Boots – shoes – and leggings
Patent
1993-09-22
1995-12-12
Geckil, Mehmet
Boots, shoes, and leggings
364DIG1, 364259, 3642563, 3642674, 395161, G06F 1546, G06F 1100
Patent
active
054758513
ABSTRACT:
Global and local variable implementations in a graphical data flow programming environment whereby the local and global variables correspond to a control on a panel. A global variable is created by placing a global variable icon in a block diagram and creating an associated control in a global variable panel. The user the defines the data type of the global variable and assigns a name to the global variable. Therefore, global variables have a greatly reduced storage and execution overhead as compared with prior designs. Since a global variable is associated with a control in a panel, the user can view the global variable updating on the panel during execution of a VI. This greatly facilitates debugging. A local variable capability is also provided which enables a user to more effectively create block diagram programs and model processes in a graphical programming environment. A local variable is associated with a control on the front panel of a VI. A local variable is peculiar to the panel corresponding to the VI where the local is created, whereas a global variable is global to all VIs. Further, a local variable is created in a functional VI, whereas a global variable is not created in a functional VI. The data storage of a local variable is one of the controls on a VI's front panel. Writing to a local variable has the same result as passing data to the control terminal, except that the user can write to it even though it is a control. Also, the user can have any number of local variable references to a given front panel control, with some in write mode, and others in read mode. A local variable reference thus allows the user to use a front panel control as both an input and an output. One benefit of this local variable capability is that a user is allowed to use local variables in respective subVIs, i.e. subroutines, which are not affected by other VIs or other block diagrams.
REFERENCES:
patent: 4849880 (1989-07-01), Bhaskar et al.
patent: 5168441 (1992-12-01), Onarheim et al.
Dan Strassberg, "Data-acquisition packages get applications running quickly," EDN, Jun. 10, 1993 V38, n12 p. 93(2).
Schildt, C: The Complete Reference McGraw Hill 1987 pp. 22-29.
Kodosky Jeffrey L.
Rogers Steven W.
Geckil Mehmet
Hood Jeffrey C.
National Instruments Corporation
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