发明名称 |
Method and system for page detection using light attenuators |
摘要 |
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. |
申请公布号 |
US9361805(B2) |
申请公布日期 |
2016.06.07 |
申请号 |
US201414341088 |
申请日期 |
2014.07.25 |
申请人 |
GENERALPLUS TECHNOLOGY INC. |
发明人 |
Lo Li-Shang;Liao Tung-Tsai |
分类号 |
G01J4/00;G09B5/00 |
主分类号 |
G01J4/00 |
代理机构 |
Bacon & Thomas, PLLC |
代理人 |
Bacon & Thomas, PLLC |
主权项 |
1. A system for page detection using light attenuators, which is applied in a book to detect an opened page of the book, wherein the book has N pages and each page has a page detection area, where N is an integer greater than one, the system comprising:
at most M light attenuators installed side by side in the page detection area of each of the N pages for allowing an external light source to pass through the at most M light attenuators thereby attenuating intensity of the external light source, where M is an integer greater than one and M<N; M light sensing devices installed in an area of the book corresponding to the at most M light attenuators so as to detect attenuated intensities of the light source after the external light passes through the at most M light attenuators; and a controller connected to the M light sensing devices for determining the opened page based on a ratio of the intensities of the light source detected by the M light sensing devices on each page, wherein the at most M light attenuators are each a polarizer, and each of the at most M light attenuators has a different polarization angle for attenuating the intensity of the external light source according to the polarization angle. |
地址 |
Hsinchu TW |