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:
May. 31, 2022
Filed:
Jul. 08, 2021
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Win-San Khwa, Hsinchu, TW;
Jui-Jen Wu, Hsinchu, TW;
Jen-Chieh Liu, Hsinchu, TW;
Elia Ambrosi, Hsinchu, TW;
Xinyu Bao, Fremont, CA (US);
Meng-Fan Chang, Taichung, TW;
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Abstract
A random number generator that includes control circuit, an oscillation circuit, a dynamic header circuit, an oscillation detection circuit and a latch circuit is introduced. The control circuit sweeps a configuration of a bias control signal among a plurality of configurations. The dynamic header circuit generates a bias voltage based on the configuration of the bias control signal. The oscillation circuit generates an oscillation signal based on the bias voltage. The oscillation detection circuit detects an onset of the oscillation signal, and outputs a lock signal. The latch circuit latches the oscillation signal according to a trigger signal to output a random number, wherein the trigger signal is asserted after the lock signal is outputted, and the configuration of bias control signal is locked after the lock signal is outputted. A method for generating a random number and an operation method of a random number generator are also introduced.