- 专利标题： Communication system and communication apparatus controlling a switching hub for power saving
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申请号： US13298016申请日： 2011-11-16
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公开(公告)号： US09853821B2公开(公告)日： 2017-12-26
- 发明人: Hiroki Ito
- 申请人： Hiroki Ito
- 申请人地址： JP Tokyo
- 专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人： CANON KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo
- 代理机构： Canon U.S.A., Inc. IP Division
- 优先权： JP2008-125876 20080513
- 主分类号： H04L12/12
- IPC分类号： H04L12/12 ; H04L12/24
摘要：
A CPU of an image forming apparatus controls, according to establishment of a sleep change condition, a MAC/PHY in a network unit to change the image forming apparatus from a link-up state to a link-down state. The CPU controls the image forming apparatus to change from a normal mode to a deep sleep mode. A CPU of the network unit controls, according to the change of the image forming apparatus from the normal mode to the deep sleep mode, the MAC/PHY to change the link-down state of the image forming apparatus to the link-upstate. The CPU controls the MAC/PHY to transmit a MAC address necessary for causing the image forming apparatus to participate in VLAN to a switching hub.