Boots – shoes – and leggings
Patent
1980-01-21
1982-03-23
Ruggiero, Joseph F.
Boots, shoes, and leggings
364602, 364825, 367 43, 367 65, G06C 748, G01V 100
Patent
active
043216757
ABSTRACT:
A geophysical data acquisition system is disclosed having a dynamic range larger than that achievable with typical existing systems. The range of input signals that can be accommodated by a system are limited on the lower end by the noise level of the system and at the upper end by saturation levels of the system. High amplitude input signals can be accommodated by the system if certain unneeded frequency components are filtered off at a sufficiently early point in the signal flow path. In the present invention this desirable filtering is accomplished while maintaining a high gain level in the signal flow path ahead of those components which introduce high noise levels. As a result, the system has an expanded dynamic range and the needed capability to faithfully acquire low amplitude signals.
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patent: 3525948 (1970-08-01), Sherer et al.
patent: 3699325 (1972-10-01), Montgomery, Jr. et al.
patent: 3819864 (1974-06-01), Carroll et al.
patent: 3919685 (1975-11-01), Haill
patent: 4086504 (1978-04-01), Ezell et al.
Carroll Paul E.
Harris Ralph A.
Devine Thomas G.
Merrett Rhys
Ruggiero Joseph F.
Sharp Melvin
Texas Instruments Incorporated
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