JPH02236780A - Picture display device - Google Patents

Abstract

PURPOSE:To search a desired document efficiently from the plural routine documents of the same format by designating the prescribed area of document data to be displayed on a CRT display, setting a picture processing condition for each area, converting the document data to be displayed according to this picture processing condition and displaying the data. CONSTITUTION:A picture processing module 30 is composed of an enlarging/ reducing circuit 34 of picture data, longitudinal and lateral conversion circuit 35, compressing and extending circuit 36 to execute the compression and enlargement of the picture data or the like. In a CPU 12, a vector/raster conversion circuit 12a and a code/image conversion circuit 12b are provided and the former converts vector data as drawing data into raster data or executes inverse conversion. The picture processing condition is set for each designated prescribed area and picture information are converted and displayed according to this picture processing condition. Thus, when the plural routine documents of the same format are displayed at high speed, the point of sight is not disturbed and further, the document can be easily observed. Then, the desired document can be efficiently searched.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image display device used, for example, in an electronic filing bag storage, etc., which processes data using an optical disk.

(Prior Art) In this type of electronic filing device, when displaying document data retrieved from a storage device on a display device, the entire document data is enlarged or reduced so that it fits within the screen of the display device; Displays a fixed range that can be seen within the screen of the display device.

Therefore, when registering a document, if there is trash etc. manually added to the surrounding area, when searching and displaying this document data,
Naturally, documents with garbage will be displayed.

In addition, when searching for a desired document by performing a so-called page-turning search display that quickly displays multiple fixed-format documents with the same format,
Particularly when making a decision by looking at only a portion of document data, there is a drawback that if an extra portion is displayed, the point of view is disturbed and it is not possible to search efficiently.

In addition, if we assume that you are searching for several documents in the same format, such as resumes, from a storage device, and are looking for a specific person by enlarging the face photo in the resume, image processing will be required. In the case of value conversion processing, image quality deterioration such as moiré occurs, and photographic parts become difficult to see.

Therefore, when displaying a plurality of fixed-form documents having the same format at high speed, the point of interest may be disturbed or difficult to see, making it impossible to efficiently search for the desired document.

(Problems to be Solved by the Invention) This invention solves the problem that when displaying multiple fixed-form documents with the same format at high speed, the point of view may be disturbed or difficult to see, making it difficult to efficiently search for the target document. This eliminates the drawback that it is not possible to display multiple fixed-format documents in the same format at high speed without disturbing the point of interest and making them easier to see.
An object of the present invention is to provide an image display device that can efficiently search for a target document.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a display means for displaying image information, a designation means for designating a predetermined area of the image information to be displayed on the display means, and a region designated by the designation means. a setting means for setting image processing conditions for each predetermined area; a conversion means for converting image information displayed on the display means according to the image processing conditions set by the setting means; and image information converted by the conversion means. The display control means includes display control means for displaying on the display means.

The present invention also provides a display means for displaying image information, a specifying means for specifying a predetermined area of the image information to be displayed on the display means, and whitening as an image processing condition for each predetermined area specified by the specifying means. A setting means for setting processing, black painting processing, binary processing, dither processing, black and white inversion processing, or blurring processing, white painting processing or black painting processing set by the above setting means for image information displayed on the display means , a conversion means for converting according to binary processing, dither processing, black-and-white inversion processing, or blurring processing, and display control means for displaying image information converted by the conversion means on the display means. White-painting processing, black-painting processing, binary processing, dither processing, black-and-white reversal processing, or blurring processing (function) This invention specifies a predetermined area of image information to be displayed on a display means, and processes the specified predetermined area. Setting image processing conditions for each region by a setting means, converting image information displayed on the display means according to the image processing conditions set by the setting means, and displaying the converted image information on the display means. This is how it was done.

Further, the present invention specifies a predetermined area of image information to be displayed on a display means, and sets image processing conditions for each specified predetermined area such as white painting processing, black painting processing, binary processing, dither processing, black and white processing, etc. Inversion processing or blurring processing is set by the setting means, and the image information displayed on the display means is subjected to white painting processing, black painting processing set by the setting means, 2
The image information is converted according to value processing, dither processing, black and white inversion processing, or blurring processing, and the converted image information is displayed on the display means.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows the hardware of an electronic filing device as a code/image filing device of the present invention. That is, the electronic filing device includes a control module 11, a memory module 10, an image processing module 30, a communication control module 31, and a scanner 20.
, optical disk device 22, keyboard 23, CRT display 24, printer 25, magnetic disk device 27, magnetic disk device 28, mouse 29, system bus 41,
and an image bus 42.

The control module 11 includes a CPU 12 that performs various controls.
, and the optical disk device 22 and the magnetic disk device 2
7. It is composed of an interface circuit 17 for connecting the magnetic disk device 28 and the CPU 12, etc. Above CPU! 2, the keyboard 23 and mouse 29 are connected.

The memory module 10 includes a main memory 13, an A4
It is comprised of a page memory 14 as an image memory having a storage capacity corresponding to image data for several pages of original size, a display memory 15 as a display interface, a display control section 16, and the like.

A part of the page memory 14 includes a buffer memory 14
A is provided. Writing and reading from this buffer memory 14a are controlled by a counter (not shown).

The image processing module 30 includes a scaling circuit 34 that scales up and down the image data, a vertical/horizontal conversion circuit 35 that rotates the image data by changing the vertical/horizontal direction, and compresses (reduces redundancy) and expands (reduces redundancy) the image data. A compression/expansion circuit (CODEC) 36 as a compression/expansion means for restoring the reduced redundancy, a scanner interface 37 for the scanner 20, a printer interface 38 for the printer 25, an enlargement/reduction circuit 34, and an aspect/horizontal conversion circuit. 35, an internal bus 39 that connects a compression/expansion circuit 36, a scanner interface 37, and a printer interface 38.

The communication control module 31 includes an FCP (Facsimile Connection Mechanism) (not shown) and a UCP (Universal Communication Processor) 43 connected to external equipment such as a personal computer via an interface (RS-232C, GPIB, SCSI). and a BCP (bus communication processor) 44 connected to a LAN (local area e-network).

The CPU 12 includes a vector rask conversion circuit 12a.
and a code/image conversion circuit 12b. The vector/rust conversion circuit 12a converts vector data as drawing data from a floppy disk 28a, which will be described later, into raster data (image data) and vice versa.

The code/image conversion circuit 12b converts code data (document data) from a floppy disk 28a, which will be described later, into image data and vice versa.

Note that these vector rask transformations and code image transformations can be performed not only by hardware but also by software.

The system bus 41 is a bus for control signals, and connects the control module 11, the memory module 10, the image processing module 30, and the communication control module 31. Further, the image bus 42 is a bus for image data, and is designed to connect the memory module 10, the image processing module 30, and the communication control module 31.

The display memory 15 includes the CRT display 24
The image data actually displayed in the window, that is, the image data obtained by enlarging, reducing, rotating, inserting, or inverting the black and white of the image data in the page memory 14 is stored.

The scanner 20 is, for example, a two-dimensional scanning device, and is a document (
By scanning the document (document) two-dimensionally with a laser beam, an electrical signal corresponding to the image data on the document is obtained.

The magnetic disk device 28 is a floppy disk storage using, for example, a 5.25-inch floppy disk 28a, and includes text files (document data) created with a word processor (not shown), CAD drawing files (document data) created with a personal computer (not shown), and work files. This is for reading a code data file such as a single file (drawing data) from the floppy disk 28a. The floppy disk 28a can be formatted based on various OS (operating systems).

The optical disk device 22 transfers image data read by the scanner 20 or code data read by the magnetic disk device 28 to an optical disk (storage medium).
9 are stored sequentially.

The keyboard 23 is used to input unique search codes and various operation commands corresponding to the code information and image data stored on the optical disc 19. The CRT display 24 is an output device, such as a cathode ray tube display device, which is a display device, and displays image data read by the scanner 20, code data read from the magnetic disk 28, or code data read from the optical disk device 22. Alternatively, it is used to display image data or the like.

The CRT display 24 is capable of displaying four documents simultaneously using a maximum of four windows. For example, four pieces of document data are displayed. Editing such as enlargement, reduction, rotation, scrolling, etc. of document data can be performed independently for each window.

The printer 25 receives image data read by the scanner 20, code data read from the floppy disk 28a, code data read from the optical disk device 22, image data, image data displayed on the CRT display 24, etc. Printout (printout)
In other words, it is output as a hard copy.

The magnetic disk device 27 is a hard disk device, and the magnetic disk 27a attached to the magnetic disk device ff27 stores various control programs, as well as a search code input from the keyboard 231; Code data for one case corresponding to
Search data (management data) is stored, which includes a storage address on the optical disk 19 where image data is stored, a data size, a flag for identifying whether it is code data or image data, and the like. Further, the code data and image data for each case are stored in the search data area of the optical disc 19.

The storage address is a logical address, from which a physical track address and a physical sector address are calculated at the time of access.

The mouse 29 is a pointing device, for example, by arbitrarily moving the cursor on the CRT display 24 vertically or horizontally and giving an instruction at a desired position, the displayed content at which the cursor is located ( For example, various modes, editing images, cut and paste ranges, icons, etc.) are selected.

Next, how image data and code data are managed in a unified manner will be explained from the perspective of document management.

In other words, the document management system in this embodiment has four parts: cabinet, binder, document, and page, as shown in Figure 2.
It has a hierarchy, and each cabinet is associated with one side of the optical disc 19. A maximum of 8 binders can be defined in a cabinet, and a maximum of 30,000 binders can be defined within a binder.
You can register up to 100 documents. Each document has a title, and its structure is defined for each binder. The above document is the basic unit of a file, and in addition to the title, annotations (explanation of the document) can be added.

Further, a document is composed of up to 4095 pages.

This kind of management system takes into account consistency with paper files, and a page corresponds to one paper file, and this information processing device also manages code data at the level of this page. It has become.

That is, the page is image data for one sheet of paper, data for one floppy disk (volume batch data), one file data, or data that is a combination of the above three types.

As a result, for example, as the first page in one document,
Source files of a given program (code data)
, the second page shows the program specifications (code data) created with a word processor, and the third page shows the processing results (image data). Can be managed effectively.

Next, the structure of the control program, ie, software, stored in the main memory 13 will be explained with reference to FIG.

The filing processing section 51 controls the entire system, and is composed of a search section 311, a registration section 312, a deletion section 313, a correction section 314, and a maintenance section 315. The database unit 52 manages the title of each document and the address, size, etc. of the actual data on the optical disc 19. The document data display unit 53 displays document data in the window of the CRT display 24, and the document data management unit 54
manages each document data stored in the page memory 14. The document data output unit 55 is connected to an optical disk 19 for recording and reproducing document data, a scanner 20 for inputting document data, a printer 25 for outputting document data, a floppy disk 28a for recording and reproducing code data, and an external device via LAN. It controls document data input/output devices such as the BCP 44 that transmit and receive document data between the two. The code/image conversion unit 56 converts code data such as CAD data into image data. The mask processing unit 57 performs mask processing such as masking or trimming on document data.

When this information processing device is powered on, control first passes to the filing processing section 51, and after each initialization process is performed, the CRT display 24 displays 1: Search, 2: Registration, 3: Delete, The information 4: Modification, 5: Maintenance is displayed, prompting the operator to select one of these five processes. When the operator selects one of the displayed information using the keyboard 23 or mouse 29, the filing processing section 51 transfers control to one of the search section 311 to maintenance section 312 depending on the selected information. Ru.

The search unit 311 searches the database unit 52 for document data that satisfies the search conditions input by the operator, and displays a list of corresponding document titles (keywords) on the CRT display 24. Thereafter, when the operator inputs a document title using the keyboard 23, the document data corresponding to this document title is transferred to the optical disk device 22 or via the LAN to an optical disk provided in another information processing device (not shown). Searched from 19. The retrieved document data is displayed on the CRT display 24 or printed by the printer 25 according to the operator's instructions. Furthermore, if the retrieved data is code data, processing is performed to output it to the floppy disk 28a.

The registration unit 312 registers the scanner 20 according to instructions from the operator.
The document data inputted from the floppy disk 28a or the document data (code data) inputted from the floppy disk 28a are stored on the first disk 19, or stored on the optical disk 19 of an information processing device (not shown) via the LAN. Further, the title of the document (11 words) input by the operator from the keyboard 23 is registered in the database unit 52. This document title is used when searching document data.

The deletion unit 313 deletes the document title stored in the database unit 52 in accordance with the document to be deleted as instructed by the operator.

The modification unit 314 selects document data to be modified according to an operator's instruction, and modifies the document title stored in the database 52.

Selection of document data in the deletion section 313 and correction section 314 is performed by the search section 311.

The maintenance section 315 performs initialization processing of the optical disc 19 and the like.

Next, a case where the search process is selected by the operator will be described.

When control is transferred to the search unit 311, the search unit 311
“Which optical disk drive?” appears on the CRT display 24.
:'' is displayed, and the operator is asked which document data in the optical disk 19 set in which optical disk drive is to be searched. When the operator inputs the optical disc drive number, the search unit 311 accesses the optical disc 19 and the database unit 52, reads the binder name defined in the optical disc 19, and displays a list of binder names on the CRT display 24. At the same time, the message "Which binder?" is displayed.

When the operator specifies a binder number using the keyboard 23 or mouse 29, the search section 311 obtains the document title structure of this binder from the database section 52, and displays it on the CRT display 24 as shown in FIG.
Display search window RW. This search window RW displays a search condition input table for inputting search conditions.

The operator inputs search conditions into this table and instructs to start the search. The initial value of the search condition input table is all "*", and the total number of documents in the current binder is displayed at the bottom of the search condition input table.
"Number of applicable items" is displayed. In this example, "Number of matching items: 100 J."

For example, the operator may enter "〉-19870401J" as the "search condition" in the "key name" section of "date of birth".
If you input this and instruct to start a search, the database unit 52 is requested to perform a search process based on this condition, and the database unit 52 searches for the number of document data related to people born after April 1, 19B7. and “
It is displayed in the "Number of matching items" section.

'On the CRT display 24, in addition to the search window RW in which the search condition input table shown in FIG. 4 is displayed, a document display window DW shown in FIG. 5 is displayed. The created document data will be displayed. Display of this document data is performed by the document data display section 53, and by instructing "display document" in the search window RW with the mouse 29, the corresponding document data currently being searched is displayed in the document window. be able to.

When "document display" is instructed by the operator, the search section 311 obtains the start address and data length of the corresponding document data in the optical disk 19 from the result of requesting the database section 52 for search processing, and displays the document data. Input/output section 5
5, the document data is inputted from the optical disk 19 and stored in the page memory 14. The document data stored in the page memory 14 is managed by a document data management section 54 shown in FIG. That is, document data stored in the page memory 14 is attached with a page memory index (hereinafter referred to as PMID), and is identified by this PMID. The search unit 311 displays the PMI in the document data display unit 53.
D and displays the document data in the document display window DW.

That is, the document data display section 53 displays the P from the page memory 14.
Document data corresponding to the MID is retrieved and this document data is transferred to the display memory 15. The document data stored in the display memory 15 is displayed on the CRT display 24.

At the bottom of the document display window DW shown in Figure 5, multiple menus such as "Next Document", "Previous Document", and "Mask Settings" are displayed, and the following processes are executed by specifying these menus. .

"rth document" displays the document next to the currently displayed document from among the retrieved documents. Document data display section 5
3, when "next document" is specified, requests the search unit 311 to input the next document, and inputs the PMID of the next document.
is received, and the document data in the page memory 14 is displayed in the document display window DW using this PMID.

When the search unit 311 receives the input request for the next document, similarly to the document display process, the search unit 311 obtains the start address and data length on the optical disk 19 of the document data corresponding to the next document, and inputs these parameters into the document data person. It is passed to the output section 55. The document data input/output unit 55 reads document data from the optical disk 19 and stores it in the page memory 14 managed by the document data management unit 54, and also reads the PMI attached to the document data stored in the page memory 14.
D is obtained and this PMID is passed to the document data display section 53.

"Previous document" displays a document previous to the currently displayed document from among the documents retrieved from the optical disc 19. The flow of control is similar to "next document".

"Mask settings" is used to set how to mask document data when displaying it in the document display window DW, and when this is specified, the mask settings window MW shown in Figure 6 is displayed. be done.

Displayed here is a table for setting up to seven mask areas, mask types, and mask types for areas other than these. For each mask area, the coordinates of the upper left and lower right of the rectangle are specified in mm units, and the following six mask types can be set for this mask area.

Binary: A rectangular area specified by a mask area within document data is processed as binary document data. For characters and shapes,
Set this mask type.

Photo: Process the mask area as photo document data. Since the portion manually created as a photograph by the scanner 20 is usually dithered, if this portion is enlarged or reduced and processed as is in the display memory 15, moiré and the like will occur. Therefore, if the mask type is set to photo, dither processing is performed again.

Black and white inversion: Display the mask area in black and white inversion.

Used for highlighting etc.

Blur: Displays a masked area by replacing black pixels with own pixels in a certain periodic pattern.

White: All mask areas are replaced with white pixels and displayed. Set for areas you do not want to display or areas that are unnecessary.

Black: All mask areas are replaced with black pixels and displayed. Set for areas you do not want to display or areas that are unnecessary.

After setting these mask areas and mask types, when an instruction is given to end the settings, the mask setting window MW disappears and the document data is redisplayed with the newly set mask.

The mask setting values set in the mask setting window MW are saved in the document data display section 53, and this masking process is performed in the same way when displaying a new document in the next or previous document. be exposed.

FIG. 7 shows an example of document data DD read from the optical disc 19 and stored in the page memory 14, and FIG. 8 shows an example of document data DD displayed on the document display window DW of the CRT display 24. It indicates the condition. In the initial mask setting window MW, as shown in FIG. 6, mask areas 1 to 7 and mask types are not set, and binary values are set as mask types for areas other than the above.

When the document data shown in FIG. 7 is displayed in the document display window DW as shown in FIG. 8 with the initial mask setting values, 2
Since the data is transferred from the page memory 14 to the CRT display 24 as value document data, text portions are clearly displayed, but photographic portions are displayed with moiré and lack of gradation. Furthermore, when specifying the next document and turning over the pages of similar document data (separately turning over the pages), many text portions are displayed, which hinders the search for the desired document.

Therefore, by instructing the mask setting in the menu at the bottom of the document display window DW, setting the inside of the mask setting window MW as shown in FIG. 9, and instructing the end of the setting, the first
The document data is displayed as shown in Figure 0. FIG. 10 illustrates how masks are set, and the first mask area is NO;... in the document data.
, set the mask type to binary here, set the second mask area to name;..., set the mask type to black and white inversion for highlighting, and set the mask type to black and white inversion for the third mask area. is set in the face photo area PT, the mask type is set to photo, and the mask type for areas other than the above is set to white.

As mentioned above, by setting the mask, the face photo section PT
is displayed without moiré, preserving gradation, and NO;
Only ... and the name ... are displayed, and all unnecessary parts are displayed in white, so the document data is displayed in an easy-to-read format for the operator by the next document, etc., so it is easy to select the desired document. It becomes easier to search.

Before explaining the document display process, the transfer of document data in this embodiment will be explained.

First, the document to be handled is a black and white binary image, and the two-dimensional document data is decomposed into one-dimensional pixel columns for each row from the upper left to the lower right of the document, similar to the scanning direction of the CRT display 24, and each pixel is stored in a page memory. 14 or display memory 15
A black pixel is represented by a pixel value of "1" (bit on), and a white pixel is represented by a pixel value of "0" (bit off).

Document data is stored in the page memory 14 and display memory 15, and each document data is managed by a one-dimensional memory start address in the page memory 14 or display memory 15 and length in pixels in the horizontal and vertical directions. . Furthermore, a plurality of document data can be stored simultaneously in the page memory 14.

The document data in the page memory 14 is transferred to the display memory 15 and displayed on the CRT display 24.

The document data transfer process is carried out by the CPU 12 using the enlargement/reduction circuit 34.
This is done by setting the document data parameters of the transfer source and destination, the ternary operation code, etc., and instructing the enlargement/reduction circuit 34 to start document data transfer processing. Enlargement/reduction circuit 34
reads the transfer source document data from the page memory 14 or display memory 15, and writes the enlarged/reduced data onto the transfer destination document data in the page memory 14 or display memory 15.

The enlargement/reduction circuit 34 includes a sequence control section 34a for transferring document data, and two two-dimensional address generation sections 34b, 3 for accessing document data at a transfer source and a transfer destination.
4b, a ternary operation unit 34c, a simple binary processing unit 34d, a multi-value redither processing unit 34e, and an output for switching the output data to the output from the simple binary processing unit 34d or the multi-value redither processing unit 34e. It is composed of a switching section 34f.

The two-dimensional address generators 34b, 34b generate two addresses within a designated rectangle of document data stored in the one-dimensional memory configuration.
It generates dimensional addresses.

The ternary calculation unit 34c calculates pixel values to be written to the transfer destination from the pixel values of the transfer source, transfer destination, and pattern when transferring document data from the transfer source to the transfer destination.
Operation codes such as logical sum, logical product, negation, and exclusive logical product of two values are specified.

By specifying this operation code, you can write the source document data as is into the destination document data memory, invert black and white, or replace black pixels with white pixels in a certain periodic pattern to blur the data. It becomes possible to do this.

The simple binary processing unit 34d scales the document data read from the transfer source by simple interpolation processing. When enlarging, the same pixel value as the transfer source is written to a plurality of pixels on the transfer destination corresponding to the transfer source, and when reducing, a pixel value obtained by ORing the plurality of pixels on the transfer source corresponding to the transfer destination is written. This simple binary processing is suitable for enlarging/reducing document data consisting of line drawings such as characters.

The multi-value re-dither processing unit 34e converts the document data read from the transfer source into multi-value data, scales it up and down, and then dithers it again and writes it to the transfer destination. This multi-value re-dithering process is suitable for enlarging/reducing document data such as photographs whose gradations are expressed by dithering.

The output switching unit 34f switches whether the pixel values to be written to the transfer destination are from the simple binary processing unit 34d or the multi-value re-dither processing unit 34e, and outputs a plurality of specified pixel values on the document data of the transfer source. The pixel values corresponding to the inside of the rectangular area are written from the multilevel re-dither processing section 34e, and the pixel values from the simple binary processing section 34d corresponding to outside the rectangular area are written to the transfer destination.

When performing document data transfer processing, the control program within the CPUI 2 gives instructions to the enlargement/reduction circuit 34 in the following procedure.

(1) The enlargement/reduction circuit 34 calculates the start address and length in the horizontal and vertical directions of the document data of the transfer source and the start address and length in the horizontal and vertical directions of the rectangular area to be read from this document data.
is set in the two-dimensional address generation units 34b, 34b for transfer.

(2) The enlargement/reduction circuit 34 calculates the start address and length in the horizontal and vertical directions of the document data to be transferred, and the start address and length in the horizontal and vertical directions of the rectangular area to be written into this document data.
is set in the two-dimensional address generation units 34b, 34b for transfer.

(3) Set the ternary operation code in the ternary operation section 34C in the scaling circuit 34.

(4) Set the photo area on the transfer source document data to the output switching unit 34f in the enlargement/reduction circuit 34.

(5) Instruct the enlargement/reduction circuit 34 to start the document data transfer process.

(6) Wait until the enlargement/reduction circuit 34 finishes.

Through the above steps, the specified rectangular area of the transfer source document data is enlarged or reduced so that it fits within the specified rectangular area of the transfer destination document data, and the pixel value of the transfer destination is determined using the specified ternary operation code. , the area within the designated photographic area is subjected to multi-value redither processing, and the area outside the area is subjected to simple binary processing.

FIGS. 12(a) to 12(d) show the document data display section 53.
This is a flowchart. Also, Figure 13 (
a) to (e) show internal management tables of the document data display section 53.

The document data display section 53 first sets the mask setting value in the internal management table to the initial value (STI), and displays the document display window DW on the CRT display 24 (STI).
T2). Thereafter, it waits for a command supplied from the search unit 311 or an instruction command from the operator corresponding to the menu at the bottom of the character display window DW (ST3).

Commands from the search unit 311 include a document display command and an end command. When a document display command is received, the document display processing shown in FIGS. 12(b) to 12(d) is performed (ST
4 to ST6), when receiving the end command, erases the document display window DW and ends the process (ST4, 5, ST6).
T7, 8).

Here, the document display processing shown in FIGS. 12(b) to 12(d) will be described.

First, the search unit 311 uses the identification number of the document data stored in the page memory 14, which is passed as a parameter of the document display command, to the PMID in the internal management table.
I (ST21), requests a document data area of the same size as this document data from the document data management section 54, and sets the identification number of the document data in the secured page memory 14 to PMID2 in the internal management table. Do (S
T22). The document data represented by PMIDI and PMID2 is managed by the start address and length in the horizontal and vertical directions in the one-dimensional memory.

Here, on the document data represented by the secured PMID2, mask processing other than the photo area of the mask setting value in the internal management table is performed at the same magnification, and then the document data represented by this PMID2 is Enlarging/reducing processing including multilevel dithering processing is performed on the area, and the result is transferred to the document display area on the display memory 15.

Regarding photo areas expressed by dithering, there is no problem when transferring at the same size, but when enlarging or reducing transfer using simple binary processing, image quality deterioration such as moiré occurs, so it is necessary to keep the same size. When transferring by mask processing on the document data represented by PMID2, the photo area is ignored and transferred at the same size, and display memory 1 of different size is transferred.
When enlarging or reducing the transfer to the document display area above 5, processing is performed in consideration of this photo area.

First, the document data represented by PMID2 is initialized according to the mask type of "other areas" in the internal management table.

If the mask type is "binary" (ST 2' 3
), the entire area of the document data expressed by PMIDI is the transfer source, the entire area of the document data expressed by PMID2 is the transfer destination, and the pixel value of the transfer source is written as is to the transfer destination as a ternary operation code. The user specifies the code to be transferred and instructs the enlargement/reduction circuit 34 to start the transfer without setting the photo area. Since the sizes of the transfer source and transfer destination are the same, they are transferred at the same size (ST24).

If the mask type is "Blur" (ST25), PMI
The entire area of document data represented by DI is the transfer source, and P
The entire area of the document data represented by MID2 is set as the transfer destination, and a code indicating the logical product of the transfer source and a pattern that includes the own pixel among black pixels at a constant period is specified as a ternary operation code. The enlargement/reduction circuit 34 is instructed to start transfer without setting an area. Since the size of the transfer source and the transfer destination are the same, they are transferred at the same size. Through this process, the blurred data of the transfer source document data is transferred (ST26).

If the mask type is "white" (ST27), white pixel values are written in the entire area of the document data represented by PMID2 (S
T28).

If the mask type is "black" (ST27), black pixel values are written in the entire area of the document data represented by PMID2 (S
T29).

Next, for the seven mask areas in the internal management table,
Perform mask processing according to the mask type (ST3
0 to ST42).

If the mask type is "binary" or "photo" (ST3
2) Set the mask area in the document data expressed by PMIDI as the transfer source, set the mask area of the document data expressed by PMID2 as the transfer destination, and use the pixel value of the transfer source as it is as a ternary operation code. A code to be written to the transfer destination is specified, and the enlargement/reduction circuit 34 is instructed to start the transfer process without setting the photo area. Since the size of the transfer source and the transfer destination are the same, they are transferred at the same size. When enlarging or reducing the "photo" area, image quality deterioration occurs, and this process is performed during subsequent enlargement or reduction transfer to the display memory 15 (ST33).

If the mask type is "black and white inversion" (ST34), the mask area in the document data represented by PMIDI is set as the transfer source, the mask area in the document data represented by PMID2 is set as the transfer destination, and 3 A code to be written to the transfer destination is specified as a term operation code with a value obtained by negating the pixel value of the transfer source, and the enlarging/reducing circuit 34 is instructed to start the transfer process without setting a photographic area. Since the size of the transfer source and the transfer destination are the same, they are transferred at the same size. When enlarging or reducing the "photo" area, image quality deterioration occurs, and this process is performed during subsequent enlargement or reduction transfer to the display memory 15 (ST35).

If the mask type is "Bakasi" (ST36), PMI
Set the mask area in the document data represented by DI as the transfer source, set the mask area of the document data represented by PMID2 as the transfer destination, and set the transfer source as a ternary operation code,
A code indicating a logical product with a pattern including white pixels among black pixels at a constant period is specified, and the enlarging/reducing circuit 34 is instructed to start the transfer process without setting a photographic area (ST37).

If the mask type is "white" (ST38), a white pixel value is written in the mask area of the document data represented by PMID2 (ST39).

If the mask type is "black" (ST38), PMID2
A black pixel value is written in the mask area of the document data represented by (S T4 0).

These processes are performed on seven mask areas.

Next, the document data represented by PMID2, that is, the created document data, is enlarged or reduced and transferred to the document display area on the display memory 15 (ST43 to ST52).

First, the entire area of the document data represented by PMID2 is set as the transfer source (ST43), the document display area on the display memory 15 is set as the transfer destination (ST44), and the pixel value of the transfer source is transferred as is as a ternary operation code. First, specify the write code (ST45), and set it as a mask area whose mask type in the internal management table is set to "Photo" (ST45).
T46 to ST50), the enlargement/reduction circuit 34 is instructed to start the transfer process. Wait until the enlargement/reduction circuit 34 finishes (S
T51), after completion, requests the document data management unit 54 to release the document data represented by PMID2 (ST5
2).

As mentioned above, a predetermined area of document data displayed on a CRT display is specified, and the image processing conditions for each specified predetermined area are binary, photo, black and white inversion,
Blur, white, and black are set, document data displayed on the CRT display is converted according to the image processing conditions, and the converted document data is displayed on the CRT display. As a result, when displaying a plurality of fixed-form documents having the same format at high speed, the target document can be efficiently searched for without disturbing the gaze point and making it easy to see.

[Effects of the Invention] As detailed above, according to the present invention, when displaying a plurality of fixed-form documents having the same format at high speed, the point of interest is not disturbed and is made easy to see, so that the target can be efficiently achieved. An image display device that can search for documents can be provided.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a block diagram schematically showing the overall configuration, Fig. 2 is a diagram for explaining the document management system, and Fig. 3 is a diagram of the software. Figures 4 to 11 are diagrams for explaining the configuration, Figures 4 to 11 are diagrams for explaining the display operation of document data, Figure 12 is a flowchart showing the operation of the document data display section, and Figure 13 is an internal management table. FIG. 12... CPU, 13 main memory, 14... page memory, 19... optical disk, 20... scanner, 22... optical disk device, 23... keyboard,
24... CRT display, 27... Magnetic disk device, 27a... Magnetic disk, 28... Magnetic disk device, 28a... Floppy disk, 29.
...Mouse, 51...Falling processing section, 52...
Database section, 53... Document data display section, 54.
. . . Document data management unit, 55 . . . Document data input/output unit, 56 . . . Code/image conversion unit, 57 . Applicant's representative Patent attorney Takehiko Suzue

Claims (2)

[Claims] (1) A display means for displaying image information, a specifying means for specifying a predetermined area of the image information to be displayed on the display means, and a setting means for setting image processing conditions for each predetermined area specified by the specifying means. a conversion means for converting the image information displayed on the display means according to the image processing conditions set by the setting means; and a display control means for displaying the image information converted by the conversion means on the display means; An image display device comprising: (2) A display means for displaying image information, a specifying means for specifying a predetermined area of the image information to be displayed on the display means, and a white-painting process as an image processing condition for each predetermined area specified by the specifying means. , a setting means for setting black painting processing, binary processing, dither processing, black and white inversion processing, or blurring processing; and white painting processing or black painting processing set by the above setting means for image information displayed on the display means. , a conversion means for converting according to binary processing, dither processing, black and white inversion processing, or blurring processing, and display control means for displaying image information converted by the conversion means on the display means. image display device.