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US 7,479,808 B2Granted
Threshold circuit arrangement
AssigneeInfineon Technologies AG
InventorStefan Hermann Groiss
Life of this patent
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Abstract
A method for operating a threshold circuit arrangement and a threshold circuit arrangement is disclosed. In one embodiment, the invention provides a threshold circuit arrangement, wherein a comparator circuit is configured to compare an input signal is compared with a predetermined threshold, and wherein, depending on the result of the comparison, an output signal is adapted to change its state. A circuit is provided for preventing the change of state of the output signal in the case of predetermined forms of the input signal.
Claims16
A threshold circuit arrangement comprising:
- a comparator circuit configured to compare an input signal with a predetermined threshold and, depending on the result of the comparison, adapting an output signal to change its state;
- and
- a threshold circuit configured to prevent the change of state of the output signal in the case of predetermined forms of the input signal, the circuit comprising:
- a flip flop providing a disable signal at an output, wherein the change of state of the output signal is prevented as a function of state of the disable signal;
- a first comparator having an output coupled to a first input of the flip flop;
- a second comparator having an output coupled to a second input of the flip flop;
- the input signal coupled to an input of the second comparator, to an input of a third comparator, and to an input of a fourth comparator;
- a signal representing the predetermined threshold coupled to an input of the third comparator;
- and
- an integrator having an input coupled between outputs of the third and fourth comparators via an addition element and an output coupled to an input of the first comparator.
7 more elements
Dependencies are inferred from the claim text.