Motorola Corporation

Ricardo UK Limited

Other

Peter John Miller

Michael John Lindsey

Andrew Charles Osborne Smith

Anthony J Truscott

Robert John Barnes

Robert David Norris

Graham Ludar-Smith

Peter Hartnett

Steven Andrew Amphlett

David John Allen

A method of creating a simplified computer implementable engine model includes obtaining a complete computer implementable engine model and selecting, from the complete engine model, elements defining the simplified engine model. The method further includes obtaining from a library of rules at least one computer implementable model creation rule corresponding to the selected elements and using that at least one rule to create the simplified computer implementable engine model.

Method of simulating engine operation

A non-transitory computer readable medium includes a computer program, which when executed by a processor performs a method, the method including processing a data message to extract segments of data and computing a checksum by applying gray code conversions to one or more of the data segments, wherein only one bit changes on each count when consecutive integers are represented as bits. The method further includes extracting remaining data segments and adding bitwise to the previously calculated gray code checksum to provide the next checksum, converting the next checksum to gray code, and adding a final gray code conversion to a final data message including all remaining data segments and transmitting the final data message.

Data processing

A method of identifying a valid version of a data value and voting on separate instances of the data value is described. A processor receives an instance of the data value generated by one processor and a transmitted version of that generated instance transmitted by another processor and compares the received values to validate them. The processor further determines an agreed version of the data value from a comparison of the validated instances. As a result a simple and robust voting system is provided.

Fault tolerant data processing

An electronic system comprising a system to be monitored () and a plurality of fault-monitoring systems () each of which is adapted to output a fault signal when an input indicates that the electronic system is in a fault condition associated with the fault-monitoring system. The fault-monitoring systems are arranged in a cascade fashion such that a fault signal output from one fault-monitoring system () is provided as an input to a subsequent fault-monitoring system () in the cascade of fault-monitoring systems to simulate a fault condition associated with the subsequent fault-monitoring system. The output of the final fault-monitoring system in the cascade gives an indication of whether there is a fault with any of the fault-monitoring systems.

Self-test system

A control system for a load (), the system comprising a first microprocessor () having an output to drive one side of a load (), a second microprocessor () having an output to drive the other side of the load (), the system being arranged so that when either microprocessor detects a fault in the control of the load () the load () is switched off.

Control system

A lighting system and method () is disclosed having a pulse-width modulation (PWM) lighting system and method for use in environments where the PWM ratio is variable, for example though not exclusively, in 42V and/or dual-voltage electrical systems in automotive applications.

Lighting system and method

An encoder () and method for encoding data comprising a pseudo random number generator () for generating an array of pseudo random numbers (), and calculating means () for calculating a checkword () using the array of pseudo random numbers generated and a data sequence provided by a data unit ().

Encoder and method for encoding data

An interface circuit () and method for interfacing received digital signals, relative to a first ground potential, for transmission on the bus, relative to a second ground potential. A transformer () passes edges of the received digital signals. A Schmitt trigger () reconstructs signals from the edges of signals passed by the transformer, so as to produce digital signals, for transmission on the bus, relative to the second ground potential. The Schmitt trigger bias points may be set by an oscillators incorporating another Schmitt triggers () located on the same semiconductor die to reduce temperature variability.

Interface circuit and method for digital signals

A synchronization arrangement for a distributed microcontroller network has a number of distributed microcontrollers each having an internal clock frequency. Each microcontroller transmits data signals via the network. A frequency correction arrangement of each microcontroller is arranged adjust the internal clock frequency, in dependence upon a phase difference between the internal clock frequency and the logic level transitions of the data signals received via the network, such that the clock frequencies of the microcontrollers become phase-synchronized over time.

Method and apparatus for phrase synchronizing a plurality of microcontrollers of a distributed microcontroller network in a brake-by-wire automobile braking system

An energy management system for a motor vehicle has a first voltage supply terminal having a first nominal voltage and a second voltage supply terminal having a second nominal voltage. At least one of the first and second voltage supply terminals has a battery. A universal bi-directional DC-DC converter is coupled to exchange energy between the first and second voltage supply terminals. A third voltage supply terminal is provided for exchanging energy between the DC-DC converter and an external vehicle electrical system or battery charger. The energy exchanged between the first or second voltage supply terminals and the third voltage supply terminal is independent of the voltage and polarity of the external vehicle electrical system or battery charger.

Bidirectional energy management system independent of voltage and polarity

In a circuit, switch (1) switches a current from a reference voltage terminal through an inductive element (3). The energy stored in the magnetic field associated with the inductive element when a current is flowing is transferred on interruption of the current either capacitively or inductively to an energy storage element (4). The stored energy is then returned to re-energize the inductive element (3) when the current flow is restored by the switch (1).

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Shefford, United Kingdom

Peter John Miller