Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both hands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both hands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both hands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: An optical beam deflection device includes a dual-twist Pancharatnam phase device (DTPPD) with first and second Pancharatnam layers each with an in-plane twist and a transverse twist that is at least 60° over the thickness of each Pancharatnam layer, and more preferably at least 75°, and still more preferably at least 90°, with the twist sense of the second Pancharatnam layer being opposite the twist sense of the first Pancharatnam layer. To provide switchable beam deflection, an electro-optic polarization element inputs a circularly polarized light beam to the DTPPD with left-handed circular polarization or right-handed circular polarization controlled by an electrical input.

Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both hands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: An optical magnification system comprises two Pancharatnam lenses, and provides a first magnification for left-hand circularly polarized light and a second magnification different from the first magnification for right-hand circularly polarized light. An optical magnification system comprises two lenses, each having different focal lengths for left-handed and right-handed circularly polarized light, respectively, and configured to provide a first magnification for left-handed circularly polarized light and a second magnification different from the first magnification for right-handed circularly polarized light.

Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both hands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: An optical beam deflection device includes a dual-twist Pancharatnam phase device (DTPPD) with first and second Pancharatnam layers each with an in-plane twist and a transverse twist that is at least 60° over the thickness of each Pancharatnam layer, and more preferably at least 75°, and still more preferably at least 90°, with the twist sense of the second Pancharatnam layer being opposite the twist sense of the first Pancharatnam layer. To provide switchable beam deflection, an electro-optic polarization element inputs a circularly polarized light beam to the DTPPD with left-handed circular polarization or right-handed circular polarization controlled by an electrical input.

Abstract: An optical magnification system comprises two Pancharatnam lenses, and provides a first magnification for left-hand circularly polarized light and a second magnification different from the first magnification for right-hand circularly polarized light. An optical magnification system comprises two lenses, each having different focal lengths for left-handed and right-handed circularly polarized light, respectively, and configured to provide a first magnification for left-handed circularly polarized light and a second magnification different from the first magnification for right-handed circularly polarized light.

Abstract: A computing system utilizing coordinated two-hand command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, including the sensing of command gestures by the user to provide input to the apparatus, a processor, wherein operation of the processor includes interpretation of the command gestures of the user and the implementation of actions in response to the command gestures, and a display screen to display elements to the user, where the display screen may display one or more elements use in command gestures, where command gestures include coordinated two-hand command gestures of the user.

Abstract: A computing system utilizing three-dimensional manipulation command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of the user to provide input to the apparatus, and a display screen to provide a display. The command gestures include one or more command gestures to manipulate at least a portion of the display, the one or more command gestures being gestures including motion along an axis between the display screen and the user.

Abstract: A phase retarder comprises first and second ?-cells or other tunable birefringent devices arranged optically in series. The phase retardation value of the phase retarder is a difference between the phase retardation values of the first and second ?-cells. Driving circuitry drives the phase retarder to generate a target phase retardation value by: (1) prior to a relaxation period, biasing the ?-cells to produce the target phase retardation value; (2) during the relaxation period, biasing the first ?-cell at a constant bias value; and (3) during the relaxation period, lowering the bias value of the second ?-cell continuously or stepwise to maintain the target phase retardation value for the phase retarder throughout the relaxation period. In some embodiments the operation (2) comprises applying zero bias to the first ?-cell throughout the relaxation period. In some embodiments the operation (1) comprises applying a maximum operational bias to the second ?-cell.

Abstract: A transition mechanism for a computing system utilizing user sensing. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of user gestures to provide input to the apparatus, and a light generation element to generate a light to indicate existence of a virtual boundary of the apparatus. The computing device is to change from a first state to a second state upon the sensing element sensing that at least a portion of the user is within the virtual boundary.

Abstract: A phase retarder comprises first and second ?-cells or other tunable birefringent devices arranged optically in series. The phase retardation value of the phase retarder is a difference between the phase retardation values of the first and second ?-cells. Driving circuitry drives the phase retarder to generate a target phase retardation value by: (1) prior to a relaxation period, biasing the ?-cells to produce the target phase retardation value; (2) during the relaxation period, biasing the first ?-cell at a constant bias value; and (3) during the relaxation period, lowering the bias value of the second ?-cell continuously or stepwise to maintain the target phase retardation value for the phase retarder throughout the relaxation period. In some embodiments the operation (2) comprises applying zero bias to the first ?-cell throughout the relaxation period. In some embodiments the operation (1) comprises applying a maximum operational bias to the second ?-cell.

Abstract: A computing system utilizing coordinated two-hand command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, including the sensing of command gestures by the user to provide input to the apparatus, a processor, wherein operation of the processor includes interpretation of the command gestures of the user and the implementation of actions in response to the command gestures, and a display screen to display elements to the user, where the display screen may display one or more elements use in command gestures, where command gestures include coordinated two-hand command gestures of the user.

Abstract: A computing system utilizing three-dimensional manipulation command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of the user to provide input to the apparatus, and a display screen to provide a display. The command gestures include one or more command gestures to manipulate at least a portion of the display, the one or more command gestures being gestures including motion along an axis between the display screen and the user.

Abstract: A transition mechanism for a computing system utilizing user sensing. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of user gestures to provide input to the apparatus, and a light generation element to generate a light to indicate existence of a virtual boundary of the apparatus. The computing device is to change from a first state to a second state upon the sensing element sensing that at least a portion of the user is within the virtual boundary.

Abstract: A mechanism to provide visual feedback regarding computing system command gestures. An embodiment of an apparatus includes a sensing element to sense a presence or movement of a user of the apparatus, a processor, wherein operation of the processor includes interpretation of command gestures of a user to provide input to the apparatus; and a display screen, the apparatus to display one or more icons on the display screen, the one or more icons being related to the operation of the apparatus. The apparatus is to display visual feedback for a user of the apparatus, visual feedback including a representation of one or both bands of the user while the one or both hands are within a sensing area for the sensing element.

Abstract: A system, apparatus and method to reduce power consumption for displays is described. The method may include receiving image data comprising a plurality of color components, generating a histogram for each of the plurality of color components, and adjusting each of a plurality of light sources based on the histograms. The plurality of light sources may correspond to the plurality of color components. Other embodiments are described and claimed.

Abstract: A system, apparatus and method to reduce power consumption for displays is described. The method may include receiving image data comprising a plurality of color components, generating a histogram for each of the plurality of color components, and adjusting each of a plurality of light sources based on the histograms. The plurality of light sources may correspond to the plurality of color components. Other embodiments are described and claimed.