Device and method for discovering peripherals connected to a computer network

• US 20050044217A1
• Filed: 09/28/2004
• Published: 02/24/2005
• Est. Priority Date: 08/26/1999
• Status: Abandoned Application

• Current Assignee: Canon Europa N.V. (Canon Inc.)
• Original Assignee: Canon Europa N.V. (Canon Inc.)
• Inventors: Moreau, Jean-Jacques
• Application Number:
  US10/951,527
• Publication Number:
  US 20050044217A1
• Time in Patent Office: Days
• US Class Current: 709/224
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/45 Network directories; Name-to-address mapping

Abstract

A method, implemented in at least a first peripheral device in a computer network, for discovering peripheral devices connected to the computer network from among a set of network addresses. The method draws an address from among a set of available network addresses, checks the existence or absence of a second peripheral device connected to the drawn address, and stores in memory the existence or absence of the second peripheral device in association with the drawn address in a peripherals discovery table of the first peripheral device. If the second peripheral device exists in association with the drawn address, a second peripherals discovery table stored in the second peripheral device is received and incorporated into the peripherals discovery table of the first peripheral device. Then, network addresses associated with entries of the second peripherals discovery table incorporated into the peripherals discovery table of the first peripheral device, as well as the drawn address, are eliminated from the set of available network addresses. The process is repeated as long as all the network addresses are not stored in the peripherals discovery table of the first peripheral device.

Claims

1-28. -28. (Canceled)

29. A method of discovering peripheral devices in a computer network by checking the existence or absence of peripheral devices associated to drawn addresses among a list of available addresses, each peripheral device storing a peripherals discovery table that includes, for each checked address, an entry indicating a result of the checking, wherein said method is implemented in a first peripheral device and comprises the steps of:

receiving from a discovered peripheral device the peripherals discovery table stored in said discovered peripheral device; and

incorporating not shared entries between the received peripherals discovery table and the peripherals discovery table stored in said first peripheral device into said peripherals discovery table stored in said first peripheral device.

30. The method of discovering peripheral devices according to claim 29, wherein said method further comprises a step of checking whether a discovered peripheral device shares the peripherals discovery table stored in said discovered peripheral device prior to reception of said peripherals discovery table.

31. The method of discovering peripheral devices according to claim 29, wherein said method further comprises a step of sending the peripherals discovery table stored in said first peripheral device to the discovered peripheral device.

35. A computer program, loadable into a computer comprising software code adapted to implement the method of discovering peripheral devices according to any one of claims 29 to 31 when said computer program is run on a computer.

32. A device for discovering peripheral devices in a computer network by checking the existence or absence of peripheral devices associated to drawn addresses among a list of available addresses, each peripheral device storing a peripherals discovery table that includes, for each checked address, an entry indicating a result of the checking, wherein said device is implemented in a first peripheral device and comprises:

means for receiving, from a discovered peripheral device, the peripherals discovery table stored in said discovered peripheral device; and

means for incorporating not shared entries between the received peripherals discovery table and the peripherals discovery table stored in said first peripheral device into said peripherals discovery table stored in said first peripheral device.

33. The device for discovering peripheral devices according to claim 32, wherein said device further comprises means for checking whether a discovered peripheral device shares the peripherals discovery table stored in said discovered peripheral device prior to reception of said peripherals discovery table.

34. The device for discovering peripheral devices according to claim 32, wherein said device further comprises means for sending the peripheral discovery table stored in said first peripheral device to the discovered peripheral device.