The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2021
Filed:
Mar. 20, 2020
Arm Limited, Cambridge, GB;
Ivan Michael Lowe, Cedar Park, TX (US);
Mikael Yves Marie Rien, Bernin, FR;
Arm Limited, Cambridge, GB;
Abstract
An apparatus has an input interface for receiving an input clock signal, and a plurality N of clock divider circuits, each clock divider circuit generating a corresponding monitored clock signal by dividing the input clock signal by N. Each clock divider circuit is arranged, when generating a leading edge of each clock cycle of its corresponding monitored clock signal, to use a leading edge of a different clock cycle of the input clock signal to the clock cycle of the input clock signal used by any other of the clock divider circuits. Analysis circuitry provided in association with each clock divider circuit produces a width indication for each clock cycle of the corresponding monitored clock signal. Alarm generation circuitry then triggers an alarm signal when, for any of the monitored clock signals, a variation in the width indication is detected over multiple clock cycles of that monitored clock signal.