JP2599382Y2 - Waveform observation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display output device of a waveform observation measuring instrument, and more particularly to a device capable of observing simultaneous observation of multiple phenomena and continuous observation of long data at a time in an easy-to-understand manner. is there.

[0002]

2. Description of the Related Art When many waveforms (multiple phenomena) are observed at the same time, there have conventionally been the following methods for clearly recognizing them. (1) Display on a large, high-resolution display. (2) Color display on a color display.

[0003]

However, in the above-mentioned display method, there is some doubt as to whether or not the multi-phenomenon waveform can be displayed clearly enough to be useful for continuous observation. When observing multiple phenomena, as shown in FIG. 7A, it is useful to display waveforms vertically on a vertically long display screen (a horizontal time axis is common). When a large-sized display is used, it is desirable that the screen has an aspect ratio (aspect ratio) extremely smaller than 1 as shown in FIG. 7A. However, such a special aspect ratio is usually manufactured. No
It is not realistic to want it. In addition, there is nothing particularly useful when continuously observing a waveform composed of a long data string.
As shown in FIG. 3B, a super-long landscape display is desirable,
There is also a problem that this is not realistic.

In view of the above, an object of the present invention is to prepare a plurality of general-purpose displays and control them by organically combining them, thereby enabling simultaneous high-resolution display of multiple phenomena and long data strings. It is an object of the present invention to realize a waveform observation device capable of performing various kinds of display such as continuous display.

[0005]

According to the present invention, a plurality of analog input signals are digitized and stored in a data memory for each channel. A display data converter for individually performing coordinate conversion corresponding to display on channel data to obtain display data; a plurality of graphic memories provided for each channel and individually storing the respective display data; It is characterized by comprising a switch matrix circuit capable of arbitrarily switching output data and inputting the data to a plurality of displays, and a central processing unit that receives external instructions and supplies necessary control signals to each unit.

[0006]

In the device of the present invention, a plurality of input signals can be displayed on a plurality of displays, respectively, and the displays can be switched. In the display data converter, the analog signal of each channel stored in the data RAM is coordinate-converted appropriately in accordance with the display. An instruction on what kind of coordinate conversion is performed is given from the CPU. The coordinate-transformed data (display data) is guided to an arbitrary display through a switch matrix circuit. The switch matrix circuit is controlled by the CPU. Thereby, the input signal can be displayed on an arbitrary display, and the plurality of input signals can be displayed simultaneously with higher resolution by treating the plurality of displays as one large display.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a configuration diagram showing one embodiment of a waveform observation device according to the present invention. In the figure, reference numerals ₁₁ to 1n _denote analog-to-digital converters (hereinafter, referred to as AD converters), which respectively convert the analog input signals of the respective channels into digital signals. 2 _{1 to} 2 _n are data memories (normally random memories) for storing the output data of the AD converter of each channel.
An access memory RAM is used, which is also referred to as a data RAM). 3 is a display data converter for performing coordinate conversion on data of each channel read from the data memory.
₁ to 4 _n are graphic memories (also referred to as graphic RAMs) for storing display data of each channel output from the display data converter 3, and 4 _{n + 1} to 4 _{n + m} are display data such as cursors, grids, and menus. Graphic memory for storage.

Reference numeral 5 denotes a switch matrix circuit which can arbitrarily switch the connection relationship between a plurality of inputs and a plurality of outputs, 6 _{1 to} 6 _N display devices, and 7 a central processing unit having a function of controlling each unit. A device (hereinafter referred to as a CPU) 8 is a keyboard for inputting information to the CPU 7. The coordinate conversion in the display data converter 3 is managed by the CPU 7, and the CPU 7 instructs what kind of coordinate conversion is to be performed. The coordinate conversion includes various kinds of conversion processing such as, for example, movement of the origin on the XY axis, magnification in the X axis direction, and magnification in the Y axis direction. The CPU 7 collectively manages input / output selection in the switch matrix circuit 5 and selection of display data other than waveforms such as cursors, grids, and menus, and determines which channel signal is to be displayed on which display. ,
The CPU 7 instructs on which display the grid, the menu, and the like are to be displayed.

The operation in such a configuration will be described below. For each channel, storing each analog input signal to the digitized data memory (2 ₁ ~2 _n) in each AD converter. Thereafter, the data stored in the data memory read out in the storage order is sent to the display data converter 3, where
Predetermined coordinate conversion is performed in accordance with an instruction from the PU 7 and output as display data. When this display data is written to the graphic memories (4 ₁ to 4 _n ), the display data is conventionally uniquely displayed on one display. In the present invention, however, the output destination of each graphic memory is switched. -By controlling the matrix circuit 5 by the CPU 7, it can be displayed on any display device. The procedure of designating or changing the display to be displayed is performed by operating the keyboard 8, and the CPU 7 reads this to control the switch matrix circuit 5.

As described above, the input analog signal (waveform) is once digitized and stored in the memory, and then the data is sequentially read out from the memory and applied to the display via the switch matrix circuit, whereby the input analog signal waveform is converted into a plurality of signals. The information can be appropriately distributed and displayed on the display screen.

As described above, according to the present invention, signals of each channel can be displayed on an arbitrary display device as instructed from the keyboard 8, so that, for example, a normal display (FIG. 2A) is used. (Simultaneous display of waveforms of four channels) can be easily distributed and displayed on four separate displays as shown in FIG. The cursor in this case (this cursor is called the reference cursor)
It appears in common to the four display ₆₁ through _4, yet move in conjunction with each other (such a display and motion by management of CPU). With such a display, the time relationship between the waveforms can be easily grasped.

Various examples of the waveform observation apparatus according to the present invention, which are particularly characterized in how to combine a plurality of displays, will be described below. Figure 3 shows configuration is obtained by incorporating a plurality of indicators ₆₁ through 65 _2, the indicator ₆₁ through a two-tiered formula body left
₂ is arranged. The keyboard 8 on the right
And an input unit having an analog signal input terminal.

[0013] Figure 4 is is shown in side view, of a type having an external display 6 ₁₂ Other internal display _61.
External display 6 ₂ rotatably attached to the upper body,
When stored beforehand defeat the top surface of the main body as shown in FIG. (A), using causing it to align with the internal display ₆₁ of the display surface as shown in FIG. (B) at the time of use. FIGS. 5 and 6 show an extended display. In the case of FIG. 5, a stack of expanded display 6 ₂₂ on top of the built-in display _61, a case of using as the display screen vertically long, extended display 6 ₃₂ In the case of FIG. 6, 6 ₃₃ is arranged in a horizontal line, including the built-in display, so that the display screen is horizontally long.

[0014] The arrangement of the plurality of displays is not limited to only the embodiment. In the switch matrix circuit, any switching can be selected, and there is no restriction on the arrangement of the display.

[0015]

As described above, according to the present invention, assuming a plurality of displays, a switch matrix circuit capable of switching the output destination of each graphic RAM to an arbitrary display is provided. , Multiple displays
Can be treated as two large indicators. Conventionally, there was a limit in displaying a plurality of waveforms due to a lack of display area and display resolution. However, according to the present invention, there is no such limit, and at the same time, a plurality of waveforms can be displayed simultaneously with higher resolution.

[Brief description of the drawings]

FIG. 1 is a main part configuration diagram showing one embodiment of a waveform observation device according to the present invention.

FIG. 2 is a diagram showing a waveform display example in the present invention device.

FIG. 3 is a diagram showing an example of the arrangement of a plurality of displays.

FIG. 4 is a diagram showing another example of arrangement of a plurality of displays.

FIG. 5 is a diagram showing yet another arrangement example of a plurality of display devices.

FIG. 6 is a diagram showing yet another arrangement example of a plurality of display devices.

FIG. 7 is a display example for explaining portrait display and landscape display.

[Explanation of symbols]

1 ₁ to 1 _n AD converter 2 ₁ to 2 _n data memory 3 Display data converter 4 ₁ to 4 _n graphic memory 5 Switch matrix circuit 6 _{1 to} 6 _n display 7 CPU 8 Keyboard

Claims (1)

(57) [Scope of request for utility model registration] 1. A means for digitizing a plurality of analog input signals and storing them in a data memory for each channel, and individually performing coordinate conversion corresponding to display on data of each channel read from the data memory. A display data converter for obtaining data, a plurality of graphic memories provided for each channel for individually storing the display data, and an output data of the graphic memory being arbitrarily switched and input to the plurality of displays. A waveform observing apparatus comprising: a switch matrix circuit capable of receiving the signals; and a central processing unit that receives external instructions and supplies necessary control signals to each unit.