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Tagawa; Koichi
Tokyo, JP
No. of patents:

Patent Number Title Of Patent Date Issued
4896209 Passenger vehicle polling system having a central unit for polling passenger seat terminal units January 23, 1990
A passenger vehicle polling system. The system is capable of polling one or more terminal units, where each terminal unit is provided at a different one of a plurality of passenger seats in a passenger vehicle, to obtain information indicative of the state of each terminal unit. The poll
4866515 Passenger service and entertainment system for supplying frequency-multiplexed video, audio, and September 12, 1989
A service and entertainment system for transmitting video signals, audio signals and television game software signals from a central transmitting apparatus to each of a plurality of terminal units mounted at respective passenger seats in a passenger vehicle such as aircraft or the like,

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