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Construction and Improvement of Three-dimensional Display System Based on Shutter Glassess

Author: DongBin
Tutor: CaoXueHong
School: Nanjing University of Posts and Telecommunications
Course: Signal and Information Processing
Keywords: Stereoscopic shutter glasses RF synchronization infrared pulse nRF24L01
CLC: TN873
Type: Master's thesis
Year: 2013
Downloads: 26
Quote: 0
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Abstract


This paper introduces frame sequence stereoscopic display technology and how the driveworks based on further research about the NVIDIA three-dimensional products. Analysis of theworking principle of3D video and corresponding synchronous signal processing programmingframework is mentioned. RF synchronization used in the shutter glasses stereoscopic displaysystem, has more advantages than the infrared, which solves the limitations of space infraredsynchronization.When unable to obtain the synchronous signal directly, an alternative approach is to use avertical synchronization signal and infrared pulse. Vsync extraction circuit based on DVIinterface,it extract a single sync pulse out of the DVI blue signal and solve the problem of timesynchronization. High-speed infrared diode used for receiving infrared pulse, Synchronizationinformation hidden in the infrared pulse.After both are available, a real-time analysis programhelp to identify the current picture belongs to the left eye or right eye. Of course, the premise isthe infrared protocol is known.The system adopts nRF24L01wireless RF chip to transmit synchronous signal.Radiocommunication is easy to receive the same frequency interference, therefore the use of frequencyhopping technology means to improve the RF communication anti-jamming and reliability ofdata.Auto-answer and automatic retransmission makes the delay calculation very complex,dynamic correction algorithm improves the fault tolerance of delay calculation. The actual testresults prove that the glasses work well.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display
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