JP2009077301A - Image processor and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processor for reducing power consumption during an energy saving mode operation, and to provide its control method. <P>SOLUTION: An image processor 1 is configured of a scanner 2; an SoC (System On a Chip) 3 as a main control part; an image processing chip 4 as an image processing part; an I/O (Input/Output) chip 5; a print engine 6; and a system bus 7. The SoC 3 is configured as a main control part for controlling at least part of the image processor 1 to perform image processing to the received image data. In the energy saving mode operation, the main control part executes image processing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image processing apparatus and a control method thereof.

  Conventionally, image processing apparatuses such as printers, scanners, facsimile machines, and digital multi-function peripherals have been required to reduce power consumption, and in particular, have been demanded to reduce power consumption during standby without operation or job execution. Therefore, conventionally, an energy saving mode for stopping power supply to a portion with high power consumption such as an image processing unit is provided, and power consumption is reduced by shifting to this energy saving mode during standby.

  For example, in Patent Document 1, a power return signal is output to a CPU (Central Processing Unit) which is a main control unit by using, as a trigger signal, that the operation display unit is operated during an energy saving mode operation. A technique for supplying power to a power supply unit is disclosed. This energizes the CPU that is the main control unit in response to the power return signal, and supplies power to the necessary part based on the trigger signal.

JP 2006-135878 A

  However, it is difficult to sufficiently reduce the power consumption during the energy-saving mode operation, which has become increasingly severe in recent years, with the conventional technology in which the main control unit is energized and the power is supplied to the necessary portions. Particularly in the image processing apparatus, not only the main control unit but also the image processing unit is energized at the time of image processing, so that it is difficult to sufficiently reduce power consumption during the energy saving mode operation.

  An object of the present invention is to solve the conventional problems and to provide an image processing apparatus that consumes less power during an energy saving mode operation and a control method therefor.

The present invention controls at least a part of an image processing apparatus and can perform image processing;
And at least one image processing unit that performs image processing,
In the energy saving mode operation, the main control unit performs image processing.

  In the present invention, the image processing unit is in a non-energized state during the energy saving mode operation.

  According to the present invention, the image processing unit is in a standby state during the energy saving mode operation.

In the present invention, the main control unit and the image processing unit are PCI (Peripheral Component).
Interconnect) bus, PCI Express bus, or dedicated bus.

  According to another aspect of the present invention, there is provided a control method for an image processing apparatus, wherein the main control unit performs control so as to perform image processing during the energy saving mode operation.

The present invention also includes a main control unit that controls at least a part of the image processing apparatus;
At least one image processing unit for performing image processing;
GPU (Graphic Processing Unit) that performs image processing for image display
In the energy saving mode operation, the image processing apparatus is characterized in that the GPU performs image processing.

  In the present invention, the image processing unit is in a non-energized state during the energy saving mode operation.

  According to the present invention, the image processing unit is in a standby state during the energy saving mode operation.

  In the present invention, the main control unit and the image processing unit are connected by a PCI bus, a PCI Express bus, or a dedicated bus.

  According to another aspect of the present invention, there is provided a control method for an image processing apparatus, wherein the GPU performs control so as to perform image processing during the energy saving mode operation.

The present invention also includes a main control unit that controls at least a part of the image processing apparatus and can perform image processing;
At least one image processing unit for performing image processing;
A GPU for performing image processing for image display,
In the energy saving mode operation, the image processing apparatus is characterized in that the main control unit and the GPU perform image processing.

  In the present invention, the image processing unit is in a non-energized state during the energy saving mode operation.

  According to the present invention, the image processing unit is in a standby state during the energy saving mode operation.

  In the present invention, the main control unit and the image processing unit are connected by a PCI bus, a PCI Express bus, or a dedicated bus.

  According to another aspect of the present invention, there is provided a control method for an image processing apparatus, wherein the main control unit and the GPU are controlled to perform image processing during the energy saving mode operation.

  According to the present invention, an image processing apparatus includes a main control unit that controls at least a part of the image processing apparatus and can perform image processing, and at least one image processing unit that performs image processing, and operates in an energy saving mode. Sometimes, the main control unit performs image processing.

  When the main control unit has an advanced calculation function, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the main control unit performs image processing without activating the image processing unit, thereby reducing power consumption.

  According to the invention, it is preferable that the image processing unit is in a non-energized state during the energy saving mode operation. Since the main control unit performs image processing without energizing the image processing unit, power consumption can be reduced.

  According to the invention, it is preferable that the image processing unit is in a standby state (a state in which it can be restored at any time by an instruction from the main control unit) during the energy saving mode operation. Since the main control unit performs image processing without returning the image processing unit, power consumption can be reduced.

According to the present invention, the main control unit and the image processing unit are PCI (Peripheral Component).
Interconnect) bus, PCI Express bus or dedicated bus.

  When connecting with a PCI bus or a PCI Express bus, by using a device that conforms to the standard, it is possible to flexibly expand the increase / decrease in devices as the main control unit and the image processing unit. In addition, high-speed data transfer performance can be obtained. Furthermore, it is a great advantage that the return sequence from the standby state is defined as a standard.

  When connecting with a dedicated bus, it is possible to obtain a function equivalent to that of a general-purpose bus by predetermining the same function as the above as an image processing apparatus.

  According to the invention, in the control method of the image processing apparatus, the main control unit performs control so as to perform image processing during the energy saving mode operation.

  When the main control unit has an advanced calculation function, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the main control unit performs image processing without activating the image processing unit, thereby reducing power consumption.

  According to the invention, the image processing device includes a main control unit that controls at least a part of the image processing device, at least one image processing unit that performs image processing, and a GPU ( Graphic Processing Unit), and the GPU performs image processing during the energy saving mode operation.

  When a GPU that performs image processing for image display is provided, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the GPU performs image processing without activating the image processing unit, thereby reducing power consumption.

  According to the invention, it is preferable that the image processing unit is in a non-energized state during the energy saving mode operation. Since the main control unit performs image processing without energizing the image processing unit, power consumption can be reduced.

  According to the invention, it is preferable that the image processing unit is in a standby state (a state in which it can be restored at any time by an instruction from the main control unit) during the energy saving mode operation. Since the main control unit performs image processing without returning the image processing unit, power consumption can be reduced.

  According to the invention, it is preferable that the main control unit and the image processing unit are connected by a PCI bus, a PCI Express bus, or a dedicated bus.

  When connecting with a PCI bus or a PCI Express bus, by using a device that conforms to the standard, it is possible to flexibly expand the increase / decrease in devices as the main control unit and the image processing unit. In addition, high-speed data transfer performance can be obtained. Furthermore, it is a great advantage that the return sequence from the standby state is defined as a standard.

  When connecting with a dedicated bus, it is possible to obtain a function equivalent to that of a general-purpose bus by predetermining the same function as the above as an image processing apparatus.

  According to the present invention, in the control method of the image processing apparatus, the GPU performs control so as to perform image processing during the energy saving mode operation.

  When a GPU that performs image processing for image display is provided, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the GPU performs image processing without activating the image processing unit, thereby reducing power consumption.

  According to the invention, the image processing device controls at least a part of the image processing device and can perform image processing, at least one image processing unit that performs image processing, and an image display image. A GPU that performs processing, and the main control unit and the GPU perform image processing during the energy saving mode operation.

  When a GPU that performs image processing for image display is provided and the main control unit has an advanced calculation function, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the GPU and the main control unit perform image processing without activating the image processing unit, so that power consumption can be reduced.

  According to the invention, it is preferable that the image processing unit is in a non-energized state during the energy saving mode operation. Since the main control unit performs image processing without energizing the image processing unit, power consumption can be reduced.

  According to the invention, it is preferable that the image processing unit is in a standby state (a state in which it can be restored at any time by an instruction from the main control unit) during the energy saving mode operation. Since the main control unit performs image processing without returning the image processing unit, power consumption can be reduced.

  According to the invention, it is preferable that the main control unit and the image processing unit are connected by a PCI bus, a PCI Express bus, or a dedicated bus.

  When connecting with a PCI bus or a PCI Express bus, by using a device that conforms to the standard, it is possible to flexibly expand the increase / decrease in devices as the main control unit and the image processing unit. In addition, high-speed data transfer performance can be obtained. Furthermore, it is a great advantage that the return sequence from the standby state is defined as a standard.

  When connecting with a dedicated bus, it is possible to obtain a function equivalent to that of a general-purpose bus by predetermining the same function as the above as an image processing apparatus.

  According to the present invention, in the control method of the image processing apparatus, the main control unit and the GPU are controlled to perform image processing during the energy saving mode operation.

  When a GPU that performs image processing for image display is provided and the main control unit has an advanced calculation function, the same image processing as that of the image processing unit can be performed by creating a firmware program. During the energy saving mode operation, the GPU and the main control unit perform image processing without activating the image processing unit, so that power consumption can be reduced.

  FIG. 1 is a block diagram showing a configuration of an image processing apparatus 1 according to the present invention. The image processing apparatus 1 includes an SoC (System On a Chip) 3 that is a main control unit, an image processing chip 4 that is an image processing unit, an I / O (Input / Output) chip 5, a print engine 6, and a system. It consists of bus 7.

  The scanner 2 is connected to the image processing apparatus 1 and performs reading of a document image and image processing such as shading and light amount correction.

  The SoC 3 is a main control unit that controls at least a part of the image processing apparatus 1, and can process the received image data and store it in the main memory 8 that is controlled by the SoC 3.

The image processing chip 4 is a scanner or an external personal computer (hereinafter referred to as “PC (
Image processing received from the “personal computer”), and includes an input tone correction unit, a region separation processing unit, a color correction unit, a black generation and under color removal unit, and a spatial filter processing unit. , An output tone correction unit, a color / monochrome conversion unit, an image compression process, an image decompression process, and a rotation processing unit. As the image processing chip 4, a dedicated ASIC (Application Specific Integrated Circuit) developed exclusively for image processing or a general-purpose IC (Integrated Circuit) having an image processing function is generally used. The image processing chip 4 can store the received image data in the image memory 9 controlled by the image processing chip 4 according to an instruction from the SoC 3 serving as the main control unit, and can perform image processing.

The I / O chip 5 interfaces with an external device. For example, an LCDC (Liquid Crystal Display) is used to display a user interface.
It is configured to include a GPU (Graphics Processing Unit) 23 having a controller function, and performs calculation processing necessary for displaying 3D graphics. It also has an HDD (Hard disk drive) controller and NIC (Network Interface Card). The I / O chip 5 stores the received image data in the LCDC memory 10 or HDD 11 controlled by itself.

  The I / O chip 5 can also transmit and receive data to and from an external device via a LAN (Local Area Network) 12. The I / O chip 5 generally has not only the LAN 12 but also several types of external interfaces such as a facsimile machine and a USB (Universal Serial Bus), and realizes not only a copying operation but also a printing operation and a facsimile operation. It becomes possible.

The print engine 6 receives the data after image processing and executes print processing.
The system bus 7 is configured by a general-purpose system bus such as PCI (Peripheral Component Interconnect), PCI-Express, or a dedicated bus, and is used for internal transmission and reception of control data and image data.

  When connecting with a PCI bus or a PCI Express bus, it is possible to flexibly expand the increase / decrease in the number of devices as the SoC 3 and the image processing chip 4 by using a bus that conforms to the standard. In addition, high-speed data transfer performance can be obtained. Furthermore, it is a great advantage that the return sequence from the standby state is defined as a standard.

  When connecting with a dedicated bus, it is possible to obtain a function equivalent to that of a general-purpose bus by predetermining the same function as the above as an image processing apparatus.

  FIG. 2 is a block diagram showing the configuration of the I / O chip 5. The I / O chip 5 includes a system bus I / F (Interface) 21, a SoCI / F 22, a GPU 23, an HDD I / F 24, and a network I / F 25.

  The system bus I / F 21 is a block that controls transmission and reception of image data and the like with each IC.

  The SoC / F 22 is a block that controls the operation of the I / O chip 5 by performing communication with the SoC 3. It is configured to include a local bus I / F (not shown), is connected to the local bus 26 directly connected to the SoC 3, and controls the I / O chip 5 in accordance with an instruction from the SoC 3.

  The GPU (LCDC) 23 performs liquid crystal display display and image processing of image data for display. A memory control function for providing the LCDC memory 10 is also included.

  The HDD I / F 24 has an HDD controller function and an interface function.

  The network I / F 25 transmits / receives data to / from an external device via the LAN 12.

  It may be composed of a plurality of ICs, for example, when a plurality of image processing chips 4 having different system configurations and performing different processes are mounted, or when the I / O chip 5 function is divided to make the GPU function independent. Conceivable.

  FIG. 3 is a diagram showing the flow of image data during the normal mode operation, superimposed on the block diagram of FIG. Taking the copy operation of the image processing apparatus 1 as an example, image processing during normal mode operation will be described. The image processing apparatus 1 can be set to a normal mode or an energy saving mode.

  When a copy button provided in the user interface is pressed by a user operation, the scanner 2 reads a document placed on the document table, converts the analog image data to digital image data, and then passes the image data to the image processing chip 4 via the system bus 7. The image data is transferred (path 31).

  The image processing chip 4 stores the image data received from the scanner 2 in the image memory 9 controlled by the image processing chip 4 in accordance with an instruction from the SoC 3. The image data stored in the image memory 9 is processed in advance by the image processing chip 4 after image processing instructed by the SoC 3, and after completion of the image processing, the system bus is connected to an HDD controller (not shown) in the I / O chip 5. 7 (route 32).

  The I / O chip 5 stores the image data received from the image processing chip 4 via the system bus 7 in the HDD 11 and transfers the received image data to the print engine 6 for printing out (path 33). The print engine 6 receives image data from the I / O chip 5 and executes a printing operation on a recording medium. At this time, the SoC 3 controls the I / O chip 5 and the print engine 6.

  Next, image processing during the energy saving mode operation of the image processing apparatus 1 will be described. The image processing during the normal mode operation described above is assumed to be performed by the image processing chip 4 having a dedicated image processing ASIC or an image processing IC, and by performing hardware processing dedicated to image processing. High-speed processing is possible. However, depending on the user's usage, high-speed operation is not always required. For example, during the energy saving mode operation, it is required to operate the image processing apparatus 1 with low power consumption even in the low-speed operation.

  Hereinafter, first to third embodiments of image processing during the energy saving mode operation will be described (see FIGS. 4 to 6).

  FIG. 4 is a diagram showing the flow of image data in the first embodiment, superimposed on the block diagram of FIG. The user can select the energy saving mode at any time, and when the user wants to shift to the energy saving mode, it can be set by an operation from the user interface. A copy operation performed by the SoC 3 while performing both image processing and system control during the energy saving mode operation will be exemplified below.

  When a copy button provided in the user interface is pressed by a user operation, the scanner 2 reads the document placed on the document table, converts the analog image data to digital image data, and then transfers the image data to the SoC 3 via the system bus 7. Transfer (path 34).

  The SoC 3 stores the image data received from the scanner 2 in the main memory 8 controlled by itself. The image data stored in the main memory 8 is transferred via the system bus 7 to the HDD controller in the I / O chip 5 after completion of the image processing after the SoC 3 performs preset image processing (path 35). ).

  The I / O chip 5 stores the image data received from the image processing chip 4 via the system bus 7 in the HDD 11 and transfers the received image data to the print engine 6 for printing out (path 36). The print engine 6 receives image data from the I / O chip 5 and executes a printing operation on a recording medium.

  As represented by SoC3, in recent years, CPUs have been improved in high-speed frequency operation and high functionality, and can be selected from those having very wide performance. When a high-speed and high-function SoC 3 is used, advanced image processing can be realized by creating a firmware program. By executing image processing with such a high-function SoC 3, the same image processing is performed without operating the image processing chip 4, and the image processing chip 4 is stopped, which is a low power consumption operation mode. Realize the mode.

  As the energy saving mode, the image processing chip 4 is in a non-energized mode in which power is not completely supplied, and in a standby mode in which power is applied so that the image processing chip 4 can be restored immediately in response to an instruction from the SoC 3, but no processing is performed. Two types are defined. Specifically, in the non-energization mode, both power down and clock stop are performed. During the standby mode operation, the power is supplied and the clock is supplied partially or supplied to all the blocks, so that the restarting speed is increased as compared with the case where no power is supplied.

  However, even when image processing is performed by SoC 3, since control of the entire image processing apparatus 1 needs to be performed by SoC 3, SoC 3 needs to perform both image processing and system control. Therefore, the processing speed may be lower than when the image processing chip 4 is used, and at that time, it is necessary to decrease the reading speed of the scanner 2 and the printing speed of the print engine 6 accordingly.

  FIG. 5 is a diagram showing the flow of image data in the second embodiment superimposed on the block diagram of FIG. The user can select the energy saving mode at any time, and when the user wants to shift to the energy saving mode, it can be set by an operation from the user interface. A copy operation that the GPU 23 performs both image processing and graphics image processing during the energy saving mode operation will be described below.

  When a copy button provided in the user interface is pressed by a user operation, the scanner 2 reads the document placed on the document table, converts it from analog image data to digital image data, and then passes through the system bus 7 to the I / O chip 5. The image data is transferred to the internal GPU 23 (path 37).

  The GPU 23 stores the image data received from the scanner 2 in the LCDC memory 10 that it controls. At this time, since it is necessary for the LCDC memory 10 to store both the image data of the scanner image data and the graphics image data, the address area to be stored is divided into two to enable parallel processing. The image data stored in the LCDC memory 10 is subjected to image processing set in advance by the SoC 3 by the GPU 23 and then to the HDD controller in the I / O chip 5 via the I / O chip 5 internal bus after the image processing is completed. Is transferred (path 38).

  The HDD controller stores the image data received from the image processing chip 4 via the system bus 7 in the HDD 11 and transfers the received image data to the print engine 6 for printing out (path 39). The print engine 6 receives image data from the I / O chip 5 and executes a printing operation on a recording medium.

  Like the high-function SoC, the GPU 23 that realizes image processing for graphics has been advanced in high-speed operation and high-function, and can be selected from those having a very wide range of performance. The high-speed and high-performance GPU 23 can realize advanced image processing by creating a firmware program. By executing image processing with such a high-performance GPU 23, the same image processing is performed without operating the image processing chip 4, and the image processing chip 4 is stopped to realize the energy saving mode.

  In the energy saving mode, the image processing chip 4 is in a non-energized mode in which power is not completely supplied, and in a standby mode in which power is applied so that the image processing chip 4 can be immediately restored in response to an instruction from the SoC 3, but no processing is performed. Two types are defined.

  However, even when image processing is performed by the GPU 23, display on the LCD as a user interface and graphics processing of an image to be displayed need to be performed as usual. Therefore, the processing speed may be lower than when the image processing chip 4 is used, and at that time, it is necessary to decrease the reading speed of the scanner 2 and the printing speed of the print engine 6 accordingly.

  The above has described the method of performing image processing with either the SoC 3 or the GPU 23. When the dedicated image processing chip 4 is not used, it cannot be denied that the performance is inferior as described above. Therefore, it is conceivable to perform image processing using both the SoC 3 and the GPU 23 in order to improve the performance as much as possible.

  FIG. 6 is a diagram showing the flow of image data in the third embodiment superimposed on the block diagram of FIG. When a copy button provided in the user interface is pressed by a user operation, the scanner 2 reads the document placed on the document table, converts the analog image data to digital image data, and then transfers the image data to the SoC 3 via the system bus 7. Transfer (route 41).

  The SoC 3 stores the image data received from the scanner 2 in the main memory 8 controlled by itself. The image data stored in the main memory 8 is transferred via the system bus 7 to the HDD controller in the I / O chip 5 after completion of the image processing after the SoC 3 performs preset image processing (path 42). ).

  The GPU 23 in the I / O chip 5 stores the image data received from the SoC 3 in the LCDC memory 10 that it controls. At this time, since the LCDC memory 10 needs to store both the image data of the scanner image data and the graphics image data, the storage address area is divided into two to enable parallel processing. The image data stored in the LCDC memory 10 is transferred to the HDD controller in the I / O chip 5 via the I / O chip 5 internal bus after the image processing is completed after the GPU 23 performs preset image processing. (Path 43).

  The HDD controller stores the image data received from the image processing chip 4 via the I / O chip 5 internal bus in the HDD 11 and transfers the received image data to the print engine 6 for printing out (path 44). The print engine 6 receives image data from the I / O chip 5 via the system bus 7 and executes a printing operation on a recording medium.

  It is desirable to select an efficient processing method in order to improve the performance of image processing performed by each of the SoC 3 and the GPU 23. Therefore, either the SoC 3 or the GPU 23 may perform the image processing first, and the image data may be reciprocated several times, such as the SoC 3, the GPU 23, the SoC 3, or the GPU 23, the SoC 3, the GPU 23, or the like.

  FIG. 7 is a flowchart illustrating an image processing method according to the present invention. As an example, a flow in a case where image processing is executed by both the SoC 3 and the GPU 23 (third embodiment shown in FIG. 6) is shown.

  Step S1 represents the start of a scanner job (copy job) or print job, and can be started via a network such as a PC, or can be started from a user interface. In either case, the job is started when the SoC 3 recognizes the job.

  In step S2, the SoC 3 checks whether or not the current system state is set to the energy saving mode. If the energy saving mode operation is being performed, the process proceeds to step S3, and if the normal mode operation is being performed, the process proceeds to step S7.

In step S3, the SoC 3 instructs the internal function of the SoC 3 to perform image processing.
In step S4, the SoC 3 instructs the GPU 23 to perform image processing.

  In step S5, an image processing completion notification from the GPU 23 is awaited. When an image processing completion notification is detected, the process proceeds to step S6. Since the GPU 23 performs the image processing after the SoC 3 performs the image processing, the image processing completion notification from the GPU 23 is made later in time than the image processing completion notification from the SoC 3. Therefore, when the image processing completion notification from the GPU 23 is detected, the image processing by the SoC 3 is also finished.

  In step S6, the print engine 6 is controlled, the print job is completed, and the series of jobs is completed. If the job is to transfer scanned image data to a PC, data transfer is performed via the LAN 12.

  In step S7, since the normal mode operation is being performed instead of the energy saving mode, the SoC 3 instructs the image processing chip 4 to perform image processing.

  In step S8, an image processing completion notification from the image processing chip 4 is awaited. After detecting the image processing completion notification, the process proceeds to step S6, where the print job is completed and the series of jobs is completed.

1 is a block diagram showing a configuration of an image processing apparatus 1 according to the present invention. 2 is a block diagram showing a configuration of an I / O chip 5. FIG. It is a figure which shows the flow of the image data during normal mode operation on the block diagram of FIG. It is a figure which shows the flow of the image data in 1st Embodiment superimposed on the block diagram of FIG. It is a figure which shows the flow of the image data in 2nd Embodiment on the block diagram of FIG. It is a figure which shows the flow of the image data in 3rd Embodiment superimposed on the block diagram of FIG. It is a flowchart explaining the image processing method which concerns on this invention.

Explanation of symbols

1 Image processing device 2 Scanner 3 SoC
4 Image processing chip 5 I / O chip 6 Print engine 7 System bus 8 Main memory 9 Image memory 10 LCDC memory 11 HDD
12 LAN
21 System bus I / F
22 SoCI / F
23 GPU
24 HDD I / F
25 Network I / F
26 Local Bus 31-39, 41-44 Route

Claims (15)

A main control unit that controls at least a part of the image processing apparatus and can perform image processing;
And at least one image processing unit that performs image processing,
An image processing apparatus in which a main control unit performs image processing during an energy saving mode operation.   The image processing apparatus according to claim 1, wherein the image processing unit is in a non-energized state during the energy saving mode operation.   The image processing apparatus according to claim 1, wherein the image processing unit is in a standby state during the energy saving mode operation.   The image processing apparatus according to claim 1, wherein the main control unit and the image processing unit are connected by a PCI (Peripheral Component Interconnect) bus, a PCI Express bus, or a dedicated bus.   A control method for an image processing apparatus, wherein the main control unit performs control so as to perform image processing during an energy saving mode operation. A main control unit that controls at least a part of the image processing apparatus;
At least one image processing unit for performing image processing;
GPU (Graphic Processing Unit) that performs image processing for image display
An image processing apparatus in which a GPU performs image processing during an energy saving mode operation.   The image processing apparatus according to claim 6, wherein the image processing unit is in a non-energized state during the energy saving mode operation.   The image processing apparatus according to claim 6, wherein the image processing unit is in a standby state during the energy saving mode operation.   The image processing apparatus according to claim 6, wherein the main control unit, the image processing unit, and the GPU are connected by a PCI bus, a PCI Express bus, or a dedicated bus.   A control method for an image processing apparatus, wherein a control is performed so that a GPU performs image processing during an energy saving mode operation. A main control unit that controls at least a part of the image processing apparatus and can perform image processing;
At least one image processing unit for performing image processing;
A GPU for performing image processing for image display,
An image processing apparatus, wherein the main control unit and the GPU perform image processing during the energy saving mode operation.   The image processing apparatus according to claim 11, wherein the image processing unit is in a non-energized state during the energy saving mode operation.   The image processing apparatus according to claim 11, wherein the image processing unit is in a standby state during the energy saving mode operation.   The image processing apparatus according to claim 11, wherein the main control unit, the image processing unit, and the GPU are connected by a PCI bus, a PCI Express bus, or a dedicated bus.   A control method for an image processing apparatus, wherein the main control unit and the GPU are controlled to perform image processing during the energy saving mode operation.

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