Abstract: A punch and die device for working such as punching of a pipe material is disclosed, of which internal die means can easily be inserted into a pipe material even if an open end of the pipe material to be worked has burrs inward extending therefrom, and in which it is easily detected whether the internal die means is pushed toward a lateral side or lateral sides of the pipe material and thereby firmly held. The punch and die device for working a pipe material comprises: external punch means located outside a pipe material P, and internal die means K inserted in the pipe material for cooperation with a punch 30 of the external punch means to work the pipe material P; the internal die means K being divided into two parts in a direction orthogonal to that of reciprocating motion of the punch 30 of the external punch means, one 1 of the parts having working function and the other 2 having no working function, the non-working part 2 being forward and backward movable in the opening direction, i. e.

Abstract: An integrated circuit inverted thin film resistor structure and method of manufacture having interconnect defining resistor contacts and leads resident within and coplanar with a supporting layer, resistive material uniformly overlaying the supporting layer and contacts, the resistive material diffused into the resistor/interconnect contact region.

Abstract: A complementary multiplexer with low disabled output capacitance and method in which a plurality of switched buffers are packaged together to avoid the capacitance of a plurality of switched buffers applied to the printed-circuit board transmission lines.

Abstract: Use of ISA Adapter Card (ISAAC) to insure timing of application of power and logic to ISA, SCSA and MVIP Cards when those cards are plugged into standard ISA connectors of the ISAAC and the ISAAC is subsequently plugged into an active ISA, SCSA, and/or MVIP bus(es) such that any server connected to the back plane does not have to be shut down to protect ISA, SCSA and MVIP cards when inserted and removed from the back plane.

Abstract: A system for conveying a signal by optical fiber may include a converter for converting a radio frequency signal to an optical frequency signal, the converter having an interferometer modulator for providing a carrier suppressed optical frequency signal having a sideband modulated by the radio frequency signal, an optical amplifier for amplifying the modulated sideband before transmission on an optical fiber by an amount that is greater than or approximates the transmission loss in the system, a local oscillator, a coupler, and detector for converting (superheterodyning) the modulated sideband from the optical fiber to a predetermined intermediate radio frequency.

Abstract: A trench process for establishing a contact for a semiconductor device with trenches such as the trench and planar MOSFETs (UMOS), trench and planar IGBTs and trench MCTs which reduces the number of masks and eliminates the need for lateral diffusion into the trench channel region. Improved control of the parasitic transistor in the trench MOSFET is also achieved. The cell size/pitch is reduced relative to conventional processes which require source block and P+ masks.

Abstract: A method of fabricating a MOS controlled thyristor (MCT) semiconductor power device which reduces process time, reduces cell size, and increases the density of turn-off channels. The method uses a single, dopant-opaque mask to form MCT structure above the bottom N and P layers, including the upper portions of PNP and NPN transistors which form the MCT and On-FETs and Off-FETs which operate the MCT. The single mask may also be used to fabricate floating field rings for the device. The method may also be used on both sides of the device to provide a Fast Turn Off (FTO) device with both On- and Off-FETs on one side and at least an Off-FET on the other side.

Abstract: Upholstery for a seat, rest or couch. The upholstery includes internal channels through which draining air may flow. Valve means that open under load or compression control air flow through the channels. The flow of draining air is increased automatically or given a desired flow distribution by the surface area pressure controlled by a seated person. The cross sections of the valve means and the channels may be designed so that even a very small pressure difference and correspondingly little energy expenditure will provide a satisfactory air flow rate.

Abstract: A valve and and a valved trocar jacket tube by which there is no need of an adapter, types of a clamp or the like to be used are not limited, and leakage of an inert gas from an abdominal cavity can be prevented. In the valve and the valved trocar jacket tube, when a pair of rings are relatively rotated at a predetermined angle in the opposite directions, a cylindrical section in a rubber-like member is opened. In case of employing a clamp or the like, it is inserted into the abdominal cavity through the opened cylindrical section. Since the rubber-like member has elasticity, the cylindrical section is close together with the clamp or the like inserted.

Abstract: A circuit and method for synchronizing multiple transmitting devices in a multiplexed communication system in which transmitting nodes generate bit transitions on the multiplexed bus based on the time elapsed since the last received bit transition, and in which the synchronization is dependent only on the last received bit transition and on no other synchronization signal. The circuit and method may be used to prevent inadvertent bit transition transmission within a predetermined period of time of receipt of a bit transition.

Abstract: The power supply voltage is adaptively controlled to increase the efficiency and minimize multi-tone intermodulation distortion of a power amplifier either as a function of amplifier overdrive and/or as a function of the frequency of the input waveform. If the input signal is single-tone, the supply voltage is adaptively changed to increase the efficiency of the amplifier as a function of the amount of amplifier overdrive and/or the frequency of the input waveform. If the input signal is multi-tone, the supply voltage is increased to its maximum to minimize intermodulation distortion.

Abstract: A method and apparatus for use in encrypting and decrypting digital communications converting an initial block to final block based on freely selectable control information and secret key information. The apparatus or method having a plurality of units or steps operating on plain text or cipher text to provide a final block. The steps or methods including three modulo operations having unique modulus and meeting a specified constraint.

Abstract: This invention relates to a system and method of detecting a broken rail in a railway system. The track sensing circuitry of the present invention applies a voltage source at each end of a block of rails and senses the current flowing through the circuitry. The present invention will detect broken rails continuously in a block, even with a train present (except for a break directly beneath the train). Since the rail is continuously checked, the only restriction imposed on train spacing by this track circuit configuration is that only one train can be present in a block at a time.

Abstract: Transformers of electric voltage meters based on mechanical waves. The invention is based on the generation of elastic waves in transformers which are composed of a transmitter, a receiver, a dielectric body and a mechanical connection, whereby the transmitter converts the variations in tension in elastic waves, which propagate through the dielectric body to the receiver by means of a connection device, and the receiver converts the mechanical waves in electric signals which are then amplified by means of an electronic unit in order to generate elastic waves from the electric fields from which electric waves are produced; piezoelectric and electrostrictive materials are utilized to build four different types of transformers depending on the structure: monolithic (one-piece), self-connecting, directly-connecting and externally-connecting transformers.

Abstract: A safety insert for a horse rein which separates under a predetermined tension to open the rein and reduce the risk to the rider without damage to the rein.

Abstract: In a wireless communication system in which a base station communicates with plural mobile stations using frames of digital data, each frame having a control slot and plural voice (or data) slots, the present invention divides at least some of the slots into two portions and receives communications from one of the mobile stations during a first portion of a voice slot and communicates with the same mobile station during the second portion of the same slot.

Abstract: A system and method for providing a digital field configurable radio frequency communication system that can be configured into a transmitter, or a receiver, to function with a plurality of signaling schemes, such as, AM, AME, A3E, H3E, J3E, CW, SSB, M-PSK, QAM, ASK, angular modulation, including FM, PM, FSK, CMP, MSK, CPFSK etc. The system includes a non volatile memory that is adapted to receive and store instructions for configuring the system. A user selects the mode of operation and the signaling scheme, and instructions and software are downloaded from the memory into the system and configure the system as selected by the user.

Abstract: A method for controlling press working by means of working wheels is disclosed which is capable of solving problems in conventional punch press working by means of working wheels. The method comprises: in punch press working by means of working wheels, moving at least an upper working wheel relative to a work in Z axis direction in an arbitrarily set amount assigned to the movement at the beginning or end of the working along an intended working line.

Abstract: A fiber optic track lighting fixture and method with independent focusing and aiming of the individual light beams therefrom. The fixture comprises subassemblies easily assembled to form the fixture.