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:
Nov. 21, 2023
Filed:
Sep. 26, 2022
Nuvoton Technology Corporation, Hsinchu, TW;
Po-Hsuan Huang, Hsinchu, TW;
Chung Ming Hsieh, Hsinchu, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu, TW;
Abstract
A power supply device for providing a driving voltage of an encryption/decryption device. When the encryption/decryption device is in operation and its driving voltage falls within the voltage range formed by an upper limit voltage and a lower limit voltage, only a supply voltage provided by a secure power supply device is used as the driving voltage for the encryption/decryption device. When the encryption and decryption device is in operation and its driving voltage falls outside the voltage range formed by the upper limit voltage and the lower limit voltage, the supply voltage and a stable voltage provided by the stable voltage source are used as the driving voltage at the same time, the supply voltage is further adjusted until the driving voltage falls within the voltage range formed by the upper limit voltage and the lower limit voltage, and then continue to use only the supply voltage as the driving voltage.