Gaming system for individual control of access to many devices with few wires
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United States of America Patent
Stats
-
Dec 9, 2008
Grant Date -
Oct 7, 2004
app pub date -
Mar 22, 2001
filing date -
Mar 22, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system controls access to plural devices with only four lines by grouping the devices in nodes, each node including a predetermined number of the devices and a local control circuit defining a shift register with positions respectively connected to the devices. The nodes are connected in series with a host controller, to form a system shift register. The nodes are serially addressed by a serial data message from a DATA OUT line of the host controller, which message includes M.times.N data bits followed by a strobe indicator, where N is the number of nodes and M is the number of devices at each node. All controllers are connected to a V+ line and a COMMON line and a RETURN line. The system register forms a fourth line, with one end connected to the host controller DATA OUT terminal and the other end connectable to the RETURN line.
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