Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Patent
1995-09-12
1997-04-15
Nelms, David C.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
327176, 327 91, G11C 2702, H03K 908
Patent
active
056213433
ABSTRACT:
A demodulator circuit which demodulates pulse-width modulated signals used for data transfer within a semiconductor integrated circuit, including a sampling signal generator that generates a plurality of sampling signals after respective different predetermined times have elapsed since receipt of a leading edge of a pulse signal, and a plurality of sampling circuits provided in corresponding relation to the plurality of sampling signals which receive the pulse signal and the sampling signals associated therewith. The plurality of sampling circuits are rendered operable after receipt of the leading edge of the pulse signal and output a detection signal indicating whether or not a trailing edge of the pulse signal is received prior to receipt of the sampling signals. An encoder then generates data depending on which sampling circuit judges that the trailing edge of the pulse signal is received prior to receipt of the sample signals.
REFERENCES:
patent: 4037049 (1977-07-01), Lyon
Mitsubishi Denki & Kabushiki Kaisha
Nelms David C.
Phan Trong Quang
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