Hysteresis detecting method, hysteresis detecting circuit...

Details Hysteresis detecting method, hysteresis detecting circuit... Hysteresis detecting method, hysteresis detecting circuit...

2006-09-05

2006-09-05

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S205000

Reexamination Certificate

active

07102396

ABSTRACT:
A hysteresis detection method has two reference voltages Vref1, Vref2relative to an input voltage Vin. It is determined whether the input voltage Vin becomes higher than or lower than the reference voltages Vref1, Vref2, and a judged result is outputted. In the initial stage in which the detection is started, regardless of the magnitude of the input voltage Vin, the reference voltage is fixed to any one of the reference voltages Vref1, Vref2. There are provided a hysteresis detecting method and a hysteresis detecting circuit in which, in the hysteresis detection having two reference voltages and which determines whether the input voltage is higher than or lower than the two reference voltages, one of the reference voltages can be judged and the judged result can be outputted regardless of the magnitude of the input voltage in the initial state in which the reference voltage is stabilized from the time in which the circuit is actuated. Also, there is provided a mobile device using this hysteresis detecting circuit.

REFERENCES:
patent: 6700424 (2004-03-01), Feng
patent: 2002-111864 (2002-04-01), None

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