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Microsoft patents chip security checks for memory access

Microsoft describes a design for system-on-chip components that includes specific circuits to check if a processor has permission to read or write data in memory. These access circuits act as gatekeepers, verifying the authority of each memory request before allowing the transaction to proceed. The filing details how these checks help control access to different regions of memory within the chip.

Why it mattersThis is a standard hardware security improvement that helps protect data integrity within computer chips, which is a routine but important part of chip design.

In the filing’s own words

Components in a system-on-chip (SOC) may communicate through a mesh interconnect. Such components include processing circuits that may initiate memory transactions and memory circuits that may be access but memory transactions. The SOC also includes access circuits to control memory transactions directed to memory circuits through their component interfaces. The access circuits may receive memory transactions and generate indications of whether a processing circuit that initiated the memory transaction has authority to access a region of memory in the memory circuit according to the memory transaction. In some examples, execution of memory transactions may proceed according to the generated indications. In some examples, a desired access (e.g., reading, writing, executing) to a targeted memory address may be indicated by an instruction in the memory transaction.

What exactly they claim (claim 1)

1 - 20. (canceled)

Facts

Company
Microsoft (Microsoft Technology Licensing, LLC)
Official title
ACCESS CIRCUITS PROVIDING SECURE ACCESS TO MEMORY CIRCUITS IN SYSTEM ON CHIP (SOC) COMPONENTS AND RELATED METHODS
Publication number
US20260267549A1
Application number
19071392
Filed
Mar 5, 2025
Published
Sep 10, 2026
Inventors
4
Claims
21

Classified under

G06F 3/0655 Physics & computingG06F 3/0622 Physics & computingG06F 3/0679 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.