Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2011-05-31
2011-05-31
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S243000, C375S342000
Reexamination Certificate
active
07953185
ABSTRACT:
A vehicle communication system has a receiving unit on a vehicle side for inputting a demodulated analog signal to determination units based on a received radio signal from a key unit. Then, one of the two determination units outputs a high-check signal that takes a high value when the analog signal is greater than a high threshold and the other determination unit outputs a low-check signal that takes a low value when the analog signal is smaller than a low threshold. Then, a sync. signal generator successively defines a determination period based on the high and low check signals. Then, a binary level of the analog signal is determined by a level determination unit based on the check signals, along with an estimation and a correction of an indefinite signal when the signal level cannot be determined based on a coding rule and the determination by the determination units.
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Denso Corporation
Ghebretinsae Temesghen
Nixon & Vanderhye PC
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