发明授权
- 专利标题: Attribute reporting over a PS/2 protocol
- 专利标题(中): 通过PS / 2协议报告属性
-
申请号: US10863996申请日: 2004-06-09
-
公开(公告)号: US06874038B2公开(公告)日: 2005-03-29
- 发明人: Brian D. Williams , Theron S. Welch
- 申请人: Brian D. Williams , Theron S. Welch
- 申请人地址: US WA Redmond
- 专利权人: Microsoft Corporation
- 当前专利权人: Microsoft Corporation
- 当前专利权人地址: US WA Redmond
- 代理商 Ronald M. Anderson
- 主分类号: G06F1/26
- IPC分类号: G06F1/26 ; G06F3/00 ; G06F3/023 ; G06F3/038 ; G06F13/10
摘要:
Reporting an attribute of a device via PS/2 protocols to a host executing an industry standard PS/2 port driver that does not include explicitly recognize the attribute. For example, a wireless mouse reports a battery state and a signal quality state through a standard PS/2 port driver that does not recognize any command or identifier for battery state or signal quality state. The attribute state is encoded in a standard PS/2 data packet. The standard PS/2 data packet is uniquely identified as an attribute packet by encoding data corresponding to highly unlikely mouse movement. A filter driver running on the host activates transmission of the attribute packets by commanding the port driver to issue a unique sequence of standard PS/2 commands, which the mouse system recognizes. The filter driver intercepts incoming PS/2 data packets, recognizes the unlikely data values that identify an attribute packet, and decodes the attribute state.
公开/授权文献
- US20040249988A1 ATTRIBUTE REPORTING OVER A PS/2 PROTOCOL 公开/授权日:2004-12-09
信息查询