Abstract: The present invention relates to transparent microspheres (i.e., beads) that impart yellow color to retroreflected light. The microsphere preferably comprise titania plus alumina, zirconia, and/or silica and iron oxide, manganese oxide, or mixtures thereof. More particularly, the present invention relates to fused microspheres that impart yellow color to retroreflected light having both transparency and mechanical properties suitable, for example, for lens elements in retroreflective articles.

Abstract: Transparent solid microspheres that contain titania plus alumina, zirconia, and/or silica in a total content of at least about 75% by weight, based on the total weight of the solid microspheres, wherein the total content of alumina, zirconia, and titania is greater than the content of silica.

Abstract: The present invention relates to transparent microspheres (i.e., beads) that impart yellow color to retroreflected light. The microsphere preferably comprise titania plus alumina, zirconia, and/or silica and iron oxide, manganese oxide, or mixtures thereof. More particularly, the present invention relates to fused microspheres that impart yellow color to retroreflected light having both transparency and mechanical properties suitable, for example, for lens elements in retroreflective articles.

Abstract: Transparent solid microspheres that contain titania plus alumina, zirconia, and/or silica in a total content of at least about 75% by weight, based on the total weight of the solid microspheres, wherein the total content of alumina, zirconia, and titania is greater than the content of silica.

Abstract: Transparent solid microspheres that contain titania plus alumina, zirconia, and/or silica in a total content of at least about 75% by weight, based on the total weight of the solid microspheres, wherein the total content of alumina, zirconia, and titania is greater than the content of silica.

Abstract: A low reflectivity, variable attenuation contrast enhancement filter having a total visible light reflectance of less than about 2.0% when measured with light incident to the first outer major surface. The contrast enhancement filter has a first layer(s) for providing antireflection, the first layer(s) defining the first outer major surface; a variable attenuation element interposed between the first major outer surface and the second major outer surface; element(s) for providing fixed attenuation interposed between the variable attenuation element and the first major outer surface; and at least one substrate.

Abstract: A method and system for prioritizing, securing, and reducing the amount of data transmitted and stored during the creation of a backup copy of file data. Sectors in which changes have been made are identified as are the actual changes made to the sectors. Only the actual changes within each changed sector, along with the HCS number and a byte offset identifying the location within the sector at which the changes occur, are transmitted to the backup site. Files that are to be transmitted to the backup site are prioritized according to ratings based on predetermined criteria. Higher rated files are transmitted to the backup site prior to lower rated files. The files that are to be transmitted to the backup site are encoded and double encrypted. All instances of predetermined client-specific data elements within each file are identified and replaced by a corresponding code prior to encryption.

Abstract: A two-dimensional visual display comprises one or more groups of one dimensional display components 12 (FIG. 2), each component being formed by spaced individually energizable display elements 11, conveniently l.e.d. groups, attached to a multiconductor cable 13. Each display component has serial input shift register means formed by separate m-stage shift registers 17 disposed along the cable each feeding display energizing signals from stage outputs to m adjacent display elements enabling the same m conductors of the cable to be isolated (at 17') and used to connect each shift register to its associated display elements irrespective of the number along the component.The, or each, group comprises 8 components and the shift registers of the group are addressed in parallel by single bits of a stream of words produced by an 8-bit microprocessor and representing the message to be displayed by the display elements.

Abstract: A two dimensional illuminated display for forming on an expansive surface such as an airship envelope comprises (FIG. 3) a set of one dimensional display components 18 each formed by a multiconductor (ribbon) cable 19 having attached thereto by insulation piercing connectors 41 a plurality of display elements 20 containing illumination elements 20.sub.R and 20.sub.G formed by arrays of red and green high intensity l.e.d.'s. The display component cables hang from an attachment point at one end of the cable (21, FIG. 2) and are retained in channels 15, formed on the surface by raised vertically-extending ribs 16, by retaining members 24 extending across the channels by way of through-apertures 25 in the ribs. The retaining members are prevented from withdrawal by similar joining members 26 extending along the ribs. Each illumination element is fed from the cable 19 and the emission axes of the diodes may be tilted relative to the local channel base e.g.