George T. Valliath

Design of Hologram for Brightness Enhancement in Color LCDs

Transmission holographic film for brightness enhancement in full color reflective LCDs is proposed. The hologram is attached to the front of the LCD. The goal is paper-like brightness within the viewing zone under typical ambient lighting conditions. Optimum viewing and illumination angles have been identified. Modeling and measurements on holograms show that a viewing zone of 20° × 40° will provide a 12× film gain which is adequate to maintain a wide color gamut and brightness.

Applying telepresence to incident management: The virtual incident command center

This paper describes an application of telepresence technology to the incident management domain. The system combines national guidelines for incident management with many aspects of collaborative virtual environments to enable effective communication between first responders in the field and remotely located command personnel. A brief overview of existing incident management systems is given, followed by a set of requirements for future systems. We then describe our virtual incident command center (VICC) prototype, explain how it addresses the requirements, and outline our future plans. Finally, we report feedback from ongoing demonstrations of the prototype system that supports our contention that VICC represents a unique solution to the incident management problem.

Mobile visual communications and displays

The different types of mobile visual communication modes and the types of displays needed in cellular handsets are explored. The well-known 2-way video conferencing is only one of the possible modes. Some modes are already supported on current handsets while others need the arrival of advanced network capabilities to be supported. Displays for devices that support these visual communication modes need to deliver the required visual experience. Over the last 20 years the display has grown in size while the rest of the handset has shrunk. However, the display is still not large enough - the processor performance and network capabilities continue to outstrip the display ability. This makes the display a bottleneck. This paper will explore potential solutions to a small large image on a small handset.