发明授权
US5450548A Apparatus for performing data transfer synchronously or asynchronously
between device channels
失效
用于在设备通道之间同步或异步执行数据传输的设备
- 专利标题： Apparatus for performing data transfer synchronously or asynchronously between device channels
- 专利标题（中）： 用于在设备通道之间同步或异步执行数据传输的设备
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申请号： US330117申请日： 1994-10-27
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公开(公告)号： US5450548A公开(公告)日： 1995-09-12
- 发明人: Hitoshi Matsushima
- 申请人： Hitoshi Matsushima
- 申请人地址： JPX Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX3-041649 19910307
- 主分类号： G06F3/06
- IPC分类号： G06F3/06 ; G06F13/10 ; G06F13/12 ; G06F13/00
摘要：
A data transfer system in a device control apparatus for controlling data transfer between a channel of a central processing unit and a device, comprising: a channel transfer circuit for transferring data to the channel and for receiving data from the channel; a device transfer circuit for transferring data to the device and for receiving data from the device, and an intermediate memory for temporarily storing transfer data from the channel or from the device transfer circuit only when the transfer rate determined by the channel is different from the transfer rate determined by the device.
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