Vishay hosts video webinar on 3DTV active glasses infrared receivers
January 07, 2011 // Julien Happich
Vishay Intertechnology recently added a video webinar on its website, detailing how infrared receivers work in 3DTV active shutter glasses. The infrared receiver is used in 3DTV glasses where it receives a synchronization signal from the 3D television set and opens and closes LCD shutters in each lens of the glasses to create the stereoscopic 3DTV effect.
Vishay's TSOP75D25 and TSOP35D25 infrared receivers were developed specifically for the LCD shutter glasses application. The receivers operate on a carrier frequency of 25 kHz, which is lower than that used by standard remote control systems and thus helps avoid possible interference from TV and set-top box remote controls.
To further avoid the possibility of interference, the TSOP75D25 and TSOP35D25 are designed to receive the 3D synchronization signals from an 830nm or 850nm emitter, rather than on the 940nm wavelength used by remote control emitters for TVs and set-top boxes. The devices suppress optical noise from compact fluorescent lights, LCD backlights, and plasma panels.
They integrate a photodiode, amplifier, automatic gain control, band pass filter, demodulator, and control IC into a single tiny package, which helps minimize the weight of 3DTV active glasses, while their ultra-low current consumption maximizes the battery life. Because these new IR receivers receive modulated synchronization signals versus baseband signals, a single emitter can be used in the TV to achieve a synchronize transmit distance of more than 26 meters.
The surface mount devices that can be mounted in a side or top view. They both have a viewing angle of ± 50° which allows for significant head movement without signal loss. The TSOP75D25 measures 2.3x3.0x6.8mm and has dual lenses while the TSOP35D25 measures 4.0x5.3x7.5mm and has a single lens.
The 3DTV active glasses webinar can be viewed at http://www.vishay.com/landingpage/videos/opto_webinar_3d.html
Visit Vishay Intertechnology at www.vishay.comAll news
Can Kevlar prevent lithium-ion battery fire risks?
January 28, 2015
University of Michigan researchers have used nanofibers extracted from Kevlar to develop a barrier between the electrodes ...
VTT sets up Cyber War Room
320x320-mm OLED panel claims world's highest lumen-price ratio
Yugo Systems externalizes FPGA debug with new hardware
Rambus readies lensless image sensor platform
Securing the software supply chain
January 28, 2015
The latest attack on Sony Pictures by malicious hackers continues to evolve as an international story line. What we know ...
Connected Car: Dramatic growth ahead
The automation obituaries
TSVs to split more chips: re-integration is the focus
- Sensing Elements for Current Measurements
- Investigating Die attach Failure in IGBTs using Power Cycling Tests
- Power Semiconductor Failure Diagnosis using Thermal Characterization and Power Cycling
- Top 5 Trends in Product Development and Test Engineering
InterviewCEO interview: Bosch's IoT startup is all about the system
Thorsten Mueller, CEO of Bosch Connected Devices and Solutions GmbH (Reutlingen, Germany), has been guiding the latest startup subsidiary of Robert Bosch GmbH since 2013 when he started the initiative ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
To ensure you have a good start in 2015, Freescale is giving away five of its QorIQ TWR-LS1021A Tower system modules, worth USD269 each, for EETimes Europe's readers to win.
The module is the most feature-rich and high-performance Tower system offered by Freescale, enabling compatibility and interoperability with the growing list of Tower expansion modules, offering an easily accessible...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.