Wireless communication system, and wireless communication device and control method

• US 8,131,859 B2
• Filed: 04/20/2004
• Issued: 03/06/2012
• Est. Priority Date: 04/23/2003
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Fujii, Ken'ichi, Watanabe, Mitsuhiro, Nakahara, Masanori
• Primary Examiner(s): NEURAUTER, GEORGE C
• Application Number:
  US10/551,173
• Publication Number:
  US 20060206592A1
• Time in Patent Office: 2,877 Days
• Field of Search: 709227-228, 370/310
• US Class Current: 709/228
• CPC Class Codes: H04W 48/14 using user query or user detection
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

This invention has as its object to establish a wireless communication between wireless communication devices and to provide a desired service without any troublesome setup operations. To this end, a digital camera and printer of this invention have wireless communication functions. When it is determined that a wireless communication instruction is issued by a console of the digital camera, a beacon from a network is detected. Upon detection of the beacon, search request information used to confirm the presence of a wireless communication processing device on a network identified by network identification information included in the beacon is transmitted in accordance with that network identification information. If response information to this transmitted request information is detected, identification information of a partner wireless communication device included in the response information is stored, and is displayed to allow the user to select a connection target device.

Claims

1. A wireless communication device comprising:

a network detection unit adapted to detect a plurality of wireless networks;

a network connection unit adapted to connect to one or more of the wireless networks detected by the network detection unit;

a printer searching unit adapted to search for one or more printers having a predetermined print function within each wireless network connected to by the network connection unit;

a network changing unit adapted to, when the printer searching unit completes searching for the one or more printers having the predetermined print function within a wireless network connected to by the network connection unit, change the wireless network connected to by the network connection unit to another wireless network detected by the network detection unit, to search for the one or more printers having the predetermined print function within the other wireless network connected to by the network connection unit;

a display unit adapted to selectably display printer information associated with one or more printers detected by the printer search unit, every time the printer search unit detects one of the one or more printers having the predetermined print function;

an aborting unit adapted to abort the searching by the printer searching unit, when an operator selects a printer associated with information displayed by the display unit; and

a printer connection unit adapted to, when the operator selects the printer associated with the information displayed by the display unit, connect to one of the plurality of wireless networks including the selected printer and connect to the selected printer.

2. The device according to claim 1, further comprising:

a storage unit that stores, in a memory, identification information of the one or more printers detected by the printer searching unit,

wherein the display unit selectably displays the identification information stored in the memory.

3. The device according to claim 1, wherein the wireless communication device is an image sensing device or a storage device for executing a storage process of a sensed image.

4. The device according to claim 1, wherein, when the one or more printers having the predetermined print function are not detected, no signal is received in response to a search signal within a predetermined period of time, and an error display is made.

5. The device according to claim 1, further comprising:

a determination unit adapted to determine if a detected beacon signal is in an ad hoc communication mode or in an infrastructure communication mode, and,

when the determination unit determines that the detected beacon signal is in the ad hoc communication mode, the printer searching unit transmits a search signal for searching for the printer having the predetermined print function toward a printer that sent the detected beacon signal, and,

when the determination unit determines that the detected beacon signal is in the infrastructure mode, the network connecting unit connects to an access point that sent the detected beacon signal and the printer searching unit transmits the search signal toward the access point.

6. The device according to claim 1, further comprising a registration unit adapted to register, in a memory, information associated with the printer connected to by the printer connection unit in accordance with an indication by the operator.

7. The device according to claim 6, further including a mode for executing a process for establishing a wireless communication based on the information registered by said registration unit.

8. A method performed by a wireless communication device, the method comprising:

detecting a plurality of wireless networks;

connecting to one or more of the wireless networks detected by the network detection unit;

searching for one or more printers having a predetermined print function within each wireless network connected to;

when the searching for the one or more printers having the predetermined print function within a wireless network completes, connecting to another wireless network detected by the detecting, to search for the one or more printers having the predetermined print function within the other wireless network connected to by the network connection unit;

displaying printer information associated with the one or more printers detected by the searching, every time one of the one or more printers having the predetermined print function is detected by the searching;

when an operator selects a printer associated with information displayed by the displaying, aborting the searching; and

when the printer associated with the information displayed by the displaying is selected, connecting to one of the plurality of wireless networks including the selected printer and connecting to the selected printer.