G - Physics – 09 – G
Patent
G - Physics
09
G
73/164, 375/39,
G09G 3/18 (2006.01)
Patent
CA 1163386
Abstract of the Disclosure A display for a measuring instrument comprises an array of liquid crystal display segments forming a scale and a multi-digit numerical display in which each digit position comprises a multi-segment liquid crystal display. An input circuit comprises a transducer, which may be responsive to mechanical, electrical or any other form of signal, and an analog-to-digital converter to provide digitized input signals. Under the control of a signal processing circuit which may use a microprocessor, the digitized signals are applied to respective de- coder/drivers for the scale array and numerical display such that the scale is stepped by one segment for each unit change in the next to least significant digit of the numerical display. The least signifi- cant digit thereby provides an interpolation of the input value be- tween adjacent segments of the scale array which provides a stepped or quasi-analog display. The display may also provide limit annunci- ators driven by comparator means responsive to the current digital values.
370713
Federal Products Corporation
Fetherstonhaugh & Co.
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