Renesas Electronics had 15 patents in cybersecurity during Q1 2024. Renesas Electronics Corp’s patents focus on enhancing security in semiconductor devices by utilizing OTPs to manage software versions and keys, implementing redundant processors and error detection mechanisms for secure communication, and detailing cryptographic key installation methods for customer and manufacturer keys. These innovations aim to prevent unauthorized access, rollback attacks, and ensure secure encryption and decryption processes in semiconductor devices. GlobalData’s report on Renesas Electronics gives a 360-degree view of the company including its patenting strategy. Buy the report here.

Renesas Electronics grant share with cybersecurity as a theme is 26% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Software update system and software update method (Patent ID: US20240086170A1)

The patent filed by Renesas Electronics Corp. describes a software update system that aims to prevent software rollback attacks by managing software updates in a semiconductor device. The system involves encrypting update software, generating signatures from the software versions, and comparing these signatures to detect any rollback attempts. The semiconductor device stores version tables, updates them upon successful verification, and utilizes OTP memory for secure storage. The method also involves comparing signatures at system startup to further ensure the integrity of the software versions.

Additionally, the patent outlines a software update method that includes the use of encryption keys, multiple memories in the semiconductor device, and signature generation for verifying software updates. The method involves comparing signatures at different stages of the update process to prevent rollback attacks effectively. By utilizing a combination of encryption, signature generation, and memory management techniques, the system and method described in the patent provide a robust solution for ensuring the authenticity and integrity of software updates in semiconductor devices.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.