Macronix International had five patents in cybersecurity during Q2 2024. The patent filed by Macronix International Co Ltd in Q2 2024 describes a device with non-volatile memory cells and logic to generate and store a key using a physical unclonable function. The key is frozen in the memory cells to prevent changes, enhancing security. GlobalData’s report on Macronix International gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Macronix International had no grants in cybersecurity as a theme in Q2 2024.
Recent Patents
Application: Unchangeable physical unclonable function in non-volatile memory (Patent ID: US20240171384A1)
The patent filed by Macronix International Co Ltd describes a device that can be implemented on a single packaged integrated circuit or a multichip module. This device comprises a plurality of non-volatile memory cells and logic to use a physical unclonable function to produce a key, store the key in a set of non-volatile memory cells, and disable changes to data in the set of memory cells to freeze the key after storage. The physical unclonable function utilizes entropy derived from the non-volatile memory cells to generate the key, and authentication logic is required for successful authentication to enable the physical unclonable function to produce the key.
The claims associated with the patent detail the configuration and operation of the circuit, including the use of peripheral circuits, block lock bits, and security logic for external communication and data access. The method outlined in the patent involves executing a physical unclonable function to generate a key, storing the key in non-volatile memory cells, updating the key as needed, and disabling changes to the data stored in the memory cells to prevent alterations to the key. Successful authentication is required to enable the physical unclonable function, which can utilize entropy from the memory cells to produce the key. Additional features include comparing stored data with a predetermined pattern, utilizing the key for data access protocols, and testing the key for usability before disabling changes.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
