Abstract: A viewing device and method are provided for use with an image transparency having an associated tracking memory. The viewing device has a display adapted to present at least two illumination patterns, a reader device for obtaining data stored in a tracking memory of an image transparency positioned proximate to the display surface, and a control processing unit. The control processing unit is adapted to receive the obtained data and to generate more than one illumination pattern with a first of the illumination patterns formed for passing through the transparency and second of the illumination patterns formed for viewing on the display without passing through the transparency, wherein the appearance of at least one of the illumination patterns is determined based upon the data obtained from the tracking memory.

Abstract: A viewing device is provided for viewing at least one image transparency having an associated tracking memory. The viewing device comprises an illumination device having at least one viewing surface adapted to present at least one illumination pattern, at least one radio frequency read write device for obtaining electronic data stored in an associated tracking memory of an image transparency positioned proximate to the viewing surface and at least one display device for viewing at least one electronic image related to said at least one image transparency. A control processing unit is adapted to receive said obtained data from said associated tracking memory and to use the obtained data for forming the at least one electronic image.

Abstract: A holder for holding at least one image bearing medium, with each at least one image bearing medium having a radio frequency transponder associated therewith, the holder having a holding body to receive and hold at least one image bearing medium an antenna and a radio frequency communication circuit operable to sense a first electromagnetic signal transmitted by the remote reader, generate a second electromagnetic signal in the holding body with the second electromagnetic signal adapted to cause the radio frequency transponders associated with said at least one medium held by the holding body to respond with electromagnetic signals that can be used to identify the mediums within the holding body, wherein the radio frequency communication circuit further transmits electromagnetic signals that can be used to identify the mediums within the holding body to the remote reader.

Abstract: A method for operating a display is provided. In accordance with the method, content is obtained and a profile is determined for the content. Elements are detected in a presentation space in which content presented by the display can be discerned. A profile is determined for each of the detected elements in the presentation space. Content is selected for presentation based upon the profiles for the detected elements and the content profile.

Abstract: A process for exposing a silver halide-containing photothermographic element with radiation to produce a latent image comprising a) providing a source of radiation which emits a beam of radiation to produce a spot having at least one dimension of height or length of less than 600 micrometers at a target site, b) providing at said target site a photothermographic silver halide element sensitive to radiation emitted by said radiation source, c) emitting radiation a first time in an imagewise distribution from said radiation source so that said radiation strikes said element as spots having at least one dimension of length or width which is less than 250 micrometers, and d) then emitting radiation a second time in an imagewise distributed manner so that at least some spots from radiation emitted said second time overlap spots where said first emitted radiation struck said photothermographic element.

Abstract: A multi-branch digital optical switch having three branch waveguides through which light may exit. The multi-branch digital optical switch includes a main waveguide, two side branch waveguides, and one center branch waveguide. The two side branch waveguides diverge symmetrically from the center branch waveguide at angles which are sufficiently small to allow modal evolution through the switch to be substantially adiabatic. Electric fields are used to raise the index of refraction of one side branch waveguide above the index of the center branch waveguide and to lower the index of refraction of the other side branch below the index of the center branch waveguide. The switch has an extinction ratio of 700:1 (28 dB) between its two side branches.

Abstract: A method reading an optical disc such that a light beam is launched from a laser diode into an array of waveguides that are serially demultiplexed or addressed in parallel onto a multiplicity of data tracks, such that the number of data points read, simultaneously or sequentially across the width of the disc are limited by the rotational speed of the optical disc, and an optical head using an array of waveguides for the optical guidance of the light beam, such that the array of waveguides is disposed on a substrate and wherein the light beam can be switched by a switching means between separate channels in the array by means of an applied potential; an error tracking channel, such that when the error tracking channel detects the misalignment of the optical head, a signal generated from the error tracking channel causes the optical head to realign; and optionally, a dump channel, such that light directed into the dump channel is directly radiated into the substrate, or through the dump channel and then into th

Abstract: Solid state electrochromic devices are fabricated using, as the electrochromic material, ionic conductors such as heteropoly acids. The properties of the ionic conductors permit construction of a device having only two electrodes and the electrochromic material. In operation, low voltages impressed between the electrodes induce a color change. For example, when phosphotungstic acid is employed, the color change is from white to dark blue. Cycle times as low as 100 msec are achievable and the devices exhibit memory properties.