Method and system for page detection using light attenuators

A system for page detection using light attenuators is applied in a book to detect an opened page of the book. The book has N pages and each page has a page detection area in which at most M light attenuators are installed in each page detection area. A light source passes through the at most M ligh...

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Bibliographische Detailangaben
Hauptverfasser:	LO LI-SHANG, LIAO TUNG-TSAI
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE COLORIMETRY CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING PHYSICS PLANETARIA RADIATION PYROMETRY SEALS TESTING
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Beschreibung
Zusammenfassung:	A system for page detection using light attenuators is applied in a book to detect an opened page of the book. The book has N pages and each page has a page detection area in which at most M light attenuators are installed in each page detection area. A light source passes through the at most M light attenuators for attenuating intensity of the light source. M light sensing devices are installed in an area of the book that corresponds to the page detection area. The M light sensing devices are used to detect attenuated intensities of the light source. A controller is connected to the M light sensing devices for detecting the opened page based on a ratio of the intensities of the light source detected by the M light sensing devices on each page.