Abstract: A method of driving a pixel element in a matrix of pixel elements includes (1) setting the bias voltage of a first transistor to a value that is substantially close to a threshold voltage of the first transistor by changing a voltage across a first capacitive element with a current passing through the first transistor; (2) setting the bias voltage of the first transistor to a value that is different from the threshold voltage of the first transistor; and (3) causing a change of the bias voltage of the first transistor.

Abstract: A method of driving a pixel element in a matrix of pixel elements includes (1) setting the bias voltage of a first transistor to a value that is substantially close to a threshold voltage of the first transistor by changing a voltage across a first capacitive element with a current passing through the first transistor; (2) setting the bias voltage of the first transistor to a value that is different from the threshold voltage of the first transistor; and (3) causing a change of the bias voltage of the first transistor.

Abstract: Method and apparatus for interacting with a display screen. A remote control comprises a viewing screen. The method includes determining the boundary of a quadrilateral on the viewing screen having a shape thereof depending upon at least one of the location of the viewing screen and the surface orientation of the viewing screen. The method also includes the following: displaying a boundary-identifier to specify the boundary of said quadrilateral on the viewing screen that is substantially transparent; detecting one or more positions being touched on the viewing screen; and determining at least one mapped position on the display screen under a mapping operative to map said quadrilateral on the viewing screen to a rectangular on the display screen under a prospective transform.

Abstract: A method of driving a pixel element in a matrix of pixel elements includes (1) setting the bias voltage of a first transistor to a value that is substantially close to a threshold voltage of the first transistor by changing a voltage across a first capacitive element with a current passing through the first transistor; (2) setting the bias voltage of the first transistor to a value that is different from the threshold voltage of the first transistor; and (3) causing a change of the bias voltage of the first transistor.

Abstract: A method of driving a pixel element in a matrix of pixel elements includes (1) setting the bias voltage of a first transistor to a value that is substantially close to a threshold voltage of the first transistor by changing a voltage across a first capacitive element with a current passing through the first transistor; (2) setting the bias voltage of the first transistor to a value that is different from the threshold voltage of the first transistor; and (3) causing a change of the bias voltage of the first transistor.

Abstract: A display device includes a display cover screen, a two-dimensional matrix of photo-detecting elements constructed on a first substrate that is visually transparent, and a matrix of pixel elements constructed on a second substrate. The first substrate is sandwiched between the display cover screen and the second substrate.

Abstract: A display device includes a display cover screen, a two-dimensional matrix of photo-detecting elements constructed on a first substrate that is visually transparent, and a matrix of pixel elements constructed on a second substrate. The first substrate is sandwiched between the display cover screen and the second substrate.

Abstract: A method of driving a pixel element an active matrix display. The method inducing a change of the bias voltage of the first transistor towards its threshold voltage with an essentially constant current provided from the semiconductor channel of a field effect transistor to cause the bias voltage of the first transistor linearly depend upon the time lapse since the light-emitting element starts to emit light. The method also includes terminating light emitted from the light-emitting element after the bias voltage of the first transistor becomes substantially close to the threshold voltage of the first transistor.

Abstract: Method of writing a pixel data into a pixel element having at least one switching transistor, at least one nonlinear element, and at least one capacitive element. The method includes (1) setting both the semiconductor channel of the at least one switching transistor and the at least one nonlinear element into conducting states, and causing a voltage applied across the at least one capacitive element while the semiconductor channel of the at least one switching transistor maintains at conducting state and the at least one nonlinear element maintains at conducting state; and (2) after said causing, driving the at least one nonlinear element into non-conducting state from conducting state, and driving the semiconductor channel of the at least one switching transistor into non-conducting state from conducting state for settling the semiconductor channel into non-conducting state after the at least one nonlinear element is settled into non-conducting state.

Abstract: A method of interacting with a television screen using a remote control having a viewing screen. The method includes the following: (1) displaying a boundary-identifier, on the viewing screen that is substantially transparent, to specify the boundary of an effective input-area; (2) detecting one or more positions being touched on the viewing screen after the boundary-identifier is displayed on the viewing screen; and (3) determining at least one mapped position on the television screen, wherein the at least one mapped position is mapped from a position among the one or more touching positions on the viewing screen of the remote control under a mapping operative to map one of an irregular quadrilateral and a trapezoid to a rectangular. The method also includes determining the effective input-area, which includes analyzing the image of the television screen obtained with a camera on the remote control.

Abstract: A method of interacting with a television screen using a remote control having a viewing screen. The method includes the following: (1) displaying a boundary-identifier, on the viewing screen that is substantially transparent, to specify the boundary of an effective input-area; (2) detecting one or more positions being touched on the viewing screen after the boundary-identifier is displayed on the viewing screen; and (3) determining at least one mapped position on the television screen, wherein the at least one mapped position is mapped from a position among the one or more touching positions on the viewing screen of the remote control under a mapping operative to map one of an irregular quadrilateral and a trapezoid to a rectangular. The method also includes determining the effective input-area, which includes analyzing the image of the television screen obtained with a camera on the remote control.

Abstract: The active matrix display includes a matrix of pixel elements wherein a pixel element includes at least one nonlinear element. The nonlinear element in the pixel element comprises a supplementary resistor serially connected to one of a PN diode and a PIN diode. The method of driving a pixel element comprises charging the capacitive element in the pixel element through the semiconductor channel of the switching transistor in the pixel element and through the at least one nonlinear element while the semiconductor channel of the switching transistor maintains at the conducting state and the at least one nonlinear element maintains at the conducting state.

Abstract: A display device includes a matrix of pixel elements and a matrix of photo-detecting elements. The display device also includes an interface port accessible from the outside of the display device and configured to output a representation of a position of an invisible light spot on the display screen generated from an invisible light beam projected thereon with a spreading angle less than 20 degrees. The position of the invisible light spot is determined based on measurement from the photodetectors in the matrix of photo-detecting elements.

Abstract: A method of interacting with a television screen using a remote control having a viewing screen. The method includes the following: (1) displaying a boundary-identifier, on the viewing screen that is substantially transparent, to specify the boundary of a quadrilateral having a shape thereof dynamically depending upon at least one of the location of the viewing screen and the surface orientation of the viewing screen, wherein the surface orientation of the viewing screen is the orientation of the normal vector perpendicular to the viewing screen; and (2) detecting one or more positions being touched on the viewing screen after the boundary-identifier is displayed on the viewing screen.

Abstract: A display device includes a display cover screen, a two-dimensional matrix of photo-detecting elements constructed on a first substrate that is visually transparent, and a matrix of pixel elements constructed on a second substrate. The first substrate is sandwiched between the display cover screen and the second substrate.

Abstract: A method of interacting with a television screen using a remote control having a viewing screen. The method includes the following: (1) displaying a boundary-identifier, on the viewing screen that is substantially transparent, to specify the boundary of an effective input-area; (2) detecting one or more positions being touched on the viewing screen after the boundary-identifier is displayed on the viewing screen; and (3) determining at least one mapped position on the television screen, wherein the at least one mapped position is mapped from a position among the one or more touching positions on the viewing screen of the remote control under a mapping operative to map one of an irregular quadrilateral and a trapezoid to a rectangular.

Abstract: A method of driving a pixel element an active matrix display. The method inducing a change of the bias voltage of the first transistor towards the threshold voltage thereof with a current passing through a resistive element in the pixel element to cause the bias voltage of the first transistor at time t linearly depend upon an exponential decaying function exp(?t/?) with a predetermined time constant ?. The method also includes terminating light emitted from the light-emitting element after the bias voltage of the first transistor becomes substantially close to the threshold voltage of the first transistor.

Abstract: Method of driving a pixel element having a first capacitive element, a first transistor, and a compound-switch that includes at least one switching transistor and at least one secondary switching element. The method includes (1) setting the bias voltage of the first transistor to a value that is substantially close to a threshold voltage of the first transistor at the end of a first time period after starting changing a voltage across the first capacitive element at the beginning of the first time period, and (2) writing a pixel data into the pixel element to change the bias voltage of the first transistor to a target value that is different from the threshold voltage of the first transistor during a second time period while keeping the compound-switch at conducting state. The first time period is at least three times as long as the second time period.

Abstract: A method of driving a pixel element in an active matrix display. The method comprises: (1) driving the semiconductor channel of the at least one switching transistor into a conducting state from a non-conducting state, and maintaining the semiconductor channel of the at least one switching transistor at the conducting state for a first time duration; (2) driving the at least one nonlinear element into a conducting state from a non-conducting state, and maintaining the at least one nonlinear element at the conducting state for a second time duration that is within the first time duration; (3) changing a voltage across the at least one capacitive element while the semiconductor channel of the at least one switching transistor maintains at the conducting state and the at least one nonlinear element maintains at the conducting state.

Abstract: The method includes (1) measuring with a matrix of photo-detecting elements on the television screen a position of an invisible laser spot on a television screen projected thereon from an invisible laser beam generated by a laser device on a television remote control; and (2) transmitting from the television to a computer a representation of the position of the invisible laser spot on the television screen.