Abstract: A system for remotely controlling a television receiver has a position-dependant transmitter and an electrooptical arrangement which controls the motion of a cursor on a television screen. The electrooptical arrangement also generates menu entries to facilitate the selection of functions for tuning and operating the television receiver. The menu entries are selected by means of the cursor. The electrooptical arrangement includes adaptive filters which stabilize the position of the cursor on the screen and thereby allow for an increased number of control functions to be implemented.

Abstract: An architecture for generating a hardware cursor in the context of a bit mapped video display system operable from a frame buffer with non-displayed but addressable memory space. A segment of the non-displayed memory is loaded with cursor information controlling the generation of its outline and its color pattern. When accessed, this cursor control data is accessed from the non-displayed segment of the memory during each horizontal blank time preceding the raster scan of the video pattern data subject to cursor overlay. Location of the cursor within the video display is determined by a group of position registers which are loaded by the CPU with cursor position data during the vertical blank time. The position registers in conjunction with a group of counters coordinate the insertion of the cursor data into a byte stream of display data as it makes its way to the CRT screen. This display data is stored in the frame buffer and is transferred to the pixel output buffer.

Abstract: In a pixel based color display system, aliasing is minimized by controlling the colors in pixels, bridging boundaries of objects of the image to be blends of the colors on each side of the boundary. Blends are controlled in accordance with pixel words containing mix values. Provision is made for drawing lines one pixel line with aliasing minimized in the boundaries of the lines wherein the same mix value controls the blend in adjacent pixels bridging the leading and trailing edge of a diagonal line.

Abstract: A technique for interaction with a projected video image with a light pen and/or target marks on the projection screen in which light reflected from the projected image is compared with the video image to detect the position of a spot positioned on the projected image by the light pen and/or the reflection of the target marks. The computer used to generate the video image is then caused to position a cursor in the video image in response to the spot position and/or otherwise modify the generated and/or projected video image.

Abstract: Status and control panel for a remotely located printer. The panel includes input keys and a display device which can display various text strings, icons, screens, and multiple screen sequences. Each display format is prestored in volatile memory in the panel and addressed by display instructions from the associated device over a serial communications line. The display formats are pre-loaded in the memory at the time the device is first powered-up. Some of the input keys on the control panel are defined by the display on the LCD. Icon description language is used to store data about standard icon images, and an interpreter on the panel is used to convert these descriptions into dot-matrix format for use by the LCD.

Abstract: The present invention relates to a method and a device for displaying letters, images, etc. as well as a displaying medium used therefor, by which a display medium obtained by superposing a photoconductive layer, in which microcapsules are dispersed on a substrate. The microcapsules enclose a liquid crystal material which transitions between a transparent state and an opaque state by the application of an electric field. The substrate has a conductive surface so that charging of the surface causes the microcapsules to become transparent. An electrostatic latent image is formed on the surface of the displaying medium by irradiating selectively the surface with light. An AC electric field is applied to the displaying medium in order to make the microcapsules opaque at the position corresponding to the place, where the electric field is made disappear thereby making the latent image visible.

Abstract: A select line scanner circuit for a display device has a plurality of register stages. The register stages each include first and second register segments and first and second latch circuit means which receive select signals and apply oppositely poled logic signals to the output nodes of the register stages. Voltage boosting means are associated with at lest one of the register stages to assure that the logic signals are applied at the proper levels.

Abstract: In an active matrix addressed electro-optical, e.g. LC, display device of the kind comprising a row and column array of picture elements (12) each associated with a switching transistor (11) to which switching and data signals are supplied via switching and data signal conductors (14, 15) the transistors associated with alternate rows of picture elements are of opposite conductivity type (n,p) and the transistors of separate adjacent pairs of rows share a common switching signal conductor (14) to which switching signals for both conductivity types of transistors are applied, thereby reducing the number of such conductors. The transistors can be polysilicon or a-Si TFTs, or MOSFETs. CMOS technology may be used to produce also an integrated driver circuit (20).

Abstract: The joystick can be mounted on a thin panel or a thick panel. The joystick comprises a frame and a shaft extending through the frame. The shaft has a large-diameter portion and a small-diameter portion. A handle is mounted on the free end of the large diameter portion and the smaller diameter portion is pivotally mounted to the frame. Actuating means on the smaller diameter portion selectively engages microswitches. A bushing is located on the free end of the small-diameter portion when the joystick is mounted on a thin panel and is mounted on the other end when the joystick is mounted on a thick panel.