System and method for processing passenger service system information
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United States of America Patent
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Dec 29, 1998
Grant Date -
N/A
app pub date -
Sep 13, 1996
filing date -
Sep 13, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Implemented on a vehicle, a digital in-transit entertainment system that assists in providing passenger services to a plurality of end nodes of a vehicle. The system includes a multi-drop digital communication bus, preferably configured to support RS-485 standards. A plurality of zone bridge units ('ZBUs') and a system manager unit ('SMU') are coupled to the digital communication bus. At least one ZBU is responsible for signaling headend equipment to perform a requested passenger service. The SMU is also designed to signal another type of equipment if implemented in lieu of the first type. Both the ZBUs as well as the SMU are designed to contain PSS status information for every end node of the vehicle to maintain coherency.
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