JP2017136798A - Processing apparatus and method of controlling the same, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a defect from occurring in UI display in a display section regardless of an operational state.MEANS: A processing apparatus including a display section which displays a user interface includes determination means for determining an operation mode in which an image forming apparatus is operating, and control means for causing the display section to display the user interface having a data amount corresponding to the operation mode determined by the determination means, in which the data amount of the user interface displayed in the display section differs depending on the operation mode.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a processing apparatus, a control method thereof, and a program.

  Conventionally, an MFP (Multi-Function Peripheral) often has a UI display unit 601 for displaying a user interface (hereinafter referred to as UI) as shown in FIG. Using the UI display unit 601, the user can instruct various processes and obtain MFP information. For example, by displaying a photo stored in the SD card on the UI display unit 601, the user can select a photo to be printed while viewing the content in the SD card. Further, by displaying an operation screen of a device such as copying or printing on the UI display unit 601, the user can instruct the operation of the MFP using the UI display unit 601.

  By the way, when searching for a photo, there is a model that can instruct the next photo display by flicking and scrolling a touch-panel screen. The UI display in such a model often requires a large load (= bandwidth) for the main RAM in the MFP. On the other hand, image forming operations such as copying / scanning / printing, which are the main operations of the MFP, similarly use a large bandwidth of the main RAM in the MFP. As described above, when the load of UI display increases during the image forming operation, problems such as the time required for UI display occur.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses that, in an embedded device such as an MFP, a different priority is set for each type of processing for access to the main RAM.

JP 2013-131139 A

  However, the method described in Patent Document 1 cannot cope with a case where a plurality of operation units, ie, a unit that performs image forming operations and a unit that performs UI display, access the main RAM at the same time, and the UI display is defective. May occur.

  In order to solve the above problems, the present invention has the following configuration. That is, a processing apparatus having a display unit for displaying a user interface, a determination unit that determines an operation mode in which the image forming apparatus is operating, and a data amount corresponding to the operation mode determined by the determination unit Control means for displaying the user interface on the display unit, and the data amount of the user interface displayed on the display unit varies depending on the operation mode.

  According to the present invention, it is possible to control so as not to cause a problem in UI display according to the operation state of the image forming apparatus.

2 is a diagram showing an example of a block configuration of an ASIC of an MFP according to the present invention. FIG. The figure which shows the structural example of the part regarding the band allocation control of the memory control part which concerns on this invention. The figure which shows the relationship between the screen size of UI display part, and the data amount of animation display. The figure which shows the relationship between the screen size of UI display part, and the total zone | band required by UI display part. The figure which shows the processing flow which concerns on this invention. 1 is a perspective view showing an example of an image forming apparatus according to the present invention.

  Embodiments for realizing the present invention will be described below. As an MFP according to each embodiment described below, an inkjet MFP (Multi-Function Printer) will be described as an example, but the present invention is not limited to this. Note that the MFP is a processing apparatus having a print function, a scanner function, and the like. Further, the processing apparatus is not limited to the MFP, and may be another image forming apparatus such as a single function printer, or may be another processing apparatus having a UI display unit.

<First embodiment>
A first embodiment according to the present invention will be described.

[Description of configuration]
FIG. 1 shows an example of a block configuration of an MFP ASIC and peripheral devices according to an embodiment of the present invention. Connected to the ASIC 101 are a main RAM 102, a print head 140, a reading sensor 141, a counter device 142, a motor 143, switches 144, and a UI display unit 105.

  The ASIC 101 controls the entire MFP. The main RAM 102 is a RAM (Random Access Memory) that can be used by the ASIC 101. The main MPU 103 controls the entire ASIC 101. The memory control unit 104 controls access to the main RAM 102. The UI display control unit 105 controls transfer data (for example, display image data as a user interface) to the UI display unit 601 of the MFP. Thereby, the display of the UI display unit 601 is controlled. The UI rendering unit 115 generates an image to be displayed on the UI display unit 601. The motor control MPU 106 is an MPU for servo control of the MFP. The scanner image processing unit 107 performs image processing of read image data by a scanner unit including a reading sensor 141. The printer image processing unit 108 performs image processing of print image data for the printer. The compression / decompression control unit 109 performs compression / decompression of various data such as JPEG images. The printer control unit 110 controls the print head 140 of the printer unit. The scanner control unit 111 controls the reading sensor 141 of the scanner unit.

  The peripheral unit 112 includes a timer controlled by the main MPU 103, a control unit of the opposing device 142 via a UART (Universal Asynchronous Receiver Transmitter), and the like. The motor control unit 113 controls the motor 143 that drives the MFP. The port control unit 114 controls switches 144 including sensors, switches, LEDs, and the like of the MFP.

  The main MPU 103 is connected to the memory control unit 104 via the memory bus 120. The UI display control unit 105 and the UI rendering unit 115 are connected to the memory control unit 104 via the memory bus 121. As described above, the UI display unit control unit 105 and the UI rendering unit 115 each perform DMA (direct memory access) access to the memory control unit 104. The motor control MPU 106 is connected to the memory control unit 104 via the memory bus 122. Thus, the motor control MPU 106 performs DMA access to the memory control unit 104. The scanner image processing unit 107, the printer image processing unit 108, and the JPEG image compression / decompression control unit 109 are connected to the memory control unit 104 via the memory bus 123. The printer control unit 110 and the scanner control unit 111 are connected to the memory control unit 104 via the memory bus 124. As described above, the scanner image processing unit 107, the printer image processing unit 108, the JPEG image compression / decompression control unit 109, the printer control unit 110, and the scanner control unit 111 each perform DMA access to the memory control unit 104. . Further, the memory control unit 104 can access the main RAM 102.

  The ASIC 101 is provided with a register bus 130, and the main MPU 103 can access the registers in each unit in the ASIC 101 via the register bus 130.

  The bandwidth allocation control of the memory control unit 104 will be described with reference to FIG. FIG. 2 is a diagram showing details of a part related to memory bandwidth allocation of the ASIC 101 according to the present embodiment. In FIG. 2, the memory bandwidth allocation unit 201 included in the memory control unit 104 allocates bandwidth to the memory buses 120 to 124.

  The memory bandwidth allocating unit 201 according to this embodiment has a function of allocating the entire access bandwidth of the main RAM 102. Here, the entire access bandwidth is allocated with a simple integer ratio. In FIG. 2, as an easy-to-understand example, “3” for the memory bus 120, “3” for the memory bus 121, “6” for the memory bus 122, “8” for the memory bus 123, and “8” for the memory bus 124. A description will be given assuming that the bandwidth is assigned as “10”. Then, the memory bandwidth allocation unit 201 allocates a bandwidth to the memory bus to be used based on the integer ratio according to the operation mode.

…（１）
例えば、メインＲＡＭ１０２の全アクセス帯域が４００［ＭＢ／ｓ］であるとする。そして、図２のメインＭＰＵ１０３とＵＩ表示制御部１０５とＵＩレンダリング部１１５のみが動作しているとする。この場合、メモリ用バス１２０とメモリ用バス１２１に対して帯域の割り当てが必要となる。言い換えれば、この２つのバスに対して、全アクセス帯域を割り当てればよい。この状態において、ＵＩ表示制御部１０５とＵＩレンダリング部１１５が接続されたメモリ用バス１２１に割り当てられる帯域は、式（１）により、
メモリ用バス１２１の帯域＝３／（３＋３）×４００＝２００［ＭＢ／ｓ］
となる。なお、メインＭＰＵ１０３、ＵＩ表示制御部１０５、およびＵＩレンダリング部１１５のみが動作している場合とは、ＭＦＰがコピー／スキャン／プリントなどの動作モードで動いておらず、アイドル状態にある場合が相当する。なお、以下の説明において、便宜上、ＭＦＰがアイドル状態である動作モードを「第一の動作モード」とも記載し、コピー／スキャン／プリントなどの画像形成を行っている状態を「第二の動作モード」とも記載する。 In this embodiment, the bandwidth allocated to the memory bus for memory display (memory bus X) is obtained by the following equation (1).

... (1)
For example, it is assumed that the total access bandwidth of the main RAM 102 is 400 [MB / s]. Assume that only the main MPU 103, the UI display control unit 105, and the UI rendering unit 115 in FIG. 2 are operating. In this case, it is necessary to allocate bandwidth to the memory bus 120 and the memory bus 121. In other words, all access bandwidths may be allocated to these two buses. In this state, the bandwidth allocated to the memory bus 121 to which the UI display control unit 105 and the UI rendering unit 115 are connected is expressed by the following equation (1).
Bandwidth of memory bus 121 = 3 / (3 + 3) × 400 = 200 [MB / s]
It becomes. Note that the case where only the main MPU 103, the UI display control unit 105, and the UI rendering unit 115 are operating corresponds to a case where the MFP is not operating in an operation mode such as copy / scan / print and is in an idle state. To do. In the following description, for convenience, an operation mode in which the MFP is in an idle state is also referred to as a “first operation mode”, and a state in which image formation such as copying / scanning / printing is being performed is referred to as a “second operation mode”. Is also described.

Next, the case where all the blocks shown in FIG. 2 are operating will be described. In this case, it is necessary to allocate a bandwidth to the memory buses 120 to 124. In this state, the bandwidth allocated to the memory bus 121 to which the UI display control unit 105 and the UI rendering unit 115 are connected is expressed by the following equation (1).
Bandwidth of memory bus 121 = 3 / (3 + 3 + 6 + 8 + 10) × 400 = 40 [MB / s]
It becomes. Note that the case where all the blocks shown in FIG. 2 are operating corresponds to a state in which the MFP performs copying / scanning / printing or the like (during an image forming operation).

As described above, the usable memory bandwidth of the UI control unit (= UI display control unit 105 and UI rendering unit 115) is
Idle state = 200 [MB / s]
During image forming operation = 40 [MB / s]
Thus, there is a large difference in the band that can be used by the UI control unit between the idle state and the image forming operation.

  FIG. 3 shows a relationship between the size of the UI display unit 601 provided in the MFP according to the present embodiment and the memory transfer data amount [Byte] when animation is displayed on the UI display unit 601.

In FIG. 3, five modes of qVGA, wqVGA, hVGA, VGA, and wVGA are exemplified as screen sizes used in the MFP. The number of horizontal x vertical pixels is 320 × 240, 400 × 240, 480 × 320, 640 × 480, and 800 × 480. The amount of memory transfer data required when the screen size is displayed differs depending on the screen size. Also, the amount of memory transfer data required when displaying the screen size varies depending on the RGB resolution. For example, when R = 5 bits, G = 6 bits, and B = 5 bits, the total number of bytes is 2, so
Data amount of one screen [Byte] = number of horizontal pixels × number of vertical pixels × 2 [Byte]
It becomes. For example, in qVGA, the data amount of one screen is 153,600 [Bytes].

In addition, when R = 8 bits, G = 8 bits, and B = 8 bits, the total number of bytes is 3, so
Data amount of one screen [Byte] = number of horizontal pixels × number of vertical pixels × 3 [Byte]
It becomes. For example, in hVGA, the data amount of one screen is 460,800 [Bytes].

Furthermore, the amount of memory transfer data during animation is
Data amount during animation [Byte] = data amount of one screen [Byte] x frame rate [frame / second]
It is. Thus, the amount of memory transfer data required when displaying the screen size varies depending on the frame rate. The frame rate here is the number of images displayed per unit time.

  Some examples of animation will be described. For example, the amount of memory transfer data during animation in qVGA, RGB = 565 mode, 1 [frame / second] is 153,600 [Bytes]. In addition, the amount of memory transfer data at the time of animation in wqVGA, RGB = 888 mode, 10 [frame / second] is 2,880,000 [Bytes]. Further, the amount of memory transfer data at the time of animation when wVGA, RGB = 888 mode, 30 [frame / second] is 34,5650,000 [Bytes].

Here, an example of the specification of each frame rate will be further described.
1 [frame / second]: Still image 10 [frame / second]: Animation with very slow motion 30 [frame / second]: Animation capable of moving equivalent to that of a television device. In this embodiment, the animation frame rate is the above three types. However, the animation frame rate is not limited to the above, and more variations may be used, and the frame rate is a different value. Also good. Further, the frame rate to be used may be changed according to the content to be displayed, the screen size, and the like.

FIG. 4 shows the relationship between the size of the UI display unit 601 included in the MFP according to the present embodiment and the total memory transfer bandwidth [Byte / s] required by the UI control unit. In general, the total memory transfer bandwidth required by the UI control unit is the sum of the memory transfer data amount transferred from the UI display control unit 105 to the UI display unit 601 and the memory transfer data amount drawn by the UI rendering unit 115. Become. Here, the total bandwidth required by the UI control unit is obtained by the following equation (2). That is, it is assumed that the UI rendering unit 115 always performs full screen drawing without performing partial screen rewriting.
Total bandwidth required by the UI control unit [Byte / s] = data amount during animation [Byte] × 2 (2)
Note that when the screen is partially rewritten, another calculation formula may be used.

  In the present embodiment, UI control is performed based on the relationship between the animation display and the amount of transfer data, and the difference in bandwidth that can be used by the UI control unit during the idle state and during the image forming operation.

As described above, the memory bandwidth allocation unit 201 allocates the entire access bandwidth of the main RAM 102 with a simple integer ratio. In FIG. 2, the memory bus 120 is “3”, the memory bus 121 is “3”, the memory bus 122 is “6”, the memory bus 123 is “8”, and the memory bus 124 is “10”. Bandwidth is allocated. In this case, if the MFP is in an idle state,
Bandwidth of memory bus 121 = 200 [MB / s]
It becomes. Further, when the MFP is in the image forming operation, the equation (1)
Bandwidth of memory bus 121 = 40 [MB / s]
It becomes.

At this time, if the UI display unit 601 is driven in VGA, RGB = 888 mode, 30 [frame / second], the total bandwidth required by the UI control unit is 55,296,000 [Byte / s]. In this case, when compared with the bandwidth of the memory bus 121, when the MFP is in an idle state,
Bandwidth of memory bus 121 (= 200 [MB / s])> Total bandwidth required by UI control unit (= 55,296,000 [Byte / s])
It becomes. In this case, since the bandwidth is sufficiently secured, it is considered that there is no problem in displaying the UI screen. On the other hand, when the MFP is in the image forming operation,
Bandwidth of memory bus 121 (= 40 [MB / s]) <total bandwidth required by UI control unit (= 55,296,000 [Byte / s])
It becomes. In this case, it is expected that the total bandwidth required by the UI control unit cannot be secured, and a problem occurs in the display of the UI display unit 601.

  Therefore, in this embodiment, the amount of data to be transferred to the UI display unit 601 is determined according to the operation state of the MFP. In other words, the UI display mode is switched according to the operation state of the MFP. Specifically, the display control mode is determined so that the total bandwidth required by the UI control unit does not exceed the bandwidth of the memory bus 121 (memory bus for display). That is, the total bandwidth required by the UI control unit is set to be equal to or less than the bandwidth of the memory bus 121. During the image forming operation, since the bandwidth of the memory bus 121 is 200 [MB / s], for example, when the UI display unit 601 is in the VGA, RGB = 888 mode, the bandwidth is set to 10 [frame / second]. The total bandwidth required by the UI control unit at this time is 18,432,000 [Byte / s], and does not exceed the bandwidth of the memory bus 121 during the image forming operation.

  Therefore, when the MFP is in an idle state, the UI display unit 601 displays an image in VGA, RGB = 888 mode, 30 [frame / second]. On the other hand, when the MFP performs an image forming operation, the image is displayed in VGA, RGB = 888 mode, 10 [frame / second].

  In this way, the transfer data amount (UI screen data amount) is controlled in accordance with the operation mode of the MFP. That is, the data amount of the generated UI screen is controlled within a range that does not exceed the allocated bandwidth. As a result, it is possible to display an animation without causing a problem in the display of the UI display unit 601 both when the MFP is in an idle state and during an image forming operation.

  FIG. 5 shows a processing flow according to the present embodiment. This processing flow is started when the MFP is turned on and is controlled by the main MPU 103.

  In step S501, the main MPU 103 determines whether the current MFP operation state is an idle state. If the MFP is in an idle state (YES in S501), the process proceeds to S502. If the MFP is not in an idle state (NO in S501), the process proceeds to S503.

  In S502, the main MPU 103 instructs the UI display control unit 105 and the UI rendering unit 115 to operate in the first UI control mode. For convenience, UI control in the idle state is referred to as “first UI control mode”, and UI control in the image forming operation is referred to as “second UI control mode”. Here, it is assumed that the first UI control mode has a lower transfer data amount than the second UI control mode. Thereafter, the process proceeds to S504.

  In step S503, the main MPU 103 instructs the UI display control unit 105 and the UI rendering unit 115 to operate in the second UI control mode. Thereafter, the process proceeds to S504.

  Here, a case where the UI display unit 601 is driven in the VGA RGB = 888 mode will be described. Therefore, the first UI control mode = VGA, RGB = 888 mode, and 30 [frame / second] drive mode, and the second UI control mode = VGA, RGB = 888 mode, 10 [frame / second] drive mode. It becomes.

  In S504, the main MPU 103 determines whether or not the operating state has been changed. If the operating state has been changed (YES in S504), the process returns to S501 and is repeated. For example, when the MFP shifts from the idle state to the image forming operation, the current operation state of the MFP is determined again. Further, when the image forming operation is shifted to the idle state, the current operation state of the MFP is similarly determined.

  In many cases, the user flicks, scrolls, and swipes the UI display unit 601 in an idle state. Also, calling a complicated explanation screen such as help is often not during an image forming operation. Therefore, when the MFP is in an idle state, animation with a higher frame rate is often required than during an image forming operation.

  In this embodiment, as a relationship between the operation mode and the UI control mode, an animation with a high frame rate (first UI control mode) is set in an idle state, and a low frame rate animation (second UI control mode) is set during an image forming operation. It is said. That is, in this embodiment, two-stage switching control is performed using two different frame rates. Accordingly, it is possible to prevent a problem of the UI display unit during an image forming operation while maintaining a high frame rate in an idle state where animation with a high frame rate is often required. That is, it is possible to display the UI without any problem in appearance while giving priority to the DMA unit of the main operation device.

  Note that the frame rate is not limited to two stages, and may be three or more stages. For example, if the memory bus bandwidth required for each copy, scan, and print operation is different, a plurality of UI control modes corresponding to each type of image forming operation are provided in advance for copying, scanning, and printing. Also good. Thereby, finer UI control is possible.

  Furthermore, even in the same print operation, more detailed types of print operations are determined, such as during USB printing, printing from an SD card, PC scanning, and USB memory scanning, and corresponding to the detailed types. Each UI control mode may be provided. The same applies to the copy operation and the scan operation.

  Further, the UI control mode may be provided in more detail according to the configuration (combination) of the memory buses that function according to the operation mode. At this time, the display size (display control mode) is determined so that the total bandwidth required by the UI control unit does not exceed the memory bus 121 (memory bus for display). Further, in the case of having a plurality of display control modes, the total bandwidth required for the UI control unit does not exceed the memory bus 121 (memory bus for display), and the animation frame rate is higher. Choose as.

  According to the present embodiment, transfer of the UI screen beyond the total bandwidth of the main RAM is suppressed, and control can be performed so as not to cause a malfunction of the UI display unit such as a delay in display.

<Second Embodiment>
A second embodiment according to the present invention will be described. In the first embodiment, a method of changing the animation frame rate according to the operation state of the MFP is used. On the other hand, in this embodiment, when the MFP shifts from the idle state to the image forming operation, the UI display unit 601 does not perform display with a high processing load. For example, the second UI control mode is performed in the VGA, RGB = 888 mode, 1 [frame / second] drive mode (that is, still image). In this case as well, the total bandwidth required by the UI control unit is equal to or less than the bandwidth of the memory bus 121.

  Hereinafter, the configuration according to the present embodiment will be described together with specific numerical calculations. Assume that the total access bandwidth of the main RAM 102 is 400 [MB / s]. As described in the first embodiment, the bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP at this time is in an idle state is 200 [MB / s]. The bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP performs an image forming operation is 40 [MB / s].

When the MFP is in an idle state, if the UI display unit 601 is driven in VGA, RGB = 888 mode, 30 [frame / second],
Bandwidth of memory bus 121 (= 200 [MB / s])> Total bandwidth required by UI control unit (= 55,296,000 [Byte / s])
It becomes. Further, when the MFP is in an image forming operation, if the UI display unit 601 is driven in VGA, RGB = 888 mode, 1 [frame / second],
Bandwidth of memory bus 121 (= 40 [MB / s])> Total bandwidth required by UI control unit (= 1,843,200 [Byte / s])
It becomes.

  That is, when the MFP is in an idle state, the UI display unit 601 is driven with an animation with a high frame rate. On the other hand, when the MFP performs an image forming operation, the UI display unit 601 is driven with a still image. As a result, it is possible to suppress the transfer of the UI screen beyond the total bandwidth of the main RAM, and to control the malfunction of the UI display unit such as the display delay.

<Third embodiment>
A third embodiment according to the present invention will be described. In the first embodiment, a method of changing the animation frame rate according to the operation state of the MFP is used. On the other hand, in the present embodiment, the RGB resolution in the UI image is changed without changing the frame rate of the animation. That is, in the first embodiment and the second embodiment, the frame rate is different between the “first UI display mode” and the “second UI control mode”, whereas in this embodiment, the display resolution is Shall be different. At this time, it is assumed that the first UI control mode has a lower transfer data amount (lower resolution) than the second UI control mode. In this case as well, the total bandwidth required by the UI control unit is equal to or less than the bandwidth of the memory bus 121.

  Hereinafter, the configuration according to the present embodiment will be described together with specific numerical calculations. Assume that the total access bandwidth of the main RAM 102 is 400 [MB / s]. As described in the first embodiment, the bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP at this time is in an idle state is 200 [MB / s]. The bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP performs an image forming operation is 40 [MB / s].

When the MFP is in an idle state, if the UI display unit 601 is driven in VGA, RGB = 888 mode, 30 [frame / second],
Bandwidth of memory bus 121 (= 200 [MB / s])> Total bandwidth required by UI control unit (= 55,296,000 [Byte / s])
It becomes. When the MFP is in an image forming operation, the UI display unit 601 is driven in VGA, RGB = 565 mode, 30 [frame / second].
Bandwidth of memory bus 121 (= 40 [MB / s])> Total bandwidth required by UI control unit (= 36,864,000 [Byte / s])
It becomes.

  That is, when the MFP is in an idle state, the UI display unit 601 is driven with the RGB resolution set to a high value. On the other hand, when the MFP performs an image forming operation, the UI display unit 601 is driven with the RGB resolution set to a low value. As a result, it is possible to suppress the transfer of the UI screen beyond the total bandwidth of the main RAM, and to control the malfunction of the UI display unit such as the display delay.

<Fourth embodiment>
A fourth embodiment according to the present invention will be described. In the present embodiment, similarly to the third embodiment, control is performed so that the UI display unit 601 does not malfunction without changing the frame rate of the animation. In the third embodiment, this is realized by changing the resolution of RGB. On the other hand, in this embodiment, the display size of the UI display unit 601 is changed. Specifically, in this embodiment, it is assumed that the UI screen can be generated and displayed in any one of the five screen sizes described in the first embodiment.

  Hereinafter, the configuration according to the present embodiment will be described together with specific numerical calculations. Assume that the total access bandwidth of the main RAM 102 is 400 [MB / s]. As described in the first embodiment, the bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP at this time is in an idle state is 200 [MB / s]. The bandwidth of the memory bus 121 that can be used by the UI display unit 601 when the MFP performs an image forming operation is 40 [MB / s].

Furthermore, when the MFP is in an idle state, if the UI display unit 601 is driven in VGA, RGB = 888 mode, 30 [frame / second],
Bandwidth of memory bus 121 (= 200 [MB / s])> Total bandwidth required by UI control unit (= 55,296,000 [Byte / s])
It becomes. Further, when the MFP is in the image forming operation, the UI display unit 601 is driven in hVGA, RGB = 888 mode, 30 [frame / second].
Bandwidth of memory bus 121 (= 40 [MB / s])> Total bandwidth required by UI control unit (= 27,648,000 [Byte / s])
It becomes.

  That is, when the MFP is in an idle state, the UI display unit 601 is driven with a larger screen size. On the other hand, during the image forming operation of the MFP, the UI display unit 601 is driven with a screen size smaller than that in the idle state. As a result, it is possible to suppress the transfer of the UI screen beyond the total bandwidth of the main RAM, and to control the malfunction of the UI display unit such as the display delay.

  The screen size of the UI screen is not limited to the size shown in FIG. 3 and the like, and may be selected from more types. Specifically, the display size (display control mode) is determined so that the total bandwidth required by the UI control unit does not exceed the memory bus 121 (memory bus for display). Further, in the case of having a plurality of display control modes, the total bandwidth required for the UI control unit does not exceed the memory bus 121 (memory bus for display), and the animation frame rate is higher. Choose as.

<Other embodiments>
The present invention is not limited to the configuration described above. For example, two or more of the frame rate, resolution, and resolution may be controlled. At this time, the display size (display control mode) may be determined so that the total bandwidth required by the UI control unit does not exceed the memory bus 121 (memory bus for display).

  The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

DESCRIPTION OF SYMBOLS 101 ... ASIC, 102 ... Main RAM, 103 ... MPU, 104 ... Memory control part, 105 ... UI display control part, 115 ... UI rendering part, 120-124 ... Memory bus, 601 ... UI display part

Claims (10)

An image forming apparatus having a display unit for displaying a user interface,
Determination means for determining an operation mode in which the image forming apparatus is operating;
Control means for causing the display unit to display a user interface having a data amount corresponding to the operation mode determined by the determination means;
Have
The processing apparatus according to claim 1, wherein a data amount of a user interface displayed on the display unit varies depending on an operation mode. According to the operation mode determined by the determination unit, the control unit further includes an allocation unit that allocates a bandwidth for accessing the memory.
The processing apparatus according to claim 1, wherein the control unit controls a data amount of a user interface so as not to exceed a bandwidth allocated by the allocation unit. The operation mode determined by the determination means includes a first operation mode and a second operation mode having a higher processing load than the first operation mode,
The data amount of the user interface displayed on the display unit by the control unit is determined as the first data amount when the operation mode determined by the determination unit is the first operation mode, and is determined by the determination unit. 3. The processing apparatus according to claim 1, wherein when the second operation mode is a second operation mode, the second data amount is smaller than the first data amount. In the first operation mode, the image forming apparatus is in an idle state,
The processing apparatus according to claim 3, wherein the second operation mode is a state in which the image forming apparatus is performing an image forming operation. The user interface displayed by the display unit is an animation,
When the determination unit determines that the second operation mode is set, the control unit displays the animation at a lower frame rate than when the determination unit determines that the first operation mode is set. The processing apparatus according to claim 3, wherein the processing apparatus is displayed. The control means includes
If the determination means determines that the first operation mode, the animation user interface is displayed on the display unit,
5. The processing apparatus according to claim 3, wherein when the determination unit determines that the second operation mode is set, a still image user interface is displayed on the display unit. 6.   When the determination unit determines that the second operation mode is set, the control unit displays the user interface at a lower resolution than when the determination unit determines that the first operation mode is set. The processing apparatus according to claim 3, wherein the processing apparatus is displayed.   When the determination unit determines that the second operation mode is set, the control unit displays a user interface having a screen size larger than that when the determination unit determines the first operation mode. The processing apparatus according to claim 3, wherein the processing apparatus is displayed. A control method for an image forming apparatus having a display unit for displaying a user interface,
A determination step of determining an operation mode in which the image forming apparatus is operating;
A control step of causing the display unit to display a user interface having a data amount corresponding to the operation mode determined in the determination step,
A method for controlling a processing apparatus, wherein the amount of data of a user interface displayed on the display unit varies depending on an operation mode. Computer
Determination means for determining an operation mode in which the computer is operating;
Function as a control means for causing a display unit to display a user interface having a data amount corresponding to the operation mode determined by the determination means;
The program according to claim 1, wherein the data amount of the user interface displayed on the display unit varies depending on the operation mode.

Images