Digital FSK demodulator
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United States of America Patent
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Oct 13, 1992
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N/A
app pub date -
Nov 14, 1991
filing date -
Nov 14, 1991
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Abstract
Digital FSK demodulators to be used in the telephone environment are disclosed. The demodulator according to one embodiment uses the sequential processing of a digital signal encoded in the fractional two's complement numeric representation. The use of multipliers is largely eliminated, thus enabling extensive use of simple shift registers and adders. Consequently the hardware complexity requirement is greatly reduced, thus resulting in very low cost products.
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