Interconnection of local communication bus system
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United States of America Patent
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May 19, 1998
Issued Date -
N/A
app pub date -
Feb 21, 1997
filing date -
Mar 31, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a local communication system comprising a number of devices (14,16) interconnected by a first data bus (20) supporting a first set of communication protocols, and at least one further device (10) connected to a second bus (12) not supporting those protocols, a gateway device (18) is provided linking the first and second data buses enabling communications therebetween. The first set of protocols specifies a maximum time for response by a first device to a request sent by a second device. When a request is sent from a device (14) on the first bus to the further device (10), the gateway (18) times the request and, if no response is received from the further device within the specified maximum response time, the gateway (18) generates and sends a temporary response to the requesting device (14). The system may comprise two or more clusters of devices, each being linked to the further bus (12) by respective gateway devices (18,22).
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