Communication apparatus, method of controlling the communication apparatus,and program
AssigneeCanon Kabushiki Kaisha
InventorKatsuhiro Wada
Life of this patent
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Abstract
In an apparatus that can be connected to an external apparatus to which multiple addresses are allocated over a network, a packet including certain identification information is transmitted to the external apparatus by using a first address as a destination. If a packet that is received includes the certain identification information, a source address of the received packet is extracted. If the extracted source address is a second address different from the first address, the second address is used as the destination in the subsequent transmission of a packet to the external apparatus.
Claims18
An apparatus that can be connected to an external apparatus to which a plurality of addresses are allocated over a network, the apparatus comprising:
- a transmitting unit configured to transmit a first packet including certain identification information to the external apparatus using a first address in the plurality of addresses as a destination;
- a receiving unit configured to receive a second packet transmitted from the external apparatus;
- an extracting unit configured to, if the certain identification information is included in the second packet, extract a source address of the second packet;
- and
- a control unit configured to, if the extracted source address is a second address, control a subsequent transmission of a third packet to the external apparatus so as to use the second address as the destination.
A method of controlling an apparatus that can be connected to an external apparatus to which a plurality of addresses are allocated over a network, the method comprising:
- transmitting a first packet including certain identification information to the external apparatus using a first address in the plurality of addresses as a destination;
- receiving a second packet transmitted from the external apparatus;
- extracting, if the certain identification information is included in the second packet, a source address of the second packet;
- and
- controlling, if the extracted source address is a second address, a subsequent transmission of a third packet to the external apparatus so as to use the second address as the destination.
Dependencies are inferred from the claim text.