University of Manitoba

Other

Robert Donald McLeod

Werner Pries

Howard Card

Peter Hortensius

Bradley Dale Brown

Douglas John Thomson

Craig Griffin

A ground anchor with a floating stabilizer consists of an elongate shaft, a screw flight coupled to the shaft at the lower end and an extension point mounted to the shaft at its lowermost point. A drive handle is provided for rotating the shaft about the axis and threading the flight into the ground. A winged stabilizer member fits over the shaft such that it floats freely of the shaft after installation to accommodate ground heave. An L-shaped mounting member is carried on a threaded rod screwed into a female thread at the top of the shaft for engaging a structure and supporting the structure relative to the ground.

Ground anchor with floating stabilizer

Built-in current mode quiescent current monitoring circuitry is provided for measuring a circuit's or a subcircuit's quiescent current. Anomalously high quiescent current (Iddq) generally results as a consequence of a manufacturing defect. These defects include those not detected by tests generated using traditional fault models. The technique provided here is based upon generating a proportionally matched current to the circuit under test current by a control loop. The proportionally matched current is then sent to a comparator where it is compared to a reference current, the reference current representing an acceptable quiescent current level. The output of the comparator then indicates whether the quiescent current is above or below the reference current.

Built-in fault testing of integrated circuits

A cellular automaton which generates pseudorandom data comprises a series of cells arranged such that each cell receives signals from electrically adjacent first and second cells. Each cell comprises a D-type flip-flop for storing a data bit, and logic circuitry which couples the flip-flop of the cell to those of associated first and second adjacent cells. The logic circuitry responds to the current state of the data bits stored by a particular cell and its associated first and second electrically adjacent cells by changing the value of the data bit stored by the particular cell according to a predetermined one of the following relationships:

Cellular automaton for generating random data

A cellular automaton which generates pseudorandom data comprises a series of cells arranged such that each cell receives signals from electrically adjacent first and second cells. Each cell comprises a D-type flip-flop for storing a data bit, and logic circuitry which couples the flip-flop of the cell to those of associated first and second adjacent cells. The logic circuitry responds to the current state of the data bits stored by a particular cell and its associated first and second electrically adjacent cells by changing the value of the data bit stored by the particular cell according to the following relationship:

Growing community of inventors

Winnipeg, Canada

Robert Donald McLeod