Abstract: A method and apparatus for ambient light detection and power control using photovoltaics is disclosed. In an embodiment, a device includes a display and a photovoltaic cell. The photovoltaic cell acts as both an ambient light sensor and a power source. Based on the detected ambient light level, the brightness of the display is increased or decreased to save power, and energy captured by the photovoltaic cell is converted into a useable power signal which is stored or used by device components.

Abstract: A method and apparatus for ambient light detection and power control using photovoltaics is disclosed. In an embodiment, a device includes a display and a photovoltaic cell. The photovoltaic cell acts as both an ambient light sensor and a power source. Based on the detected ambient light level, the brightness of the display is increased or decreased to save power, and energy captured by the photovoltaic cell is converted into a useable power signal which is stored or used by device components.

Abstract: A stent comprises a plurality of segments including a first balloon expandable segment which is not self-expanding, a second balloon expandable segment which is not self-expanding and a first self-expanding segment. The first self-expanding segment is disposed between the first and second balloon expandable segments. The segments are axially displaced from one another.

Abstract: In one embodiment the invention provides an impact-absorbing unit comprising an outer wear-resistant casing (10) and one or a plurality of inner stress resistant envelopes (20) containing impact absorbing material. The outer envelope is provided with a plurality of interconnection means (65, 70) on at least one surface thereof, whereby a plurality of such units can be connected together in a closely adjacent relationship to define a substantially continuous surface. In another embodimentthe compressible elements are directly enclosed within the casing (10).In another embodiment the loose fill of compressible elements is replaced by at least one open cell foam element and valve means are provided for evacuating air from the foam, whereby to compress the foam and allow subsequent expansion thereof by exposure to ambient air pressure.

Abstract: A stent comprises a plurality of segments including a first balloon expandable segment which is not self-expanding, a second balloon expandable segment which is not self-expanding and a first self-expanding segment. The first self-expanding segment is disposed between the first and second balloon expandable segments. The segments are axially displaced from one another.