JPH0239277A - Picture memory - Google Patents

Abstract

PURPOSE:To segment and store only the necessary parts of pictures and to use a memory with high efficiency by preparing an input picture information memory, an instruction means for size of the picture information, a specific information holding means, and a memory control means. CONSTITUTION:A connector 4550 is connected to a color reader and the three primary color information is supplied to a selector. A VCLK, a signal, the inverse of EN and an ITOP signal are applied directly to a controller 4210. The instructed area information is inputted to a reader controller 4270 before an original read and sent to a CPU 4360 for an arithmetic process. While the three primary color information is inputted to a selector 4250. The signals are synchronized with each other and inputted to each FIFO memory 4050. In such a way, the controller 4210 controls a counter 4080 and a selector 4070 and stores the picture information set in a range specified by the specific information into a memory 4060. Then the controller 4210 stores other picture information in the produced unrecorded areas. Thus the memory is used with high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image storage device that stores input image information.

[Prior Art] Recently, input color image information is first stored in a storage means such as a semiconductor memory, and then this stored image information is read out, subjected to necessary image processing, and then stored in the storage means again. Digital televisions, digital VTRs, and the like have appeared as image processing devices equipped with storage devices that can output data as needed.

However, these devices simply store the video signal in a memory, and the size of the image source of the video signal is also uniquely determined, so their functions are limited.

[Problem to be solved by the invention] In recent years, it is not only these video signals that are displayed or output to image processing devices such as television receivers, but also devices that display images from color scanners and the like have become necessary. ing.

However, images read from color scanners and the like vary in size.

Therefore, there may be cases where the capacity of the input read image does not match the storage capacity of the storage device that stores the image information.

However, in the past, even in such cases, the prescribed 1
It merely stores and displays image information for one screen (one input).

For this reason, when the capacity of the input image is large, the image information that is truly needed may protrude and cannot be stored. In addition, there have been cases where image information that does not need to be stored is stored in the storage device, and even if necessary image information arrives, it cannot be stored.

Additionally, it is conceivable to store trimming information for trimming together with image information in memory as in the past, but even in such a case, all image information is captured in memory, making it difficult to use memory efficiently. The problem was that it couldn't be done.

[Means for Solving the Problems] The present invention has been made for the purpose of solving the above-mentioned problems, and includes the following configuration as a means for solving the above-mentioned problems.

That is, a storage means for storing input image information, an instruction means for instructing the size of the image information in the input image information to be stored in the storage means, and a storage means for storing human image information in accordance with the instruction of the instruction means. The image forming apparatus includes a holding means for holding specific information for specifying a storage range of the image data, and a storage control means for controlling the storage of input image information in the storage means in accordance with the specific information held in the holding means.

[Operation] In the above configuration, only the necessary portions of the input image information can be cut out and stored, and a very efficient storage means can be used.

4 people 1; soyo 2 [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[Embodiment 1] FIG. 1 is a system configuration diagram showing an example of a schematic internal configuration of a color image forming system according to an embodiment of the present invention.
As shown in FIG. 1, the system of this embodiment includes a digital color image reading device (hereinafter referred to as "color reader") 1 that reads digital color images at the top, and a digital color image printing device that prints out digital color images at the bottom. (hereinafter referred to as a "color printer") 2, and an image storage device 3.

The color reader l of this embodiment includes a color separation means, which will be described later,
This device uses a photoelectric conversion element composed of a COD or the like to read color image information of a read document for each color and converts it into an electrical digital image signal.

The color printer 2 is an electrophotographic laser beam color printer that limits color images by color according to the digital image signal to be output, and records the images by transferring them multiple times in the form of digital dots onto recording paper. .

Furthermore, the image storage device 3 is a device that stores digital images read from the color reader 1.

The details of each part will be explained below.

Description of color reader 1> First, the configuration of the color reader I will be explained.

In the color reader 1 shown in FIG. 1, 999 is an original, 4 is a platen glass on which the original is placed, and 5 is a halogen exposure lamp 10 that collects the reflected light image from the original that has been exposed and scanned. This is a rod array lens for inputting images to 6. A rod array lens 5, a full-color full-color sensor 6, a sensor output signal amplification circuit 7, and a halogen exposure lamp 10 are integrated into a document scanning unit 1.
1, and exposes and scans the original 999 in the direction of the arrow (A1). Image information to be read from the original document 999 is sequentially read line by line by exposing and scanning the original scanning unit 11. The read color separated image signal is amplified to a predetermined voltage by the sensor output signal amplification circuit 7, and then input to the video processing unit via the signal line 501, where the signal is processed. Note that the signal line 501 has a coaxial cable configuration to ensure faithful signal transmission. A signal 502 is a signal line that supplies drive pulses for the same-magnification full-color sensor 6, and all necessary drive pulses are generated within the video processing unit 12. Reference numeral 8.9 denotes a white plate and a black plate for correcting the white level and black level of the image signal, and by irradiating them with the halogen exposure lamp 10, a signal level of a predetermined density can be obtained, and the signal level of the video signal can be adjusted. Used for white level correction and black level correction.

Reference numeral 13 denotes a control unit that controls the entire color reader l of this embodiment, which includes a microcomputer, and performs display on the scanning panel 20, human key control, control of the video processing unit 12, etc. via a bus 508. Further, the position of the document scanning unit 11 is detected by position sensors S1 and S2 via signal lines 509 and 510.

Further, the stepping motor drive circuit 15 for pulse-driving the stepping motor 14 for moving the scanning body 11 is controlled by the signal line 503 by the exposure lamp driver 21 via the signal line 504.
It performs all controls of the color league section 1, such as 0FF control, light amount control, and control of the digitizer 16, internal keys, and display section via the signal line 505.

A color image signal read by the above-mentioned exposure scanning unit 11 during original exposure scanning is input to the video processing unit 12 via the sensor output signal amplification circuit 7 and the signal line 501.

Next, details of the above-mentioned document scanning unit 11 and video processing unit 12 will be explained using FIG.

The color image signal input to the video processing unit 12 is separated into three colors: G (green), B (blue), and R (red) by a sample hold circuit S/H 43. Each separated color image signal is subjected to analog processing in an analog color signal processing circuit 44 and then sent to an A/
The signal is converted into a digital color image signal.

In this embodiment, the color reading sensor 6 in the document scanning unit 11 is arranged in a staggered manner divided into five areas, as shown in FIG. This color reading sensor 6 and FIF
The O memory 46 is used to correct the reading position deviation between the 2nd and 4th channels being pre-scanned and the remaining 1st and 3.5° channels.

The signal of the positional deviation correction method from the FIFO memory 46 is
Input to the black correction circuit/white correction circuit and the above-mentioned white plate 8
, by using signals according to the reflected light from the black plate 9 to detect unevenness in the dark of the color reading sensor 6 and the halogen exposure lamp IO.
Non-uniformities in the amount of light, variations in sensor sensitivity, etc. are corrected.

Color image data proportional to the input light amount of the color reading sensor 6 is input to a video interface 101 and connected to the image storage device 3.

This video interface 101 has the functions shown in FIGS. 3 to 6. Namely, (1) the function of outputting the signal 559 from the point correction/white correction circuit to the image storage device 3 (FIG. 3), and (2) the function of inputting the image information from the image storage device 3 to the logarithmic conversion circuit 86. (Fig. 4), (3) function of inputting image information from the image storage device to the printer interface 56 (Fig. 5), (4) function of inputting the signal 559 from the point correction/white correction circuit to the logarithmic conversion circuit 86. It has four functions: sending function (Fig. 6). The selection of these four functions is switched by the CPU control line 508 as shown in FIGS. 3-6.

Description of Image Recording Unit 3> Next, the reading (capturing) control in the color reader 1 and the storage control of the read image information in the image storage device 3 in this embodiment will be described.

Settings for reading by the color reader 1 are performed by a digitizer described below. An external view of this digitizer 16 is shown in FIG.

In FIG. 7, 427 is an entry key for transferring image data from the color reader 1 to the image storage device 3. The coordinate detection plate 420 is used to specify an arbitrary area on the document to be read, or to set the reading magnification and the like. Point pen 421 is used to specify the coordinates.

To transfer image data of an arbitrary area on the document to the image storage device 3, after pressing the entry key 427 shown in FIG. 7, the point pen 421 is used to indicate the reading position.

This reading area information is sent to video processing unit 12 via communication line 505 in FIG. In the video processing unit 12, this signal is transmitted to the CPU control line 508.
is sent from the video interface lot to the image storage device 3.

FIG. 8 shows an example of the address of the area information (points A and B) indicated by the point pen 421 of the digitizer 16.

In addition to this area information, the video interface 101 outputs the V CL K signal, the ITOP 551, the EN signal 104 which is a signal from the area signal generation circuit 51, etc. together with the image data to the image storage device 3. A timing chart of these output signal lines is shown in FIG.

As shown in FIG. 9, by pressing the start button on the operation unit 20, the stepping motor 14 is driven, the document scanning unit 11 starts scanning, and when the leading edge of the document is reached, the ITOP signal 551 becomes "1". , the document scanning unit 11 reaches the area designated by the digitizer 16, and the EN signal 104 becomes "1" during scanning of this area. Therefore, it is only necessary to take in the read color image information (DATA 105, 106, 107) while the EN signal 104 is "1".

As shown in FIG. 9 above, image data transfer from the color reader 1 is synchronized with the ITOP 551, the control signal of the EN signal 104, and the VCLK signal by controlling the video interface 101 as shown in FIG. R data 105, G data 106, and B data 107 are sent to the image storage device 3 in real time.

Next, how the image storage device 3 stores data using these image data and control signals is shown in FIG. 10(A).
This will be explained with reference to (B).

The connector 4550 is connected to the video interface 101 of the color reader 1 via a cable, and the R data 1
05, G data 106, B data 107 C-1 9430R, 9430G respectively.

It is connected to selector 4250 via 9430B. VCLK sent from video interface 101
, EN signal 104, ITOP551 are connected to signal line 94
50 and is directly input to the system controller 4210. Furthermore, prior to reading the document, the area information specified by the digitizer 16 is inputted to the controller 427o through the communication line 9460, and from there is transmitted to the CPtJ bus 9610 to the CP04360G,
m is read.

R data 105 and G data 106 input to selector 4250 via 9430R, 9430G, and 9430B
, B data 107 are sent to signal lines 9420R, 9420G, after synchronizing the signals by selector 4250.
9420B, FIFO memory 4050R, 4
050G.

4050B.

A detailed configuration diagram of this selector 4250 is shown in FIG.

As shown in the figure, image data 9430R, 9430G, and 9430B sent from the color reader 1 are sent to the selector 4.
The data passes through 251R, 4251G, and 4251B and is input to FIFO memories 4252R, 4252G, and 4252B.

Here, selectors 4251R and 4251G.

The input signal to 4251B is the 5ELECT signal 945
1 is selected.

FIFO memory 4252R, 4252G.

42528 G, : is VCLK, EN signal niyori, main scanning 1912 minutes (12 minute width: 4 from address O) shown in Figure 9.
752) image data 9421R.

9421G and 9421B are stored.

This FIFO memory 4252R, 4252G.

4252B also stores signals other than the valid area designated by the digitizer 16.

Next are FIFO memories 4252R and 4252G.

The data stored in 4252B is read out in synchronization with CLK9453 and H3YNC9452 inside the image storage device 3. That is, the difference in the clocks of the color reader 1 and the image storage device 3 is determined by the FIFO memories 4252R and 425.
Absorb with 2G, 4252B.

The system controller 421O uses the FIFO memory 42
Image data 94 from 52R, 4252G, 4252B
Of 20R, 9420G, 9420B, only the effective image area is stored in I-IFO memory 4050R, 4050G, 4
Transfer to 050B. In addition, the system controller 42
10 also performs trimming processing and scaling processing at the same time.

These processes of this embodiment are shown in the circuit diagram of FIG.
This will be explained below with reference to the timing chart in FIG.

That is, FIFO memories 4252R and 4252G.

From 4252B to FIFO memory 4050R.

Prior to data transfer to 4050G and 4050B, the valid area in the main scanning direction of the area specified by the digitizer 16 is written into the RAM 4212 by the CPU bus 9610.

The selector 4213 controls the CPU bus 9610 side to select it and make it valid, and writes "0" data into the valid area of the area specified in the RAM 4212, and writes "1" data into the invalid area.

Next, by controlling the selector 4213, the counter 4214
Select the side to enable, H3YNC9452, CLK9
453 was synchronized. FIFO memory 4050R, 405
0G, 4050B write enable signal 9100 is R
AM4212 and latch 4211 output, and only the effective area (A') of the color image information (A) is written to FIFO memories 4050R, 4050G, and 4050B. Written image data is delayed by one main scan, H3Y
The effective area is sequentially output from address "o" in synchronization with NC9452 (9090R, G, B).

In the above explanation, the FIFO memory 4252R, 4
FIFO memory 4050R stores image data of 252G and 4252B as is (at same size).

An example of transferring to 4050G and 4050B has been described. However, the present embodiment is not limited to the above control, and the data written to the RAM 4212 allows scaling processing and trimming processing.

FIG. 14 shows a timing chart when this scaling process and trimming process are performed.

FIG. 14 shows a FIFO memory 4252R.

Image data from 4252G and 4252B is scaled and reduced by 50%, and stored in FIFO memories 4050R and 4050.
4050B. FIG.

As shown in FIG. 14, write data to the RAM 4212 (FIFO memory 4050R).

In the case of FIG. 14, the write enable signal 9100 is set to "1" (write prohibited) within the image data valid area to restrict reading and perform reduction. 1"
50% reduction is achieved by alternately repeating the "O" data. In this way, by writing data to the RAM 4212 in accordance with the reduction ratio, it is possible to easily write any data in the image recording device 3. You can perform reduction processing by magnification.

This 50% reduced image data has a main scanning delay H
Output from address “0” in synchronization with SYNC (14th
Figure B').

In this way, depending on the data written to the RAM 4212,
Desired image data can be reduced in the main scanning direction.

Next, FIFO memories 4050R and 4050G.

Memory 4060R, 4060G from 4050B.

Image data is transferred to the 4060B using counter 0 (40
80-0), and by control line 9170.

Here, scaling and trimming in the sub-scanning direction are performed simultaneously. The block diagram in Fig. 15 shows magnification change in the sub-scanning direction.
This will be explained below with reference to FIG. 16, which shows a timing chart at the time of 0% reduction.

CPU 4360 is FIFO memory 4050R, 405
0G, 4050B to 406OR.

4060G Before data transfer to 4060B, C
4060R, 4060G, 40 in the sub-scanning direction area of the area specified by the digitizer 16 via the PU bus 9610
Controls writing to 60B data (4060R, 4
Write enable signal to 060G, 4060B) to R
Write to AM4217. The image invalid area is "1", the valid area is "0" when it is the same size, and when it is reduced, the data in the same valid area is "l" according to the reduction ratio, and when it is reduced by 50%, it is "1" in the image valid area. This is achieved by alternately repeating 1" and 0 data.

At this 50% reduction, 4060R, 4060G.

The write enable signal 9170 to 4060B is the 16th
As shown in the figure, "1" and "O" data are alternately repeated within the image effective area.

From this, the image data stored in 406OR, 4060G, and 4060B will be "Do" and "D2" in FIG. 16, and "Dloo" and "D3" will not be stored.

As described above, the data set in the RAM 4212 allows trimming in the main scanning direction and variable magnification.
The data set in AM4217 allows trimming in the sub-scanning direction and variable magnification.

Note that since the memory capacity in this embodiment is 1M bytes for each color, the image data in the reading area in FIG.
By reducing the read image data by 0%, the read image data is converted to data of the maximum capacity of the memory of the image storage device 3,
remembered.

Further, in the above embodiment, the CPU 4360 calculates the effective area from the information of the area specified by the digitizer 16 of the A3 original, and sets the corresponding data in the RAM 4212.6 In this embodiment, the data volume of the read image is Since it was larger than the available image memory capacity, a reduction process was performed to convert it to a storable capacity and then it was stored in the image memory. However, if the data capacity of the read image is smaller than the image memory capacity, it is possible to store a plurality of screens simultaneously in the image memory by setting the CLR signal 9171 in FIG. 15 to "1".゛In this case, the RAM controls the writing of the area specified by the digitizer 16 into the memory.
All data written to RAM 4212 and RAM 4217 is “O”.
”, everything is in state, and it is equal in size.

Also, in order to store the read image in memory while maintaining its aspect ratio (vertical/horizontal ratio), the CPU 4360 first calculates the effective number of pixels "X" from the area information sent from the digitizer 16. Maximum capacity of image storage memory “
y'', calculate Z using the following formula.

-X I OO= z As a result, (1) When Z≧100, RAM4212, RAM4
217, all of the effective image area is set to "O" and stored at the same size.

2) When z<100, RAM4212, RAM421
7, both are reduced by 2% and stored in the maximum capacity of the memory while maintaining the aspect ratio.

Also in this case, RAM4212, RAM4217
The data written to “1” and “” correspond to the reduction rate “Z”.
0" data should be written at the appropriate time.

By controlling in this way, arbitrary scaling processing can be performed with easy control while maintaining the aspect ratio of the input image by controlling only within the image storage device 3, and effective recognition of the read image is possible. Become. At the same time, it is possible to maximize the utilization efficiency of memory capacity.

Read Processing from Image Storage Device> Next, the memory 4060R of the image storage device 3 described above
, 4060G, and 4060B will be described.

When outputting an image from this memory to form an image on the color printer 2, inputting instructions and the like is mainly performed by the digitizer 6 shown in FIG. 7 mentioned above.

The keys 428 in FIG. 7 are 4060R, 4060G, 40
This is an entry key for forming an image using the image data from 60B in the color printer 2 according to the size of the recording paper. Further, a key 429 is an entry key for forming an image at a position indicated by the coordinate detection plate 420 of the digitizer 16 and the point pen 421.

First, an embodiment in which an image is formed according to the size of recording paper, and then an embodiment in which an image is formed in an area designated by a digitizer will be described.

Image forming process corresponding to the size of recording paper> In this embodiment, the color printer 2 has two cassette trays 735 and 736, as shown in FIG. 1, and two types of recording paper are set therein. . Here, A4 size recording paper is set in the upper row and A3 size recording paper is set in the lower row. This selection of recording paper is input through the liquid crystal touch panel of the scanning section 20. Note that the following description will be made regarding the case where a plurality of images are formed on A4 size recording paper.

First, prior to image formation, by inputting read image data from the color reader 1 described above to the image recording device 3, the image memory 4060R, 4060R, 4060R, 4060R, 4060R, 4060R,
60G and 4060B, respectively, store a total of 16 image data of "Image O" to "Image 15" as shown in FIG. 17, respectively.

Next, the entry key 428 of the digitizer 16 is pressed. As a result, the CPU (not shown) detects this key human power, and
The image forming position is automatically set for the size of recording paper. When forming 16 images shown in FIG. 17, the image forming positions are set as shown in FIG. 18, for example.

Details of the above image forming process in this embodiment will be explained below with reference to the block diagram of FIG. 1O and the timing chart shown in FIG. 19.

ITO sent from the color printer 2 shown in FIG. 2 to the color reader l via the printer interface 56
The P signal 511 is input to the video interface 101 in the video processing unit 12, and sent from there to the image storage device 3. The image storage device 3 starts image forming processing in response to the ITOP signal 551. Each image sent to the image storage device 3 is stored in the first image storage device 3.
The system controller 421 shown in FIGS. 0 (A) and (B)
Image formation is performed under control of 0.

In FIGS. 10(A) and (B), counter 0 (408
0-0) is selected by the selector 4070,
Memory address line 9110 connects memory 4060R94.
060G and 4060B are accessed for reading. With this access, each memory 4060R, 4060G
, 4060B is read out, and read image signals 9160R, 9160G from each memory.

9160B is a lookup table (LUT) 411
The signals are sent to 0R, 4110G, and 4110B, where logarithmic transformation is performed to match the relative luminous efficiency characteristics of the human eye. Conversion data 9200R, 9200 from each LUT
G, 9200B is masking/black extraction/UCR circuit 4
120. And this masking/black extraction/
The UCR circuit 4120 performs color correction of the color image signal of the image storage device 3, and also performs UCR/black extraction during black recording.

The image signal 9210 from these continuously connected masking/black extraction/UCR circuits 412o is
Each image is separated by the selector 413o, and each FI
It is input to FO memories 4140-0 to 4140-3. Each image that has been arranged sequentially up until now is now in this FIFO4
Parallel processing is possible due to the action of 140-0 to 140-3.

Read image signals 9160R, 916 from each memory
The relationship between 0G, 9160B and the parallel output image information 9260-0 to 9260-3 from each FIFO is shown in the upper part of FIG.
As shown in the figure, "
9260-0 to 9260-3 corresponding to the read image information of the "0" line of "Image O" to "Image 3" are all in a state where they can be processed in parallel.

The parallel image signals 9260-0 to 9260-3 are input to the next enlargement/interpolation circuits 4150-0 to 4150-3. expansion·
Interpolation circuits 4150-0 to 3 are system controller 42
10, each image is controlled to have the layout shown in FIG. 18, and enlarged and interpolated as shown in signals 9300-0 to 9300-3 shown in FIG. 19. Note that in this embodiment, a linear interpolation method is used.

These interpolated signals 9300-0 to 9300-3 are transmitted to the selector 41
Each image data inputted to 90 and processed in parallel thus far is again converted into a serial image data signal. selector 4
Image signal 9330 converted into serial image data by step 190 is subjected to edge enhancement and smoothing processing by edge filter circuit 4180. Then, through LUT 4200, selector 42304:
is input. Selector 4230 is M (magenta).

This selector selects between C (cyan), Y (yellow), and BK (black) output, or R (red), G (green), and B (blue) output. In this example, M
, C, Y, BK output, and the output is performed in field sequential order, so
Valid image data is output only from signal lines 9410R, 9410G, and 9410B. The selected image data is then input to the selector 4250, 4251R shown in the block diagram of FIG. 11 mentioned above.

9410 by each selector of 4251G and 4251B
R, 9410G, 9410B are selected and 9430R, 9
It is output to connector 4550 as 430G and 9430B.

Hereinafter, when all the image data of "Image O" to "Image 3" has been formed, the next steps are "Image 4" to "Image 7", "Image 8" to "Image 11", and "Image 12J to "Image 3". Images 15J are sequentially formed, and 16 images "Image O" to "Image 15" shown in FIG. 18 are formed.

Image Formation by Layout at Any Position> The above explanation describes the control for developing and forming an image so that it can be automatically formed as shown in FIG. 18, but this embodiment is limited to the above example. It is also possible to form an image by developing an arbitrary image at an arbitrary position.

Hereinafter, as an example of this case, "Image OJ" shown in FIG.
A case will be described in which "Image 3" is developed as shown in the figure and formed into an image.

First, four pieces of image information read from the color reader 1 are transferred to the image memory 4060R under the same control as the image input control to the memory described above.

4060G and 4060B to be stored as shown in FIG. 20. By pressing the entry key 429 of the digitizer 16, the system waits for the input of the specified position of the read image from the digitizer 16 at which the image should be formed.

Then, operate the point pen 421 to detect the coordinates on the coordinate detection plate 42.
Specify and input the desired deployment position from 0.

For example, a development area is specified and input as shown in FIG.

The image forming process in this case will be described below with reference to the block diagrams shown in FIGS. 10(A) and 23(B) and the timing charts shown in FIGS. 22 and 23.

FIG. 22 is a timing chart during image formation on the "β1" line shown in FIG. 21, and FIG. 23 is a timing chart during image formation on the "β2" line shown in FIG.

The ITOP signal 551 is output from the printer 2 in the same manner as described above, and the system controller 4210 starts operating in synchronization with this signal.

In the image layout shown in FIG. 21, "Image 3" is an image obtained by rotating the image from the color reader 1 by 90 degrees.

This image rotation process is performed in the following steps. first,
406OR, 4G60G by DMAC (Direct Memory Access Controller) 4380 in Figure 1
, 4060B to the work memory 4390 by the CPU 4360.
After performing known image rotation processing within the DMAC438
0, work memory 4390 to 406OR,4
Images will be transferred to 060G and 4060B, and image rotation processing will be performed.

The position information of each image laid out and inputted by the digitizer 16 is stored in the video processing unit 1 in FIG.
2 to the image storage device 3. The system controller 42 receives the development position information for each image.
10 is an enlargement/interpolation circuit 4150-0 corresponding to each image.
-3 operation permission signals 9320-0 to 9320-3 are generated.

In the layout at any position in this example,
For example, counter O (4080-0) is set to image O, counter 1 (4080-1) is set to image l, counter 2 (
4080-2) is image 2, counter 3 (4080-
3) operates corresponding to image 3, respectively.

Control during image formation on the "I21" line shown in FIG. 21 will be explained with reference to FIG. 22.

Reading “Image O” from the image memories 4060R, 4060G, and 4060B is performed using counter 0 (4080-0).
The outputs of the counters 4080-0 to 3 are switched by the selector 40.
70.

Similarly, when reading “Image 1”, counter 1 (4
080-1), the data from address "0.5M" to address "IM" (the storage area of "image 1" shown in FIG. 20) is read out. The timing of this readout is shown in Figure 22.
Shown as 6OR,G,B.

Here, counter 4080-2 and counter 4080
-3 is not activated by counter enable signals 9130-2 and 9130-3 from system controller 4210.

The data of "Image O" and "Image 1" is LUT4110
It is sent to the masking/black extraction/UCR circuit 4120 via R, 4110G, and 4110B, where it becomes a frame-sequential color signal 9210. This frame sequential color signal 9210 is parallelized by the selector 4120, divided for each pixel, and sent to the FIFO memory 4140-0.4140-1.

Then, an operation permission signal 9 is sent from the system controller 4210 to the enlargement/interpolation circuit 4150-0.4150-1.
When 320-0.9320-1 is enabled, the enlargement/interpolation circuit 4150-0°4150-1 enables the FIFO read signal 9280-0.9280-1 and starts read control.

FIFO memory 4140-0.4140-1 starts transferring image data to enlargement/interpolation circuit 4150-0.4150-1 in response to signal 9280-0.9280-1. And this enlargement/interpolation circuit 4150-0.4
150-1 performs layout and interpolation calculations according to the area previously designated by the digitizer 16. This timing is shown in Figure 22 (7) 9300-0.9300-1
4: Show.

“Image O” and “Image 1” after layout and interpolation calculations
” data is selected by selector 4190,
It passes through an edge filter circuit 4180 and is input to LUT 4200. The subsequent processing up to the connector 4550 is the same as described above, so the explanation will be omitted.

Next, with reference to FIG. 23, the timing of the "°C2" line shown in FIG. 21 will be explained.

The processing from the image memories 4060R, 4060G, and 4060B to the enlargement/interpolation circuits 4150-1 and 4150-2 is substantially the same as described above.

However, in the “℃2 line,” “Image 1” and “Image@2 J” are output, so the counter 1 (4
080-1) and counter 2 (4080-2), FIF
O4140-1, 4140-2, expansion/interpolation circuit 415
0-1.4150-2 works. These controls are performed according to control signals from system controller 4210.

As shown in FIG.
” and “Image 2” overlap. In this overlapping area, the system controller 42 determines whether to form either image or both images.
10 by control signal 9340.

The specific control is the same as in the above case.

The signal from connector 4550 is connected to color reader l by a cable. Therefore, the video interface 101 of the color reader 1 selectively outputs the image signal 105 from the image storage device 3 to the printer interface 56 through the signal line path shown in FIG.

Although the above explanation has been given for M, C, Y, and BK cases, by controlling the selector 4230 in FIG. 10 for image data output from the image storage device 3, R, G
, B parallel output is also possible. At this time, the video interface 101 of the color reader I transfers image data through the signal line path shown in FIG.

Details of the process of transferring image information from the image recording device 3 to the color printer 2 during image formation in this embodiment described above will be described below with reference to the timing chart of FIG. 24.

As described above, by pressing the start button on the operation unit 20, the printer 2 starts operating and starts conveying the recording paper. When the recording paper reaches the tip of the image forming section, the IT
An OP signal 551 is output. This ITOP signal 551 is sent to the image recording device 3 via the color reader 1.

The image storage device 3 reads the image data stored in each of the image memories 4060R, 4060G, and 4060B under set conditions, and performs the layout, enlargement, and
After processing such as interpolation, the processed image data is sent to the video processing unit 12 of the color reader l. The video interface 101 of the video processing unit 12 processes the types of data (R, G, B)/(M, C,
Y, BK), the processing method in the video interface 101 is changed.

In this embodiment, since M, C, Y, and BK are output sequentially, the above operation is repeated four times in the order of M, C, Y, and BK to form an image.

Printer Section> Finally, the configuration of the color printer 2 that prints out the image signal processed by the video processing unit 12 as described above will be described with reference to FIG.

In the configuration of the printer 2 in FIG. 1, 711 is a scanner, a laser output unit that converts the image signal from the color reader 1 into an optical signal, a polygon mirror 712 of a polyhedron (for example, an octahedron), and a rotation of this polygon mirror 712. motor (not shown) and f/θ lens (imaging lens) 7
It has 13 mag. Reference numeral 714 indicates a reflecting mirror that changes the optical path of the laser beam from the scanner 711, which is indicated by a dashed line in the drawing.715 indicates a photosensitive tram.

The laser beam emitted from the laser output section is reflected by a polygon mirror 712, and is scanned linearly (raster scan) on the photosensitive drum 715 by an f/θ lens 713 and a reflecting mirror 714, thereby creating a latent image corresponding to the original image. form.

In addition, 717 is a primary charger, 718 is a full exposure lamp,
723 is a cleaner section that collects residual toner that has not been transferred; 724 is a pre-transfer charger; these members are arranged around the photosensitive drum 715. 726 is a developing unit that develops the electrostatic latent image formed on the surface of the photosensitive drum 715 by laser exposure;
(for yellow), 731M (for magenta), 731C (for cyan), and 7318K (for black) are photosensitive drums 7
Developing sleeve, 730Y, which performs direct development in contact with 15.
Toner hoppers 732 in 730M, 730C, and 7308 that hold reserve toner are screws that phase the developer.

The sleeves 731Y to 7318K, the toner hoppers 730Y to 7308, and the screw 732 constitute the developer unit 726, and these members are arranged around the rotation axis P of the developer unit 726.

For example, when forming a yellow toner image, yellow toner development is performed at the position shown in this figure, and when forming a magenta toner image, the developing unit 726 is rotated around the axis P in the figure, and the photoreceptor is rotated. A developing sleeve 731M in the magenta developing device is disposed at a position in contact with 715. Similarly, for cyan and black development, move the developer unit 726 along the axis P in the figure.
It operates by rotating around the center.

Further, 716 is a transfer drum that transfers the toner image formed on the photosensitive drum 715 onto paper, 719 is an actuator plate for detecting the moving position of the transfer drum 716, and 720 is a drum that is in close proximity to this actuator plate 719. 725 is a transfer drum cleaner, 727 is a paper pressing roller, 728 is a static eliminator, and 729 is a transfer charger, and these members 719.7
20, 725, 727, and 729 are arranged around the transfer roller 716.

On the other hand, 735, 736 are paper feed cassettes that collect paper (paper sheets), 737, 738 are paper feed rollers that feed paper from cassettes 735, 736, and 739, 740, 741
is a timing roller that takes timing of paper feeding and conveyance. The paper fed and conveyed via these is guided by a paper guide 749 and wrapped around the transfer drum 716 while its leading end is carried by a gripper (to be described later), and moves to the image forming process.

Further, 550 is a drum rotor, and the photosensitive drum 715
and the transfer drum 716 are rotated synchronously.

750 transfers the paper to the transfer drum 716 after the image forming process is completed.
742 is a conveyor belt that conveys the removed paper, and 743 is an image fixing unit that fixes the paper conveyed by the conveyor belt 742. In the image fixing unit 743, the motor is attached to the The rotational force of the motor 747 attached to the roller 748 is transmitted to a pair of thermal pressure rollers 744 and 745 via a transmission gear 746, and fixes the image on the paper conveyed between the thermal pressure rollers 744 and 745.

The printout process of the printer 2 having the above configuration will be described below with reference to the timing chart of FIG. 24.

First, when the first ITOP5'51 arrives, a Y latent image is formed on the photosensitive drum 715 by laser light, this is developed by the developing unit 731Y, and then transferred to the paper on the transfer drum, and magenta print processing is performed. It is done. The developing unit 726 then rotates around the axis P in the figure.

When the next ITOP 551 arrives, an M latent image is formed on the photosensitive drum by laser light, and cyan print processing is performed in the same manner. ITOP5 following this movement
Corresponding to 51, the same process is performed for C and BK, and yellow print processing and black print processing are performed. When the image forming process is completed in this way, the paper is then peeled off by the peeling claw 750, and the image fixing section 743 fixes the paper, completing the printing of a series of color images.

[Embodiment 2] Hereinafter, another embodiment according to the present invention will be described in detail with reference to FIGS. 25 to 27.

FIG. 25 is a block diagram of a video image forming system according to another embodiment of the present invention.

The system of this embodiment has a configuration in which a video image from a video device 1 is stored in an image storage device 3 and outputted to a monitor 4 or a color printer 2, as shown in FIG. The image processing device 3 also handles input images.

Control of importing video images> First, the image storage device 3 stores the video images from the video equipment 1.
Control of import into the image storage device will be explained below with reference to block diagrams of the image storage device shown in FIGS. 26(A) and 26(B).

Components similar to those in FIGS. 10(A) and 10(B) are designated by the same reference numerals, and detailed description thereof will be omitted.

The video image from the video equipment is transmitted via an analog interface 4500 to an NTSC composite signal 900.
The signal is input in the form of 0, and is separated by the decoder 4000 into four signals 9015R, G, B, and S: separate R, G, and B signals, and a composite 5YNC signal.

Further, the decoder 4000 has an analog interface 4
5oO to (7)Y Ul+ degree)/C (cross) signal 9
010 is also decoded in the same manner as above. 902OR, 9020G, 9020B, 9 to selector 4010
The 02OS signals are input signals in the form of separate R, G, B signals and a composite 5YNC signal. Note that the switch 4530 outputs signals 9030R-S and 9015R.
-S is a switch that controls a selector 4010 for selecting and switching one of the inputs. switch 453
0 selects signal 9030R-3 when it is open, and selects signal 9015RNS when it is closed.

Separate R and G selected by selector 4010
, 905OR, 9050G, 9050B as B signal
Each signal of A/D converter 402OR, 4020G
, 4020B performs analog/digital conversion.

In addition, the selected composite 5YNC signal 9050S
is input to the T B C,/HV separation circuit 4030,
The TBC/HV separation circuit 4030 converts the clock signal 9060 from the composite 5YNC signal 9050S.
C1 horizontal synchronization signal 9080H and vertical synchronization signal 9060
V is generated. These synchronization signals are provided to system controller 4210.

The TVCLK9060c signal output from the T B C/HV separation circuit 4030 of this embodiment is 12.25 M'H.
z clock signal, TVHSYNC9060H signal Hahalus width 63.5uS (F) signal, TVVSYNC906
The 0V signal has a pulse width of 16.7 mS.

FIFO memory 4050R, 4050G.

4050B is reset by the TVHSYNC9Q60H signal, and data 9060R is sent from address "O" in synchronization with the TVCLK9060G signal.

The FIFO memories 4050R, 4050G, and 4050B are written using the WE signal 9 output from the system controller 421O.
452 is energized.

This FIFO memory 405 by this WE signal 9452
Details of write control of 0R, 4050G, and 4050B will be explained below with reference to the block diagram of FIG. 27.

In this embodiment, the video equipment l is NTSC standard S.
It is a V recorder. Therefore, when the video image from video equipment 1 is digitized, 640 pixels (H) x 48
The screen capacity is 0 pixels (V). Therefore, first, the CPU 4360 of the image storage device 3 writes "0" to the RAM 4213 for 640 pixels in the main scanning direction.
2 input counter 4211 side, and this RAM 421
Similar to the case of Example 1 above, the data from 3.
O memory 4050R, 4050G.

4050B(7) Data for WE signal control. Here, by writing “0” to the RAM4213, the A/D
Converter 402OR, 4020G.

9060R is the output signal from 4020B.

Data for one main scan of the video images of 9060G and 9060B is stored in the FIFO memory 4050R.

It is stored in 4050G and 4050B at the same size.

On the other hand, the input video image is reduced and stored in the FIFO memory (-IJ
4050R, 4050G, 4050B! : When storing, reduction in the main scanning direction is possible by setting the data in the RAM 4213 in the image effective area to "1" according to the reduction ratio.

FIFO4050R, 4050G, 4050B to 40
Data transfer to 6OR, 4060G, and 4060B is performed from color reader l in Example 1 described above to 406OR.
, 4060G, and 4060B.

Reduction in the sub-scanning direction is also possible by setting data in the RAM 4217 in FIG. 15.

Furthermore, the video equipment 1 of this embodiment is of the Nl5C standard, and the aspect ratio of the digital image in the main scanning direction and the sub-scanning direction is 4:3, but this is expected to be the standard of future televisions. HDTV standard aspect ratio 1
Also for 6:9, RAM4213 and the first
This can be handled by rewriting the contents of the RAM 4217 shown in FIG.

In addition, for the memory capacity of 2M bytes in this embodiment, NT
Since the capacity of one screen according to the SC standard is approximately 0.3 MB, it is possible to store images of 6 screens. The memory of these six screens is also stored in the CL R9171 shown in Figure 15.
This is possible by setting it to 1”.

Also, 1840 pixels (main scanning direction) according to the HDTV standard
For X1035 (sub-scanning), set CLR9171 to “
By setting the value to 0'', one screen can be stored in a 2M byte memory.

Furthermore, it is also possible to support the use of high-band video equipment 1. That is, the TBC/HV separation circuit 4 of this embodiment
By increasing the TVCLK output from 030, it is possible to increase the number of pixels read in the main scanning direction.

The video image data stored in 4060R, 4060G, 4060B is read out by DMAC 4380, and the video image data stored in display memory 4410R, 4410G, 44
10B and stored. display memory 4
The video image data stored in 410R, 4410G, 4410B is stored in LUT 4420R, 4420G, 442
D/A converter 4430R, 4430G through 0B
, 4430B, and here, in synchronization with the 5YNC signal 4590S from the display controller 4440, analog R signal 4590R, G signal 4590G, B signal 4
590B and output.

On the other hand, the display controller 4440 outputs a 5YNC signal 9600 in synchronization with the output timing of these analog signals. This analog R signal 4590
By connecting the R, G signal 4590G, B signal 4590B, and 5YNC signal 4590S to the monitor 4, the stored contents of the image storage device 3 can be displayed.

Furthermore, in this embodiment, the mouse interface 43
It is possible to trim the displayed image using the mouse 5 connected via the signal line 4570 from 00.

The CPU 4360 selects the image memory 4060R from the display memories 4410R, 4410G, and 4410B based on the area information inputted using the mouse 5 under the same control as in the first embodiment described above.

Trimming is possible by transferring only the effective area to 4060G and 4060B.

In addition, in response to area instruction information from the mouse 5, RAM
By setting data in 4213 and RAM 4217 in the same manner as in the first embodiment, and again inputting image data from the SV recorder that is video equipment 1, the trimmed image data can be stored in 406OR, 4060G, 4060
It can be stored in B.

Note that 4400 is a volume for adjusting the tone of the color image displayed on the monitor 4. CPU43
60 reads the resistance value (setting value) of this volume 4400, and from this setting value LUT 4420R, 4420G
, 4420B, set the output adjustment correction data.

Also, when recording with the color printer 2, the LUT 420 is used to match the display color of the monitor 4 with the recorded color.
0 table adjustment correction data with a volume of 4400
Changes in conjunction with the setting value.

Next, image memories 4060R and 4060G.

When a plurality of images are stored in the 4060B, the layout of each image when recorded by the color printer 2 can also be done using the monitor 4 and mouse 5.

First, the size of the recording paper is displayed on the monitor 4, and the layout of each image to be printed by the color printer 2 can be laid out by inputting positional information for each image layout using the mouse 5 while viewing this display.

Image memory 4060R, 4060G at the time of Kono.

The reading control of stored information from the 4060B to the color printer 2 and the recording control in the color printer 2 are the same as in the first embodiment described above, and therefore the explanation thereof will be omitted.

<margin below>> As explained above, according to this embodiment, the color reader 1
By specifying only the truly necessary image area of the input image information from the computer, video equipment IA, etc., other parts are not stored in the memory, and the memory can be used effectively. In addition, the required area can be reliably stored in memory,
There is no longer a need for a place to store necessary information.

Furthermore, by laying out the extracted image information on the memory and inputting the expansion area,
The image information can be easily viewed when output.

[Effects of the Invention] As explained above, according to the present invention, necessary image information can be stored in the storage means reliably and efficiently.

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram of an embodiment of the present invention, Fig. 2 is a detailed block diagram of a color reader 1 of this embodiment, and Figs. 3 to 6 are video interfaces of the color reader 1 of this embodiment. 7 is an external view of the digitizer of this embodiment. FIG. 8 is a diagram illustrating address information instructed by the digitizer of this embodiment. FIG. 9 10 (A) and (B) are output timing charts from the interface section to the image storage device of this embodiment.
) is a detailed block diagram of the image storage device of this embodiment, FIG. 11 is a detailed diagram of the selector section of the image storage device of this embodiment, and FIG. 12 is a detailed diagram of the system controller section and FIFO memory of the image storage device of this embodiment. FIG. 13 shows the FI of the system controller during isothermal processing in this embodiment.
A timing chart when data is stored in the FO memory. FIG. 14 is a timing chart when data is stored in the FIFO memory of the system controller during scaling processing in this embodiment. FIG. 15 is an image storage device in this embodiment. 16 is a timing chart of data storage in the image memory of the system controller during scaling processing in this embodiment. FIG. 17 is a detailed diagram of the system controller unit and image memory related configuration. FIG. 18 is an image forming layout diagram of this embodiment; FIG. 19 is a timing chart of image forming processing according to the image forming layout of FIG. 18; FIG. A layout diagram of image information in the memory of another image storage device of this embodiment. FIG. 21 is a diagram showing a state in which the image information shown in FIG. 20 is arbitrarily laid out. FIG. 23 is a timing chart of image formation in a 2'° line as in FIG. 21. FIG. 24 is a timing chart of the image forming process of this embodiment. is a system configuration diagram of another embodiment according to the present invention, FIGS. 26(A) and (B) are block diagrams of an image storage device of another embodiment, and FIG. 27 is a block diagram of an image storage device of another embodiment. It is a detailed diagram of the system controller. In the figure, 1...color league, IA...video equipment,
2...Color printer, 3...Image storage device, 4A
...Monitor, 5A...Mouse, 11...Document scanning unit, 12...Video processing unit, 3...Control unit, 16...Digitizer, 20...
・Operation unit, 46, 4050, 4140, 4252.・・・
・FIFO memory, 56... Printer interface, 101... Video interface, 420... Coordinate detection plate, 421... Point pen, 4000...
Decoder, 4010.4070, 4130°4190.
4213,4218,4230゜4250.4251・
...Selector, 4020°4430...A/D converter, 4060...Image memory, 4080, 4211, 4
214.4219...Counter, 4110,4220
．． 4420...LUT, 4120...Masking/
Black extraction/UCR circuit, 4150...enlargement/interpolation circuit,
4210...System controller, 4220...
Printer interface, 4212.4217...R
A.M. 4270...Reader controller, 4300...Mouse controller, 4360...CPU, 4380...
・・DMAC, 4400 ・Volume, 4410・
. . . Display memory, 4440 . . . Display controller. Patent applicant: Canon Co., Ltd.;,), -;--J Fig. 3 Fig. 5 Fig. Fig. Fig. 4060R Nubo +1 (R) 060G Meke 1/(G) Meke bow (B) No. 20 figure

Claims (2)

[Claims] (1) A storage means for storing input image information, an instruction means for instructing the size of the image information in the input image information to be stored in the storage means, and a size of the input image information according to the instruction of the instruction means. The storage means includes a holding means for holding specific information that specifies a storage range in the storage means, and a storage control means for controlling the storage of input image information in the storage means in accordance with the specific information held in the holding means. An image storage device characterized by: (2) The storage control means controls the storage means to store image information in a range specified by the specific information held in the storage means, and an unstored area generated in the storage means by performing such storage. 2. The image storage device according to claim 1, wherein the image storage device is a means for storing other image information.