JPH0512355A - Drawing data processor - Google Patents

Abstract

PURPOSE:To speed up the redisplaying and retrieval of drawing data of an architectural CAD system, etc. CONSTITUTION:A display data storage part 5 is stored with data records which are actually displayed among a large quantity of drawing data records. In redisplay mode, a display data retrieval part 2 transfers the data records in the display data storage part 5, record by record, to a display record storage part 4 by using a display data control part 3 and sends all display data in the transferred records to a display execution part 6, which redisplays them on the screen of a CRT, etc. Further, when key words regarding elements displayed on the screen are retrieved, the display data retrieval part 2 retrieves corresponding display data in the data records stored in the display data storage part 4; when the corresponding display data is found, the retrieval processing is finished, but when not, the remaining unretrieved data records are transferred, record by record, to the display record storage part 4 from the display data storage part 5 by using a display data control part 3, thus carrying on the retrieval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing data processing apparatus in a CAD system or the like, and more specifically, by separately holding drawing data and display data, the processing efficiency of display data retrieval and redisplay is improved. The present invention relates to an enhanced drawing data processing device.

[0002]

2. Description of the Related Art A system such as a CAD system for architectural planning and design handles a large amount of drawing data.
In many cases, the data displayed on the screen of the CRT or the like during the processing is not all the data in the drawing but a part of the data selected by the user or the like. In addition, the display data selected in this way often needs to be displayed again at a later time.

Therefore, conventionally, the display data can be redisplayed by the configuration shown in FIG. In FIG. 4, 40 is a display control unit, 41 is a drawing data storage unit,
42 is a drawing data search unit, 43 is a display availability determination unit, 44
Is a display execution unit.

The drawing data storage unit 41 is a part for storing all drawing data handled by the system. As shown in FIG. 5, each element data 45 stored here is provided with a display availability identifier 50 at the head thereof.

At the first display, only the element data 45 desired to be displayed among the element data 45 stored in the drawing data storage section 41 is sent to the display execution section 44 and displayed on a screen such as a CRT. At this time, in order to identify which element data is displayed, the displayability identifier 50 of the displayed element data 45 is set to the displayable state.

After that, for example, when the content of the display screen is switched to another content and a redisplay command for displaying the original content is issued again, the display control unit 40 issues a full search request to the drawing data search unit 42.

The drawing data retrieving unit 42 retrieves all the element data from the first element data to the last element data in the drawing data storage unit 41 in order and sends them to the display propriety judging section 43, and the display propriety judging section 43 receives the elements. The state of the data displayability identifier 50 is determined, and if it is element data to be displayed, it is sent to the display execution unit 44.

The display execution unit 44 displays the sent element data on a screen such as a CRT. This causes the original contents to be displayed again.

Further, in such a CAD system, element data may be searched based on a keyword relating to an element displayed on the screen. For example, it is possible to judge which element is designated based on the relationship between the position designated on the screen and the position of each element. Conventionally, such a search has been realized as follows under the configuration of FIG.

When the display control unit 40 receives a search command specifying a keyword, the display control unit 40 passes the keyword to the drawing data search unit 42 to request a search.

The drawing data retrieving unit 42 checks from the first element data of the drawing data storage unit 41 to the last element data in order to determine whether or not the element data has a given keyword. If found, it notifies the display control unit 40.

[0012]

Conventionally, it was possible to retrieve and redisplay drawing data as described above.
There were the following problems.

(1) At the time of re-display, it is necessary to take out all the drawing data handled by the system and judge whether or not the data can be displayed.
It takes a long time to redisplay.

(2) At the time of searching by the keyword related to the element displayed on the screen, it is necessary to search all drawing data handled by the system, and the search time is generally long.

Therefore, a first object of the present invention is to enable redisplay to be performed efficiently.

A second object of the present invention is to enable efficient retrieval by a keyword relating to an element displayed on the screen.

[0017]

In order to achieve the above-mentioned first object, the present invention provides a display data storage unit for storing all the data records to be displayed among the data records stored in the drawing data storage unit. A display record storage unit that stores one data record of the data records stored in the display data storage unit, and display data that transfers one data record stored in the display data storage unit to the display record storage unit When a redisplay request is made by the management unit, all display data in the data records stored in the display record storage unit is sent to the display execution unit, and an unsent data record is transferred by using the display data management unit. Sending all display data in the displayed data record to the display execution unit, all display in all data records stored in the display data storage unit And a display data search unit to continue over data until you sent to the display execution unit.

In order to achieve the second object of the present invention, when a search request is made, the display data search section is configured to display the corresponding display data from the data records stored in the display record storage section. The configuration is such that the search, the transfer of the unsearched data record using the display data management unit, and the search of the corresponding display data in the transferred data record are continued until the corresponding display data is found.

[0019]

In the drawing data processing apparatus of the present invention, the display data storage unit stores all the data records to be displayed among the data records stored in the drawing data storage unit, and the display record storage unit is the display data storage unit. One of the data records stored in is stored. In other words, since only the displayed data is stored in the display data storage unit, when a redisplay request is made, the display data search unit executes the display of all display data in the data records stored in the display record storage unit. To the copy section, transfer of unsent data records using the display data management section,
Re-display by continuing sending all display data in this transferred data record to the display execution unit until sending all display data in all data records stored in the display data storage unit to the display execution unit To enable.

Further, when a search request is made by a keyword relating to an element displayed on the screen, the display data search unit searches for the corresponding display data from the data records stored in the display record storage unit, and within this range. If the corresponding display data is found, the search process is terminated, and if not found, the display data management unit is used to transfer the next unsearched one data record from the display data storage unit to the display record storage unit. Search the corresponding display data from the data record. After that, the above-mentioned transfer and search are repeated until the corresponding display data is found.

[0021]

Embodiments of the present invention will now be described in detail with reference to the drawings.

Referring to FIG. 1, a drawing data processing apparatus according to an embodiment of the present invention includes a display control unit 1, a display data search unit 2, a display data management unit 3, and a display record storage unit 4.
A display data storage unit 5 and a display execution unit 6.

The display control unit 1 is a unit for receiving various commands such as a redisplay command and a search command designating a keyword and controlling each unit.

The display execution section 6 is a section for displaying data on a screen such as a CRT.

The display data storage unit 5 is a CRT among a large number of drawing data records stored in a drawing data storage unit (not shown) included in a CAD system for planning and designing a building to which the drawing data processing apparatus of this embodiment is applied. It is a storage unit for storing the data record displayed on the screen such as.

The display record storage unit 4 is a storage unit for storing any one data record among the data records stored in the display data storage unit 5.

The display data retrieving unit 2 retrieves all the display data from all the data records stored in the display data storing unit 5 at the time of a retrieval request from the display control unit 1 via the display record storing unit 4. In addition to performing the search, the display control unit 1 searches the display data in the data record with the given keyword.

As shown in FIG. 2, the display data search section 2 internally has a search start address 21 and a search-in-progress address 2.
2 and 2 are used to control the fetch range or the search range.

The search start address 21 indicates the address of the display record storage unit 4 that has started the extraction or search, and the searching address 22 indicates the address of the display record storage unit 4 that is currently extracted or is being searched. Searching address 22
Is stepped over when it has finished referencing for retrieval or retrieval. In addition, the searching address 22 is the display record storage unit 4
The last address of is changed to point to the first address.

The display data retrieval unit 2 retrieves the display data of each address in the display record storage unit 4 until the retrieval start address 21 and the retrieval address 22 become the same at the time of the retrieval request, and then the display data management unit 3 When the display data management unit 3 transfers the next data record in the display data storage unit 5 in response to the request, the same fetch processing is performed for this data record.

When a search request is issued, the display data search unit 2
If the corresponding display data is found, the display data is sent to the display control unit 1 to end the search, but if the search start address 21 and the searching address 22 are not found, the display data management unit 3 When the display data management unit 3 transfers the next data record in the display data storage unit 5 in response to the request, the same search is repeated for this data record.

When there is a transfer request from the display data retrieving unit 2, the display data managing unit 3 retrieves the unretrieved or unretrieved data records stored in the display data storing unit 5 on a record-by-record basis. 4 is a part to be transferred.

As shown in FIG. 3, the display data management unit 3 holds a search start record number 31, a search record number 32, and a management table 33, and uses these to control the transfer range. .

The management table 33 includes the display data storage unit 5
3 is a table that holds the id number of each data record stored in and the total number of display data included in the data record.

The search start record number 31 is information indicating the entry of the management table 33 corresponding to the data record stored in the display record storage unit 4 at the start of retrieval or search, and the record number during search 32.
Is information indicating the entry of the management table 33 corresponding to the data record currently stored in the display record storage unit 4.

When the display data management unit 3 receives the transfer request from the display data search unit 2, the display data management unit 3 checks the display data total number of the entries next to the entry in the management table 33 indicated by the searched record number 32, and the display data exists. In this case, the display data included in the data record corresponding to the same entry is transferred from the display data storage unit 5 to the display record storage unit 4. If the total number of data is 0, the display data included in the data record corresponding to the first entry of the management table 33 is transferred from the display data storage unit 5 to the display record storage unit 4. Search start record number 3
When 1 and the searched record number 32 become the same, the transfer of all data is completed, so that is indicated to the display data search unit 2
To notify.

Next, the operation of this embodiment configured as described above will be described.

At the time of first display, C is selected from the large number of drawing data records stored in the drawing data storage unit (not shown).
Only the display data in the data record desired to be displayed on the screen such as RT is sent to the display execution unit 6. At this time, those data records are stored in the display data storage unit 5, and the management table 33 of the display data management unit 3 is stored according to the storage.
Is set.

After that, for example, when the content of the display screen is switched to another content and a redisplay command for displaying the original content again occurs, the display control unit 1 requests the drawing data search unit 2 to take out (all search request). Give out.

The display data retrieving unit 2 retrieves the retrieving address 2
2 is initially set to be equal to the search start address 21, and the display data stored in the entry of the display record storage unit 4 pointed to by the search address 22 is taken out and sent to the display execution unit 6, and the search address 22 Step display, display record storage unit 4 pointed to by the searching address 22 after stepping
By repeating the retrieval of the display data stored in the entry and the transmission to the display execution unit 6 until the searching address 22 becomes the same as the search start address 21, all the display data stored in the display record storage unit 4 is displayed. The data is taken out and sent to the display execution unit 6.

When the display data search unit 2 finishes sending all the display data stored in the display record storage unit 4, it issues a transfer request start instruction to the display data management unit 3.

The display data management unit 3 initializes the retrieved record number 32 to be equal to the retrieved start record number 31, then advances the retrieved record number 32, and retrieves the retrieved record number. The display data total number in the entry of the management table 33 indicated by 32 is checked. Then, if the total number of display data is not 0, the display data in the data record of the display data storage unit 5 corresponding to the same entry is transferred to the display record storage unit 4, and the completion of transfer is notified to the display data search unit 2. Also, the total number of display data is 0
If so, the searched record number 32 is set to the management table 33.
The display data in the data record of the display data storage unit 5 corresponding to the same entry is transferred to the display record storage unit 4, and the display data search unit 2 is notified of the completion of the transfer.

The display data retrieving unit 2 performs the same processing as described above on the display data for one data record stored in the display record storing unit 4 by the above transfer, and causes the display executing unit 6 to retrieve the current 1 Sends all display data in the data record. Then, the display data management unit 3
To the restart request of the transfer request.

The display data management unit 3 advances the record number during retrieval 32 and performs the same processing as described above, and stores the display data for the next one data record that has not yet been extracted from the display data storage unit 5 into the display record storage unit 5. Transfer to section 4. And
The display data search unit 2 performs the same processing as described above on the transferred display data of one data record, and displays all the display data in the current one data record in the display execution unit 6
Send to.

When the transfer request issued from the display data retrieving unit 2 is instructed to retrieve and send the display data, the display data managing unit 3 makes the retrieving record number 32 after stepping equal to the retrieving start record number 31. It ends when it is recognized that it has become.

By performing the above processing,
The original content is redisplayed on the screen, and the redisplay processing ends.

Next, the operation at the time of searching by the keyword relating to the element on the screen will be described.

When the display control unit 1 receives a search command specifying a keyword, the display control unit 1 sends the keyword and requests the display data search unit 2 to perform a search.

The display data retrieving unit 2 retrieves the retrieving address 2
2 is initially set to be equal to the search start address 21, and it is checked whether or not the display data stored in the entry of the display record storage 4 pointed to by the searching address 22 is the corresponding display data. Then, if it is the corresponding display data, it is passed to the display control unit 1 and the search processing is ended.

If the display data is not the corresponding display data, the step goes to the searching address 22 and whether the display data stored in the entry of the display record storage unit 4 pointed to by the searching address 22 after the stepping is the corresponding display data. Find out. Less than,
The corresponding display data can be found, or the searching address 22
The same processing is continued until becomes equal to the search start address 21.

When the corresponding display data is not found within the range of the display data stored in the display record storage unit 4, the display data search unit 2 issues a transfer request start instruction to the display data management unit 3.

The display data management section 3 initializes the retrieved record number 32 to be equal to the retrieved start record number 31, then advances the retrieved record number 32, and retrieves the retrieved record number. The display data total number in the entry of the management table 33 indicated by 32 is checked. Then, if the total number of display data is not 0, the display data in the data record of the display data storage unit 5 corresponding to the same entry is transferred to the display record storage unit 4, and the completion of transfer is notified to the display data search unit 2. Also, the total number of display data is 0
If so, the searched record number 32 is set to the management table 33.
The display data in the data record of the display data storage unit 5 corresponding to the same entry is transferred to the display record storage unit 4, and the display data search unit 2 is notified of the completion of the transfer.

The display data search unit 2 performs the same search processing as described above on the display data for one data record stored in the display record storage unit 4 by the above transfer.
Then, if the corresponding display data is found, it is passed to the display control unit 1 to end the search processing, and if not found, a display data management unit 3 is instructed to restart the transfer request, and in response thereto, the display record storage unit 4 is issued. The same search processing as described above is performed on the display data of one data record stored in. The above processing is continued until the corresponding display data is found.

[0054]

According to the drawing data processing apparatus of the present invention described above, the following effects can be obtained.

(1) Since the drawing data and the display data are separated and the data to be displayed is stored in the display data storage unit, all the display data stored in the display data storage unit are displayed when redisplaying. Re-display can be done simply by sending it to the department, and re-display can be performed efficiently and at high speed.

(2) Compared with the prior art in which all drawing data are set as the search range, the search is performed by using the keyword related to the element displayed on the screen as the search range of the display data stored in the display data storage section. The search time can be shortened.

(3) In particular, one of the data records stored in the display data storage unit is transferred to the display record storage unit, and the search is performed by displaying the data records stored in this display record storage unit. Since it starts from the data, when the display data in the same data record is continuously searched, the search can be performed at extremely high speed.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a display data search unit.

FIG. 3 is an explanatory diagram of a display data management unit.

FIG. 4 is a block diagram of the prior art.

5 is an explanatory diagram of element data 45 of FIG. 4. FIG.

[Explanation of symbols]

1 ... Display control unit 2 ... Display data search section 3 ... Display data management unit 4 ... Display record storage 5 ... Display data storage 6 ... Display execution unit

Claims (3)

[Claims] 1. A display data storage unit for storing all data records to be displayed among the data records stored in the drawing data storage unit, and one data record of the data records stored in the display data storage unit. A display record storage unit for storing, a display data management unit for transferring one data record stored in the display data storage unit to the display record storage unit, and a data stored in the display record storage unit at the time of a redisplay request Sends all display data in the record to the display execution unit,
Transfer of an untransmitted data record using the display data management unit, transmission of all display data in the transferred data record to the display execution unit, among all data records stored in the display data storage unit. A drawing data processing device comprising: a display data search unit that continues until all display data is sent to the display execution unit. 2. When a search request is made, the display data search unit is
Retrieving the corresponding display data from the data records stored in the display record storage unit, transferring unretrieved data records using the display data management unit, retrieving the corresponding display data from the transferred data records. The drawing data processing apparatus according to claim 1, wherein the process is continued until the corresponding display data is found. 3. The display data search unit controls a search range using a search start address and a search-in-progress address, and the display data management unit controls a search start record number, a search-in-progress record number, and the display data storage unit. 3. The drawing data processing apparatus according to claim 2, wherein the drawing data processing apparatus is configured to control the transfer range by using the management table having the id number of the data record and the total number of data contained in the data record stored in.