发明名称 |
Interface circuit for communicating between two data highways |
摘要 |
An interface circuit for use in a data transmission system is designed to be used not only between a highway and a device but also to link highways and can be commanded to enter a status in which commands sent to it on one highway are modified and sent out as commands on a second highway so that a controller device on the one highway can control devices not only on that highway but also on the second highway, with extension, if desired, to a third highway or beyond. To achieve this, the interface circuit has two ports each for connection to a respective one of two substantially identical highways, and status control means responsive to signals received at either port to establish different statuses of the interface. For inter-highway communication, the status control means is responsive to a command signal of particular form at either port to produce a modified command signal at the other port.
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申请公布号 |
US4047162(A) |
申请公布日期 |
1977.09.06 |
申请号 |
US19750572052 |
申请日期 |
1975.04.28 |
申请人 |
THE SOLARTRON ELECTRONIC GROUP LIMITED |
发明人 |
DOREY, HOWARD ANTHONY;COOKE, ROBERT JOHN |
分类号 |
G06F13/40;G06F13/42;(IPC1-7):G06F3/04 |
主分类号 |
G06F13/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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