JPS588513B2 - Ink print screen display screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cathode ray display system that allows multiple patterns to be displayed for one data display.

One piece of data displays one point on the cathode ray tube surface.

A curve such as a spectrum to be displayed on the surface of a cathode ray tube is represented by a series of points displayed by a large number of data.

Displayed curves are often required to be expanded or contracted or shifted up, down, left or right.

Therefore, even if a part of the curve is enlarged and displayed, in order for it to be recognized as a continuous curve, it is necessary to make the data as dense as possible, that is, to increase the number of data as much as possible.

By the way, when the number of data is increased, the time required for one display becomes longer when displaying the entire range of the curve, which causes flickering in the displayed curve.

In general, in addition to displaying curves based on data, it is also necessary to display patterns consisting of characters or symbols, so the flicker becomes even more noticeable.

What should be considered here is that while flickering characters and symbols can make the screen extremely difficult to see, curved lines are not as difficult to see as letters if the general shape can be discerned.

Furthermore, in the present invention, most of the characters and symbols in the displayed pattern express contents that should be given commands to the computer, and these characters and symbols are the objects to be instructed by the light pen. Therefore, it is desirable to eliminate the trouble caused by flickering when giving instructions using a light pen.

The present invention has been made in view of the above points, and relates to a cathode ray display method that allows data to be displayed several times at a frequency that does not cause pattern flickering during one data display period.

The present invention will be explained in detail below based on the drawings.

In FIG. 1, information from an analytical instrument 1 is introduced into an AD/DA converter 3 via a sub-interface 2, where it is AD converted and then introduced into a computer 5 via an interface 4. .

Computer 5 processes information from ink face 4 and stores it in memory 6.

For example, if analytical instrument 1 is a pulsed nuclear magnetic resonance apparatus, the free induction attenuation signal from 1 is AD converted at 3, and 5
The signal is Fourier transformed and integrated and stored in the memory 6 in the form of an NMR spectrum.

The memory 6 stores a pattern print table representing a pattern to be displayed and various numerical values and addresses required during the operation of each routine.

At least about 2000 samples are required to display the entire range of the required spectrum and other curves.

That is, about 2000 pieces of data are required.

To display these on the tube surface of the cathode ray tube 7,
The data is passed from the memory 6 to the computer 5 and the interface 4, is DA-converted by the AD/DA converter 3, and is supplied to the cathode ray tube 7 through the sub-interface 2, where it is displayed as a curve such as a spectrum.

The curve can be recorded by the recorder 8 if necessary.

When displaying a pattern on the surface of the cathode selection tube 7, the computer 5 operates based on the pattern print subroutine to send a signal to the ink face 4 to designate a character that is successively called up from the pattern print table in the memory 6. It is supplied to the generation circuit 9.

9 generates a character signal based on the character designation signal, and supplies this to the cathode ray tube 7 via the sub-interface 2.

The cathode ray tube 7 displays a pattern based on the character signal.

FIG. 2 shows the state of the display on the surface of the cathode ray tube, and the data is indicated by l1.

The patterns are E, XE, XS, YG, YL, A and R.

The straight line l2 is called a line marker and represents a number line with the center O as the zero point, the right side being positive and the left side being negative.

In the pattern displayed on the cathode ray tube surface,
S, YG, YL, A, R and E respectively relate to the curve l1, and represent expansion or contraction on the horizontal axis, shift on the horizontal axis, expansion or contraction on the vertical axis, shift on the vertical axis, return to the original state, and the above XE, XS
, YG, and YL, the content for instructing only the instruction last selected by the light pen to reset and return to the original pattern is shown.

Line marker l2 represents the amount of shift or the rate of expansion or contraction.

If you position the tip of the light pen 10 near the front of a desired character, for example, XS, in the pattern displayed on the surface of the cathode ray tube 7, the time of display of The timing at the time of detection is detected by the character waste generation circuit 9, and the content of the instruction is sent to the ink face 4 and the computer 5.
The data is stored in the memory 6 via the .

Next, when the light pen is pointed at a certain point on the line marker 12, for example, point P, the pulse detected by the light pen at the time of light emission at point P is sent to the computer 5, where it is sent to the computer 5.
A shift amount of the curve l1 corresponding to the length of P is calculated, and the shift amount is stored in the memory 6, and the curve l1 is shifted to the right.

Next, consider the time required to display the data pattern and line markers.

It takes about 100 μs to display one piece of data, and about 5 ms to display a pattern and line marker.

In order to eliminate flickering on the screen, it is necessary to set the display cycle to a maximum of 40 ms.

Therefore, in order to obtain a flicker-free screen, the number of data items must be 300 or less in one display.

In one embodiment of the present invention, the number is 256.

Since the number of data items is usually about 2000, when all data is displayed, the pattern and line marker will be displayed eight times for one data display.

Therefore, although patterns and line markers can be made into good flicker-free images, data flickers.

Note that when the curve l1 is enlarged 8 times or more, the data, patterns, and line markers are all displayed sequentially, so that all of them become good images.

The operation of the present invention will be explained below.

In FIG. 3, when a start command 11 is issued, the total number of data to be displayed on the cathode ray tube surface is stored in the register R1 in the memory 6 (12).

Next, the address of the data to be displayed first is stored in register R2 (13).

This data address indicates the memory address where data is stored, and is called the initial data address.

Register R3 stores the address of data to be displayed last, that is, final data (14).

Next, the digital value of the electric signal required to deflect the distance between each data on the X axis on the cathode ray tube surface is stored in the register R4 (15).

If the cathode ray tube uses an electrostatic deflection method, this digital value
It is the value obtained by dividing the digital value of the voltage value necessary for deflecting from the left end to the right end by the number of display data "R1" stored in the register R1.

For example, when the bright spot is located at the left end, the deflection voltage is -10
V, the rightmost one is +10V, and the number of display data "R1" is 1000, then R4 is a value expressed as a digital value of 0.02V.

Next, a digital value of -10 cm, a voltage value for locating a bright spot at the left end (X=0), is input into register R (16).

The register R6 is set to zero, and the initial data address "R2" is stored in the register R7 (17).

Next, the value "R6' stored in register R6 is 25.
It is determined whether it is n times 6 (18).

However, n is a positive integer represented by 0, 1, 2, . . . .

In this case, since "R6" is zero, the judgment is YES, and the pattern print subroutine 19 operates to display the pattern.Then, the line marker subroutine 20 operates and the line marker is displayed. .

Next, the data specified in register R7 is read out and placed in register R8 (21).

Next, the stored values R5”, “R5” and “ of registers R5 and R8 are
R8" and convert them to DA by AD/DA converter 3.
It is converted and displayed on the cathode ray tube 7 (22).

The value R,' of register R4 is added to the value R,' stored in register R5, and the result is stored in register R5 (23).

In register R7, 1 is added to the value "R7' (24
).

It is determined whether data address 'R7' in register R7 is equal to final data address 1R3'.

In this case, since it is the second display data, “R”
7""R3", so 1 is added to the value 1R6' of register R6 indicating the count value of display data (
26).

Next, it is determined whether "R6" is an integral multiple of 256 or not.

In this case, since "R6"=1, it passes through the NO side and directly enters the operation 21 without displaying the pattern and line mark force.

Thereafter, the data display operation is repeated in the order of 18, 21, 22, 23, 24, 25, and 26 until "R6" reaches 256.

Therefore, when "R6" = 256, judgment 18 is YE.
To specify the S side, display the pattern 19,
Next, the line marker is displayed 20.

Thereafter, data is displayed until "R6" reaches 512 in the same manner as described above.

While repeating the display of data, patterns, and line markers in this way, when the displayed data address "R7" becomes equal to the final data address "R3", the data display is completed. From judgment 25, the process passes through the YES side and returns to 16 to start displaying the data from the beginning again.

Note that when you operate the light pen to specify XE or XS and specify the line marker, line marker subroutine 2
Returning from 0 to 12, the number of display data, initial data address, final data address, and data increments are reset, and the same operation as described above is performed.

As explained above, according to the present invention, instructions using a light pen are required, and the display is repeated in a pattern that is easy to feel bothersome and at a cycle that does not cause flickering of the line marker, regardless of the amount of data. Therefore, it is possible to reduce the trouble caused by flickering of the screen due to an excessive amount of data to be displayed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the invention, FIG. 2 is a diagram for explaining the invention, and FIG. 3 is a flowchart showing an embodiment of the invention. 1: Analytical equipment, 2: Subink face, 3: AD/D
A converter, 4: Interface, 5: Computer, 6
: Memory, 7: Cathode ray tube, 8: Recorder, 9: Character generation circuit, 10: Light pen.

Claims (1)

[Claims] 1. When displaying a predetermined pattern and data stored in a memory on the surface of a cathode ray tube, the predetermined pattern is repeatedly displayed at a cycle that does not cause flickering to the naked eye, and after the display of the predetermined pattern is finished, the next pattern is displayed. A cathode ray display system characterized in that as much data as can be displayed is read out from memory and displayed.