Abstract: The present invention provides an RF transmitter network for cellular telephone systems. The network includes power amplifier circuitry which coupled to a closed loop control system to provide a controllable RF amplitude envelope for the output power of the amplifier circuitry over a dynamic range of between about 5 milliwatts and about 3200 milliwatts.

Abstract: The invention is a modular cross-connect system which has a connector block having an array of connector jacks therein and which is mountable on a panel. The block has pivot pins for pivotally mounting it in an aperture in the panel, and the rear of the block has connectors thereon for connecting wires or other signal carriers to the connector jacks. The block can be pivoted to give access to the connectors from in front of the panel so that connections can be made, after which the block can be pivoted back to its operative position and latched in place. In a second embodiment of the invention, the block is supported by retaining clips extending from the front of the panel so that it can be supported in front of the panel during wiring after which it is inserted into an aperture in the panel and pivotally supported therein, with means on the block for latching it in place.

Abstract: A set of features, such as a pattern of V-grooves (20--20), can be precisely etched in a wafer (18) by patterning the V-grooves so that their axis of symmetry has a prescribed relationship with the axis of tilt (27) of the wafer surface (22).

Abstract: An apparatus minimizes the spherical aberration of a light beam emitted into an optical fiber from a light source such as a laser beam. The laser emits a light beam along a path of travel to an optical fiber used in a telecommunication system. A ball lens is positioned within the light beam path of travel, and has a front focal point. The laser is positioned in front of the front focal point such that the light beam emitted by the laser forms an intermediate paraxial focus point. A corrective lens is positioned adjacent the paraxial focus point so that the laser beam is introduced into an optical fiber with minimal spherical aberration and increased coupling efficiency.

Abstract: Automatic expansion of a hierarchical repertory that is maintained by a touch screen based product to accommodate a user request to add an entry to a touch screen display page that has reached its capacity of entries is discussed. Such automatic expansion operates by selecting a button from the display page, wherein the selected button is linked to a first node of the repertory. A second node is added to the repertory, and the repertory is modified to establish the first node as a child node of the second node. Then, a new menu button is associated with the second node, and the selected button is deleted from the display page. The new menu button is positioned in the display page at the position previously occupied by the selected button.

Abstract: A connector (10) terminates an optical cable (30) and includes a cylindrical ferrule (140) installed in a plastic base member (150) to form a fiber-holding structure. This structure includes a small passageway along its central axis for holding an optical fiber, and is mounted within a housing (110) that includes a cable-entrance end for receiving the optical cable and a plug end for insertion into a jack receptacle (40). The housing includes a cantilever latch (120) that is mounted on a side surface of the housing and is used to secure the connector to the receptacle. The fixed end (125) of the cantilever latch is positioned toward the plug end of the connector, and the free end (124) of the cantilever latch extends toward the cable-entrance end of the connector. The housing further includes a cantilever trigger (130) which slidably engages the latch to move it downward and thereby release the connector from the receptacle.

Abstract: Applicants have discovered methods for making, treating and using diamonds which substantially enhance their capability for low voltage emission. Specifically, applicants have discovered that defect-rich diamonds--diamonds grown or treated to increase the concentration of defects--have enhanced properties of low voltage emission. Defect-rich diamonds are characterized in Raman spectroscopy by a diamond peak at 1332 cm.sup.-1 broadened by a full width at half maximum .DELTA.K in the range 5-15 cm.sup.-1 (and preferably 7-11 cm.sup.-1). Such defect-rich diamonds can emit electron current densities of 0.1 mA/mm.sup.2 or more at a low applied field of 25 V/.mu.m or less. Particularly advantageous structures use such diamonds in an array of islands or particles each less than 10 .mu.m in diameter at fields of 15 V/.mu.m or less.

Abstract: A module for an equipment rack in a wireless communication system wherein the functions of power filtering, distribution, and limitation are integrated into a single module whose wiring is both simplified and standardized. The module comprises a filtering capacitor and several circuit breakers which are arranged in parallel with a busbar providing the filtered current. The tripping current of each circuit breaker is set to safely provide power to a branch circuit of the equipment rack which the module serves. A terminal in the rear of the module connects it to the rack as the module is inserted. The replacement module has the same quality control standard as the rest of the equipment and the down time of the wireless system network is reduced.

Abstract: An outlet assembly for use with optical fibers and, where called for, electrical cables has a hinged wall plate adapted to be mounted to an outlet box. The wall plate is adapted to receive couplers therein for receiving both optical fiber and electrical connectors. A storage spool is mountable to the rear of the wall plate for storing the required amounts of fiber slack and includes wall members and guide members for maintaining separation among at least some of the fibers. The wall plate has an upper portion which is pivotally connected to a lower portion and which can be swung away from the outlet box to provide access to the rear of the wall plate. A protective hood is movably mountable to the front of the wall plate to protect the various connections thereto.

Abstract: An overvoltage-tolerant self-biasing input/output buffer circuit having a p-channel field-effect transistor ("FET"), a first n-channel FET and a biasing circuit for biasing the body of the p-channel FET so as to prevent forward-biasing of the of the p-channel FET. The p-channel FET has a source connected to a first voltage, a gate connected to a first input, a drain connected to an output, and the body connected to a node. The first n-channel FET has a drain connected to the output, a gate connected to a second input, a body connected to a second voltage, and a source connected to the second voltage. The biasing circuit includes a second n-channel FET and a third n-channel FET. The second n-channel FET has a source and a gate connected to the first voltage, a drain connected to the node, and a body connected to the second voltage. The third n-channel FET has a drain connected to the node, a gate and a source connected to the output, and a body connected to the second voltage.

Abstract: Methods and apparatus are disclosed for using information about a calling party's identity or the importance of a call to control the call waiting signal played to a called party that is busy on another call. Upon determining that a called communication station is busy on another call, information about the identity of the calling party is obtained from the calling station. This information is processed to determine call routing treatment, and particularly to determine whether a call waiting signal is to be played for the call and, if so, what type of call waiting signaling is to be played. The called party can determine information about the identity of the calling party from the call waiting signaling, and thus determine whether to interrupt the call in progress to respond to the call waiting signal.

Abstract: The disclosed Mach-Zehnder (MZ)-type devices are planar waveguide devices, with interferometer arms of essentially equal length, with a maximum spacing between the arms (e.g., between the waveguide core centers) selected to make possible simultaneous exposure of both arms to refractive index-altering radiation. Exemplarily the maximum spacing is in the range 20-100 .mu.m. The simultaneous exposure of both waveguides makes it possible to form gratings of essential equal strength, such that typically no individual trimming is required. The resulting devices (typically add-drop filters) are substantially less sensitive to environmental changes (e.g., temperature gradients, mechanical vibrations) than prior art fiber-based devices, and are advantageously used in, for instance, WDM optical communication systems.

Abstract: A technique for finding values which satisfy a set of constraints. The technique is used with local search procedures for finding such values and overcomes the tendency of such local search procedures to "get stuck" at local minima. The technique dynamically adds weight to constraints in the set which are not satisfied by the current set of values and uses the weights of the constraints to determine the next set of values to be used in the local search. In the disclosed embodiment, the technique is used in the GSAT greedy local search procedure. Also disclosed is a system for controlling a robot arm which uses the technique.

Abstract: A zone analysis system and method (211) optimize speed and minimize adverse effects resulting from noise in an inspection system (90) for measuring disparity between two surfaces. In particular, the zone analysis system and method (211) can be implemented in an inspection system (90) for contactlessly measuring undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) controlled by a machine vision system (92) for determining the degree of disparity. The inspection system (90) measures an offset of an interferometric fringe (113') produced by the interferometer (98) over the target (82) in the image in order to determine the disparity. Further, the machine vision system (92) employs the zone analysis system and method (211) for optimizing the performance thereof.

Abstract: A class of silicon-containing materials display excellent sensitively in the ultraviolet and deep ultraviolet for the formation of patterns by radiation induced conversion into glassy compounds. Materials are depositable from the vapor phase and show excellent promise for use such as resists in the fabrication of electronic and optical devices.