Abstract: A dynamic free-space-optical femto-cell (DFF) communication system is disclosed. The system operates to allow bi-directional communication between transceiver and receivers using free space optics and line of sight alignment and tracking. The system dynamically adjusts beam direction and beam shape in order to maximize power efficiency and maintain line of sight using beam steering and beam forming. The result is greatly reduced power requirement, improved security and dynamic mobility.

Abstract: This disclosure provides systems and methods for illumination systems with one or more reflective structures over a light guide. In one aspect, each reflective structure can have an absorber structure with a width greater than a width of the reflective structure. The absorber structure can have overhanging portions that are in parallel with and laterally protrude past one or more edges of the reflective structure, or the absorber structure can have enclosing portions that substantially enclose the reflective structure. The reflective structures can include light-turning features, such as facets, and/or conductive wires, such as touch sensor wires.

Abstract: This disclosure provides systems and methods for illumination systems with one or more reflective structures over a light guide. In one aspect, each reflective structure can have an absorber structure with a width greater than a width of the reflective structure. The absorber structure can have overhanging portions that are in parallel with and laterally protrude past one or more edges of the reflective structure, or the absorber structure can have enclosing portions that substantially enclose the reflective structure. The reflective structures can include light-turning features, such as facets, and/or conductive wires, such as touch sensor wires.

Abstract: A touch sensor may include thin, conductive wires as at least some of the sensor electrodes. Some or all of the conductive wires may be metal wires. The sensor electrodes may not be noticeable to a human observer. In some such implementations, the sensor electrodes may be laid out in a pattern and/or grouped to create a spatial gradient. Some such implementations involve spatial interweaving, spatial interposing and/or length modulation of sensor electrodes. Such implementations can create a spatial gradient such that fewer rows and columns are required to provide a touch sensor panel with a given level of accuracy.

Abstract: A field-sequential color architecture is included in a reflective mode display. The reflective mode display may be a direct-view display such as an interferometric modulator display. The reflective mode display may include three or more different subpixel types, each of which corresponds to a color. Data for each color may be written sequentially to all subpixels of the display. Flashing of a corresponding colored light, e.g., from a front light of the display, may be timed to immediately follow a process of writing data for that color. Colors other than the field color may be used to produce grayscale. The field color may correspond to the most significant bit (MSB) and the other colors may correspond to other bits.

Abstract: An analog to digital conversion architecture defining a process of converting an analog signal into equivalent digital signal which uses a method comprising of a set of functional units, each capable of performing parametric analog to digital conversion, connected in special arrangement such that each functional unit receives as input a set of parameters which are directly connected to output bits produced by a subset of functional units which are assigned to produce bits of higher significance. The method of analog to digital conversion wherein a function that defines the relationship between the input parameters, analog input value, a given reference value and a set of output bits can be implemented in a single device hence largely simplifying the analog to digital conversion process and making conversion faster and more efficient.