JPH02308269A - Image signal processor - Google Patents

Abstract

PURPOSE:To enhance the degree of freedom in combining functions without enlarging the scale of a circuit and increasing the patterns of parameter by preparing plural patterns for setting an image processing part which is used in the respective functions and selecting the pattern in accordance with the combination of the functions. CONSTITUTION:A main image processing part is constituted of a color conversion processing part 123, an output masking processing part 124, a gamma correction processing part 125, an edge emphasis processing part 126 and a binarization processing part 127. Data is set in each image processing part from a main CPU 100 and a reader part CPU 104 through a data bus 132. Each image processing part has two data banks and selects either of them according to control signals 128-131 and 135-137 from an editing processing part 120, so that image processing in accordance with the parameter set in the selected data bank is executed. The selected pattern of each data bank of each image processing part is set corresponding to the image processing which should be executed from the main CPU 100 through the data bus 132.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image signal processing device that can combine and execute image processing under different conditions on input image signals.

[Prior Art] Conventionally, in an image processing device that is equipped with multiple processing functions necessary for executing image processing and performs desired image processing on an input image signal and outputs the result, a selection function is selected for each image processing. A processing function to be executed is uniquely determined, and each time an image process to be executed is selected, the uniquely determined processing function is selected and executed.

An example of such a conventional image processing device is shown in FIG.

In FIG. 11, 2 is an image processing system having three mutually different image processing sections A, B, and C.

This image processing system Z has, for example, three components, I, ff, and III.
Image processing can be performed for two functions.

For example, as shown in Table 1, image processing section B is used for functional engineering, and image processing section A,
Image processing section B is used for function III.

In such a case, functions I and (2), and (2) and (2) use different image processing units, so they can be combined and executed simultaneously.

Further examples of image processing are shown in FIGS. 12 and 13.

In this example, as shown in FIG. 12, it is assumed that the image information to be processed is divided into area a, area b, area C, and back d, and image processing is applied to each area using a different function.

FIG. 13 shows an image processing system that performs image processing for each area shown in FIG. 12.

As shown in FIG. 13, conventionally, for example, E.

FEquipped with three image processing sections, each image processing section.

Two banks D1 and D2, El and F2, and Fl and F2 are provided for each of E and F to correspond to two types of data.

Each bank is switched by a bank switching signal from a control section (not shown) indicated by reference numerals 1, 2.3 in the figure.

Here, function I is used for area a, function ■ is used for area b, function ■ is used for area C, and no particular function is used for back d, as shown in Figure 12. It is assumed that normal image processing is set as shown in Table 2.

and 1. The image signal is input as a serial scan signal with main scanning in the X direction and sub-scanning in the Y direction in FIG. Data such as processing parameters of image processing data (back d) are set, and data such as variation for each image processing is set in bank 2.

[Problems to be Solved by the Invention] However, in the conventional example, since the image processing unit for a certain function is uniquely determined, there are the following drawbacks.

That is, in the conventional example shown in FIG. 11, the same image processing section B must be used for the combination of function I and function (2). Therefore, as it is, it is impossible to execute function I and function (2) at the same time. If it is necessary to use function engineering and function ■ at the same time,
New parameters for this combination must be created and provided, which puts a burden on the parameter storage memory, especially when a large number of parameters are to be set.

Furthermore, in the configuration shown in Fig. 5, if the area settings are as shown in Fig. 12, for example, the same image processing section E is set for area a and area C, so it cannot be dealt with as is as above. , it is not possible to perform image processing at the same time.

After the image processing unit E finishes processing area a, it may be possible to re-set the data for area C in bank E2 of the image processing unit E, but the speed at which the images to be processed are input (flow Since it takes a long time to set the data in the image processing section E compared to the speed at which the data is set, it is impossible to set the data because the processing timing in the image processing section E comes before the data is set. It has also been considered to provide as many banks of image processing units as there are areas, but this would increase the scale of the image processing units and increase costs.

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

That is, in an image processing apparatus capable of performing image processing under different conditions on an input image signal in combination, a plurality of image processing units having different functions, a determining means for determining required image processing conditions, and a a selection means for selecting a selection combination pattern of each of the image processing units for the image processing conditions determined by the determination unit; and a registration unit for registering processing parameters in each of the image processing units according to the combination pattern in the selection unit; Equipped with.

[Operation] With the above configuration, it is possible to select a combination pattern of image processing units that perform image processing according to image processing conditions at any time to obtain a desired processing form. As a result, even if multiple image processing conditions are set during processing of one line, for example, each of the image processing sections can be selected to avoid conflict among the requested processing conditions, and the combination of one function can be It becomes possible to take any processing form without changing the circuit configuration depending on the state.

[Example] Hereinafter, an example according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an external view of a digital color copying machine to which an embodiment of the image signal processing device according to the present invention is applied.

This digital color copying machine 10 is roughly divided into two elements.

That is, as a first major element, a color image scanner section (hereinafter abbreviated as "reader section") 12 is provided which reads the document image located above in color and outputs digital color image data. The league unit 12 includes a controller unit 14 that performs various image processing on digital color image data and has processing functions such as interface with external devices.

The second major element is a printer section 20 located below the league section 12 for recording the color digital image signal output from the controller section 14 of the league section 12 onto recording paper. ing.

The league unit 12 reads image information from originals of various shapes and sizes, such as three-dimensional, sheet-like, or large-sized sheet-like originals, which are placed face down on a document table (not shown) below the original holding plate 16. It also has a built-in mechanism.

Further, on one side of the upper surface of the league section 12, an operation section 18 connected to the controller section 14 is provided. This operation section 18 is for inputting various information and operation fingers for the copying machine.

Further, the controller section 14 is configured to issue operational instructions to the league section 12 and the blink section 20 in accordance with information input manually via the operation section 18. and,
When it is necessary to perform complicated editing processing, etc., a digitizer or the like can be attached in place of the original presser plate 16 and connected to the controller section 14.
More advanced image processing becomes possible.

On the other hand, in the printer section 20 of this embodiment,
A full color ink jet printer using an ink bubble jet recording head as described in Japanese Patent No. 4-59936 is used.

The above-mentioned two main elements can be separated from each other, and by extending the connecting cable, they can also be installed at locations apart from each other.

The following general elements will be explained in detail.

FIG. 2 shows the digital color copying machine 10 shown in FIG.
FIG. 2 is a cross-sectional view schematically showing the internal configuration of the device when viewed from the side.

(League Division 12) First, the configuration of the league section 12 of the copying machine 10 will be explained.

In the league part 12, an exposure lamp 22, a lens 24
, and an image sensor 26 (in this embodiment, a CCD sensor is used) capable of reading line images in full color, the image of the document placed on the document table glass 28, the image projected by the projector, or the sheet feed. The image of the sheet-like original is read by the mechanism 30.

Next, the league section 12 and the controller section 14 perform various types of image processing on the image information read by the league section 12 in this way, and then the read and image-processed information is sent to the printer section 20. It is then recorded on recording paper.

(Printer section 20) Next, in the printer section 20, recording paper is stored in a paper feed cassette 32 that stores cut sheets of small standard sizes (A4 to A3 size in this embodiment) and large size (A2 in this embodiment). to A1 size) is selectively supplied from the roll paper 34 for recording.

Further, paper feeding is started in response to a print start instruction from the controller unit 14 and a print start instruction from the controller unit 14, and the paper is first conveyed to the 10th feeding position 44 through the following route. In addition, in this embodiment, it is also possible to perform manual paper tightening (feeding from outside the apparatus) by manually inserting recording paper one sheet at a time from the manual feed port 36 along the paper feed section cover 38. ing.

In the case of feeding recording paper from the paper cassette 32 installed in the printer unit 20, cut sheets are placed one by one from the paper cassette 32 on the upper surface of the paper feeding end of the recording paper set side of the paper cassette 32. A big up roller 40 for taking out is provided. For this reason, Big Up Roller 4
0, the uppermost recording paper set in the paper feed cassette 32 is taken out, and the cut paper feed roller 4
2, and further conveyed by the rollers to the 10th sheet feeding roller 44.

On the other hand, in the case of roll paper 34, roll paper feed roller 4
6, the sheet is continuously fed out, cut into a standard length by a cutter 48, and conveyed to the above-mentioned sheet feeding position 44.

Similarly, when paper is fed manually from the manual feeder 036, the manually fed recording paper is conveyed to the paper feeding roller 44 by the manual feed roller 50.

Here, a big up roller 40, a cut paper feed roller 42, a roll paper feed roller 46, a 10th paper feed roller 4
4. The manual feed roller 50 is driven by a paper feed motor (not shown) (in this embodiment, a DC servo motor is used), and the rotational drive is controlled on and off as needed by an electromagnetic clutch attached to each roller. It is configured so that it can be performed.

The recording paper selectively fed from any of the above-mentioned paper feeding paths in this manner is conveyed to the paper feeding number 10-ra 44.

In addition, in order to remove the skew of the recording paper, in this paper feeding, after forming a predetermined amount of paper loops on the recording paper, the paper feeder 44 is turned on and rotated. Next, the recording paper is conveyed to the paper feeding number 20-ra 52.

Further, between the paper feed number 10-ra 44 and the paper feed number 20-ra 52, there is a paper feed roller 64 disposed above the recording head 56, and a paper feed roller 64 disposed below the paper feed number 20-ra 52. In order to perform accurate paper feeding operation between the recording paper and the roller 52, the recording paper is configured to slacken by a predetermined amount to create a buffer. A buffer amount detection sensor 54 is disposed in this buffer to detect the buffer amount as the amount of slack in the recording paper. By constantly creating a buffer in the recording paper during paper conveyance in this way, the load on the paper feed roller 64 and the paper feeding roller 52 can be reduced, especially when conveying large-sized recording paper. This enables accurate paper feeding operations.

In the printer section 2o configured with the recording paper conveyance system as described above, when the recording head 56 prints, the scanning carriage 58 on which the recording head 56 is mounted is moved by the scanning motor 62 on the carriage rail 60. It is configured to reciprocate in the front and back directions of the drawing and scan the recording paper in the main scanning direction. In the forward scan, an image is printed on the recording paper by the recording head 56, and in the backward scan, the paper feed roller 64 performs a feeding operation in the sub-scanning direction to advance the recording paper by a predetermined amount.

Here, the feed amount along the sub-scanning direction is defined as a constant movement amount to be described later, and here, the feed amount along the sub-scanning direction is
The length is set to correspond to the width along the sub-scanning direction of 1, that is, the length corresponding to the arrangement width of the suction hole formed over the surface portion of the platen 74 facing the recording head 56 (not shown). ing. This suction hole is for keeping the recording paper in close contact with the platen 74.

In addition, in the recording paper drive control by the scanning motor 62 during this backward scanning, the buffer amount detection sensor 54
While detecting the buffer amount through the , the buffer amount is controlled to always be a predetermined buffer amount.

The printed recording paper is then discharged to the paper discharge tray 66, completing a series of printing operations.

(Configuration of Scanning Carriage System) Next, the configuration around the scanning carriage 58 will be explained in detail with reference to FIG.

- In FIG. 3, 68 is a paper feed motor as a drive source for intermittently feeding the recording paper along the sub-scanning direction. The rotation amount of this paper feed motor 68 can be set arbitrarily.
The paper feeding roller 64 and the paper feeding 20th roller 52 can be changed via the paper feeding roller 64 and the paper feeding 20th roller clutch 70.
It is configured to drive.

Further, the aforementioned scanning motor 62 is connected to the scanning carriage 58.
It is provided as a drive source for reciprocating scanning along the main scanning direction indicated by arrows A and B via the scanning belt 72.

Note that in this embodiment, since accurate paper feed control is required at an arbitrary feed amount, the paper feed motor 68 and the scanning motor 62 are
Pulse motors are used in

In this embodiment, a paper pressing member (not shown) is disposed at a position opposite to the lower end of the platen 74, and the paper pressing member fixes the recording paper to the platen while the scanning carriage 56 is scanning. It is controlled so that paper movement does not occur.

Here, when the recording paper reaches the paper feed number 20-ra 52,
The clutch 70 for the 20th paper feed and the paper feed motor 68 are turned on, and the leading edge of the recording paper is moved between the pair of paper feed rollers 64.
The paper is conveyed on the platen 74 until it is nipped by the paper. A paper detection sensor 76 provided on the platen 74 detects that the conveyed recording paper has passed through the platen 74, and the sensor information is used for position control, jam control, and the like.

When the leading edge of the recording paper reaches the paper feed roller 64, the clutch 70. The paper feed motors 68 are respectively turned off, and then a negative pressure is created in the inner space of the platen 74 by activation of a suction motor (not shown), and a suction operation is started. This suction operation brings the recording paper into close contact with the platen 74. At this time, the paper pressing member described above also fixes the recording paper to the platen.

Here, prior to the image printing operation on recording paper, the scanning carriage 58 is moved to a position where the home position sensor 78 is disposed, and then forward scanning is performed in the direction of arrow A. In this forward scanning, cyan "C", magenta "M", yellow"
An image is recorded (printed) by ejecting Y'' and black K'' inks from the recording head 56 as appropriate.

After completing the image recording operation for a predetermined length along the main scanning direction, the driving direction of the scanning motor 62 is reversed, and the scanning carriage 58 is moved in the opposite direction, that is, in the direction shown by arrow B, to perform the backward scanning. Start.

Scan motor 62 is driven in reverse until scan carriage 58 returns to the home position sensor 78 location.

Also, during this backward scanning, by starting the paper feed motor 68 and rotationally driving the paper feed roller 64, the arrow C
A paper feeding operation is performed by the length (width of the recording head 56) along the sub-scanning direction recorded by the recording head 56 as indicated by . Note that in this embodiment, this paper feed amount, that is,
The amount of movement in the sub-scanning direction is not only set as a fixed amount of movement corresponding to the width of the recording head 56 described above (in some cases, it is set as a one-way amount of movement defined by the final line width).

In this embodiment, the recording head 56 is an ink jet nozzle, and a total of 256 nozzles are assembled for each color of Y, M, and C.

On the other hand, when the scanning carriage 58 stops at the home position defined by the home position sensor 78,
A recovery operation of the recording head 56 is performed. This recovery operation is a process for performing a stable recording operation, and is a process for preventing unevenness at the start of ejection caused by changes in the viscosity of ink remaining in the nozzles of the recording head 56. In this process, the recording head 56 is
Pressure is applied to each nozzle, and ink is idly ejected from each nozzle.

By repeating the operations described above, the desired image will be recorded over the entire surface of the recording paper.

(System Configuration) Next, image signal processing and control of the control system in the digital color copying machine IO of this embodiment will be explained with reference to FIG.

In FIG. 4, reference numeral 100 is a main CPU that controls the entire apparatus, and the main CPU 100 includes a printer control flcPU 102 that controls printer control operations, a reader control CPU 104 that controls reading control operations, and an image display unit. A main image processing section 106 for processing operations and an operation section 108 as an input section for an operator are connected.

Here, the printer control CPU 102 and the league control 1cP
U104 controls the operations of the printer section and league section, respectively, and is set in a mask-slave relationship with the main CPU 100.

The main image processing unit 106 described above performs image processing such as edge emphasis smoothing, masking, black extraction, binarization, and trimming. Further, a synchronous memory 110 is connected to the printer control CPU 102 and the main image processing section 106. This synchronous memory 110 is for absorbing time variations in input operations and for correcting delays due to the mechanical arrangement of the recording heads described above. The output of this synchronous memory 110 is connected to the recording head 56.

Printer system (IICPU 102 is connected to a printer unit drive system 114 that controls input drive of the printer unit.

In addition, the league control CPU 104 performs shading correction,
It is connected to an input system image processing section 116 that performs necessary correction processes in the reading system such as color correction and γ correction, and to a league section drive system 118 that controls league input drive.

Furthermore, a CCD line sensor 120 is connected to the input system image processing section 116.
is connected to the main image processing section 106.

Here, the league section 12 includes a main CPU 100, a reader control CPU 104, a main image processing section 106, and an operation section 10.
8, input system image processing section 116, reader section drive system 118,
In addition, a CCD line sensor 2 as an image sensor
It consists of 6.

The printer unit 20 also includes a printer control CPU 102,
It is composed of a synchronous memory 110, a recording head 56, and a printer drive system 114.

Next, the main image processing section 106 and the input system image processing section 116
The configuration of the parts particularly characteristic of this embodiment will be explained with reference to FIG.

In FIG. 5, 121 is an input masking processing unit;
2 is a log conversion processing section, and this image processing section 121, 12
2 constitutes an input system image processing section 116.

Reference numeral 120 denotes an editing processing section that controls each processing section of the main image processing section to be described later, and 120a indicates a parameter switching flag storage area built into the editing processing section. 123 is a color conversion processing unit that performs color conversion processing of image signals; 124 is an output masking processing unit that performs masking processing; 125 is a γ correction processing unit that performs γ correction; and 126 is an edge enhancement processing unit that performs processing such as edge enhancement smoothing. 127 is a binarization processing unit that performs image binarization processing; 134 is C, M,
This is a heat extraction section that creates a black component (K) from Y data. In this embodiment, the main image processing section is configured with the above configuration.

Data is set to each image processing unit from the main CPU 100 and the league CPU 104 via the data bus 132.

Each image processing section in this embodiment has two data banks, and receives a control signal 12 from the editing processing section 121.
8 to 131 and 135 to 137, and image processing is performed according to the parameters set for the selected data bank.

The selection pattern of each data bank of each image processing section corresponds to the image processing to be performed, and is set from the main cpuioo via the data bus 120.

Next, in this embodiment, the main cpuioo, the printer control CPU 102, and the league system f! The details of the copy sequence executed by the CPU 104 will be explained with reference to the flowchart in FIG.

First, when a start key (not shown) on the operation unit 108 is pressed, the copy sequence starter program is called and the process shown in FIG. 6 is started.

First, in step S1, a copy area is set based on data set on the operation unit 108 such as the document size, main scanning direction magnification ratio, sub-scanning direction magnification ratio, paper size, etc. In the following step S2, data necessary for initial setting is transmitted to the league control CPU 104.

That is, initial communication to the league section 12 is executed.

In the copy sequence described above, the next step S
At step 3, data necessary for initial setting is sent to the printer control cputo2.

Then, in step S4, parameters are set in the data bank of each image processing section for executing image processing such as edge enhancement, smoothing, masking, and binarization, and operation instructions are set for the editing processing section 121. . Then, in step S5, calculations are performed to adjust the start times of the respective scans in order to synchronize the league section 12 and the printer section 20. As a result, from now on, each image processing section is manually controlled by the editing processing section 121.
The input information is subjected to necessary image processing and then output.

Therefore, in the next step S6, the printer waits until the initial operations such as shading correction and paper feeding by the league section 12 and the printer section 20 are completed and the scanner becomes ready for scanning. When both are in the scan ready state, the process advances from step S6 to step S7, and a start signal is transmitted based on the start time calculated in step S5. Then, in step S8, the league section 12 and the printer section 20 start the main scanning operation, and when this is confirmed, the process proceeds to step S8.
Proceed to step 9.

In this step S9, league section next scanning mode communication is performed, and then in step SIO, the process proceeds to printer section next scanning mode communication. Each of these reads data for one scan of the copy source document and prints data for one scan.

Then, in step Sll, it waits for the main scanning to be completed. When the main scanning is completed, the process proceeds to step SL2, where the sub-scanning, that is, the paper feeding operation of the recording paper is started. Thereafter, in step Si3, the process waits for the sub-scanning to be completed. When the sub-scanning is completed, the scanning for one line is completed. Therefore, in the subsequent step S14, image processing parameters for scanning the next line are set.

In step S15, it is determined whether scanning of the entire area has been completed. If the scanning of all areas has not been completed, the process returns to step S7, and if the scanning of all areas has been completed, the control operation of the copy sequence is ended.

Next, details of the image processing parameter set processing and the image processing according to the parameters in the above description will be explained using FIGS. 7 and 8.

FIG. 7 is a diagram showing the types of processing and processing areas to be performed in the image processing in this embodiment, and FIG. 8 is a diagram showing usage examples and parameters of each image processing unit in this embodiment when performing the image processing in FIG. 7. It is a figure which shows the example of a set.

In the example in FIG. 7, back a is in normal image mode, area b
is set to color conversion mode, area C is set to monochrome mode, and area d is set to photo mode. In this embodiment, different parameters from normal image processing are set in each mode during the layout shown in FIG. 7: color conversion mode; color conversion processing section 123; photo mode; log conversion section 122; and output masking processing. unit 124° monocolor mode; (1) masking processing unit 124; (2) color conversion processing unit 123 and γ correction processing unit 125. Note that in the normal image processing mode, all image processing units are used.

In the monocolor mode of this embodiment, two types of patterns using different processing units are prepared as described above.

As mentioned above, in this embodiment, an image is formed by repeating scanning for the width of the head.
Set image processing parameters at the cusp of each scan.

This is the process of steps S4 and S14 in FIG.

First, the setting of image processing parameters in each bank in the line indicated by "A" in FIG. 7 will be explained with reference to the flowchart in FIG. 9.

The image processing conditions included in the "A" line include three processing conditions (functions): normal image mode, color conversion mode, and monochrome mode.

First, in step S20, parameters for the normal image processing area a are set in each bank 1 of each image processing section. Then, in step S21, processing conditions are sequentially deciphered in the main scanning direction to determine whether there is an image processing area different from normal image processing. When the process proceeds to setting parameters for area b, the process proceeds from step S21 to step S22, where the boundary position of area b is set and the processing conditions for area b are deciphered. Then, as shown in FIG. 8, usable banks are determined based on this decoding.

In this embodiment, each image processing section has two banks, and one bank of each image processing section is occupied in normal image processing. Therefore, each image processing section can only register one type of parameter. That is, in line processing of l, only one other process can be executed.

Therefore, in the process in step S22, the same image processing section is allocated so as not to perform three types of image processing in one line. The process then proceeds to step S23, where parameters are registered in bank 2 of the image processing unit selected in step S22.

In the example of FIG. 7, parameters for the process are registered in bank 2 of the color conversion processing section 123 that is to execute the color conversion mode, as shown in FIG. Then, in the following step S24, it is checked whether registration of parameters for one line has been completed. If the process has not ended, the process advances to step S21, and if the process has ended, the process ends.

Specifically, the parameter registration process in area b is completed, the area becomes a normal image processing mode area again, and eventually becomes an area C monochrome mode area. Under the monochrome mode processing conditions, both banks of color conversion processing units 123 that are capable of performing the processing and should be selected at ■ in FIG. 8 are already in use. Therefore, it is not possible to select the color conversion processing section 123 that is capable of performing the process described in (2). Therefore, in this case, select the pattern (■) in FIG. 8, select the output masking processing section 124, and set data such as parameters for the processing in bank 2 of the output masking processing section 124 to execute this processing. do.

On the other hand, the editing processing unit 120 prepares parameter conversion coordinates for each line according to the area boundary coordinates in step S21. These parameter conversion coordinates are determined by the ON10 F of each processing unit according to the processing flow of input data.
A parameter switching flag 120a, which is a flag for controlling F and bank switching, is set.

Then, each image processing section is controlled according to this parameter switching flag.

During scanning in the Y direction, data in area b is converted to color converter 1.
23, a switching signal 130 is output so that the color conversion processing section 123 executes the color conversion mode, and bank 2 of the color conversion processing section 123 is selected. When the data of area C flows, the switching signal 13 is set so that the masking processing unit 124 can process the monochrome mode.
1 and selects bank 2 of the masking processing section 124. In areas other than the above-mentioned areas, each switching signal is controlled to select bank 1 of each image processing section.

Next, a specific example of the image processing parameter set for the "B" line shown in FIG. 7 will be described.

“B” line has normal image mode, monocolor mode,
Three photo mode functions are set. Parameters for normal images are set in bank 1 of each image processing section. The parameters in area d are the log converter 12
Bank 2 of 2 and Bank 2 of output masking processing section 124
is set to Regarding the parameters in area C, since both banks of the output masking processing unit 124 are used in this line, use the pattern ■.
Data is set in bank 2 of the color conversion processing unit 123 and the γ correction processing unit 125.

During scanning in the Y direction, the editing processing unit 121 selects bank 2 for the color conversion processing unit 123 and the γ correction processing unit 125 in area C, and selects bank 2 for the color conversion processing unit 123 and the γ correction processing unit 125 in area d.
2 and bank 2 of the output masking processing section 124 is selected. In other normal processing modes, data is set to bank l.

As described above, if multiple image processing patterns are provided for one function as in the monochrome mode described in this embodiment, and the function is selected according to the previously registered processing menu, the circuit size can be avoided without increasing the circuit size. , the degree of editing freedom can be increased.

[Other Embodiments] Next, other embodiments according to the present invention will be described using FIG. 10.

FIG. 10 shows a configuration in which the editing processing section in the first embodiment shown in FIG. 7 is omitted, and the image processing system has a simple structure in which each image processing section also has only one bank. FIG.

In this second embodiment, instead of setting a plurality of areas as in the first embodiment described above, a case will be considered in which a plurality of functions are set within one area.

First, an example will be explained in which the photo mode and monochrome mode are set.

Note that the image processing section used in each processing mode is the same as in the case of FIG. Therefore, in order to realize the photo mode, the log conversion section 122 and the output masking processing section 124 are required.
It is necessary to set different parameters for images than for normal images.

Furthermore, in order to realize the monochrome mode, two combinations of pattern (2) and pattern (2) shown in FIG. 8 can be considered. Here, if a parameter set only for pattern (2) is provided, output masking will be duplicated for two functions, and new parameters must be prepared.

However, in this embodiment, pattern (2) in which another image processing section is used to realize the monochrome mode is provided, so this pattern can be used. Therefore,
Here, parameters for monochrome mode are set for the color conversion processing section 123 and the γ correction processing section 125.

As a result, the log conversion unit 122 and the output masking processing unit 124 can realize the photo mode function, and the color conversion processing unit 123 and the γ correction processing unit 125 can realize the monocolor mode function, without having to prepare new parameters. mode is possible.

Next, consider monochrome mode when the input image is not a reflective original but a projector.

In the projector mode, the input masking processing unit 121
, the log conversion processing unit 122, and the γ correction processing unit 125 are set with parameters different from normal ones.

Therefore, in this case, the output masking processing section 124 is not used. For this reason, pattern (2) is selected for the monochrome mode, and parameters for the monochrome mode are set in the output masking processing section 124.

As explained above, in this embodiment, a plurality of image processing patterns are provided for one function, such as monochrome mode, and one of the plurality of image processing patterns is selected depending on the combination of functions. , it is possible to prevent new parameter setting processing during processing due to a combination of functions.

In the above two examples, an example was explained in which two patterns of parameters were prepared for the monochrome mode, but the present invention is not limited to the above patterns, and processing images to be processed in other modes as well. Naturally, it is possible to prepare a plurality of patterns for the processing section.

Further, the hardware configuration of the image processing section is not limited to this example, and furthermore, the arrangement order of each image processing section can be any combination. Furthermore, the present invention naturally includes enabling these image processing units to operate in parallel and combining necessary processing units in series.

Furthermore, although the above explanation has been based on image processing in a digital color copying machine, it can of course be applied to other devices having similar image processing systems.

As explained above, according to this embodiment, in an image signal processing device that has a plurality of image processing sections and is capable of combining a plurality of functions, a plurality of patterns of settings of the image processing section used for each function are prepared, By selecting the pattern according to the combination of functions, there is an effect that the degree of freedom in combination of functions can be increased without increasing the circuit scale or increasing the number of parameter patterns.

[Effects of the Invention] As explained above, according to the present invention, by preparing a plurality of patterns of settings for the image processing unit used in each function and selecting the pattern according to the combination of functions, the circuit size can be increased. This has the effect of increasing the degree of freedom in combining functions without increasing the number of parameter patterns.

[Brief explanation of the drawing]

FIG. 1 is an external view of a digital color copying machine to which an embodiment of the image signal processing device according to the present invention is applied, and FIG. 2 is a schematic diagram of the internal configuration of the embodiment shown in FIG. 1 when viewed from the side. 3 is a diagram showing the configuration around the scanning carriage of this embodiment, FIG. 4 is a block diagram of the control system section of this embodiment, and FIG. 5 is a diagram of the image processing section of this embodiment. 6 is a flowchart showing details of the copy sequence of this embodiment; FIGS. 7 and 12 are diagrams showing types of processing to be performed and examples of processing areas; FIG. 8 is a flowchart showing details of the copy sequence of this embodiment; FIG. Figure 9 is a flowchart showing an example of how each image processing unit is used in this embodiment and an example of parameter setting when image processing is performed. Figure 1O is a detailed configuration diagram of an image processing unit of another embodiment according to the present invention, Figure 11 is a diagram showing the configuration of a conventional image processing device, and Figure 13 is a diagram showing the configuration of a conventional image processing unit when performing the image processing shown in Figure 12. FIG. 3 is a diagram illustrating an example of how each image processing unit is used. In the figure, 10...digital color copying machine, 12...
Reader section, 14... Controller section, 16... Document holding plate, 18... Operation section, 20... Printer section, 2
2... Exposure lamp, 24... Lens, 26... Image sensor, 28... Original table glass, 30...
Sheet feed mechanism, 32...Paper feed cassette, 36...
Manual feed port, 38... Paper feed section cover, 40... Pick up roller, 42... Cut paper feed roller, 4
4.52...Paper feed roller, 46...Roll paper feed roller, 48...Cutter, 50...Manual feed roller, 5
4... Buffer amount detection sensor, 56... Recording head, 58... Scanning carriage, 60... Carriage.
Rail, 62... Scanning motor, 64... Paper feed roller, 66... Paper discharge tray, 68... Paper feed motor,
70... 20th paper feed clutch, 72... scanning belt, 74... platen, 76... paper detection sensor, 78... home position sensor, 100...
・Main CPU, 102...Printer control CPU, 1
04... League control CPU, 106... Main image processing unit, 108... Operation unit, 110... Synchronous memory, 114... Printer unit drive system, 116... Input system image processing unit, 118...League club drive system, 120...
- Editing processing section, 120a... Parameter switching flag storage area, 121... Input masking processing section, 122.
...Log conversion processing unit, 123...Color conversion processing unit, 12
4... Output masking processing section, 125... γ correction processing section, 126... Edge enhancement processing section, 127... 2
Value conversion processing unit, 134 . . . black extraction unit. Patent Applicant Canon Corporation Figures 1-X Figure 7 Figures 9 and 2 Figure 11 Figure 12 Figure 13

Claims (2)

[Claims] (1) An image signal processing apparatus characterized by comprising a plurality of image processing sections having different functions and a selection means for selecting a selection combination pattern of the respective image processing sections for a given image processing condition. (2) The image signal processing apparatus according to claim 1, further comprising: registration means for registering processing parameters in each of the image processing units according to the combination pattern in the selection means. Device.