Abstract: A system is provided for determining a location of a receiver in an enclosed space whereby its location is obtained based on information associated with at least two transmitters that are provided within the enclosed pace. In particular, once the images of the transmitters are captured by an image capturing module provided within the receiver, the receiver is configured to process the captured image, and based on the outcome of this process, to determine its location in the enclosed space.

Abstract: According to embodiments of the invention, apparatuses and devices are directed towards a modular electrofluidic display. The electrofluidic display may be capable of displaying imagery both on a front side and a rear side of a display. This is carried out by adding a fourth oil layer to a display panel which traditionally may have employed two or three oil layers. In a traditional display mode, the color of the oil on the fourth layer may serve as the background color of the pixel. Light from the rear is blocked by the fourth oil layer. In a mode where both sides of the display are required to display images, the oil in the background layer may be displaced with a voltage applied so that light can traverse to all the colored oils from both front end as well as the back end of the display.

Abstract: A method for enabling indoor positioning of a mobile receiver, including: detecting an orientation of the mobile receiver; measuring light intensities using at least three effective visible light receiving areas positioned on the mobile receiver, wherein the at least three effective visible light receiving areas are orientated such that a measurement of light intensity of a light from the same light source by each of the at least three effective visible light receiving areas is different from the others; and producing an output which enables a 3-dimensional indoor positioning of the mobile receiver relative to a second coordinate system.