Abstract: There is provided a method for controlling a plurality of vehicles sharing a set of common resources Each vehicle's motion is controllable by a finite set of predefined commands. The method includes forming subsets of the common resources on the basis of predefined motion constraints of individual ones of the vehicles; partitioning the vehicles into disjoint clusters on the basis of the subsets; executing a tree-based planning algorithm. Each execution including an evaluation of sequences of the predefined commands to be fed to the vehicles in a single cluster and a selection of a preferred sequence of the commands; and feeding the preferred sequence of commands to the vehicles in each cluster.

Abstract: There is provided a method for controlling a plurality of vehicles sharing a set of common resources Each vehicle's motion is controllable by a finite set of predefined commands. The method includes forming subsets of the common resources on the basis of predefined motion constraints of individual ones of the vehicles; partitioning the vehicles into disjoint clusters on the basis of the subsets; executing a tree-based planning algorithm. Each execution including an evaluation of sequences of the predefined commands to be fed to the vehicles in a single cluster and a selection of a preferred sequence of the commands; and feeding the preferred sequence of commands to the vehicles in each cluster.

Abstract: The present invention provides an apparatus and method for implementing low-power linear feedback shift registers (LFSR) that efficiently produce single or multiple outputs. In one case of single output generation the gates are permanently connected to the respective flip-flops reducing the number of switches necessary. In the case of multiple outputs the outputs are generated several clock cycles at once, which enables the frequency of operation to be reduced by a factor equal to the number of outputs produced at a time. In either case grouping is utilized for reducing the number of gates necessary and the power dissipation. The invention is applicable to a wide range of applications, including but not limited to data compression, encryption, communication, error correction, built-in self-test, and so forth.

Abstract: A method for computing position error signal information of a transducer in a data storage system provides for different readback signals between adjacent tracks. The method involves a computation to obtain coarse position information from the servo bursts signals for track seeking and a computation to obtain a position indicator from the user data sector for more precise track following within the user data sector.