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Image forming system including image forming apparatus with sleep mode, control method for image forming apparatus in system concerned, and storage medium storing control program for image forming apparatus

Inactive Publication Date: 2016-05-12
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is an image forming system that can prevent a USB device from blocking the transmission of data packets to an information processing device when the USB device is in sleep mode. This ensures that the data can be transmitted without interruption.

Problems solved by technology

However, when the image forming apparatus is in the sleep mode, the image forming apparatus does not return to the normal mode from the sleep mode even if the USB device transmits a packet to the image forming apparatus.
As a result, the image forming apparatus cannot receive the packet that the USB device transmitted, and cannot transmit the packet concerned to the information processing apparatus.
That is, when the image forming apparatus shifts to the sleep mode, the USB device cannot transmit a packet to the information processing apparatus.

Method used

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  • Image forming system including image forming apparatus with sleep mode, control method for image forming apparatus in system concerned, and storage medium storing control program for image forming apparatus
  • Image forming system including image forming apparatus with sleep mode, control method for image forming apparatus in system concerned, and storage medium storing control program for image forming apparatus
  • Image forming system including image forming apparatus with sleep mode, control method for image forming apparatus in system concerned, and storage medium storing control program for image forming apparatus

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Embodiment Construction

[0022]Hereafter, embodiments according to the present invention will be described in detail with reference to the drawings.

[0023]FIG. 1 is a block diagram illustrating an image forming system 100 including an image forming apparatus 101 according to an embodiment of the present invention.

[0024]The image forming system 100 in FIG. 1 is provided with the image forming apparatus 101, a client PC 102 as an information processing apparatus, and a tablet terminal 103. The image forming apparatus 101 and the client PC 102 are connected through a network 104, and the image forming apparatus 101 and the tablet terminal 103 are connected through a USB I / F. Moreover, the image forming apparatus 101, the client PC 102, and the tablet terminal 103 support USBNW (USB Over Network).

[0025]The image forming apparatus 101 is provided with a USB core driver 105 and a USBNW functional module 106. The USB core driver 105 detects connection of a USB device, such as the tablet terminal 103, to the image f...

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PUM

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Abstract

An image forming system that is capable of preventing obstruction of transmission of a packet to an information processing apparatus from a USB device supporting USBNW due to the shift to the sleep mode. The image forming system includes an information processing apparatus, an image forming apparatus with a sleep mode, and a USB device that is connected to the information processing apparatus through the image forming apparatus and is controlled by the information processing apparatus. The image forming apparatus includes a first determination unit that determines whether the USB device supports USBNW, a second determination unit that determines whether a packet received from the information processing apparatus is processed by a module supporting USBNW, and a control unit that prohibits the image forming apparatus from shifting to the sleep mode when the USB device supports USBNW and when the packet is processed by the module supporting USBNW.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an image forming system including an image forming apparatus with a sleep mode, a control method for the image forming apparatus in the system concerned, and a storage medium storing a control program for the image forming apparatus.[0003]2. Description of the Related Art[0004]There is a known image forming system that includes an image forming apparatus, an information processing apparatus, and a USB device (for example, see Japanese Laid-Open Patent Publication (Kokai) No. 2007-310796 (JP 2007-310796A)). In the image forming system described in the publication, the information processing apparatus is connected to the image forming apparatus through a network, the USB device is connected to the image forming apparatus without going through the network, and the information processing apparatus controls the USB device via the image forming apparatus. Such a control technique is called USB...

Claims

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Application Information

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IPC IPC(8): H04N1/00G06K15/00
CPCH04N1/00896H04N1/00328H04N1/00339H04N1/00204H04N2201/0093G06K15/4025G06K15/4055H04N2201/0094H04N1/00904H04N1/00222H04N1/00209H04N1/00891H04N1/00925
Inventor KAWAGUCHI, TADASHI
Owner CANON KK
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