Abstract: A computer-based virtual instrumentation system including a host computer and an embedded system or device, wherein graphical programs created using the computer system can be downloaded to the embedded system for execution in a real-time or more deterministic manner. The present invention thus provides a method for automatically generating an embedded application in response to a graphical program created by a user. This provides the user the ability to develop or define instrument functionality using graphical programming techniques, while enabling the resulting program to operate in an embedded real-time system. The invention includes a novel method for configuring the embedded system. During execution of a graphical program in the embedded system, the block diagram portion executes in the embedded system, and the host CPU executes front panel display code to display on the screen the graphical front panel of the graphical program.

Abstract: A scalable high-speed packet switching device includes a packet switch with ports, a crosspoint matrix, and a plurality of subswitches, one for each port of the packet switch. A processor in the packet switch detects a high level of traffic between two ports and causes the subswitches and crosspoint matrix to divert packets away from the packet switch and through a dedicated channel in the crosspoint matrix.

Abstract: A method and apparatus is provided for interfacing a plurality of ISDN lines from a telephone company central office to equipment which transmits video data, such as videoconferencing equipment. A single telephone wiring jack is directly coupled to two, three, or four ISDN lines without conversion to S/T channels. The single telephone wiring jack is coupled to an interfacing device which converts each ISDN line format into a format compatible with the videoconferencing equipment, such as the Multi-Vendor Interface Protocol format. Rather than using conventional wiring pin-outs for the single telephone wiring jack, all pins of the jack may be allocated to carrying ISDN data. The inventive method and apparatus avoids the expense of various conversion devices and wiring of separate telephone jacks, and permits as many ISDN lines to be allocated as are needed to support a desired bandwidth.

Abstract: A polycarbonate substrate coated with an acrylic coating containing at least one polybenzoylresorcinol, and optionally a silicone hardcoat on the acrylic coating, wherein said at least one polybenzoylresorcinol has the formula ##STR1## wherein each A is independently a substituted or unsubstituted monocyclic aromatic radical wherein any substituents are hydrogen, halogen, alkoxy, C.sub.1-8 alkyl, or hydroxy, and R is hydrogen or a linear or branched aliphatic radical having less that about 10 carbon atoms.

Abstract: An apparatus and method is provided for modulating and transmitting full-motion, television-quality color video signals along with digital data signals over a pair of ordinary unshielded twisted pair telephone wires without interfering with normal telephone data on the wires. A transmission method is disclosed involving frequency modulation of a baseband video signal and subsequent filtering to suppress an upper sideband corresponding to a color component of the original video signal. The filtered signal is received from the telephone wires at a difference location, filtered, demodulated and provided to a display device. Full-duplex operation over the same pair of wires is possible, such that two video signals may be simultaneously transmitted, each signal having an approximate bandwidth of 6 MHZ and shifted to a desirable noninterfering frequency location within the approximately 20 MHZ of usable bandwidth on the telephone wires.

Abstract: An apparatus and method is provided for modulating and transmitting full-motion, television-quality color video signals along with digital data signals over a pair of ordinary unshielded twisted pair telephone wires without interfering with normal telephone data on the wires. The invention is characterized by a transmission method involving frequency modulation of a baseband video signal and subsequent filtering to suppress an upper sideband corresponding to a color component of the original video signal. The filtered signal is received from the telephone wires at a different location, filtered, demodulated and provided to a display device. Full-duplex operation over the same pair of wires is possible, such that two video signals may be simultaneously transmitted, each signal having an approximate bandwidth of 6 MHz and shifted to a desirable non-interfering frequency location within the approximately 20 MHz of usable bandwidth on the telephone wires.

Abstract: An improved shielding assembly for a circuit board. This assembly is formed by providing a substantially flat piece of metal that will be used to form a shield assembly. A template is obtained indicating locations of folds and tabs. The folds are at locations that will enable the tabs to be located in the holes on the circuit board. The template is used to etch grooves and to etch tabs. This can be used to form a shielding assembly.

Abstract: An improved shielding assembly for a circuit board. The assembly includes a multi-layer circuit board, each layer of which has ground planes around the perimeter thereof. An edge plating on the circuit board connects the ground planes to one another. A number of tab holes are also in the board, and the shielding assembly is formed as a conductive box which is connected to the tab holes. A shielded area is formed within the shielding assembly. The shielding assembly is preferably formed by etching fold locations and folding, and by etching tabs to be formed.

Abstract: A method of controlling the movement of particles entrained in a liquid metal flowing along a confined flow path having a substantially horizontal base characterized by the steps of:(1) disposing a first planar device within the flow path to cause the shedding of vortices downstream of the device so that particles having a predetermined range of terminal velocities are trapped within the vortices and agglomerated into clusters of particles.(2) causing the agglomerated particles to be sedimented either upwardly or downwardly and(3) establishing a flow pattern downstream of the first device in which the local Reynolds number decays to a value sufficiently lower than 10.sup.3 to result in essentially laminar flow of the metal so as to minimize re-entrainment and subsequent break up of the agglomerated particles.

Abstract: A shielded print head assembly has a plurality of pieces that are self-aligned with one another. A base forms a ground plane, and includes a registry structure thereon which is preferably a pin extending above a top surface thereof. A circuit board is aligned by connecting inner surfaces of the circuit board around the pin to precisely locate a connector of the circuit board. A print head is located adjacent to the circuit board such that its connector is exactly adjacent to connector of the circuit board. An innerface connector is then used to connect between the circuit board connector and the print head connector, the interface connector being completely shielded by a cover. The interface connector is also held in self-alignment by the registry structure. The interface connector also has a top surface defining an insulation area, coupled against the cover which forms a ground plane. In this way, a shielded and self-aligned multi-piece print head is formed.

Abstract: A method of controlling the movement of particles entrained in a liquid metal flowing along a confined flow path having a substantially horizontal base characterized by the steps of:(1) disposing a first planar device within the flow path to cause the shedding of vortices downstream of the device so that particles having a predetermined range of terminal velocities are trapped within the vortices and agglomerated into clusters of particles.(2) causing the agglomerated particles to be sedimented either upwardly or downwardly and(3) establishing a flow pattern downstream of the first device in which the local Reynolds number decays to a value sufficiently lower than 10.sup.3 to result in essentially laminar flow of the metal so as to minimize re-entrainment and subsequent break up of the agglomerated particles.

Abstract: In a twin head dry shaver, the shaver heads are carried at the upper end of a four-bar mounting linkage comprising vertical side members 1A, 1B and bell crank links 2, 3 pivotally connected to the side members at points 7, 8 and 9, 11. The links are pivotally connected to the frame by pivot pins 4 and 6 set above and mid-way between the connections to the side members, thus rendering the heads highly sensitive to cut of balance forces acting on the heads so that they may move vertically, relative to each other to restore the balance.