes in the displayed value due to minute fluctuations in the detected value. Flicker prevention and display change operations will be explained.

B. In the flicker prevention circuit of the actual example, the detected value from the detector 2 and the displayed value of the display data memory 4 are compared, and the difference between the detected value and the displayed value is set to a predetermined value (. If it is smaller than 6, do flicker prevention processing?
, ]-61, "When it is increasing to 7-1 (・sun,
The ejection value is used as the display value, and when the detected value is in a decreasing direction from 71 to 16 relative to the display value, a predetermined value, that is, 1-1, is added to the detected value to obtain the display value. Even if the detected value fluctuates slightly, the displayed value <-, = l”i
, J, there is no change and there is no flicker, allowing for stable display.

In the case of B in Table 1, the detected value is "5", [61,17
-1 and in the increasing direction, the detected value is the 4,4 display value, and the detected value is "6", "5", [41, "3-]"
If the detected value is in the decreasing direction, 111 is added to the detected value and displayed.

IY is when the difference between the displayed value and the detected value is more than a certain value and a fraction occurs as a result of segment increase/decrease operation.
In addition, when fraction processing is not performed, flicker prevention processing is performed on the next detected value, and the operation is performed to update the detected value.

As explained above, according to the present invention, when there is a difference between the current display value and the detected value by a certain value or more, the predetermined segment note,
p, 'Change the segments by a predetermined number with the Q reduction circuit, -
・By processing the A1 number with the l!a number processing circuit, it is possible to display it smoothly without any jumps.

[Brief explanation of drawings]

1121 and 2 are explanatory diagrams of conventional display systems, and No. 31 is a block diagram of an embodiment of the present invention. 1... Input Kata 1 "M child, 2... Detector, 3... Comparator, 4... Table/1° data memory, 5... Display,
6... Flicker prevention circuit, 7 - Predetermined segment increase/decrease circuit, 8... Fraction 1A times. 1' J , < 2 dings such as 12 vinegars 3
4shi: Name ¥ Article Xk et al. Name 1F Representative Atsuo Nagai 4, Agent'? 272 Address l1li 4-1113 Kan 10, Ichikokubu 4-chome, City, Chiba Prefecture
Shi 5f・li iF instruction 111・Y

Claims (1)

[Scope of Claims] (1) Changes in the quantity to be measured are detected as electrical variations, and this detected value is converted into a display signal, and the quantity to be measured is displayed on a display area in the form of a bar graph in which segments are arranged. In the electronic analog display method for displaying changes, the difference between the current display value and the latest detected value is calculated, and if this difference exceeds a predetermined value, follow-up display is performed sequentially in multiple segments of @ and @. (2) If the difference between the current display value and the latest detected value exceeds the predetermined value and the difference is large, sequential tracking 2. The electronic analog display system according to claim 1, wherein a large number of segments are set, and when the difference is small, a small number of segments are set. (3) determining the difference between the current displayed value and the latest detected value;
The number of segments aligned in the display area corresponding to this difference is
2. The electronic analog display method according to claim 1, wherein when a fraction is generated in the follow-up display of the arbitrary plurality of segments, segments in an area corresponding to the fraction are displayed one by one. (4) Determine the difference between the current display value and the latest detected value, and if the number of segments aligned in the display area corresponding to this difference causes a fraction in the follow-up display of the arbitrary plural segment units, each plural segment 2. The electronic analog display system according to claim 1, wherein the fractional segments are simultaneously displayed in any display area during the unit display process.