The smart Trick of Anti-Tamper Digital Clocks That Nobody is Discussing
The smart Trick of Anti-Tamper Digital Clocks That Nobody is Discussing
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thirty. An equipment for detecting voltage tampering, comprising: suggests for delivering a gradual-state monotone signal in the course of an Appraise time frame;
3. The strategy for detecting clock tampering as described in assert one, wherein utilizing the clock to trigger the Consider circuit comprises utilizing a clock edge at an conclude of your clock Examine period of time to set off the evaluate circuit.
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22. An apparatus for detecting clock tampering, comprising: a first circuit that gives a primary monotone sign through a first clock Appraise time frame associated with a clock;
What exactly is claimed is: 1. A way for detecting clock tampering, comprising: giving a plurality of resettable hold off line segments, wherein resettable delay line segments involving a resettable delay line segment affiliated with a bare minimum hold off time as well as a resettable delay line phase linked to a most hold off time are Every linked to discretely expanding delay occasions;
Resettable hold off line segments in between a resettable hold off line segment linked to a minimum amount hold off time plus a resettable hold off line section related to a utmost hold off time are Each and every connected to discretely increasing delay periods. An Consider circuit Anti-Tamper Digital Clocks is triggered by a clock and uses the plurality of delayed monotone alerts to detect a voltage fault.
In-body structure allows clock to frequently be accessed for adjustment or battery increase devoid of eradicating steel housing. Durable vandal resistant metallic housing, with removable encounter plate secured by anti-tamper screws. Clock confront is shielded by outcomes resistance panel.
In additional detailed elements of the invention, the method might additional consist of resetting the resettable delay line segments for the duration of a reset time period.
24. The strategy for detecting voltage tampering as outlined in declare 23, additional comprising: resetting the resettable hold off line segments for the duration of a reset period of time, wherein the reset time frame is ahead of the Assess period of time.
In more specific areas of the creation, the strategy might even further include things like resetting the resettable delay line segments for the duration of a reset time period.
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