发明申请
US20050080935A1 Device-side controller, host-side controller, communication controller, USB system, and packet communications method
审中-公开
设备侧控制器，主机侧控制器，通信控制器，USB系统和数据包通信方式
- 专利标题： Device-side controller, host-side controller, communication controller, USB system, and packet communications method
- 专利标题（中）： 设备侧控制器，主机侧控制器，通信控制器，USB系统和数据包通信方式
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申请号： US10951678申请日： 2004-09-29
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公开(公告)号： US20050080935A1公开(公告)日： 2005-04-14
- 发明人: Fumihiro Fukae , Hitoshi Naoe , Koji Sakai , Shohei Osawa
- 申请人： Fumihiro Fukae , Hitoshi Naoe , Koji Sakai , Shohei Osawa
- 优先权： JP2003-337952 20030929; JP2004-216495 20040723
- 主分类号： G06F13/12
- IPC分类号： G06F13/12 ; G06F3/00 ; G06F3/12 ; G06F13/00 ; G06F13/38 ; G06F13/40 ; G06F13/42 ; H04L1/00 ; H04L12/28
摘要：
A host-side control section of a host-side controller, when having received a SOF packet transmitted from a host to a device, avoids transmission of the received SOF packet to a device side. A device-side control section of a device-side controller transmits a SOF packet to the device at a predetermined interval after connection between the host and the device has been established. This eliminates the need for SOF packet transmission between the controllers. Thus, a communication bandwidth between the controllers of low communication speeds can be used only for packets other than the SOF packet. This increases communication efficiency of these other packets.
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