Abstract: It is provided a system for controlling operation of an internal combustion engine, connected to a fuel channel which provides pressurized fuel to fuel injectors. The system includes a fuel return line for providing excess fuel from the engine to a fuel tank, a two-way valve having ports connected respectively to the fuel channel and to the fuel return line, and a controller for activating the valve. The valve has a normally open state enabling free fuel passage between the two ports, and an active closed state blocking fuel passage thereof. In the normally open state, fuel passage through the two-way valve decreases fuel pressure in the fuel channel bellow a pressure level appropriate for engine operation by fuel injection. Once the controller activates the valve, the pressure level in the fuel channel enables engine operation by fuel injection. The two-way valve may be controlled wirelessly by an anti-theft lock of a motor vehicle. The first port may be connected to the fuel channel within the engine.

Abstract: A method and system for storing a plurality of filter rules in a computer system is disclosed. The plurality of filter rules uses at least one range of values in at least one dimension. The method and system include separating a portion of the plurality of filter rules into a plurality of pure subsets of filter rules. Each of the plurality of pure subsets of filter rules includes at least one of the plurality of filter rules. The method and system also include combining a portion of the plurality of pure subsets of filter rules to provide a combined subset and determining whether an efficiency of utilizing the plurality of filter rules is improved by combining the portion of the plurality of pure subsets of filter rules. The method and system further includes storing the plurality of filter rules including storing the portion of the plurality of subsets of filter rules as the combined subset if the efficiency of searching the plurality of filter rules is improved.

Abstract: A method and system for graphically representing relationships between a plurality of filter rules in a computer system is disclosed. The computer system includes a display. Each of the plurality of filter rules has a priority. The method and system include allowing entry of at least one filter rule of the plurality of filter rules and providing a graphical display of a first portion of the plurality of filter rules on the display. Each of the first portion of the plurality of filter rules is displayed hierarchically based on the priority of each of the first portion of the plurality of filter rules.

Abstract: A method and system for storing a plurality of filter rules in a computer system is disclosed. The plurality of filter rules uses at least one range of values in at least one dimension. The method and system include separating a portion of the plurality of filter rules into a plurality of pure subsets of filter rules. Each of the plurality of pure subsets of filter rules includes at least one of the plurality of filter rules. The method and system also include combining a portion of the plurality of pure subsets of filter rules to provide a combined subset and determining whether an efficiency of utilizing the plurality of filter rules is improved by combining the portion of the plurality of pure subsets of filter rules. The method and system further includes storing the plurality of filter rules including storing the portion of the plurality of subsets of filter rules as the combined subset if the efficiency of searching the plurality of filter rules is improved.

Abstract: The effectiveness of a Network Processor to process data at media speed is enhanced by partitioning a Rules Database, used to filter and/or forward frames, into at least one set of Almost-Exact Rules and Other Rules. The Almost-Exact Rules are processed by a Full Match (FM) Tree Search Algorithm and the Other Rules are processed by a Software Managed Tree (SMT) algorithm.