Abstract: A junction box 2 is formed at a mounting portion of a meter unit 3 disposed at a central portion of a rear handlebar cover 1 in a motorcycle, and wire harnesses 12 and 14 connected to a vehicle body and a front handlebar cover are connected to the junction box 2. Bus bars 31 and 33 made of a metal plate or bar are integrally embedded within the rear handlebar cover made of a synthetic resin in order to electrically connect electric parts such as switches Ss, Sd, Sw, Sh and the like supported on left and right portions of the rear handlebar cover 1 and the junction box 2 to each other. Thus, it is possible to easily and reliably perform the wiring to the electric parts supported on the handlebar cover 1 in the motorcycle.

Abstract: Seat sensor switches connected to the drivers seat and passenger's seat of a motor vehicle generate signals indicating when the seats are occupied. The passenger sensor switch generates an adult present signal, a child or small adult signal, or an infant/small child present signal depending on the size of the occupant. In response to a signal indicating that all the seats are unoccupied, the parking brake is set, a windshield curtain and a side window sunshade panel are deployed, and the headlamps and ceiling light are deactivated. In response to an adult present signal from the passenger sensor switch, a first quantity of air bag propellant is electrified, the air bag is aimed at an upper location, and the shoulder belt anchor is moved to an upper position. In response to a child or small adult present signal from the passenger sensor switch, a second, smaller quantity of air bag propellant is electrified, the air bag is aimed at a lower location, and the shoulder belt anchor is moved to a lower position.

Abstract: A work vehicle having an improved transmission control circuit, that is responsive to a shuttle shift lever and associated switch that generates a forward signal, a reverse signal and a neutral signal, whereby the transmission control circuit engages the transmission in a forward gear ratio on receipt of the forward signal, a reverse gear ratio on receipt of the reverse signal and places the transmission in neutral on receipt of the neutral signal, and further wherein the transmission control circuit further places the transmission in neutral whenever it receives both a forward and neutral signal, or both a reverse and neutral signal.

Abstract: A method and apparatus for permitting use of an ABS electrical power circuit associated with a tractor-trailer vehicle to provide auxiliary power whenever the trailer is parked and which provides for full power to an ABS brake control circuit through the ABS electrical power circuit in response to air pressure in the emergency brake supply line of the tractor-trailer vehicle being above a predetermined minimum which is sufficient to release the trailer's emergency brake and permit movement of the trailer.

Abstract: An electromechanical control unit for adjustment devices in motor vehicles which can be used with particular advantage in connection with a window lift drive in a vehicle door. The electromechanical drive, the electronics system and the switch of the electromechanical control unit form one pre-testable modular unit. Preferably each switch is in keyed engagement with a cover and is elastically mounted relative to the electronics system, for example through a flexible flat band cable connection.

Abstract: A communication link between a tractor and trailer is established utilizing existing by dormant tractor and trailer circuitry. In one embodiment of the invention, a tractor communications device has a communications port connected to a turn signal circuit and a trailer communications device has a communications port connected to the same turn signal circuit. The two communications devices permit communications therebetween over the turn signal circuit as long as the turn signal circuit is inactive, and otherwise inhibits such communications. In another embodiment of the invention, such a communications link is used to transmit a fault signal, relating to an abnormally operating trailer anti-lock brake system (ABS), to the tractor for activation of an in-cab ABS warning device.

Abstract: An overhead line for electrical energy transmission, includes three phase conductors of a three-phase system. The three phase conductors are disposed vertically one above the other and define an upper phase conductor and a lower phase conductor. At least one additional compensation loop having a first conductor, a second conductor, and vertical connecting conductors surround the three phase conductors. The first conductor of the at least one additional compensation loop is disposed parallel to and above the upper phase conductor. The second conductor of the at least one additional compensation loop is disposed parallel to and below the lower phase conductor. The first and the second phase conductors are connected to one another via vertical connecting conductors. A compensation current is fed into the at least one compensation loop.

Abstract: A method of powering a train powerline with a second source including using a local power controller in the trainline to determine the polarity of the power lines which run through the trainline. The local power controller then connects the second power source to the power lines with the determined polarity. Finally, the local power controller powers the power lines with a second power source once the connection of the appropriate polarity has been made.

Abstract: In a keyless entry control apparatus having a fault diagnosis unit provided separately from a car and a keyless entry C/U, the fault diagnosis unit transmits a signal to each control unit connected to a communication line, and when receiving a communication enabling signal transmitted from the keyless entry C/U, the fault diagnosis unit can communicate with the keyless entry C/U. In the case where ID codes are entered in the keyless entry C/U, a signal for setting the keyless entry C/U to ID entry mode is transmitted from the fault diagnosis unit to the keyless entry C/U. The keyless entry C/U which received the signal is set to ID entry mode, and transmits entry information of the ID codes entered in an EEPROM to the fault diagnosis unit immediately. The entry information is displayed on a display device of the fault diagnosis unit.

Abstract: A trailer communications system (36) is provided. The system (36) includes a trailer transducer unit (22) for location on a trailer (12). A vehicle transducer unit (24) can be located on a vehicle (26, 28, 30) or a stationary object (32). The trailer transducer unit (22) and the vehicle transducer unit (24) may communicate information in the form of acoustic signals broadcast at an ultrasonic frequency in response to a predetermined event.

Abstract: The present invention relates to a distribution network comprising electric wires (5) for distribution of electric current, a plurality of tap-off facilities (6) with at least one socket (9) for tapping off electric current to optional power-consuming units (1), and a central computer unit (10) communicating with the individual tap-off facilities. At least some tap-off facilities (6) in the network comprise a switch (13) and a regulating device (11) with a microprocessor (21), a user connecting a power-consuming unit (1) to one of said tap-off facilities being identifiable to the central computer unit (10) or to the regulating device (11) via a microprocessor in the power-consuming unit, and the regulating device, in case of accepted identification, keeping the switch (13) closed and permitting tap-off of electric current from the socket (9), whereas, in case of non-accepted identification, the regulating device keeps the switch open and prevents tap-off of electric current form the socket (9).

Abstract: A system and method for controlling adaptive vehicle occupant restraint devices use a processor for receiving input signals from a plurality of sensors, for generating control parameters using a predetermined program, and for generating control signals from the control parameters to adaptively control the restraint devices during an accident.

Abstract: A keyless entry system for use with a mobile transmitter for transmitting an ID code specified therefor along with a command for vehicle door lock/unlock remote control to a control unit. The control unit is operable in an ID code registration mode for registering an ID code transmitted from the mobile transmitter. The transmitted ID code is compared with the registered ID code to permit the remote control specified by the transmitted command when the transmitted ID code is identical with the registered ID code. Upon completion of a first predetermined procedure including a plurality of sequential events of at least one first movable vehicle member provided on the vehicle, a second movable vehicle member is changed from a first position to a second position.

Abstract: A marine power device capable of preventing a failure in actuation of constantly-driven loads required to be constantly actuated for continuing operation of an internal combustion engine, when various loads are actuated using both a magneto driven by the engine and a battery driven by the magneto as a power supply in a ship in which an outboard motor is used as a propelling equipment. The device includes a switch which functions to separate occasionally-driven loads increased in power consumption and the battery from the magneto when the battery is reduced in output voltage thereof to a level of failing to actuate the constantly-driven loads due to connection of the occasionally-driven loads to the battery or overdischarge of the battery. The switch is arranged at a position which does not affect flowing of a drive current fed from the magneto to the constantly-driven loads.

Abstract: There is provided a power system for a spacecraft that includes a plurality of electrical loads. The power system comprises N segmented solar array panels. Each of the N segmented solar array panels comprises Y solar array segments. The power system also comprises a plurality of power source blocks, each of which includes a respective one of the Y solar array segments of a respective one of the N segmented solar array panels. The Y solar array segments receive solar energy and provide electrical energy as outputs of respective ones of the power source blocks. The power system further comprises at least one switch which is controllable for coupling electrical energy output by individual ones of the power source blocks to selected individual ones of the electrical loads.

Abstract: A modular wiring harness is provided for a vehicle including a frame and an electrical system with electrical source devices, operating devices and switching. The wiring harness includes a wiring network connected to the electrical system devices and switching and to system and power module thereof. The system module connects electrical control components at a compact, direct-connection circuit board within the enclosure. The power relay also includes electrical control components, including a circuit breaker and a starter relay, which are connected to the wiring network. A mounting system is provided for mounting the wiring harness on various types of vehicles, including different models of motorcycles.

Abstract: A vehicle alarm comprises of a control unit (2) coupled to a message center (22) and an ultrasonic movement sensor (20). The ultrasonic movement sensor (20) is automatically activated when the vehicle ignition is switched off. If movement is not detected in the time period between switching the ignition off and the driver's door being closed, then the ultrasonic movement sensor (20) is deemed to have failed. A count of such failures is kept and when a predetermined number of such failures has occurred, a warning message is displayed on the message center (22). If movement is detected in the time period, the count is reset to zero. In this way, the alarm can automatically determine whether or not the ultrasonic movement sensor (20) is functioning correctly.

Abstract: A key cylinder, upon receiving a valid key, inserted through the key cylinder, is disengaged from a cylinder lock enabling the key and the key cylinder to be rotated between two positions. During rotation, an arm on the key cylinder engages a contact carrier to switch a contactor mounted on the carrier between two positions breaking one contact and subsequently making another contact. The contacts provide output signals to a vehicle passenger restraint apparatus to selectively alternatively place the passenger restraint apparatus in an "on" or "off" state.

Abstract: An electronic coupling control system for a vehicle trailer hitch assembly having a hitch plate in which a throat is defined for receiving a trailer kingpin and having a locking mechanism for locking the kingpin in the hitch throat. The electronic coupling control system includes a trailer proximity sensor for sensing when a trailer is in proximity to the hitch assembly, a kingpin sensor for sensing the presence of the kingpin in the hitch throat, a lock sensor for sensing when said locking mechanism is in a locked and secured position, and indicator means located in the vehicle for providing hitch coupling status information to an operator of the vehicle. The indicator means is coupled to the trailer proximity, kingpin, and lock sensors for informing the operator when a trailer is in proximity to the hitch assembly, when the kingpin is positioned in the hitch throat, and when the locking mechanism is in a locked position. The indicator means may include an indicator light and control circuit.

Abstract: An apparatus for transferring power and communication data across an annular gap comprises an inductively-coupled primary coil winding and secondary coil winding rotatable therein. Two signal oscillators are electrically coupled to a transistor for controlling current flow through the primary coil winding, thereby inducing a signal with a respective frequency in the secondary coil winding. An electronic switch operates so as to apply one of the two signals to the transistor for charging a capacitor coupled to the secondary coil winding, and operates so as to apply the other of the two signals to the transistor for discharging the capacitor. Actuation of control devices operate so as to modulate the impedance of the secondary coil winding. The inductive coupling of the two coil windings results in this modulation being mirrored by a modulation of the voltage developed across the primary coil winding.

Abstract: For use in a split-boost converter having a DC input, first and second outputs, a power train interposed between the DC input and the first and second outputs, a damped electromagnetic interference (EMI) filter circuit and method of reducing the EMI. In one embodiment, the EMI filter circuit includes (1) an EMI filter interposed between the power train and the second output, the EMI filter subject to oscillation from line disturbances arriving at the DC input and (2) a conductive path, coupling a rail of the second output to the DC input, that routes at least a portion of the line disturbances from the DC input directly to the second output to damp the oscillation of the EMI filter.

Abstract: An EMI prevention circuit has a first ground pattern grounded to a car body and a second ground pattern connected to the first ground patter by way of an EMI condenser. A large-current ground line through which a large current flows is connected to the first ground pattern by way of an EMI condenser. A small-current ground line in which a small current flows is directly connected to the second ground pattern without using any EMI condenser in between. Because of this, even when a ground potential of the first ground pattern fluctuates by a noise due to driving a large-current load, since the second ground pattern is directly connected to a ground side of a car battery, the second ground pattern is maintained at a ground potential of the car battery and does not fluctuate.

Abstract: In accordance with an output signal from a weight sensor mounted on a vehicle, a display control section causes a display unit to display weight calculated at predetermined intervals by a weight calculating section. The display control section adds, to the weight which is being displayed, the difference in the weights sequentially calculated by the weight calculating section from detection of start of a loading/unloading operation performed by a detection section to start of running of the vehicle and causes the display unit to display the obtained weight. A power supply control section for controlling a power supply circuit for supplying operating electric power for the sensor, the display unit, the display control section and the detection section controls to interrupt supply of operating electric power from the power supply circuit when an ignition switch is switched off.

Abstract: A hybrid vehicle includes a power unit communicating power between a turbine alternator, flywheel and traction motor. The power unit stores DC power in capacitors and places the power on a DC bus for use in driving the induction machines. A housing includes at least one wall forming an enclosed perimeter, the wall including a plurality of fastener members extending therethrough. The power unit comprising a DC storage unit and DC bus and power switches connected with a heat exchanger provide signals to an AC bus wherein each is connected to each other to form a structural unit. The fastener members are connected through the wall and to the power unit for installation as a single unit in a vehicle.

Abstract: An electrical line system has at least one magnetically compensated line system unit with at least two main conductors for transmitting electrical energy and further has at least one auxiliary conductor extending parallel to the at least two main conductors. The at least two main conductors and the at least one auxiliary conductor are phase-synchronized when the at least one auxiliary conductor carries current during operation of the electrical line system. The at least two main conductors and the at least one auxiliary conductor are arranged in a spatial arrangement relative to a first reference point in a first space extending parallel to the electrical line system, and the currents flowing in the at least two main conductors and the at least one auxiliary conductor are selected such that a vector sum of the magnetic field components emanating from the at least two main conductors and the at least one auxiliary conductor is substantially equal to zero at the first reference point.

Abstract: The object of the present invention is to provide a roof module on which various electric accessories and control circuits therefore are mounted at the front portion of the ceiling of a motor vehicle at the driver's seat side, so that the installation of functional electric accessories such as a sunroof and of the control circuits are greatly simplified. Inner equipments, electric accessories such as an antenna, control unit, and the like are assembled on an assemblage board formed into a shape which is suited to mount at the front portion of the ceiling of a motor vehicle at the driver's side, and that connectors for making a connection with an external electric circuit are provided thereon. A pair of connectors, which simultaneously act as a fixture and engage with each other are provided on the assemblage board of the roof module, thereby the coupling of the assemblage board with the overhead mount as well as the connection of the circuits are simultaneously performed.

Abstract: A communication apparatus is provided which permits system configuration to be freely changed even after electronic circuit boards are mounted to a shelf. The apparatus is a combination of an open rack and a shelf mounted on the rack, office cables for interconnecting external electronic devices are guided toward the rear of the apparatus and connected directly to external connectors of the electronic circuit boards, and a back wiring board is arranged on the rear surface of the shelf and has sheet connectors to which power supply connectors of the electronic circuit boards are connected.

Abstract: An electrical circuit for a vehicle comprises a first branch or sub-circuit and at least one second branch or sub-circuit. The first branch or sub-circuit includes the vehicle battery, an electrical generator to be driven by the vehicle's engine or transmission and for charging the battery, a starter motor to be driven by the battery for initiating engine operation, and a number of electrical components operable at voltages equal to or greater than the battery's nominal output voltage. At least one of the second branches or sub-circuits includes a number of other electrical components (e.g. lamps) that are susceptible to damage if the voltage supply thereto is too high, this second branch or sub-circuit being connected to the first branch or sub-circuit via an element, e.g. a diode, providing a substantially constant voltage drop.

Abstract: In an on-board wiring system for vehicles has a battery line for connecting a generator with an energy accumulator and a disconnection switch, actuated as a result of an accident, arranged therein. Additional consuming devices are connected to the energy accumulator by way of a consuming device line. The disconnection switch 2 is constructed such that, in addition to the battery line 3, it also interrupts the consuming device line 9 and in the process also disconnects it from the battery line 3.

Abstract: The invention concerns an improved system for windshield wipers in vehicles. An induction motor is used, in which speed is accurately controlled by controlling frequency of power supplied to the motor. The induction motor may be of the consequent-pole type, which ordinarily does not produce sufficient torque. Addition of (a) auxiliary tooth slotting and (b) skew has raised the torque produced to acceptable levels.The invention includes a control system, which senses excess load on the motor, which occurs as the windshield dries, and reduces motor speed, subject to a minimum, in response.

Abstract: An extra-low-voltage heating system that produces a reduced magnetic field and which uses three insulated copper wires, or equivalents, as heating elements. Its low operating temperature, robustness and safety enable the system to be installed, for example, in floors and walls for the general heating of buildings, and in outdoor pavements, for snow-melting purposes, etc. The single-phase feeder busbars are configured to reduce the magnetic field around the feeder. A monitoring network continually checks the integrity of the heating system.

Abstract: A heater includes a first heat-generating conductor, a second heat-generating conductor and a shield conductor. The first heat-generating conductor and the second heat-generating conductor are integrally covered with the shield conductor. One end of the first heat-generating conductor and one end of the second heat-generating conductor are electrically connected to each other. When a current is applied from the other end of the first heat-generating conductor, the current flows in the first heat-generating conductor and the second heat-generating conductor in opposite directions. A negative potential -Vn is applied to the shield conductor from a negative potential generating circuit. A positive potential terminal connecting circuit is composed of two diodes. One of the diodes has its anode connected to the positive potential terminal of the negative potential generating circuit and its cathode connected to a first line.

Abstract: A light-responsive vehicle control system is provided that is useful in the passenger compartment of a vehicle having a movable top, or cover, which may be opened to at least partially uncover the passenger compartment. The control system includes at least one control circuit which receives an input from the light sensor and produces an output to operate a device, such as an electro-optic mirror or the vehicle headlights, as a function of the light sensed by the light sensor and a sensitivity value. The control circuit is responsive to the position of the cover with respect to the passenger compartment to reduce the sensitivity level when the compartment is uncovered. The control circuit may filter a signal that is a function of light sensed by the light sensor according to a time-constant and be responsive to a reduction in the light level sensed by the light sensor to reduce the value of the time-constant.

Abstract: In order to make the commonly used approximation switch insensitive to intermittently occurring magnetic interference fields, such switch consisting of a magnetic field sensor (1) acting via an amplifier stage (2) on a switching stage (3), provision is made for a second sensor (4) reacting to such interference fields, said sensor, in its activated state, returning the given output signal of the switching stage (3) to the input of the amplifier stage (2) for maintaining the given lead signal of the sensor stage (magnetic field sensor 1), and thus preserving the functional state of the approximation switch present in the event of interference.

Abstract: A simplified dual connection system electrically interconnects the vehicles of a train. The train features a trainline to be formed through series interconnection of a wire on each vehicle. The simplified dual connection system includes a central computer, a connector control device on each vehicle and a pair of mateable connectors between each pair of vehicles of the train. Each pair of mateable connectors electrically interconnects the wires of each pair of adjacently disposed vehicles to form the trainline. When the mateable connectors are mated, a primary electrical path and a redundant electrical path are formed in that pair of connectors for the trainline. Each connector has a bidirectional circuit that interconnects a main node and a backup node for the wire on the vehicle.

Abstract: An improved driver interface system provides prompts to an operator to adjust several vehicle parameters. In this way, the operator is assured to adjust the necessary components upon start up of the vehicle. This is particularly important when the driver is unfamiliar with the car, as with a rental car. In one embodiment, the driver may be provided with a transmitter that stores desired settings for at least some parameters. The transmitter can then transmit the operator's desired parameters to a control, and the vehicle components can then begin to be moved to the desired positions as the operator approaches the vehicle. In other aspects of this invention, improved switches are disclosed. A rotary switch rotates on a steering wheel rim. This switch is easily accessible to an operator, and does not require the operator to divert attention from the road. A second type switch includes an element which is sensitive to touch by the operator.

Abstract: An apparatus for driving electrical loads provided at a vehicle by feeding power to the electrical loads, includes a power source for feeding power to a plurality of the electrical loads provided at a vehicle. The plurality of electrical loads are divided into more than one group. Each of the groups is driven by each of a plurality of load drive circuits by feeding power to each of the load drive circuits from the power source, provided at the vicinity of each of set places in the vehicle at which a group of the electrical loads are concentratedly arranged. A power line is connected to the battery, wherein each of the load drive circuits has a pair of power input terminals, and the power line connected to the battery is branched into two branch power wires. Each of the branch power wires is connected to a power input terminal of each of a first two load drive circuits of the load drive circuits.

Abstract: A spacecraft avionics module having a selected degree of electrical power independence from a core spacecraft structure to which the module is attached. The module of the invention includes at least a power regulator and converter function. Other embodiments of the invention also include an energy storage device and a power generator on the module itself, for complete decentralization of electrical power management for the spacecraft.

Abstract: A device for controlling a breaker in construction vehicles is disclosed. The device includes a control circuit provided with a power supply, a first solenoid valve used for controlling the breaker, and a second solenoid valve used for boosting the relief pressure of the circuit. The device also includes a control switch and a select switch. The control switch is installed in a control lever and is handled by an operator in order to selectively open or close the control circuit. Meanwhile, the select switch is connected between the control switch, power supply and first and second solenoid valves. The select switch selectively connects the power supply to the first or second solenoid valve in order to select either of the breaker and pressure boosting operations, which are commonly controlled by the control switch.

Abstract: A vehicle musical apparatus includes an electronic unit and speaker arranged to be mounted in the engine compartment of a vehicle. A remote control radio transmitter is provided for activating the musical apparatus, eliminating the need for installing wire connections between the passenger compartment and the engine compartment.

Abstract: A low resistance current interrupter for detecting the occurrence of an unsafe condition and terminating power to an electrical circuit. The current interrupter comprises two in-line connectors having a gap formed therebetween. An electrically conductive pin is disposed in the gap for movement between a first, extended position, wherein the pin bridges the gap to establish electrical contact between the connectors, to a second, retracted position wherein electrical contact is broken. The device further includes means for sensing the occurrence of an unsafe condition and generating a signal indicative thereof, and an electromechanical means such as a solenoid which, upon receiving said electrical signal, is activated and causes the pin to move to the second position.

Abstract: A system selectively completes a horn circuit through which electrical power is provided to a horn in an automobile. A relay is connected to a power supply and completes the horn circuit when a current signal passing through the relay has at least a threshold magnitude. A relay driver is selectively activated by processing circuitry. When it is activated, the relay driver is in a conductive state, and when it is not activated, the relay driver is in a high impendance state. When the relay driver is in the conductive state, it places the relay in series with a low potential conductor thereby establishing the current signal at at least the threshold magnitude. The processing circuitry is electrically connected to a manually actuated sensor, which may be a flexible potentiometer. The processing circuitry activates the relay driver when the manually actuated sensor is actuated.

Abstract: In a control circuit for a vehicle windshield wiper system, a relay energization retaining circuit forms a self-sustaining circuit jointly with a relay drive transistor for driving a wiper relay, and maintains supply of electric current to the wiper motor when the ON signal for the relay drive transistor is terminated as long as the auto stop switch is at the brake position until the auto stop switch subsequently moves on to the drive position.

Abstract: Apparatus for controlling the rotational movement of a ladder or the like of mobile equipment having stabilizing outriggers when the ladder is rotated manually to the side of the mobile equipment which does not have the outrigger fully deployed. A two-part switch, arranged for one part to rotate relative to the other, develops various combinations of signals dependent upon the relative positions of the parts of the switch. A control circuit is arranged to recognize the positions of the switch parts and supplies control signals which allow the ladder to rotate at a particular rate and to a particular point as the operator is steering the ladder to the side of the mobile equipment at which the outrigger is not fully deployed.

Abstract: A driver's seat sensor switch has contacts that are operable to generate a driver present signal in response to a driver's seat of a motor vehicle being occupied. A passenger's seat sensor switch has contacts that are operable to generate a passenger present signal in response to a passenger's seat of the vehicle being occupied. The driver present signal is applied to a driver seat belt switch that opens when the driver's seat belt is not properly fastened. When the driver's seat belt is not properly fastened, the driver present signal is applied through the seat belt switch to a light, whereby the driver present signal conditions illumination of the light as an indication that the driver's seat belt is not properly fastened. In a similar manner, an indication is provided when the passenger's seat belt is not properly fastened. The passenger present signal additionally conditions a passenger air bag for deployment in response to the vehicle being in an accident.

Abstract: A circuitry (1) for reducing the magnetic field from multi-phase power lines for high voltage alternating current is disclosed. One phase (R) is split into two branches (R1, R2) forming a closed loop along a line portion (L). The self-reactance of the loop is adjusted for minimal magnetic field generation in the vicinity of the power line by a coupling to a compensation device, in the form of a capacitor (12), in a separate circuit (11), via a transformer (2).

Abstract: A secure computer network switch, wherein a network switch is enclosed in a material which not only reflects electromagnetic waves but also absorbs them. This arrangement keeps all network signals confined to the switch enclosure and prevents electromagnetic radiation from the network cable connections. This allows a single computer to have access to multiple networks without vulnerability to theft or unauthorized disclosure of data between the networks.

Abstract: In a remote control system, each time a transmission code is transmitted, a rolling code having a prescribed bit configuration is cumulatively varied. An operation process is performed between each bit data item of the rolling code and each corresponding bit data item of the ID code, whereby each bit data item of the ID code is varied in correspondence with the rolling code, thus setting a variable ID code. Since the ID code itself which is contained in the signal is also varied in correspondence with the variable code, the fixed portion contained in the signal is decreased with the result that the ID code is almost infinitely widely varied. Accordingly, it becomes almost impossible to decode the ID code even if it is intercepted.

Abstract: A power management system for providing power to a main system, such as a telecommunications device, includes a number of modules that are joined by module-to-module interfaces that achieve a common EMC containment barrier. In one embodiment, a battery module defines a first EMC compartment that houses one or more backup batteries, a battery management module defines a second EMC compartment that includes circuitry such as recharging circuitry, and a power entry module includes a third EMC compartment. The power entry module has an input/output connection to the battery management module and has an AC input. An output cable extends from the power entry module to the main system. Compliant metallic module-to-module gaskets preserve EMC integrity at cable pass-throughs from the battery management module to the battery and power entry modules. The modules are mounted to a system housing in a manner that secures the modules in a desired relationship.

Abstract: An electrical arrangement is disclosed for use in supplying electrical power to the units in a motor vehicle. The arrangement comprises a battery, and an inverter to receive power from the battery and to generate a high frequency signal at an intermediate voltage higher than the voltage of the battery. There is a distribution network to distribute the high frequency signal to the units in the vehicle. At least some of the units supplied with electrical power are provided with step-up transformers to step-up the intermediate voltage to a higher voltage, that higher voltage being used by the units.