Device for showing image installed in subway tunnel

PURPOSE: A subway tunnel image apparatus is provided to enable a passenger in a subway train to see an advertisement image projected on the window of the subway train with the speed of the subway train being controlled at a constant value with a sensor installed on the outer side thereof. CONSTITUTI...

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Bibliographische Detailangaben
1. Verfasser:	HAN, SEONG RYEOL
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ADVERTISING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION LABELS OR NAME-PLATES PHYSICS SEALS SIGNS
Online-Zugang:	Volltext bestellen
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