WO2023008362A1 - 出力装置及び画像形成装置 - Google Patents

出力装置及び画像形成装置 Download PDF

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Publication number
WO2023008362A1
WO2023008362A1 PCT/JP2022/028594 JP2022028594W WO2023008362A1 WO 2023008362 A1 WO2023008362 A1 WO 2023008362A1 JP 2022028594 W JP2022028594 W JP 2022028594W WO 2023008362 A1 WO2023008362 A1 WO 2023008362A1
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WO
WIPO (PCT)
Prior art keywords
data
control unit
output device
terminal device
processing
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.)
Ceased
Application number
PCT/JP2022/028594
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English (en)
French (fr)
Japanese (ja)
Inventor
仁志 松本
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.)
Kyocera Document Solutions Inc
Original Assignee
Kyocera Document Solutions 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 Kyocera Document Solutions Inc filed Critical Kyocera Document Solutions Inc
Priority to US18/580,303 priority Critical patent/US20250085768A1/en
Priority to JP2023538512A priority patent/JP7694667B2/ja
Publication of WO2023008362A1 publication Critical patent/WO2023008362A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operations
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • 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
    • 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
    • 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 power saving of an output device such as an image forming device.
  • An image forming apparatus such as a printer is known that receives data from a PC (Personal Computer) connected via a USB (Universal Serial Bus) cable and generates printed matter. Further, there is known an image forming apparatus capable of selectively executing a plurality of operation modes (for example, normal mode and power saving mode) with different power consumption. For example, when a print command is received from a PC in the power saving mode, the image forming apparatus changes from the power saving mode to the normal mode, performs processing based on the print command, and generates printed matter. It is
  • a printer connectable to a PC via a USB cable stores a command received from the PC in a buffer, and when the polling time arrives, it checks whether the command is stored in the buffer. is disclosed, a technique for returning from the energy saving mode is disclosed.
  • the PC may periodically transmit data to the output device to confirm whether communication with the image forming device is possible.
  • the image forming apparatus Even if the image forming apparatus receives such data that is meaningless to the user while transitioning to the power saving mode, the image forming apparatus supplies power to a part of the circuit and performs processing according to the received data. Execute the process. For example, the image forming apparatus restores the main memory from the energy saving state and transmits response data to the received data to the PC. As a result, power is supplied to a portion of the circuit, resulting in high power consumption.
  • Patent Document 1 discloses a technique in which a printer stores commands received from a PC in a buffer, and checks the contents of the buffer when the polling time arrives.
  • Patent Literature 1 discloses a technique for reducing the frequency of execution of confirmation processing for buffers to save power.
  • the polling timer circuit which measures the polling time, operates faster than the general timer circuit, which measures the polling time in units of seconds. less effective.
  • the present invention has been made in view of the above circumstances, and aims to further reduce power consumption in power saving mode in an output device that receives data transmitted from a terminal device connected via a cable. for the purpose.
  • An output device includes a connector connected to a terminal device via a cable, a buffer, a normal mode, and a power saving mode that consumes less power than the normal mode. and a control unit that executes alternatively.
  • the control unit receives data transmitted from the terminal device via the cable while the power saving mode is running, it temporarily stores the data in a buffer to execute processing according to the data. It waits temporarily, checks the data stored in the buffer at predetermined time intervals in seconds, and executes processing based on the data.
  • An image forming apparatus includes the output device described above and an image forming section that forms an image on a recording medium.
  • data transmitted from the terminal device via the cable while the energy saving mode is being executed is temporarily stored in the buffer, and processing according to the data is not immediately executed. , is executed after a temporary wait.
  • the period of low power consumption can be maintained for a long time, and power saving can be further achieved.
  • the standby time is set in seconds instead of the usual milliseconds, the power saving effect is high.
  • a timer with a high operating speed that is, a timer with a large amount of power consumption
  • Temporarily waiting for the processing according to the data sent from the terminal device may delay the execution of the processing and reduce convenience.
  • the standby is performed only in the power saving mode, and is not performed in the normal mode. Therefore, it is possible to prevent the convenience from greatly deteriorating.
  • FIG. 2 is a functional block diagram schematically showing the main internal configuration of the image forming apparatus according to the first embodiment;
  • FIG. FIG. 2 is a diagram schematically showing an example of the internal structure of an ASIC that constitutes a control unit and its peripheral portion;
  • FIG. 4 is a diagram for explaining the flow of data in normal mode;
  • [FIG. 2] is a diagram for explaining the flow of data when data is being received in power saving mode;
  • 4 is a diagram for explaining the flow of data when processing is executed in accordance with data in power saving mode;
  • FIG. 4 is a flowchart showing data confirmation processing;
  • FIG. 5 is a functional block diagram schematically showing the main internal configuration of an image forming apparatus according to a second embodiment;
  • FIG. 1 is a functional block diagram schematically showing the main internal configuration of an image forming apparatus 1 according to the first embodiment of the invention.
  • the image forming apparatus 1 is, for example, a multifunction device having multiple functions such as a copy function, a printer function, a scanner function, and a facsimile function.
  • the image forming apparatus 1 is an example of an output device in the claims.
  • the image forming apparatus 1 includes a control unit 10 , a document feeding section 6 , a document reading section 5 , an image forming section 12 , a fixing section 13 , a paper feeding section 14 , an operation section 47 , a USB connector 7 and a storage section 8 .
  • the document feeding section 6 is configured to be openable and closable by a hinge or the like on the upper surface of the document reading section 5 .
  • the document feeder 6 functions as a document pressing cover when reading a document placed on the platen glass.
  • the document feeder 6 is an ADF (Auto Document Feeder).
  • the document feeding section 6 has a document loading tray, and supplies the document placed on the document loading tray to the document reading section 5 .
  • the document reading section 5 optically reads the image of the document supplied to the document reading section 5 by the document feeding section 6 or the document placed on the platen glass, and generates image data.
  • Image data generated by the document reading unit 5 is stored in an image memory or the like.
  • the image forming unit 12 Based on the image data generated by the document reading operation, the image data stored in the image memory or the like, or the image data received from the computer connected to the network, the image forming unit 12 outputs the image data from the paper feeding unit 14. A toner image is formed on a recording sheet as a recording medium to be fed.
  • the fixing unit 13 heats and presses the recording paper on which the toner image is formed by the image forming unit 12 to fix the toner image on the recording paper.
  • the recording paper that has undergone the fixing process is discharged to the discharge tray.
  • the paper feed unit 14 includes a paper feed cassette.
  • the operation unit 47 accepts instructions from the user, such as image forming operation execution instructions, regarding various operations and processes that can be performed by the image forming apparatus 1 .
  • the operation unit 47 includes a display unit 473 for displaying operation guidance and the like for the user.
  • the operation unit 47 inputs user instructions based on the user's operation (touch operation) on the operation screen displayed on the display unit 473 via the touch panel of the display unit 473 or the user's operation on physical keys. Accept.
  • the display unit 473 is composed of an LCD (Liquid Crystal Display) or the like.
  • the display unit 473 has a touch panel. When the user performs an operation of touching a button or key displayed on the screen, the touch panel receives an instruction associated with the touched position.
  • the USB connector 7 is a USB connector for connecting the image forming apparatus 1 and a terminal device 40 such as a PC, which is an external device.
  • a USB cable 50 is connected to the USB connector 7 .
  • Image forming apparatus 1 performs data communication with terminal device 40 via USB cable 50 .
  • the storage unit 8 is a large-capacity storage device such as a HDD (Hard Disk Drive) or SSD (Solid State Drive).
  • the storage unit 8 stores various control programs and the like.
  • the control unit 10 includes a processor, RAM (Random Access Memory), ROM (Read Only Memory), and dedicated hardware circuits.
  • the processor is, for example, a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or an MPU (Micro Processing Unit).
  • the control unit 10 has a buffer 101 and a timer 102 .
  • the control unit 10 functions as a control section 100 through the operation of the processor according to the control program stored in the storage section 8.
  • the control unit 100 can be configured by a hardware circuit instead of the operation according to the control program by the control unit 10 .
  • the control unit 100 controls the overall operation of the image forming apparatus 1 .
  • the control unit 100 is connected to the document feeding unit 6, the document reading unit 5, the image forming unit 12, the fixing unit 13, the paper feeding unit 14, the operation unit 47, the USB connector 7, and the storage unit 8, and drives these units. control, etc.
  • the control unit 100 controls the operation of the image forming unit 12 and the like to form a document image indicated by image data obtained by reading by the document reading unit 5 on recording paper as a recording medium.
  • the control unit 100 controls the operation of the image forming unit 12 and the like according to a print command transmitted from the terminal device 40 via the USB connector 7 to form an image on recording paper as a recording medium.
  • the control unit 100 alternatively executes a plurality of modes with different power consumption (here, normal mode and power saving mode).
  • the normal mode is a mode for causing the image forming apparatus 1 to operate by default without reducing power consumption.
  • the power saving mode is a mode for causing the image forming apparatus 1 to operate with less power consumption than in the normal mode.
  • the buffer 101 is composed of a FIFO (First-In First Out) memory or the like.
  • the buffer 101 temporarily stores data transmitted from the terminal device 40 via the USB cable 50 when the power saving mode is executed.
  • a timer 102 is a general timer that measures seconds.
  • the control unit 100 When operating each operating mechanism of the image forming apparatus 1 in the power saving mode, the control unit 100 temporarily waits for execution of processing according to data transmitted from the terminal device 40 . Based on the time measured by the timer 102, the control unit 100 sets a predetermined time interval T in seconds (for example, T than the time interval used by the polling timer to check whether data has arrived). The data stored in the buffer 101 is checked at a remarkably long predetermined time interval), and a process corresponding to the data is executed. That is, when the control unit 100 is executing the power saving mode, even if data is received from the terminal device 40, the control unit 100 does not start executing the process according to the data immediately after receiving the data, and delays the start of execution.
  • T time interval
  • a memory having a sufficient capacity for accumulating data transmitted from the terminal device 40 at time intervals T is used.
  • FIG. 2 is a diagram schematically showing an example of the internal structure of an ASIC that constitutes the control unit 10 and its peripheral portion.
  • the printer ASIC 20 includes a CPU 21 , a RAMC 22 that is a memory controller, and a USB PHY (physical layer) 23 .
  • the USB PHY 23 performs data communication (specifically, packet communication) with the terminal device 40 via the USB cable 50 connected to the USB connector 7 .
  • the USB PHY 23 has a FIFO (First in First out) 24 as a buffer 101 .
  • the USB PHY 23 converts, for example, an electrical signal transmitted from the terminal device 40 into a digital signal and outputs it to the CPU 21, RAMC 22, or FIFO 24.
  • the USB PHY 23 further converts the digital signal into an electrical signal and transmits it toward the terminal device 40 .
  • the data output to the RAMC 22 is transferred to the RAM 30, which is the main memory, as required.
  • FIG. 3 is a diagram for explaining the flow of data when the image forming apparatus 1 is in normal mode.
  • the control unit 100 sends the received data to the USB PHY 23, if necessary, to the CPU 21 Alternatively, output to the RAMC 22, or transmit the response data from the USB PHY 23 to the terminal device 40.
  • FIG. 4A and 4B are diagrams for explaining the flow of data when the image forming apparatus 1 is in power saving mode.
  • FIG. 4A shows the situation when the USB PHY 23 is receiving data from the terminal device 40, and FIG. showing the situation.
  • the USB PHY 23 When the image forming apparatus 1 is in power saving mode, when the USB PHY 23 receives data from the terminal device 40, the USB PHY 23 stores the received data in the FIFO 24 as shown in FIG. 4A.
  • the control unit 100 activates the timer 102 when shifting from the normal mode to the power saving mode. In the power saving mode, control unit 100 determines whether data is stored in FIFO 24 based on the time measured by timer 102 each time a predetermined time interval T elapses. When the control unit 100 determines that data is stored in the FIFO 24, the control unit 100 executes processing according to the data (that is, predetermined processing to be performed on the data). For example, as shown in FIG. 4B, the control unit 100 causes the FIFO 24 to output data stored in the FIFO 24 to the CPU 21 or the RAMC 22, causes the CPU 21 or the RAMC 22 to execute data processing, or It causes the USB PHY 23 to transmit response data to the terminal device 40 .
  • the control unit 100 also determines whether or not it is necessary to perform processing according to the data stored in the FIFO 24. When control unit 100 determines that it is necessary to perform processing according to the data, it performs the processing, but when determining that it is not necessary, control unit 100 does not perform the processing. If the data stored in the FIFO 24 is a print command, the data includes print data, so the amount of data increases to some extent. In other words, data with a small amount of data can be said to be data that does not require processing according to the data. Therefore, for example, the control unit 100 determines that data whose data amount is equal to or greater than a predetermined amount is data that requires processing according to the data.
  • control unit 100 executes the data confirmation process every time interval T measured by the timer 102 when in the power saving mode.
  • the control unit 100 determines whether data is stored in the FIFO 24 (step S1). When the control unit 100 determines that data is stored in the FIFO 24 (YES in step S1), it determines whether or not the data requires processing (step S2). On the other hand, when the control unit 100 determines that no data is stored in the FIFO 24 (NO in step S1), it ends the data confirmation process.
  • control unit 100 determines that the data includes data requiring processing (YES in step S2)
  • the control unit 100 executes processing according to the data determined to require processing (step S3). , ends the data confirmation process.
  • the control unit 100 determines that the data does not include data that requires processing (NO in step S2)
  • the data confirmation processing ends.
  • data transmitted from the terminal device 40 via the USB cable 50 while the energy saving mode is being executed is temporarily stored in the FIFO 24, and processing according to the data is executed. Temporarily waited.
  • the standby time is set in seconds as described above, instead of the general millisecond (msec) unit used when checking whether data has arrived using the polling timer, so power saving effect is high. .
  • time interval T is set to a predetermined time interval that is significantly longer than the general time interval used when checking whether or not data has arrived by the polling timer, a timer with a high operating speed ( That is, it does not require a timer that consumes a large amount of power. Therefore, further power saving can be achieved.
  • control unit 100 determines whether or not the data stored in the FIFO 24 requires processing based on the size of the data amount. If it is determined that the data does not require processing, the processing is not performed. In other words, the control unit 100 executes the processing that should be executed immediately without fail, and executes the processing that does not need to be executed immediately at every time interval T. Power is supplied to prevent high power consumption.
  • the process according to the data transmitted from the terminal device 40 is temporarily put on standby, the execution of the process may be delayed and the convenience may be reduced.
  • the standby is performed only in the power saving mode, and is not performed in the normal mode. Therefore, it is possible to prevent the convenience from greatly deteriorating.
  • FIG. 6 is a functional block diagram schematically showing the main internal configuration of the image forming apparatus 1 according to the second embodiment.
  • the description of the second embodiment the description of the same configuration and processing as in the first embodiment will be omitted.
  • the image forming apparatus 1 according to the second embodiment differs from the image forming apparatus 1 according to the first embodiment shown in FIG.
  • the control unit 10 functions as a control section 100, a changing section 103, and a selection reception section 104 by the operation of the processor according to the control program stored in the storage section 8.
  • the changing unit 103 changes the length of the time interval T according to the usage environment of the image forming apparatus 1 . For example, it is expected that the frequency of use of the image forming apparatus 1 will be high from 9:00 am to 5:00 pm on weekdays. , the time interval T is lengthened. As a result, it is possible to realize an apparatus that has an excellent balance between power saving and convenience.
  • the change unit 103 determines the time period for shortening the time interval T and how much the time interval T is to be shortened by specifying the time period and the time interval specified by the operation unit 47 by the user's operation. According to a specified value indicating how short T should be.
  • the selection accepting unit 104 accepts a user's selection as to whether to enable or disable the function for temporarily waiting for execution of processing according to data transmitted from the terminal device 40 .
  • the selection accepting unit 104 accepts the user's selection via the operation unit 47 .
  • the control unit 100 enables or disables the above functions according to the user's selection received by the selection receiving unit 104. This makes it possible to further prevent the user's convenience from deteriorating.
  • the terminal device 40 may have a timeout function.
  • the timeout function is a function for terminating the connection relationship when there is no response from the other party of the data communication even after a predetermined period of time has elapsed. This function is originally based on the assumption that some kind of trouble has occurred on the other party.
  • the image The terminal device 40 may terminate the connection with the image forming device 1 by utilizing the timeout function even though the forming device 1 has no trouble. In such a case, when the terminal device 40 receives the response data transmitted from the image forming apparatus 1 after the elapse of the time interval T, inconsistency may occur and some problem may occur.
  • the configuration of the image forming apparatus 1 according to the third embodiment may be the configuration shown in either the first embodiment or the second embodiment.
  • the terminal device 40 is provided with a function for appropriately responding to the above information.
  • the function is provided in a printer driver for controlling the image forming apparatus 1 installed in the terminal device 40 .
  • the control unit 100 temporarily waits for execution of processing according to data transmitted from the terminal device 40 when shifting to the power saving mode. Information is transmitted to terminal device 40 via cable 50 . As a result, it is possible to prevent the above problem from occurring.
  • the configuration of the image forming apparatus 1 according to the fourth embodiment may be the configuration shown in either the first embodiment or the second embodiment.
  • the terminal device 40 is provided with a function for appropriately responding to the above information.
  • a function for appropriately responding to the above information For example, similar to the case described in the third embodiment, the above functions are provided in the printer driver.
  • the control unit 100 sets the length of the time interval T to be shorter than the timeout time set in the terminal device 40 when connecting to the image forming apparatus 1. .
  • the control unit 100 sets the time interval T to less than 5 seconds when connecting to the terminal device 40 for which the timeout period is set to 5 seconds.
  • the control unit 100 sets the time interval T to less than 3 seconds when connecting to the terminal device 40 for which the timeout period is set to 3 seconds.
  • the configuration of the image forming apparatus 1 according to the fifth embodiment may be the configuration shown in either the first embodiment or the second embodiment.
  • Appropriate power saving for the image forming apparatus 1 can be achieved regardless of the terminal device 40 that serves as the host by taking measures such as those described in the third to fifth embodiments.
  • the present invention is not limited to the configuration of the above embodiment, and various modifications are possible.
  • an image forming apparatus which is a multi-function machine, is used as an output apparatus according to the present invention, but this is merely an example.
  • the output device according to the present invention may be another output device such as a printer that performs output processing according to data received from the terminal device 40 .
  • FIGS. 1 to 6 are merely one embodiment of the present invention, and are not meant to limit the present invention to the configuration and processing.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
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PCT/JP2022/028594 2021-07-28 2022-07-25 出力装置及び画像形成装置 Ceased WO2023008362A1 (ja)

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Application Number Priority Date Filing Date Title
US18/580,303 US20250085768A1 (en) 2021-07-28 2022-07-25 Output device and image forming apparatus
JP2023538512A JP7694667B2 (ja) 2021-07-28 2022-07-25 出力装置及び画像形成装置

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JP2021-123467 2021-07-28
JP2021123467 2021-07-28

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JP2008176773A (ja) * 2006-12-21 2008-07-31 Canon Inc 情報処理装置、情報処理方法、該方法を実行するためのプログラム
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US20250085768A1 (en) 2025-03-13
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