US20150134986A1 - Information processing apparatus, control method for the same and storage medium - Google Patents

Information processing apparatus, control method for the same and storage medium Download PDF

Info

Publication number
US20150134986A1
US20150134986A1 US14/537,047 US201414537047A US2015134986A1 US 20150134986 A1 US20150134986 A1 US 20150134986A1 US 201414537047 A US201414537047 A US 201414537047A US 2015134986 A1 US2015134986 A1 US 2015134986A1
Authority
US
United States
Prior art keywords
communication
setting
power
information processing
processing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/537,047
Other languages
English (en)
Inventor
Shigeki Hasui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASUI, SHIGEKI
Publication of US20150134986A1 publication Critical patent/US20150134986A1/en
Priority to US15/477,185 priority Critical patent/US10649516B2/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • 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
    • 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
    • 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
    • G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
    • 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
    • G06F1/3293—Power saving characterised by the action undertaken by switching to a less power-consuming processor, e.g. sub-CPU
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/81—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1218—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources
    • G06F3/1221—Reducing or saving of used resources, e.g. avoiding waste of consumables or improving usage of hardware resources with regard to power consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/10—Current supply arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H04L41/0833—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for reduction of network energy consumption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • 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
    • H04N1/00209—Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
    • H04N1/00214—Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax details of transmission
    • H04N1/00217—Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax details of transmission only involving computer data transmission protocols, e.g. SMTP, WAP or HTTP
    • 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
    • H04N1/00244—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 with a server, e.g. an internet server
    • 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

  • the present invention relates to an information processing apparatus, a control method therefor and a storage medium, and more particularly, to an information processing apparatus capable of connecting to a network in a power-saving state.
  • IEEE802.1X defined by IEEE (Institute of Electrical and Electronic Engineers) exists. In IEEE802.1X, by registering apparatuses which can connect to a network with an authentication server in advance, detecting connection by an apparatus to a LAN (Local Area Network) port, and performing an authentication process, participation of an unregistered apparatus in the network can be prevented.
  • a power-saving technique for reducing power consumption of all information apparatuses used in an office or the like there is known a technique of detecting that an apparatus has not been operated for a predetermined time in a normal power state and transitioning to a power-saving state by an autonomous operation to reduce power during standby time.
  • an IEEE802.1X re-authentication process occurs due to link disconnection and reconnection accompanying the communication speed setting change at the time of transitioning to the power-saving state.
  • the IEEE802.1X authentication process generally requires a high-load negotiation process with an authentication server, and it is difficult for the sub-control section with in sufficient functions to cope therewith. Therefore, the information processing apparatus is required to transition from the power-saving state to the normal power state and perform the authentication process by the main control section. Though security is maintained, it is not possible to transition to the power-saving state, and power-saving cannot be realized.
  • a technique in which it is possible to transition to the power-saving state without performing an authentication process by the sub-control section.
  • a technique disclosed in Japanese Laid-Open Patent Publication (Kokai) No. 2011-82922 when the communication state is a non-authentication state in a predetermined communication standard, in the case of switching from the normal power state to the power-saving state, a power supply unit is controlled so that the communication state becomes a communication state enabling authentication, and an authentication process is performed. Furthermore, if the authentication process is successful, the power supply unit is controlled so that power supply to power-saving target parts is cut off to transition to the power-saving state.
  • IEEE802.1X authentication is caused to be in a non-authentication state by changing the communication speed setting to lower speed in response to transition to the power-saving state.
  • power to the main control section is cut off without changing the communication speed setting to transition to the power-saving state.
  • the IEEE802.1X re-authentication process occurs in a state that the communication speed setting is still changed to the lower speed.
  • the IEEE802.1X authentication process it is necessary to perform a high-load negotiation process with an authentication server, and the amount of data to be processed is large. Therefore, when the re-authentication process is performed under the low communication speed setting, data communication time accompanying the negotiation process performed with the authentication server increases in comparison with the normal power state.
  • the theoretical communication band of the power-saving state corresponds to one hundredth of that of the normal power state.
  • Data communication time increases by an amount corresponding thereto, and a problem occurs that the information processing apparatus cannot immediately transition to the power-saving state, and power-saving cannot be quickly achieved. That is, the information processing apparatus is required to avoid the IEEE802.1X re-authentication process due to a communication speed setting change made at the time of transitioning to the power-saving state even when communication based on IEEE802.1X authentication is enabled.
  • the present invention provides a technique making it possible, even if communication based on IEEE802.1X authentication is enabled, to avoid an IEEE802.1X re-authentication process due to a communication speed setting change made at the time of transitioning to the power-saving state and realize both of security and power-saving.
  • an aspect of the present invention provides an information processing apparatus operating in a first power state or a second power state in which power supply is reduced lower than the first power state, and performing communication with a communication apparatus connected via a network in a predetermined communication mode
  • the information processing apparatus comprises a judgment unit configured to judge whether setting of communication speed between the information processing apparatus and the communication apparatus is automatic speed setting or not, and a communication control unit configured to, if it is judged by the judgment unit that the setting of the communication speed is the automatic speed setting, set the communication speed to fixed communication speed with which network connection with the communication apparatus is not cut off at the time of transitioning from the first power state to the second power state.
  • FIG. 1 is a block diagram showing an example of a network environment in which an information processing apparatus according to an embodiment of the present invention is arranged.
  • FIG. 2 is a block diagram showing a schematic configuration of an MFP in FIG. 1 .
  • FIG. 3 is a block diagram showing a schematic configuration of a LAN I/F in FIG. 2 .
  • FIG. 4 is a flowchart showing a flow of a link speed setting changing process executed in the MFP.
  • FIG. 5 is a diagram showing an example of link speed setting information about the MFP acquired in step S 402 in FIG. 4 .
  • FIG. 6 is a diagram showing an example of link speed setting information about a communication apparatus acquired in step S 403 in FIG. 4 .
  • FIG. 7 is a diagram showing an example of power-saving setting information about the MFP acquired in step S 404 in FIG. 4 .
  • FIG. 8 is a flowchart showing details of an EEE-compatible fixed link speed setting process in step S 406 in FIG. 4 .
  • FIG. 9 is a flowchart showing details of an EEE-incompatible fixed link speed setting process in step S 407 in FIG. 4 .
  • FIG. 10A is a diagram showing an example of a link speed setting changing screen displayed on an operation section.
  • FIG. 10B is a diagram showing an example of a pop-up display of a link speed setting changing notification on the link speed setting changing screen.
  • FIG. 10C is a diagram showing another example of the pop-up display of the link speed setting changing notification on the link speed setting changing screen.
  • FIG. 11A is a diagram showing an example of a link speed setting screen displayed on the operation section.
  • FIG. 11B is a diagram showing an example of a pop-up display indicating that automatic speed setting is impossible in link speed setting on the link speed setting screen.
  • FIG. 12 is a diagram showing an example of the link speed setting screen when IP-FAX setting is enabled, which is displayed on the operation section.
  • FIG. 1 is a block diagram showing an example of a network environment in which an information processing apparatus according to an embodiment of the present invention is arranged.
  • An MFP 100 is a complex machine (information processing apparatus) which performs input/output and transmission/reception of an image and various kinds of image processing related thereto.
  • the MFP 100 is connected to a PC 110 , a server 111 , and a switch 112 (a communication apparatus) having a packet switching function via a LAN (Local Area Network) 120 .
  • each apparatus connected to the LAN 120 performs communication based on an authentication process using IEEE802.1X.
  • IEEE802.1X three components of a supplicant to be an authentication target, an authenticator which performs access control of a terminal on the basis of an authentication result and an authentication server (RADUIS server) which manages authentication information coordinate with one another to realize communication based on authentication.
  • the MFP 100 , the switch 112 and the server 111 play the roles of the supplicant, the authenticator and the authentication server (RADUIS server), respectively, to perform communication based on IEEE802.1X.
  • FIG. 2 is a block diagram showing a schematic configuration of the MFP 100 in FIG. 1 .
  • the MFP 100 is provided with a main controller 101 which controls the whole apparatus, an operation section 102 which is a user interface, a scanner 103 which is an image input device and a printer 104 which is an image output device.
  • a main controller 101 which controls the whole apparatus
  • an operation section 102 which is a user interface
  • a scanner 103 which is an image input device
  • a printer 104 which is an image output device.
  • Each of the operation section 102 , the scanner 103 and the printer 104 is connected to the main controller 101 , and the main controller 101 controls an operation of each component.
  • the main controller 101 controls the scanner 103 and the printer 104 .
  • the main controller 101 is also connected to the LAN 120 and a public circuit and performs input/output of image information, device information and other various kinds of information to/from an external apparatus via a LAN I/F 208 and a modem section 209 .
  • the MFP 100 in the present embodiment connects to the server 111 and the like on the LAN 120 via the switch 112 by the LAN I/F 208 .
  • the main controller 101 is provided with a CPU (Central Processing Unit) 201 which performs main control.
  • the CPU 201 is connected to a RAM (Random Access Memory) 202 , a ROM (Read Only Memory) 203 , a flash 204 and an image bus I/F 205 via a system bus 207 .
  • the CPU 201 is connected to an operation section I/F 206 , the LAN I/F 208 and the modem section 209 .
  • the RAM 202 is a memory for providing a work area of the CPU 201 , where reading and writing can be performed occasionally.
  • the RAM 202 is also used as an image memory for temporarily storing image data.
  • the ROM 203 is a boot ROM, in which a boot program of the system is stored.
  • the flash 204 is a nonvolatile memory, and system software, set value data and the like required to be maintained even after cutoff of power supply to the MFP 100 are stored therein.
  • the operation section I/F 206 is an interface for performing input/output between the operation section 102 and the operation section I/F 206 , which is configured, for example, with a liquid crystal touch panel or the like.
  • the operation section I/F 206 is used to output image data to be displayed, to the operation section 102 and to transmit information inputted by a user via the operation section 102 to the CPU 201 .
  • the LAN I/F 208 is an interface for connecting to the LAN 120 and performs input/output of information to/from the LAN 120 . Details of the LAN I/F 208 will be described later.
  • the modem section 209 is an interface for connecting to the public circuit and performs input/output of information to/from the public circuit.
  • the image bus I/F 205 is an interface which connects the system bus 207 and an image bus 210 , and operates as a bus bridge which converts a data structure.
  • a RIP (Raster Image Processor) 211 a device I/F 212 , a scanner image processing section 213 , a printer image processing section 214 , an image rotating section 215 and an image compressing section 216 are connected to the image bus 210 .
  • the RIP 211 develops PDL (Page Description Language) data received from the LAN 120 into a bitmap image.
  • the device I/F 212 is an interface which connects the scanner 103 and the printer 104 to the main controller 101 , and it performs synchronous/asynchronous conversion of image data.
  • the scanner image processing section 213 performs processes, such as correction, processing and editing, for input image data obtained by reading an image by the scanner 103 .
  • the printer image processing section 214 performs processes, such as color conversion, filter processing and resolution conversion, for print output image data to be outputted to the printer 104 .
  • the image rotating section 215 performs rotation of image data.
  • the image compressing section 216 performs a JPEG compression/expansion process for multi-valued image data and performs a JBIG, MMR or MH compression/expansion process for binary image data.
  • An HDD (Hard Disk Drive) 217 is a volatile data storage device, in which various kinds of data, such as image data, system data and user data, and an operation program executed by the CPU 201 are stored. It is assumed that, if the main controller 101 is not provided with the HDD 217 , the various kinds of data described above is held in the flash 204 .
  • a power supply control section 218 supplies DC power received from a power supply device 219 , which is a power supply unit, via a power supply line 220 to predetermined circuit elements of the main controller 101 via power supply lines 221 and 222 .
  • the power supply device 219 is provided with two-system power supply circuits: a large power supply circuit for large-capacity electric supply not shown, and a small power supply circuit for small-capacity electric supply not shown.
  • the power supply control section 218 performs electric supply control while switching between the power supply circuits in accordance with a power state of the MFP 100 to be described later.
  • the power supply control section 218 also receives a control signal from a control signal line 223 from the operation section I/F 206 , the LAN I/F 208 and the modem section 209 and a control signal line 224 from the CPU 201 . Then, the power supply control section 218 performs power supply control of each of the power supply lines ( 221 and 222 ) on the basis of the received control signal.
  • the power supply line 221 is connected to the CPU 201 , the ROM 203 , the HDD 217 and the image bus I/F 205 . Furthermore, the power supply line 221 is connected to the RIP 211 , the device I/F 212 , the scanner image processing section 213 , the printer image processing section 214 , the image rotating section 215 and the image compressing section 216 .
  • the power supply line 222 is connected to the RAM 202 , the operation section I/F 206 , the LAN I/F 208 and the modem section 209 .
  • the MFP 100 is provided with two operation modes: a normal power state and a power-saving state.
  • the power supply device 219 supplies power to the power supply control section 218 via the power supply line 220 .
  • the CPU 201 controls the power supply control section 218 so that power supply to the power supply line 221 and the power supply line 222 is enabled. That is, in the normal power state, power is supplied to both of the CPU 201 and the LAN I/F 208 from the power supply device 219 .
  • the power supply device 219 supplies power to the power supply control section 218 via the power supply line 220 .
  • the CPU 201 controls the power supply control section 218 so that only the power supply line 222 supplies power, and the power supply line 221 does not supply power.
  • power supply to main circuit elements 240 the main controller 101 is provided with, including the CPU 201 , is cut off.
  • power consumption of the MFP 100 can be greatly reduced in comparison with the normal power state.
  • the LAN I/F 208 can control the power supply control section 218 to return from the power-saving state to the normal power state. It should be noted that, in the present embodiment, the return from the power-saving state to the normal power state is caused not only by data reception by the wired LAN I/F 208 . The return can be also caused by FAX reception by the modem section 209 or by pressing of a button provided on the operation section 102 , which is not shown.
  • the power supply device 219 supplies only minimum power to the RAM 202 , and the RAM 202 backs up a system program by performing self-refresh operation. Thereby, it is possible to immediately develop the system program on the RAM 202 and perform operation return after returning from the power-saving state to the normal power state.
  • a power state in which power supply to the CPU 201 is reduced lower than the normal power state may be regarded as the power-saving state. In this case, it is necessary to lower the operating frequency of the CPU 201 in the power-saving state in comparison with the normal power state, and the processing performance of the CPU 201 per unit time is reduced.
  • FIG. 3 is a block diagram showing a schematic configuration of the LAN I/F 208 in FIG. 2 .
  • a ROM 302 is a nonvolatile memory configured with a flash memory or the like.
  • firmware and the like required for an operation of an MCU (Micro Control Unit) 308 which have been received from the main controller 101 via an I/F section 301 , are stored.
  • a REG 303 is a register group in which operation setting information and status information about the LAN I/F 208 are stored.
  • the MCU 308 performs register setting for the REG 303 and refers to a status of the REG 303 via the I/F section 301 .
  • a RAM 311 is a shared local memory in the LAN I/F 208 .
  • the capacity of the RAM 311 is smaller in comparison with the RAM 202 , and the RAM 311 can store minimum necessary programs and various kinds of data used for a packet response process of the LAN I/F 208 with minimum power consumption.
  • the LAN I/F 208 performs various kinds of packet processing by the MCU 308 and the various kinds of circuit elements operating in coordination with one another on the basis of the firmware stored in the ROM 302 and register values set for the REG 303 .
  • the MFP 100 receives data in a packet from the LAN 120 via a PHY 310 .
  • the PHY 310 performs protocol control of the physical layer of a network and converts an electrical signal received from the LAN 120 to a logic signal.
  • the PHY 310 transfers the receive packet to a MAC (Media Access Control) 309 .
  • the MAC 309 detects a destination and transmission source of the data and a boundary between frames which represent transmission/reception units, from the logic signal received from the PHY 310 .
  • the MAC 309 transfers the receive packet to an Rx FIFO (First In First Out) 304 which is a receive buffer. Then, after being handed to the main controller 101 via the I/F section 301 connected to the system bus 207 and temporarily stored on the RAM 202 , the receive packet is processed by the CPU 201 on the basis of a processing program developed on the RAM 202 in advance.
  • Rx FIFO First In First Out
  • the packet transmitting operation is a process in reverse order of the packet receiving operation described above.
  • the CPU 201 transfers a transmit packet to a Tx FIFO 305 , which is a transmit buffer, from the RAM 202 of the main controller 101 via the I/F section 301 and causes the transmit packet to be temporarily stored in the Tx FIFO 305 .
  • the MAC 309 transfers the transmit packet from the Tx FIFO 305 to the PHY 310 . Thereby, the transmit packet is sent out to the LAN 120 .
  • the MFP 100 receives a packet from the LAN 120 via the PHY 310 .
  • the PHY 310 transfers the receive packet to the MAC 309 .
  • the MAC 309 transfers the receive packet to an Rx FIFO 306 .
  • the MCU 308 detects that the Rx FIFO 306 has buffered the receive packet, analyzes the receive packet and judges whether performing response while keeping the power-saving state is possible or not. Specifically, it is judged whether performing response while keeping the power-saving state is possible or not by comparing a destination address, a protocol classification and the like obtained by analyzing the header and payload of the receive packet with response enabling patterns held in the RAM 311 in advance, which are not shown.
  • the response enabling patterns are assumed to include, for example, protocols such as ARP (Address Resolution Protocol) and SNMP (Simple Network Management Protocol).
  • the MCU 308 If judging that response to the received packet can be performed while keeping the power-saving state, the MCU 308 generates a response packet corresponding to the receive packet. Specifically, the MCU 308 generates header information and payload information about the response packet on the basis of a result of the analysis of the receive packet and response enabling patterns not shown described above. Then, the MCU 308 transfers the response packet to a Tx FIFO 307 . The response packet is transferred from the Tx FIFO 307 to the MAC 309 . The MAC 309 transfers the response packet to the PHY 310 . The response packet is transmitted to the LAN 120 .
  • the MCU 308 notifies the power supply control section 218 to change the power state to the normal power state. Then, after returning to the normal power state, the main controller 101 performs a response process for the received packet using the main circuit elements including the CPU 201 .
  • FIG. 4 is a flowchart showing a flow of the link speed setting changing process executed by the MFP 100 . It is assumed that the shown process is started by the MFP 100 detecting an operation of setting for IEEE802.1X authentication displayed by the user performing a predetermined menu operation not shown on the operation section I/F 206 during the normal power state. The process described hereinafter is executed by the CPU 201 on the basis of an operation program developed on the RAM 202 .
  • step S 401 the CPU 201 judges whether the link speed setting of the MFP 100 is automatic speed setting (auto-negotiation) or not.
  • the link speed setting is the automatic speed setting
  • a link speed setting change occurs at the time of transitioning from the normal power state to the power-saving state.
  • step S 402 the CPU 201 acquires information about link speed settings with which the MFP 100 , which is its own device, is compatible, and link speed for connecting to the LAN 120 via the switch 112 under the automatic speed setting (first acquisition).
  • the link speed setting information and the link speed are assumed to be acquired by referring to link speed information provided for an OS (Operating System) not shown, which constitutes the operation program developed on the RAM 202 .
  • the link speed for connection under the automatic speed setting acquired here is the maximum link speed enabling connection between the MFP 100 and the counter-connected switch 112 (hereinafter also referred to as “the counter apparatus”). Details of the link speed setting information will be described later.
  • step S 404 the CPU 201 acquires power-saving setting information about the MFP 100 (second acquisition). Details of the power-saving setting information will be described later.
  • step S 405 the CPU 201 judges, on the basis of the acquired pieces of link speed setting information about the MFP 100 and the communication apparatus, whether both apparatuses support the same link speed compatible with EEE (Energy-Efficient Ethernet (R)) or not. That is, it is judged whether connection can be established with EEE-compatible link speed. If it is judged that connection can be established with the EEE-compatible link speed, the CPU 201 transitions to step S 406 , where an EEE-compatible fixed link speed setting process is performed. On the other hand, if it is judged that connection with the EEE-compatible link speed cannot be established (incompatible with EEE), the CPU 201 transitions to step S 407 , where an EEE-incompatible fixed link speed setting process is performed. Detailed processes of steps S 406 and S 407 will be described later. It should be noted that EEE is a power-saving standard for PHY prescribed in IEEE802.3az.
  • the MFP 100 is provided with automatic speed setting 501 , 1000 Mbps fixed speed setting 502 , 100 Mbps fixed speed setting 503 and 10 Mbps fixed speed setting 504 as compatible link speed settings.
  • full duplex is provided for 1000 Mbps, and full duplex and half duplex are provided for each of 100 Mbps and 10 Mbps, as communication duplex not shown.
  • the link speed in the normal power state is set to any of the maximum 1000 Mbps, 100 Mbps and 10 Mbps. It should be noted that, higher link speed is preferentially set if the higher link speed can be established between the MFP 100 and the communication apparatus.
  • the link speed setting in the power-saving state is 10 Mbps, and this is the minimum link speed with which the MFP 100 can connect to the communication apparatus. Since, the link speed setting differs between the normal power state and the power-saving state under the automatic speed setting, link disconnection accompanying a link speed setting change occurs when the MFP 100 transitions to the power-saving state.
  • the same link speed is set in both the normal power state and the power-saving state. Even in the case of transitioning from the normal power state to the power-saving state, a link speed setting change does not occur, and link disconnection does not occur.
  • 1000 Mbps and 100 Mbps of the automatic speed setting 501 , and 1000 Mbps and 100 Mbps of the fixed speed setting ( 502 and 503 ) are compatible with EEE.
  • EEE When connecting to the communication apparatus with a link speed compatible with EEE, EEE can be realized. At this time, the PHY 310 stops unnecessary circuit operations when there is no communication, and power consumption can be reduced thereby.
  • FIG. 6 is a diagram showing an example of the link speed setting information about the communication apparatus acquired in step S 403 in FIG. 4 .
  • the switch 112 which is a counter apparatus of the MFP 100 , is provided with automatic speed setting 601 , 1000 Mbps fixed speed setting 602 , 100 Mbps fixed speed setting 603 and 10 Mbps fixed speed setting 604 as compatible link speed settings.
  • the switch 112 is compatible with EEE with each of the link speeds of 1000 Mbps and 100 Mbps under the automatic speed setting and the fixed speed setting.
  • the link speed setting in the normal power state is 1000 Mbps
  • the link speed setting in the power-saving state is 10 Mbps in the present embodiment.
  • FIG. 7 is a diagram showing an example of the power-saving setting information about the MFP 100 acquired in step S 404 in FIG. 4 .
  • the MFP 100 is provided with “high power consumption” 701 , which is non-power-saving setting, and “low power consumption” 702 , which is power-saving setting as power-saving state information 700 .
  • “high power consumption” 701 is setting under which frequency of transitioning from the normal power state to the power-saving state is low, and frequent use of the MFP 100 is prior to power-saving by transition to the power-saving state.
  • power consumption setting for the MFP 100 is set to “low power consumption” 702 .
  • step S 406 and S 407 in FIG. 4 details of each of the processes of step S 406 and S 407 in FIG. 4 will be described with the use of FIGS. 8 and 9 .
  • FIG. 8 is a flowchart showing the details of the EEE-compatible fixed link speed setting process in step S 406 in FIG. 4 .
  • step S 804 the CPU 201 sets the link speed of the MFP 100 to 1000 Mbps fixed and to EEE-enabled, and the process returns (communication control).
  • step S 901 the CPU 201 judges whether the MFP 100 is under the power-saving setting or not on the basis of the power-saving state information 700 acquired in step S 404 in FIG. 4 . If judging that the MFP 100 is under the power-saving setting, the CPU 201 transitions to step S 902 . On the other hand, if judging that the MFP 100 is not under the power-saving setting, the CPU 201 transitions to step S 904 .
  • step S 902 the CPU 201 judges whether or not the MFP 100 and the counter apparatus are compatible with 100 Mbps lower than the maximum link speed 1000 Mbps enabling connection in the normal power state. This is performed on the basis of the pieces of link speed setting information 500 and 600 about the MFP 100 and the communication apparatus acquired in step S 402 and S 403 in FIG. 4 . If it is judged in step S 902 that the MFP 100 and the counter apparatus are compatible with 100 Mbps, the CPU 201 transitions to step S 903 . On the other hand, if otherwise judged, the CPU 201 transitions to step S 904 .
  • step S 903 the CPU 201 sets the link speed of the MFP 100 to 100 Mbps fixed, and the process returns (communication control).
  • step S 904 the CPU 201 sets the link speed of the MFP 100 to 1000 Mbps fixed, and the process returns (communication control).
  • the link speed set in step S 903 link speed which is low enough not to affect the processing of the MFP 100 is desirable.
  • the link speed is set not to 10 Mbps which affects printing processing speed but to 100 Mbps.
  • the link speed setting changing notification on the link speed setting changing screen 1000 may be given by a pop-up display 1030 displaying a list of link speeds to which the setting can be changed and causing the user to make the change as shown in FIG. 10C .
  • a plurality of link speeds and EEE settings with which both the MFP 100 and the communication apparatus are compatible and with which fixed connection can be established are displayed on the basis of the pieces of link speed setting information 500 and 600 about the MFP 100 and the communication apparatus acquired in steps S 402 and S 403 in FIG. 4 .
  • four choices are displayed: 1000 Mbps (1000M-EEE) and 100 Mbps (100M-EEE) compatible with EEE, and 1000 Mbps (1000M) and 100 Mbps (100M) incompatible with EEE.
  • the user selects one link speed from among displayed selectable link speed settings.
  • the EEE-compatible 100 Mbps fixed link speed setting is set.
  • a screen display related to the link speed setting change described above may be configured to be shown at the time of changing the link speed setting.
  • a screen 1100 is an example of a confirmation screen displayed according to a state of setting of IEEE802.1X authentication after speed is set, in a link speed setting menu operation.
  • a screen 1100 is an example of a confirmation screen displayed according to a state of setting of IEEE802.1X authentication after speed is set, in a link speed setting menu operation.
  • Consideration will be made, for example, on a case of, after enabling IEEE802.1X authentication and setting the link speed to EEE 100 Mbps by a setting operation on the link speed setting changing screen 1000 shown in FIG. 10A in advance, changing the link speed setting to the automatic speed.
  • a pop-up display 1110 is shown to the effect that the automatic speed setting is impossible because IEEE802.1X authentication is enabled.
  • the MFP 100 can set fixed link speed with which both the MFP 100 and the communication apparatus are compatible.
  • the fixed link speed setting can be effective after that.
  • the re-authentication process that is, transition to the normal power state
  • link disconnection accompanying a link speed change made at the time of transitioning to the power-saving state can be avoided, and both of security and power-saving can be realized.
  • the fixed link speed to be set for the MFP 100 is not limited to 1000 Mbps and 100 Mbps. Other speeds are also possible. For example, a case can be considered where the pieces of link speed setting information about the MFP 100 and the communication apparatus acquired in steps S 402 and S 403 show setting EEE-compatible 10 G (Giga) bps faster than 1000 Mbps. It should be noted that, if it is judged in step S 801 that the power-saving state is set for the MFP 100 , link speed lower than 10 Gbps with which the MFP 100 and the communication apparatus are compatible may be set in step S 802 , and the 1000 Mbps or 100 Mbps fixed link speed may be set in step S 803 .
  • link speed setting is the automatic speed setting
  • link disconnection accompanying a link speed setting change occurs at the time of transitioning from the power-saving state to the normal power state, and then the MFP 100 cannot perform a response process until reconnection is established. Therefore, there is a possibility of timeout.
  • link speed setting to fixed link speed setting when the IP-FAX setting is enabled, similarly to the time of the IEEE802.1X authentication setting operation, it is possible to immediately return from the power-saving state without link disconnection accompanying a link speed setting change and respond to the counter gateway (communication apparatus) without occurrence of timeout.
  • a link speed setting change made when the IP-FAX setting is enabled can be confirmed on the operation section 102 .
  • a screen 1200 shown in FIG. 12 makes a notification to the effect that the link speed setting before change is to be changed from the automatic setting to the EEE-compatible 100 Mbps fixed speed setting by the pop-up display 1010 .
  • the screen notification is not limited thereto.
  • the setting is changed to fixed link speed with which network connection with the communication apparatus is not cut off at the time of transitioning to the power-saving state.
  • the setting is changed to fixed link speed with which network connection with the communication apparatus is not cut off at the time of transitioning to the power-saving state.
  • fixed link speed with which both the MFP 100 and the communication apparatuses are compatible is set.
  • 100 Mbps lower than 1000 Mbps is fixedly set when the power-saving setting is effective, and EEE is enabled.
US14/537,047 2013-11-13 2014-11-10 Information processing apparatus, control method for the same and storage medium Abandoned US20150134986A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/477,185 US10649516B2 (en) 2013-11-13 2017-04-03 Information processing apparatus, control method for the same and storage medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-234847 2013-11-13
JP2013234847A JP6218563B2 (ja) 2013-11-13 2013-11-13 情報処理装置および設定変更方法、並びにプログラム

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/477,185 Continuation US10649516B2 (en) 2013-11-13 2017-04-03 Information processing apparatus, control method for the same and storage medium

Publications (1)

Publication Number Publication Date
US20150134986A1 true US20150134986A1 (en) 2015-05-14

Family

ID=53044873

Family Applications (2)

Application Number Title Priority Date Filing Date
US14/537,047 Abandoned US20150134986A1 (en) 2013-11-13 2014-11-10 Information processing apparatus, control method for the same and storage medium
US15/477,185 Active 2035-03-11 US10649516B2 (en) 2013-11-13 2017-04-03 Information processing apparatus, control method for the same and storage medium

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/477,185 Active 2035-03-11 US10649516B2 (en) 2013-11-13 2017-04-03 Information processing apparatus, control method for the same and storage medium

Country Status (3)

Country Link
US (2) US20150134986A1 (ja)
JP (1) JP6218563B2 (ja)
CN (1) CN104639783B (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150261288A1 (en) * 2014-03-14 2015-09-17 Canon Kabushiki Kaisha Information processing apparatus, method of controlling the same, and storage medium
US20180159999A1 (en) * 2016-12-02 2018-06-07 Canon Kabushiki Kaisha Printing apparatus, control method of printing apparatus, and storage medium
US10649516B2 (en) 2013-11-13 2020-05-12 Canon Kabushiki Kaisha Information processing apparatus, control method for the same and storage medium
CN112787886A (zh) * 2020-12-30 2021-05-11 长沙湘计海盾科技有限公司 一种实时系统网络设备自协商的处理方法、设备驱动、可读存储介质和计算机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9942172B2 (en) * 2016-02-18 2018-04-10 Dell Products Lp Auto-negotiate extension for network connections
WO2017162516A1 (en) 2016-03-22 2017-09-28 Philips Lighting Holding B.V. Poe system providing measure of energy consumption
JP7183068B2 (ja) * 2019-02-19 2022-12-05 キヤノン株式会社 画像形成装置、画像形成装置の制御方法、及びプログラム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070240004A1 (en) * 2006-04-10 2007-10-11 Canon Kabushiki Kaisha Communication apparatus
US20100251342A1 (en) * 2009-03-25 2010-09-30 Canon Kabushiki Kaisha Communication apparatus, control method for the communication apparatus, and storage medium
US8977877B2 (en) * 2011-07-26 2015-03-10 Konica Minolta Business Technologies, Inc. Image processing apparatus, communication method therefor, and recording medium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7752672B2 (en) * 2006-03-15 2010-07-06 Cisco Technology, Inc. Methods and apparatus for physical layer security of a network communications link
JP5132388B2 (ja) * 2008-03-28 2013-01-30 キヤノン株式会社 通信装置、通信装置の制御方法、およびプログラム
JP2010183470A (ja) * 2009-02-09 2010-08-19 Nec Corp ネットワーク接続装置並びにネットワーク接続制御方法及びプログラム
JP5219915B2 (ja) * 2009-05-11 2013-06-26 キヤノン株式会社 データ通信装置及びその制御方法並びにプログラム
JP2011082922A (ja) * 2009-10-09 2011-04-21 Fuji Xerox Co Ltd 省電力制御装置
JP5488183B2 (ja) * 2010-05-06 2014-05-14 セイコーエプソン株式会社 通信装置及び通信制御方法
JP5454463B2 (ja) * 2010-12-22 2014-03-26 ブラザー工業株式会社 通信装置
JP5300099B2 (ja) * 2011-03-23 2013-09-25 Ｎｅｃアクセステクニカ株式会社 ネットワーク制御装置、通信速度変更方法及びプログラム
JP2012227804A (ja) * 2011-04-21 2012-11-15 Buffalo Inc 情報処理装置および情報処理装置の制御方法
JP6218563B2 (ja) * 2013-11-13 2017-10-25 キヤノン株式会社 情報処理装置および設定変更方法、並びにプログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070240004A1 (en) * 2006-04-10 2007-10-11 Canon Kabushiki Kaisha Communication apparatus
US20100251342A1 (en) * 2009-03-25 2010-09-30 Canon Kabushiki Kaisha Communication apparatus, control method for the communication apparatus, and storage medium
US8977877B2 (en) * 2011-07-26 2015-03-10 Konica Minolta Business Technologies, Inc. Image processing apparatus, communication method therefor, and recording medium

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10649516B2 (en) 2013-11-13 2020-05-12 Canon Kabushiki Kaisha Information processing apparatus, control method for the same and storage medium
US20150261288A1 (en) * 2014-03-14 2015-09-17 Canon Kabushiki Kaisha Information processing apparatus, method of controlling the same, and storage medium
US9778729B2 (en) * 2014-03-14 2017-10-03 Canon Kabushiki Kaisha Information processing apparatus, method of controlling the same, and storage medium for determining communication rate
US20170344101A1 (en) * 2014-03-14 2017-11-30 Canon Kabushiki Kaisha Information processing apparatus, method of controlling the same, and storage medium
US10725530B2 (en) * 2014-03-14 2020-07-28 Canon Kabushiki Kaisha Information processing apparatus that sets a communication rate based on whether an energy efficient ethernet function is enabled, method of controlling the same, and storage medium
US20180159999A1 (en) * 2016-12-02 2018-06-07 Canon Kabushiki Kaisha Printing apparatus, control method of printing apparatus, and storage medium
US10257377B2 (en) * 2016-12-02 2019-04-09 Canon Kabushiki Kaisha Printing apparatus, control method of printing apparatus, and storage medium
CN112787886A (zh) * 2020-12-30 2021-05-11 长沙湘计海盾科技有限公司 一种实时系统网络设备自协商的处理方法、设备驱动、可读存储介质和计算机

Also Published As

Publication number Publication date
US10649516B2 (en) 2020-05-12
US20170205867A1 (en) 2017-07-20
JP2015095800A (ja) 2015-05-18
CN104639783B (zh) 2018-10-16
CN104639783A (zh) 2015-05-20
JP6218563B2 (ja) 2017-10-25

Similar Documents

Publication Publication Date Title
US10649516B2 (en) Information processing apparatus, control method for the same and storage medium
EP3422777B1 (en) Communication apparatus and control method therefor
JP5300553B2 (ja) 通信装置、通信装置の制御方法、プログラム
US9625975B2 (en) Information processing apparatus capable of connecting to network in power saving state, method of controlling the same, and storage medium
US9172834B2 (en) Image forming system and method for recovering image forming apparatus from three different power saving modes
US20170201646A1 (en) Image forming apparatus capable of being set to power saving mode, method of controlling the same, and storage medium
US8793513B2 (en) Network device
US10725530B2 (en) Information processing apparatus that sets a communication rate based on whether an energy efficient ethernet function is enabled, method of controlling the same, and storage medium
US9535485B2 (en) Image processing apparatus, method for controlling the same and storage medium
US9377838B2 (en) Data processing apparatus and power saving control method when transiting to a power saving state
JP6873665B2 (ja) 印刷装置、印刷装置の制御方法、及びプログラム
US20140313531A1 (en) Information processing apparatus
US9134785B2 (en) Information processing apparatus with power saving mode, and control method and communication apparatus therefor
US9639138B2 (en) Electronic device that ensures reduced unnecessary recovery
US20130163616A1 (en) Communication apparatus that can be operated in power-saving mode, method of controlling the apparatus, and storage medium
JP2011124641A (ja) ネットワーク機器及びその制御方法、並びにプログラム
US11025516B2 (en) Communication apparatus provided with LAN interfaces and preventing connection to wrong network, control method, and storage medium
CN108121518B (zh) 打印装置、打印装置控制方法及存储介质
US9552041B2 (en) System, method and non-transitory computer-readable medium for controlling power supply in response to receipt of data over a network
US20190253879A1 (en) Communication apparatus, method of controlling the same, and storage medium
US20140359141A1 (en) Communication apparatus, communication apparatus control method, and storage medium for data communication using a call control server
JP2017149119A (ja) 情報処理装置及び情報処理装置の制御方法
JP2024059242A (ja) 通信制御装置、通信制御装置の制御方法、及びプログラム
JP2017216528A (ja) 情報処理装置、その制御方法、及びプログラム

Legal Events

Date Code Title Description
AS Assignment

Owner name: CANON KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HASUI, SHIGEKI;REEL/FRAME:035623/0199

Effective date: 20141028

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION