Boots – shoes – and leggings
Patent
1988-04-14
1991-07-02
Lee, Thomas C.
Boots, shoes, and leggings
36423222, 3642303, 3642546, 3642612, G06F 1582
Patent
active
050290800
ABSTRACT:
A method of composing a set of instructions for directly executing a data-flow type program by using a Petri net diagram direction to structured data of at least one of, or a combination of, Cartesian product, direct union and sequence, and a structured data driven type processor system for executing a program containing such instructions. In composing a set of instructions, desired data paths, i.e., links, are provided in accordance with the Petri net diagram, and the links are defined by a data type which defines the data to be processed. A work node connected to the link at the input side of the work node is defined which work node takes data from the link at the input side of the work node, performs a desired calculation to take the calculation result out to the link at the output side of the work node. A data type defining data on the link at the output side is restricted by a calculation function of the work node. Instructions associated with data structure include a decomposition instruction for decomposing structured data into constituent elements and a composition instruction for composing data of Cartesian product, direct union or sequence from constituents elements. The decomposition and composition instructions are added to instruction languages of the structured data driven type system.
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Hitachi , Ltd.
Lee Thomas C.
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