JPH05205014A - Image data processing method - Google Patents

Abstract

PURPOSE:To shorten the image data processing time and at the same time to reduce the capacity of an image data file. CONSTITUTION:An image data processor 1 is provided with an image data file 2 which store the image data serving as the document data at every page, a page information table 3 which records the control information showing the document names of the image data and the receiving state of each page, an image data processing part 4 which visualizes the image data for each page, an input/output part 7 which transfers the image data to the file 1 for each page, a 1st receiving part 8 which receives the image data requested to another information processing system, a 2nd receiving part 9 which receives the image data to be processed next while the part a is kept in pause, and a control part 6 which controls the operations of the parts 7-9 based on the control information recorded on the table 3. In such constitution, the image data are received and processed in parallel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data processing system, and more particularly to an image data processing system for receiving document data including image data from another information processing system.

[0002]

2. Description of the Related Art Recently, in information processing systems, image data such as graphics and image data are directly subjected to processing, so that there is an increasing demand for image data transmission.
In order to cope with this demand, image data transmission has been performed by a data transmission method (HDLC transmission or the like) which has been applied to code data transmission until now. That is, the first is a method of sequentially transmitting image data required by the information processing system of the other party each time a request is made. The second is a method of collectively transmitting in advance the image data required by the information processing system of the other party.

[0003]

In the first method of image data transmission described above, since the transmission and processing of image data is a series of operations, it takes a long time to complete the processing of image data. In addition, the second method inevitably increases the capacity of files that collectively store image data.

An object of the present invention is to provide an image data processing system capable of performing image data processing and image data reception in parallel.

[0005]

According to the image data processing method of the present invention, an image data file having a storage area for a plurality of pages so that the image data as document data can be stored page by page, and the image data file includes A page information table that records management information indicating a document name that is a name of the stored image data and a reception state for each page, an image data processing unit that visualizes the image data in page units, and the page Input / output means for exchanging the image data in units of the image data file, first receiving means for receiving the image data in page units requested to be received by another information processing system, and the first receiving means. When the receiving means stops the receiving operation, the next page unit Second receiving means for receiving a Jideta from the other information processing system, said input means,
Image data in page units requested by the image data processing means, including control means for controlling operations of the first receiving means and the second receiving means based on the management information of the page information table. When performing the visualization process, the control means, based on the page information table, recognizes from the image data file that the requested image data of the page unit is registered in the image data file. When the image data requested to be read in the image data file is recognized as not being registered, the image data is read out through the input / output unit and transferred to the image data processing unit. The first receiving means corresponds to the other information processing system. Image to perform the reception request data,
The received image data in page units is stored in the image data file via the input / output unit, the management information is registered in the page information table, and the receiving operation of the first receiving unit is stopped. The receiving operation of the second receiving means is started to continuously receive the next image data of the page unit, and the requested image data of the page unit is transferred to the image data via the input / output means. It is read from a file and transferred to the image processing means.

Further, in the image data processing method of the present invention, the image data file has a storage area for two pages, and the storage areas for two pages are provided in the first receiving means and the second receiving means. It is also possible to adopt a configuration in which one of the above is used alternately.

[0007]

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

1, FIG. 2 and FIG. 3 showing an embodiment of the present invention.
Referring to FIG. 4 and FIG. 4, the image data processing device 1 is included in an information processing system, and stores an image data file 2 for storing image data in page units, and an image data file stored in the image data file 2 for each page. A page information table 3 for recording management information indicating a receiving state, an image data processing unit 4 for reading image data page by page from the image data file 2 for visualization processing, and a page information table for image data from another information processing system. An image data control unit 5 that controls data reception based on the management information of No. 3 of FIG. Further, the image data control unit 5 controls the first receiving unit and the second receiving unit, which will be described later, based on the management information of the page information table 3, and the input / output unit for exchanging the image data with the image data file 2. Output unit 7,
A first receiving unit 8 that receives the image data at the request of the image data processing unit 4, and a second receiving unit that continuously receives the image data when the operation of the first receiving unit 8 is stopped.
And a receiving unit 9 of.

FIG. 2 is a flow chart for explaining the operation when the image data processing unit 4 requests an arbitrary page of new document data. When the image data processing unit 4 requests reception of an arbitrary page of new document data, the control unit 6 scans the page information table 3 and determines that it is a page of unregistered document data. The receiving unit 8 makes a data reception request for new image data (processing step 11).

The first receiving unit 8 performs received data processing of data received in a block which is a unit of data transmission (1
2), END indicating the end point of one page of image data
Check the mark (13). If there is no END mark, the input / output unit 7 registers the received data in the image data file 2 (14). Then, the control unit 6 records the management information in the page information table 3 (15) and performs the received data processing for each received data block of the image data (12 to 15 and 17). When the END mark indicating the end point of one page of the image data is detected (13), the control unit 6 stops the operation of the first receiving unit 8 and the second receiving unit 9 stops.
Data reception (16) is started, a data reception request for the next page is issued to another information processing system, and image data reception is continued (12 to 15 and 17).

When an overflow of the image data file 2 is detected by the input / output unit 7 (17), when the first receiving unit 8 receives the data (18), the control unit 6 controls the page information table 3 by using the management information. Scan 6 to find the page with the page number farthest from the page number of the page to be stored, delete the image data from the image data file 2, and free the page (20
And 21).

Then, the input / output unit registers the received data in the empty page as a file (14). When an overflow occurs (17), if the second receiving unit 9 is operating, the control unit 6 interrupts the operation and ends the series of processes (19).

FIG. 3 is a flow chart for explaining the operation when the image data processing unit 4 requests and processes an arbitrary page of other image data while the second receiving unit 9 is receiving the image data. At the request of the image data processing unit 4, the control unit 6 checks the page information table 3 to see if the requested page is registered in the image file 2 (31). The requested page is read from the file 2 and the read page is input to the image data processing unit 4 (3
2). Furthermore, when the data of the requested page has been received in the page information table 3 (33) and the second receiving unit 9 has stopped operating (41), the control unit 6 outputs the second receiving unit 9
Operation is restarted (42) and the image data of the next page of the requested page is received. Then, the control unit 6 causes the second receiving unit 9 to perform a data receiving process (34), and END
Until the mark is detected (35), the received data is registered in the image data file 2 via the input / output unit 7 (36), and recording of the management information in the page information table 3 is repeated (34, 35). , 36 and 3
7). In the data receiving operation (34 to 37) described above, when the control unit 7 detects the END mark (35) and the second receiving unit 9 does not stop the operation (41), the control unit 6
Ends the data receiving operation of the second receiver 9.

When the page requested by the image data processing unit 4 is registered in the image data file 2 but has not been received yet (33), the control unit 6 interrupts the operation of the second receiving unit 9 (39), Further, the first receiving unit 8 is operated to make a data reception request (40) and a data reception process (34).
Is performed on the unreceived block of the requested page, and when the END mark of the requested page is detected (35), the data receiving operation of the first receiving unit 8 is ended.

When the page requested by the image data processing unit 4 is not registered in the file (31), the control unit 6 sets the second
If the receiving unit 9 is operating (38), the second receiving unit 9
The operation of (1) is interrupted (39), and the first receiving unit 8 is operated to request data reception (40). When the second receiving unit 9 is not in the receiving operation (38), the control unit 6 operates the first receiving unit 8 to request the data reception (40). The control unit 6 performs a receiving process (34) of the data received by the first receiving unit 8, detects the END mark of the requested page (35), and ends the data receiving operation.

Further, when the image data processing unit 4 updates or adds an arbitrary page of the registered image data file 2, in the flowchart shown in FIG. 3, reception processing of a page not registered in the image data file 2 (31
And 38), the operation of the second receiving unit 9 is interrupted,
The first receiving unit 8 is operated to make a data reception request for an update or addition request page (40).

FIG. 4 shows the page information table 3 in FIG.
It is a figure which shows the content of. The page information table 3 includes the names (document names) 51 of a plurality of documents of the image data registered in the image data file 2, a page number 52 for the reception status of each page of each document data, and a block serial number 53 for which the data has been received. And management information including a flag (reception / interruption / reception completed) indicating the reception state 54 of the page. The page information table 3 is updated by the control unit 6 each time a transmission block of image data is received and data reception processing is performed.

In the data transmission, the image data and the code data can be transmitted without distinguishing them from each other, so that the same can be performed even for the document data including the image data and the code data. Further, the same operation can be performed even if the image data file 2 is provided for only two pages. In this case, the data is received by the so-called double buffer, and the first receiving unit 8 and the second receiving unit 8 receive the data.
The receiving section 9 alternately and cyclically uses the storage areas of two pages of the image data file 2 one by one, thereby receiving and processing the image data in parallel.

[0019]

As described above, according to the present invention,
By always receiving the image data corresponding to the page preceding the page in which the image data is being processed so that the image data processing and the image data reception are performed in parallel, the delay of the image data processing due to the image data reception time is prevented. be able to.

Further, by vacating the pages of the image data file which has undergone the image data processing and reusing the pages of the image data file, the capacity of the image data file can be reduced.

[Brief description of drawings]

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

FIG. 2 is a flow chart when receiving new document data in the same embodiment.

FIG. 3 is a flow chart when receiving image data of an arbitrary designated page of an arbitrary file in the embodiment.

FIG. 4 is a diagram showing a configuration of a page information table in the example.

[Explanation of symbols]

1 image data processing device 2 image data file 3 page information table 4 image data processing unit 5 image data control unit 6 control unit 7 input / output unit 8 first receiving unit 9 second receiving unit 51 document data of page information table Document name 52 Page number of document data in page information table 53 Data transmission block serial number of document data in page information table 54 Page receiving state of document data in page information table

Claims (2)

[Claims] 1. An image data file having a storage area for a plurality of pages so that image data as document data can be stored in page units, and a document name which is the name of the image data stored in the image data file. And a page information table for recording management information indicating a reception state for each page, image data processing means for visualizing the image data in page units, and the image data in page units for exchanging with the image data file. I / O means, first receiving means for receiving the image data in page units requested to be received by another information processing system, and when the first receiving means stops the receiving operation, Receive the image data in page units from the other information processing system The image data includes: a second receiving unit; and a control unit that controls operations of the input / output unit, the first receiving unit, and the second receiving unit based on the management information of the page information table. When performing the visualization process of the image data of the page unit requested by the processing unit, the control unit registers the requested image data of the page unit in the image data file based on the page information table. If it is recognized that the corresponding image data is read from the image data file through the input / output unit and transferred to the image data processing unit, the image data of the page unit requested in the image data file. Is recognized as not being registered in the first receiving means. Requesting the information processing system to receive the corresponding image data, storing the received image data in page units in the image data file via the input / output means, and managing the page information table in the page information table. Information is registered, the receiving operation of the first receiving means is stopped, and the receiving operation of the second receiving means is started to continuously receive the image data of the next page unit, and the request is made. An image data processing method, wherein the image data in page units is read from the image data file via the input / output unit and transferred to the image data processing unit. 2. The image data file has a storage area for two pages, and causes the first receiving means and the second receiving means to alternately use the storage areas for the two pages, respectively. The image data processing method according to claim 1, wherein