JPH10282942A - Display device for distribution system diagram - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display graphic data with high graphicalness using the maximum color performing display update processing of graphic data speedily and efficiently by synthesizing obtained first to nth image data and second to nth image data for mask in accordance with priority of display. SOLUTION: An image data synthesizing section 5 reads out respectively first image data relating to first graphic data from a first image data holding section 3a1, second image data relating to second graphic data from a second image data holding section 3a2, and image data for mask from an image data holding section 3m2 for mask, and synthesis-processes the first image data, the second image data, and the image data for mask for each pixel conforming to priority of display. Synthesis image data in which the second graphic data is preferentially displayed for the first graphic data by this synthesis-processing is obtained in a synthesis result image data holding section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution system diagram display device for graphically displaying a distribution system diagram for monitoring and controlling a distribution system.

[0002]

2. Description of the Related Art A power distribution system diagram display device is used by being incorporated in, for example, a power system monitoring and control system for power distribution system monitoring and control and for man-machine interface with an operator. That is, the distribution system diagram display device includes a circuit breaker installed at, for example, a drawer outlet of a substation, a distribution line (distribution line) such as a high-voltage line, and a switch installed in the middle of a predetermined distribution line. Various types of equipment including the various types of equipment that make up the distribution system and the connection status of each type of equipment are stored as a database. This is a device for displaying, and an operator monitors and controls the distribution system with reference to the distribution system diagram displayed by the distribution system diagram display device.

According to the distribution system diagram display device, each equipment such as a high voltage line and a switch has a name set for management and identification, and a color and a shape corresponding to various states of the equipment. Since the graphics are displayed graphically using the graphic data including the symbols, the operator can visually recognize the entire distribution system at a glance by visually recognizing the displayed distribution system diagram.

[0004] Further, in a recent distribution system diagram display device, a distribution system diagram in which monitoring and control targets (distribution system equipment) are associated with a map (for example, a street diagram including names of power consumers, streets, municipalities, etc.). That is, a distribution system diagram in which graphic data representing each component on a street map and graphic data representing each distribution system equipment are superimposed on a high-resolution full graphic CRT with a graphic function improved from a normal CRT It is common to display the information via a PC, and furthermore, the distribution system display function and the operator support function are enhanced.

[0005] By the way, with the advent of the sophistication and information society (multimedia society) of urban functions in recent years, various types of equipment such as distribution lines in a distribution system have spread over a large and geographically large area. Are located in Especially,
A large number of distribution lines are usually installed so as to cover a vast area while linking each other in a tree shape.

Also, with the advent of the above-mentioned highly information-oriented society, regional differences in power demand have arisen. In regions where power demand is high, a large number of equipment such as distribution lines and switches are geographically close to each other. Installed. Therefore, even on a display screen of a distribution system diagram that displays a distribution system in an area where power demand is high, graphic data representing a large number of equipments are densely displayed at positions close to each other.

As a result, it is not possible to secure a sufficient area on the power distribution system diagram for independently displaying graphic data including names and symbols representing the respective equipment, and it is not possible to secure the same equipment or different equipment. Has to be superimposed and displayed.

As described above, when the graphic data is superimposed on the distribution system diagram, the visibility of the superimposed display portion deteriorates. And the order of display (hereinafter referred to as display priority) is determined according to the identification status of each graphic data by the monitoring control operator, and the graphic data having the highest display priority is compared with other graphic data groups. Therefore, it is necessary to preferentially display the graphic data having the highest display priority so that the graphic data can be easily viewed.

Here, a conventional distribution system diagram display device for displaying a graphic data group representing equipment in consideration of the above-described display priority will be described with reference to FIG. In the following description, a case where the display priority has two levels will be described.

A conventional power distribution system diagram display device 8 shown in FIG.
According to FIG. 0, the graphic data (graphic data representing each component of each equipment and street map) constituting the distribution system diagram is displayed as digital data having, for example, position information, color information and brightness information as display priority. It is stored in different storage units depending on the degree. That is, among the graphic data constituting the distribution system diagram, the graphic data (first graphic data) having a low display priority, such as a street symbol, a municipal name, and a distribution line symbol, is stored in the first power distribution system data storage unit 81a1. , High-priority graphic data (second graphic data) such as a switch symbol, a switch name, a customer name, and a distribution line name are stored in the second power distribution system data storage section 81a2 in advance.

[0011] Of the first graphic data and the second graphic data, the graphic data representing each equipment of the power distribution system is illustrated so as to have color information and brightness information corresponding to the system state of each equipment. If the system status changes, the color information and brightness information of the graphic data representing the respective equipment are rewritten by the data setting unit to correspond to the changed system status. It has become.

Then, the first distribution system data storage unit 81 is first stored in the graphic data drawing unit 82 of the distribution system diagram display device 80.
The first graphic data is read from a1 and based on the position information, color information and brightness information of the first graphic data, the first graphic data is stored in a main memory such as a frame memory or a RAM. Is rendered as one frame of image data in the image data holding unit 83 constituted by an image storage area or the like assigned to the image data. That is, the color information and the brightness information included in each of the first graphic data are written to predetermined pixels corresponding to the position information as pixel data (image data) having, for example, an 8-bit gradation pixel value.

Subsequently, the graphic data drawing unit 82 reads the second graphic data from the second power distribution data storage unit 81a2, and reads the position information, color information, and brightness of the second graphic data. Based on the information, the second graphic data is drawn in the image data holding unit 83 as one frame of image data. That is, the color information and the brightness information of each of the second graphic data are, for example, 8
The pixel data (frame image data) having the pixel value of the bit gradation is written to a predetermined pixel corresponding to the position information.

At this time, the second graphic data overlapping the first graphic data
, That is, the second graphic data further written in the pixel where the first graphic data is written in the image data holding unit 83, is overwritten on the first graphic data. The graphic data to be written to the pixel is the second graphic data from the first graphic data.
Is rewritten to the graphic data.

At the end of drawing, the name data and symbol data constituting the first and second graphic data written to each pixel of the image data holding unit 83 are pixels having various colors and brightness, respectively. It is represented as data. That is, the gradation information (color information, brightness information) of the first and second graphic data stored as the pixel data in each pixel of the image data holding unit 83 is converted into each equipment and street map constituting the power distribution system diagram. Is set appropriately (so that each component is clearly identifiable) for each of the components, the entire image data composed of each pixel data of the image data holding unit 83 is used for each equipment and street map. Each component is represented as graphic data.

Then, the display section 84 reads out the image data stored in the image data holding section 83 and performs color display via a color display (not shown). At this time, in the portion where the first graphic data having the lower display priority and the second graphic data having the higher display priority overlap, the second graphic data having the higher display priority is always displayed with priority.

By the way, as described above, when the system state of each equipment constituting the distribution system changes, the first distribution system data storage unit 81a1 and the second distribution system data storage unit 81a2 respectively correspond to the change. Since the contents (gradation information) of the stored first graphic data and second graphic data are respectively rewritten, it is necessary to reflect the rewritten contents in the image data holding unit 83.

However, in the area where the first and second graphic data are superimposed, the first display data having the lower display priority is displayed.
When the system status of the equipment corresponding to the figure data changes, the display update processing of the first figure data, that is, the first figure data is sent to the image data holding unit 83 via the figure data drawing unit 82. Performing the redrawing process overwrites the second graphic data having a higher display priority stored in the same pixel. For this reason, after redrawing the first graphic data corresponding to the equipment whose system status has changed, the second graphic data corresponding to the equipment having a higher display priority whose status has not changed is also displayed. I had to redraw. in this way,
The conventional distribution system diagram display device has been unusable because it took too much time to update the graphic data display corresponding to the change in the system state.

Therefore, the information amount (for example, 8 bits) assigned as the pixel value of the image data holding unit is set to 2
A distribution system diagram display device having a function of shortening the above-described graphic data display update processing time by using the divided (upper 4 bits / lower 4 bits) is considered.

That is, according to the distribution system diagram display device 90, as shown in FIG. 20, the graphic data constituting the distribution system diagram is displayed as digital data having position information, color information and brightness information, and the display priority is given. It is stored in different storage units depending on the degree. That is, the first graphic data having a lower display priority is stored in the first distribution system data storage section 81a1, and the second graphic data having a higher display priority is stored in the second distribution system data storage section 81a2 in advance. .

At this time, the first graphic data drawing section 91
Reads out the first graphic data from the first distribution system data storage unit 81a1 and converts the color information and the brightness information of the first graphic data into pixel data having a 4-bit gradation in the image data storage unit 93. Drawing is performed on the lower 4 bits of a predetermined pixel corresponding to the position information. Further, the second graphic data drawing section 92 reads the second graphic data from the second power distribution system data storage section 81a2, and converts the color information and the brightness information of the second graphic data into a 4-bit gradient. The pixel data is drawn in the upper 4 bits of a predetermined pixel corresponding to the position information in the image data holding unit 93 as the pixel data to have.

Then, the display data sequential scanning section 95 of the display section 94 sequentially scans each pixel of the image data holding section 93, and stores the 8 bits of upper 4 bits and lower 4 bits stored in each pixel. Each pixel value is read, and the pixel value conversion unit 96 refers to a color map 97 set in advance in a memory or the like, and converts the 8-bit pixel value read by the display data sequential scanning unit 95 into a predetermined color and brightness. Is converted to data representing the height.

At this time, the color map 97 is set as shown in FIG. For example, when the least significant bit d in the upper 4 bits (abcd) of the 8 bits is "1", the data in which the display color is always black regardless of the value of the lower 4 bits (efgh). Is set to a value, and when the second least significant bit c of the upper four bits is c = 1, the display color is always set to a red data value regardless of the value of the lower four bits. You. When the upper 4 bits are all "0", the display color is set by the value of the lower 4 bits.

That is, even when the first graphic data having the lower display priority and the second graphic data having the higher display priority overlap, the upper 4 bits of the pixel of the superimposition area in the image data holding section 93 are " Because it is not 0 "
The data set by the pixel value conversion unit 96 for each pixel in the superimposed area is the display color converted by the color map 97 corresponding to the second graphic data (high-order 4-bit data) that always has a high display priority. Data.

The data representing the predetermined color and brightness converted for each pixel by the pixel value conversion unit 96 in this manner is supplied to the D / A converter 98 and the color display 9.
9 is displayed in color, and in the superimposed area,
The display color data corresponding to the second graphic data having the higher display priority is always displayed with priority.

At this time, in the superimposition area of the first and second graphic data, the first graphic data is drawn according to a change in the system state of the equipment corresponding to the first graphic data having the lower display priority. Even if it is corrected, the redrawn first graphic data is overwritten only in the lower 4 bits of each pixel in the image data holding unit 93, and the upper 4 bits of each pixel are replaced.
It has no effect on the bit part. That is, even if the system state of the equipment corresponding to the first graphic data having the lower display priority changes, the second graphic data corresponding to the equipment having the higher display priority, which has not changed, is drawn again. Since there is no need to correct, the graphic data display update processing corresponding to the system state change can be performed quickly and efficiently.

[0027]

As described above, FIG.
According to the conventional distribution system diagram display device shown in FIG. 9, the graphic data display update process corresponding to the system state change takes too much time, and thus cannot be used.

On the other hand, the distribution system diagram display device shown in FIGS. 20 and 21 can execute the graphic data display update processing at a higher speed than the conventional distribution system diagram display device.

However, FIG. 20 to FIG.
In the distribution system diagram display device shown in FIG. 1, the gradation of the pixel data assigned to the first graphic data and the second graphic data is such that the gradation of each pixel of the image data holding unit 93 is 8 bits. Regardless, since it is 4 bits, which is half of that, each figure data is
It could only be represented by 6 colors (2 ⁴ ) or 15 colors (2 ⁴ -1) where one pixel value was a transparent color.

That is, if each pixel of the image data holding unit 93 has a gradation of 8 bits, each graphic data has a maximum value unless the above-mentioned bit division processing including the color information and the brightness information is performed. It should be able to be represented by 256 colors (2 ⁸ ) or 255 colors (2 ⁸ -1), and the display colors were greatly reduced, and the visibility of the distribution system diagram was deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to speedily and efficiently execute a display update process of graphic data constituting a power distribution system diagram, and to convert the graphic data into a maximum color. The purpose of the present invention is to improve the visibility of the distribution system diagram by displaying the image in high graphic.

[0032]

According to a first aspect of the present invention, there is provided a power distribution system diagram display apparatus including a plurality of components such as equipment related to a power distribution system. In a distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control represented as a plurality of figures, a predetermined position information and color information corresponding to the plurality of components are respectively provided. Storage means for classifying and storing the plurality of graphic data having the first graphic data having the lowest display priority to the n-th (n is an integer of 2 or more) graphic data having the highest display priority; Drawing the first to n-th graphic data in pixel areas corresponding to the position information in n frame image data holding units corresponding to the screen of the display, respectively. First drawing means for obtaining first to n-th image data having pixel values including the color information, and n-1 corresponding to the screen of the display based on the second to n-th graphic data. The second through n-th masks only the pixel areas where the second through n-th graphic data exist in the frame image data holding units.
A second drawing means for drawing each of the mask image data, the first to n-th image data and the second
To the n-th mask image data in accordance with the display priority, and a distribution system diagram based on the synthesis result image data obtained by the synthesis processing of the image data synthesis means. Display means for displaying a graphic via the display.

[0033] In the power distribution system diagram display apparatus according to claim 2, the second drawing means includes a pixel in which the second to n-th graphic data exists for the (n-1) image data holding units. Is set to "1" and the other pixels are set to "0" to obtain the second to n-th mask image data, and the image data synthesizing unit sets the display priority. .., N−1) of the (n−1) combining units, and the k-th (k = 1,..., N−1) combining unit is a k-th combining unit.
(K-1) th combined image data (when k> 2) or the first image data (when k = 2) obtained by the image data combining process of the first combining unit and the (k + 1) th image Means for combining the data and the (k + 1) -th mask image data in accordance with the display priority to generate k-th combined image data.
The k-th (k = n-1) synthesized image data obtained by the image data synthesis processing of the (k = n-1) synthesis unit is supplied to the display means as the synthesis result image data.

In the power distribution system diagram display apparatus according to the third aspect, the k-th (k = 1,..., N-1) synthesizing unit converts the pixel value of each pixel of the k + 1-th mask image data. An inversion processing unit for performing an inversion processing; and each pixel value of the (k + 1) th mask image data subjected to the inversion processing and the k-th pixel value
-1 of the k-1th synthesized image data (in the case of k> 2) obtained by the image data synthesizing process of the synthesizing section or the pixel value of the first image data (in the case of k = 2). A logical product execution unit for performing a logical product between the pixel data of the image data obtained by the logical product and each pixel value of the (k + 1) th image data, and A logical sum execution unit for creating composite image data.

According to the distribution system diagram display apparatus described in claims 1 to 3, each has predetermined position information and color information corresponding to a plurality of components such as equipment related to the distribution system. A plurality of graphic data are classified and stored as first graphic data having the lowest display priority to n-th graphic data (n is an integer of 2 or more) having the highest display priority by the storage means. The first to n-th graphic data stored by the storage unit are drawn by the first drawing unit on pixel regions corresponding to position information in n frame image data holding units corresponding to the screen of the display. Thus, first to n-th image data having pixel values including color information are obtained.

In addition, based on the second to n-th graphic data, the second drawing means causes the second to second frame image data holding units corresponding to the screen of the display to be stored in the (n-1) -th frame image data holding units. The second to n-th mask image data for masking only the pixel area where n graphic data exists are drawn.

Then, the obtained first to n-th image data and the second to n-th mask image data are combined by the image data combining processing means according to the display priority.

That is, n-
By the k-th (k = 1,..., N−1) combining section in one combining section, the (k−1) th combined image data (k) obtained by the image data combining processing of the k−1th combining section >
2) or the first image data (k =
2), the (k + 1) th image data, and the (k + 1) th image data
Are combined in accordance with the display priority to generate k-th combined image data.

At this time, in the k-th (k = 1,..., N-1) synthesizing unit, the inverting processing unit inverts the pixel value of each pixel of the (k + 1) -th mask image data to obtain the (k + 1) -th mask image data. Mask image data in which the pixel value of the pixel in which the graphic data exists is inverted from “1” to “0” and the other pixels are inverted from “0” to “1” by “1” is obtained.
Next, each pixel value of the inverted (k + 1) th mask image data and the (k-1) th combined image data obtained by the (k-1) th combining unit image data combining process (when k> 2) Alternatively, a logical product is executed by the logical product execution unit between each pixel value of the first image data (when k = 2) and a pixel of a portion where the (k + 1) th graphic data overlaps in the kth image data Image data in which only the value is "0" is obtained.

Next, a logical sum is executed between each pixel value of the image data obtained by the logical product and each pixel value of the (k + 1) th image data by the logical sum execution unit. The k-th composite image data is created by overwriting the pixel area having the pixel value “0” in the image data with the (k + 1) -th image data having a higher display priority than the k-th image data.

That is, the (k + 1) th image data is
Since the pixel area where the pixel value has become “0” in the k-th image data is overwritten based on the (k + 1) -th mask image data, the position information and the color information of the k-th graphic data temporarily change, Even if each pixel value of the k-th image data is updated by performing the re-drawing process of the first image data by the first drawing unit in accordance with the change, the k + 1-th image data is updated.
Has no effect.

Thus, the k-th (k = k-1) image data obtained by the k-th (k = n-1) synthesizing unit is obtained.
= N-1), that is, the first to n-th combined image data
The combined result image data overwritten in descending order of display priority in the image data of is supplied to the display means,
The display means graphically displays a power distribution system diagram based on the synthesis result image data via a display.

According to the distribution system diagram display device of the fourth aspect, the k-th (k = 2,..., N−1) in the n−2 (n = 3 or more) combining units of the image data combining unit. Of the (k−1) th combined image data (k
> 2) or the second image data (k
= 2), the (k + 1) -th image data and the (k + 1) -th mask image data are combined according to the display priority, and k-th combined image data is created. Further, the second to n-th mask image data are combined by the mask image data combining means to create combined mask image data.

Then, by the image data synthesizing means,
The display priority of the k-th (k = n-1) synthesized image data obtained by the image data synthesis processing of the k-th (k = n-1) synthesis unit, that is, the second to n-th image data The combined result image data overwritten in descending order, the combined mask image data created by the mask image data combining means, and the first image data are combined according to the display priority, and are obtained by the combining processing. The combined image data, that is, the combined result image data overwritten in the order of the display priority in the first to n-th image data is supplied to the display means, and a power distribution system diagram based on the combined result image data is provided via the display. Is displayed graphically.

According to a fifth aspect of the present invention, there is provided a distribution system diagram display device for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as equipment related to the distribution system are represented as a plurality of figures. In the distribution system diagram display device having the above, a plurality of graphic data each having predetermined position information and color information corresponding to the plurality of components are converted into first graphic data having the lowest display priority to
Storage means for classifying and storing the m-th (m is an integer of 2 or more) graphic data having the highest display priority, and n (n <m) frame image data holding units corresponding to the display screen Wherein at least a part of the first to m-th graphic data, the display priority order is continuous and graphic data having a difference in display update frequency are shared by the n frame image data holding units. The color information by drawing the remaining graphic data in the frame image data holding units other than the common frame image data holding unit in the n frame image data holding units. First drawing means for obtaining n pieces of image data having pixel values including the image data, and a frame image corresponding to the screen of the display. A plurality of graphic data having at least some of the second to n-th graphic data, wherein the order of the display priority is continuous and the display update frequency is different. The mask image data for masking only the pixel area where the plurality of graphic data exists is drawn on the common frame image data holding unit in the n-1 frame image data holding units, and Mask image data for masking only the pixel area where the remaining graphic data exists in the frame image data holding units other than the common frame image data holding unit in the n-1 frame image data holding units based on the A second drawing means for obtaining n-1 mask image data by drawing Wherein the n pieces of image data obtained by the drawing process for one of the drawing means second
Image data synthesizing means for synthesizing the n-1 mask image data obtained by the drawing processing of the drawing means in accordance with the display priority, and a synthesis result obtained by the synthesizing processing of the image data synthesizing means Display means for graphically displaying a distribution system diagram based on the image data via the display.

According to the distribution system diagram display device of claim 5,
By means of the first drawing means, at least a part of the first to m-th graphic data has a continuous display priority order and graphic data having a difference in display update frequency (for example, s-th graphic data, The s + 1-th graphic data and the s + 2-th graphic data, and the display update frequency is less than the s-th graphic data <s + 1
Is drawn in a common frame image data holding unit among n (n <m) frame image data holding units corresponding to the screen of the display, and the remaining figure data is represented by the n figure data. Each of the frame image data holding units has a frame image data holding unit other than the common frame image data holding unit, so that n pieces of image data having pixel values including the color information are obtained. Also,
The s-th graphic data, the s + 1-th graphic data, and the s + th graphic data among the second to the n-th graphic data by the second drawing means.
The s-th to (s + 2) -th graphic data exist in a common frame image data holding unit among n-1 (n <m) frame image data holding units corresponding to the screen of the display based on the second graphic data. Draws mask image data that masks only the pixel area
Based on the remaining graphic data, the frame image data holding units other than the common frame image data holding unit in the (n-1) frame image data holding units are masked only for the pixel area where the remaining graphic data exists. Each of the mask image data is drawn to obtain n-1 mask image data for convenience.

Hereinafter, synthesized image data is obtained by image data synthesizing processing according to the display priority of the n image data and the n-1 mask image data, and is graphically displayed via the display means. .

According to a sixth aspect of the present invention, there is provided a power distribution system diagram display apparatus for displaying a power distribution system diagram for power distribution system monitoring and control in which a plurality of components such as equipment related to the power distribution system are represented as a plurality of figures. In the distribution system diagram display device having a plurality of graphic data having predetermined position information and color information respectively corresponding to the plurality of components, the first to m-th (m: Storage means for classifying and storing graphic data of 2 or more integers) and the first to m-th graphic data corresponding to the position information in the m frame image data holding units corresponding to the screen of the display. A first drawing unit that obtains first to m-th image data having pixel values including the color information by drawing each of the pixel regions; 1 on the basis of the graphic data of the m,
A second drawing unit that draws first to m-th mask image data for masking only a pixel area where the m pieces of graphic data exist in the m frame image data holding units corresponding to the screen of the display; A drawing means for selecting n (n ≦ m) graphic data to be displayed as a graphic in the power distribution system diagram from the first to m-th graphic data, and selecting each of the selected n graphic data Selection setting means for setting the display priority of the first drawing means, and the first to m-th image data obtained by the drawing processing of the first drawing means, the n-th graphics data being selected by the selection setting means. The first to the n-th image data and the n pieces of graphic data selected by the selection setting means in the n pieces of graphic data obtained by the drawing processing of the second drawing means. Image data combining means for performing image data combining processing according to the display priority set by the selection setting means based on the first to n-th mask image data, and combining processing by the image data combining means. Display means for graphically displaying, via the display, a power distribution system diagram based on the obtained synthesis result image data.

According to the power distribution system diagram display apparatus of the sixth aspect, the selection setting means selects n (n ≦ m) pieces of the first to m-th graphic data to be displayed as a graphic in the power distribution system diagram. The graphic data is selected, and the display priority of each of the selected n graphic data is set. And
First to n-th image data relating to n pieces of graphic data selected by the selection setting means in the first to m-th image data obtained by the drawing processing of the first drawing means, and the second drawing means Selected by the selection setting means in the n pieces of graphic data obtained by the drawing processing of
Image data combining processing is performed by the image data combining processing means according to the display priority set by the selection setting means based on the first to n-th mask image data relating to the individual figure data. Then, a power distribution system diagram based on the synthesis result image data obtained by the synthesis processing of the image data synthesis means is graphically displayed via the display means.

According to a seventh aspect of the present invention, there is provided a power distribution system diagram display device for displaying a power distribution system diagram for power distribution system monitoring and control in which a plurality of components such as equipment related to the power distribution system are represented as a plurality of figures. In the distribution system diagram display device having the above, a plurality of graphic data each having predetermined position information and color information corresponding to the plurality of components are converted into first graphic data having the lowest display priority to
Storage means for classifying and storing the n-th (n is an integer of 2 or more) graphic data having the highest display priority;
To draw pixel values including the color information and the position information by drawing the n-th graphic data on pixel regions corresponding to the position information in the n frame image data holding units corresponding to the screen of the display. Drawing means for obtaining the first to n-th image data having the first to n-th image data based on the display priority and position information included in each pixel value of the first to n-th image data Image data synthesizing means, and display means for graphically displaying, via the display, a power distribution system diagram based on the synthesis result image data obtained by the synthesizing process of the image data synthesizing means.

According to the distribution system diagram display device of claim 7,
Pixels including the color information and the position information are drawn by the drawing means on the pixel areas corresponding to the position information in the n frame image data holding units corresponding to the screen of the display by the first to n-th graphic data. The first to n-th image data having values are obtained. Then, the first to n-th image data are synthesized by the image data synthesizing unit based on the display priority and the position information included in each pixel value of the first to n-th image data to obtain synthesized result image data. The distribution system diagram based on the obtained synthesized result image data is graphically displayed by the display means.

According to the distribution system diagram display device of the eighth aspect, a distribution system diagram for distribution system monitoring and control is displayed in which a plurality of components such as equipment related to the distribution system are represented as a plurality of figures. In the distribution system diagram display device having the display of (1), a plurality of graphic data each having predetermined position information and color information corresponding to the plurality of components are converted into first graphic data having the lowest display priority to N-th display priority (n is an integer of 2 or more)
Storing means for classifying and storing the first to n-th graphic data as pixel data corresponding to the position information in n frame image data holding units corresponding to the screen of the display; A drawing unit that obtains first to n-th image data having pixel values including the color information and the position information by performing drawing, respectively, and a position information included in each pixel value of the second to n-th image data. A second to an n-th mask image that masks only pixel regions in which the second to the n-th graphic data exist on the (n-1) frame image data holding units corresponding to the screen of the display based on the Creating means for creating data, and the first to n-th image data and the second to n-th mask image data are Image data synthesizing means for synthesizing in accordance with the display priority, and display means for graphically displaying, via the display, a distribution system diagram based on the synthesis result image data obtained by the synthesizing process of the image data synthesizing means. I have.

According to the distribution system diagram display device of claim 8,
Pixels including the color information and the position information are drawn by the drawing means on the pixel areas corresponding to the position information in the n frame image data holding units corresponding to the screen of the display by the first to n-th graphic data. The first to n-th image data having values are obtained. In addition, based on the position information included in each pixel value of the second to n-th image data, the creation unit may send the second to the second to the (n-1) frame image data holding units corresponding to the screen of the display. The second to the n-th mask image data for masking only the pixel area where the n graphic data exists are created.

Then, by the image data synthesizing means,
The first to n-th image data and the second to n-th mask image data are combined according to the display priority to obtain combined result image data, and a distribution system diagram based on the combined result image data is displayed. Graphically displayed via the means.

[0055]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a distribution system diagram display apparatus according to the present invention.

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a diagram showing functional blocks of a power distribution system diagram display device 1 according to this embodiment. The distribution system diagram display device 1 shown in FIG. 1 converts graphic data (graphic data representing each equipment and each component of a street map) constituting a distribution system diagram into two types based on two levels of display priorities. It is divided and memorized.

That is, the power distribution system diagram display device 1 displays, from among the graphic data constituting the power distribution system diagram, graphic data (first graphic data) having a low display priority such as a street symbol, a municipal name, and a distribution line symbol. , Color information and brightness (shading) information (hereinafter referred to collectively as color information and brightness information) indicating a position in the power distribution system diagram indicating a position where the symbol is arranged, a system status of the symbol, and the like. First power distribution system data storage unit 2 for storing as data having
a1 and, among the graphic data, graphic data (second graphic data) having a high display priority, such as a switch symbol, a customer name, and a distribution line name, are stored as data having position information and color information. 2 distribution system data storage unit 2a2.

The first and second graphic data are set in advance by a data setting unit (not shown) according to the state of the power distribution system, and are stored in the first power distribution system data storage unit 2a1 and the second power distribution system data storage unit 2a2. The color information of the graphic data representing each equipment in the first and second graphic data is rewritable via the data setting unit in accordance with a change in system state.

The power distribution system diagram display device 1 reads the first graphic data stored in the first power distribution system data storage unit 2a1, and based on the position information and color information of the first graphic data, reads out the first graphic data. The color information of the first graphic data is
For example, as frame image data (first image data) consisting of pixel data having a pixel value of 8-bit gradation, the frame information corresponds to the position information in the first image data holding unit 3a1 having a frame image storage area such as a frame memory. The first figure data drawing unit 4a1 for drawing on a predetermined pixel to be drawn and the second figure data stored in the second power distribution system data storage unit 2a2 are read, and based on the position information and color information of the second figure data. The color information of the second graphic data is, for example, 8
As frame image data (second image data) composed of pixel data having a pixel value of a bit gradation, a predetermined value corresponding to the position information in the second image data holding unit 3a2 having a frame image storage area such as a frame memory. The second to draw on the pixels of
A graphic data drawing section 4a2.

Then, the power distribution system diagram display device 1 of this configuration
Is the second distribution data stored in the second distribution system data storage unit 2a2.
Of the second mask image data holding unit 3m based on the read second figure data.
By writing “pixel value“ 1 ”” to all pixels corresponding to the area where the second graphic data exists in 2, the second graphic data exists in the second mask image data holding unit 3m2. Image data that masks (holds and extracts) only the pixel area, that is, a mask in which only the pixel value of the pixel area where the second graphic data exists is “1” and the pixel values of the other pixels are “0” A mask image data drawing section 4m2 for drawing image data for masking.

Further, the power distribution system diagram display device 1 includes the first image data holding unit 3a1 to the first image data and second image data holding unit 3 related to the first graphic data.
a2, the second image data relating to the second graphic data and the mask image data from the mask image data holding unit 3m2 are read out, and the first image data, the second image data, and the mask image data are read out. An image data synthesizing unit 5 for synthesizing each pixel in accordance with the display priority is provided. The image data synthesizing unit 5 converts the synthesized result image data obtained as a result of the synthesizing process into a synthesized result image in a frame memory or the like. The data is written in the data holding unit 6.

The power distribution system diagram display device 1 includes, for example, a sequential scanning section 7 for sequentially reading the synthesis result image data held in the synthesis result image data holding section 6 and a synthesis result read for the sequential scanning. A color conversion circuit 8 for converting image data into color data of a maximum of 255 (2 ⁸ -1) colors in accordance with the value of each pixel data (8-bit gradation), and data converted into color data A D / A conversion unit 9 for D / A conversion of
A display unit 11 having a color display 10 for displaying analog color data D / A converted by the D / A conversion unit 9 in color is provided.

Note that the first figure data drawing section 4a1 and the second figure data
The graphic data drawing unit 4a2, the mask image data drawing unit 4m2, and the image data synthesizing unit 5 are a control arithmetic circuit including an image processor and a microcomputer, and control software necessary for control arithmetic processing of the control arithmetic circuit. Are embodied by combining a memory or the like for storing the information.

Next, the operation processing executed by the power distribution system diagram display apparatus 1 of this configuration will be described, focusing on the processing of the image data synthesizing unit 5 in particular.

When the power distribution system diagram display apparatus 1 of this configuration starts execution of the power distribution system diagram creation and display process, the first graphic data drawing unit 4a1 and the second graphic data drawing unit 4a2 start the drawing process, and the mask image The data drawing section 4m2 starts the mask image data drawing processing.

That is, the first graphic data drawing section 4a1 stores the first distribution data stored in the first distribution system data storage section 2a1.
Is read out and written into predetermined pixels of the first image data holding unit 3a1 as 8-bit pixel data (first image data). The second figure data F2 stored in the second power distribution system data storage section 2a2 is read out by the second figure data drawing section 4a2, and the second image data F2 is stored as 8-bit pixel data (second image data). The data is written to a predetermined pixel of the holding unit 3a2.

Here, the first image data holding unit 3a1
It is assumed that, for example, black and horizontal linear first graphic data F1 representing a distribution line symbol is written as a first image data I1 having a low display priority in a certain pixel area P. An area including at least a part of the pixel area P corresponding to the pixel area P of the second image data holding unit 3a2, that is, at least a part of the area where the graphic data F1 of the first image data I1 exists. Assume that, as the second image data I2 having a high display priority, for example, second graphic data F2 having a black circular shape representing a switch symbol and the inside thereof being filled with white is written (see FIG. 2). Note that in FIG. 2, for simplicity, the pixel value simply has 1-bit information, and the pixel value “0” is expressed as white in the figure, and the pixel value “1” is expressed as black in the figure. Is done).

On the other hand, the mask image data drawing section 4m
2, the second graphic data F2 stored in the second distribution system data storage 2a2 is read out, and based on the position information contained in the second graphic data F2, the second mask image data storage 2 is read. In 3m2, only the pixel value of the pixel area where the second graphic data F2 is present is "1" and the pixel values of the other pixels are "0", i.e., only the circular symbol portion is "1". And the other portion is "0", and the mask image data IM2 (image data IM2 for masking only the pixel region of the circular symbol portion) is drawn (see FIG. 2).

At this time, the image data synthesizing section 5 performs the processing shown in FIG. That is, the image data synthesizing unit 5 includes the second mask image data holding unit 3m.
2 is read from the mask image data IM2, and the pixel value of each pixel of the read mask image data IM2 is set to the one's complement of the pixel value, that is, the pixel value of the current “1” is set to “0”, The pixel value of “0” is inverted to “1”. As a result, image data in which the pixel value where the second graphic data F2 exists, that is, only the pixel value of the circular symbol portion is "0", and the pixel values of all the pixels outside the circular symbol are "1" IM2a, in other words, the second graphic data F2
The mask pattern data IM2a for masking all the pixel areas other than the above is created (step S1, see FIG. 2).

Subsequently, the image data synthesizing section 5 sends the first image data I from the first image data holding section 3a1.
1 is read, and the read first image data I
1 and the image data IM2a, that is, the first
Is performed for each corresponding bit between the pixel value of each pixel of the image data I1 and the pixel value of the corresponding pixel of the image data IM2a. Now, in the image data IM2a, only the pixel value of the circular symbol portion where the second graphic data F2 exists is "0", and the pixel values of the other pixels are "1". The result of the logical product with the first image data I1 including the first graphic data F1 which is a symbol is obtained in the pixel area where the first graphic data F1 (linear symbol) in the first image data I1 is stored. The pixel value of the pixel area where the second graphic data F2 (circular symbol portion) overlaps is "0", and the pixel values of the other pixels are the original first image data I1.
The same image data Is (see FIG. 2) is obtained (step S2).

Next, the image data synthesizing section 5 outputs the second
The second image data I2 is read from the image data holding unit 3a2, and the logical sum of the read second image data I2 and the image data Is, that is, the second
Is performed for each corresponding bit between the pixel value of each pixel of the image data I2 and the pixel value of the corresponding pixel of the image data Is. Now, in the image data Is, the pixel value of only the pixel area where the second graphic data F2 is stored is "0", and the pixel values of the other pixel areas are the same as the original first image data I1. Therefore, this image data Is and the second
The result of the logical OR with the image data I2 of
The graphic data F2 of the second image data I2 is stored in the pixel area where the pixel value "0" is set in the processing of step 2.
(Circular symbol part) is drawn (stored) as a pixel value
That is, synthesized image data Ic obtained by synthesizing the pixel area where the first graphic data F1 is drawn with the second graphic data F2 having a higher display priority so as to overwrite the pixel area where the first graphic data F1 is drawn (FIG. 2) is obtained (step S3).

Then, the image data synthesizing section 5 generates the synthesized image data Ic obtained by the processing in step S3.
By setting the pixel value of each pixel of the corresponding pixel in the synthesis result image data holding unit,
The contents of the composite image data Ic can be copied to the composite result image data holding unit 6 (step S).
4).

As described above, the first graphic data F1 having a low display priority and the second graphic data F2 having a high display priority are obtained by the image data synthesizing process of the above-described steps S1 to S4 of the image data synthesizing section 5. In the overlapping pixel area, the composite image data Ic in which the second graphic data F2 is always displayed with priority over the first graphic data F1 is obtained in the composite result image data holding unit 6. The synthesized result image data Ic is displayed on the display unit 11.
Are read from the synthesis result image data holding unit 6 through the sequential scanning unit 7 and converted into analog color data through the color conversion circuit 8 and the D / A conversion unit 9,
Are displayed in color by the color display 10 as a distribution system diagram having the display colors of

At this time, the first and second graphic data F1
, F2 are superimposed on each other, when the system state of the equipment corresponding to the first graphic data F1 having a lower display priority changes, the first graphic data drawing unit 4a1 responds to the change. Image data holding unit 3a
1, the first graphic data F1 is drawn again as the first graphic data F1 'representing the system state after the change, and the first image data I1 relating to the redrawn first graphic data F1' is drawn. By simply performing the above-described image data synthesis processing in steps S1 to S4 using the ', the synthesized image data Ic' corresponding to the change in the state of the first graphic data can be obtained, and based on the synthesized image data Ic ' Thus, the distribution system diagram can be updated and displayed via the color display 10 of the display unit 11.

That is, according to the present configuration, even if the system state of the equipment corresponding to the first graphic data having the lower display priority changes, the equipment corresponding to the equipment having the higher display priority with no change in the state can be handled. Since there is no need to redraw the second graphic data, graphic data display update processing corresponding to a change in system state can be performed speedily and efficiently while maintaining the display priority.

In particular, since the synthesizing process of the image data synthesizing unit 5 can be executed in a fixed processing time regardless of the content of the image data, the display density of the equipment in the distribution system is high, and the corresponding graphic data is not displayed. Even in a complicated and dense area, the synthesis processing can be performed in a fixed processing time. On the other hand, in the case where the conventional graphic data is redrawn, if the graphic data corresponding to the equipment is superimposed in a dense state, it takes a very long time to redraw. Therefore, in the present configuration, the greater the components and equipment of the street map forming the power distribution system diagram are arranged in a complicated and dense manner, the greater the effect of reducing the processing time is obtained.

Further, according to the present configuration, each component of the street diagram represented as the distribution system diagram and the distribution system equipment are set in the range (8 bits) in which the pixel value of each pixel of the image data holding unit can take. All combinations (255
(Gray scale), it is possible to express on a color display, so that the visibility of the distribution system diagram can be maintained at a high level.

In the first embodiment, the graphic data constituting the power distribution system diagram is divided into two types based on two levels of display priority and stored. However, the present invention is not limited to this. .

For example, as a modification of the first embodiment, 3
FIG. 4 shows a configuration of a distribution system diagram display device 20 in which graphic data constituting a distribution system diagram is divided into three types and stored based on the display priorities of the stages.

According to FIG. 4, the distribution system diagram display device 20
Is a first power distribution system data storage unit 2a1 for storing graphic data (first graphic data) having the lowest display priority among the graphic data constituting the power distribution system diagram, and a second display data among the graphic data. A second power distribution system data storage unit 2a2 for storing high-priority graphic data (second graphic data)
And a third power distribution system data storage unit 2a3 for storing graphic data having the highest display priority (third graphic data) among the graphic data.

Further, similarly to the first embodiment, the power distribution system diagram display device 20 reads out the first graphic data stored in the first power distribution system data storage unit 2a1, and reads the first graphic data having the 8-bit gradation. A first graphic data drawing unit 4a for drawing in the first image data holding unit 3a1 as image data of
1 and the second graphic data stored in the second power distribution system data storage 2a2 and read out in the second image data storage 3a2 as the second image data having a gradation of 8 bits. The drawing unit 4a2 and the second
The second image data stored in the distribution system data storage unit 2a2 is read out, and the second mask image data relating to the second image data is stored in the second mask image data storage unit by the same processing as in the first embodiment. A second mask image data drawing section 4m2 for drawing on 3m2.

Then, the distribution system diagram display device 20 of this configuration
Is the third data stored in the third distribution system data storage unit 2a3.
Is read, and the third figure data is
And a third graphic data holding section 4a3 for drawing in the third image data holding section 3a3 as third image data having an 8-bit gradation by the same operation as the second graphic data drawing sections 4a1 and 4a2. The third figure data stored in the power distribution system data storage section 2a3 is read out, and the position corresponding to the third figure data in the third mask image data holding section 3m3 is determined based on the third figure data. By writing "pixel value" 1 "" for all pixels, only the pixel value at the position where the third graphic data exists in the third mask image data holding unit 3m3 is "1", And a third mask image data drawing section 4m3 for drawing the third mask image data whose pixel value is "0".

Further, the distribution system diagram display device 20 is provided with the first
The first image data relating to the first graphic data from the image data retaining unit 3a1, the second image data relating to the second graphic data from the second image data retaining unit 3a2, and the image data retaining unit for the second mask. 3m2
, Respectively, and reads the first image data, the second image data, and the second mask image data for each pixel in accordance with the display priority. From the third image data holding unit 3a3 to the third
And the third mask image data is read from the third mask image data holding unit 3m3, and the intermediate combined result image data obtained by the combining process of the intermediate image data combining unit 5A1,
An image data synthesizing unit 5A2 for synthesizing the third image data and the third mask image data for each pixel according to the display priority, and the image data synthesizing unit 5A2 is obtained by the synthesizing process. The synthesized result image data is written into the synthesized result image data holding unit 6.

The power distribution system diagram display device 20 includes a display unit 11 for reading out the second combined result image data held in the combined result image data holding unit 6 and performing color conversion via a color display after color conversion. ing. Note that functional blocks that perform substantially the same operation processing as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted or simplified.

According to this configuration, similar to the first embodiment,
The first graphic data drawing section 4a1 and the second graphic data drawing section 4
a2 and the second image data drawing unit 4m2 process the first image data I1 in the first image data holding unit 3a1, the second image data I2 in the second image data holding unit 3a2, and the mask image data. In the portion 3m2, the second mask image data IM2 is drawn.

Further, the third image data holding unit 4a3 and the third mask image data drawing unit 4m3 process the third image data holding unit 3a3 into the third image data I3 and the third mask image data holding unit 3m3. The third mask image data IM3 is drawn.

At this time, the intermediate image data synthesizing section 5A
By performing the same processing as in steps S1 to S3 in FIG. 3 described above, the second graphic data F2 having a higher display priority is overlaid on the pixel area where the first graphic data F1 is drawn. The obtained intermediate composite image data IH is obtained.

Subsequently, the intermediate image data synthesizing section 5A1
Transmits the obtained intermediate combined image data IH to the image data combining unit 5A2 (FIG. 5, step S1).
0).

At this time, the image data synthesizing section 5A2
From the third mask image data holding unit 3m3 to the third
The mask image data IM3 is read, and the pixel value of each pixel of the read third mask image data IM3 is inverted (step S11).

Next, the image data synthesizing unit 5A2 executes a logical product for each corresponding bit between the intermediate synthesized image data IH transmitted from the intermediate image data synthesizing unit 5A1 and the image data IM3a obtained by the inversion processing. As a result, in the intermediate composite image data IH, the pixel value of the pixel area where the third graphic data F3 overlaps becomes "0", and the pixel values of the other pixels are the same image data Is2 as the original intermediate composite image data IH. Obtained (Step S12).

The image data synthesizing section 5A2 sends the third image data I3 from the third image data holding section 3a3.
, And the read third image data I3
And the image data Is2. As a result, the graphic data F3 of the third image data I3 is drawn (stored) as a pixel value in the pixel area where the pixel value "0" is set in the process of step S12, that is, the first graphic data F1 And the second F2
Are synthesized so that the third graphic data F3 having a higher display priority is overwritten on the pixel area where is drawn (step S1).
3).

Then, the image data synthesizing section 5A2
As in step S4, the contents of the combined image data Ic2 obtained by the processing in step S13 are copied to the combined result image data holding unit 6 (step S14).

As described above, the first graphic data F1 and the second graphic data F2 having three levels of display priorities are determined.
, And the third graphic data F3 overlap each other, the third graphic data F3 having the highest display priority is always displayed preferentially with respect to the other graphic data F1 and F2, and the first graphic data F3 is displayed. In the pixel area where the data F1 and the second graphic data F2 overlap, the composite image data Ic2 in which the second graphic data F2 is displayed preferentially with respect to the first graphic data F1 is stored in the composite result image data holding unit 6. Is obtained. Then, the obtained synthesized result image data Ic2 is displayed on the display unit 11 as in the first embodiment.
Is displayed in color as a distribution system diagram having 255 display colors.

Therefore, for example, in the pixel area where the first to third graphic data are superimposed, if the system state of the equipment corresponding to, for example, the first graphic data F1 having a lower display priority is changed, the change is made. , The first graphic data drawing unit 4a1 causes the first image data holding unit 3
The first graphic data F1 is drawn again as the first graphic data F1 'representing the system state after the change with respect to a1, and the first image data I1 relating to the redrawn first graphic data F1' is drawn. ', The intermediate composite image data creation processing in steps S1 to S4 described above, and steps S10 to S4.
Only by executing the image data synthesizing process in S14, the synthesized image data I according to the state change of the first graphic data is obtained.
c2 ', and the composite image data Ic2'
, The power distribution system diagram can be updated and displayed via the display unit 34.

That is, according to the present configuration, even if the system state of the equipment corresponding to the first graphic data having the lower display priority changes, the equipment having the higher display priority has no change in the state. Since there is no need to redraw the corresponding second graphic data and third graphic data again, the priority relationship of the display priority (third graphic data> second graphic data> first graphic data) is maintained. In this state, the graphic data display update processing corresponding to the change in system state can be performed speedily and efficiently. Similarly, even if the system state of the equipment corresponding to the second graphic data changes, there is no need to redraw the third graphic data corresponding to the equipment having a high display priority and having no state change. Therefore, substantially the same effect can be obtained.

Further, in the present configuration, as in the first embodiment, the synthesizing process of the intermediate image data synthesizing unit 5A and the image data synthesizing unit 5A2 can be executed in a fixed processing time regardless of the contents of the image data. Therefore, the greater the so-called display density in which the components and equipment of the street map forming the distribution system diagram are arranged in a complicated and dense manner, the greater the effect of reducing the processing time is obtained.

Also in this configuration, as in the first embodiment, a street map represented as a distribution system diagram using all combinations (255 gradations) of the range in which the pixel value of each pixel of the image data can take. Each component and the distribution system equipment can be displayed in color, so that the visibility of the distribution system diagram can be maintained at a high level.

In particular, in the present configuration, the second graphic data having the second lowest display priority and the third graphic data having the highest display priority
And the graphic data of the second
a2, drawing in the third image data holding unit 3a3 and, based on the second graphic data, the second mask image data in the second mask image data holding unit 3m.
2 and the third mask image data is stored in the third mask image data holding unit 3 based on the third graphic data.
When the display color of the second graphic data is updated in accordance with a change in the system state of the equipment corresponding to the second graphic data, the second graphic data drawing unit 4a2 performs the drawing. Only the second graphic data held in the second image data holding unit 3a2 needs to be redrawn.
There is no need to redraw the third graphic data held in the third image data holding unit 3a3. At this time, since the display position of the second graphic data remains unchanged only by changing the display color, the second mask image data holding unit 3
There is no need to update the held content of m2.

By the way, the display priority is not limited to the above-described two levels or three levels, but can be set to a desired level according to the number and positional relationship of each component of the street map and the distribution system equipment. is there.

As shown in FIG. 1, when the display priority n = 2, the image data synthesizing section 5A2 based on the first to n-th image data and the n-th mask image data.
In the case where the display priority n = 3, the data obtained by the image data synthesizing process (first time) of the intermediate image data synthesizing unit 5A1 is converted to the first image data. (N-1 = 1) intermediate image data, and an image data synthesizing unit 5A2 based on the first intermediate image data, the (n = 2) th image data and the (n = 2) th mask image data The second image data synthesis processing, that is,
Conveniently, synthesized image data is obtained by "n-1 = 2 times" image data synthesizing processing.

That is, as shown in FIG. 6, according to the distribution system diagram display device 25 in the case where the display priority is n (n is an integer of 3 or more), the same processing as in the first embodiment is performed. 1st to nth distribution system data storage units 2a1 to 2an
The first to n-th graphic data are stored in the first to n-th graphic data by the first to n-th graphic data drawing units 4a1 to 4an in the first to n-th image data holding units 3a1 to 3an. Based on the first to n-th image data I1 to In
Are drawn respectively. Then, the second to n-th mask image data drawing units 4m1 to 4mn cause the second to n-th mask image data holding units 3m2 to 3mn to store the second data.
To n-th mask image data IM2 to IMn, respectively.

At this time, the first image data synthesizing section 5A
1 is an image data synthesizing process based on the first image data I1, the second image data I2, and the second mask image data IM2, and converts the first and second image data I1 and I2 according to the display priority. The combined intermediate stage image data Ic2 is created, and the k-th image data combining unit 5Ak (k = 2,3,.
The intermediate stage image data Ick obtained by the synthesis processing of the image data synthesis unit 5A (k-1), the (k + 1) th image data Ik + 1, and the (k + 1) th image data for mask IM (k + 1) Are combined by image data combining processing to create intermediate stage image data Ic (k + 1).

The (n-1) th image data synthesizing unit 5An-1 is connected to the (n-2) th image data synthesizing unit 5A.
Intermediate-stage image data Ic (n-1) obtained by synthesizing the first to (n-1) th image data I1 to I (n-1) obtained by the n-2 synthesis processing according to the display priority. And the n-th image data In and the n-th mask image data IMn by an image data synthesizing process, and the intermediate stage image data Ic (n-1) is combined with the n-th image data Ic (n-1).
n is overwritten, that is, synthesized result image data Icn obtained by synthesizing the first to n-th image data I1 to In according to the display priority can be obtained through the synthesized result image data holding unit 6. , Can be displayed by the display unit 11.

As described above, no matter how many levels of display priority are set, graphic data display update processing corresponding to a change in system state can be performed speedily and efficiently while maintaining the display priority.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIGS.

FIG. 7 is a diagram showing functional blocks of the distribution system diagram display device 30 of the present embodiment.

According to FIG. 7, the power distribution system diagram display device 30
As in the modification of the first embodiment (FIG. 4), graphic data constituting the power distribution system diagram is displayed based on three levels of display priority.
It is divided into types and stored. That is, the distribution system diagram display device 30 includes, among graphic data constituting the distribution system diagram,
The first for storing the first graphic data having the lowest display priority
Distribution system data storage unit 2a1 and two of its graphic data
A second power distribution system data storage unit 2a2 for storing the second graphic data having the second highest display priority, and a third power distribution system data for storing the third graphic data having the highest display priority among the graphic data. And a storage unit 2a3.

Further, the distribution system diagram display device 30 is provided with the first
As in the embodiment (FIG. 1) and its modification (FIG. 4), the first graphic data stored in the first power distribution system data storage unit 2a1 is read out, and the first image data having an 8-bit gradient is read out. The first figure data drawing section 4a1 for drawing in the first image data holding section 3a1 and the second figure data stored in the second distribution system data storage section 2a2 are read out, and a second figure having an 8-bit gradation is read out. The second figure data drawing section 4a2 for drawing in the second image data holding section 3a2 as image data and the second figure data stored in the second power distribution system data storage section 2a2 are read out, and the second figure data is read. A second mask image data drawing unit 4m2 for drawing the second mask image data in the second mask image data holding unit 2m2, and a third power distribution system data storage unit 2a3 A third graphic data drawing unit 4a3 for reading the third graphic data stored in the third image data and drawing the third graphic data as third image data having an 8-bit gradation in the third image data holding unit 3a3; The third figure data stored in the section 2a3 is read, and the third mask image data relating to the third figure data is rendered in the third mask image data holding section 3m3. And

The distribution system diagram display device 30
The second image data relating to the second graphic data from the image data retaining unit 3a2, the third image data relating to the third graphic data from the third image data retaining unit 3a3, and the image data retaining unit 3m3 for the third mask. Read out the third mask image data from
The second image data, the third image data, and the third mask image data are combined for each pixel in accordance with the display priority to generate combined intermediate stage image data (hereinafter, simply referred to as image data Ir). And an intermediate stage image data synthesizing unit 32 which holds the image data in the synthesizing intermediate stage image data holding unit 31 and the second mask image data and the third mask image data holding unit 3m3 from the second mask image data holding unit 3m2. Third
Are read out, and the second mask image data and the third mask image data are synthesized for each pixel, and synthesized intermediate stage mask image data (hereinafter simply referred to as mask image data Irm). And a mask image data synthesizing unit 34 for generating the image data in the synthesizing intermediate stage mask image data holding unit 33.

Further, the distribution system diagram display device 30 is provided with the first
The first image data relating to the first graphic data from the image data holding unit 4a1, the image data Ir from the combining intermediate stage image data holding unit 31, and the masking image data Irm from the combining intermediate stage masking image data holding unit 33 are stored. An image data synthesizing unit 35 for reading and synthesizing the first image data, the image data Ir and the mask image data Irm by a logical operation is provided.
Numeral 5 writes the composite result image data obtained by the compositing process into the composite result image data holding unit 6.

The power distribution system diagram display device 30 includes a display unit 11 for reading out the synthesis result image data held in the synthesis result image data holding unit 6 and performing color conversion via a color display after color conversion.
Note that functional blocks that perform substantially the same operation processing as in the first embodiment (including modified examples) are given the same reference numerals, and descriptions thereof are omitted or simplified.

Next, the operation processing executed by the distribution system diagram display device 30 of this configuration will be described focusing on the processing of the intermediate stage image data synthesizing section 32, the mask image data synthesizing section 34, and the image data synthesizing section 35. .

According to this configuration, similar to the first embodiment,
The first graphic data drawing section 4a1 and the second graphic data drawing section 4
a2 and the second image data drawing unit 4m2 process the first image data I1 in the first image data holding unit 3a1 and the second image data I2 and the mask image data holding unit in the second image data holding unit 3a2. The second mask image data IM2 is written in 3m2. The third graphic data drawing unit 4a
The third image data holding unit 3a3 stores the third image data I3 and the third mask image data holding unit 3a3 in the third image data holding unit 3a3 by the processing of the third and third mask image data drawing unit 4m3.
The third mask image data IM3 is written in m3.

As shown in FIG. 8, black and horizontal linear first graphic data F1 is written as first image data I1 in the first image data holding unit 3a1, and the second image data holding unit 3a2, as the second image data I2, an area at least partially overlapping with the portion of the first image data I1 where the graphic data F1 exists.
For example, it is assumed that second graphic data F2 having a black circular shape and the inside thereof is filled with white is written. The third image data holding section 3a3 stores black and vertical image data as third image data I3 in an area where at least a part of the first and second image data I1 and I2 overlaps the existing portions of the graphic data F1 and F2. It is assumed that the linear third graphic data F3 has been written. In FIG. 8, for simplicity, it is assumed that the pixel value has only 1-bit information, the pixel value “0” is expressed as white in the figure, and the pixel value “1” is expressed as black in the figure. ).

In the second mask image data holding unit 3m2, as the mask image data IM2, only the circular symbol portion is "1" and the other portions are "0". The third mask image data holding unit 3m3 holds the mask image data IM3 in which only the linear symbol portion is "1" and the other portions are "0" as the mask image data IM3.

At this time, the intermediate-stage image data synthesizing section 32 reads the third mask image data IM3 from the third mask image data holding section 3m3, and reads out each pixel of the read third mask image data IM3. The value is inverted (FIG. 9; step S31).

Next, the intermediate stage image data synthesizing section 32
Reads out the second image data I2 from the second image data holding unit 3a2, and reads the second image data I2.
By performing a logical AND for each corresponding bit between 2 and the image data IM3a obtained by the inversion processing,
In the second image data I2, the pixel value of the pixel area where the graphic data F3 of the third image data overlaps is "0", and the pixel values of the other pixels are the same as the original second image data I2.
Is obtained (step S32).

Then, the intermediate stage image data synthesizing section 32
Reads out the third image data I3 from the third image data holding unit 3a3, executes a logical sum of the read third image data I3 and the image data Is3, and outputs the pixel value "0" in the processing of step S32. Are drawn as pixel values of the graphic data F3 of the third image data I3 in the pixel area in which "" is set, that is, the image data having the higher display priority with respect to the pixel area in which the second graphic data F2 is drawn. Image data Ir obtained by combining the graphic data F3 of FIG.
Is obtained (step S33). The intermediate stage image data synthesizing section 32 holds the contents of the obtained image data Ir in the synthesizing intermediate stage image data holding section 31 (step S34; see FIG. 8).

On the other hand, the mask image data synthesizing section 34
From the second mask image data holding unit 3m2 to the second
The mask image data IM2 is transferred from the third mask image data holding unit 3m3 to the third mask image data I2.
M3 is read out, and a logical OR for each corresponding bit is performed between the second mask image data IM2 and the third mask image data IM3 to generate mask image data Irm, and the image data for the intermediate intermediate stage mask is generated. The image data is stored in the image data storage unit 33 (step S35; see FIG. 8).

At this time, the image data synthesizing unit 35
The image data for mask Irm is read out from the image data holding unit for mask for intermediate stage 33, and the pixel value of each pixel of the read image data for mask Irm is inverted. As a result, the mask image data I
The mask image in which only the pixel value of the pixel area P (F2, F3) where the second and third graphic data F2, F3 exist in rm is "0" and the pixel values of the other pixels are "1" Data Irm 'is created (step S36).

Next, the image data synthesizing section 35
The first image data I1 is read from the image data holding unit 3a1, and the logical product is executed for each corresponding bit between the first image data I1 and the mask image data Irm 'obtained by the inversion processing. Now, the mask image data Irm 'is a pixel area P in which the second graphic data F2 and the third graphic data F2, F3 exist.
Since only the pixel value of (F2, F3) is "0" and the pixel values of the other pixels are "1", this image data Irm 'and the first graphic data F which is a linear symbol
The result of the logical product with the first image data I1 containing the first and second graphic data F2 in the pixel area where the first graphic data F1 (linear symbol) in the first image data I1 is stored. , F3 become "0", and the other pixel values are obtained as the same image data Is4 as the original first image data I1 (step S37).

Then, the image data synthesizing section 35 reads out the image data Ir from the synthesizing intermediate stage image data holding section 31, and reads out the read image data Ir.
And the image data Is4 are ORed, and the second graphic data F2 and the third graphic data F3 (F3 (3) in the image data Ir for the pixel area in which the pixel value "0" is set in the processing of step S37. F3> F2
Are superimposed while maintaining the relationship) as pixel values, that is, the second and third graphic data F2, F2, which have a higher display priority with respect to the pixel area where the first graphic data F1 is rendered. Synthesized image data Ic3 obtained by synthesizing F3 (F3> F2) is obtained (step S38).

Next, the image data synthesizing section 35 generates the synthesized image data I obtained by the processing in step S38.
The content of c3 is copied to the synthesis result image data holding unit 6 (step S39).

In this way, the first graphic data F1 and the second graphic data F2 having three levels of display priorities are determined.
, And the third graphic data F3 overlap each other, the third graphic data F3 having the highest display priority is always displayed preferentially with respect to the other graphic data F1 and F2, and the first graphic data F3 is displayed. In the pixel area where the data F1 and the second graphic data F2 overlap, the composite image data Ic3 in which the second graphic data F2 is displayed preferentially with respect to the first graphic data F1 is stored in the composite result image data holding unit 6. Is obtained. The obtained synthesized result image data Ic3 is displayed on the display unit 11 as in the first embodiment.
Is displayed in color as a distribution system diagram having 255 display colors.

Therefore, as in the first embodiment, the first
When the system status of the equipment corresponding to the first graphic data F1 having a lower display priority changes in the superimposition region of the third graphic data, for example, the first graphic data F1 'corresponding to the change is displayed. Based on the first graphic data drawing unit 4a1
The image data Ir of steps S31 to S34 described above using the first image data I1 'redrawn by
Creation processing, mask image data I in step S35
Only by executing the rm creation processing and the image data synthesis processing in steps S36 to S39, it is possible to obtain the synthesized image data Ic3 'corresponding to the change in the state of the first graphic data, and based on the synthesized image data Ic3' Thus, the power distribution system diagram can be updated and displayed via the display unit 11.

That is, according to the present configuration, even if the system state of the equipment corresponding to the first graphic data or the second graphic data having a low display priority changes, the other display priority that has not changed is changed. Since it is not necessary to redraw the graphic data (for example, the third graphic data) corresponding to the high-level equipment, the graphic data display update processing corresponding to the system state change while maintaining the priority relation of the display priority is maintained. Can be performed quickly and efficiently.

Further, as in the first embodiment, since the intermediate image data synthesizing unit and the synthesizing process of the image data synthesizing unit can be executed in a fixed processing time, the components of the power distribution system diagram (the configuration of the street diagram) The greater the complexity and density of the components and equipment, the greater the effect of reducing the processing time. Further, similarly to the first embodiment,
Since the components of the distribution system diagram can be represented on the color display in 255 gradations, the visibility of the distribution system diagram can be maintained at a high level.

According to the structure of this embodiment, the first
Even in the case where the image data combining process is executed according to the frequent change in the system state of the equipment corresponding to the first graphic data stored in the distribution system data storage unit 2a1, the second graphic data and the third graphic data The combined intermediate-stage image data and the combined intermediate-stage mask image data are created on the basis of the graphic data, the second mask image data, and the third mask image data regardless of the first graphic data. Since the image data is held in the holding unit 31 and the image data holding unit 33 for the synthesis intermediate stage mask, the image data synthesizing unit 35
Using the combined intermediate stage image data and the combined intermediate stage mask image data, image data combining processing due to a change in the state of the first graphic data can be performed. That is, in the present configuration, when only the first graphic data changes state, the second and third graphic data stored in the second and third image data storing units 3a2 and 3a3 are combined with the second and third graphic data. Since there is no need to combine the second and third mask image data held in the mask image data holding units 3m2 and 3m3, the entire image data combining processing time and display update processing time can be reduced. it can.

In this configuration, as in the modification of the first embodiment, the display color of the second graphic data is updated according to a change in the system state of the equipment corresponding to the second graphic data. In this case, only the second image data is redrawn in the second image data holding unit 3a2 in accordance with the second graphic data F2 'representing the display color after updating by the second graphic data drawing unit 4a2. The intermediate image data synthesizing section 32 redraws the second image data and the third image data held in the third image data holding section 3a3.
The third image data held in the third image data holding unit 3a3 has been synthesized based on the third image data held in the third image data holding unit 3a3 and the third mask image data held in the third mask image data holding unit 3m3. Need not be redrawn.

At this time, since the display position of the second graphic data remains unchanged only by changing the display color,
There is no need to update the contents held in the mask image data holding unit 3m2, and the combining intermediate stage mask image data holding unit 33 based on the mask image data combining unit 34.
There is no need to update the contents of the file. Therefore, the entire image data synthesizing process and the display updating process can be performed more speedily.

In the present embodiment as well, the display priority is not limited to the three stages described above, but may be set to a desired stage according to the number and positional relationship of each component of the street map and the distribution system equipment. It is possible.

That is, as shown in FIG. 10, when the display priority is in n stages (n is an integer of 4 or more), the first to n-th image data holding units 3a1 to 3an are provided as in FIG.
The first to n-th image data I1 to In based on the first to n-th graphic data are respectively drawn, and the second to n-th mask image data are stored in the second to n-th mask image data holding units 3m2 to 3mn. Data IM2 to IMn are respectively drawn.

At this time, the second image data synthesizing section 32
A2 converts the second and third image data I2 and I3 in accordance with the display priority by an image data synthesizing process based on the second image data I2, the third image data I3 and the third mask image data IM3. The combined intermediate stage image data Ic3 is created, and the k-th image data combining unit 32Ak (k = 3, 4,..., N-2)
Are the (k-1) th intermediate image data Ick and the (k + 1) th image data Ik + 1 obtained by the combining processing of the (k-1) th image data combining section 32A (k-1).
And the (k + 1) -th mask image data IM (k + 1) by image data synthesis processing to create intermediate stage image data Ic (k + 1).

The (n-1) th image data synthesizing section (intermediate stage image data synthesizing section) 32A (n-1)
The second to (n-1) th image data I2 to I (n-1) obtained by the combining process of the (n-2) th image data combining section 32A (n-2) are determined according to the display priority. The intermediate stage image data Ic (n-1) combined with the n-th image data In and the n-th mask image data IMn are combined by image data combining processing, and the second to n-th image data I2. Combined intermediate stage result image data Ir composed of In in accordance with the display priority is created.

On the other hand, the mask image data creating section 34
Are the second to n-th mask image data holding units 3m2 to 3m2 to
Image data Irm for the intermediate stage mask is created by synthesizing the image data IM2 to IMn for the second to nth masks respectively drawn on 3mn.

Then, the image data synthesizing section 35 and the first image data I1 drawn in the first image data holding section 3a1 and the intermediate stage image data synthesizing section 32A
The combining intermediate stage result image data Ir created by (n-1) and the combining intermediate stage mask image data Irm created by the mask image data creating unit 34 are combined by image data combining processing, and the first The image data I1 is combined with the intermediate image data I
It is possible to obtain image data overwritten with r, that is, synthesized result image data Icn obtained by synthesizing the first to n-th image data I1 to In according to the display priority.

As described above, regardless of the display priority, the graphic data display updating process corresponding to the change in the system state can be performed speedily and efficiently while maintaining the display priority.

(Third Embodiment) FIG. 11 is a diagram showing functional blocks of a distribution system diagram display device 40 of the present embodiment.

According to FIG. 11, the distribution system diagram display device 40
Stores graphic data constituting a distribution system diagram divided into four types based on four levels of display priority. In other words, the distribution system diagram display device 40 displays graphic data constituting the distribution system diagram in two types of graphic data according to the degree of importance in supervisory control and the degree of recognition of the supervisory control operator. First figure data F1 (distribution line symbol, street symbol,
Municipal names, etc.) and second graphic data F2 (switch symbols, switch names, etc.), which have a high degree of importance and are difficult to identify unless they are displayed preferentially. Of these, graphic data (street symbols, street symbols,
The first A distribution system data storage unit 41 uses the name of the municipalities, etc.) as graphic data (graphic data F1A) having the lowest display priority.
A is stored in advance.

Then, of the graphic data F1, the graphic data having higher importance and higher display update frequency than the graphic data F1A is stored as the graphic data F1B having the third highest display priority in the first B distribution system data storage section 41B. Saved in advance.

On the other hand, of the second graphic data F 2, graphic data (low display update frequency) having a low importance and having little display update corresponding to a change in the state of the corresponding equipment or street map component (low display update frequency) Switch names, etc.) are stored in advance in the 2A distribution system data storage section 42A as graphic data (graphic data F2A) having the second highest display priority, and the second graphic data F2 is more important than the graphic data F2A. The graphic data (switch symbol etc.) with a high degree of display and high display update frequency are stored in advance in the second B distribution system data storage unit 42B as graphic data with the highest display priority (graphic data F2B).

The power distribution system diagram display device 40 is provided with a
Graphic data F stored in the distribution system data storage unit 41A
1A, and based on the position information and color information of the graphic data F1A, the color information of the graphic data F1A is converted to first pixel data P having a pixel value of 8-bit gradation.
1A is drawn on a predetermined pixel corresponding to the position information in the first image data holding unit 43a1, and the figure data F1B stored in the 1B distribution system data storage unit 41B is read out, and the position information of the figure data F1B and Based on the color information, the color information of the graphic data F1B is set as second pixel data P1B having a pixel value of 8-bit gradation, and the position information in the first image data holding unit 43a1 on which the pixel data P1A is drawn. Has a first figure data drawing section 44a1 for drawing at a predetermined pixel corresponding to the first figure. That is, the first graphic data drawing section 44a1 draws two graphic data F1A and F1B having consecutive display priorities on the common first image data holding section 43a1 and draws the graphic data F1B overlapping the graphic data F1A. In other words, the graphic data F1B further written in the pixel where the graphic data F1A is written in the first image data holding unit 43a1 is overwritten on the graphic data F1A, and the graphic data F1A written in the pixel is written. Are the graphic data F1A having a low display priority to the graphic data F1B having a high display priority.
Is rewritten as

The power distribution system diagram display device 40 is a
Graphic data F stored in the distribution system data storage unit 42A
2A, and based on the position information and color information of the graphic data F2A, the color information of the graphic data F2A is converted to third pixel data P having a pixel value of 8-bit gradation.
2A is drawn at a predetermined pixel corresponding to the position information in the second image data holding unit 43a2, and the graphic data F2B stored in the second B distribution system data storing unit 42B is read out, and the position information of the graphic data F2B and Based on the color information, the color information of the graphic data F2B is set as fourth pixel data P2B having a pixel value of 8-bit gradation, and is stored in the position information of the second image data holding unit where the third pixel data is drawn. It has a second figure data drawing section 44a2 for drawing on a corresponding predetermined pixel.

That is, the second graphic data drawing section 44a2
Represents two graphic data F2A and F2 having consecutive display priorities.
2B is drawn over the common second image data holding unit 43a2, and the graphic data F2 overlapping the graphic data F2A is drawn.
B, in other words, the graphic data F2B further written on the pixel where the graphic data F2A is written in the second image data holding unit 43a2 is overwritten on the graphic data F2A, and the graphic written on the pixel is written. The data is graphic data F2A with a low display priority.
Is rewritten to graphic data F2B having a higher display priority.

Further, the distribution system diagram display device 40 is provided with the second
The graphic data F2A and F2B stored in the A distribution system data storage unit 42A and the second B distribution system data storage unit 42B are read out, and the second mask image data storage unit 43m2 based on the read graphic data F2A and F2B. By writing "pixel value" 1 "" to all the pixels corresponding to the area where the figure data F2A and F2B are present, the pixels where the figure data F2A and F2B are present in the second mask image data holding unit 43m2. A mask image data drawing unit 44m2 for drawing mask image data IMAB in which only the pixel value of the area is "1" and the pixel values of other pixels are "0" is provided.

The power distribution system diagram display device 40
The first image data I1 related to the graphic data F1A and F1B from the image data holding unit 43a1, the second image data I2 related to the graphic data F2A and F2B from the second image data holding unit 43a2, and the second mask image data. An image data synthesizing unit 50 for reading out the mask image data IM2 from the holding unit 43m2 and synthesizing the first image data I1, the second image data I2 and the mask image data IM2 for each pixel according to the display priority. The image data combining unit 50 writes the combined result image data obtained as a result of the combining process into the combined result image data holding unit 6.

The power distribution system diagram display device 40 includes a display unit 11 for reading out the synthesis result image data held in the synthesis result image data holding unit 6 and performing color conversion via a color display after color conversion. Note that functional blocks that perform substantially the same operation processing as in the first and second embodiments are denoted by the same reference numerals, and descriptions thereof are omitted or simplified.

According to this configuration, the distribution system diagram display device 40
Starts the execution of the distribution diagram creation and display process, the first figure data drawing section 44a1 and the second figure data drawing section 44
a2 starts the drawing process, and the mask image data drawing unit 44m2 starts the mask image data drawing process.

That is, the first graphic data drawing section 44a1
First reads out the graphic data F1A stored in the first A distribution system data storage 41A and converts it into pixel data having an 8-bit gradation, the first image data storage corresponding to the position information of the graphic data F1A. 43a
Write to a given pixel of 1. Next, the first graphic data drawing unit 44a1 stores the first B distribution system data storage unit 41.
The graphic data F1B stored in B is read out and written into predetermined pixels of the first image data holding unit 43a1 corresponding to the position information of the graphic data F1B as pixel data having an 8-bit gradation. As a result,
The first image data holding unit 43a1 stores the figure data F
1A and the graphic data F1B are respectively written into predetermined pixels, and in the superimposition area, the first graphic data F1B is drawn so as to always overwrite the graphic data F1A.
Is obtained.

On the other hand, the second graphic data drawing section 44a2
First, the graphic data F2A stored in the second A distribution system data storage unit is read out and converted into pixel data having a gradation of 8 bits in the second image data storage unit 43a2 corresponding to the positional information of the graphic data F2A. Write to pixel. Next, the second graphic data drawing unit 4
Reference numeral 4a2 denotes a second image data holding unit 43a corresponding to the position information of the figure data F2B by reading the figure data F2B stored in the second B power distribution system data storage unit 42B and converting the read data into pixel data having an 8-bit gradation.
Write to the 2 given pixel. As a result, the graphic data F2A and the graphic data F2B are respectively written into predetermined pixels in the second image data holding section 43a2, and the graphic data F2B is always overwritten on the graphic data F2A in the superimposed area. Is obtained as the second image data I2.

Then, the mask image data drawing section 4
4m2 is the second A distribution system data storage unit 42A and the second
The graphic data F2A and F2A stored in the B distribution system data storage unit 42B are read out, and the graphic data F2A and F2B are read out.
In the second mask image data holding unit 43m2, the graphic data F2A and F2B
Is drawn, and only the pixel value of the pixel area where "1" exists is "1", and the pixel values of the other pixels are "0".

Hereinafter, the image data synthesizing unit 50 of the power distribution system diagram display device 40 of the present configuration performs the same image data synthesizing processing as in steps S1 to S4 of FIG. Graphic data F1 (graphic data F1A is overwritten with graphic data F1A) and second graphic data F2 with a high display priority (graphic data F2A is overwritten with graphic data F2B)
In the pixel area where the second image data F2 and the first image data F1 are always displayed preferentially in the pixel area where the image data overlaps with the first image data F1, that is, four levels of display priorities (graphic data F2B> The combined image data Ic maintaining the figure data F2A> the figure data F1B> the figure data F1A) is obtained in the combined result image data holding unit 6. Then, the combined result image data Ic is displayed in color as a distribution system diagram having 255 display colors by the display unit 11 as in the first embodiment.

At this time, for example, the graphic data F1A and F1B
Are superimposed in the region where the graphic data F1A
When the system state of the equipment corresponding to the graphic data F1A having a lower display priority changes in F1B, the graphic data F1A is redrawn in order to reflect the change in the system state. Since the graphic data F1B with high display priority stored in the same pixel is overwritten, the graphic data F1B must be redrawn after the graphic data F1A is redrawn.

However, according to this configuration, since the graphic data F1A having a low display priority is a graphic data having a low display update frequency, the display update processing of the graphic data F1A is performed.
That is, the graphic data F1A is transferred to the first graphic data drawing section 44a.
The redrawing process is hardly performed on the first image data holding unit 43a1 via 1 and there is no effect on the graphic data display update processing time corresponding to the system state change.

In addition to this effect, in the present configuration, it is not necessary to provide an image data holding unit dedicated to the graphic data F1A having a low display priority, so that memory resources for the image data holding unit can be saved. Further, since it is not necessary to perform the process of drawing the image data in the image data holding unit dedicated to the graphic data F1A and reading the image data from the image data holding unit dedicated to the graphic data F1A, the procedure of the image data combining process is reduced. However, the procedure of the image data synthesizing process can be simplified.

Similarly, even in the area where the graphic data F2A and F2B overlap, the graphic data F2A and F2B
Since the graphic data F2A having a low display priority is a graphic data having a low display update frequency, the graphic data F2A
The display update processing frequency is low, the graphic data display update processing time corresponding to the system status change is not affected, and the image data holding unit dedicated to the graphic data F2A having a low display priority becomes unnecessary. In this case, it is possible to obtain the effect of saving memory resources and simplifying the image data synthesis processing procedure.

That is, according to this configuration, a power distribution system diagram composed of graphic data groups having four stages of display priorities is converted into 255 image data by using two image data holding units having a smaller number of stages of display priorities. Color display can be performed with gradation, and visibility of the distribution system diagram can be maintained at a high level.

On the other hand, according to the present configuration, even if the system state of the equipment corresponding to the graphic data F1B of the first graphic data F1 having a low display priority changes, the display priority is high without any state change. Since there is no need to redraw the graphic data F2 corresponding to the equipment, the first and second methods for speedily and efficiently performing the graphic data display update processing corresponding to the system state change while maintaining the priority relation of the display priority are maintained. The same effect as in the second embodiment can be obtained.

In the present embodiment, the display priority is four levels, and two graphic data having consecutive display priorities and adjacent to each other are stored in the common image data holding unit and the mask image data holding unit, respectively. Although the case of drawing has been described, the present invention is not limited to this, the display priority is set to a desired stage, and a plurality of graphic data that are continuous and adjacent to each other are shared by a common image data holding unit and It is also possible to draw on each of the mask image data holding units.

That is, as shown in FIG. 12, even in the case where the display priority is n = 2 or more, a plurality of (2 <m ≦ n) graphic data Fj1 in which the display priority is continuous and adjacent. , Fj2,..., Fsm, and the display priority and the update frequency thereof are “Fj1 <Fj2 <..., <Fjm”. The graphic data Fj1 to Fjm from the system holding unit 41jm are drawn on the common image data holding unit 43aj and the common mask image data holding unit 43mj by the jth graphic data drawing unit 44aj and the jth mask image data drawing unit 44mj. It may be configured as follows.

At this time, the common image data holding unit 4
3aj and common mask image data holding unit 43m
Since the display priority and update frequency of the graphic data Fj1 to Fjm drawn on j are “Fj1 <Fj2 <... <Fjm”, for example, in the area where the graphic data Fj1 to Fjm are superimposed, the display priority is Display update processing of the graphics data Fj1 having a low graphics data Fj1, that is, the graphics data Fj1 is stored in the j-th image data holding section 43 through the j-th graphics data drawing section 44aj.
The process of redrawing aj is hardly performed compared to the frequently updated graphic data Fjm, for example. Therefore, even if the display priority is set to a desired stage and a plurality of graphic data continuous and adjacent to each other are drawn in the common image data holding unit and the mask image data holding unit, the memory The effect of saving resources and simplifying the image data synthesis processing procedure can be obtained.

(Fourth Embodiment) FIG. 13 is a diagram showing functional blocks of a distribution system diagram display device 50 of the present embodiment.

As shown in FIG. 13, the distribution system diagram display device 50
Is divided into four types of graphic data constituting a distribution system diagram and stored in four distribution system data storage units 52a1 to 52a4. That is, the distribution system diagram display device 50 stores a first distribution system data storage unit 52a1 for storing the first graphic data F1 in the graphic data constituting the distribution system diagram.
A second power distribution system data storage unit 52a2 for storing the second graphic data F2 of the graphic data; and a third power storage system for storing the third graphic data F3 of the graphic data.
A distribution system data storage unit 52a3 and a fourth distribution system data storage unit 52a4 for storing fourth graphic data F4 in the graphic data are provided.

Further, the distribution system diagram display device 50 reads out the first graphic data stored in the first distribution system data storage section 52a1 in the same manner as in the first and second embodiments, and stores the 8-bit floor data. First image data F having a tone
1 and a first graphic data drawing unit 54a1 for drawing in the first image data holding unit 53a1 and a first graphic data F1 stored in the first distribution system data storing unit 52a1 are read out. By the same processing, the first mask image data IM1 related to the first graphic data F1 is stored in the first mask image data holding unit 53m1.
First mask image data drawing unit 54m1
And the second graphic data F2 stored in the second distribution system data storage section 52a2 is read out and drawn as second image data I2 having an 8-bit gradation in the second image data storage section 53a2. Data drawing unit 54
a2 and the second figure data F2 stored in the second distribution system data storage section 52a2 are read, and the second mask image data IM2 related to the second figure data F2 is stored in the second mask image data holding section 53m2. The second mask image data drawing unit 54m2 for drawing the image data and the third graphic data F3 stored in the third power distribution system data storage unit 52a3 are read out and read as the third image data I3 having a gradation of 8 bits. 3 image data holding unit 53
a3, a third graphic data drawing unit 54a3 for drawing on
The third graphic data F3 stored in the distribution system data storage unit 52a3 is read, and the third mask image data IM3 relating to the third graphic data F3 is drawn in the third mask image data holding unit 53m3. And a mask image data drawing section 54m3.

Further, the distribution system diagram display device 50 is provided with the first
To the third graphic data drawing units 54a1 to 54a3 and the first
To third mask image data drawing units 54m1 to 54m1
Similarly to m3, the fourth graphic data F4 stored in the fourth power distribution system data storage unit 52a4 is read out and drawn as fourth image data I4 having an 8-bit gradation in the fourth image data storage unit 53a4. A fourth graphic data drawing unit 54a4 and a fourth power distribution system data storage unit 52a4
The fourth graphic data F4 stored in the fourth graphic data F4 is read out, and the fourth mask image data IM4 relating to the fourth graphic data F4 is rendered in the fourth mask image data holding section 53m4. 54m4.

Then, the distribution system diagram display device 50 of this configuration
Are the first to fourth graphic data (or the first to fourth image data related to the first to fourth graphic data)
An input unit 55 is provided for selecting whether or not to display each of them, and for setting the display priority in the selected graphic data when displayed. The input unit 55 is embodied by an operation input device including a keyboard and a pointing device (mouse or the like), and is set data for setting the above-described display presence / absence selection and display priority by operation of the operation input device by the monitoring control operator. D can be input.

[0168] The distribution system diagram display device 50 also controls the image data holding units 53a1 to 53a5 based on the selection data and the display priority setting data input from the input unit 55.
3a4 and each mask image data holding unit 53m1-
An image data synthesizing unit 56 for synthesizing 53m4 and writing the synthesized result image data obtained as a result of the synthesizing process to the synthesized result image data holding unit 6, a synthesized result image data held in the synthesized result image data holding unit 6 And a display unit 11 for reading out the color data and performing color conversion through a color display after color conversion. Note that functional blocks that perform substantially the same operation processing as in the first to third embodiments are denoted by the same reference numerals, and descriptions thereof are omitted or simplified.

Next, the operation processing executed by the power distribution system diagram display device 50 of this configuration will be described in particular with respect to the image data synthesizing unit 5.
The description will focus on the processing of No. 6.

According to this configuration, the first to fourth graphic data drawing units 54a1 to 54a1 to 54 are similar to the first to third embodiments.
a4 and first to fourth mask image data drawing units 5
By the processing of 4m1 to 54m4, the first image data I1 to the fourth image data I4 are drawn in the first to fourth image data holding units 53a1 to 53a4, respectively, and the first to fourth mask image data holding units 53m
1 to 53m4 The first mask image data IM1 to the fourth mask image data IM1 are respectively drawn.

On the other hand, when the setting data D including the selection contents and the display priority contents is transmitted from the input unit 55 via, for example, an operator, the image data synthesizing unit 56 performs image data synthesizing according to the transmitted setting data. Perform processing. That is, the image data synthesizing unit 56 is
The setting data D including the selection content and the display priority content sent from 5 is read (FIG. 14; step S40). In the present embodiment, the content of the setting data D is to display all of the first to fourth graphic data F1 to F4,
It is assumed that the display priority is set as F4>F3>F2> F1.

The image data synthesizing section 56 stores the first to fourth image data I1 to I4 corresponding to the set first to fourth graphic data F1 to F4.
The image data holding units 53a1 to 53a4 and the first
The first to fourth mask image data holding units 53m1 corresponding to the to fourth image data holding units 53a1 to 53a4.
(1st image data holding unit 53a)
1, the first mask image data holding unit 53m1)
(The fourth image data holding unit 53a4 and the fourth mask image data holding unit 53m4) are displayed with the display priority "F4>F3>F2>F1" included in the read setting data D.
, (The fourth image data holding unit 53a4, the fourth mask image data holding unit 53m4)> (the third image data holding unit 53a3, the third mask image) Data holding unit 53m3)> (second image data holding unit 53a)
2. Second mask image data holding unit 53m2)>
(The first image data holding unit 53a1 and the first mask image data holding unit 53m1) (step S4).
1).

Next, the image data synthesizing unit 56 is a set of image data holding units sorted in the lowest display priority, that is, the first image data holding unit 53a.
1 to read out the first image data I1,
After the first image data holding unit 53a1, the set of image data holding unit and masking image data holding unit which are sorted in the order of the display priority, ie, the second image data holding unit 53a2 and the second mask The second image data I2 and the second mask image data IM2 are read out from the image data holding unit 53m2 (step S42).

Subsequently, the image data synthesizing section 56 uses the read first image data I 1, second image data I 2, and second mask image data IM 2 in the same manner as in steps S 1 to S 4 in FIG. By performing the processing, the synthesized image data IC1 synthesized so that the second graphic data F2 having a higher display priority is overwritten on the pixel area where the first graphic data F1 is drawn.
2 is obtained (step S43).

Next, the image data synthesizing unit 56 sets the image data holding unit and the mask image data holding unit sorted in the order of the display priority next to the currently synthesized image data, that is, the third image data. The third image data I3 and the third mask image data IM3 are read from the data holding unit 53a3 and the third mask image data holding unit 53m3, respectively (step S44).

The image data synthesizing section 56 performs the steps S1 to S3 of FIG. 3 based on the synthesized image data IC12 currently synthesized, the read third image data I3 and the third mask image data IM3. S
4, the first image data is "composite image data IC12", the second image data is "third image data I3", and the second mask image data is "third mask image". By performing processing equivalent to steps S1 to S4 instead of reading data IM3, the first graphic data F1 and the second graphic data F1 are read.
The combined image data IC1-3 obtained by overwriting the pixel area where 2 is drawn with the third graphic data F3 having a higher display priority is obtained (step S45).

Next, the image data synthesizing section 56 determines whether or not all the image data to be displayed have been synthesized (step S46). In the present embodiment, the image data I1 relating to all the graphic data F1 to F4
To I4 are displayed, the result of the determination in step S46 is NO, and the image data synthesizing unit 56 returns to before executing the processing in step S44,
Image data I1 related to all graphic data F1 to F4
Steps S44 to S46 are repeated until .about.I4 is synthesized. In the present embodiment, the processing of steps S44 to S46 is repeated once, and the display is performed on the pixel area where the first graphic data F1, the second graphic data F2, and the third graphic data F3 are drawn. Synthesized image data IC1-4 obtained by overwriting the fourth graphic data F4 with high priority is obtained.

On the other hand, as a result of the determination in step S46, YE
S, that is, when the image data I1 to I4 relating to all the graphic data F1 to F4 are combined, the image data combining unit 56 combines the contents of the combined image data IC1-4 thus obtained. The result is copied to the result image data holding unit 6 (step S47).

As described above, the first graphic data F1, the second graphic data F2,
In the pixel region where the third graphic data F3 and the fourth graphic data F4 overlap each other, four levels of display priority "F4>F3>F2> set via the input unit 55.
F1 ", the fourth graphic data F4 having the highest display priority is preferentially displayed (overwritten) on the other graphic data F1 to F3, and the third graphic data F3 is replaced with the other graphic data F1. .. F2 are displayed preferentially (overwrite), and the second graphic data F2 is preferentially displayed (overwritten) on graphic data F1.
C1-4 is obtained in the synthesis result image data holding unit 6. The obtained synthesized result image data IC1-4 is the first
Similar to the embodiment, the display unit 11 performs color display as a power distribution system diagram having 255 display colors.

According to the present embodiment, the first to fourth image data and the first to fourth mask image data relating to the first to fourth graphic data are stored in advance in the first to fourth image data holding units. The image data is held in the first to fourth mask image data holding units.
By setting which graphic data of the fourth graphic data is to be displayed at what display priority, only necessary graphic data constituting the distribution system diagram are displayed at an arbitrary display priority. Can be done.

Therefore, the display priority is "F4>F3>
When F2> F1 is set, even when it is desired to preferentially display the second graphic data F2 due to various conditions of the power distribution system, the display priority is set to, for example, "F2" from the input unit 55.
2>F4>F3> F1 ", the setting data D is transmitted to the image data synthesizing section 56, and the image data synthesizing section 56 transmits the display priority" F2 "in the above-described steps S40 to S47. >F4>F3> F1
Is performed in accordance with the setting data D including the first graphic data F1, the third graphic data F3, and the fourth graphic data F4. And generates composite image data IC1-4 synthesized so as to overwrite the third graphic data F3 with high
Can be held. That is, in the present embodiment,
Since the display priority of the distribution system diagram can be changed in response to a change in various conditions of the distribution system, in addition to the effects described in the first to third embodiments, the monitoring / control function of the distribution system diagram is provided. Can be even higher.

In the present embodiment, the display priority is set to “F4>F3>F2> F1” via the input unit 55. However, the present invention is not limited to this. Any setting may be made via the unit 55.

Further, in the present embodiment, the display priority is set to four levels, but the present invention is not limited to this, and the number and the positional relationship of each component of the street map and the power distribution system equipment are set. Can be set to a desired stage according to That is, it has a distribution system data storage unit, a graphic data drawing unit, a mask image data drawing unit, an image data holding unit, and a mask image data holding unit for the stages of the set display priorities. Any configuration may be used as long as the image data synthesizing unit controls the image data synthesizing process according to the setting data to be set.

(Fifth Embodiment) A fifth embodiment of the present invention will be described below with reference to FIGS.

FIG. 15 is a diagram showing functional blocks of a distribution system diagram display device 60 according to the present embodiment.

According to FIG. 15, the distribution system diagram display device 60
In the same manner as in the first embodiment, graphic data constituting a distribution system diagram is divided into two types based on two levels of display priorities and stored. That is, the distribution system diagram display device 60
A first power distribution system data storage unit 2a1 for storing first graphic data having a lower display priority as digital data having position information and color information among graphic data constituting a power distribution system diagram; And a second power distribution system data storage unit 2a2 for storing second graphic data having the second highest display priority as digital data having position information and color information.

Further, the distribution system diagram display device 60 is provided with the first
The first graphic data stored in the distribution system data storage unit 2a1 is read out, and based on the position information and color information of the first graphic data, the color information of the first graphic data is stored in, for example, an 8-bit floor. A first graphic data drawing unit 4a1 which draws pixel data (first image data) having a pixel value of a furnish at a predetermined pixel corresponding to the position information in the first image data holding unit 3a1.
And the second distribution data stored in the second distribution system data storage unit 2a2.
And reads the position information and color information of the second figure data based on the position information and color information of the second figure data, for example, pixel data (for example, pixel data having a pixel value of 8-bit gradation). A second graphic data drawing section 61a2 for drawing a predetermined pixel corresponding to the position information in the second image data holding section 3a2 as (second image data).

At this time, the second graphic data drawing section 61a2 in the present embodiment includes the color information of the second graphic data in the lower 7 bits of the 8 bits and the position information of the second graphic data. It is included in the most significant bit of the 8 bits. That is, the second graphic data drawing section 61a2
Sets the most significant bit of the pixel value of the $ pixel in the second image data holding unit 3a2 where the second graphic data is drawn to "1" at all times. That is, when the most significant bit of the pixel data drawn in the second image data holding unit 3a2 is "1", the pixel is drawn with the second graphic data.

On the other hand, the distribution system diagram display device 60 includes a first image data storage unit 3a1 for the first graphic data relating to the first graphic data and a second image data storage unit 3a2 for the second graphic data relating to the second graphic data. 2 and an image data synthesizing unit 62 for reading out the first graphic data and the second graphic data for each pixel in accordance with the display priority. The composition result image data obtained as a result of the composition processing is written in the composition result image data holding unit 6.

The distribution system diagram display device 60 includes a display unit 11 for reading out the synthesis result image data held in the synthesis result image data holding unit 6 and performing color conversion via a color display after color conversion.
Note that functional blocks that perform substantially the same operation processing as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted or simplified.

Next, the operation processing executed by the distribution system diagram display device 60 of this configuration will be described in particular with respect to the image data synthesizing section 6.
The following description focuses on the processing of No. 2.

When the power distribution system diagram display device 60 of this configuration starts execution of the power distribution system diagram creation and display processing, the first graphic data drawing section 4a1 and the second graphic data drawing section 61a2 start drawing processing. That is, the first graphic data drawing unit 4a
1, the first graphic data F1 stored in the first power distribution system data storage unit 2a1 is read out and stored as 8-bit pixel data (first image data) in a predetermined pixel of the first image data storage unit 3a1. Written.
The second graphic data F stored in the second distribution system data storage 2a2 by the second graphic data drawing unit 61a2.
2 is read out and written to a predetermined pixel corresponding to the position information of the second image data holding unit 3a2 as 8-bit pixel data (second image data) whose most significant bit is "1".

Here, the first image data holding unit 3a1
It is assumed that, for example, black and horizontal linear first graphic data F1 representing a distribution line symbol is written as a first image data I1 having a low display priority in a certain pixel area P. Then, an area including at least a part of the pixel area P corresponding to the pixel area P in the second image data holding unit 3a2, that is, at least a part of the first image data I1 overlaps with the figure data F1 existing part. It is assumed that, as the second image data I2 having a high display priority, for example, second graphic data F2 having a black circular shape representing a switch symbol and the inside thereof being filled with white is written (see FIG. 16). For simplicity, the pixel value has 2-bit information, the pixel value “00” represents white, the pixel value “01” represents black, and the pixel value “10”. ”,
Since “11” is not displayed on the display screen, no color is assigned).

As shown in FIG. 16, in the second image data holding unit 3a2, the pixels of the black outer peripheral line portion are pixels having the highest bit set to "1" in "01" representing black. Data “11” is stored, and pixel data “10” in which the most significant bit is set to “1” in “00” representing white is stored in a pixel in a white solid portion inside the circular outer peripheral line. .

At this time, the image data synthesizing section 62
The processing shown in FIG. 17 is performed. That is, the image data synthesizing section 62 is configured to output the second image data holding section 3a2.
, The pixel value of the pixel whose most significant bit is "1" in each pixel constituting the second image data I2 is set to "00", and the pixel value of the pixel whose most significant bit is "0" is set to "11". Image data IM2a set to
Create That is, this image data IM2a is
The most significant bit where the second graphic data F2 exists is "1"
, Ie, only the pixel value of the circular symbol portion is “00”, and the pixel values of all the pixels outside the circular symbol are “11”. In other words, the second graphic data F2 The mask pattern data IM2a for masking (holding and extracting) pixel regions other than the above is created (step S50, FIG. 16).
reference).

Subsequently, the image data synthesizing section 62 outputs the first
The first image data I1 is read from the image data holding unit 3a1, and the logical product of the read first image data I1 and image data IM2a, that is, the pixel value of each pixel of the first image data I1 and the image data A logical AND is performed for each corresponding bit with the pixel value of the corresponding pixel in IM2a. Now, in the image data IM2a, only the pixel value of the circular symbol portion where the second graphic data F2 exists is "00",
Since the pixel value of the other pixel is "11", the result of the logical product of this image data IM2a and the first image data I1 including the first graphic data F1 which is a linear symbol is the first image data In the pixel area where the first graphic data F1 (linear symbol) in I1 is stored, the second graphic data F2 (circular symbol portion) is stored.
Becomes “00” in the pixel area where
With respect to the pixel values of the other pixels, the same ("01") image data If (see FIG. 16) as the original first image data I1 is obtained (step S51).

Next, the image data synthesizing unit 62
The second image data I2 is read from the image data holding unit 3a2, and the most significant bit of each pixel of the second image data I2 is set to "0". As a result,
In the second image data I2, the image data in which the pixel value of the pixel of the circular outer peripheral line portion is set to "01" and the pixel value of the pixel of the white solid portion inside the circular outer peripheral line is set to "00", that is, the position The second image data I2a containing no information is created (step S52).

Then, the image data synthesizing section 62 generates the second image data I2a and the image data I2a.
f. That is, the logical sum is performed for each corresponding bit between the pixel value of each pixel of the second image data I2a and the pixel value of the corresponding pixel of the image data If. Now, in the image data If, the pixel value of only the pixel area where the second graphic data F2 is stored is "00", and the pixel values of the other pixel areas are the same as the original first image data I1 ("" 0
1 "), the result of the logical sum of this image data If and the second image data I2a is obtained in step S51.
The graphic data F2 of the second image data I2a is stored in the pixel area in which the pixel value "00" is set in the processing of (2).
(Circular symbol part) is drawn (stored) as a pixel value
That is, the synthesized image data Ig obtained by synthesizing the pixel area where the first graphic data F1 is drawn with the second graphic data F2 having a high display priority so as to overwrite the pixel area where the first graphic data F1 is drawn (FIG. 16 (step S53).

Then, the image data synthesizing section 62 copies the contents of the synthesized image data Ig obtained by the processing in step S53 to the synthesis result image data holding section 6 (step S54).

As described above, the first graphic data F1 having the lower display priority and the second graphic data F2 having the higher display priority are obtained by the image data synthesizing process of the above-described steps S51 to S54 by the image data synthesizing section 62. In the overlapping pixel area, the composite image data Ig in which the second graphic data F2 is always displayed with priority over the first graphic data F1 is obtained in the composite result image data holding unit 6. The synthesized result image data Ig is displayed in color as a distribution system diagram by the processing of the display unit 11.

That is, according to this configuration, the mask pattern of the second image data I2 can be obtained without performing the mask image data drawing processing based on the mask image data drawing section for the second mask image data holding section. Is generated, and image data synthesis processing is performed based on the mask pattern, thereby obtaining image data in which the display priority is maintained. Therefore, in this configuration, in addition to the effects described in the first to fourth embodiments, the image data synthesizing processing time can be shortened due to the reduction of the mask image data drawing process, the mask image data read process, and the like, and the mask A new effect of saving memory resources for the mask image data holding unit accompanying the reduction of the image data holding unit can be obtained.

In this embodiment, the display priority is set at two levels. However, the present invention is not limited to this, and the number and positional relationship of each component of the street map and the distribution system equipment are set. Can be set to a desired stage according to That is, it has a distribution system data storage unit, a graphic data drawing unit, and an image data drawing unit for the stages of the set display priority, and maintains the display priority priority by the image data synthesis processing of the image data synthesis unit. Any configuration that can obtain image data may be used.

(Sixth Embodiment) A sixth embodiment of the present invention will be described below with reference to FIG.

FIG. 18 is a diagram showing functional blocks of a distribution system diagram display device 70 of the present embodiment.

According to FIG. 18, the distribution system diagram display device 70
In the same manner as in the first embodiment, graphic data constituting a distribution system diagram is divided into two types based on two levels of display priorities and stored. That is, the distribution system diagram display device 70
A first power distribution system data storage unit 2a1 for storing first graphic data having a lower display priority as digital data having position information and color information among graphic data constituting a power distribution system diagram; And a second power distribution system data storage unit 2a2 for storing second graphic data having the second highest display priority as digital data having position information and color information.

Further, the distribution system diagram display device 70 is provided with the first
Similarly to the embodiment, the first graphic data stored in the first power distribution system data storage unit 2a1 is read out and drawn as first image data having an 8-bit gradation in the first image data storage unit 3a1. 1 figure data drawing unit 4
a1 and the second graphic data stored in the second distribution system data storage unit 2a2 are read out, and as in the fifth embodiment,
A second graphic data drawing section 61a2 for drawing in the second image data holding section 3a2 as second image data having 8-bit gradation including position information in the most significant bit and color information in the lower 7 bits. . As a result, the second
When the most significant bit is "1" in the pixel value of each pixel in the image data holding unit 3a2, it means that the second graphic data is drawn in that pixel.

Then, the power distribution system diagram display device 70
According to the value of the most significant bit of each pixel value of the second image data drawn on the image data holding unit 3a2,
For the second mask image data holding unit 3m2, the second
A mask image data creating unit 71 for creating mask image data is provided. The mask image data creating unit 71 is realized by combining a control operation circuit including an image processing processor and a microcomputer, a memory for storing control software and the like necessary for control operation processing of the control operation circuit, and the like. Be transformed into

The distribution system diagram display device 70
The second image data relating to the first graphic data from the image data retaining unit 3a1, the second image data relating to the second graphic data from the second image data retaining unit 3a2, and the image data retaining unit 3m2 for the second mask. Read out the second mask image data from
An image data synthesizing unit 72 for synthesizing the first image data, the second image data, and the second mask image data for each pixel in accordance with the display priority is provided. The composition result image data obtained as a result of the composition processing is written in a composition result image data holding unit 6 such as a frame memory.

The distribution system diagram display device 70 includes a display unit 11 that reads out the combined result image data held in the combined result image data holding unit 6 and performs color conversion via a color display after color conversion. Note that functional blocks that perform substantially the same operation processing as in the first embodiment (including modified examples) are given the same reference numerals, and descriptions thereof are omitted or simplified.

According to this configuration, as in the first and fifth embodiments, the first image data holding unit 3a1 stores the first image data in the first image data holding unit 3a1 by the processing of the first graphic data drawing unit 4a1 and the second graphic data drawing unit 61a2. And the second image data I2 are written in the second image data holding unit 3a2.

In this configuration, the second image data I2 held in the second image data holding section 3a2 is used by the mask image data creating section 71 to generate the second image data.
The mask image data IM2 is created in the second mask image data holding unit 3m2.

That is, the mask image data creating section 71 refers to the second image data holding section 3a2 and calculates the pixel value of the pixel whose most significant bit is "1" in each pixel constituting the second image data I2. Image data IM2 in which all bits are set to “1” and the pixel value of the pixel whose most significant bit is “0” is set to all bits “0” is created. That is, the image data IM2
Is that only the pixel region where the most significant bit in which the second graphic data F2 exists is "1" is the pixel value of all bits "1", and only the pixel region other than the second graphic data F2 is all the bits. Mask pattern data IM2 for masking all pixel areas of the image data IM2 having a pixel value of "0", that is, the second graphic data F2 similar to the first embodiment and the like is created.

The image data synthesizing section 72 holds the first image data I1 from the first image data holding section 3a1, the second image data I2 from the second image data holding section 3a2, and the second mask image data. By reading the second mask image data IM2 from the unit 3m2 and performing the image synthesizing process shown in steps S1 to S4 in FIG. 3, the first graphic data F1 having a low display priority and the first graphic data F1 having a high display priority are displayed. In the pixel area where the second graphic data F2 overlaps, the composite image data Ic in which the second graphic data F2 is always displayed with priority over the first graphic data F1 is obtained in the composite result image data holding unit 6.

Then, the composite result image data Ic
Are displayed in color as a distribution system diagram by the processing of the display unit 11.

That is, according to this configuration, the second image data I2 related to the second image data I2 can be processed without performing the mask image data drawing processing based on the mask image data drawing section for the second mask image data holding section. Image data for two masks is created, and image data synthesis processing is performed based on the second image data for masks to obtain image data that maintains the display priority order. Therefore, in this configuration, in addition to the effects described in the first to fifth embodiments, a new effect of shortening the image data synthesizing processing time accompanying the reduction in the mask image data drawing processing can be obtained.

In this configuration, the image data synthesizing process shown in the fifth embodiment (steps S50 to S50 in FIG. 17) is performed.
The processing procedure is simpler than the processing procedure (see step S54 in FIG. 3).
1 to S4, the processing of step S50 is added), for example, the system state of the equipment corresponding to the first graphic data having a lower display priority frequently changes, and the display color of the first graphic data is changed. The image data synthesizing process can be performed efficiently even if the data is frequently changed.

In this embodiment, the display priority is set at two levels. However, the present invention is not limited to this, and the number and positional relationship of each component of the street map and the distribution system equipment are set. Can be set to a desired stage according to

That is, when the display priority in the first embodiment shown in FIG. 6 is n (n is an integer of 3 or more), the second to n-th mask image data drawing units 4m
Instead of 2 to 4 mn, as described in this embodiment,
In accordance with the value of the most significant bit of the pixel value of each pixel of the second to n-th image data drawn in the second to n-th image data holding units 3a2 to 3am, the second to n-th mask image data By using the second to n-th mask image data creating units for creating the second to n-th mask image data for the holding units 3a2 to 3am, no matter how many levels of display priority, the masking unit It is possible to shorten the image data synthesizing processing time accompanying the reduction in the image data drawing processing, and to improve the efficiency of the image data synthesizing processing.

[0219]

According to the distribution system diagram display device according to any one of the first to sixth aspects, for example, the first to n-th (m-th to m-th) display units each have position information and color information classified according to a plurality of display priorities. ) Is based on the second to n-th mask image data for masking only the pixel area where the second to n-th graphic data exists and the display priority. By synthesizing, even if redraw processing of graphic data having a low display priority is performed, it is possible to obtain synthesized result image data that is always overwritten in descending order of the display priority.

Therefore, if the s-th s-th display priority is low.
Even if the system state of the component corresponding to the graphic data of (s <n) changes and the s-th figure data is redrawn according to the system state change, the s + 1-th to s + 1-th display elements with a high display priority are displayed.
Since it is not necessary to redraw the graphic data of n again, graphic data display update processing corresponding to the change in the system state of the components of the power distribution system diagram can be performed speedily and efficiently while maintaining the display priority.

In particular, according to the present invention, the processing of synthesizing the first to n-th image data drawn based on the first to n-th graphic data is performed on the pixel values of the first to n-th image data. Since it is performed irrespective of this, the first to n-th graphic data relating to the first to n-th image data can be displayed in the maximum display color corresponding to the maximum gradient of the pixel value. . As a result, the visibility of the distribution system diagram can be improved, and the monitoring control function of the distribution system diagram can be enhanced.

According to the power distribution system diagram display device of the present invention, the color information is based on the first to n-th graphic data each having position information and color information classified according to a plurality of display priorities. And first to n-th image data having pixel values including position information and the obtained first data.
The image data is synthesized by the image data synthesizing means based on the display priority and the position information included in each pixel value of the first to n-th image data, so that the graphic data having the low display priority is temporarily Even if the redrawing process is performed, it is possible to always obtain synthesized result image data that is overwritten in the order of the display priority.

That is, since the synthesized result image data can be obtained without performing the mask image data drawing processing based on the mask image data holding unit, the display update processing can be performed more quickly.

According to the power distribution system diagram display device of the present invention, the color information is based on the first to n-th graphic data each having the position information and the color information classified according to the plurality of display priorities. And first to n-th image data having pixel values including position information, and position information included in each pixel value of the second to n-th graphic data in the first to n-th image data. Based on the second
To create the second to n-th mask image data for masking only the pixel area where the n-th graphic data exists;
By combining the first to n-th image data and the created second to n-th mask image data in accordance with the display priority, the graphic data having a low display priority is temporarily redrawn. In this case, it is possible to obtain synthesized result image data that is always overwritten in the descending order of display priority.

That is, since the synthesized result image data can be obtained without performing the mask image data drawing processing based on the mask image data holding unit, the display update processing can be performed more quickly.

[Brief description of the drawings]

FIG. 1 is a functional block configuration diagram of a power distribution system diagram display device according to a first embodiment of the present invention.

FIG. 2 is a diagram schematically showing a flow of image data in an image data synthesizing process of the power distribution system diagram display device according to the first embodiment.

FIG. 3 is a schematic flowchart illustrating an example of a process of an image data combining unit of the power distribution system diagram display device according to the first embodiment.

FIG. 4 is a functional block configuration diagram of a power distribution system diagram display device according to a modification of the first embodiment of the present invention.

FIG. 5 is a schematic flowchart illustrating an example of processing of an intermediate image data synthesizing unit and an image data synthesizing unit of a power distribution system diagram display device according to a modification of the first embodiment.

FIG. 6 is a functional block configuration diagram of the power distribution system diagram display device according to the first embodiment when the display priority is n stages.

FIG. 7 is a functional block configuration diagram of a power distribution system diagram display device according to a second embodiment of the present invention.

FIG. 8 is a diagram schematically showing a flow of image data in an image data synthesizing process of the power distribution system diagram display device according to the second embodiment.

FIG. 9 is a schematic flowchart illustrating an example of processing of an intermediate-stage image data synthesizing unit and a mask image data synthesizing unit of the power distribution system diagram display device according to the second embodiment.

FIG. 10 is a functional block configuration diagram of a power distribution system diagram display device according to a second embodiment when the display priority is n stages.

FIG. 11 is a functional block configuration diagram of a power distribution system diagram display device according to a third embodiment of the present invention.

FIG. 12 is a functional block configuration diagram of a main part of a power distribution system diagram display device according to a third embodiment when the display priority is n stages.

FIG. 13 is a functional block configuration diagram of a power distribution system diagram display device according to a fourth embodiment of the present invention.

FIG. 14 is a schematic flowchart illustrating an example of a process of an image data synthesizing unit of the power distribution system diagram display device according to the fourth embodiment.

FIG. 15 is a functional block configuration diagram of a power distribution system diagram display device according to a fifth embodiment of the present invention.

FIG. 16 is a diagram schematically showing a flow of image data in an image data synthesizing process of the power distribution system diagram display device according to the fifth embodiment.

FIG. 17 is a schematic flowchart showing an example of processing of an intermediate stage image data synthesizing unit and a mask image data synthesizing unit of the power distribution system diagram display apparatus according to the fifth embodiment.

FIG. 18 is a functional block configuration diagram of a power distribution system diagram display device according to a sixth embodiment of the present invention.

FIG. 19 is a functional block configuration diagram of a conventional power distribution system diagram display device.

FIG. 20 is a functional block configuration diagram of a conventional distribution system diagram display device.

FIG. 21 is a diagram showing a setting example of a color map in the distribution system diagram display device shown in FIG. 20;

[Explanation of symbols]

1, 20, 30, 40, 50, 60, 70 distribution system diagram display device 2a1, 52a1 first distribution system data storage unit 2a2, 52a2 second distribution system data storage unit 2a3, 52a3 third distribution system data storage unit 2a4, 52a4 to 2an Fourth to nth distribution system data storage units 3a1, 43a1, 53a1 First image data storage units 3a2, 43a2, 53a2 Second image data storage units 3m2, 43m2, 53m2 Image data storage unit for second mask 3a3, 53a3 Third image data holding unit 3m3 53m3 Third mask image data holding unit 3a4, 53a4 to 3an Fourth to nth image data holding units 3m4, 53m4 to 3mn Fourth to nth mask image data holding units 4a1, 44a1 , 54a1 first figure data drawing section 4a2, 44a2, 54a2, 61a2 second figure Data drawing units 4m2, 44m2, 54m2 Mask image data drawing units 4a3, 54a3 Third graphic data drawing units 4m3, 54m3 Third mask image data drawing units 4a4, 54a4 to 4an Fourth to nth graphic data drawing units 4m4 , 54m4 to 4mn Fourth to nth mask image data drawing units 5, 35, 50, 56, 62, 72 Image data synthesis unit 5A1 Intermediate image data synthesis unit (first image data synthesis unit) 5A2 image data synthesis unit ( Second image data synthesizing section) 5A3 to 5An-1 Third to (n-1) th image data synthesizing sections 6 Synthesis result image data holding section 7 Sequential scanning section 8 Color conversion circuit 9 D / A conversion section 10 Color display 11 Display 31 Synthesis intermediate stage image data synthesis unit 32 Intermediate stage image data synthesis unit 32A2 to 32A (n-1) Second to (n-1) th image data synthesizing unit (intermediate stage image data synthesizing unit) 33 Image data holding unit for synthesizing intermediate stage mask 34 Image data synthesizing unit for mask 41A 1A First A distribution system data Storage unit 41B 1B distribution system data storage unit 41j1 to 41jm j1 to jm distribution system data storage unit 42A 2A distribution system data storage unit 42B 2B distribution system data storage unit 43aj jth image data storage unit 43mj jth mask Image data holding unit 44aj for j-th figure data drawing unit 44mj image data for j-th mask drawing unit 53m1 image data holding unit for first mask 54m1 image data drawing unit for first mask 55 input unit 71 image data creation unit for mask

Claims (8)

[Claims] 1. A distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as facility equipment related to the distribution system are represented as a plurality of figures, A plurality of graphic data each having predetermined position information and color information corresponding to the constituent elements described above are divided into first graphic data having the lowest display priority to n-th graphic data having the highest display priority (n is 2 A storage unit for classifying and storing the graphics data as the above (integer), and a pixel corresponding to the position information in n frame image data holding units corresponding to the first to n-th graphics data corresponding to the screen of the display. A first drawing unit that obtains first to n-th image data having pixel values including the color information by drawing each of the areas, Based on the n-th graphic data, the second to n-th frame image data holding units corresponding to the screens of the display are masked only in the pixel areas where the second to n-th graphic data are present. Second drawing means for drawing the n-th mask image data, and synthesizing the first to n-th image data and the second to n-th mask image data according to the display priority; A power distribution system diagram comprising: image data synthesizing means; and display means for graphically displaying, via the display, a power distribution system diagram based on the synthesis result image data obtained by the synthesis processing of the image data synthesizing means. Display device. 2. The image forming apparatus according to claim 1, wherein the second drawing unit sets a pixel value of a pixel where the second to n-th graphic data exists to “1” for the (n−1) image data holding units, Means for obtaining the second to n-th mask image data by setting other pixels to "0"; and wherein the image data synthesizing means performs (n-1) image synthesis processing based on the display priority. , And the n-
The k-th (k = 1,..., N−1) combining unit in one combining unit is the k−1th combined image data (k) obtained by the image data combining processing of the k−1th combining unit. > 2) or the first image data (when k = 2), the (k + 1) th image data,
This is means for creating k-th combined image data by combining the +1 mask image data according to the display priority, and obtaining the k-th combined image data by the k-th (k = n-1) combining unit. 2. The distribution system diagram display device according to claim 1, wherein the k-th (k = n-1) synthesized image data obtained is supplied to the display means as the synthesized result image data. 3. The k-th (k = 1,..., N-1) synthesizing unit includes an inversion processing unit that inverts a pixel value of each pixel of the (k + 1) th mask image data, and an inversion processing unit. The pixel values of the (k + 1) -th mask image data and the (k-1) -th combined image data (in the case of k> 2) obtained by the image data combining processing of the (k-1) -th combining unit, or the first A logical product execution unit that performs logical product between each pixel value of the image data (when k = 2), each pixel value of the image data obtained by the logical product, and each pixel of the (k + 1) th image data 3. The power distribution system diagram display device according to claim 2, further comprising: a logical sum executing unit configured to execute a logical sum with a value to generate the k-th composite image data. 4. The method according to claim 1, wherein the display priority n is 3 or more, and the second drawing unit is configured to provide the second image data holding unit with a pixel corresponding to the pixel where the second to n-th graphic data exists. The value is set to “1”, and the other pixels are set to “0” to obtain the second to n-th mask image data. N-2 combining units for performing a combining process based on
And mask image data synthesizing means for synthesizing the mask image data to generate synthesized mask image data. The k-th (k = 2,..., N-
The combining unit of 1) is the (k−1) th combined image data (when k> 2) obtained by the image data combining processing of the (k−1) th combining unit or the second image data (k = 2) ), The k-th image data and the (k + 1) -th mask image data are combined according to the display priority to generate k-th combined image data. k = 2, ..., n-1)
The k-th (k = n-1) synthesized image data obtained by the image data synthesizing process of the k-th (k = n-1) synthesizing unit in the synthesizing unit and the mask image data synthesizing unit. The combined image data obtained by combining the combined mask image data and the first image data in accordance with the display priority is supplied to the display means as the combined result image data. Distribution system diagram display device according to the description. 5. A distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as facility equipment related to the distribution system are represented as a plurality of figures, The plurality of graphic data respectively having the position information and the color information predetermined corresponding to the constituent elements are converted from the first graphic data with the lowest display priority to the m-th graphic data with the highest display priority (m is 2 Storage means for classifying and storing graphic data of the above (integer) and a frame image data holding unit corresponding to the screen of the display by n (n <n
m) graphic data having at least a part of the first to m-th graphic data and in which the display priority order is continuous are held in the n frame image data holding units in common with the frame image data. And drawing the remaining graphic data in frame image data holding units other than the common frame image data holding unit in the n frame image data holding units, thereby having pixel values including the color information. a first drawing unit for obtaining n pieces of image data, and a frame image data holding unit corresponding to the screen of the display being n
-1 and at least a part of the second to n-th graphic data, the order of the display priorities is continuous, and the n-1 pieces of the graphic data have a difference in display update frequency. In the common frame image data holding unit in the frame image data holding unit, mask image data for masking only the pixel area where the plurality of figure data exists is drawn, and based on the remaining figure data, n-
Rendering mask image data for masking only a pixel area where the remaining graphic data exists in a frame image data holding unit other than the common frame image data holding unit in one frame image data holding unit. A second drawing means for obtaining (n-1) image data for mask, and n image data obtained by the drawing processing of the first drawing means and the drawing processing of the second drawing means. Image data synthesizing means for synthesizing the n-1 mask image data according to the display priority, and a power distribution system diagram based on the synthesis result image data obtained by the synthesizing process of the image data synthesizing means. And a display unit for displaying a graphic via a display. Apparatus. 6. A distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as equipment related to the distribution system are represented as a plurality of figures, Are classified into first to m-th (m is an integer of 2 or more) graphic data having a plurality of pieces of graphic data each having predetermined position information and color information corresponding to the constituent elements according to the display priority. Storage means for storing and storing the first
To m-th graphic data are drawn on pixel regions corresponding to the position information in the m pieces of frame image data holding units corresponding to the screens of the display, respectively, so as to have pixel values including the color information. First drawing means for obtaining the first to m-th image data; and the m frame image data holding units corresponding to the screen of the display based on the first to m-th graphic data. A second drawing means for drawing first to m-th mask image data for masking only a pixel area in which the graphic data exists, and a second drawing means in the power distribution system diagram from among the first to m-th graphic data. A selection setting method for selecting n (n ≦ m) graphic data to be displayed as a graphic and setting the display priority of each of the selected n graphic data And first to n-th image data related to the n pieces of graphic data selected by the selection setting unit in the first to m-th image data obtained by the drawing processing of the first drawing unit; The selection setting is performed based on the first to n-th mask image data relating to the n pieces of graphic data selected by the selection setting means in the n pieces of graphic data obtained by the drawing processing of the second drawing means. Image data synthesizing means for performing image data synthesizing processing according to the display priority set by the means, and a power distribution system diagram based on the synthesis result image data obtained by the synthesizing processing of the image data synthesizing means, via the display. A distribution system diagram display device, comprising: display means for displaying a graphic. 7. A distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as facility equipment related to the distribution system are represented as a plurality of figures, A plurality of graphic data each having predetermined position information and color information corresponding to the constituent elements described above are divided into first graphic data having the lowest display priority to n-th graphic data having the highest display priority (n is 2 A storage unit for classifying and storing the graphics data as the above (integer), and a pixel corresponding to the position information in n frame image data holding units corresponding to the first to n-th graphics data corresponding to the screen of the display. A first pixel having a pixel value including the color information and the position information by drawing each area.
Drawing means for obtaining the n-th image data;
The display priority of the n-th image data and the first to
An image data synthesizing unit for synthesizing based on the position information included in each pixel value of the n-th image data, and a power distribution system diagram based on the synthesis result image data obtained by the synthesizing process of the image data synthesizing unit are displayed on the display. A distribution system diagram display device, comprising: a display unit for displaying a graphic via an interface. 8. A distribution system diagram display device having a display for displaying a distribution system diagram for distribution system monitoring and control in which a plurality of components such as facility equipment related to the distribution system are represented as a plurality of figures, A plurality of graphic data each having predetermined position information and color information corresponding to the constituent elements described above are divided into first graphic data having the lowest display priority to n-th graphic data having the highest display priority (n is 2 A storage unit for classifying and storing the graphics data as the above (integer), and a pixel corresponding to the position information in n frame image data holding units corresponding to the first to n-th graphics data corresponding to the screen of the display. A first pixel having a pixel value including the color information and the position information by drawing each area.
Drawing means for obtaining the n-th image data;
Based on the position information included in each pixel value of the n-th image data, n-
The second frame image data holding unit
Creating means for respectively creating the second to n-th mask image data for masking only the pixel area where the n-th graphic data exists; the first to n-th image data and the second to n-th mask image data; Image data synthesizing means for synthesizing mask image data in accordance with the display priority,
A distribution system diagram display device comprising: a display unit that graphically displays, via the display, a distribution system diagram based on the synthesis result image data obtained by the synthesis processing of the image data synthesis unit.