US20130339774A1 - Image forming apparatus and power management method thereof - Google Patents
Image forming apparatus and power management method thereof Download PDFInfo
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- US20130339774A1 US20130339774A1 US13/972,357 US201313972357A US2013339774A1 US 20130339774 A1 US20130339774 A1 US 20130339774A1 US 201313972357 A US201313972357 A US 201313972357A US 2013339774 A1 US2013339774 A1 US 2013339774A1
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- image forming
- save mode
- power save
- forming apparatus
- power
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3209—Monitoring remote activity, e.g. over telephone lines or network connections
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3284—Power saving in printer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00885—Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00885—Power supply means, e.g. arrangements for the control of power supply to the apparatus or components thereof
- H04N1/00888—Control thereof
- H04N1/00896—Control thereof using a low-power mode, e.g. standby
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0037—Topological details of the connection
- H04N2201/0041—Point to point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0048—Type of connection
- H04N2201/0049—By wire, cable or the like
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0048—Type of connection
- H04N2201/0055—By radio
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0072—Detecting the status of a connected apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0074—Arrangements for the control of a still picture apparatus by the connected apparatus
- H04N2201/0075—Arrangements for the control of a still picture apparatus by the connected apparatus by a user operated remote control device, e.g. receiving instructions from a user via a computer terminal or mobile telephone handset
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0094—Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Definitions
- Apparatuses and methods consistent with the exemplary embodiments relate to an image forming apparatus and a power management method thereof, and more particularly, to an image forming apparatus and a power management method thereof which applies a universal plug and play (UPnP) protocol to a power save mode of the image forming apparatus.
- UFP universal plug and play
- UPN universal plug and play
- An image forming apparatus may be utilized as a control device by using the UPnP protocol.
- the image forming apparatus forms an image on a document.
- the image forming apparatus may include a printer, a photocopier, a facsimile, or a multi-function device which has at least two functions.
- the image forming apparatus has a power save mode in which power supplied to some components is cut off to reduce power consumption when the image forming apparatus does not perform, say, a print operation during a preset standby time.
- the image forming apparatus Upon a reception of a request for a print job while in the power save mode, the image forming apparatus performs the print job and again enters the power save mode only after a lapse of the preset standby time from the completion of the print job. Thus, unnecessary power consumption occurs during the standby time.
- the image forming apparatus may unnecessarily consume power until the standby time elapses after the completion of printing the received fax data.
- one or more exemplary embodiments provide an image forming apparatus and a power management method thereof which categorizes a power save mode of the image forming apparatus supporting a universal plug and play (UPnP) using a low power protocol of the UPnP protocol, and reduces unnecessary power consumption and improves usability.
- UPF universal plug and play
- a power management method of an image forming apparatus which communicates with at least one terminal device supporting a universal plug and play (UPnP) protocol, the method including: setting power save mode information which includes a plurality of levels corresponding to the UPnP protocol to the image forming apparatus; storing the set power save mode information; receiving a command to enter a first power save mode among the plurality of levels from the terminal device; comparing the received command to enter the first power save mode with the stored power save mode information; and entering a power save mode by the image forming apparatus corresponding to the received command to enter the first power save mode.
- UPF universal plug and play
- the method may further include identifying a current level of the power save mode upon a reception of at least one job request from the image forming apparatus; and converting the power save mode to a normal mode and performing the job.
- the at least one job may include at least one of a fax reception from the outside, a reception of print data, a print job for print data stored in a storage unit of the image forming apparatus, a document copy job, a fax transmission job and a document scan job.
- the image forming apparatus may return to the power save mode according to the level of the power save mode.
- the returning to the power save mode may include determining whether a standby time which is preset depending on the level of the power save mode elapses; and returning to the power save mode if the standby time elapses.
- the entering the power save mode may include selectively supplying power to the image forming apparatus depending on the level of the power save mode.
- the method may further include receiving a command to turn off the power save mode from the terminal device, wherein the image forming apparatus may be converted into the normal mode according to the command to turn off the power save mode.
- the method may further include receiving a user interface (UI) input of the image forming apparatus, wherein the image forming apparatus may be converted into a normal mode corresponding to the input.
- UI user interface
- the plurality of levels of the power save mode may be classified according to at least one of an operation at a time of entering a power save mode, an operation at a time of requesting a job and an operation after a completion of the job, or any combination thereof.
- an image forming apparatus which communicates with at least one terminal device supporting a universal plug and play (UPnP) protocol
- the image forming apparatus including: a power supply unit which supplies power to the image forming apparatus; an operation panel which sets information on a power save mode having a plurality of levels corresponding to the UPnP protocol to the image forming apparatus; a storage unit which stores therein the set information of the power save mode; a communication unit which communicates with the terminal device according to the UPnP protocol and receives print data from a host device or transmits scan data to the host device; a fax unit which transmits a fax and receives a fax from/to a fax machine; and a controller which controls the power supply unit for the image forming apparatus to enter a power save mode upon a reception of a command to enter a first power save mode among the plurality of levels from the terminal device through the communication unit.
- a power supply unit which supplies power to the image forming apparatus
- an operation panel which sets information on a power save mode
- the image forming apparatus may further include an image forming unit which forms an image, wherein the controller may identify the current level of the power save mode upon a reception of at least one job request from the image forming apparatus, control the power supply unit for the image forming apparatus to be converted into a normal mode from the power save mode and control the image forming unit to perform the job.
- the at least one job may include at least one of a fax reception from a fax machine, a reception of print data from the host device, a print job for print data stored in the storage unit, a document print job, a fax transmission job and a document scan job.
- the controller may control the power supply unit for the image forming apparatus to return to the power save mode according to the level of the power save mode upon a completion of the at least one job.
- the controller may determine whether a standby time which is preset depending on the level of the power save mode elapses, and control the power supply unit for the image forming apparatus to return to the power save mode if the standby time elapses.
- the controller may control the power supply unit to selectively supply power to the image forming apparatus depending on the level of the power save mode.
- the communication unit may receive a command from the terminal device to turn off the power save mode, and the controller may control the power supply unit for the image forming apparatus to be converted into a normal mode from the power save mode according to the command to turn off the power save mode.
- the operation panel may receive a user interface (UI) input, and the controller may control the power supply unit for the image forming apparatus to be converted into the normal mode upon a reception of the UI input.
- UI user interface
- the plurality of levels of the power save mode may be categorized according to at least one of an operation at a time of entering the power save mode, an operation at a time of requesting a job and an operation after a completion of the job.
- FIG. 1 is a block diagram of an image forming apparatus according to an exemplary embodiment
- FIG. 2 sequentially illustrates processing of entering and returning to a power save mode according to the exemplary embodiment
- FIGS. 3A to 5B are flowcharts of a power management method according to the exemplary embodiment.
- FIG. 1 is a block diagram of an image forming apparatus 100 and a terminal device 200 according to an exemplary embodiment of the present invention.
- the image forming apparatus 100 and the terminal device 200 support a universal plug and play (UPnP) protocol and communicate with each other in a wired/wireless network.
- UFP universal plug and play
- the terminal device 200 may include a portable terminal as a control point outputting a control signal using the UPnP protocol.
- the terminal device 200 may include a low power control point which outputs a control signal under a low power protocol of the UPnP protocol.
- the image forming apparatus 100 is a control device operating by the control signal of the control point.
- the image forming apparatus 100 may include a printer, a photocopier, a scanner, a facsimile or a multi-function printer (MFP) having at least two functions.
- the image forming apparatus 100 may include a low power UPnP device which provides a power save mode under the low power protocol of the UPnP protocol.
- the image forming apparatus 100 includes a first communication unit 110 , a first user input unit 120 , a first display unit 130 , a first storage unit 140 , an image forming unit 150 , an image scanner 160 , a fax unit 170 , a power supply unit 180 and a first controller 190 .
- the first communication unit 110 performs a data communication with the terminal device 200 , a host device and an external device including a server.
- the first communication unit 110 receives a control signal according to the UPnP protocol from the control point, i.e., the terminal device 200 .
- the received control signal is a low power control signal of the UPnP protocol.
- the received control signal includes a GoToSleep message and a WakeUp message to turn off the power save mode with respect to the control device, i.e., the image forming apparatus 100 .
- the image forming apparatus 100 has a normal mode (hereinafter, to be also called ready mode) and a plurality of power save modes (hereinafter, to be also called sleep modes) corresponding to a plurality of levels as a power management mode.
- a normal mode hereinafter, to be also called ready mode
- a plurality of power save modes hereinafter, to be also called sleep modes
- a power state is active and power supply is set as on state to normally supply power to elements of the image forming apparatus 100 , e.g., both a user interface (UI) module and a printer module.
- the UI module may include the first user input unit 120 and the first display unit 130 (to be described later) or an operation panel (OPE).
- the printer module includes the image forming unit 150 which drives an engine and forms an image according to a print command.
- the image forming apparatus 100 Upon a reception of the GoToSleep message from the terminal device 200 through the first communication unit 110 in the normal mode, the image forming apparatus 100 enters the power save mode in which power supplied to some elements of the image forming apparatus 100 , e.g., the UI module and the printer module is selectively cut off.
- the GoToSleep message includes a command to enter the power save mode corresponding to one of a plurality of levels as in Table 1 below.
- the power save mode may be categorized as three levels as in Table 1 below. As an example of the present invention, the power save mode is categorized as three phases of a level 1 (transparent sleep), a level 2 (deep sleep online) and a level 3 (deep sleep offline).
- the plurality of power save mode levels in Table 1 may use a UPnP low power architecture as a power management protocol defined in the UPnP.
- the image forming apparatus 100 may further have a disconnect mode in which connection for power supply to the image forming apparatus 100 is physically disconnected.
- Active Normal UI Module ON UI Module: ON UI Module: Sleep Printer Module: Printer Module: after lapse of standby ON ON time Printer Module: Sleep after lapse of standby time Transparent Level 1 UI Module: UI Module: ON UI Module: Sleep Sleep Sleep Printer Module: after lapse of standby Printer Module: ON time Sleep Printer Module: Sleep after lapse of standby time DeepSleep Level 2 UI Module: UI Module: ON UI Module: Sleep Online Sleep Printer Module: immediately Printer Module: ON Printer Module: Sleep Sleep immediately DeepSleep Level 3 UI Module: UI Module: Sleep UI Module: maintain Offline Sleep Printer Module: Sleep state Printer Module: ON Printer Module: Sleep Sleep immediately
- the power save mode of the image forming apparatus 100 is set to selectively cut off power to elements of the image forming apparatus 100 , e.g., the UI module and the printer module according to the operation at the time of entering the power save mode, the operation at the request of a print job and operation after a completion of the print job.
- the image forming apparatus 100 returns to the power save mode at the level 1 in which power supplied to both the UI module and the printer module is cut off after the lapse of the preset standby time.
- the image forming apparatus 100 returns to the power save mode at the level 3 in which the power supplied to the printer module is cut off and the UI module maintains a power-off state.
- the image forming apparatus 100 returns to the power save mode at the level 1 in which power supplied to the UI module and the printer module is cut off after elapse of preset standby time.
- power supplied to other elements of the image forming apparatus 100 e.g., a scan module including the image scanner 160
- the UI module and the printer module may be cut off in the power save mode and supplied again in the normal mode.
- the first communication unit 110 which communicates with the terminal device 200 and the fax unit 170 which receives a fax from the outside may continue to receive power even at the time of entering the power save mode.
- the normal mode is set for the image forming apparatus 100 to enter the power save mode after a preset standby time elapses without performing the print job.
- the power save mode is preset as one of the level 1, level 2 and level 3 in Table 1 and stored in the first storage unit 140 .
- Information on the standby time for entering the power save mode is preset and stored in the first storage unit 140 .
- the first communication unit 110 transmits power state information of the image forming apparatus 100 to the control point, i.e., the terminal device 200 .
- the first communication unit 110 may transmit the power state information to the terminal device 200 upon an occurrence of an event such as conversion of a power mode or on a regular basis.
- the first communication unit 110 may receive a Wake Up signal including a command to enter the normal mode from the terminal device 200 while the image forming apparatus 100 is in the power save mode. Upon a reception of the Wake Up signal, the image forming apparatus 100 turns into the normal mode from the power save mode, and the first communication unit 110 notifies the terminal device 200 of the normal mode of the image forming apparatus 100 .
- the first communication unit 110 receives print data in a predetermined print language (e.g., Printer Command Language (PCL) or Post Script(PS)) from an external PC such as the host device (including a server).
- a predetermined print language e.g., Printer Command Language (PCL) or Post Script(PS)
- PCL Printer Command Language
- PS Post Script
- the first communication unit 110 may include a wired/wireless network communication module which is connected with the terminal device 200 , or the external device such as the host device by a local connection or in a network by a predetermined protocol, or an interface connected to a portable storage medium such as a USB memory (e.g., USB port).
- a wired/wireless network communication module which is connected with the terminal device 200 , or the external device such as the host device by a local connection or in a network by a predetermined protocol, or an interface connected to a portable storage medium such as a USB memory (e.g., USB port).
- the first communication unit 110 may perform a scan to host function or a scan to server function to transmit a scan image to the outside such as the host device (including a server) by a predetermined protocol or perform a scan to email function to transmit the scan image to the outside or perform a scan to USB function to store the scan image in a USB memory.
- the data which are received from the outside through the first communication unit 110 are stored in the first storage unit 140 .
- the first user input unit 120 receives a user's command.
- the user input unit 120 may include an input button (hereinafter, to be also called “hard key”) provided in the image forming apparatus 100 or a graphic user interface(hereinafter, to be also called “UI”) which is generated by an execution of a predetermined application and displayed on the first display unit 130 to receive a user's input by touch.
- an input button hereinafter, to be also called “hard key”
- UI graphic user interface
- a user may perform a log-in process inputting an ID and a password assigned for each user account through the first user input unit 120 .
- the log-in process includes an administrator log-in process in which setting and change of all of the environments of the image forming apparatus 100 is available without an additional access limit. If a user log-in process or an administrator log-in process is performed, the image forming apparatus 100 identifies and permits a user. According to the exemplary embodiment, a user includes an administrator.
- the first display unit 130 displays thereon a setting and operation status of the image forming apparatus 100 .
- the first display unit 130 may display thereon a UI screen to receive various commands from a user.
- the first display unit 130 may include a liquid crystal display (LCD), a driver (not shown) to drive the LCD and a touch panel (hereinafter, to be also called “touch screen” or “touch pad”) to recognize a user's touch.
- LCD liquid crystal display
- driver not shown
- touch panel hereinafter, to be also called “touch screen” or “touch pad”
- the first user input unit 120 may include an icon to be selected by a user through the touch panel of the first display unit 130 .
- the first user input unit 120 and the first display unit 130 may be provided as a single configuration rather than separate configurations.
- the single configuration of the first user input unit 120 and the first display unit 130 is also called an operation panel (OPE).
- OPE operation panel
- the first display unit 130 may include a local display unit which is provided in the image forming apparatus 100 and a remote display unit which is provided in the host device connected to the image forming apparatus 100 through the first communication unit 110 .
- a remote user interface is selected as the first user input unit 120 displayed on the remote display unit.
- a user's command is then received from the host device connected to the image forming apparatus 100 through the first communication unit 110 .
- the first storage unit 140 stores therein various print data for a print job, fax data for a fax transmission, image data scanned by the image scanner 160 , data received from the outside connected through the first communication unit 110 , various setting information of the image forming apparatus 100 through the first user input unit 120 , user registration information set for each user account, user certification information, usage authorization information, etc.
- the first storage unit 140 of the image forming apparatus 100 may further store therein information of the power management modes in Table 1 and information of the standby time applicable to each of the power management modes.
- the first storage unit 140 includes an internal storage medium such as an HDD, or an external or portable storage medium such as a USB memory, a memory card (memory stick, CF card, and a MMC), and a memory card slot.
- an internal storage medium such as an HDD
- an external or portable storage medium such as a USB memory, a memory card (memory stick, CF card, and a MMC), and a memory card slot.
- the image forming unit 150 forms an image on paper and performs a print job according to a print command.
- the print job includes a print job for received fax data, a print job to copy a scanned document, and a print job for print data received from the outside through the host device including a server or print data stored in an inside (hard disk drive) or outside (USB memory stick) of the image forming apparatus 100 .
- the print job for the print data stored in the USB memory is a direct print.
- the data which are stored in the USB memory or the memory card may be retransmitted to the outside through the first communication unit 110 as well as being printed.
- the image scanner 160 scans a target document and generates scan data.
- the target document may include a document, a photo, a film, etc.
- the image scanner 160 may include a photo converter such as CCD and CIS and an image processor which generates an image from a document by using a signal output from the photo converter.
- the image scanner 160 may further include a scan motor to drive the photo converter and the image processor, and a guide.
- the scan data which are scanned by the image scanner 160 may be changed into a fax signal and transmitted to an external fax machine 201 by the fax unit 170 .
- the fax unit 170 may include a fax communication module (e.g., modem) which converts image data generated by the image scanner 160 into a fax signal and transmits the fax signal to the external fax machine 201 (including a multi-function printer having a fax function) by using a public switched telephone network (PSTN) or receives a fax signal from the external fax machine 201 .
- a fax communication module e.g., modem
- PSTN public switched telephone network
- the fax data which are received through the fax unit 170 are stored in the first storage unit 140 .
- the power supply unit 180 supplies power to the image forming apparatus 100 according to the power mode.
- the power supply unit 180 may selectively supply power to some elements of the image forming apparatus 100 (e.g., UI module) to correspond to the level of the power save mode according to a control of the first controller 190 .
- the first controller 190 controls the image forming apparatus 100 as a whole.
- the first controller 190 receives a message including a command to convert into the power mode from the terminal device 200 through the first communication unit 110 , and converts into the power mode of the image forming apparatus 100 according to the received command.
- the first controller 190 may include a UPnP stack to process relevant operations of the UPnP protocol, a power management module for a management of power, and an event handler to handle an event such as conversion of the power mode or a print command.
- the first controller 190 controls the first communication unit 110 to notify the terminal device 200 of the power mode status information of the image forming apparatus 100 .
- the first controller 190 may control the first communication unit 110 to transmit the power mode status information to the terminal device 200 upon an occurrence of the event such as the conversion of the power mode or at a preset period.
- the first controller 190 Upon a reception of a request for a print job while in the power save mode, the first controller 190 identifies the current level of the power save mode, and converts the power save mode into the normal mode and supplies power to the elements of the image forming apparatus 100 .
- the first controller 190 may selectively supply power to the elements of the image forming apparatus 100 .
- the first controller 190 supplies power to both the UI module (operation panel) and the printer module (image forming unit 150 ). If the identified module is the level 3, the first controller 190 may cut off power supplied to the UI module (operation panel) and supply power only to the printer module (image forming unit 150 ).
- the first controller 190 controls the image forming unit 150 to perform such job as a print job when the image forming apparatus 100 converts into the normal mode.
- the image forming apparatus 100 returns to the power save mode.
- the level of the returned power save mode becomes a level of the power save mode which was set before the reception of the job request.
- the first controller 190 may selectively apply the standby time according to the identified level of the power save mode in returning to the power save mode.
- the first controller 190 cuts off power supplied to the UI module (operation panel) and the printer module (image forming unit 150 ) in the event that the preset standby time elapses. If the identified power save mode is the level 2, the first controller 190 cuts off power supplied to the UI module (operation panel) and the printer module (image forming unit 150 ) upon the completion of the job without application of the standby time. If the identified power save mode is the level 3, the first controller 190 cuts off power supplied to the printer module (image forming unit 150 ) upon the completion of the job without application of the standby time, and has the UI module (operation panel) maintain the power-off state.
- the image forming apparatus 100 categorizes the power save mode into the levels 1 to 3, selectively supplies power to the elements of the image forming apparatus 100 upon a reception of the job request in the power save mode, and returns to the power save mode immediately after the completion of the job without application of the standby time to thereby reduce unnecessary power consumption during the standby time.
- the terminal device 200 includes a second communication unit 210 , a second user input unit 220 , a second display unit 230 , a second storage unit 240 and a second controller 290 .
- the second communication unit 210 performs a data communication with the terminal device 200 .
- the second communication unit 210 transmits a GoToSleep message and a Wake Up message to turn off the power save mode as a low power control signal under the UPnP protocol to a control device, i.e., the image forming apparatus 100 and receives power state information from the image forming apparatus 100 by a user's manipulation.
- the second communication unit 210 may receive the power state signal from the image forming apparatus 100 upon an occurrence of an event such as a conversion of a power mode or on a regular basis.
- the second user input unit 220 receives a user's command.
- the received command may include the GoToSleep message or a command to turn off the power save mode with respect to the image forming apparatus 100 .
- the second user input unit 220 may include an input button (hereinafter, to be also called “hard key”) provided in the terminal device 200 or a graphic user interface (hereinafter, to be also called “UI”) which is generated by an execution of a program such as an application and displayed on the second display unit 230 to receive a user's input by touch.
- UI graphic user interface
- the second display unit 230 may display thereon a setting and operation status of the UPnP control device including the image forming apparatus 100 , and a UI screen to receive a user's command to control the UPnP.
- the second display unit 230 may include a liquid crystal display (LCD), a driver (not shown) to drive the LCD and a touch panel (hereinafter, to be also called “touch screen” or “touch pad”) to recognize a user's touch.
- LCD liquid crystal display
- driver not shown
- touch panel hereinafter, to be also called “touch screen” or “touch pad”
- the second storage unit 240 stores therein the power management mode information of the image forming apparatus 100 .
- the second storage unit 240 includes an internal or portable storage medium.
- the second controller 290 controls the terminal device 200 as a whole.
- the second controller 290 controls the second communication unit 210 to transmit a corresponding message.
- the second controller 290 controls the second communication unit 210 to receive the power state information from the image forming apparatus 100 .
- the second controller 290 may include a UPnP stack to process the relevant operations of the UPnP protocol, and control devices in a home network supporting the UPnP according to the UPnP as well as controlling the image forming apparatus 100 .
- FIG. 2 sequentially illustrates processes of converting into and returning to the power mode according to the exemplary embodiment.
- the image forming apparatus 100 i.e., the low power UPnP device may receive the command to enter the power save mode corresponding to the particular level from the terminal device 200 , i.e., the low power control point in the active state as the normal mode (1. Action: GoToSleep).
- a user may transmit the command for the image forming apparatus 100 to enter the power save mode at a particular level by using the portable terminal device 200 supporting the UPnP protocol before he/she goes out.
- a user may transmit the command to enter the power save mode to other electronic devices which are controlled by the UPnP protocol as well as to the image forming apparatus 100 .
- a user may conveniently convert the power mode of the image forming apparatus 100 and other devices in the home network through the portable terminal device 200 without manipulating the devices individually.
- the image forming apparatus 100 enters the power save mode and is in a sleep state corresponding to the GoToSleep message transmitted from the terminal device 200 .
- the image forming apparatus 100 notifies the terminal device 200 of the sleep state according to the entry to the power save mode at the particular level (2. Notify: PowerState: sleep).
- the image forming apparatus 100 may receive a job command requiring a print operation in the sleep state.
- the image forming apparatus 100 may receive a fax from the outside as in FIG. 2 .
- the image forming apparatus 100 detects the reception of the fax through the fax unit 170 (3. Notice: Fax Start).
- the image forming apparatus 100 is converted into the wake up state from the sleep state (4. Action: WakeUp).
- the image forming apparatus 100 Upon the wakeup, the image forming apparatus 100 goes to the active state.
- the image forming apparatus 100 may selectively supply power to some elements according to the level in the sleep state. For example, if a fax is received at the level 3 in Table 1, power is supplied to the printer module (i.e., image forming unit 150 ) but the UI module (i.e., OPE) does not receive power and may maintain the sleep state.
- the printer module i.e., image forming unit 150
- the UI module i.e., OPE
- the image forming apparatus 100 notifies the terminal device 200 of the active state according to the wake up (2. Notify: PowerState: active).
- the image forming apparatus 100 prints the received fax data through the image forming unit 150 in the active state.
- the image forming apparatus 100 returns to the power save mode at the particular level (6. Action: GoToSleep).
- the level of the returned power save mode corresponds to the level before the wake up according to the reception of the fax and the standby time may selectively apply depending on the level.
- the image forming apparatus 100 prints the fax data at the level 1 in Table 1, it returns to the power save mode after the lapse of the preset standby time. In the case of the levels 2 and 3, the image forming apparatus 100 returns to the power save mode immediately after the completion of the print job for the fax data without application of the standby time.
- the image forming apparatus 100 After returning to the power save mode, the image forming apparatus 100 is in the sleep state and notifies the terminal device 200 of the foregoing (7. Notify: PowerState: sleep).
- the image forming apparatus 100 which supports the UPnP protocol may receive the command to enter the power save mode at the particular level (e.g., command to enter a first power save mode) from the control point, i.e., the terminal device 200 through the first communication unit 110 (S 10 ).
- the information on the level of the power save mode may be preset as in Table 1 and stored in the first storage unit 140 of the image forming apparatus 100 .
- the image forming apparatus 100 compares the command to enter the first power save mode received at operation S 10 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S 11 ).
- the first controller 190 may detect whether at least one job request signal is received from the image forming apparatus 100 (S 12 ).
- the job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in the first storage unit 140 , a document copy command, a fax transmission command and a document scan command.
- the first controller 190 controls the image forming unit 150 to perform the requested job while in the normal mode (S 14 ). If the requested job includes copy, fax transmission and scan jobs, the first controller 190 may control the image scanner 160 .
- the first controller 190 determines whether the job at operation S 14 is completed (S 15 ).
- the first controller 190 may determine whether to apply the standby time according to the level of the power save mode set at operation S 11 (S 16 ). More specifically, referring to Table 1, the first controller 190 determines that the standby time applies if the power save mode is the level 1, and determines that the standby time does not apply if the power save mode is the level 2 or 3.
- the standby time information is preset and stored in the first storage unit 140 .
- the first controller 190 determines whether the preset standby time elapses (S 17 ).
- the first controller 190 enters, i.e., returns to the power save mode corresponding to the level of the command received at operation S 10 , i.e., corresponding to the level at operation S 11 (S 18 ).
- the first controller 190 enters, i.e., returns to the power save mode corresponding to the level of the command received at operation S 10 , i.e., corresponding to the level at operation S 11 (S 18 ) immediately upon completion of the print job at operation S 15 .
- the image forming apparatus 100 selectively applies the standby time after the completion of the job according to the conversion of the normal mode depending on the level of the power save mode and reduces power consumption during the standby time.
- the image forming apparatus 100 which supports the UPnP protocol may receive a command to enter the power save mode at the particular level from the control point, i.e., the terminal device 200 through the first communication unit 110 (S 20 ).
- the information on the level of the power save mode may be preset as in Table 1 and stored in the first storage unit 140 of the image forming apparatus 100 .
- the image forming apparatus 100 compares the command to enter the power save mode received at operation S 20 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S 21 ).
- the first controller 190 may detect whether the command to turn off the power save mode is received from the control point, i.e., the terminal device 220 through the first communication unit 110 (S 22 ).
- the image forming apparatus 100 is converted into the normal mode (S 23 ).
- the first controller 190 may detect whether at least one job request signal is received from the image forming apparatus 100 (S 24 ).
- the job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in the first storage unit 140 , a document copy command, a fax transmission command and a document scan command.
- the first controller 190 controls the image forming unit 150 to perform the job (S 25 ).
- the first controller 190 determines whether the job at operation S 25 is completed (S 26 ).
- the first controller 190 determines whether the preset standby time elapses (S 27 ).
- the standby time information is preset, e.g., as 3600 seconds and stored in the first storage unit 140 .
- the first controller 190 enters the power save mode corresponding to the particular level (S 28 ).
- the level of the power save mode may be set as a default and stored in the first storage unit 140 .
- the image forming apparatus 100 which supports the UPnP protocol may receive a command to enter the power save mode at the particular level from the control point, i.e., the terminal device 200 through the first communication unit 110 (S 30 ).
- the information on the level of the power save mode may be preset as in Table 1 and stored in the first storage unit 140 of the image forming apparatus 100 .
- the image forming apparatus 100 compares the command to enter the power save mode received at operation S 30 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S 31 ).
- the first controller 190 may detect a reception of an UI input with respect to the first user input unit 120 of the image forming apparatus 100 (S 32 ).
- the UI input may include a command to perform a particular job supported by the image forming apparatus 100 , a command to log in to the image forming apparatus 100 and a command to select a particular menu from the first display unit 130 as well as the command to turn off the power save mode.
- the image forming apparatus 100 Upon the reception of the UI input at operation S 32 , the image forming apparatus 100 is converted into the normal mode corresponding to the input (S 33 ).
- the first controller 190 may detect a reception of at least one job request signal from the image forming apparatus (S 34 ).
- the job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in the first storage unit 140 , a document copy command, a fax transmission command and a document scan command.
- the first controller 190 controls the image forming unit 150 to perform the job (S 35 ).
- the first controller 190 determines whether the print job at operation S 35 is completed (S 36 ).
- the first controller 190 determines whether the preset standby time elapses (S 37 ).
- the first controller 190 determines whether the preset standby time elapses without performing other operations (S 37 ).
- the standby time information is preset, e.g., as 3600 seconds and stored in the first storage unit 140 .
- the first controller 190 enters the power save mode corresponding to the particular level (S 38 ).
- the level of the power save mode may be set as a default and stored in the first storage unit 140 .
- the image forming apparatus 100 may be converted into the normal mode from the power save mode by using the portable terminal device 200 or by simple manipulation such as the UI input of the image forming apparatus 100 .
- an image forming apparatus and a power management method thereof categorizes power save modes of the image forming apparatus supporting a universal plug and play (UPnP) protocol by using a low power protocol of the UPnP protocol, and reduces unnecessary power consumption and improves usability.
- UPF universal plug and play
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Abstract
A power management method of an image forming apparatus in a home network system including the image forming apparatus and a terminal device. The power management method includes setting power save mode information which includes a plurality of levels corresponding to a predetermined home network protocol to the image forming apparatus; storing the set power save mode information; receiving a command to enter a first power save mode among the plurality of levels from the terminal device; comparing the received command to enter the first power save mode with the stored power save mode information; and entering a power save mode by the image forming apparatus corresponding to the received command to enter the first power save mode.
Description
- This application is a continuation of U.S. application Ser. No. 12/923,348, filed on Sep. 15, 2010, which claims priority from Korean Patent Application No. 10-2010-0002999, filed on Jan. 13, 2010 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference.
- 1. Field
- Apparatuses and methods consistent with the exemplary embodiments relate to an image forming apparatus and a power management method thereof, and more particularly, to an image forming apparatus and a power management method thereof which applies a universal plug and play (UPnP) protocol to a power save mode of the image forming apparatus.
- 2. Description of the Related Art
- People are increasingly using devices enabling establishment of a home network system with a universal plug and play (UPnP) which is a standard for securing interoperability. An image forming apparatus may be utilized as a control device by using the UPnP protocol.
- The image forming apparatus forms an image on a document. The image forming apparatus may include a printer, a photocopier, a facsimile, or a multi-function device which has at least two functions.
- As one of power management modes, the image forming apparatus has a power save mode in which power supplied to some components is cut off to reduce power consumption when the image forming apparatus does not perform, say, a print operation during a preset standby time.
- Upon a reception of a request for a print job while in the power save mode, the image forming apparatus performs the print job and again enters the power save mode only after a lapse of the preset standby time from the completion of the print job. Thus, unnecessary power consumption occurs during the standby time.
- For example, even if a user needs a temporary print job such as a reception of a fax, the image forming apparatus may unnecessarily consume power until the standby time elapses after the completion of printing the received fax data.
- Additional aspects and/or advantages will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the invention.
- Accordingly, one or more exemplary embodiments provide an image forming apparatus and a power management method thereof which categorizes a power save mode of the image forming apparatus supporting a universal plug and play (UPnP) using a low power protocol of the UPnP protocol, and reduces unnecessary power consumption and improves usability.
- The foregoing and/or other aspects may be achieved by providing a power management method of an image forming apparatus which communicates with at least one terminal device supporting a universal plug and play (UPnP) protocol, the method including: setting power save mode information which includes a plurality of levels corresponding to the UPnP protocol to the image forming apparatus; storing the set power save mode information; receiving a command to enter a first power save mode among the plurality of levels from the terminal device; comparing the received command to enter the first power save mode with the stored power save mode information; and entering a power save mode by the image forming apparatus corresponding to the received command to enter the first power save mode.
- The method may further include identifying a current level of the power save mode upon a reception of at least one job request from the image forming apparatus; and converting the power save mode to a normal mode and performing the job.
- The at least one job may include at least one of a fax reception from the outside, a reception of print data, a print job for print data stored in a storage unit of the image forming apparatus, a document copy job, a fax transmission job and a document scan job.
- If the at least one job is completed, the image forming apparatus may return to the power save mode according to the level of the power save mode.
- The returning to the power save mode may include determining whether a standby time which is preset depending on the level of the power save mode elapses; and returning to the power save mode if the standby time elapses.
- The entering the power save mode may include selectively supplying power to the image forming apparatus depending on the level of the power save mode.
- The method may further include receiving a command to turn off the power save mode from the terminal device, wherein the image forming apparatus may be converted into the normal mode according to the command to turn off the power save mode.
- The method may further include receiving a user interface (UI) input of the image forming apparatus, wherein the image forming apparatus may be converted into a normal mode corresponding to the input.
- The plurality of levels of the power save mode may be classified according to at least one of an operation at a time of entering a power save mode, an operation at a time of requesting a job and an operation after a completion of the job, or any combination thereof.
- The foregoing and/or other aspects may be achieved by providing an image forming apparatus which communicates with at least one terminal device supporting a universal plug and play (UPnP) protocol, the image forming apparatus including: a power supply unit which supplies power to the image forming apparatus; an operation panel which sets information on a power save mode having a plurality of levels corresponding to the UPnP protocol to the image forming apparatus; a storage unit which stores therein the set information of the power save mode; a communication unit which communicates with the terminal device according to the UPnP protocol and receives print data from a host device or transmits scan data to the host device; a fax unit which transmits a fax and receives a fax from/to a fax machine; and a controller which controls the power supply unit for the image forming apparatus to enter a power save mode upon a reception of a command to enter a first power save mode among the plurality of levels from the terminal device through the communication unit.
- The image forming apparatus may further include an image forming unit which forms an image, wherein the controller may identify the current level of the power save mode upon a reception of at least one job request from the image forming apparatus, control the power supply unit for the image forming apparatus to be converted into a normal mode from the power save mode and control the image forming unit to perform the job.
- The at least one job may include at least one of a fax reception from a fax machine, a reception of print data from the host device, a print job for print data stored in the storage unit, a document print job, a fax transmission job and a document scan job.
- The controller may control the power supply unit for the image forming apparatus to return to the power save mode according to the level of the power save mode upon a completion of the at least one job.
- The controller may determine whether a standby time which is preset depending on the level of the power save mode elapses, and control the power supply unit for the image forming apparatus to return to the power save mode if the standby time elapses.
- The controller may control the power supply unit to selectively supply power to the image forming apparatus depending on the level of the power save mode.
- The communication unit may receive a command from the terminal device to turn off the power save mode, and the controller may control the power supply unit for the image forming apparatus to be converted into a normal mode from the power save mode according to the command to turn off the power save mode.
- The operation panel may receive a user interface (UI) input, and the controller may control the power supply unit for the image forming apparatus to be converted into the normal mode upon a reception of the UI input.
- The plurality of levels of the power save mode may be categorized according to at least one of an operation at a time of entering the power save mode, an operation at a time of requesting a job and an operation after a completion of the job.
- The above and/or other aspects will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a block diagram of an image forming apparatus according to an exemplary embodiment; -
FIG. 2 sequentially illustrates processing of entering and returning to a power save mode according to the exemplary embodiment; and -
FIGS. 3A to 5B are flowcharts of a power management method according to the exemplary embodiment. - Below, exemplary embodiments will be described in detail with reference to accompanying drawings so as to be easily realized by a person having ordinary knowledge in the art. The exemplary embodiments may be embodied in various forms without being limited to the exemplary embodiments set forth herein. Descriptions of well-known parts are omitted for clarity, and like reference numerals refer to like elements throughout.
-
FIG. 1 is a block diagram of animage forming apparatus 100 and aterminal device 200 according to an exemplary embodiment of the present invention. Theimage forming apparatus 100 and theterminal device 200 support a universal plug and play (UPnP) protocol and communicate with each other in a wired/wireless network. - The
terminal device 200 may include a portable terminal as a control point outputting a control signal using the UPnP protocol. Theterminal device 200 may include a low power control point which outputs a control signal under a low power protocol of the UPnP protocol. - The
image forming apparatus 100 is a control device operating by the control signal of the control point. Theimage forming apparatus 100 may include a printer, a photocopier, a scanner, a facsimile or a multi-function printer (MFP) having at least two functions. Theimage forming apparatus 100 may include a low power UPnP device which provides a power save mode under the low power protocol of the UPnP protocol. - As shown in
FIG. 1 , theimage forming apparatus 100 according to the exemplary embodiment includes afirst communication unit 110, a firstuser input unit 120, afirst display unit 130, afirst storage unit 140, animage forming unit 150, animage scanner 160, afax unit 170, apower supply unit 180 and afirst controller 190. - The
first communication unit 110 performs a data communication with theterminal device 200, a host device and an external device including a server. - More specifically, the
first communication unit 110 receives a control signal according to the UPnP protocol from the control point, i.e., theterminal device 200. The received control signal is a low power control signal of the UPnP protocol. The received control signal includes a GoToSleep message and a WakeUp message to turn off the power save mode with respect to the control device, i.e., theimage forming apparatus 100. - The
image forming apparatus 100 according to the exemplary embodiment has a normal mode (hereinafter, to be also called ready mode) and a plurality of power save modes (hereinafter, to be also called sleep modes) corresponding to a plurality of levels as a power management mode. - In the normal mode, a power state is active and power supply is set as on state to normally supply power to elements of the
image forming apparatus 100, e.g., both a user interface (UI) module and a printer module. The UI module may include the firstuser input unit 120 and the first display unit 130 (to be described later) or an operation panel (OPE). The printer module includes theimage forming unit 150 which drives an engine and forms an image according to a print command. - Upon a reception of the GoToSleep message from the
terminal device 200 through thefirst communication unit 110 in the normal mode, theimage forming apparatus 100 enters the power save mode in which power supplied to some elements of theimage forming apparatus 100, e.g., the UI module and the printer module is selectively cut off. The GoToSleep message includes a command to enter the power save mode corresponding to one of a plurality of levels as in Table 1 below. - The power save mode may be categorized as three levels as in Table 1 below. As an example of the present invention, the power save mode is categorized as three phases of a level 1 (transparent sleep), a level 2 (deep sleep online) and a level 3 (deep sleep offline).
- The plurality of power save mode levels in Table 1 may use a UPnP low power architecture as a power management protocol defined in the UPnP. The
image forming apparatus 100 may further have a disconnect mode in which connection for power supply to theimage forming apparatus 100 is physically disconnected. -
TABLE 1 Operation at the Power time of entering Operation at the Operation after Management power save request of print completion of print Power State Mode mode job job Active Normal UI Module: ON UI Module: ON UI Module: Sleep Printer Module: Printer Module: after lapse of standby ON ON time Printer Module: Sleep after lapse of standby time Transparent Level 1 UI Module: UI Module: ON UI Module: Sleep Sleep Sleep Printer Module: after lapse of standby Printer Module: ON time Sleep Printer Module: Sleep after lapse of standby time DeepSleep Level 2 UI Module: UI Module: ON UI Module: Sleep Online Sleep Printer Module: immediately Printer Module: ON Printer Module: Sleep Sleep immediately DeepSleep Level 3 UI Module: UI Module: Sleep UI Module: maintain Offline Sleep Printer Module: Sleep state Printer Module: ON Printer Module: Sleep Sleep immediately - As shown in Table 1 above, the power save mode of the
image forming apparatus 100 is set to selectively cut off power to elements of theimage forming apparatus 100, e.g., the UI module and the printer module according to the operation at the time of entering the power save mode, the operation at the request of a print job and operation after a completion of the print job. - More specifically, at the level 1 (transparent sleep), power supplied to the UI module and the printer module is cut off at the time of entering the power save mode, and power is supplied again to the UI module and the printer module upon a reception of a request for a print job. If the received print job is completed, the
image forming apparatus 100 returns to the power save mode at the level 1 in which power supplied to both the UI module and the printer module is cut off after the lapse of the preset standby time. - At the level 2 (deep sleep online), power supplied to the UI module and the printer module is cut off at the time of entering the power save mode, and power is supplied again only to the printer module upon a reception of a request for a print job. If the received print job is completed, the
image forming apparatus 100 returns to the power save mode at the level 3 in which the power supplied to the printer module is cut off and the UI module maintains a power-off state. - At the level 3 (deep sleep offline), power supplied to the UI module and the printer module is cut off at the time of entering the power save mode, and power is supplied again to both the UI module and the printer module upon a reception of a request for a print job. If the received print job is completed, the
image forming apparatus 100 returns to the power save mode at the level 1 in which power supplied to the UI module and the printer module is cut off after elapse of preset standby time. - Regardless of the level of the power save mode, power supplied to other elements of the image forming apparatus 100 (e.g., a scan module including the image scanner 160) than the UI module and the printer module may be cut off in the power save mode and supplied again in the normal mode.
- The
first communication unit 110 which communicates with theterminal device 200 and thefax unit 170 which receives a fax from the outside may continue to receive power even at the time of entering the power save mode. - Referring to Table 1, the normal mode is set for the
image forming apparatus 100 to enter the power save mode after a preset standby time elapses without performing the print job. The power save mode is preset as one of the level 1, level 2 and level 3 in Table 1 and stored in thefirst storage unit 140. Information on the standby time for entering the power save mode is preset and stored in thefirst storage unit 140. - The
first communication unit 110 transmits power state information of theimage forming apparatus 100 to the control point, i.e., theterminal device 200. Thefirst communication unit 110 may transmit the power state information to theterminal device 200 upon an occurrence of an event such as conversion of a power mode or on a regular basis. - The
first communication unit 110 may receive a Wake Up signal including a command to enter the normal mode from theterminal device 200 while theimage forming apparatus 100 is in the power save mode. Upon a reception of the Wake Up signal, theimage forming apparatus 100 turns into the normal mode from the power save mode, and thefirst communication unit 110 notifies theterminal device 200 of the normal mode of theimage forming apparatus 100. - The
first communication unit 110 receives print data in a predetermined print language (e.g., Printer Command Language (PCL) or Post Script(PS)) from an external PC such as the host device (including a server). - The
first communication unit 110 may include a wired/wireless network communication module which is connected with theterminal device 200, or the external device such as the host device by a local connection or in a network by a predetermined protocol, or an interface connected to a portable storage medium such as a USB memory (e.g., USB port). - The
first communication unit 110 may perform a scan to host function or a scan to server function to transmit a scan image to the outside such as the host device (including a server) by a predetermined protocol or perform a scan to email function to transmit the scan image to the outside or perform a scan to USB function to store the scan image in a USB memory. The data which are received from the outside through thefirst communication unit 110 are stored in thefirst storage unit 140. - The first
user input unit 120 receives a user's command. Theuser input unit 120 may include an input button (hereinafter, to be also called “hard key”) provided in theimage forming apparatus 100 or a graphic user interface(hereinafter, to be also called “UI”) which is generated by an execution of a predetermined application and displayed on thefirst display unit 130 to receive a user's input by touch. - A user may perform a log-in process inputting an ID and a password assigned for each user account through the first
user input unit 120. The log-in process includes an administrator log-in process in which setting and change of all of the environments of theimage forming apparatus 100 is available without an additional access limit. If a user log-in process or an administrator log-in process is performed, theimage forming apparatus 100 identifies and permits a user. According to the exemplary embodiment, a user includes an administrator. - The
first display unit 130 displays thereon a setting and operation status of theimage forming apparatus 100. Thefirst display unit 130 may display thereon a UI screen to receive various commands from a user. - The
first display unit 130 may include a liquid crystal display (LCD), a driver (not shown) to drive the LCD and a touch panel (hereinafter, to be also called “touch screen” or “touch pad”) to recognize a user's touch. - In the
image forming apparatus 100, the firstuser input unit 120 may include an icon to be selected by a user through the touch panel of thefirst display unit 130. The firstuser input unit 120 and thefirst display unit 130 may be provided as a single configuration rather than separate configurations. - In the
image forming apparatus 100, the single configuration of the firstuser input unit 120 and thefirst display unit 130 is also called an operation panel (OPE). - The
first display unit 130 may include a local display unit which is provided in theimage forming apparatus 100 and a remote display unit which is provided in the host device connected to theimage forming apparatus 100 through thefirst communication unit 110. - If the
first display unit 130 includes the remote display unit, a remote user interface (RUI) is selected as the firstuser input unit 120 displayed on the remote display unit. A user's command is then received from the host device connected to theimage forming apparatus 100 through thefirst communication unit 110. - The
first storage unit 140 stores therein various print data for a print job, fax data for a fax transmission, image data scanned by theimage scanner 160, data received from the outside connected through thefirst communication unit 110, various setting information of theimage forming apparatus 100 through the firstuser input unit 120, user registration information set for each user account, user certification information, usage authorization information, etc. - The
first storage unit 140 of theimage forming apparatus 100 according to the present invention may further store therein information of the power management modes in Table 1 and information of the standby time applicable to each of the power management modes. - The
first storage unit 140 includes an internal storage medium such as an HDD, or an external or portable storage medium such as a USB memory, a memory card (memory stick, CF card, and a MMC), and a memory card slot. - The
image forming unit 150 forms an image on paper and performs a print job according to a print command. The print job includes a print job for received fax data, a print job to copy a scanned document, and a print job for print data received from the outside through the host device including a server or print data stored in an inside (hard disk drive) or outside (USB memory stick) of theimage forming apparatus 100. The print job for the print data stored in the USB memory is a direct print. The data which are stored in the USB memory or the memory card may be retransmitted to the outside through thefirst communication unit 110 as well as being printed. - The
image scanner 160 scans a target document and generates scan data. The target document may include a document, a photo, a film, etc. Theimage scanner 160 may include a photo converter such as CCD and CIS and an image processor which generates an image from a document by using a signal output from the photo converter. Theimage scanner 160 may further include a scan motor to drive the photo converter and the image processor, and a guide. - The scan data which are scanned by the
image scanner 160 may be changed into a fax signal and transmitted to anexternal fax machine 201 by thefax unit 170. - The
fax unit 170 may include a fax communication module (e.g., modem) which converts image data generated by theimage scanner 160 into a fax signal and transmits the fax signal to the external fax machine 201 (including a multi-function printer having a fax function) by using a public switched telephone network (PSTN) or receives a fax signal from theexternal fax machine 201. The fax data which are received through thefax unit 170 are stored in thefirst storage unit 140. - The
power supply unit 180 supplies power to theimage forming apparatus 100 according to the power mode. Thepower supply unit 180 may selectively supply power to some elements of the image forming apparatus 100 (e.g., UI module) to correspond to the level of the power save mode according to a control of thefirst controller 190. - The
first controller 190 controls theimage forming apparatus 100 as a whole. - More specifically, the
first controller 190 receives a message including a command to convert into the power mode from theterminal device 200 through thefirst communication unit 110, and converts into the power mode of theimage forming apparatus 100 according to the received command. - The
first controller 190 may include a UPnP stack to process relevant operations of the UPnP protocol, a power management module for a management of power, and an event handler to handle an event such as conversion of the power mode or a print command. - The
first controller 190 controls thefirst communication unit 110 to notify theterminal device 200 of the power mode status information of theimage forming apparatus 100. Thefirst controller 190 may control thefirst communication unit 110 to transmit the power mode status information to theterminal device 200 upon an occurrence of the event such as the conversion of the power mode or at a preset period. - Upon a reception of a request for a print job while in the power save mode, the
first controller 190 identifies the current level of the power save mode, and converts the power save mode into the normal mode and supplies power to the elements of theimage forming apparatus 100. - According to the identified level of the power save mode, the
first controller 190 may selectively supply power to the elements of theimage forming apparatus 100. - For example, referring to Table 1, if the identified power save mode is the level 1 or the level 2, the
first controller 190 supplies power to both the UI module (operation panel) and the printer module (image forming unit 150). If the identified module is the level 3, thefirst controller 190 may cut off power supplied to the UI module (operation panel) and supply power only to the printer module (image forming unit 150). - The
first controller 190 controls theimage forming unit 150 to perform such job as a print job when theimage forming apparatus 100 converts into the normal mode. - If the job is completed, the
image forming apparatus 100 returns to the power save mode. The level of the returned power save mode becomes a level of the power save mode which was set before the reception of the job request. - The
first controller 190 may selectively apply the standby time according to the identified level of the power save mode in returning to the power save mode. - For example, referring to Table 1, if the identified power save mode is the level 1, the
first controller 190 cuts off power supplied to the UI module (operation panel) and the printer module (image forming unit 150) in the event that the preset standby time elapses. If the identified power save mode is the level 2, thefirst controller 190 cuts off power supplied to the UI module (operation panel) and the printer module (image forming unit 150) upon the completion of the job without application of the standby time. If the identified power save mode is the level 3, thefirst controller 190 cuts off power supplied to the printer module (image forming unit 150) upon the completion of the job without application of the standby time, and has the UI module (operation panel) maintain the power-off state. - Accordingly, the
image forming apparatus 100 according to the present invention categorizes the power save mode into the levels 1 to 3, selectively supplies power to the elements of theimage forming apparatus 100 upon a reception of the job request in the power save mode, and returns to the power save mode immediately after the completion of the job without application of the standby time to thereby reduce unnecessary power consumption during the standby time. - As shown in
FIG. 1 , theterminal device 200 includes asecond communication unit 210, a seconduser input unit 220, asecond display unit 230, asecond storage unit 240 and asecond controller 290. - The
second communication unit 210 performs a data communication with theterminal device 200. - More specifically, the
second communication unit 210 transmits a GoToSleep message and a Wake Up message to turn off the power save mode as a low power control signal under the UPnP protocol to a control device, i.e., theimage forming apparatus 100 and receives power state information from theimage forming apparatus 100 by a user's manipulation. Thesecond communication unit 210 may receive the power state signal from theimage forming apparatus 100 upon an occurrence of an event such as a conversion of a power mode or on a regular basis. - The second
user input unit 220 receives a user's command. The received command may include the GoToSleep message or a command to turn off the power save mode with respect to theimage forming apparatus 100. - The second
user input unit 220 may include an input button (hereinafter, to be also called “hard key”) provided in theterminal device 200 or a graphic user interface (hereinafter, to be also called “UI”) which is generated by an execution of a program such as an application and displayed on thesecond display unit 230 to receive a user's input by touch. - The
second display unit 230 may display thereon a setting and operation status of the UPnP control device including theimage forming apparatus 100, and a UI screen to receive a user's command to control the UPnP. - The
second display unit 230 may include a liquid crystal display (LCD), a driver (not shown) to drive the LCD and a touch panel (hereinafter, to be also called “touch screen” or “touch pad”) to recognize a user's touch. - The
second storage unit 240 stores therein the power management mode information of theimage forming apparatus 100. Thesecond storage unit 240 includes an internal or portable storage medium. - The
second controller 290 controls theterminal device 200 as a whole. - More specifically, upon a reception of a user command to enter the power save mode at a predetermined level or to turn off the power save mode through the second
user input unit 220, thesecond controller 290 controls thesecond communication unit 210 to transmit a corresponding message. Thesecond controller 290 controls thesecond communication unit 210 to receive the power state information from theimage forming apparatus 100. - The
second controller 290 may include a UPnP stack to process the relevant operations of the UPnP protocol, and control devices in a home network supporting the UPnP according to the UPnP as well as controlling theimage forming apparatus 100. -
FIG. 2 sequentially illustrates processes of converting into and returning to the power mode according to the exemplary embodiment. - As shown therein, the
image forming apparatus 100, i.e., the low power UPnP device may receive the command to enter the power save mode corresponding to the particular level from theterminal device 200, i.e., the low power control point in the active state as the normal mode (1. Action: GoToSleep). - For example, a user may transmit the command for the
image forming apparatus 100 to enter the power save mode at a particular level by using the portableterminal device 200 supporting the UPnP protocol before he/she goes out. - A user may transmit the command to enter the power save mode to other electronic devices which are controlled by the UPnP protocol as well as to the
image forming apparatus 100. - A user may conveniently convert the power mode of the
image forming apparatus 100 and other devices in the home network through the portableterminal device 200 without manipulating the devices individually. - The
image forming apparatus 100 enters the power save mode and is in a sleep state corresponding to the GoToSleep message transmitted from theterminal device 200. - The
image forming apparatus 100 notifies theterminal device 200 of the sleep state according to the entry to the power save mode at the particular level (2. Notify: PowerState: sleep). - The
image forming apparatus 100 may receive a job command requiring a print operation in the sleep state. For example, theimage forming apparatus 100 may receive a fax from the outside as inFIG. 2 . - More specifically, the
image forming apparatus 100 detects the reception of the fax through the fax unit 170 (3. Notice: Fax Start). - As the fax is received, the
image forming apparatus 100 is converted into the wake up state from the sleep state (4. Action: WakeUp). - Upon the wakeup, the
image forming apparatus 100 goes to the active state. - The
image forming apparatus 100 may selectively supply power to some elements according to the level in the sleep state. For example, if a fax is received at the level 3 in Table 1, power is supplied to the printer module (i.e., image forming unit 150) but the UI module (i.e., OPE) does not receive power and may maintain the sleep state. - The
image forming apparatus 100 notifies theterminal device 200 of the active state according to the wake up (2. Notify: PowerState: active). - The
image forming apparatus 100 prints the received fax data through theimage forming unit 150 in the active state. - If the print job for the fax data is completed, the
image forming apparatus 100 returns to the power save mode at the particular level (6. Action: GoToSleep). The level of the returned power save mode corresponds to the level before the wake up according to the reception of the fax and the standby time may selectively apply depending on the level. - For example, if the
image forming apparatus 100 prints the fax data at the level 1 in Table 1, it returns to the power save mode after the lapse of the preset standby time. In the case of the levels 2 and 3, theimage forming apparatus 100 returns to the power save mode immediately after the completion of the print job for the fax data without application of the standby time. - After returning to the power save mode, the
image forming apparatus 100 is in the sleep state and notifies theterminal device 200 of the foregoing (7. Notify: PowerState: sleep). - With the foregoing configuration, a power management process of the
image forming apparatus 100 will be described with reference toFIGS. 3A to 5B . - As shown in
FIGS. 3A and 3B , theimage forming apparatus 100 which supports the UPnP protocol may receive the command to enter the power save mode at the particular level (e.g., command to enter a first power save mode) from the control point, i.e., theterminal device 200 through the first communication unit 110 (S10). The information on the level of the power save mode may be preset as in Table 1 and stored in thefirst storage unit 140 of theimage forming apparatus 100. - The
image forming apparatus 100 compares the command to enter the first power save mode received at operation S10 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S11). - While the
image forming apparatus 100 is in the power save mode, thefirst controller 190 may detect whether at least one job request signal is received from the image forming apparatus 100 (S12). The job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in thefirst storage unit 140, a document copy command, a fax transmission command and a document scan command. - Upon the reception of the job request signal at operation S12, the
image forming apparatus 100 is converted into the normal mode (S13). - The
first controller 190 controls theimage forming unit 150 to perform the requested job while in the normal mode (S14). If the requested job includes copy, fax transmission and scan jobs, thefirst controller 190 may control theimage scanner 160. - The
first controller 190 determines whether the job at operation S14 is completed (S15). - If the job is completed at operation S15, the
first controller 190 may determine whether to apply the standby time according to the level of the power save mode set at operation S11 (S16). More specifically, referring to Table 1, thefirst controller 190 determines that the standby time applies if the power save mode is the level 1, and determines that the standby time does not apply if the power save mode is the level 2 or 3. The standby time information is preset and stored in thefirst storage unit 140. - If the standby time applies at operation S16, i.e., if the power save mode is the level 1, the
first controller 190 determines whether the preset standby time elapses (S17). - If it is determined that the preset standby time elapses at operation S17, the
first controller 190 enters, i.e., returns to the power save mode corresponding to the level of the command received at operation S10, i.e., corresponding to the level at operation S11 (S18). - If the standby time does not apply at operation S16, i.e., if the power save mode is the level 2 or 3, the
first controller 190 enters, i.e., returns to the power save mode corresponding to the level of the command received at operation S10, i.e., corresponding to the level at operation S11 (S18) immediately upon completion of the print job at operation S15. - As in the exemplary embodiment in
FIGS. 3A and 3B , theimage forming apparatus 100 selectively applies the standby time after the completion of the job according to the conversion of the normal mode depending on the level of the power save mode and reduces power consumption during the standby time. - As shown in
FIGS. 4A and 4B , theimage forming apparatus 100 which supports the UPnP protocol may receive a command to enter the power save mode at the particular level from the control point, i.e., theterminal device 200 through the first communication unit 110 (S20). The information on the level of the power save mode may be preset as in Table 1 and stored in thefirst storage unit 140 of theimage forming apparatus 100. - The
image forming apparatus 100 compares the command to enter the power save mode received at operation S20 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S21). - While the
image forming apparatus 100 is in the power save mode, thefirst controller 190 may detect whether the command to turn off the power save mode is received from the control point, i.e., theterminal device 220 through the first communication unit 110 (S22). - If the command to turn off the power save mode is received at operation S22, the
image forming apparatus 100 is converted into the normal mode (S23). - While the
image forming apparatus 100 is in the normal mode, thefirst controller 190 may detect whether at least one job request signal is received from the image forming apparatus 100 (S24). The job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in thefirst storage unit 140, a document copy command, a fax transmission command and a document scan command. - Upon the reception of the job request signal at operation S24, the
first controller 190 controls theimage forming unit 150 to perform the job (S25). - The
first controller 190 determines whether the job at operation S25 is completed (S26). - If the job is completed at operation S26, the
first controller 190 determines whether the preset standby time elapses (S27). The standby time information is preset, e.g., as 3600 seconds and stored in thefirst storage unit 140. - If it is determined that the preset standby time elapses at operation S27, the
first controller 190 enters the power save mode corresponding to the particular level (S28). The level of the power save mode may be set as a default and stored in thefirst storage unit 140. - As shown in
FIGS. 5A and 5B , theimage forming apparatus 100 which supports the UPnP protocol may receive a command to enter the power save mode at the particular level from the control point, i.e., theterminal device 200 through the first communication unit 110 (S30). The information on the level of the power save mode may be preset as in Table 1 and stored in thefirst storage unit 140 of theimage forming apparatus 100. - The
image forming apparatus 100 compares the command to enter the power save mode received at operation S30 with the prestored power save mode information, and enters the power save mode corresponding to the level of the received command (S31). - While the
image forming apparatus 100 is in the power save mode, thefirst controller 190 may detect a reception of an UI input with respect to the firstuser input unit 120 of the image forming apparatus 100 (S32). The UI input may include a command to perform a particular job supported by theimage forming apparatus 100, a command to log in to theimage forming apparatus 100 and a command to select a particular menu from thefirst display unit 130 as well as the command to turn off the power save mode. - Upon the reception of the UI input at operation S32, the
image forming apparatus 100 is converted into the normal mode corresponding to the input (S33). - While the
image forming apparatus 100 is in the normal mode, thefirst controller 190 may detect a reception of at least one job request signal from the image forming apparatus (S34). The job request signal may include a reception of a fax from the outside, a reception of print data from the host device, a print command for the print data stored in thefirst storage unit 140, a document copy command, a fax transmission command and a document scan command. - Upon the reception of the job request signal at operation S34, the
first controller 190 controls theimage forming unit 150 to perform the job (S35). - The
first controller 190 determines whether the print job at operation S35 is completed (S36). - If the job at operation S36 is completed, the
first controller 190 determines whether the preset standby time elapses (S37). - If the job request signal is not received at operation S34, the
first controller 190 determines whether the preset standby time elapses without performing other operations (S37). - The standby time information is preset, e.g., as 3600 seconds and stored in the
first storage unit 140. - If it is determined that the preset standby time elapses at operation S37, the
first controller 190 enters the power save mode corresponding to the particular level (S38). The level of the power save mode may be set as a default and stored in thefirst storage unit 140. - As in the exemplary embodiment in
FIGS. 4A-5B , theimage forming apparatus 100 may be converted into the normal mode from the power save mode by using the portableterminal device 200 or by simple manipulation such as the UI input of theimage forming apparatus 100. - As described above, an image forming apparatus and a power management method thereof according to the present invention categorizes power save modes of the image forming apparatus supporting a universal plug and play (UPnP) protocol by using a low power protocol of the UPnP protocol, and reduces unnecessary power consumption and improves usability.
- Although a few exemplary embodiments have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (23)
1. A power management method of an image forming apparatus in a home network system comprising the image forming apparatus and a terminal device, the method comprising:
setting power save mode information which comprises a plurality of levels corresponding to a predetermined home network protocol to the image forming apparatus;
storing the set power save mode information;
receiving a command to enter a first power save mode among the plurality of levels from the terminal device;
comparing the received command to enter the first power save mode with the stored power save mode information; and
entering a power save mode by the image forming apparatus corresponding to the received command to enter the first power save mode.
2. The method according to claim 1 , further comprising identifying a current level of the power save mode upon a reception of at least one job request from the image forming apparatus; and
converting the power save mode to a normal mode and performing the job.
3. The method according to claim 2 , wherein the at least one job comprises at least one of a printing for a print data stored in a storage unit of the image forming apparatus or received from a host device, copying of a document, a fax transmission, a fax reception from outside, a reception of print data from a host device, and scanning of a document.
4. The method according to claim 2 , wherein if the at least one job is completed, the image forming apparatus returns to the power save mode according to the level of the power save mode.
5. The method according to claim 4 , wherein the returning to the power save mode comprises determining whether a standby time which is preset depending on the level of the power save mode elapses; and
returning to the power save mode if the standby time elapses.
6. The method according to claim 1 , wherein the entering the power save mode comprises selectively supplying power to the image forming apparatus depending on the level of the power save mode.
7. The method according to claim 1 , further comprising receiving a command to turn off the power save mode from the terminal device, wherein
the image forming apparatus is converted into the normal mode according to the command to turn off the power save mode.
8. The method according to claim 1 , further comprising receiving a user interface (UI) input of the image forming apparatus, wherein
the image forming apparatus is converted into a normal mode corresponding to the input.
9. The method according to claim 1 , wherein the plurality of levels of the power save mode is classified according to at least one of an operation at a time of entering a power save mode, an operation at a time of requesting a job and an operation after a completion of the job.
10. The method according to claim 1 , wherein the predetermined home network protocol comprises a universal plug and play (UPnP) protocol.
11. An image forming apparatus in a home network system comprising the image forming apparatus and a terminal device, the image forming apparatus comprising:
a power supply unit which supplies power to the image forming apparatus;
an operation panel which sets information on a power save mode having a plurality of levels corresponding to a predetermined home network protocol to the image forming apparatus;
a storage unit which stores therein the set information of the power save mode;
a communication unit which communicates with the terminal device according to the predetermined home network protocol and receives print data from a host device or transmits scan data to the host device; and
a controller which controls the power supply unit for the image forming apparatus to enter a power save mode upon a reception of a command to enter a first power save mode among the plurality of levels from the terminal device through the communication unit.
12. The image forming apparatus according to claim 11 , further comprising an image forming unit which forms an image,
wherein the controller identifies the current level of the power save mode upon a reception of at least one job request of the image forming apparatus, controls the power supply unit to be converted into a normal mode from the power save mode and controls the image forming unit to perform the job.
13. The image forming apparatus according to claim 12 , wherein the at least one job comprises at least one of a printing for a print data stored in a storage unit of the image forming apparatus or received from a host device, copying of a document, a fax transmission, a fax reception from outside, a reception of print data from a host device, and scanning of a document.
14. The image forming apparatus according to claim 12 , wherein the controller controls the power supply unit to return to the power save mode according to the level of the power save mode upon a completion of the at least one job.
15. The image forming apparatus according to claim 14 , wherein the controller determines whether a standby time which is preset depending on the level of the power save mode elapses, and controls the power supply unit to return to the power save mode if the standby time elapses.
16. The image forming apparatus according to claim 11 , wherein the controller controls the power supply unit to selectively supply power to the image forming apparatus depending on the level of the power save mode.
17. The image forming apparatus according to claim 11 , wherein the communication unit receives a command from the terminal device to turn off the power save mode, and the controller controls the power supply unit to be converted into a normal mode from the power save mode according to the command to turn off the power save mode.
18. The image forming apparatus according to claim 11 , wherein the operation panel receives a user interface (UI) input, and the controller controls the power supply unit to be converted into the normal mode upon a reception of the UI input.
19. The image forming apparatus according to claim 11 , wherein the plurality of levels of the power save mode is categorized according to at least one of an operation at a time of entering the power save mode, an operation at a time of requesting a job and an operation after a completion of the job.
20. The image forming apparatus according to claim 11 , wherein the predetermined home network protocol comprises a universal plug and play (UPnP) protocol.
21. A power management method of a home network system comprising a control device and a control point, the method comprising:
setting power save mode information which comprises a plurality of levels corresponding to a predetermined home network protocol to the control point;
storing the set power save mode information;
receiving a command to enter a first power save mode among the plurality of levels from the control device;
comparing the received command to enter the first power save mode with the stored power save mode information; and
entering a power save mode by the control point corresponding to the received command to enter the first power save mode.
22. The method according to claim 21 , wherein the predetermined home network protocol comprises a universal plug and play (UPnP) protocol.
23. The method according to claim 21 , wherein the control point comprises an image forming apparatus which forms an image,
the image forming apparatus performs at least one job comprising at least one of a printing for a print data stored in a storage unit of the image forming apparatus or received from a host device, copying of a document, a fax transmission, a fax reception from outside, a reception of print data from a host device, and scanning of a document.
Priority Applications (1)
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US13/972,357 US20130339774A1 (en) | 2010-01-13 | 2013-08-21 | Image forming apparatus and power management method thereof |
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KR1020100002999A KR20110083008A (en) | 2010-01-13 | 2010-01-13 | Image forming apparatus and power management method thereof |
US12/923,348 US8539267B2 (en) | 2010-01-13 | 2010-09-15 | Image forming apparatus and power management method thereof |
US13/972,357 US20130339774A1 (en) | 2010-01-13 | 2013-08-21 | Image forming apparatus and power management method thereof |
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US13/972,357 Abandoned US20130339774A1 (en) | 2010-01-13 | 2013-08-21 | Image forming apparatus and power management method thereof |
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JP5586924B2 (en) * | 2009-11-24 | 2014-09-10 | キヤノン株式会社 | Image forming apparatus |
JP2012244606A (en) * | 2011-05-24 | 2012-12-10 | Oki Data Corp | Image formation device |
US10009842B2 (en) * | 2011-06-09 | 2018-06-26 | Thomson Licensing | Method for exiting a low-consumption standby mode, and associated device |
JP2013161381A (en) * | 2012-02-08 | 2013-08-19 | Canon Inc | Image processor, control method of image processor, and program |
JP5684766B2 (en) * | 2012-09-19 | 2015-03-18 | 株式会社東芝 | MFPs and systems |
US9436268B2 (en) * | 2012-09-27 | 2016-09-06 | Hewlett-Packard Development Company, L.P. | System power control using a power supply to provide voltage to subsystems in which a subsystem determines its operating state based on the voltage received by the subsystem |
CN103176840A (en) * | 2013-02-20 | 2013-06-26 | 广东欧珀移动通信有限公司 | Method for managing starts-up of application programs and mobile terminal with application program start-up management function |
JP6119443B2 (en) * | 2013-06-11 | 2017-04-26 | 富士ゼロックス株式会社 | Electronic device, power management system and program |
KR20160025890A (en) | 2014-08-28 | 2016-03-09 | 삼성전자주식회사 | Method for controlling an image forming apparatus connected to external device through external device interfacing unit and image forming apparatus using the same |
JP2016115273A (en) * | 2014-12-17 | 2016-06-23 | 株式会社リコー | Power control system, power control method, information processing apparatus, and power control program |
CN105786534B (en) * | 2014-12-18 | 2019-03-12 | 联芯科技有限公司 | Information acquisition method and device |
ES2574930B1 (en) * | 2014-12-22 | 2017-04-19 | Bsh Electrodomésticos España, S.A. | Domestic appliance |
JP2018019328A (en) * | 2016-07-29 | 2018-02-01 | 株式会社リコー | Electronic apparatus, radio communication device and power state control method |
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KR100769679B1 (en) | 2001-01-11 | 2007-10-24 | 삼성전자주식회사 | Method for power saving of Image forming device |
JP2003337510A (en) * | 2002-05-21 | 2003-11-28 | Brother Ind Ltd | Printing system, and image forming apparatus for the same |
JP4217445B2 (en) * | 2002-09-06 | 2009-02-04 | キヤノン株式会社 | Data processing apparatus, power control method, computer-readable storage medium, and program |
JP2004334793A (en) * | 2003-05-12 | 2004-11-25 | Canon Inc | Peripheral device, server system, client device, network device system, device searching method, storing medium for storing computer-readable program, and program |
JP4336636B2 (en) * | 2004-09-21 | 2009-09-30 | キヤノン株式会社 | Communication apparatus and communication method |
WO2006038094A1 (en) * | 2004-10-06 | 2006-04-13 | Nokia Corporation | Distributed link-layer wake-up agent system, method and device for universal plug and play function with lower power proxy |
KR100657326B1 (en) * | 2005-07-07 | 2006-12-14 | 삼성전자주식회사 | Device and method for operating network application according to power management mode of communication device |
JP2007295080A (en) * | 2006-04-21 | 2007-11-08 | Ricoh Co Ltd | Communication equipment, communication method, program, and computer-readable recording medium |
JP5180613B2 (en) * | 2008-02-19 | 2013-04-10 | キヤノン株式会社 | Information processing apparatus and control method thereof |
KR101558270B1 (en) * | 2009-01-06 | 2015-10-08 | 삼성전자주식회사 | Image forming apparatus and method for controlling power consumption thereof |
JP2010186402A (en) * | 2009-02-13 | 2010-08-26 | Seiko Epson Corp | Electronic circuit, printing device, and electronic device |
JP2010194811A (en) * | 2009-02-24 | 2010-09-09 | Seiko Epson Corp | Printing device controller and printing device |
US8339626B2 (en) * | 2009-09-08 | 2012-12-25 | Samsung Electronics Co., Ltd. | Image forming apparatus and controlling method thereof |
JP2011109252A (en) * | 2009-11-13 | 2011-06-02 | Canon Inc | Communication device, control method of communication device, and program |
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