JPH09153075A - Screen collating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it easy to find a discrepant part and prevent it from being overlooked by detecting the width of the discrepant part to be displayed when the detected discrepant part is displayed on a screen, and displaying it more than the pattern which actually becomes discrepant when the detected width is smaller than an arbitrary value. SOLUTION: Waveform data (A and B) are read in and the discrepant pattern between the both is detected (S8 and S9). Further, the pattern widths PW of individual discrepant parts which are stored in a buffer are detected (S10 and S11). The number PA of patterns which are displayed over the entire screen is detected and the ratio α=PW/PA of the numbers of patterns between the whole screen and discrepant part is calculated (S12 and S13) and compared with a reference value (S14). When the ratio α is smaller than the reference value, the patterns before and after the discrepant pattern are added as dummy display patterns for exaggerated display are added (S15). Then display color control data is added to the data of the exaggerated display part (S16) to adds colors to the respective parts, which are displayed more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen collating method, and more particularly to waveform data (state value) of simulation results.
The present invention relates to a screen collating method for displaying the result of comparison with the predicted waveform data (expected value).

[0002]

2. Description of the Related Art A conventional screen collating method is to display a matching portion and a non-matching portion of a comparison result of waveform data on a screen.
The ratio of the display of the non-matching portion to the entire screen is not considered.

A conventional method will be described with reference to the flow shown in FIG. Each of the waveform data A (expected value) and the waveform data B (state value) is read (step 8), and a mismatch pattern between both data is detected (step 9).
Next, when an unmatched pattern is detected, the unmatched pattern number is stored in the buffer (step 10). Further, the waveform of the pattern number for which the mismatch is detected is emphasized (step 18). The original waveform and the emphasized data are superimposed and displayed on the screen (step 17). Such a conventional matching method is disclosed in, for example, Japanese Patent Laid-Open No. 59-198356.

FIG. 4 is an image displayed on the screen when the conventional collating method is applied. The expected value waveform data 41 and the state value waveform data 42, which are two waveform data, are compared to determine whether the waveform data match or do not match. Comparison result display waveform 43
Is displayed. The waveform in FIG. 4 has a matching portion 44 and a non-matching portion 45.

An emphasizing method for distinguishing a matching portion and a non-matching portion is blinking display of a specific pattern.

[0006]

However, when the waveform is displayed on the screen in several patterns or more and there are only a few mismatched patterns, the conventional display method displays the mismatched portions as follows.
It occupies a very small area on the screen and is often difficult to recognize and often overlooked. Therefore, in order to recognize the mismatched portion by the conventional display method, the waveform is enlarged and displayed until there is enough area to recognize the mismatched portion display on the screen, and the mismatched portion of all the waveform data is confirmed at the magnification level. Must go. Therefore, the waveform data, which usually has tens of thousands of patterns, is to be checked several hundred times, and there is a problem in that it takes time.

[0007]

A screen collating method of the present invention is a screen collating method for collating two or more waveform data and distinguishing a matching portion and a non-matching portion of the waveform data and displaying them on the screen. The display width is detected, and an exaggerated display portion is added with an arbitrary width before and after the detected non-coincidence portion to display the waveform data.

Further, the screen collating method of the present invention may be configured such that the colors of the matching portion, the non-matching portion and the exaggerated display portion of the screen collating method of the present invention are changed. Further, the screen matching method of the present invention may be configured to change the brightness of each of the matching portion, the mismatching portion, and the exaggerated display portion. Furthermore, the screen matching method of the present invention may be configured such that the blinking cycle of each of the matching portion, the mismatching portion, and the exaggerated display portion is changed.

That is, in the screen collation method of the present invention, when displaying the detected non-matching portion on the screen, the width of the non-matching portion to be displayed is detected. By displaying more than the generated pattern, it is easy to find the mismatched portion and prevent oversight.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the screen collating method of the present invention will be described with reference to FIGS.

In this embodiment, when comparing the expected value waveform data 1 of the waveform data having a value for each pattern with the state value waveform data 2, the expected value is the waveform predicted in advance in the editor or CAD. Indicates the waveform data input in. The state value refers to the waveform data output by logic simulation or the like (see FIG. 2).

Referring to FIG. 1, the screen collating method according to the present embodiment reads waveform data (A, B) (step 8) and detects a mismatch pattern between both data (step 9). Further, the pattern number in which the mismatch occurs is stored in the buffer (step 10). The pattern width PW of each non-matching portion is detected by calculating the number of consecutive patterns in the pattern numbers of the non-matching portions stored in the buffer in step 10 (step 11).

On the other hand, in step 12, the number PA of patterns displayed on the entire screen is detected, and in step 13, the ratio α = PW / PA of the number of patterns in the non-matching portion with the entire screen is calculated. In step 14, this ratio, α and reference value (eg 1/20)
And compare the size. If the value of the ratio α is smaller than the reference value, the patterns before and after the mismatch pattern stored in step 10 are added as dummy display patterns for exaggerated display (step 15). The width of the dummy display pattern is controlled so that the ratio of the display width indicated by the sum of the non-matching pattern and the dummy display pattern is the same as the reference value. When the value of the ratio α is larger than the reference value, the exaggerated display portion is not added. Next, data for controlling the display color is added to the data stored in the buffer in step 10 and the exaggerated display portion data added in step 15 (step 16). Then, as shown by the waveform 3 in FIG. 2, respective colors of the matching portion 4, the mismatching portion 5, and the exaggerated display portion 6 are added to the basic waveform and displayed.

The method of comparing the waveforms, the method of exaggerating the non-coincidence portion, and the method of displaying the non-coincidence portion and the exaggeration display portion in different colors have been described above. A method is also possible.
Instead of adding the data for controlling the color of the display in the part of step 16, these methods have a step of adding data for controlling each of them.

[0015]

According to the present invention, it is possible to easily find the presence / absence of a mismatched portion even when waveform data is displayed in multiple patterns. Therefore, the efficiency of simulation result analysis can be improved, and oversight of mismatched portions can be prevented.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a screen matching method according to an embodiment of the present invention.

FIG. 2 is a display diagram for explaining an embodiment of the present invention.

FIG. 3 is a flowchart of a conventional method.

FIG. 4 is a display diagram for explaining a conventional method.

[Explanation of symbols]

 1,41 Expected value waveform data 2,42 State value waveform data 3,43 Comparison result display waveform 4,44 Match display part 5,45 Mismatch display part 6 Exaggerated display part 7 Waveform data 8 Waveform data reading step 9 Mismatch pattern detection step 10 step of storing mismatch pattern in buffer 16 display control data addition step 11 pattern width detection step 12 screen width recognition step 13 mismatch display ratio detection step 14 ratio comparison step 15 exaggerated part addition step 17 screen display step 18 pattern emphasis step

Claims (4)

[Claims] 1. A screen collating method of collating two or more waveform data and distinguishing a matching portion and a non-matching portion of the waveform data and displaying them on a screen. The display width of the non-matching portion is detected, and the detected non-matching portion A screen collation method characterized by displaying the waveform data by adding an exaggerated display part with an arbitrary width before and after. 2. The screen matching method according to claim 1, wherein colors of the matching portion, the non-matching portion, and the exaggerated display portion are changed. 3. The screen matching method according to claim 1, wherein the brightness of each of the matching portion, the non-matching portion, and the exaggerated display portion is changed. 4. The screen matching method according to claim 1, wherein the blinking cycle of each of the matching portion, the non-matching portion, and the exaggerated portion is changed.