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LED Driver Circuit with Threshold Voltage Compensation

University of Waterloo

BackgroundThe implementation of Thin-film Transistors (TFTs) in active-matrix liquid crystal and organic light-emitting diode (AMOLED) displays has created a $100B flat-panel display market. For AMOLED, a simple 2-TFT pixel circuit does not operate with sufficient electrical stability to maintain a constant OLED drive current that results in poor pixel uniformity across the display. Various pixel circuits and driving schemes have been proposed to compensate for this electrical instability...

Method and apparatus for communication between humans and devices

Queen's University

This invention relates to methods and apparatus for improving communications between humans and devices. The invention provides a method of modulating operation of a device, comprising providing an attentive user interface for obtaining information about an attentive state of a user; and modulating operation of a device on the basis of the obtained information, wherein the operation that is modulated is initiated by the device. Preferably, the information about the user's attentive state is...

VISION STRENGTHENING METHODS AND SYSTEMS

McGill University

Active dichoptic perceptual-learning tasks or dichoptic game play have been shown to significantly improve visual acuity of amblyopic children and adults. However, these dichoptic perceptual learning tasks are intensive and repetitive such that non-compliance is high. In contrast, the invention provides dichoptic perceptual learning in a manner that the user maintains its use and compliance is increased. Further, compliance becomes automatic if the user performs tasks in a normal manner and...

EMERGENCY DETECTION AND RESPONSE SYSTEM AND METHOD

University Health Network

Disclosed herein are automated emergency detection and response systems and methods, in accordance with different embodiments of the invention. In some embodiments, a system is provided for detecting and responding to a potential emergency event occurring in respect of a user in or near a designated area. The system comprises one or more sensors disposed in or near the area and a controller operatively coupled to the one or more sensors to receive sensor data therefrom indicative of the...

SYSTEMS AND METHODS FOR CONTROLLING USER INTERACTION WITH BIOFEEDBACK GAMING APPLICATIONS

University of Saskatchewan

Systems and methods of controlling user interaction with an application. The systems and methods include executing an application, providing a graphical overlay coupled to the application where the graphical overlay is configured to display a visualization or a visual effect, measuring at least one engagement characteristic to provide a measured condition and providing the visualization based on the measured condition. Examples of engagement characteristic include user physiological...

METHODS AND APPARATUSES FOR TONE MAPPING AND INVERSE TONE MAPPING

University of British Columbia

A method of producing at least one output image signal representing, at least, a plurality of output luminance values in an output range of luminance values is disclosed. The method involves: identifying a mapping function based at least in part on a perceptually scaled distribution of a plurality of input luminance values in an input range of luminance values different from the output range of luminance values; transforming the plurality of input luminance values into respective...

METHOD AND MODULE FOR IMPROVING IMAGE FIDELITY

University of Montreal

The present invention relates to a method and a module for improving image fidelity. For doing so, the present invention introduces noise (N) to at least one DAC value of at least some pixels, using one or multiple various patterns.

HOST MATERIALS FOR SINGLE-LAYER PHOSPHORESCENT OLEDS

Queen's University

New carbazole-based compounds are provided that are useful as host materials for single-layer and multilayer organic light-emitting diode (OLED) devices. Highly efficient single-layer OLEDs have been demonstrated using new N-heterocyclic carbazole-based host materials. Phosphorescent OLEDs with a structure of ITO/MoO3/host/host:dopant/host/Cs2CO3/Al have been fabricated in which the new host materials act simultaneously as electron-transport, hole-transport and host layer. Using this design,...

SYSTEM, METHOD AND APPARATUS FOR CO-LOCATING VISUAL IMAGES AND ASSOCIATED SOUND

Simon Fraser University

A system for co-locating visual images and associated sounds includes: (a) a screen for displaying the visual images at areas of its display surface, apparent locations of the visual images being selected from: corresponding zones defined within an immersive environment surrounding the screen, and the areas; and (b) sound exciters rendering an effect of the associated sounds originating from the apparent locations. The sound exciters may form sound walls distal from the screen and receive a...

DE-INTERLACING AND FRAME RATE UPCONVERSION FOR HIGH DEFINITION VIDEO

McMaster University

Technologies and implementations for de-interlacing an interlaced digital video and up-converting a frame rate of a digital video are generally disclosed.

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