发明授权
- 专利标题: Asynchronous transmission system for binary-coded information
- 专利标题(中): 用于二进制编码信息的异步传输系统
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申请号: US210850申请日: 1980-11-26
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公开(公告)号: US4347617A公开(公告)日: 1982-08-31
- 发明人: Kazuo Murano , Kazuo Yamaguchi , Norio Murakami , Toshitaka Tsuda
- 申请人: Kazuo Murano , Kazuo Yamaguchi , Norio Murakami , Toshitaka Tsuda
- 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: JPX54/153403 19791127; JPX54/155009 19791130; JPX54/155010 19791130
- 主分类号: H04L25/30
- IPC分类号: H04L25/30 ; H04L25/49 ; H03K5/26
摘要:
An asynchronous transmission system for binary-coded information is disclosed. According to this system, in a transmitting terminal (A), when successive data of the same code in a set of asynchronous data lasts for a predetermined period of time (T.sub.1), a refresh pulse, the polarity of which is opposite to that of the successive data, is added to a transmission signal. However, the addition of such a refresh pulse to the transmission signal is inhibited for a predetermined period of time (T.sub.2) to allow for a change of data. In a receiving terminal (B), a pulse, the width of which is larger or equal to a minimum period of data, and a pulse, the width of which is smaller than or equal to a pulse-width (T.sub.0) of a refresh pulse, can be discriminated and removed by a pulse-width discrimination circuit. As a result, the refresh pulse is not present in the output signal of the pulse-width discrimination circuit. Thus, the original asynchronous data is restored.
公开/授权文献
- US5469476A Circuit and method for filtering voltage spikes 公开/授权日:1995-11-21