JPS58190984A - 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. 2 and Fig. 2 has already been proposed, but in this case, a large number of light emitting elements EL are arranged along a linear scale M, and all the light emitting elements up to the display value emit light. It was something to do. In this type of device, the voltage corresponding to the numerical value input from the detection unit is input to multiple comparators set to different reference voltages, and compared with each reference voltage, the display connected to the subsequent stage is It is designed to control and drive a display section consisting of a panel, etc.

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, A comparator whose reference voltage is set within a voltage range corresponding to the difference between the voltage corresponding to the currently displayed value and the voltage corresponding to the newly input value almost instantly sends a signal to drive the light emitting element EL. Output. That is, the light emitting element EL that displays numerical values is
From the currently displayed state (Fig. 1) to the state where the display corresponding to the newly input value is displayed in a short step (Fig. 2)
To jump up and change Q'Kanaru. 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. However, it is hoped that a device that solves this problem will emerge.

To solve this problem, if the difference between the displayed value and the detected value to be displayed next is large (more than a certain arbitrary width), in order to eliminate the jumpy display, one segment should be set from the current displayed value. A method of lighting one book at a time is known.

However, with the above method, when switching the display, it takes a lot of time to switch the display when there are a large number of segments and the difference between the displayed value and the detected value is large, but this is a visual problem. However, it also had the disadvantage of poor responsiveness.

In order to solve the drawbacks of the conventional example, the present invention provides that when a predetermined value is exceeded, a predetermined area near the latest detected value is reached in the area of change from the currently displayed value to the latest detected value. It is characterized by updating and displaying all segments at once, and then updating and displaying the remaining segments up to the latest detected value one by one or by a predetermined number. (if the displayed value is smaller than the detected value) or a larger fixed number (if the displayed value is greater than the detected value), then the remaining segments up to the detected value are changed one by one or several segments at a time, and the display is switched until the detected value. The present invention provides an electronic analog display system that allows smooth display changes and shortens the time required for display switching. Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 3 shows a block diagram of an embodiment of the present invention, in which 1 is an input terminal, 2 is a detector, 3 is a comparator, 4 is a display data memory, 5 is a display, and 6 is a flicker prevention. circuit, 7
8 is the first segment increase/decrease circuit, and 8 is the second segment increase/decrease circuit. When the input is the engine speed or running speed, the signal input from the input terminal is sent to the detector 2 at a certain timing. measure. If the signal input from input terminal 1 is still a voltage, it is converted to a digital signal by an A-D converter, and a detector outputs a total of I'111j at certain timings.
Any measurement target may be used.

In the electronic analog display system of this embodiment configured in this manner, the difference between the current display value and the detected value is compared by the comparator 3, and when the difference is larger than the predetermined value [A], the following is performed: ]9 Display value> In the case of a detected value, first, a constant value [α], which is the first segment increase/decrease circuit 7, is applied to the detected value, and the current display value is switched to that value. After that, the second segment increase/decrease circuit 8 decreases the remaining segments by one or several [β] until the displayed value reaches the detected value. For example, the displayed value is 115.
”, and the detected value is 1-4”, a certain constant value [α] is 3
Then, if the remaining segments are changed one by one β, the actual display changes will be r15j, "7", "6", "5", "
4", and the display can be switched smoothly.

2. Display value (in the case of a detected value) First, the first segment increase/decrease circuit 7 subtracts a constant value [α] from the detected value and switches the current display value to that value. Thereafter, the remaining segments are increased by one or several [β] by the second segment increase/decrease circuit until the displayed value reaches the detected value. For example, if the displayed value is ``5'' and the detected value is ``18'', a certain constant value [α] is set to 6, and the remaining segments are changed by two lines [β] to sequentially switch the displayed value. The change in display is 15J, [21,
The values are "14", "16", and "18", and smooth display can be performed.

Note that if the difference between the current display value and the detected value is smaller than a predetermined width [A], the segments are switched one by one or several [β] at a time.

In addition, when the input signal is a pulse signal, the input pulse input from the human power terminal 1 is sent to a certain timing signal whistle to the detector 2.
Then, comparator 3 displays data memory 4.
The magnitude of the current display value stored in the detector 2 and the detected value of the detector 2 are compared. In this case, the following three types of determinations are made.

(a) Detection value - Display value≦A (b) Detection value - Display value>A (c) Detection value - Display value <A Here, in the case of (a), flicker is prevented by the flicker prevention circuit 6. In the case of (b), the first segment increase/decrease circuit 7 calculates the value obtained by subtracting α from the detected value of the detector 2, sends it to the display data memory 4, displays it as display data, and then The second segment increase/decrease circuit 8 adds and displays β to the contents of 4, and repeats this until the value becomes the same as the detected value. In the case of (c), the value obtained by adding α to the detected value is calculated and first displayed as a display value, and then β is subtracted from the contents of the display data memory 4 and displayed, so that the value is the same as the detected value. Repeat until the value is reached.

As mentioned above, in case (a), flicker prevention processing is performed in the flicker prevention circuit 6 in order to prevent unstable changes in the displayed value due to minute fluctuations in the detected value. Flicker prevention and display change operations in response to increases and decreases in detected values will be explained below.

Table 1 For example, as shown in Table 1, the detected value is 15'', ``
When the detected value is in the increasing direction such as "6" and "7", the detected value is used as the displayed value, and the detected value changes from "7" to "7" relative to the displayed value.
By adding a predetermined value, that is, "1" to the detected value and making it the displayed value, even if the detected value changes slightly, the displayed value will not change to "7". There is no flickering and stable display is possible.

In the case of B in Table 1, the detected values are "5", [6j, "7
” and when it is in the increasing direction, the detected value is the first! If the detected value is in a decreasing direction such as "6", "5", "4", or "31", [1] is added to the detected value and displayed.

As explained above, according to the present invention, if there is a difference of more than a certain value between the current displayed value and the detected value, the first segment increase/decrease circuit adds a certain value [α] to the displayed value. Subtract and
A fixed number less than the detected value (if the displayed value is smaller than the detected value) or a number greater than the detected value (if the displayed value is greater than the detected value) is displayed without fail, and then the remaining segments are increased and decreased by the second segment increase/decrease circuit. one or several segments [β
] and switching the detected value to the display value, it is possible to perform smooth display without jumps.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of a conventional display system, and FIG. 3 is a block diagram of an electronic analog display system according to an embodiment of the present invention. 1 input terminal, 2...detector, 3...comparator, 4...
Display data memory, 5... Display device, 6... Flicker prevention circuit, 7... First segment increase/decrease circuit, 8...
-Second segment increase/decrease circuit. Special ¥ [Director of the Office Mr. Kazuo Wakasugi 1 Display of the case 1982 Patent Application No. 73220 2 Name of the invention Electronic analog display system 3 Relationship with the person making the amendment Case Patent applicant Nagaoka Nganzaou Address Higashi, Nagaoka City, Niigata Prefecture Zao 2-2-3. Mr. is3
Name Treasure 1 Iji ＾i Pressure 1ji Tori 11 Representative 啜 五 A custodian 4, agent・T″272

Claims (1)

[Claims] (I) An electronic type that detects changes in the measured quantity as electrical changes, converts this detected value into a display signal, and displays the change in the measured quantity on a bar graph-shaped display area with aligned segments. In the analog display method, the difference between the current displayed value and the latest detected value is calculated, and if this difference exceeds a predetermined value, the latest detected value is displayed in the area of change from the currently displayed value to the latest detected value. An electronic analog display method characterized by updating and displaying all segments leading to a predetermined area in the vicinity, and thereafter updating and displaying the remaining segments leading to the latest detected value one by one or by a predetermined number.