发明授权
- 专利标题： Host apparatus and information processing system using the same
- 专利标题（中）： 主机设备和信息处理系统使用相同
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申请号： US12755748申请日： 2010-04-07
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公开(公告)号： US08296593B2公开(公告)日： 2012-10-23
- 发明人: Akio Takamoto
- 申请人： Akio Takamoto
- 申请人地址： JP Tokyo
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Nutter McClennen & Fish LLP
- 代理商 John J. Penny, V
- 优先权： JP2005-345390 20051130
- 主分类号： G06F1/32
- IPC分类号： G06F1/32
摘要：
In an information processing system, a host apparatus and a device are communicatively connected such that the host apparatus serves as a master and the device serves as a slave. The device is configured to establish a power-saving mode, when any command is not received from the host apparatus for a prescribed time period. A device driver is provided in the host apparatus. The device driver is configured to transit from a normal state to a suspended state when an operation command for operating the device is not received from an application running in the host apparatus for a prescribed time period, and to transmit a dummy response to the application, when an inquiry command is received from the application while the device driver is placed in the suspended state, without notifying the inquiry command to the device.