Apparatus including safety logic
AssigneeSamsung Electronics Co., Ltd.
InventorDONG-SIK CHO
Life of this patent
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Abstract
An apparatus includes a first function module providing a master signal, a second function module providing a comparison signal, and safety logic. The safety logic includes a toggle signal generator having a comparator providing a comparison result in response to the master signal and the comparison signal, a feedback path generating a first toggle signal in response to the comparison result and providing a feedback signal to the comparator, and a first multiple input gate generating a second toggle signal in response to the comparison result. The safety logic also includes a toggle signal monitor providing a final fault search signal in response to the first toggle signal and the second toggle signal.
Claims21
An apparatus comprising:
- a first function module configured to provide a master signal;
- a second function module configured to provide a comparison signal;
- and
- safety logic comprising:
- a toggle signal generator including at least one comparator configured to provide a comparison result in response to the master signal and the comparison signal, a feedback path configured to generate a first toggle signal in response to the comparison result and provide a feedback signal to the at least one comparator, and a first multiple input gate configured to generate a second toggle signal in response to the comparison result;
- and
- a toggle signal monitor configured to provide a final fault search signal in response to the first toggle signal and the second toggle signal.
An apparatus including safety logic, the safety logic comprising:
- a toggle signal generator configured to provide a first toggle signal and a second toggle signal in response to a master signal and a comparison signal, wherein each of the master signal and comparison signal includes a plurality of bits;
- and
- a toggle signal monitor configured to provide a final fault search signal in response to monitoring of the first toggle signal and the second toggle signals,
- wherein the toggle signal generator comprises:
- a plurality of comparators configured to bit-for-bit compare the master signal with the comparison signal and generate a comparison result;
- a feedback path configured to perform a first gate operation in response to the comparison result, generate the first toggle signal, and provide a feedback signal to each of the plurality of comparators in response to the first toggle signal;
- and
- a first multiple input gate configured to perform a second gate operation in response to the comparison result and generate the second toggle signal.
An apparatus including safety logic, the safety logic comprising:
- a plurality of comparators respectively receiving at least one bit of a master signal and at least one bit of a comparison signal, and configured to compare the master signal with the comparison signal on a bit-for bit basis to generate a comparison result;
- a feedback path configured to generate a first toggle signal in response to the comparison result and further configured to generate a feedback signal in response to a clock signal and the first toggle signal, wherein the feedback signal is provided to each one of the plurality of comparators;
- a first multiple input gate configured to perform a first gate operation on the comparison result to generate a second toggle signal;
- a toggle signal monitor configured to monitor the first toggle signal and the second toggle signal in response to the clock signal and provide a final fault search signal providing information indicating whether or not the master signal correctly correlates with the comparison signal;
- and
- an error injector configured to generate an error signal in response to the clock signal, wherein the toggle signal monitor monitors the first toggle signal and the second toggle signal further in response to the error signal and provides the final fault search signal further providing information indicating whether or not at least one of the plurality of comparators, the feedback path, the first multiple input gate, and the toggle signal monitor is faulty.
21-29. (canceled)
Dependencies are inferred from the claim text.