Abstract: An array of light control units has an area large enough to present images for direct viewing. The array also has light control units sufficiently dense that ordinary acuity artifacts are not noticeable in presented images when the array is directly viewed at usual viewing distances by a human with normal vision. Signal circuitry can provide signals to the light control units. The array can present an image that includes M colors, where M is more than three, even though each light control unit can only cause presentation of one of a segment with one of a set of N colors, where N is less than M. Data defining an input image with M colors are used to obtain data defining an output image that is a version of the input image but includes, for each light control unit, a color data item indicating one of its set of N colors. The signal circuitry provides signals to the light control units so that each light control unit presents a segment with the color indicated by its color data item.

Abstract: Switched capacitor analog circuits (such as integrators, amplifiers and digital-to-analog converters) constructed from polysilicon thin film transistors and capacitors are disclosed. The circuits are commonly implemented using conventional single crystal CMOS technologies, but this is the first time they have been realized using polysilicon TFT CMOS. The performance of the circuits is inevitably worse than that of conventional single crystal CMOS devices, but is nevertheless adequate for many large area applications. The circuits can be fabricated on large area substrates and integrated with, for example, flat panel displays, pagewidth optical scan arrays, or pagewidth printheads, offering improvements in the functionality and performance of those devices.

Abstract: A thin-film structure on an insulating substrate includes an array of binary control units with an area of at least 90 cm.sup.2 and a density of at least 60 binary control units per cm. One implementation has an area of approximately 510 cm.sup.2, a diagonal of approximately 33 cm, and a total of approximately 6.3 million binary control units. Each binary control unit has a lead for receiving a unit drive signal, to which it responds by causing presentation of a segment of images presented by the array. Each binary control unit can present a segment with either a first color having a maximum intensity or a second color having a minimum intensity. Each binary control unit's unit drive signal causes the binary control unit to present its first and second colors. The substrate can be glass. Each binary control unit can include an amorphous silicon thin-film transistor (TFT) and a storage capacitor. Each binary control unit can be square.

Abstract: A light sensing and display driving apparatus is operable independent of polling cycle providing a more accurate sensing of the patterns of illumination incident on an array of such apparatus, with a minimum of required interconnections per pixel. Each address line may simultaneously initialize one row of apparatus while enabling the subsequent row of apparatus. The apparatus is also compatible with elements capable of providing gain in the sensing mode, given that the photosensitive element is separate from the path across which voltage or current is measured. The display driving portion is compatible with standard active-matrix LCDs. The apparatus allows a minimum physical isolation between the sensing and display portions while maintaining sufficient electrical isolation to prevent the deleterious effects resulting from application of a display driving potential to sensing circuitry, and allows employing a timing scheme for both sensing and display driving within a short time period.

Abstract: A light sensing apparatus adaptable for inclusion in an array of such apparatus is operable independent of polling cycle providing a more accurate sensing of the patterns of illumination incident on an array of such apparatus. The apparatus facilitates utlizing each address line to simultaneously initialize one row of apparatus while enabling the subsequent row of apparatus. The apparatus is also compatible with elements capable of providing gain, given that the photosensitive element is separate from the path across which voltage or current is measured. The apparatus may be fabricated of amorphous silicon. The light sensing cell includes an input terminal, an output terminal, a conductive element electrically interconnecting the input and output terminals, a multiple-state sensing device, means for establishing an initial state of the sensing device, means for changing the initial state of the sensing device in response to the incidence of electromagnetic or ionizing radiation (e.g.

Abstract: An improved MOS capacitor array formed on a semiconductor substrate comprises rectangular strips of an active region overlapped by rectangular strips of conductive material. The active region and conductive material are separated by an insulating layer. The strips form an array of capacitors which are more tightly packed than the prior art and which are less sensitive to alignment errors than the prior art.

Abstract: A multichannel ADC is fabricated on a single IC with each analog channel for concurrently processing input analogue signal in a pipelined manner and including a dual purpose intermediate amplifier for amplifying an input voltage to be converted and providing a reference voltage for use during conversion. A unique capacitor array reduces the area required to implement the convertors.

Abstract: A stereoscopic viewer comprises a housing having an advancing plate for supporting and advancing a disc-shaped carrying card for stereo images which are viewed through a pair of eyepieces in the housing. A trigger oscillates the plate to incrementally rotate the card and position sequential pairs of images in the viewing axis of the eyepieces. The trigger includes a depressible actuator vertically projecting through a top surface of the viewer, as it is held for viewing. The trigger comprises a cylindrical actuator portion projecting through the top surface of the housing, and a leg depending from the actuator portion which engages the advancing plate to oscillate it as the trigger is depressed. As the plate oscillates in a forward direction, a flat front face of a pawl on the plate engages a radial slot on the disc to rotate it. The pawl is slightly inclined in the direction of advance of the card to help hold the card flat against the plate during incremental advancement.

Abstract: A hand held motion picture viewer includes a housing having a recess formed in one end of the housing for carrying a film cartridge, and a viewing aperture in the opposite end of the housing through which the images on the film in the cartridge may be viewed. The housing carries a film driving mechanism for engaging and advancing the film within the cartridge past the viewing aperture. The film driving mechanism includes a battery operated motor, a claw journaled for rotation within the housing and positioned to engage sprocket holes in the film when the cartridge is carried within the recess of the viewer, and a gear transmission means connected between the motor and the claw for rotating the claw in discrete arcuate steps when the motor is energized to produce intermittent film advance. An actuating lever and movable contact means are provided for selective electrical connection of the motor with the battery for selective energization of the motor and film advance.