JP2913664B2 - Image information division processing apparatus and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention compresses and stores image information read by an image input device, such as an optical disk filing device, and compresses and stores the image information. The present invention relates to an image information division processing device and an image information division processing method for expanding image information and outputting the image information to an image display device.

[Conventional technology]

A method of recording image data in a conventional image information storage processing device, as shown in the flowchart of FIG.
The entire image data is collectively recorded on the image information recording medium.

That is, the image data is fetched by the image input device (step 701) and sequentially transferred to the image memory (page buffer) (step 702). When the transfer is completed (Step 7
03), the data in the image memory (page buffer) is compressed by the image compression / decompression controller, and the compressed data is temporarily loaded into the code memory (RAM) (steps 704 to 704).
Step 705). Thereafter, a method of recording on an image information storage medium (steps 706 to 707) is adopted (for example, Electronic Information and Communication Handbook Vol. 25, No. 6).
Sections pp.1882, 1883).

Also, the image recorded on the image information recording medium is
When displaying the image data on a CRT display or the like, most of the image data is read and displayed in a lump.

[Problems to be solved by the invention]

In the image data recording method in the conventional image information storage processing device, when inputting the image data, especially when the image data amount is large, it takes time to compress or record the data, and during that time, the image input device cannot be used. However, a waiting time for the image input operation occurs, which is the biggest bottleneck when recording image information continuously.

As described above, FIG. 7 is a flowchart showing the operation of the conventional image information recording method, and shows that the process does not proceed to the next process until each process is completed.

In addition, when a recorded image is output and displayed, it is often possible to determine whether or not the user is looking for an image by looking at a part of the image. However, image data recorded by the conventional image information recording method usually has a large capacity and is compressed, so that the entire data is read, decompressed, transferred to a display memory, and displayed. Took a considerable amount of time, and was a major obstacle to reading images one after another and searching for the desired image.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art, shorten the image data compression time, speed up recording on an image information storage medium, reduce the waiting time of an image input device, and continuously record image information. It is an object of the present invention to provide an image information division processing apparatus and method capable of improving efficiency at the time of operation, quickly detecting image information required by a user, and performing more efficient search processing.

[Means for solving the problem]

To achieve the above object, (A) the image information division processing device of the present invention divides image information read by an image input device (image scanner 11) into a plurality of blocks and sequentially stores the divided blocks in a page memory (image memory 9). After transferring and storing, sequentially reading and compressing the image information from the image memory 9 in block units, transferring and storing the image information in a code memory (ROM2), the image divided from the code memory (RAM2) into the plurality of blocks is stored. The information is sequentially read out in units of the blocks and stored in the image information storage medium (optical disk 4), and the image information divided into a plurality of blocks and stored in the image information storage medium (optical disk 4) is stored in the block. The data is sequentially read and expanded in units, stored in the video memory (12), and the image information stored in the video memory (12) is collectively read and An image information dividing processing apparatus for outputting to the display means (CRT 13), is characterized by having means for passing to the respective processes are sequentially performed in units of blocks to check the processing order of the blocks so as not to generate. (B) The image information division processing method according to the present invention includes a first step of dividing image information read by an image input device (image scanner 11) into a plurality of blocks and sequentially transferring and storing the divided blocks in an image memory 9. A second step of sequentially reading and compressing the image information from the image memory 9 in block units, transferring the image information to a code memory (RAM2), and storing the image information in the code memory (RAM2). A third step of sequentially reading out the image data in block units and storing the image information in the image information storage medium (optical disk 4); and storing the image information divided into a plurality of blocks and stored in the image information storage medium (optical disk 4). A fourth step of sequentially reading and decompressing the image data in block units and storing the image data in the video memory (12); and the image information stored in the video memory (12). A fifth step of collectively reading out and outputting to the image display means (CRT13), wherein the processing of the first step and the second step is performed for different blocks. It is characterized in that the processing is performed in parallel, and the processing of the second step and the third step is performed in parallel on different blocks.
Further, (C) the image information division processing method of the present invention automatically converts the image information from an image information storage medium such as an optical disk in which the image information is divided into a plurality of blocks and stored in a compressed state until there is a termination instruction. A first step of reading out, decompressing, and sequentially displaying the blocks in units of blocks, and a second step of terminating the reading of the image information from the image information storage medium when the termination instruction is issued. When the specific image information in the selected image information is selected, the entire image of the selected image information is read out from the image information storage medium and displayed and output based on the management information for specifying the storage location of the selected image information. It is characterized by having a third step.

[Action]

In the present invention, the image data is divided into blocks by the image memory, so that the image data is transferred in parallel from the image input device to the image memory and the image data is compressed by the image compression / decompression controller device. By performing parallel processing of storing the image data in the image information storage device by dividing the memory into blocks and compressing the image data, divisional recording of the image data in the image information storage device is performed, and the image data compression time is reduced. Shortening and speeding up recording on the image information storage medium are achieved.

Next, since the images are divided and recorded in this way, when displaying images continuously, a part of each image data of a plurality of pages divided and recorded in one block is transferred to the image memory via the video memory. Since the divided images are displayed on the display device, the contents of many pages can be confirmed on one screen. As a result, the target image data can be easily and quickly detected, and only the necessary image data is read from the optical disk, expanded, and displayed, so that the unnecessary image data is read. In addition, waste of extension processing can be eliminated.

Further, at this time, since the compressed data to be displayed is written in a clumped area, the seek time of the head of the optical disk drive is shortened, and the display can be realized at a higher speed, so that the processing efficiency is improved. Enable.

Also, after the detection of the target image data, the entire image of the target image data is sequentially fetched from the image information storage device into the video memory from the image data divided and recorded in each block, and collectively from the video memory. It is obtained by displaying on an image display device.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a layout diagram of image information division recording showing one embodiment of the present invention, and FIG. 6 is an overall block diagram of an optical disk file system showing one embodiment of the present invention.

In this embodiment, an image is recorded by dividing image data and an optical disk into n pieces as shown in FIG.
Next, the storage operation is performed by the optical disk file device having the system configuration shown in FIG.

In the optical disk file device system shown in FIG. 6, the CPU 1 receives an interrupt from a direct memory access controller (hereinafter abbreviated as DMAC) 8,
It is possible to control an interrupt from the decompression controller 7 and an interrupt from the optical disk (image information storage unit) 4 via the optical disk interface 3 and also manage the blocks being processed by these devices. Shall be. The RAM (code memory) 2 is a code memory for compressed image data. The DMAC 8 is capable of image compression in designated block units and transfer to the RAM (code memory) 2.

The user can operate the optical disk file device via the keyboard 5 and the keyboard interface 6, and the image data read by the image scanner 11 and the scanner interface 10 is read into the image memory 9 and compressed by the image compression / decompression controller 7. The data is transferred to a RAM (code memory) 2 and temporarily recorded, and is recorded on an optical disk (image information storage unit) 4 via an optical disk interface 3.

When displaying image data recorded on the optical disk (image information storage unit) 4, the image data is expanded by the image compression / expansion controller 7 and is displayed via the video memory 12 and the CRT 13.

FIG. 2 is a flowchart of an image information recording process showing one embodiment of the present invention. The operation of dividing the image data and the optical disk into n pieces and processing them will be described below.

First, at the time of the recording operation, as shown in the flowchart of FIG. 2A, one image data is read from the image scanner 11 in FIG. And stored in the image memory (page buffer) 9 (step 20).
2) The divided image data (1) is compressed by the image compression / decompression controller 7 (step 203), transferred to the RAM (code memory) 2, and transferred to the RAM (code memory) 2. To the optical disk interface 3
Is recorded in the area (1) of the divided image compressed data of the optical disk 4 via the step (step 204). The written start sector and the number of used sectors of the written optical disk 4 are stored in the memory as data of the divided image compressed data (step 205). This operation is performed n times (step 206), and then the image data management information for n times is written to the image-specific position in the image data management information area of the optical disk 4 (step 207), and the recording of one image is completed. . In this method, one piece of image data is recorded on the optical disc 4 separately.

The image-specific position in the image data management information area is, as shown in FIG. 2B, an image number assigned to each image, and the image number and the image data of the optical disk. The management information area sectors correspond one-to-one.

FIG. 2C is a flowchart showing the operation of preventing the overtaking of the processing when reading the image data. In this embodiment, when processing is requested from the CPU 1 to the peripheral position, the peripheral device starts the processing operation. However, it is assumed that it responds immediately after starting and returns to the control of CPU1. Therefore, the requesting side interrupts to notify that the processing has been completed, and the CPU 1 must detect and control it. The interrupt check routine for that is the interrupt check routines (1) to (3) in FIG. 2 (c). Interrupt check routine (1)
Step 212 is performed until the transfer of the first block is completed. The interrupt check routine (2) 215 to 218 is a process before the first block is written to the image information storage unit. After the first block is written, the process 221
To 231 and the interrupt check routine (3) 222
In steps 229 to 229, the CPU control according to the present invention is performed.

First, the command from CPU1 is sent to the scanner interface.
As soon as the scanner received via 10 starts operating, it responds to CPU 1 (step 210). CPU that received the response
1 issues a command to the DMAC 8, and when the DMAC 8 starts transferring the uncompressed data (raw data) of the image input from the image scanner 11 to the image memory 9, the DMAC 8 immediately responds to the CPU 1 (step 1). 211). In the interrupt check routine (1), as long as the number of transfer end blocks is 0, it is not possible to proceed to the next processing (compression / transfer), so that a standby state is set (step 212). As soon as the transfer of the first block is completed, a command is issued to the second block and the same processing as in step 211 is performed (step 2).
13). Upon receiving the response in step 213, the CPU 1
When a command is issued to the decompression controller 7, the image compression / decompression controller 7 compresses the data of the first block in the image memory 9 and immediately starts transferring the data to the RAM (code memory) 2. Respond to (step
214). The same check is performed for step 213 as in step 212, but not only in this processing, but also in a wait state in combination with step 218 (step 215). The number of transfer blocks is checked, and if one block (n blocks) has not been completed, a transfer of the second block and thereafter is requested (steps 216 and 217). Image compression for step 214
Until the end interrupt from the decompression controller 7 is checked and the compression / transfer of the first block is completed, the process cannot proceed to the next process (writing to the optical disk / image information storage unit 4). Therefore, as in step 212, a wait state is set, but if the transfer has not been completed for all blocks,
The process is performed in advance (interrupt check routine (2)) (step 218). In order to prevent the compression / transfer process from overtaking the transfer process, the block number currently being processed is checked (step 219). When the compression / transfer of the first block is completed, a command is issued to the second block and the same processing as in step 214 is performed (step 220). The CPU 1 receiving the response of step 220 issues a write command to the optical disk (image information storage unit) 4, thereby starting to write one block of compressed data on the RAM 2 and responds (step 221). Step 2
The same processing as that of step 15 to step 217 is performed (step 222 to step 224). Next, the same processing as steps 215 to 217 is performed on the compression / transfer processing (steps 225 to 228). The end interrupt from the optical disk (image information storage unit) 4 for step 211 is checked, and the process waits (steps 222 to 227) while preceding the preceding two processes (transfer, compression and transfer). Step 230
In, as in step 216, a check is made on the number of write blocks. Then, in order to prevent the writing process from overtaking the transfer process, the block number currently being processed is checked (step 231).

As described above, the processing for the next block is assigned in the order in which the processing has been completed by the three interrupt check routines, and if the previous processing has not been completed, the currently processed processing is performed so as not to overtake the processing. Blocks are managed by the CPU. N in the figure indicates the number of divided blocks as PB
Represents an image memory (page buffer) 9.

FIG. 3 is a flowchart of an image information display process showing one embodiment of the present invention, and FIG. 4 is a CRT shown in FIG.
It is an upper display layout diagram.

Next, a method of continuously reading out images (turning over pages, documents, etc.) will be described.

As shown in the flow chart of FIG. 3, information on which part of the image data is to be read is obtained in advance through the keyboard 5 and the keyboard interface 6 (step 301). For example, if the setting is made so as to read the image data area (2) in FIG. 1, the image data management information corresponding to the image data area (2) is read from the optical disk memory (step 302), and actually The use start sector and the number of use sectors of the written divided image compressed data are obtained, and then, based on the obtained information,
Partial data is read from the divided image compression data area (step 303), and the data is decompressed by the image compression / decompression controller 7 and displayed at the position of display (1) shown in FIG. 4 (step 304). The second image is read out in the same manner as the first image, and as shown in FIG. 4, display (2), display (3),... Are sequentially displayed (step 305). . At this time, if the end is selected, the reading of the image is ended (step 306).

FIG. 5 is a flowchart when the entire image is displayed.

For example, when the display (2) in FIG. 4 is selected, the image data management information of the image displayed in the display (2) is displayed as shown in the flowchart of FIG. Read out (step 501). An image corresponding to the image is read from the divided image compressed data 1 (step 502), decompressed, and transferred to the display memory (step 503). This work is called divided image compressed data 2, 3, ...
Repeat n (Step 504), expand the entire image in the display video memory 12 (Step 505), and display the entire image on the CRT 13 (Step 506).

As described above, according to the present embodiment, in the image information recording processing apparatus for an optical disk file or the like, first, when recording the image information, the parallel processing of transferring and compressing the image data to the page buffer, the compression of the image data, Since the parallel processing of recording the compressed data in the image information storage unit becomes possible, the waiting time of the input device at the time of compressing the image data is reduced, and the processing speed is increased when recording the image information continuously. I can do it. In addition, since a block being processed can also be managed, overtaking of preprocessing is prevented.

Next, since the image recorded by this method is written as a plurality of divided image data in the collective area of the optical disc, data which is not displayed at the time of partial display of image information is handled. Can be wasted.

In the case of continuous display, since the compressed data to be displayed is written in a clumped area, the seek time of the head of the optical disk drive and the like are shortened, and higher-speed display can be realized.

Furthermore, by selecting a partially displayed image, the entire image can be displayed, and the image can be selectively displayed by a series of these operations.

〔The invention's effect〕

According to the present invention, at the time of an image information recording operation,
The image data compression time can be shortened, and the speed of recording on the image information storage medium can be reduced, the waiting time of the image input device can be reduced, and the efficiency of the image information continuous recording operation can be improved.

Furthermore, in the display operation of the image information, in particular, in the case of displaying continuously, a part (block) selected in advance of each page is divided into a plurality of parts so that the image information required by the user can be quickly displayed. Can be detected. In addition, since the compressed data to be displayed is written in a clumped area, the seek time of the head of the optical disk drive and the like are shortened, and higher-speed display can be realized.

As described above, the recording, display, and retrieval processing speed of the image information can be increased, so that the function of the image information storage processing device can be improved.

[Brief description of the drawings]

1 shows an embodiment of the present invention, FIG. 1 is a layout diagram showing an image recording method in an image information division processing method according to the present invention, and FIG. 2 is an image in an image information division processing method according to the present invention. FIG. 3 is a flowchart showing a data recording processing procedure, FIG. 3 is a flowchart showing an image data display processing procedure in an image information division processing method according to the present invention, and FIG. 4 is a CR showing a display processing procedure result in FIG.
FIG. 5 is a flowchart showing a display processing procedure of an entire image of image data in the image information division processing method according to the present invention. FIG. 6 is a flowchart showing the image information division processing method according to the present invention. FIG. 7 is a block diagram showing a system configuration of the provided image information division processing device. FIG. 7 is a flowchart showing a recording processing procedure of the image information recording processing device provided with the conventional image information recording method. 1: CPU, 2: RAM (code memory), 3: Optical disk interface, 4: Optical disk (image information storage unit), 5: Keyboard,
6: Keyboard interface, 7: Image compression / decompression controller, 8: Direct memory access controller (DMA
C), 9: image memory, 10: scanner interface, 11: image scanner, 12: video memory, 13: CRT.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-37468 (JP, A) JP-A-2-148362 (JP, A) JP-A-1-273172 (JP, A) JP-A-57- 193867 (JP, A) JP-A-63-184170 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G09G 5/00-5/40 G06F 17/30-17/40

Claims (5)

(57) [Claims] An image information read by an image input device is divided into a plurality of blocks, sequentially transferred and stored in an image memory, and the image information is sequentially read from the image memory in block units and compressed and transferred to a code memory. After storing the image information, the image information divided into the plurality of blocks is sequentially read from the code memory in block units and stored in the image information storage medium, and further divided into a plurality of blocks in the image information storage medium and compressed. An image information division processing device for sequentially reading and expanding image information stored and stored in the video memory, storing the image information in the video memory, and reading out the image information stored in the video memory collectively and outputting the image information to image display means. To check the processing order of the blocks so that each of the above processes performed in block units will not be overtaken. An image information division processing device having a step. 2. A first step of dividing image information read by an image input device into a plurality of blocks and sequentially transferring and storing the divided blocks in an image memory, and sequentially reading and compressing the image information from the image memory in block units. A second step of transferring and storing the image information divided into the plurality of blocks from the code memory in block units and storing the image information in the image information storage medium in the image information storage medium; A fourth step of sequentially reading and expanding image information divided into a plurality of blocks and stored in the information storage medium in units of the blocks and storing the expanded and expanded image information in the video memory; Fifth to read all at once and output to image display means
The image information division processing method comprising the steps of: performing the processing of the first step and the processing of the second step in parallel on different blocks from each other;
And a process of the third step is performed in parallel on blocks different from each other. 3. An image information storage medium, such as an optical disk, in which image information is divided into a plurality of blocks and compressed and stored, and the image information is automatically read and expanded in block units until a termination instruction is given. First to display and output sequentially
And a second step of terminating the reading of the image information from the image information storage medium when the termination instruction is issued. When the specific image information displayed and output is selected, the selected A third step of reading out the entire image of the selected image information from the image information storage medium based on management information for specifying the storage location of the selected image information, and displaying and outputting the image. Method. 4. The method according to claim 1, wherein the step of storing the image information in the image information storage medium includes dividing the image information read by the image input device into a plurality of blocks, sequentially transferring the blocks to an image memory, and storing the image information in the image memory. Sequentially reading and compressing the information in units of the blocks, transferring and storing the information in a code memory, and sequentially reading out the image information divided into the plurality of blocks from the code memory in units of the blocks and storing the image information in the image information storage medium 4. The image information division processing method according to claim 3, wherein the method is performed by steps. 5. When reading image information from the image information storage medium, first, management information for specifying a storage location of image information including at least two of a use start sector and a use sector number on the storage medium is obtained. 4. The image information division processing method according to claim 3, wherein the image information is read based on the acquired management information.