In this paper, a design of LED display control system based on ARM and FPGA is proposed, according to module structure characteristics of the RGB three colors LED display and the dynamic scanning display of the LED display which is achieved by FPGA technology, this system uses ARM chip S3C2240 as the control core. with the help of the programmable logic device auxiliary, it completed the data s...

Background: It has been shown that short-wavelength blue component of the visible light spectrum can alter the circadian rhythm and suppress the level of melatonin hormone. The short-wavelength light emitted by smartphones’ screens can affect the sleep quality of the people who use these devices at night through suppression of melatonin.Objectives: In this study, we examined the effects of co...

We present a novel walk-through 3D display based on the patented FogScreen, an “immaterial” indoor 2D projection screen, which enables high-quality projected images in free space. We extend the basic 2D FogScreen setup in three major ways. First, we use head tracking to provide correct perspective rendering for a single user. Second, we add support for multiple types of stereoscopic imagery. Th...

We introduce prototype system for interactive exploration of volumetric data using a tangible screen, called ”Volume Slicing Display.” The system tracks the shape and the position of a screen on 3D space using a custom monocular high-speed vision system, then projects the corresponding slice of a 3D virtual object on the screen surface in real time. This experimental interface thus enables user...

The performance of a commercially available liquid crystal TV display was characterized in terms of its modulation depth. Measurements of screen transmittance and modulation depth, as a function of signal level, showed that the primary limitations of the device as a spatial light modulator were due to the nature of the video scan format and the display drive electronics. The resolution of the d...

We have constructed the discourse component for a multimodal user-interface dialogue system. The larger system acts as a conversational agent engaged in dialogue with the human user. Output originating with the backend application system can take the eventual form of spoken English utterances, printed English text, or changes in the graphical display screen, e.g., appearance, disappearance, mov...

In recent years, we have witnessed the strong growth of cloud computing, which refers to both applications delivered as services over the Internet and the infrastructure (including both hardware and software systems) in the data centers that supports those services. In general, cloud computing provides a centralized platform where programs can be executed and data can be stored. Cloud services ...

We present a preliminary study examining non-visual menu navigation in terms of task completion times and cognitive workload. We asked 12 participants to locate items on menus presented using visual, audio-only and audio-tactile displays on a touch screen mobile device and found that users were significantly slower in locating an item on a menu when using an audio-tactile menu display. This dif...