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AssigneeSony Corporation
InventorsDaisuke Murakami, Kenji Kibayashi, Isao Matsumoto, Hideki Yoshida, Mitsuaki Nishie, Satoshi Takahashi, Katsumi Uesaka
Estimating the term…
A signal detecting apparatus is to obtain hysteresis characteristic at a constant ratio regardless of signal amplitude fluctuations by supplying the threshold level adjusting signal corresponding to the input signal amplitude to the comparison circuit. The threshold value setting signal and the hysteresis adjusting signal is supplied to a comparison circuit through an amplifier and a hysteresis adjusting means having the identical characteristic with the peak hold circuit to set a threshold value and a hysteresis range. Therefore even in the case where the operating characteristic of the amplifier and the peak hold circuit for detecting the peak level of signal amplitude fluctuate, the threshold value and the hysteresis range fluctuation corresponding to the fluctuation. As a result, there can not need the adjustment for resetting the operating characteristic, the threshold value and the hysteresis range in each circuit and thus the time and labor required for adjustment can be further saved.
A signal input judging apparatus for judging an input of input signal to a receiver by inputting a peak level of receiving signals sequentially detected via an amplifier and a peak hold circuit to a comparison means and by outputting a comparison result of said peak level and a threshold value as a signal input detection signal, comprising:
A signal input judging apparatus for judging an input of input signal to a receiver by inputting a peak level of receiving signals sequentially detected via an amplifier and a peak hold circuit to a comparison means and by outputting a comparison result of said peak level and a threshold value as a signal input detection signal, comprising:
A comparison apparatus, comprising:
Dependencies are inferred from the claim text.