A BIOS device

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By designing microcontrollers and analog switch chips in BIOS devices, combined with the storage and comparison mechanism of redundant BIOS firmware, the problem of BIOS being easily tampered with and unable to be repaired online is solved, improving security and reducing costs.

CN222704964UActive Publication Date: 2025-04-01HANGZHOU EBOYLAMP ELECTRONICS CO LTD

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Patent Information

Application Number: CN202421464003.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-06-25
Publication Date: 2025-04-01
Estimated Expiration: 2034-06-25

Application Information

Patent Timeline

25 Jun 2024

Application

CN202421464003.6

01 Apr 2025

Publication

CN222704964U

IPC: G06F1/18; G06F21/12; G06F21/71

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Application Domain

Internal/peripheral component protection Digital processing power distribution

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AI Technical Summary

Technical Problem

In the prior art, BIOS redundant solutions are easily read offline and cannot be repaired online. BIOS verification requires customized software, which is very expensive to develop.

Method used

A BIOS device is designed, including a microcontroller, an analog switch chip, a CPU, a nonvolatile memory chip and a redundant BIOS firmware. By storing the second redundant BIOS firmware in the microcontroller, it prevents tampering, and comparing the main BIOS firmware with the backup BIOS firmware in the microcontroller to achieve online checksum repair.

Benefits of technology

Improves the security of BIOS, prevents malicious tampering, and reduces the cost of BIOS verification, and realizes the online repair function.

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Abstract

The utility model discloses a BIOS device, including a single-chip computer, an analog switch chip, a CPU, a first non-volatile storage chip, a second non-volatile storage chip, a third non-volatile storage chip, a main BIOS firmware and a backup BIOS firmware, wherein the main BIOS firmware is stored in the first non-volatile storage chip, and the backup BIOS firmware includes a first redundant BIOS firmware and a second redundant BIOS firmware. By storing the third non-volatile storage chip storing the second redundant BIOS firmware in the single-chip computer, the BIOS device can prevent the second redundant BIOS firmware stored in the single-chip computer from being read and maliciously tampered, thereby improving security; at the same time, the main BIOS firmware is compared with the backup BIOS firmware to verify the BIOS firmware information, and when the verification fails, the main BIOS firmware information is repaired, and the verification process does not require customized software, thereby reducing costs.

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