Communication apparatus, control method thereof, and storage medium

• US 9,395,944 B2
• Filed: 03/22/2011
• Issued: 07/19/2016
• Est. Priority Date: 03/24/2010
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yamada, Tetsuya
• Primary Examiner(s): Vu, Viet
• Assistant Examiner(s): Chambers, Michael A
• Application Number:
  US13/069,299
• Publication Number:
  US 20110238823A1
• Time in Patent Office: 1,946 Days
• Field of Search: 358/1.15, 709/222, 709/227, 370/474, 370/392, 370/357
• US Class Current: 1/1
• CPC Class Codes: G06F 3/1203 Improving or facilitating administration, e.g. print management
• CPC Class Codes: G06F 3/1215 achieving increased printing speed, i.e. reducing the time between printing start and printing end
• CPC Class Codes: G06F 3/122 with regard to computing resources, e.g. memory, CPU
• CPC Class Codes: G06F 3/1231 Device related settings, e.g. IP address, Name, Identification
• CPC Class Codes: G06F 3/1285 Remote printer device, e.g. being remote from client or server
• CPC Class Codes: H04L 61/103 across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
• CPC Class Codes: H04L 67/025 for remote control or remote monitoring of applications
• CPC Class Codes: H04N 1/00204 with a digital computer or a digital computer system, e.g. an internet server programmed control between transmitter and receiver or between image input and image output device H04N1/32561
• CPC Class Codes: H04N 1/00244 with a server, e.g. an internet server fax-servers or the like for store and forward H04N1/324
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

An apparatus receives and analyzes a packet transmitted via a network, and performs network setting according to data included in the packet. Further, if it is determined that the received packet is a packet addressed to the apparatus and is not a setting packet for the network setting, the apparatus is controlled not to analyze the packet.

Claims

1. A communication apparatus comprising:

a reception unit configured to receive a packet transmitted from an external apparatus on a network;

a setting unit configured to set an IP address of the communication apparatus, based on a setting packet received by the reception unit; and

a controlling unit configured to maintain the setting unit in an enable state until the reception unit receives a predetermined packet, a type of which is different from a type of the setting packet, and put the setting unit into a disable state on condition that the reception unit receives the predetermined packet,

wherein the setting unit sets the IP address of the communication apparatus based on the setting packet received by the reception unit while the controlling unit maintains the setting unit in the enable state, and

wherein the setting unit does not set the IP address of the communication apparatus, after the controlling unit puts the setting unit into the disable state, even if the reception unit receives the setting packet.

4. The communication apparatus according to claim 1, further comprising:

a supply unit configured to supply the setting packet received by the reception unit to the setting unit according to a supply flag,

wherein the supply flag is in an ON state in the enable state of the setting unit, and the supply flag is in an OFF state in the disable state of the setting unit.

5. The communication apparatus according to claim 1, wherein the communication apparatus is a printing apparatus capable of performing printing processing.

6. The communication apparatus according to claim 1, wherein the controlling unit determines whether or not a packet received by the reception unit is the setting packet, based on identification information included in the packet received by the reception unit.

7. The communication apparatus according to claim 6,

wherein the identification information is port information, and

wherein, in a case where the port information indicates a specific port, the controlling unit determines that the packet received by the reception unit is the setting packet.

8. The communication apparatus according to claim 1, wherein the controlling unit returns the setting unit from the disable state to the enable state if the communication apparatus is turned on again.

2. A communication method comprising:

receiving a packet transmitted from an external apparatus on a network;

setting IP address of a communication apparatus, based on the received setting packet; and

controlling to maintain the setting in an enable state until the receiving receives a predetermined packet, a type of which is different from a type of the setting packet, and putting the setting into a disable state on condition that the receiving receives the predetermined packet,

wherein the setting sets the IP address of the communication apparatus based on the setting packet received while the controlling maintains the setting in the enable state, and

wherein the setting does not set the IP address of the communication apparatus, after the controlling puts the setting into the disable state, even if the receiving receives the setting packet.

3. A non-transitory computer readable medium for storing a computer-executable program of instructions for causing a computer to perform a communication method comprising:

receiving a packet transmitted from an external apparatus on a network;

setting an IP address of a communication apparatus, based on the received setting packet; and

controlling to maintain the setting in an enable state until the receiving receives a predetermined packet, a type of which is different from a type of the setting packet, and put the setting into a disable state on condition that the receiving receives the predetermined packet,

wherein the setting sets the IP address of the communication apparatus based on the setting packet received while the controlling maintains the setting in the enable state, and

wherein the setting does not set the IP address of the communication apparatus, after the controlling puts the setting into the disable state, even if the receiving receives the setting packet.

9. A communication apparatus comprising:

a reception unit configured to receive a packet transmitted from an external apparatus on a network;

a setting unit configured to set an IP address of the communication apparatus, based on a setting packet received by the reception unit; and

a controlling unit configured to, in a case where the reception unit receives a packet of which a destination MAC address corresponds to a MAC address of the communication apparatus and is different from the setting packet, change a state of the communication apparatus from an enable state in which the setting unit sets the IP address of the communication apparatus to a disable state in which the setting unit does not set the IP address of the communication apparatus,

wherein in a case where the communication apparatus is in the enable state, the setting unit sets the IP address of the communication apparatus based on the setting packet received by the reception unit, and

wherein in a case where the communication apparatus is in the disable state, even if the reception unit receives the setting packet, the setting unit does not set the IP address of the communication apparatus based on the setting packet received by the reception unit.

10. The communication apparatus according to claim 9, further comprising:

a supply unit configured to supply the setting packet received by the reception unit to the setting unit,

wherein in a case where the communication apparatus is in the enable state, the supply unit supplies the setting packet to the setting unit, and

in a case where the communication apparatus is in the disable state, the supply unit does not supply the setting packet to the setting unit.

11. The communication apparatus according to claim 9, wherein the communication apparatus is a printing apparatus capable of performing printing processing.

12. The communication apparatus according to claim 9, wherein in a case where the communication apparatus restarts, the controlling unit sets the communication apparatus such that the communication apparatus is put in the enable state.

13. A communication method of a communication apparatus comprising:

receiving a packet transmitted from an external apparatus on a network;

setting an IP address of the communication apparatus, based on a setting packet received by the receiving; and

changing, in a case where the receiving receives a packet of which a destination MAC address corresponds to a MAC address of the communication apparatus and is different from the setting packet, a state of the communication apparatus from an enable state in which the setting sets the IP address of the communication apparatus to a disable state in which the setting does not set the IP address of the communication apparatus,

wherein in a case where the communication apparatus is in the enable state, the setting sets the IP address of the communication apparatus based on the received setting packet, and

wherein in a case where the communication apparatus is in the disable state, even if the receiving receives the setting packet, the setting does not set the IP address of the communication apparatus based on the received setting packet.

14. A non-transitory computer readable medium for storing a computer-executable program of instructions for causing a computer to perform a communication method of a communication apparatus comprising:

receiving a packet transmitted from an external apparatus on a network;

setting an IP address of the communication apparatus, based on a setting packet received by the receiving; and

changing, in a case where the receiving receives a packet of which a destination MAC address corresponds to a MAC address of the communication apparatus and is different from the setting packet, a state of the communication apparatus from an enable state in which the setting sets the IP address of the communication apparatus to a disable state in which the setting does not set the IP address of the communication apparatus,

wherein in a case where the communication apparatus is in the enable state, the setting sets the IP address of the communication apparatus based on the received setting packet, and

wherein in a case where the communication apparatus is in the disable state, even if the receiving receives the setting packet, the setting does not set the IP address of the communication apparatus based on the received setting packet.