Abstract: Antimicrobial protection may be provided to protective gloves by mixing an antimicrobial agent in a glove material plastisol so that the antimicrobial agent migrates to the exposed surfaces of the gloves when the agent on the glove surface has been depleted. Antimicrobial gloves suitable for use in the food industry may be manufactured using a cold dip process with a plastisol that includes the following weight percentages of (a) a polymer resin, such as polyvinyl chloride (PVC), polypropylene polyethylene (PE), or polyurethane, 43 to 53%, (b) a plasticizer, such as DINP, 43 to 53%, (c) a stabilizer, such as CaZn, 2.7 to 4.7%, and (d) triclosan (2,4,4'-trichloro-2'-hydroxydiphenyl ether), 0.3 to 1.0%.

Abstract: A method of enhancing a digital image that was transmitted with a reduced amount of digital data representing the digital image in which the differences between pixels in the digital image before compression are compared to corresponding pixels in a compressed version of the digital image and in which a statistical distribution of the differences is evaluated to determine which of the differences should be corrected. A receiver identifies portions of a received digital image that are to be enhanced, and a transmitter forms an error image for the identified portions. The amount of digital data in the error image may be reduced by selecting for transmission parts of the error image in which the amount of digital data that is needed to enhance the received digital image is less than a predetermined number of bits, the predetermined number of bits being selected from the distribution of the differences so as to enhance at least a predetermined percentage of the received digital image.

Abstract: Ballast circuitry for a metal halide lamp is disclosed enabling sustained operation with a typical 120 volt AC power source. A novel auxiliary circuit network is operatively associated with inductive type starting circuit means to provide lamp reignition when needed during each half-cycle of the AC power supply. The present auxiliary circuit network employs breakover switching means connected in series with capacitor storage means for further connection across the operating discharge lamp.

Abstract: A high frequency, current mode, single-ended-to-differential signal converter with low input impedance constant to very high frequencies and a balanced output signal even for large signals. A wide range of input voltages may be accommodated and a d.c. offset correction added. A circuit for achieving a precise fifty percent duty cycle digital signal is disclosed. A circuit for ensuring a 90.degree. phase differential between two signals needed for quadrature multiplication is disclosed. Unusual precision in phase control of the quadrature signals needed for modulation and demodulation of wireless signals is obtained by the use of feedback circuits in both the duty cycle generator and phase shifter.

Abstract: A multilayer microtip probe, and method of manufacture, having a microtip prepared for adhesion of a first overlayer for determining probe operating properties and a hardened protective overlayer for improving resistance to erosion and wear during probe use.

Abstract: A fabrication process for dielectrically isolated high frequency complementary analog bipolar and CMOS transistors. Polysilicon extrinsic bases, polysilicon emitters with sidewall spacers formed after intrinsic base formation provides high current gain, large emitter-to-base breakdown voltage, large Early voltage, and high cutoff frequency.

Abstract: The present invention proposes a water-proof deodorizing, bedsore-preventing sheet that can not only eliminate the bad smell from the wastes of bedridden sick persons but also prevent the bedsore or its worsening and a method for manufacturing the same. The present invention gives such a manufacturing method that the sheet-shaped deodorizing material D obtained by allowing a sheet-shaped member made of a cellulose-based substance to contain ferrous sulfate which is subsequently oxidized into basic ferric sulfate is coated with the permeable film 1, whose fringes are partially sealed subsequently.

Abstract: A device for teaching, language skills is disclosed. In the teaching device, a predetermined number of questions are displayed on a display. The predetermined number is determined dependent on a level of a learner. The learner inputs answers to the questions to be displayed on the display. The answers are discriminated to be correct or incorrect. The device teaches correct answers for the incorrect answers repeatedly.A question for a level of the learner which is higher than a predetermined level is removed from the predetermined number of questions.

Abstract: System and method for operating a wireless telephone system particularly a wireless Private Branch Exchange (PBX), as both a voice system and a pager system. The system includes a protocol for communicating both voice conversations and display data to a remote unit. Remote units, which may be pagers, personal communications units, mobile telephones, and the like, communicate with the wired portion of the system using the same protocols and signalling techniques.

Abstract: A digital data radio receiver and method evaluates a data signal preamble received on an antenna to determine whether the antenna should receive the data signal following the preamble. The receiver determines frequency offsets from a desired frequency for each symbol in a block of symbols in the preamble, determines the variance of the frequency offsets, determines the average magnitude of the symbols in the block of symbols, where the determination of average magnitude may be performed in parallel with the determination of variance of the frequency offsets, and evaluates the variance and the average magnitude for the block of symbols to determine whether the preamble is actually noise and to assess reception quality at the antenna. In a two antenna diversity receiver system, these steps may be performed first on a block of symbols received at one antenna and then performed on the next block of symbols received at another antenna.

Abstract: A fluorescent lamp containing zinc amalgam and a method of precisely controlling the amount of mercury introduced into a temperature controlled fluorescent lamp. Precise quantities of mercury may be introduced into a fluorescent lamp in the form of solid zinc amalgam pellets that are in a metastable, non-equilibrium state.

Abstract: A frequency dependent resistor in which the length of the current path across the resistor varies as a function of the frequency of the electrical signals being passed therethrough. The resistor uses the principal known as skin effect to direct relatively higher frequency signals through a longer path through the resistor than is experienced by signals having a relatively low frequency.

Abstract: A device and method for controlling HF single side band radio squelch operation in which a serial tone burst indicates the start and end of a transmission and identifies an on-going transmission. Additionally, receivers in a power saving sleep mode can be activated by receipt of a set of serial tone bursts that have been transmitted with sufficient duration for the receiver to be assured the opportunity to detect them. During the subsequent transmission of information, single "keep-alive" serial tone bursts are transmitted at random time intervals. The end of a transmission is signalled by another set of serial tone bursts. The bursts are provided with the transmitted signal on its frequency and preserve signal bandwidth.

Abstract: A seal for movable structural components, such as piston rods or shafts, includes a carrier body made of plastics and a sealing member made of polytetrafluoroethylene (PTFE) material and bonded to the carrier body. A plastic material may be mixed with the PTFE and fused to the plastic carrier body during injection molding.

Abstract: A portable electronic device for orientation and communication comprises a casing (2) which includes a portable computer (8) with an integrated operating surface (10), communication means comprising electronic assemblies for wireless communication with identical or similar devices, and a docking station (6) for electrically connecting the computer to the communication means and the electronic assemblies and for mechanical retention. The computer (8) and the electronic assemblies are housed in the casing to be protected against outside influences and the computer is designed to be removable from the casing for operation independently of the device.

Abstract: A method of manufacturing a semiconductor device and device in which a sacrificial N shelf layer is grown on a P+ semiconductor substrate to contain the out-diffusion of dopant from the substrate. An N+ buffer layer is grown on the N shelf layer and an N- epitaxial layer is grown on the N+ buffer layer. The presence of the N shelf layer, which is consumed by the substrate dopant during further device fabrication, allows the integrated dopant level of the N+ buffer layer to be accurately controlled in the finished device.

Abstract: A method and control circuit for an electronic switch, and more particularly the high side switch in a bridge circuit. Control is established by continuous and/or the combination of continuous and pulsed signals. Fail safe undervoltage protection is provided for the high side switch based on the adequacy of both high side and low side control voltages.

Abstract: A method and apparatus for reducing power consumed by mobile wireless units, such as personal communications systems or wireless PBX telephones, by reducing the frequency with which various circuits within the units are fully energized. During on-going voice communications between a base station and a wireless unit, the wireless unit reduces the frequency of its references to a control channel and may eliminate such references altogether. In addition, while idle, the wireless units may not attempt to reference the control channel during all occurrences of the control channel, reducing both power consumption and the possibility of collisions with other wireless units in attempting to access the control channel.

Abstract: A wand for withdrawing fluid from a bag-in-a-box container and for rinsing the bag. A method of withdrawing fluid from a bag-in-a-box container and thereafter rinsing the bag is also disclosed, as is several practical examples of use of the method.

Abstract: A method for determining the location of a vehicle whose movement is constrained to a route whose location is fixed and known, such as a train. An initial estimate of location is made based upon information contained in a route database based on distance traveled from a reset point. The accuracy of the estimated vehicle location is improved through use of just two global positioning satellites.