Boots – shoes – and leggings
Patent
1986-06-24
1989-05-16
Shaw, Gareth D.
Boots, shoes, and leggings
364900, 364947, 3649338, 364488, G06F 1560
Patent
active
048315249
ABSTRACT:
The present invention is an interactive method of creating and executing a logic diagram. The designer can pick and connect logic elements using a menu. The diagram can be edited and tested using a generic logic element. As the diagram is being created, an equations list is produced. The equations list is converted into an executable format by producing a compressed version of the equations list which is loaded into an execution table one record at a time. Each record can cause plural equations to be loaded and the equations are linked via token pointers. The unrelated equations are linked through input and output pointers. Each intermediate file record can cause record locations for associated input and output tokens to be preassigned. When executing, an input is percolated through the equations until an impasse is encountered. If a branch shape is encountered, a token pointer for a different branch is pushed onto a stack. When an impasse is encountered, the token pointer on the stack is used to continue percolation. Whenever no token pointers remain on the stack and an impasse occurs, another input is brought into the execution table and percolated. When all return stack pointers and inputs have been executed, the system checks for incomplete logic states, assumes a value and continues percolation. When all incomplete states have been resolved, the system stops and the outputs can be used for actual control.
REFERENCES:
patent: 4315315 (1982-02-01), Kossiakoff
patent: 4455619 (1984-06-01), Masui et al.
patent: 4527249 (1985-07-01), Van Brunt
patent: 4546435 (1985-10-01), Herbert et al.
patent: 4555772 (1985-11-01), Stephens
patent: 4656603 (1987-04-01), Dunn
Kriess Kevin A.
Shaw Gareth D.
Westinghouse Electric Corp.
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