JP2571900Y2 - Digital oscilloscope - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital oscilloscope having a display device and a printer device, and more particularly, to an improvement in gradation display.

[0002]

2. Description of the Related Art Conventionally, in a digital oscilloscope having a display device and a printer device, there is no gradation in the printer device, and data is turned on (bright) or turned off (dark) on the screen of the display device. Only data could be printed on the printer. This is illustrated in FIG.
To explain, even if the luminance of the portion gradually changes, a phenomenon occurs in which the image is uniformly recorded on the sheet.

[0003]

[Devised Problem to be Solved] Thus, since the luminance gradation <br/> had appeared on the screen of the display device is recorded gone, state, etc. of the time change of the waveform (e.g., how often (For example, whether noise has occurred) cannot be recorded. The present invention has been made to solve the above-described problem, and has been made to realize a digital oscilloscope capable of expressing a gradation of luminance on a CRT when printing is performed by a printer device. Things.

[0004]

According to the present invention, there is provided a digital oscilloscope for displaying a display data signal outputted by a data processing means based on an output signal of a digitizing means , and a setting interface for inputting a gradation setting value of a printer. Control means for outputting a control signal based on an output signal of the setting interface to the data processing means ;
Inputting the control signal and the display data signal,
The luminance level represented by the display data signal of
A comparator that classifies the luminance signal into any one of the set luminance levels, and a luminance-classified output signal output by the comparator.
A signal converter that converts the output into a tone signal of the printer and outputs the signal;
A printer device for printing based on an output signal of the signal converter.

[0005]

The present invention uses a signal output from a display device, which indicates a gradation of luminance, and compares it with the value of the signal to convert the signal. It becomes possible.

[0006]

1 is a block diagram of an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a digitizing means for performing an analog-to-digital conversion of an input signal. Specifically, it is configured by an input stage amplifier, an analog / digital converter, and the like. Numeral 2 is a data processing means for converting a signal from the digitizing means 1 into display data. Reference numeral 3 denotes a display device, which displays data at a specified gradation based on a signal from the data processing means 2 . Usually, a CRT or the like is used as a display device (hereinafter referred to as CRT). Reference numeral 4 denotes a setting interface for inputting, from the outside, a setting as to which luminance of the CRT is to be printed at what gradation in the printer. Reference numeral 5 denotes a control unit which receives a signal from the setting interface 4, converts the signal into a signal of a corresponding CRT luminance, and outputs the signal to the comparator 61. The control means 5 also controls the operation of the data processing means 2 and the like. The comparator 61 compares the signal from the data processing means 2 with the signal from the control means 5 and outputs the result to the signal converter 62. Signal converter 62, an output signal of the comparator 61, and outputs a signal representing the gradation of the printer instrumentation <br/> location 7. The printer interface 6 is composed of the comparator 61 and the signal converter 62. Printer device 7 performs print by a signal from the printer interface 6, the tone is due to the signal output of the signal converter 62.

The operation in such a configuration will be specifically described. The input signal is converted into display data by the data processing means 2 via the digitizing means 1 and input to the display device 3. For example, assuming that the display data input to the display device 3 at this time is a 4-bit signal, the display device 3 can display the luminance in 16 gradations. ( This means that when there is no luminance gradation, the display is performed depending on whether a designated point (pixel) on the display device 3 is on or off .
Further, if the display data signal is set to 16 kinds, the luminance can be set to 16 kinds by using a voltage obtained by DA-converting the result. )

Here, a description will be given of the case where 4-bit data output to the display device 3 is directly used as display data and is output to the printer device 7 as a gradation signal. For example luminance in FIG. 2 is a 16-gradation, it is assumed luminance of the solid portion of the left that gradually fallen luminance and one-dot chain line and two-dot chain line in the right side up. At this time, it is assumed that the printer device prints the line segment and the portion where nothing is displayed with different gradations.

[0010] To this end, 1 is output to the CRT.
The comparator determines whether the 6-bit signal is a signal indicating the luminance of the one-dot chain line, the signal indicating the luminance of the two-dot chain line, or the luminance signal indicated by . The signal may be output to the printer device 7.
Therefore, based on the setting input (using a keyboard or the like), the setting interface 4 determines the brightness of the boundary and outputs the same to the control means 5. The control means 5 converts the signal into a value corresponding to any of the 16-bit signals.
The comparator 61 compares the value output to the CRT with the value from the control means 5, and outputs a signal of the comparison result to the signal converter 62. The signal converter 62 converts this signal into a signal representing the gradation of the printer device 7.

A specific configuration of the comparator 61 and the signal converter 62 will be described. It is assumed that a 16-bit signal value indicating the luminance of the dashed line is (a), and a signal value indicating the luminance of the dashed line is (b). This setting is output from the control means 5. In the comparator 61, a comparator for detecting a signal value of (0), a comparator for detecting that the signal value is larger than (0), and a comparator for detecting that the signal value is larger than (a) And the signal value is (b)
And a comparator for detecting that the value is greater than the threshold value. The signal from the data processing means 2 is input to these four comparators. Therefore, if the value of the signal from the data processing means 2 is larger than (a) and smaller than (b),
(B) Outputs other than that of the comparator 61 detecting that the level is larger than the threshold value indicate the H level. The values represented by these four signals are converted into 2-bit signals by an encoder in the signal converter 62. The two-bit signal determines the printing gradation of the printer device 7.

[0012]

[Effect of the invention] As described above in detail, according to the present invention compared to a digital oscilloscope Roscoe flop conventional example, realizing a digital oscilloscope having a function to impart gradation printing by the printer with a simple structure Becomes possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a display screen for explaining the present invention.

[Description of Signs] 1 digitizing means 2 data processing means 3 display device 4 setting interface 5 control means 7 printer device 61 comparator 62 signal converter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-247664 (JP, A) JP-A-2-185456 (JP, A) JP-A-62-128667 (JP, A) 9176 (JP, U) Actually open sho 59-151160 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G01R 13/20 G06F 3/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A digital oscilloscope for displaying a display data signal output by a data processing means based on an output signal of a digitizing means, wherein: a setting interface for inputting a set value of a gradation of a printer; A control means for outputting a control signal based on an output signal of the setting interface to the data processing means, and inputting the control signal and the display data signal, and
The luminance level represented by the data signal is indicated by the control signal.
A comparator for dividing into any of the set brightness levels ,
Preparing the luminance-segmented output signal output by the comparator
1. A digital oscilloscope comprising: a signal converter that converts a signal into a gray scale signal of a printer and outputs the signal; and a printer that prints based on an output signal of the signal converter.