JP2007267255A - Image processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing apparatus capable of suppressing the power consumption more than before by supplying power to necessity minimum apparatuses depending on contents of a request received from an external device through a communication means during a power-saving state. <P>SOLUTION: Upon the receipt of an apparatus information processing request (a request of requesting the image processing apparatus to apply prescribed processing to apparatus information) from the external device through a NIC 5 during a sleep mode, an MPU of the NIC 5 and an MPU of each of control sections 6 to 9 discriminate the control sections 6 to 9 (function blocks) required for executing the processing corresponding to the received apparatus information processing request (setting and transmission of apparatus information), automatically switch only the control sections discriminated required into "power application state" by controlling automatic changeover switches 41 to 49 and after the processing in response to the request is executed, the MPUs switch the control sections into original "power interruption state" again. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image processing apparatus including a communication unit that communicates with an external apparatus, and more particularly to an image processing apparatus suitable for power saving.

  In general, an image processing apparatus such as a printer, a scanner, a facsimile machine, a copying machine, or a multifunction machine having these functions is an external device (computer or other image processing apparatus) via a communication medium such as a network or a telephone line. The communication means (NIC (Network Interface Card), modem (Modulator-Demodulator), etc.) which communicates with is provided. In addition, such an image processing device has a normal operation state when an operation on an operation input unit included in the image processing device and a state in which no data is received from an external device through the communication unit continue for a certain time or more. Some have a function (hereinafter referred to as a sleep function) for shifting to a power saving state (generally referred to as a sleep mode) with low power consumption. In the power saving state, for example, energization (power supply) to devices such as a fixing device including a heater and a control circuit is cut off, while the communication unit is maintained in an energized state. There are many. The reason for this is to automatically resume energization of devices that are in a non-energized state in response to a request from an external device and automatically return to a normal operating state when the device is in a power saving state. is there. For example, in Patent Document 1, when a print request is received by an energized communication unit in a power saving state, the entire apparatus is energized and an image is formed in accordance with the received print request. A forming device is shown.

Here, the request from the external device includes a print request for requesting image formation on a recording sheet, an image scan request for reading an image formed on a document, a hard disk provided in the image processing device, and the like. In addition to a data processing request such as a request to perform processing (hereinafter referred to as data filing processing) for operating a data file by accessing a storage means, predetermined processing is performed on device information that is information on a device included in the image processing apparatus. Request (hereinafter referred to as a device information processing request). The device information processing request includes a request for transmitting device information to an external device and a request for setting device information for a corresponding device.
On the other hand, in Patent Document 2, when an access request for a hard disk is received from an external device via a network by the energized controller in the power saving state, energization to the hard disk is started and requested. An image processing apparatus that performs processing is shown.
Further, in Patent Document 3, when a print request is received through the external interface in a power saving state where power is supplied to the sub CPU and the external interface by the sub power source, the sub CPU controls the main CPU that controls the entire apparatus. A multi-function machine that prints by supplying power is shown.
JP-A-8-101606 JP 2005-186425 A JP 2003-63101 A

However, when the device itself is in the power saving state, just because some processing is requested from the external device through the communication means, energization is started to many devices that are not energized in response to the request. However, there was a problem that sufficient power saving could not be achieved by executing the process.
In particular, in a multi-function device that has many devices that support a wide range of functions and is shared by many users, there are many types of requests received from external devices through communication means. The degree of urgency can vary. For this reason, in order to further save power, it is important to energize the minimum necessary devices at an appropriate timing in accordance with the content of the request received when in the power saving state.
Accordingly, the present invention has been made in view of the above circumstances, and the object of the present invention is to minimize the necessary amount according to the content of the request received from the external device through the communication means when in the power saving state. An object of the present invention is to provide an image processing apparatus capable of suppressing power consumption as compared with the prior art by energizing a device.

In order to achieve the above object, the present invention includes communication means for communicating with an external device such as a computer or another image processing device, and information about the device included in the image processing device from the external device (hereinafter referred to as device information). ) Is received by the communication means, and the processing corresponding to the device information processing request is executed. The characteristic features shown in the following (1) to (4) It has the structure.
(1) Energization switching means for switching whether or not to individually energize each of a plurality of functional blocks that are parts or sets of parts divided according to functions.
(2) When each of the functional blocks is in a non-energized state, it is necessary to determine the functional block necessary for executing processing corresponding to the device information processing request received from the external device by the communication unit Functional block discrimination means.
(3) Function block automatic starting means for switching only the functional blocks determined to be necessary by the necessary function block determining means to the energized state by controlling the energization switching means.
(4) Controlling the energization switching unit after processing corresponding to the device information processing request received by the communication unit is performed on the functional block that has been energized by the functional block automatic activation unit. A function block automatic stop means for switching to a non-energized state.
As described above, when the image processing apparatus is in the power saving state, the image processing apparatus temporarily receives only the functional blocks necessary for the processing corresponding to the request for the device information processing request received from the external device through the communication unit. The state is switched to the energized state, and when the processing according to the request is completed, the state again returns to the power saving state. As a result, unnecessary function blocks are not activated unnecessarily, and power consumption can be reduced.
Here, the power saving state is a state where each of the functional blocks is not energized, and the communication means, the necessary function block discriminating means and the function block automatic starting means are energized. That means.

In addition, it is more preferable that the image processing apparatus according to the present invention further includes the components shown in the following (5) to (7).
(5) Energization necessity determination means for determining whether the functional block needs to be energized when the device information processing request is received from the external device by the communication means when each of the functional blocks is not energized. .
(6) Depending on the determination result of the energization necessity determination unit, the device information processing request received by the communication unit is stored in a predetermined request storage unit, or a process corresponding to the device information processing request is performed. Request storage control means for controlling whether or not the function block is executed after the function block automatic activation means is energized.
(7) Activation waiting control means for controlling processing corresponding to the device information processing request stored in the request storage means to be executed when the functional block necessary for this is in a state of being energized.
Here, as the energization necessity determination unit shown in (5), for example, a control state of a timer control unit (provided in the image processing apparatus) that controls the energization state of the functional block according to a predetermined time schedule, It may be possible to determine whether the functional block is energized based on the free space of the request storage means, the number of device information processing requests stored in the request storage means, and the like.
An image processing apparatus having the above configuration executes a process corresponding to the device information processing request received from an external device when in a power saving state, or waits for the power saving state to be released or is necessary It is possible to switch according to the situation whether the minimum functional block is activated and executed immediately. As a result, each time the device information processing request is received, power consumption can be reduced compared to an image processing apparatus that immediately processes and cancels the power saving state in response to the request.

In addition, when the communication unit receives the device information processing request from the external device when each of the functional blocks is in a non-energized state, without waiting for execution of processing corresponding to the device information processing request, It is also conceivable to include an acceptance completion response means for making a request acceptance completion response to the external device that is the transmission source of the device information processing request.
As a result, the external device can receive a response of request acceptance completion from the image processing device at an early stage.
Further, if the communication unit is configured to serve as the necessary function block determination unit and the function block automatic activation unit, the number of devices to be energized in the power saving state is reduced, and further power consumption is reduced. Can be suppressed.

According to the present invention, when the image processing apparatus is in the power saving state, only the functional blocks necessary for processing corresponding to the request are temporarily received for the device information processing request received from the external device through the communication unit. When the processing according to the request is completed, the power saving state is restored. Thereby, unnecessary function blocks are not activated unnecessarily (energized), and power consumption can be reduced.
Also, the processing corresponding to the device information processing request received from the external device when in the power saving state is executed after the power saving state is released, or the minimum necessary functional blocks are activated. By switching according to the situation whether to immediately execute the device, each time the device information processing request is received, more power is consumed compared to an image processing device that immediately releases and processes the power saving state according to the request. Electric power can be reduced.
Further, if the image processing apparatus includes an acceptance completion response means for responding to the external device with a request acceptance completion without waiting for execution of the processing corresponding to the device information processing request, the function block is activated. Even when the time required is long, the external device is preferably released from the waiting state for processing at an early stage.

Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.
FIG. 1 is a block diagram showing a schematic configuration of an image processing apparatus X according to an embodiment of the present invention, FIG. 2 is a block diagram showing a schematic configuration of a NIC included in the image processing apparatus X, and FIG. 4 is a block diagram showing a schematic configuration of a control unit included in FIG. 4, FIG. 4 is a power system diagram showing a first embodiment of a power connection relationship in the image processing apparatus X, and FIG. 5 is a sleep mode corresponding to data reception of the image processing apparatus X 6 is a flowchart showing the procedure of the release processing, FIG. 6 is a flowchart showing the procedure of the sleep mode release processing when the device information processing request is received by the image processing apparatus X, and FIG. 7 is a diagram showing an example of the data configuration of the device information processing request. 8 is a diagram schematically illustrating a weekly schedule for weekly timer control in the image processing apparatus X, and FIG. 9 is a diagram illustrating an example of a NIC power control rule in the image processing apparatus X. FIG. 0 is a power supply system diagram showing a second embodiment of FIG, 11 is connection of the power supply in the image processing apparatus X representing an example of the power control rule of the main control unit in the image processing apparatus X.

First, the configuration of the image processing apparatus X will be described with reference to the block diagram shown in FIG.
The image processing apparatus X is configured to be able to communicate with an external apparatus 31 such as a personal computer via a network 30 such as a LAN, WAN, or Internet conforming to the standard IEEE 802.3, for example, and communicates with the external apparatus 31. As an example of communication means, a network interface card 5 (hereinafter referred to as NIC) is provided. Here, as the external device 31 that can communicate with the image processing apparatus X via the network 30, maintenance of the user terminal of the image processing apparatus X, another image processing apparatus, and the image processing apparatus X is performed. An operator's terminal can be considered.
As shown in FIG. 1, in addition to the NIC 5, the image processing apparatus X includes an operation unit 1, a display unit 2, a hard disk drive 3 (hereinafter referred to as HDD), an image processing calculation unit 4, a scanner control unit 6, and a scanner unit. 6a, a print control unit 7, a print unit 7a, a post-processing control unit 8, a shifter 8a, a puncher 8b, a stapler 8c, a main control unit 9, a main energization switching circuit 10, a main power source 21, a sub power source 22, and the like.
Further, the scanner unit 6a includes an automatic document feeder 6b (hereinafter referred to as ADF), and the print unit 7a includes a fixing heater 7b.
In the example shown in FIG. 1, the main control unit 9, the image processing calculation unit 4, the NIC 5, the scanner control unit 6, the print control unit 7, the post-processing control unit 8, and the main energization switching circuit 10 are mutually connected by a bus 11. It is connected.
The operation unit 1 is an operation input means for inputting information, and includes a sheet key, a touch panel provided on the surface of the liquid crystal display device, and the like.
The display unit 2 is an information display unit, and includes a liquid crystal display device, an LED lamp, and the like. The operation unit 1 and the display unit 2 constitute a man-machine interface for the user.

The HDD 3 is a large-capacity non-volatile memory that stores processing data as necessary during processing of read image data read from a document, print processing of image data, and the like. Further, the HDD 3 is also used as a storage destination of a data file transmitted from the external device 31 in response to a request from the external device 31 that can communicate with the image processing apparatus X. As described above, the process of saving the data file transmitted from the external device 31 to the HDD 3, the change of the storage location (data folder) of the saved data file, the change of the file name, the rewriting of the data, and the erasing of the data Hereinafter, the process of performing the above is referred to as a data filing process.
The image processing calculation unit 4 is configured by a dedicated signal processing circuit or a DSP (Digital Signal Processor) or the like, performs various image processing on the image data, generates print data (image data, print job, etc.) used for image formation, Generation of image data to be transmitted to the external device 31 (for example, image data that has been subjected to predetermined encoding such as JPEG format), processing for encrypting the image data, and decoding of the encrypted image data A process, a process of compressing and encoding image data, a process of expanding (restoring) the compressed and encoded image data, or the like is performed.

The scanner control unit 6 controls the scanner unit 6a and the ADF 6b by outputting a control signal to the scanner unit 6a and the ADF 6b that execute processing for reading an image from a document.
The scanner unit 6a is a device that reads an image formed on a document from a document placed on a glass document table (not shown) or a document conveyed by the ADF 6b. In addition to the ADF 6b, the scanner unit 6a is provided with, for example, a light source that irradiates light on an image surface of a document and a mirror that reflects reflected light from the document in a predetermined direction, and is configured to move along the document. A movable optical unit, a motor (an example of a driving unit) that drives the movable optical unit, a fixed mirror that guides light emitted from the movable optical unit along a predetermined path, and the light. And a CCD (Charge Coupled Device) that photoelectrically converts light passing through the lens and outputs an electrical signal corresponding to the amount of the light (that is, light reflected on the image surface of the document). ing. When reading the image from the document placed on the document table, the movable optical unit irradiates the image surface with light while moving along the document. On the other hand, when reading an image from a document conveyed by the ADF 6b, the movable optical unit is fixed at a predetermined position facing the document conveyance path, and irradiates the document being conveyed with light. The electrical signal output from the CCD is transmitted to the image processing calculation unit 4 as image data.
The ADF 6b is a device that transports documents set on a document supply tray one by one along a predetermined transport path and discharges them to a document discharge tray. The ADF 6b includes, for example, a paper feed roller that feeds documents one by one from a document supply tray to a document transport path, a document transport roller that transports documents in the document transport path, and a motor that drives these rollers. I have.

The print control unit 7 controls the print unit 7a by outputting a control signal to the print unit 7a that executes processing relating to image forming processing.
The print unit 7a sequentially feeds recording sheets stored in a paper feed cassette (not shown) one by one and conveys the recording paper to a paper discharge tray through a predetermined image forming position. At the image forming position, the scanner unit 6a Thus, an image is formed (output) on the recording paper based on the image data of the document read from the document, the print data generated by the image processing calculation unit 4, and the like. Here, the image processing apparatus X functions as a copying machine by performing image forming processing based on image data of a document, and by performing image forming processing based on a print request (print job) received from the external device 31. Functions as a printer.
The printing unit 7a is, for example, a photosensitive drum that carries an image, a charging device that charges the photosensitive drum, and an exposure that writes an electrostatic latent image based on given image data or a print job on the surface of the photosensitive drum. A developing device for developing the electrostatic latent image as a toner image, a transfer device for transferring the toner image on the photosensitive drum onto the recording paper, a motor for driving the photosensitive drum and a roller for conveying the recording paper, and the like. Yes.
Further, the printing unit 7a includes a fixing device that heats and fixes the toner image transferred to the recording paper. The fixing device has a heating roller in which a fixing heater 7b is incorporated, and the toner image is transferred. A pressure roller that presses the recording paper against the heating roller, a motor that drives each roller, and the like are also provided.

The post-processing control unit 8 outputs control signals to the shifter 8a, puncher 8b, and stapler 8c that perform various post-processing on the recording paper on which the image has been formed, so that the shifter 8a, puncher 8b, and stapler 8c are output. Is to control.
The shifter 8a includes a movable tray provided with a plurality of paper discharge trays, and the print unit 7a performs image forming processing for a plurality of copies of a group of image data and print jobs (hereinafter referred to as a set of jobs). When performed continuously, the recording sheets are sorted according to a predetermined rule. Here, the movable tray is configured to be able to move the position of each paper discharge tray with respect to the recording paper discharge port.
For example, in the shifter 8a, the movable tray is controlled so that the recording paper after image formation is discharged for each set of jobs or for each same page to each discharge tray. Further, the puncher 8b performs a process of making a punch hole in the recording paper after image formation. The stapler 8c performs a staple binding process on a plurality of recording sheets after image formation. Hereinafter, the shifter 8a, the puncher 8b, and the stapler 8c are collectively referred to as a post-processing execution unit.
Also, a scanner unit 6a that directly performs individual processing of image reading, image formation, and post-processing on recording paper, a printing unit 6b, a scanner control unit 6 that controls each of the post-processing execution units 8a to 8c, and a print control unit. 7 and the post-processing control unit 8 are collectively referred to as a local control unit.

The NIC 5 is a communication interface that transmits and receives data to and from the external device 31 through a network 30 such as a LAN that complies with the standard IEEE802.3. The NIC 5 is, for example, a process for transmitting image data generated by the image processing calculation unit 4, image data read by the scanner unit 6 a, or data stored in the HDD 3 to the external device 31, Processing for receiving various data processing requests from the device 31 is performed. Here, the data processing request includes a print request (so-called print job) for requesting image formation on recording paper, a scan request for requesting reading an image from a document, and performing the data filing process. Data filing requests to be included.
Further, the NIC 5 receives a device information processing request for requesting a predetermined process for information related to the device included in the image processing apparatus X (hereinafter referred to as device information) from the external device 31, and responds to the request as necessary. A process of transmitting (replying) to the external device 31 is also performed. This device information will be described later.

The main power supply 21 and the sub power supply 22 are power supply circuits that supply power to each component of the image processing apparatus X.
As will be described later, the main energization switching circuit 10 switches a part of the main control unit 9 and the like by switching whether one of the sub power sources 22 is connected to a commercial power source in accordance with a control signal received from the NIC 5. This is a switch circuit that switches whether to energize the device. Details thereof will be described later.
Further, the main energization switching circuit 10 is configured to change its switching state also in accordance with a control signal received from the operation unit 1.

The main control unit 9 controls each of the operation unit 1, the display unit 2, the HDD 3, and the image processing calculation unit 4, and further includes the scanner control unit 6, the print control unit 7, and the post-processing control unit 8. In the meantime, information necessary for data processing executed by each control unit and information obtained by the data processing are exchanged.
For example, the main control unit 9 performs, for the print control unit 7, the size of the recording paper serving as the image forming destination, the output image reduction ratio, the density correction value, the color image forming process, or the monochrome image forming process. And the like, the print control unit 7 obtains information on the number of recording sheets on which the image formation has been completed, information on errors that have occurred in the print unit 7a, and the like. Further, the main control unit 9 delivers information on the image reading range in the original to the scanner control unit 6, while the number of originals read from the scanner control unit 7 using the ADF 6b. Information, image data read by the scanner unit 6a, information on errors occurring in the ADF 6a, and the like. Further, the main control unit 9 delivers to the post-processing control unit 8 information regarding the type of sorting processing by the shifter 8a, information on the number of recording sheets to be punched or stapled by the puncher 8b or the stapler 8c, and the like. On the other hand, the post-processing control unit 8 acquires error information and the like generated in the shifter 8a, the puncher 8b, and the stapler 8c.

As described above, the main control unit 9, HDD 3, scanner control unit 6, scanner unit 6a, print control unit 7, print unit 7a, post-processing control unit 8, and post-processing execution units 8a to 8c each have functions. It is a functional block configured as a part or a set of parts divided according to it.
In addition, the HDD 3 having a motor that rotates the hard disk and the main control unit 9 that controls the HDD 3 have a relationship in which the main control unit 9 is higher and the HDD 3 is lower.
Further, the main control unit 9 is a functional block that exchanges information necessary for data processing or information obtained by data processing with each of the plurality of local control units 6 to 8. The local control units 6 to 8 have a lower order relationship.
The scanner unit 6a and post-processing execution units 8a to 8c, which are functional blocks (an example of a controlled block) that include various motors, are subordinate, and the scanner control unit 6 and post-processing side that controls these units. The control unit 8 has a higher order relationship.
Similarly, the printer 7a includes various motors and a fixing heater 7b, and the print unit 7a, which is a functional block to be controlled (an example of a controlled block), is the lower level, and the print control unit 7 that controls this is the higher level. Have a relationship.
Accordingly, the uppermost functional block is the main control unit 9, the next lower functional block is the scanner control unit 6, the print control unit 7 and the post-processing control unit 8, and the next lower one (re-lower) functional block. A scanner unit 6a, a print unit 7a, and post-processing execution units 8a to 8c are provided. Thus, each functional block has a hierarchical relationship from the upper level to the lower level.

Next, the configuration of the NIC 5 will be described with reference to the block diagram shown in FIG.
The NIC 5 includes a bus connector 61, a bus control unit 62, an MPU 63, a memory control unit 64, a ROM 65, a flash memory 66, a network control unit 67, a network connector 68, a time measuring unit 69, and the like.
The bus connector 61 is a connector connected to the bus 11, and the bus control unit 62 performs signal transmission with other devices through the bus 11.
The network connector 68 is a connector physically connected to the network 30, and the network control unit 67 performs communication control in conformity with a predetermined network protocol such as standard IEEE 802.3 and TCP / IP.
The MPU 63 executes a program stored in the ROM 65 in advance, thereby relaying signal transmission between the bus 11 and the network 30 or when a predetermined process is requested from the external device 31 via the network 30. In addition, it is a calculation means for performing various processes such as a process for responding to this. The program to be executed is developed and executed in a RAM (not shown) built in the MPU 63. The MPU 63 accesses the ROM 65 and the flash memory 66 via the memory control unit 64.
The NIC 5 also functions as a Web server when the MPU 63 executes a Web server program stored in advance in the ROM 65.
The clock unit 69 includes a clock transmitter that generates a transmission signal at a constant period, and measures the current time and the time set by the MPU 63 (hereinafter referred to as a timer setting time) based on the transmission signal. It is. Information on the current time measured by the time measuring unit 69 and information that the time has elapsed since the timer set time is set are transmitted to the MPU 63.

Next, the configuration of the main control unit 9 and the local control units 6 to 8 will be described with reference to the block diagram shown in FIG. Hereinafter, the main control unit 9 and the local control units 6 to 8 are collectively referred to as a control unit.
Each of the control units 6 to 9 includes a bus connector 71, a bus control unit 72, an MPU 73, a memory control unit 74, a ROM 75, a flash memory 76, an I / O port 77, and the like.
Here, the bus connector 71, the bus control unit 72, the memory control unit 74, the ROM 75, and the flash memory 76 are the same as the bus connector 61, the bus control unit 62, the memory control unit 64, the ROM 65, and the flash memory 66 provided in the NIC 5, respectively. It has the function of. Of course, it goes without saying that the contents of programs and data stored in the ROM 75 and the flash memory 76 are different from those stored in the ROM 65 and the flash memory 66 of the NIC 5.
The I / O ports 77 of the control units 6 to 9 are signal lines for transmitting control signals output from the control units 6 to 9 to the devices to be controlled, and the control units 6 to 9 are input from various sensors. A signal line for transmitting various detection signals to be connected is connected, and is an interface that relays between these signal lines and the MPU 73.
For example, the I / O port 77 of the main control unit 9 is connected to signal lines leading to devices and sensors that constitute the operation unit 1, the display unit 2, and the HDD 3. The I / O port 77 of the scanner control unit 6 is connected to signal lines leading to devices such as a motor, a light source, and a sensor that constitute the scanner unit 6a, and the I / O port 77 of the print control unit 7 is connected to the I / O port 77. Signal lines leading to devices such as motors, sensors, and heaters provided in the printing unit 7a are connected. Similarly, the I / O port 77 of the post-processing control unit 8 is connected to signal lines that lead to devices and sensors included in the post-processing execution units 8a to 8c.
In FIG. 2 and FIG. 3, flash memories 66 and 76 are provided as nonvolatile storage means capable of writing and reading data by the MPUs 63 and 73. Instead of the flash memories 66 and 76, FIG. It is also conceivable to employ other nonvolatile storage means such as an EEPROM.

By the way, the following information is included in the said apparatus information regarding the apparatus with which the said image processing apparatus X is provided, for example.
(1) Device identification information Device name, device (ROM, electronic board, etc.) version information, etc. (2) Information relating to executable functions Information about the size of recording paper that can be imaged (ie, provided in the print unit 7a) Information on the size of the recording paper contained in the paper cassette), information on the image forming speed that can be executed, information on whether or not both sides of the original can be read, information on whether or not image formation is possible on both sides of the recording paper, Information about whether post-processing (sorting processing, punching processing, stapling processing) on recording paper is possible, information on whether color image formation is possible, etc. (3) Information on the mounting status of optional equipment Post-processing that is optional equipment Information on whether or not each of the execution units (shifter 8a, puncher 8b, and stapler 8c) is mounted (even if post-processing execution units 8a to 8c are mounted) If the setting for prohibiting has been made, the post-processing to the recording paper is the non-executable state)
(4) Information on the operation status of the device During standby, during operation, the open / close state of the document cover provided in the scanner unit 6a, etc. (5) Setting information for the device IP address set in the NIC 5, destination information used for e-mail transmission and facsimile transmission (E-mail address, telephone number, etc.), information on the control parameters of the device (information on the setting value of the bias voltage for the transfer device and the developing device provided in the printing unit 7a, information on the timing of sending the recording paper or the document) Information on device usage results Cumulative number of executions of processing by each functional block (image reading processing, image forming processing, etc.), remaining of fixing device, photosensitive drum or laser device for writing electrostatic latent image provided in printing unit 7a Lifetime information, etc. (7) Information on abnormalities that have occurred in the device Jam occurrence history of manuscripts and recording paper , Error occurrence history in post-processing execution units 8a to 8c, NIC 5 communication error occurrence history, etc. (8) Information on consumables equipped in the device Information on remaining amount of developer (toner) in the developing device, recording in the fixing device Information on the remaining amount of paper peeling oil, information on the remaining number of recording paper stored in the paper feed cassette provided in the printing unit 7a, etc.

Each piece of device information described above is stored in a memory included in a functional block corresponding to the information. That is, device information related to the NIC 5 is stored in the ROM 65 and flash memory 66 of the NIC 5, and device information related to the main control unit 9 is stored in the ROM 75 and flash memory 76 of the main control unit 9. The device information related to the scanner control unit 6 and the scanner unit 6a is stored in the ROM 75 and the flash memory 76 of the scanner control unit 6, and the device information related to the print control unit 7 and the print unit 7a is stored in the ROM 75 and the flash memory 76 of the print control unit 7. In addition, device information related to the post-processing control unit 8 and the post-processing execution units 8a to 8c is stored in the ROM 75 and the flash memory 76 of the post-processing control unit 8, respectively.
The device information shown above is stored in advance in the ROM 65 of the NIC 5 or the ROM 75 of the control units 6 to 9 and is not updated thereafter, and the MPU 63 of the NIC 5 or the MPU 73 of the control units 6 to 9. By executing processing according to a predetermined program, there is device information recorded in the flash memories 66 and 76. Here, when the device information processing request is received from the external device 31 by the NIC 5, the MPU 63 of the NIC 5 and the MPU 73 of each of the control units 6 to 9 execute processing corresponding to the device information processing request (device information). An example of processing means). As the device information processing request, a transmission request for requesting device information to be transmitted to the external device 31 or device information is set for the corresponding device (that is, stored in the flash memories 66 and 76). There is a setting request for
As described above, the NIC 5 and each of the control units 6 to 8 which are a part of the functional block are components or a set of components including a storage unit such as a ROM or a flash memory that holds device information related to the device itself.

Part of the device information described above is stored in advance in the ROM 65 and flash memory 66 of the NIC 5 and the ROM 75 and flash memory 76 of the controllers 6 to 9. Other device information is recorded in the flash memories 66 and 76 by the MPU 63 of the NIC 5 and the MPU 73 of each of the control units 6 to 9 executing processing according to a predetermined program.
Each piece of device information is stored in a memory included in the corresponding device. That is, device information related to the NIC 5 is stored in the ROM 65 and flash memory 66 of the NIC 5, and device information related to the main control unit 9 is stored in the ROM 75 and flash memory 76 of the main control unit 9. Further, device information related to the scanner control unit 6 and the scanner unit 6a is stored in the ROM 75 and the flash memory 76 of the scanner control unit 6, and device information related to the print control unit 7 and the print unit 7a is stored in the ROM 75 and the flash memory 76 of the print control unit 7. In addition, device information related to the post-processing control unit 8 and the post-processing execution units 8a to 8c is stored in the ROM 75 and the flash memory 76 of the post-processing control unit 8, respectively.

Further, when the control units 6 to 9 (functional blocks) are in the “energized state”, the NIC 5 stores the device information stored in the memory from the control units 6 to 9 (devices related to the control units 6 to 9). Information) is acquired at a predetermined timing, and the acquired device information is stored in the flash memory 66 of the NIC 5. This function is realized by the MPU 63 of the NIC 5 executing a predetermined program.
Similarly, when the local control units 6 to 8, which are lower functional blocks, are in the “energized state”, the main control unit 9 stores the devices stored in the memory from the local control units 6 to 8. A part or all of the information (device information related to the local control units 6 to 8) is acquired at a predetermined timing, and the acquired device information is stored in the flash memory 76 of the main control unit 9. This function is realized by the MPU 73 of the main control unit 9 executing a predetermined program.
The NIC 5 and the main control unit 9 obtain device information from other functional blocks at a predetermined cycle, for example, and store the device information in the flash memories 66 and 76.
In general, since the frequency of updating the device information is low, the device information that the NIC 5 or the main control unit 9 acquires from other functional blocks and stores in the flash memories 66 and 76 is often the latest. The content matches the device information (that is, the device information stored in the corresponding device). However, consistency of the contents is not always guaranteed. In this way, the device information that the NIC 5 or the main control unit 9 acquires from other functional blocks at a predetermined timing and stores in the flash memories 66 and 76 is distinguished from the latest device information. Called.

[Power system]
Next, referring to the power supply system diagram shown in FIG. 4, a first embodiment of the power supply connection relation to each functional block will be described.
In the example illustrated in FIG. 4, the image processing apparatus X includes nine sub power sources 22. Hereinafter, the first sub power source 221 to the ninth sub power source 229 are referred to.
The main power source 21 is a power source that supplies power to the NIC 5, the operation unit 1, and the main energization switching circuit 10.
The main power supply 21 is connected to a commercial power supply 50 that is a base power supply source for the entire image processing apparatus X via a manual changeover switch 40 that switches between turning on and off the power supply line according to a manual operation. It is connected. When the user performs a switching operation of the manual changeover switch 40, whether or not the NIC 5, the operation unit 1, and the main energization switching circuit 10 are energized is switched. Accordingly, the NIC 5, the operation unit 1, and the main energization switching circuit 10 are configured so that the manual changeover switch 40 is switched from the conductive state to the cut-off state by a user operation when the image processing apparatus X is connected to the commercial power supply 50. Unless otherwise, it is always energized. Further, when the manual changeover switch 40 is switched to the shut-off state, the entire image processing apparatus X enters a non-energized state (stopped state).
In FIG. 4, the power supply line is represented by a solid line, and the other signal transmission lines are represented by broken lines.

On the other hand, the first sub power supply 221 is a power supply circuit that supplies power to the main control unit 9, the display unit 2, and the image processing calculation unit 4.
The second sub power supply 222, the third sub power supply 223, and the fourth sub power supply 224 are power supply circuits that supply power to the scanner control unit 6, the print control unit 7, and the post-processing control unit 8, respectively. .
The fifth sub power source 225, the sixth sub power source 226, and the ninth sub power source 229 are power supply circuits that supply power to the HDD 3, the scanner unit 6a, and the post-processing execution units 8a to 8c, respectively.
The seventh sub power supply 227 is a power supply circuit that supplies power to devices other than the fixing heater 7b in the printing unit 7a, and the eighth sub power supply 228 supplies power to the fixing heater 7b. A power supply circuit to be supplied.

Further, each of the first sub power supply 221 to the ninth sub power supply 229 automatically switches the commercial power supply 50 between the manual changeover switch 40 and whether the power supply line is turned on or off based on a predetermined control signal. They are connected via switches 41-49. As is clear from FIG. 4, the automatic changeover switch 41 and the first sub power supply 221, the automatic changeover switch 42 and the second sub power supply 222,..., And the automatic changeover switch 449 and the ninth sub power supply 229 have a corresponding relationship. .
Thereby, after the manual changeover switch 40 is turned on, each of the sub power sources 221 to 229 is turned on only after the automatic changeover switches 41 to 49 are turned on.
Hereinafter, turning on and off the power supply line is referred to as ON and OFF, respectively. Similarly, the state in which the power supply line is turned on and the state in which the power supply line is cut off are referred to as an ON state and an OFF state, respectively.
Whether or not the automatic changeover switches 41 to 49 individually energize each of the functional blocks 6 to 10, 6 a, 7 a, and 8 a to 8 c depending on whether each of them is turned on or off. It functions as an energization switching means for switching between.

As shown in FIG. 4, the automatic changeover switch 41 is controlled to be turned on or off (hereinafter referred to as “ON / OFF”) by the main energization switching circuit 10 that operates according to a control signal from the NIC 5. That is, the main energization switching circuit 10 and the NIC 5 that controls the main energization switching circuit 10 control the energization of the main control unit 9, the display unit 2, and the image processing calculation unit 4 by controlling ON / OFF of the automatic switch 41. Thus, the NIC 5 also serves as a part of means for executing energization control for each functional block. Hereinafter, a part (specifically, a program module related to the control of the main energization switching circuit 10 executed by the MPU 63 and the MPU 63) that realizes the control function of the main energization switching circuit 10 among the components of the NIC 5 will be described. It is called 1 energization control execution part.
The first energization control execution unit of the NIC 5 is an automatic changeover switch 41 that switches energization to the main control unit 9 that is the highest functional block among a plurality of automatic changeover switches 41 to 49 (corresponding to energization switching means). Only one example (first energization control means). Here, the first energization control execution unit of the NIC 5 outputs a control signal to the main energization switching circuit 10 through the bus 11.
Further, all of the automatic changeover switches 42 to 45 are controlled to be turned ON / OFF by the main control unit 9. That is, the main control unit 9 controls energization of each of the scanner control unit 6, the print control unit 7, the post-processing control unit 8, and the HDD 3 which are functional blocks one level lower than the main control unit 9.
The automatic changeover switch 46, the automatic changeover switches 47 and 48, and the automatic changeover switch 49 are controlled to be turned ON / OFF by the scanner control unit 6, the print control unit 7, and the post-processing control unit 8, respectively. . That is, the scanner control unit 6 controls energization to the scanner unit 6a, which is a functional block one level lower than that. Similarly, the print control unit 7 controls energization to the print unit 7a which is a functional block one level lower than that. Further, the post-processing control unit 8 controls energization to the post-processing execution units 8a to 8c, which are functional blocks one level lower than that. In addition, each control part 6-9 outputs a control signal with respect to the automatic changeover switches 42-49 through the I / O port 77 with which each is provided, and the process which outputs the control signal is each control part 6- 9 is realized by the MPU 73 included in 9 executing a predetermined program. Hereinafter, among the components of each control unit 6-9, the part for realizing the control function of the automatic changeover switches 42-49 (specifically, the MPU 73 and the automatic changeover switches 42-49 executed by the MPU 73). The program module related to control) is referred to as a second energization control execution unit.
As described above, the second energization control execution unit of each of the control units 6 to 9 is one with respect to its own functional block (the functional block) among the plurality of automatic changeover switches 41 to 49 (corresponding to the energization switching unit). Only those for switching energization to other functional blocks below the hierarchy are controlled (an example of second energization control means).

Next, the basic operation of energization control for each functional block will be described.
First, a basic operation when starting energization of each functional block when each functional block is not energized will be described. Hereinafter, a state in which the functional block is not energized is referred to as “no energization state”, and an energized state is referred to as “energization state”.
[Basic operation for starting energization]
When switching each functional block from the “non-energized state” to the “energized state”, first, the first energization control execution unit and the main energization switching circuit 10 in the NIC 5 switch the automatic changeover switch 41 from the OFF state to the ON state. . As a result, the energization state for the main control unit 9 which is the highest-level functional block is switched from the “no energization state” to the “energization present state”.
Next, when the main control unit 9 enters the “energized state”, the second energization control execution unit in the main control unit 9 is one level lower than the main control unit 9 among the automatic changeover switches 42 to 45. The one corresponding to the functional block (one that needs energization) is switched from the OFF state to the ON state. As a result, the functional block (one or more of the HDD 3 and the local control units 6 to 8) one level lower than the main control unit 9 is switched to the “energized state”.
Further, when the local control units 6 to 8 are in the “energized state”, the second energization control execution unit in the local control units 6 to 8 is one of the automatic changeover switches 46 to 49 with respect to the local control unit. The one corresponding to the functional block in the lower hierarchy (the one requiring energization) is switched from the OFF state to the ON state. As a result, the functional block (one or more of the scanner unit 6a, the print unit 7a, and the post-processing execution units 8a to 8c) lower than the local control units 6 to 8 is switched to the “energized state”.
As described above, in the image processing apparatus X, the function block is “energized” by the action of the first energization control execution unit and the main energization switching circuit 10 in the NIC 5 and the second energization control effective unit in each of the control units 6 to 9. When switching from "None" to "Electrified", execute the hierarchical energization control process to switch the energized state of each functional block to switch those functional blocks from "Higher" to "Lower" in order. .

[Basic operation to stop energization]
Next, a basic operation for stopping energization of each functional block when each functional block is in the “energized state” will be described.
First, the first energization control execution unit in the NIC 5 is a lower functional block than the main control unit 9 when switching the main control unit 9 to be controlled from the “energized state” to the “no energized state”. It is confirmed that each of the local control units 6 to 8 and the lower-level functional blocks of the scanner unit 6a, the print unit 7a, and the post-processing execution units 8a to 8c are all in the “no power supply state”. Only when it is confirmed, the automatic changeover switch 41 is switched from the ON state to the OFF state. That is, when the confirmation cannot be performed, switching the automatic changeover switch 41 from the ON state to the OFF state is prohibited.
In addition, the second energization control execution unit in the main control unit 9 is further subordinate to the scanner control unit 6 when the scanner control unit 6 to be controlled is switched from the “energized state” to the “no energized state”. It is confirmed that the scanner unit 6a, which is all functional blocks, is in the “non-energized state”, and the automatic changeover switch 42 is switched from the ON state to the OFF state only when it is confirmed. That is, when the confirmation cannot be performed, switching the automatic changeover switch 42 from the ON state to the OFF state is prohibited.
Similarly, when the second energization control execution unit in the main control unit 9 switches the print control unit 7 or the post-processing control unit 8 to be controlled from the “energized state” to the “no energized state”, the print control is performed. When the printing unit 7a or the post-processing execution units 8a to 8c, which are all functional blocks lower than the unit 7 or the post-processing control unit 8, are confirmed to be in the “no power supply state” and confirmed. Only the automatic changeover switch 43 or 44 is switched from the ON state to the OFF state. That is, when the confirmation cannot be performed, switching the automatic changeover switch 43 or 44 from the ON state to the OFF state is prohibited.

As described above, the first energization control execution unit of the NIC 5 and the second energization control execution unit of the main control unit 9 (those having lower functional blocks than the functional block that is the target of the energization control) The process of switching the functional block one level lower, which is the control target, to the “non-energized state” is executed only when it is confirmed that the lower functional block is in the “non-energized state”. As a result, each of the local control units 6 to 8 which are functional blocks on the control side is controlled before the scanner unit 6a, the printing unit 7a and the post-processing execution units 8a to 8c which are functional blocks on the controlled side. It can be surely prevented from falling into an unsafe situation where it can be switched to the “no power supply state”.
Here, as a method of confirming the energization state of the functional block further lower than the functional block subject to energization control, for example, for the functional block in the “energized state” subject to control, the lower side It may be possible to inquire about the energization state of the functional block and confirm it based on a response to the inquiry. In addition, it is conceivable that the latest energization state of each functional block is stored in the flash memory 66 of the NIC 5 and the energization state of the lower functional block is confirmed by referring to the stored contents. In this case, each functional block having the second energization control execution unit is provided with a function for notifying the NIC 5 of switching information of the energization state of the functional block one layer lower, and further, the NIC 5 is notified by each functional block. Based on this, a function for storing the latest energization state of each functional block in the flash memory 66 may be provided.

In the image processing apparatus X, when power is supplied to each functional block, for example, the NIC 5 or the main control unit 9 performs the following two conditions (hereinafter referred to as a first sleep condition and a second sleep condition, respectively). ) Is determined. When any one of the sleep conditions is satisfied, the image processing apparatus X shifts to a sleep mode in which the power supply to each functional block is interrupted according to the basic operation for stopping the power supply described above. In the sleep mode, all nine automatic changeover switches 41 to 49 are switched to the “OFF state”, and all the functional blocks that are the power supply destinations of the nine sub power sources 221 to 229 are all in the “no power supply state”. That is, only a few devices including the NIC 5 (the NIC 5, the operation unit 1, and the main energization switching circuit 10) are in the “energized state”.
When the MPU 63 of the NIC 5 shifts to the sleep mode, the sleep mode shift reason information indicating which of the first sleep condition and the second sleep condition is satisfied is transferred to the flash memory 66 of the NIC 5. Shall be recorded.

[First sleep condition]
The first sleep condition is a condition that the current date and time belongs to a time zone set in the sleep mode in a predetermined weekly schedule (an example of a time schedule). Hereinafter, controlling the energization state of each functional block by controlling the automatic changeover switches 41 to 49 according to a predetermined weekly schedule is referred to as weekly timer control.
FIG. 8 schematically shows the contents of a weekly schedule for weekly timer control. Each square in FIG. 8 is a time zone defined by the day of the week (Monday to Sunday) and the time (00 to 23:00). In addition, blank cells represent time zones set in the sleep mode, and cells marked with “*” represent time zones set in the normal mode in which each functional block is energized. .
For example, the MPU 63 of the NIC 5 stores the weekly schedule information shown in FIG. 8 in the flash memory 66 in advance. Further, the first energization control execution unit of the NIC 5 periodically acquires the current time measured by the time measuring unit 69, and the current time is stored in the flash memory 66 in the weekly schedule and in the sleep mode and the normal mode. Which time zone is set is determined. Then, the first energization control execution unit controls the automatic changeover switch 41 through the main energization switching circuit 10 according to the determination result, and further notifies the control units 6 to 9 through the bus 11 of energization control information. By doing this, the second energization control execution unit of each of the control units 6 to 9 is controlled to perform the automatic changeover switches 42 to 49. In this case, the NIC 5 is an example of a timer control unit.
The main control unit 9 has a weekly schedule setting function that allows the user to set the contents of the weekly schedule by controlling the operation unit 1 and the display unit 2. The weekly schedule set by the weekly schedule setting function is transmitted from the main control unit 9 to the NIC 5, and the MPU 63 of the NIC 5 stores it in the flash memory 66.

[Second sleep condition]
In the second sleep condition, when the first sleep condition is not established, there is no operation input through the operation unit 1 and no data is received from the external device 31 through the network 30 in advance. It is a condition that it continues for a predetermined time or more.
For example, when the NIC 5 determines whether or not the second sleep condition is successful, the first energization control execution unit of the NIC 5 detects the presence / absence of an operation input to the operation unit 1 via the main energization switching circuit 10 and The presence or absence of data reception from the external device 31 is detected via the control unit 67. In this case, every time an operation input is made to the operation unit 1, a control signal indicating that is sent from the operation unit 1 to the main energization switching circuit through a signal line connecting the operation unit 1 and the main energization switching circuit 10. 10 and further transmitted from the main energization switching circuit 10 to the NIC 5 through the bus 11.
Further, the first energization control execution unit of the NIC 5 sets the timer setting time in the time measuring unit 69 and acquires a response from the time measuring unit 69, so that there is no operation input through the operation unit 1 and the network 30. It is detected that a state in which no data is received from the external device 31 is continued for a predetermined time or more. Then, the first energization control execution unit controls the automatic changeover switch 41 through the main energization switching circuit 10 according to the detection result, and further notifies the control units 6 to 9 through the bus 11 of energization control information. By doing this, the second energization control execution unit of each of the control units 6 to 9 is controlled to perform the automatic changeover switches 42 to 49.

Next, the contents of the device information processing request 00d received by the NIC 5 from the external device 31 through the network 30 will be described with reference to FIG.
As shown in FIG. 7, the following information is included in the device information processing request 00d.
(1) Sender ID 01d
This is identification information of the sender of the device information processing request 00d (the user of the external device 31 that is the sender).
(2) Transmission date and time 02d
(3) Request type 03d
This is information indicating whether or not the device information processing request 00d is a request for transmitting the device information to the external device 31 and a request for setting new device information. If the setting content of the request type 03d is “transmission”, this indicates that the device information processing request 00d is a request for transmitting the device information to the external device 31. In addition, if the setting content of the request type 03d is “setting”, it indicates that the device information processing request 00d is a request for setting new device information.
(4) Target device information 04d
The device information to be processed is information indicating which of the devices included in the image processing apparatus X is related. When the device belongs to the functional block, information for identifying the functional block is set. Therefore, the target device information 04d is information indicating which of the functional blocks the device information processing request is for requesting processing of the device information.
(5) Immediate processing designation information 05d
When the request type 03d is “setting”, this is information indicating whether or not it is a request that should immediately execute a process for setting new device information.
(6) Latest information acquisition designation information 06d
When the request type 03d is “transmission”, this is information indicating whether or not to request acquisition and transmission of the latest device information at that time from the corresponding device. When the latest information acquisition designation 06d is set to “present”, this means that transmission of the latest device information is requested instead of transmission of the duplicate device information.
(7) Information item 07d
It is information representing the item of the device information to be processed, that is, identification information (name etc.) of the device information.
(8) Setting information 08d
This is information indicating the contents (value) to be set when the request type 03d is “setting”. When the request type 03d is “transmission”, the setting information 08d is not included in the device information processing request 00d.

Next, a process in which the image processing apparatus X shifts from the sleep mode to the normal mode (hereinafter referred to as a sleep mode release process) will be described.
[Sleep mode canceling process according to operation input]
When the image processing apparatus X is in the sleep mode, the image processing apparatus X executes the sleep mode cancellation process in response to an operation input to the operation unit 1.
Specifically, when there is any operation input to the operation unit 1 in the sleep mode, a control signal indicating that is transmitted from the operation unit 1 to the main energization switching circuit 10, and the main energization switching circuit 10 switches the automatic changeover switch 41 to “ON”.
Thereafter, the second energization control execution unit of the main control unit 9 controls the automatic changeover switches 42 to 45 in accordance with the contents of the operation input to the operation unit 1 and the local control in the “energized state”. By controlling the units 6 to 8, the necessary functional blocks are switched to the “energized state”.

[Sleep mode release processing according to data reception]
When the image processing apparatus X is in the sleep mode and the device information processing request 00d is received from the external device 31 by the NIC 5, the first energization control execution unit of the NIC 5 and the main that has entered the “energized state”. The second energization control execution unit of the control unit 9 controls the automatic changeover switches 41 to 45 on the basis of the contents of the device information processing request 00d, so that sleep mode release processing (control for starting energization of each functional block) )I do.
Hereinafter, the procedure of the sleep mode canceling process according to the data reception by the NIC 5 will be described with reference to the flowcharts shown in FIGS. Note that S1, S2,... Shown below represent identification symbols of processing procedures (steps).

[Steps S1, S2, S3]
First, the first energization control execution unit of the NIC 5 determines whether new data is received from the external device 31 through the network 30 (S1). The first energization control execution unit of the NIC 5 repeats the process of step S <b> 1 until new data is received from the external device 31.
Furthermore, if the first energization control execution unit of the NIC 5 determines that new data has been received from the external device 31, whether the received data is the device information processing request 00d, the Web page transmission request, It is determined whether the data is (S2).
Here, when the first energization control execution unit of the NIC 5 determines that the new received data is neither the device information processing request 00d nor the Web page transmission request (other data), the image processing is performed. The device X executes a process according to a predetermined control rule (denoted as “other process” in the figure) (S20), and then returns the process to the above-described step S1.
When the first energization control execution unit of the NIC 5 determines that the new received data is a Web page transmission request, the NIC 5 functioning as the Web server externally sends the Web page according to the request through the network 30. The data is transmitted (returned) to the device 31 (S3), and then the process proceeds to steps S5 and S6 described later. Here, the Web page transmitted from the NIC 5 to the external device 31 is a Web page (information for displaying a screen for inputting information included in the device information processing request (see FIG. 7) on the display unit of the external device 31. An example of input screen information). This Web page is a screen display content described in HTML, XML, JavaScript (registered trademark of Sun Microsystems, Inc.), or the like. For example, this Web page is stored in advance in the ROM 65 or flash memory 66 of the NIC 5. Alternatively, the NIC 5 functioning as a Web server may generate a Web page that returns in response to a request from the external device 31.
On the other hand, although not shown in FIG. 5, the external apparatus 31 executes a Web browser program to request the image processing apparatus X to transmit an information input Web page (the Web page transmission request). ) And a screen according to the content of the Web page returned from the NIC 5 is displayed on the display unit. Further, when the external device 31 performs an input of information and a predetermined transmission operation through an input unit such as a keyboard or a mouse in a state where the Web page is displayed on the display unit, the external device 31 sends the device information processing request 00d to the image processing device. Send to X.
As described above, the NIC 5 (an example of a communication unit) included in the image processing apparatus X has a function of transmitting a Web page used for inputting information to be included in the device information processing request 00d to the external apparatus 31 (information input screen information). An example of a transmission function).
[Step S4]
On the other hand, if it is determined in step S2 that the new received data is the device information processing request 00d, the first energization control execution unit of the NIC 5 and the second energization control execution unit of the main control unit 9 perform the device information processing request. Current energization control process (hereinafter referred to as energization control process S4) is executed (S4), and then the process proceeds to steps S5 and S6 described later.

Hereinafter, the procedure (S100 to S115) of the energization control process S4 will be described with reference to the flowchart shown in FIG.
[Step S100]
First, the MPU 63 of the NIC 5 transmits a request reception completion response (information indicating that the device information processing request has been received) to the external device 31 that is the transmission source of the received device information processing request through the network control unit 67. (An example of acceptance completion response means). As described above, when the controller 5 receives a device information processing request from the external device 31 when each of the control units 6 to 9 (functional blocks) is in the “no power supply state”, the NIC 5 executes processing corresponding to the request. Without waiting, a response of the request acceptance completion is made.
Thereby, in the process to be described later, even when the time required for starting the control unit required for the process corresponding to the device information processing request is long, the external device 31 is released from the process waiting state at an early stage.
[Steps S101 and S102]
Subsequently, the first energization control execution unit of the NIC 5 refers to the target device information 04d of the device information processing request 00d, so that the device information processing request 00d requests processing of device information related to the NIC 5. Is determined (S101). Note that all device information related to the NIC 5 is stored in a memory (ROM 65 or flash memory 66) provided in the NIC 5.
In this step S101, when it is determined that the device information processing request 00d is a request for processing of device information related to the NIC 5, the first energization control execution unit of the NIC 5 Do not switch from "" to "energized". In this case, the NIC 5 executes a normal process according to the device information processing request 00d (S102), and then shifts the process to step S115 described later.
That is, when the request type 03d of the device information processing request 00d is “send”, the NIC 5 selects the information specified in the information item 07d from the device information stored in the memory of the NIC 5. This is identified and transmitted to the external device 31 through the network 30. Further, when the request type 03d of the device information processing request 00d is “setting”, the NIC 5 is designated by the information item 07d from the device information stored in the flash memory 66 of the NIC 5. A thing is specified, and this is set (updated) to the contents specified by the setting information 08d.
As described above, the NIC 5 functions to transmit device information to the external device 31 in response to the device information processing request 00d received from the external device 31, and the device information stored in the flash memory 66 of the NIC 5. And a function of updating.

[Step S103]
On the other hand, if it is determined in step S101 that the device information processing request 00d does not require processing of device information related to the NIC 5, the first energization control execution unit of the NIC 5 determines its own device (the image processing device X). The process for determining the current state of is executed (S103).
For example, the first energization control execution unit of the NIC 5 determines whether the current state of the own device is the free capacity of the flash memory 66 of the NIC 5 or the establishment of any of the first sleep condition and the second sleep condition. It is determined whether the current sleep mode has been entered (reason for entering the sleep mode), the number of data processing requests held in the flash memory 66 of the NIC 5, and the like. Here, the first energization control execution unit of the NIC 5 determines the sleep condition that is the reason for the transition to the sleep mode based on the sleep mode transition reason information stored in the flash memory 66 of the NIC 5.
Note that the state in which the current sleep mode is shifted to when the first sleep condition is satisfied, that is, the state in which the current sleep mode is shifted by the weekly timer control is an example of the control state of the weekly timer control means.

[Step S104]
Next, the first energization control execution unit of the NIC 5 receives the contents of the device information processing request 00d received during the sleep mode (see FIG. 7) and the state of the image processing apparatus X determined in step S103 (data processing request is received). In accordance with a predetermined power control rule based on the example of the state of the image processing apparatus X when received, whether or not the first sub power supply 221 is energized (that is, the main control unit 9, the display unit 2, and the image processing calculation unit) 4) and the processing to be executed are determined (S104).
FIG. 9 illustrates an example of a power supply control rule in the first energization control execution unit of the NIC 5.
In the power control rule illustrated in FIG. 9, the following items are set as items of the state of the own device that can be a determination target. These items are items that the first energization control execution unit of the NIC 5 determines in the process of step S103.
(1) The sleep condition 201d that caused the transition to the sleep mode
(2) Free space 202d of flash memory 66 of NIC5
(3) Number of device information processing requests held in the flash memory 66 of the NIC 5 203d
The sleep condition 201d that is the reason for the transition to the sleep mode is information indicating a control state indicating whether or not the current sleep mode is shifted by the weekly timer control that controls the energization state of each functional block according to the weekly schedule. It is an example.

In addition, the following items are set as items of the contents of the device information processing request that can be determined. The first energization control execution unit of the NIC 5 determines each of these items by referring to the contents of the device information processing request 00d shown in FIG. 7, and performs energization control based on the determination result.
(1) Sender's authority 301d
This item is for determining the authority of the sender of the data processing request. Here, based on the sender ID 01d included in the data processing request and the user information stored in advance in the flash memory 66 of the NIC 5, the first energization control execution unit of the NIC 5 determines whether the sender is a normal user. It is determined whether the user is a super user having higher authority.
(2) Immediate processing designation 302d
This item is an item to be discriminated whether or not immediate processing is designated by the immediate processing designation information 05d of the device information processing request 00d.
(3) Latest information request designation 303d
This item is an item to be discriminated whether or not the latest information acquisition designation information 06d of the device information processing request 00d specifies that the latest device information should be obtained and transmitted from the corresponding device. is there.
(4) Inclusion relationship 304d with duplicate device information
This item includes the device information specified by the target device information 04d of the device information processing request 00d and the information item 07d included in the duplicate device information that the NIC 5 has acquired and stored from other functional blocks. It is an item for which it is determined whether or not there is (“included” or “non-included”).
(5) Request type 305d
This item is an item whose contents are the contents of the request type 03d of the device information processing request 00d. That is, it is an item for which it is determined whether the device information processing request 00d is a device information transmission request or a setting request.

The power control rule illustrated in FIG. 9 is a unit that is a combination of the contents of the items 201d to 203d relating to the state of the image processing apparatus X and the contents of the items 301d to 305d relating to the contents of the device information processing request 00d according to the AND condition. For each rule (the vertical column in FIG. 9 represents a unit rule), the rule number 401d (R1, R2,...), The energization state 402d (ON / OFF) of the first sub power supply 221 and the processing to be executed 403d And are set.
Here, the following three patterns exist as combinations of the energization state 402d of the first sub power supply 221 and the processing 403d to be executed.
The first pattern is such that the first sub power supply 221 is not energized (OFF) and the received device information processing request 00d is recorded in the flash memory of the NIC 5 (indicated as “H” in the figure). is there.
Second, the first sub power supply 221 is not energized (OFF), and the duplicate device information (information in the flash memory) corresponding to the device information specified by the received device information processing request 00d is stored. This is a pattern of transmitting to the external device 31 (indicated as “I” in the figure).
The third pattern energizes the first sub power supply 221 (ON) and delivers the received device information processing request 00d to the main control unit 9 through the bus 11 (denoted as “J” in the figure). is there.
In FIG. 8, among the items in the unit rule, items whose contents are not set (the cells are blank) represent items that do not refer to the contents.
Then, the first energization control execution unit of the NIC 5 determines whether or not the condition of each unit rule is satisfied in order (R1, R2,..., Rn) in accordance with the rule number 401d, and the condition is satisfied first. Whether the first sub power source 221 is energized is determined according to the energization state 402d of the first sub power source 221 corresponding to the unit rule.
The main control unit 9 has a power control rule setting function that allows the user to set a part or all of the unit rules by controlling the operation unit 1 and the display unit 2. The power control rule set by the power control rule setting function is transmitted from the main control unit 9 to the NIC 5, and the MPU 63 of the NIC 5 stores it in the flash memory 66.

In the power supply control rule illustrated in FIG. 9, the sleep condition 201 d that is the reason for shifting to the sleep mode is the first sleep condition (weekly timer control), and the free space 201 d of the flash memory 66 of the NIC 5 is predetermined. If the size is equal to or larger than the size, the sender's authority 301d is “normal user”, and the request type 305d is “setting”, the first energization control execution unit of the NIC 5 It is determined that the received data processing request should be recorded in the flash memory 66 of the NIC 5 without energizing (rule number R1).
In other cases, the sleep condition 201d is the first sleep condition, the free space 201d of the flash memory 66 of the NIC 5 is equal to or larger than a predetermined size, and the sender's authority 301d is “ Even when the user is a “super user”, the immediate processing designation 302 d is “none”, and the request type 305 d is “setting”, the first energization control execution unit of the NIC 5 also performs the first sub power supply 221. It is determined that the received data processing request should be recorded in the flash memory 66 of the NIC 5 (rule number R2).

In other cases, the sleep condition 201d is the second sleep condition (continuation of no input state), the free space 201d of the flash memory 66 of the NIC 5 is equal to or larger than a predetermined size, and The number of device information processing requests 00d already held in the flash memory 66 of the NIC 5 is less than a predetermined number, the immediate processing designation 302d is “None”, and the request type 305d is “Setting”. In some cases, the first energization control execution unit of the NIC 5 does not energize the first sub power supply 221 and determines that the received data processing request should be recorded in the flash memory 66 of the NIC 5 (rule number R3).
In other cases, the latest information request designation 303d is “none”, the inclusion relationship 304d with the copy device information is “inclusion”, and the request type 305d is “send”. The first energization control execution unit of the NIC 5 does not energize the first sub power supply 221 (OFF), and the duplicate device corresponds to the device information specified by the received device information processing request 00d It is determined that information (information in the flash memory) should be transmitted to the external device 31 (rule number R4).
In cases other than the above, the first energization control execution unit of the NIC 5 energizes the first sub power supply 221, and determines that the received device information processing request should be delivered to the main control unit 9 (rule number R5). .

[Steps S105, S106, S107]
When the first energization control execution unit of the NIC 5 determines that energization to the first sub power source 221 is not necessary in step S104, the first energization control execution unit executes the process determined in step S104 (S105), and the process will be described later. The process proceeds to step S115. Specifically, the first energization control execution unit (MPU 63) of the NIC 5 executes one of the following two processes according to the power supply control rule shown in FIG.
One of them is a process of storing the received device information processing request 00d in the flash memory 66 of the NIC 5. That is, the MPU 63 of the NIC 5 receives the device information processing request from the external device 31 by the NIC 5 when each of the control units 6 to 9 (an example of the information holding device) is in the “no power supply state”. Processing for storing the information processing request in the flash memory 66 (an example of a request storage unit) is executed (an example of a request storage control unit).
Second, the duplicate device information (information in the flash memory) corresponding to the device information (device information specified by the target device information 04d and the information item 07d) specified in the received device information processing request 00d. Is transmitted to the external device 31.
As described above, the NIC 5 has a function of transmitting the duplicate device information stored in the flash memory 66 to the external device 31. This function is realized by the MPU 63 of the NIC 5 executing a predetermined program.
The device information processing request 00d stored in the flash memory 66 of the NIC 5 in step S105 is described later when the image processing apparatus X enters an energized state capable of executing processing corresponding to the device information processing request 00d. Processed in S114.
On the other hand, if the first energization control execution unit of the NIC 5 determines that energization to the first sub power source 221 is necessary in step S104, the first sub power supply 221 turns on the automatic changeover switch 41 through the main energization switching circuit 10 to The power source 221 is energized (S106). As a result, the main control unit 9, the display unit 2, and the image processing calculation unit 4 enter the “energized state”.
Further, the first energization control execution unit of the NIC 5 hands over the received device information processing request 00d and the state of the own device, which is the result determined in step S103, to the main control unit 9 that is in the “energized state”. (S107).

[Steps S108 and S109]
Next, the second energization control execution unit of the main control unit 9 that has received the device information processing request 00d refers to the target device information 04d of the device information processing request 00d, so that the device information processing request 00d Then, it is determined whether or not the device information processing related to the main control unit 9 is requested (S108). Note that all device information related to the main control unit 9 is stored in a memory (ROM 75 or flash memory 76) provided in the main control unit 9.
If it is determined in step S108 that the device information processing request 00d is a request for processing of device information related to the main control unit 9, the second energization control execution unit of the main control unit 9 The fifth sub power source 225 is not switched from “no power supply state” to “a power supply state” from 221. In this case, the main control unit 9 executes normal processing according to the device information processing request 00d (S109), and then shifts the processing to step S115 described later. That is, when the request type 03d of the device information processing request 00d is “transmission”, the main control unit 9 selects the information item 07d from the device information stored in the memory of the main control unit 9. Is specified and transmitted to the NIC 5, and the NIC 5 transmits it to the external device 31 through the network 30. In addition, when the request type 03d of the device information processing request 00d is “setting”, the main control unit 9 stores information from the device information stored in the flash memory 76 of the main control unit 9. The item specified by the item 07d is specified, and this is set (updated) to the content specified by the setting information 08d.
Further, in this step S109, when the device information processing request 00d that can be processed by the main control unit 9 that is in the “energized state” at this time is stored in the flash memory 66 of the NIC 5, the main control unit 9 MPU 73 also executes processing corresponding to the device information processing request 00d.
That is, in the above-described step S105, after the device information processing request is stored in the flash memory 66 (an example of the request storage unit) of the NIC 5, the main control unit 9 enters the “energized state”. In step S109, the MPU 63 of the NIC 5 controls the MPU 73 of the main control unit 9 to execute processing corresponding to the device information processing request stored in the flash memory 66 (an example of an activation waiting control unit).
More specifically, the MPU 63 of the NIC 5 selects the device information processing request 00d stored in the flash memory 66 that can be executed when the main control unit 9 is in the “energized state”. Then, the selected device information processing request 00d is delivered to the main control unit 9. Thereby, MPU73 of the main control part 9 performs the process according to the handed apparatus information processing.

[Steps S110 and S111]
On the other hand, if it is determined in step S101 that the device information processing request 00d does not require processing of device information related to the main control unit 9, the second energization control execution unit of the main control unit 9 Processing for determining the current state of the main control unit 9 is executed (S110).
For example, the second energization control execution unit of the main control unit 9 determines the free capacity of the flash memory 76 of the main control unit 9.
Further, the second energization control execution unit of the main control unit 9 includes the contents of the device information processing request 00d delivered from the NIC 5 (that is, the device information processing request 00d received during the sleep mode) and the current information processing request at that time. Necessity of energization from the second sub power supply 222 to the fifth sub power supply 225 according to a predetermined power control rule based on the state of the apparatus (including the determination result in step S103 and the determination result in step S110) (ie Then, it is determined whether the local control units 6 to 8 and the HDD 3 are energized) and the process to be executed (S111).
The second energization control execution unit of the main control unit 9 also determines items similar to the items determined by the first energization control execution unit of the NIC 5 by referring to the contents of the device information processing request 00d, and the determination Energization control is performed based on the result.

FIG. 10 illustrates an example of a power control rule in the second energization control execution unit of the main control unit 9.
The power control rule illustrated in FIG. 10 includes items similar to the power control rule of the NIC 5 illustrated in FIG. 9 as the item of the state of the own device that can be determined and the content of the device information processing request 00d. In addition, an item called a target function block 306d is set.
This item of the target functional block 306d is an item whose discrimination target is the device (part) to which the functional block belongs. Specifically, in the second energization control execution unit of the main control unit 9, the target function block 306d is the scanner control unit 6 or the scanner unit 6a based on the content of the target device information 04d of the device information processing request 00d. (Denoted as “SC” in the figure), the print control unit 7 or the print unit 7a (denoted as “PR” in the figure), or the post-processing control unit 8 or the post-processing execution units 8a to 8c ( Whether it is HDD 2 (denoted as “HD” in the figure) or not is determined.
Of the status items of the own device, the flash memory to be used is the flash memory 76 of the main control unit 9 for the free space 202d of the flash memory and the number 203d of data processing requests held in the flash memory. . Further, the unit rule, the rule number 401d, the reference order of the unit rule, and the like are the same as those of the power control rule of the NIC 5 illustrated in FIG.

In the power supply control rule illustrated in FIG. 10, the same unit rule as the rule numbers R1 to R4 illustrated in FIG. 9 is set.
Further, when the target function block 306d is the scanner control unit 6 or the scanner unit 6a when it does not correspond to the unit rules of the rule numbers R1 to R4, the second energization control execution unit of the main control unit 9 is the scanner. Only the second sub power source 222, which is the power source of the control unit 6, is energized, and it is determined that normal processing (same processing as in the normal mode) according to the device information processing request 00d should be executed (rule) Number R5).
In the case other than the above, when the target function block 306d is the print control unit 7 or the print unit 7a, the second energization control execution unit of the main control unit 9 is the power source of the print control unit 7. Only the 3-sub power supply 223 is energized, and it is determined that normal processing corresponding to the device information processing request 00d should be executed (rule number R6).
In other cases than the above, when the target function block 306d is the post-processing control unit 8 or the post-processing execution units 8a to 8c, the second energization control execution unit of the main control unit 9 is the post-processing control unit. Only the fourth sub power source 224, which is the power source of No. 8, is energized, and it is determined that normal processing corresponding to the device information processing request 00d is to be executed (rule number R7).
In the case other than the above, when the target functional block 306d is the HDD 3, the second energization control execution unit of the main control unit 9 energizes only the fifth sub power source 225 that is the power source of the HDD 3. It is determined that normal processing corresponding to the device information processing request 00d is to be executed (rule number R8).
Here, the control rules of the rule numbers R5 to R8 are information in which determination rules for determining the control units 6 to 9 (functional blocks) necessary for executing processing corresponding to the device information processing request are set. I can say that.
It should be noted that the contents of the unit rule shown in FIG. 10 can be changed and added by the power control rule setting function.

[Steps S112 and S113]
When the second energization control execution unit of the main control unit 9 determines in step S111 that energization of any of the second sub power supply 222 to the fifth sub power supply 225 is unnecessary, the process determined in step S111 is executed. (S112), and then the process proceeds to step S115 to be described later. Specifically, the second energization control execution unit of the main control unit 9 executes one of the following two processes according to the power supply control rules (R1 to R4) shown in FIG.
One of them is a process of storing the received device information processing request 00d in the flash memory 76 of the main control unit 9. That is, the second energization control execution unit of the main control unit 9 receives a device information processing request from the external device 31 by the NIC 5 when each of the local control units 6 to 8 (an example of the information holding device) is in a “no power supply state”. When received, the device information processing request is stored in the flash memory 76 (an example of a request storage unit) (an example of a request storage control unit).
Second, the duplicate device information (information in the flash memory) corresponding to the device information (device information specified by the target device information 04d and the information item 07d) specified in the received device information processing request 00d. Is transmitted to the external device 31.
When the device information processing request 00d stored in the flash memory 76 of the main control unit 9 in step S112 is in an energized state in which the image processing apparatus X can execute processing according to the device information processing request 00d, Processing is performed in step S114 described later.
On the other hand, if the second energization control execution unit of the main control unit 9 determines in step S111 that energization of any of the second sub power supply 222 to the fifth sub power supply 225 is necessary, any of the automatic changeover switches 42 to 45. By turning ON, the second sub power supply 222 supplies power to the fifth sub power supply 225 that has been determined to be energized (S113). As a result, among the local control units 6 to 8 and the HDD 3, only those necessary for executing normal processing according to the device information processing request 00d are in the “energized state”.

[Step S114]
Next, the local controllers 6 to 8 that are in the “energized state” execute normal processing according to the device information processing request 00d (S114), and then shift the processing to step S115 described later. That is, when the request type 03d of the device information processing request 00d is “transmission”, the local control units 6 to 8 that are in the “energized state” include the device information stored in the memory. Then, the information specified in the information item 07d is specified, and the specified device information is transmitted to the NIC 5 through the bus 11. Further, the NIC 5 transmits the device information acquired from the local control units 6 to 8 to the external device 31 through the network 30. As described above, the NIC 5 acquires device information from the functional block that has been switched from the “non-energized state” to the “energized state” by the first energization control execution unit of the NIC 5 or the second energization control execution unit of the main control unit 9. The device information has a function of transmitting the device information to the external device 31.
On the other hand, when the request type 03d of the device information processing request 00d is “setting”, the local control units 6 to 8 that are in the “energized state” include the device information stored in the memory. Then, the information specified in the information item 07d is specified, and this is set (updated) to the content specified in the setting information 08d.
Further, in this step S114, the device information processing request 00d that can be processed by the functional block that is in the “energized state” at this point is either the flash memory 66 of the NIC 5 or the flash memory 76 of the main control unit 9. Is stored, the process corresponding to the device information processing request 00d is also executed.
That is, after the device information processing request is stored in the flash memory 66 of the NIC 5 or the flash memory 76 of the main control unit 9 (an example of a request storage unit) in the above-described step S105 or S112, the main control unit 9 or each local control. When the units 6 to 8 (an example of the information holding device) enter the “energized state”, the MPU 63 of the NIC 5 or the MPU 73 of the main control unit 9 is stored in the flash memories 66 and 76 in this step S114. Control is performed so that the processing corresponding to the device information processing request is executed by the MPU 73 of the control units 6 to 9 (an example of an activation wait control unit).
More specifically, the MPU 63 of the NIC 5 or the MPU 73 of the main control unit 9 is a subordinate control unit (the main control unit 9 or each local control unit in the device information processing request 00d stored in the flash memory 66 or 76. 6 to 8) select an item that can be executed when the “energized state” is selected, and send the selected device information processing request 00d to the lower-level control unit (the main control unit 9 or each local control unit 6). To 8). As a result, the MPU 73 of the lower control units 6 to 8 executes a process according to the handed device information processing.
However, when the setting request and the transmission request are mixed in the device information processing request (including both the newly received one and the one stored in the flash memory) processed in step S114, Processing corresponding to the setting request is executed, and thereafter processing corresponding to the transmission request is executed. Thereby, the device information transmitted to the external device 31 in response to the setting request becomes the latest information.

[Step S115]
Finally, in step S115, out of the device information processing request 00d stored in either the flash memory 66 of the NIC 5 or the flash memory 76 of the main control unit 9, it was subjected to normal processing in steps S109 and S114. If there is something, the MPU 63 of the NIC 5 or the MPU 73 of the main control unit 9 erases it from the flash memories 66 and 76 (S115), and then ends the energization control process S4.
The process of steps S100 to S115 described above is an energization control process S4.

The following can be said from the contents of the processing shown in FIG.
First, the first energization control unit of the NIC 5 and the second energization control unit of the main control unit 9 are controlled by the NIC 5 when the respective control units 6 to 9 (functional blocks) are in the “no energization state” (during sleep mode). It can be said that it determines the control units 6 to 9 (functional blocks) necessary for executing processing (setting or transmission of device information) corresponding to the device information processing request received from the external device 31 (necessary functions). An example of block discrimination means).
For example, the first energization control unit of the NIC 5 processes the received device information processing request through the determination process executed in step S101 and the determination process executed in step S104 based on the control rule of the rule number R4 (FIG. 9). Therefore, it is determined whether or not at least the main control unit 9 is necessary. As described above, the NIC 5 is configured as a communication unit that communicates with an external device and also serves as a unit that determines a functional block necessary for processing the received device information processing request.
Similarly, the second energization control unit of the main control unit 9 receives the received device through the determination process executed in step S108 and the determination process executed in step S111 based on the control rules (FIG. 10) of the rule heads R5 to R8. In order to process the information processing request, it is determined which one of the local control units 6 to 8 is necessary or none.
Then, the first energization control unit of the NIC 5 and the second energization control unit of the main control unit 9 change only the control units (functional blocks) determined to be necessary in steps S106 and S113 to the automatic changeover switches 41 to 49 (energization switching). (An example of means) is automatically switched to the “energized state” by controlling (an example of a function block automatic activation means). As described above, the NIC 5 serves as both a communication unit and a unit that automatically switches the main control unit 9 to the “energized state”.

Further, the first energization control unit of the NIC 5 and the second energization control unit of the main control unit 9 request device information processing from the external device 31 when each of the control units 6 to 9 (functional blocks) is in the “no energization state”. Is received, whether or not energization is required for each of the control units 6 to 9 is determined based on the control rules shown in FIGS. 9 and 10 (an example of an energization necessity determination unit).
Further, the first energization control unit of the NIC 5 and the second energization control unit of the main control unit 9 perform switching control of which of the following two processes is executed according to the determination result of the necessity of energization. (Example of request storage control means)
One is that the processing executed in step S105 or S112, that is, the received device information processing request is not immediately processed, but stored in the flash memory 66 of the NIC 5 or the flash memory 76 of the main control unit 9. Processing (denoted as “H” in the figure).
Second, the processing executed in steps S106 to S109 or steps S113 to S114, that is, the processing corresponding to the received device information processing request is performed only on the control unit (functional block) necessary for the processing, that is, step. This is a process (denoted as “K” in the figure) that is executed after energizing only the control unit determined to be energized in S104 and S111.

[Steps S5 and S6]
On the other hand, after the web page transmission process (S3) to the external device 31 or the energization control process (S4) at the time of device information processing request is executed, the NIC 5 receives new data from the external device 31 through the network 30. Is determined (S5). Here, when the NIC 5 receives new data from the external device 31 through the network 30, the processing is returned to the above-described step S2, and the processing after the above-described step S2 is performed on the received data.
On the other hand, if the NIC 5 has not received new data, the image processing apparatus X shifts to a sleep mode in which the power supply to each functional block is interrupted in accordance with the basic operation for stopping the power supply described above (S6). Then, the process returns to step S1 described above.
That is, the first energization control unit of the NIC 5 and the second energization control unit of the main control unit 9 respond to the device information processing request received by the NIC 5 with the control unit that has been “energized” in steps S106 and S113. In step S6, the automatic changeover switches 41 to 49 (an example of the energization switching unit) are controlled to switch back to the original “no energization state” (an example of the function block automatic stop unit). .
As described above, the image processing apparatus X controls whether or not to individually energize each of the plurality of functional blocks 3, 6-9, 6a, 7a, 8a-8c divided according to the function. I do. When the image processing apparatus X is in the sleep mode (power saving state), the minimum necessary functional block is determined according to the content of the device information processing request 00d received from the external apparatus 31 through the NIC 5 and the state of the own apparatus. Control is performed so that only the “energized state” is obtained. As a result, power consumption can be suppressed as compared with the prior art.

Further, the image processing apparatus X has the following characteristics by performing energization control according to the control rules illustrated in FIGS. 9 and 10.
For example, both unit rules of rule numbers R2 and R3, which require that the immediate processing designation 302d is “none”, are rules for determining that the data processing is not a request to be executed immediately.
Therefore, the first energization control execution unit of the NIC 5 and the second energization control execution unit of the main control unit 9 (hereinafter collectively referred to as the energization control execution unit) follow the unit rules of the rule numbers R2 and R3, When it is determined that the content of the device information processing request 00d received by the NIC 5 is not a request that should be executed immediately, the device information processing request is sent to the flash memory 66 of the NIC 5 or the flash memory of the main control unit 9. The process (S105, S112) memorize | stored in 76 is performed.

Thereafter, a new device information processing request 00d is received, and a condition that a predetermined number or more of listening information processing requests 00d are stored in the flash memory 66 of the NIC 5 and the flash memory 76 of the main control unit 9, and the device When the condition that the remaining capacity of the flash memory storing the information processing request 00d is less than the predetermined size is satisfied, the unit rules of the rule numbers R2 and R3 are not applied, and the unit rule of the rule number R5 is applied. The When the unit rule of the rule number R5 is applied, the energization control execution unit changes the function block corresponding to the data processing request stored in the flash memories 66 and 76 from the “no energization state” to the “energization present state”. (S106, S113), and the functional block in the “energized state” executes processing corresponding to the device information processing request 00d (S114).
As described above, the energization control execution unit responds to a case where a predetermined condition (energization start condition) is satisfied after a plurality of device information processing requests 00d are received and stored in the storage unit during the sleep mode. The function block to be switched is switched from “no power supply state” to “power supply state”. That is, the energization control execution unit controls which of the “non-energized” functional blocks is set to the “energized” state by controlling the automatic changeover switches 41 to 49. As a result, the plurality of device information processing requests 00d stored in the storage unit are processed together, so that the frequency of energization of the functional blocks is reduced and the power consumption of the image processing apparatus X is suppressed.
In addition to the control rules illustrated in FIGS. 9 and 10, as a condition for starting the process corresponding to the device information processing request 00d stored in the flash memories 66 and 76 by the energization control execution unit, for example, the flash memory The condition that the total data size of the device information processing request stored in 66 and 76 exceeds a predetermined size, or a predetermined time after the first device information processing request 00d is stored in the flash memories 66 and 76 There may be a condition that the period has passed.

Further, since the energization control unit can change the content of energization control according to the authority 301d of the sender of the device information processing request 00d, flexible energization control according to the authority of the user is possible.
Further, the energization control unit determines the functional block until the image processing apparatus X can execute processing according to the content of the device information processing request 00d received through the NIC 5 according to the setting content of the control rule. It is possible to control to switch from the upper one to the lower one in the “energized state” in order.
For example, when the device information to be processed in the device information processing request 00d is device information related to the main control unit 9, the energization control unit switches only the main control unit 9 in the highest hierarchy to the “energized state”. The main control unit 9 executes normal processing according to the device information processing request 00d.
On the other hand, when the device information to be processed by the device information processing request 00d is device information related to the print control unit 7, the energization control unit starts from the main control unit 9 at the highest level to the print control unit at the lower level. 7 is switched to the “energized state”, and the print control unit 7 executes normal processing according to the device information processing request 00d. By such control, only the minimum necessary functional blocks can be switched from the “non-energized state” to the “energized state”, and power consumption can be minimized.

By the way, as shown in the power supply system diagram in FIG. 4, in the first embodiment of the connection relation of the power supply to each functional block, the control means for switching the energization state of each functional block by the hierarchical energization control processing is the NIC 5 The first energization control execution unit and the second energization control execution units of the control units 6 to 9 are configured to be distributed.
However, the NIC 5 that is energized even during the sleep mode is configured to perform the hierarchical energization control process by performing energization control on all the functional blocks 3, 6-9, 7a, 8a-8c. Examples are also possible.
FIG. 11 is a power system diagram showing a second embodiment of the power connection relationship in the image processing apparatus X. In the image processing apparatus X having the configuration of the second embodiment, the NIC 5 performs the hierarchical energization control process.
As shown in FIG. 11, the NIC 5 outputs control signals individually to all the automatic changeover switches 41 to 49 through the energization switching circuit 10 a corresponding to the main energization switching circuit 10 shown in FIG. 4.
In the case of the second embodiment, the MPU 63 of the NIC 5 executes a predetermined control program, thereby performing energization control from the first sub power supply 221 to the fifth sub power supply 225 according to the control rules shown in FIGS. Do. In this case, the NIC 5 also serves as all the means for executing energization control for each functional block.
Such a configuration is also one embodiment of the present invention.

  The present invention can be used for an image processing apparatus.

1 is a block diagram illustrating a schematic configuration of an image processing apparatus X according to an embodiment of the present invention. 1 is a block diagram illustrating a schematic configuration of a NIC included in an image processing apparatus X. FIG. FIG. 2 is a block diagram illustrating a schematic configuration of a control unit included in the image processing apparatus X. FIG. 3 is a power supply system diagram illustrating a first embodiment of a power supply connection relationship in the image processing apparatus. 6 is a flowchart showing a procedure of sleep mode cancellation processing in accordance with data reception of the image processing apparatus X. 6 is a flowchart showing a procedure of sleep mode cancellation processing when a device information processing request is received by the image processing apparatus X. The figure showing an example of the data structure of an apparatus information processing request. The figure which represented typically the weekly schedule of the weekly timer control in the image processing apparatus X. 4 is a diagram illustrating an example of a power control rule of a NIC in the image processing apparatus X. FIG. 3 is a diagram illustrating an example of a power control rule of a control unit in the image processing apparatus X. FIG. FIG. 10 is a power supply system diagram illustrating a second embodiment of a power connection relationship in the image processing apparatus X.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Operation part 2 ... Display part 3 ... Hard disk drive 4 ... Image processing calculating part 5 ... Network interface card 6 ... Scanner control part 6a ... Scanner part 7 ... Print control part 7a ... Print part 8 ... Post-processing control part 8a ... Shifter 8b ... Puncher 8c ... Stapler 9 ... Main controller 10 ... Main energization switching circuit 10a ... Energization switching circuit 11 ... Bus 21 ... Main power source 22 (221-229) ... Sub power source 30 ... Network 31 ... External device 40 ... Manual changeover switch 41-49 ... automatic changeover switches 61, 71 ... bus connectors 62, 72 ... bus control units 63, 73 ... microprocessor units 64, 74 ... memory control units 65, 75 ... ROM
66, 76 ... Flash memory 67 ... Network control unit 68 ... Network connector 69 ... Timekeeping unit 77 ... I / O ports S1, S2,...

Claims (5)

A communication unit configured to communicate with an external device; the communication unit receives a device information processing request for requesting a predetermined process for device information, which is information about the device included in the image processing device, from the external device; An image processing apparatus that executes processing corresponding to a request,
Energization switching means for switching whether or not to individually energize each of a plurality of functional blocks each of which is a component or a set of components divided according to each function;
Necessary functional block discrimination for discriminating the functional block necessary for executing processing corresponding to the device information processing request received from the external device by the communication means when each of the functional blocks is in a non-energized state Means,
Only the function block determined to be necessary by the necessary function block determining means, the function block automatic starting means for switching to the energized state by controlling the energization switching means,
The function block that has been energized by the function block automatic activation unit is energized by controlling the energization switching unit after processing corresponding to the device information processing request received by the communication unit is executed. Function block automatic stop means to switch to the no state,
An image processing apparatus comprising: Energization necessity determining means for determining whether energization is required for the functional block when the device information processing request is received from the external device by the communication means when each of the functional blocks is in a non-energized state;
Depending on the determination result of the energization necessity determination means, the device information processing request received by the communication means is stored in a predetermined request storage means, or the processing corresponding thereto is automatically processed by the function block. Request storage control means for controlling whether the function block is executed after being energized by the activation means;
An activation wait control means for controlling the processing corresponding to the device information processing request stored in the request storage means to be executed when the functional block necessary for this is in an energized state;
The image processing apparatus according to claim 1, further comprising:   The energization necessity determining unit is provided in the image processing apparatus, and includes a control state of a timer control unit that controls an energization state of the functional block according to a predetermined time schedule, and an empty capacity of the request storage unit. The image processing apparatus according to claim 2, wherein the necessity of energizing the functional block is determined based on one or both of the number of device information processing requests stored in the request storage unit.   When the communication unit receives the device information processing request from the external device when each of the functional blocks is in a non-energized state, the communication unit does not wait for execution of processing corresponding to the device information processing request. The image processing apparatus according to claim 1, further comprising an acceptance completion response unit that makes a request acceptance completion response to the external apparatus that is the transmission source of the information processing request.   The image processing apparatus according to claim 1, wherein the communication unit is configured to serve as the necessary function block determination unit and the function block automatic activation unit.

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