Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2007-06-12
2007-06-12
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S117000
Reexamination Certificate
active
10952646
ABSTRACT:
Delta/sigma frequency discriminator (1) for converting a frequency (Fv) of an input signal into a digital output signal (C) comprising a frequency divider (8) which divides the input signal at a frequency dividing ratio which can be switched in dependence on the digital output signal (C), with at least one sampling register (12) which samples the divided input signal by means of a reference clock signal for generating the digital output signal (C), and with a dither circuit (15) which varies the clock period (T) of the reference clock signal so that interfering modulation tones in the signal spectrum of the digital output signal (C) are suppressed.
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Callahan Timothy P.
Cox Cassandra
Infineon - Technologies AG
Jenkins Wilson Taylor & Hunt, P.A.
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