Communications: electrical – Continuously variable indicating – Using a particular modulation
Patent
1987-10-13
1991-05-14
Lall, Parshotam S.
Communications: electrical
Continuously variable indicating
Using a particular modulation
340858, 340861, 34087001, G08C 1900
Patent
active
050160052
ABSTRACT:
The disclosure relates to a microprocessor based telemetry apparatus and method utilizing a commercially available IBM PC-AT or compatible CPU. Three hardware cards fit in existing slots within the computer chassis. Software is provided to accomplish, in combination with the cards, what has essentially required a main frame computer heretofore. The microcomputer is equipped with novel hardware and software to provide PCM bit synchronizer/decoder, decommutator, time code reader and digital-to-analog converter functions. Data is stored in real time using interleaved buffers, novel software and a hard disk. Data can be archived on digital tape. Data logging can be carried out at sustained rates approaching 2 million bits per second, up to six times faster than with MS-DOS yet files are accessible with MS-DOS. Real-time data scaling and display of up to 128 separate parameters are accomplished.
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Cunningham Larry E.
Gioannini John P.
Harkey Warren B.
Rishel Barry E.
Shaw Harold L.
Duggan Donovan F.
Lall Parshotam S.
Peacock Deborah A.
Queen Tyrone
Terametrix Systems International, Inc.
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