公开(公告)号：US07831748B2

公开(公告)日：2010-11-09

申请号：US10915065

申请日：2004-08-10

申请人： Mitchell Stephen Dernis ,  Ankur Varma ,  Wei Guo ,  Eiko Junus ,  Gregory George Williams ,  Harjit Singh

发明人： Mitchell Stephen Dernis ,  Ankur Varma ,  Wei Guo ,  Eiko Junus ,  Gregory George Williams ,  Harjit Singh

IPC分类号： G06F3/00 ,  G06F13/20 ,  G06F13/00 ,  H04L12/56 ,  H04L12/28

CPC分类号： G06F13/4282

摘要： An extension to the Universal Serial Bus (USB) protocol that utilizes reserved bits in the OHCI Endpoint Descriptors to signal which root hub port(s) should transmit the data. Typically, all ports transmit (broadcast) data. The present invention encodes transmission information that can be used by the hardware to effectively control which port(s) need to be tri-stated. However, by setting, the “on” bits for all the ports, the present invention retains standard USB functionality. Also provided is a method to increase the bandwidth of low speed devices connected to the USB bus by increasing the data payload for such devices.

摘要翻译： 通用串行总线（USB）协议的扩展，利用OHCI端点描述符中的保留位来指示哪个根集线器端口应传输数据。 通常，所有端口都发送（广播）数据。 本发明编码可由硬件使用的传输信息，以有效地控制哪个端口需要被三态化。 然而，通过设置所有端口的“开”位，本发明保持标准的USB功能。 还提供了通过增加这种设备的数据有效载荷来增加连接到USB总线的低速设备的带宽的方法。