Boots – shoes – and leggings
Patent
1990-12-21
1993-11-23
Cosimano, Edward R.
Boots, shoes, and leggings
364578, 364DIG2, 3649163, 371 23, 395500, G06F 1520
Patent
active
052650286
ABSTRACT:
A modeling system 10 comprises a central processing unit 12 coupled to an arithmetic logic unit 16. A device testing system 18 is used to imperically analyze the operational characteristics of a transistor to be modeled by the system 10. A set of parameter values are stored in a memory circuit 14 coupled to central processing unit 12. An input and display system 20 is used to interact with the central processing unit 12. The central processing unit 12 uses the arithmetic logic unit 16 to calculate an objective function which comprises a sum of a plurality of two types of terms. The first term within the objective function utilizes relative weighting with respect to the values of the remaining terms while the second type of term utilizes absolute weighting with respect to the remaining terms. Both types of terms are normalized such that they are of substantially equal significance during the calculation of the objective function. Once a minimum value of the objective function has been found, a set of final modeling parameters is output to a circuit design system 21 which utilizes the final set of modeling parameters to design circuitry comprising a plurality of transistors substantially similar to the transistor modeled by the system 10.
REFERENCES:
patent: 4590581 (1986-05-01), Widdoes, Jr.
patent: 4635218 (1987-01-01), Widdoes, Jr.
patent: 4763288 (1988-08-01), Deering et al.
patent: 4961156 (1990-10-01), Takasaki
patent: 5051911 (1991-09-01), Kimura et al.
Cosimano Edward R.
Donaldson Richard L.
Kesterson James C.
Matsil Ira S.
Texas Instruments Incorporated
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