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:
Dec. 21, 2021
Filed:
May. 04, 2020
Alab Inc., Tokyo, JP;
Masayuki Araki, Tokyo, JP;
ALAB INC., Tokyo, JP;
Abstract
A method for executing a falsification check of data transmitted from a data recording device including a processor and an A/D converter. The method includes Step Saof preparing a public-secret key pair; Step Saof inputting an analog signal obtained by a sensor into the A/D converter, while the A/D converter generates whole digital data consisting of signal data and noise data; Step Saof computing a hash value for the signal data using a hash function; Step Saof encrypting the hash value with either of the secret key or the public key; Step Saof writing the encrypted hash value into a noise area where the noise data is recorded, Step Sbof authenticating the received data; and Step Sbof determining whether the data transmitted from the data recording device is falsified.