Integrated Circuit Compliance Circuitry with Authenticated Resource Limits

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Solution Overview

Problem

Export restrictions on integrated circuits (ICs) due to resource limitations, such as data rates and operating frequencies, force manufacturers to either forego exports or produce reduced-resource versions, negatively impacting profits and functionality.

Innovation Solution

Incorporation of compliance circuitry that monitors resource metrics using a hardware-embedded authentication metric, performing remedial actions if restrictions are exceeded, ensuring compliance through dedicated communication paths and secure authentication processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If export restrictions are imposed on IC devices based on resource metrics, then compliance with government regulations is improved, but profits and device functionality are reduced

Engineering Contradiction:

Improvecompliance with export regulationsVSAvoidprofits and device functionality

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements dynamic resource restriction by using compliance circuitry to monitor resource metrics in real-time and selectively enable or disable functional circuitry based on whether export thresholds are exceeded. This allows the IC device to dynamically adjust its resource availability rather than being statically restricted, thereby maintaining full functionality for compliant users while ensuring regulatory compliance.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of resource availability by using an authentication metric to control whether full or restricted resources are made available. The compliance circuitry monitors resource metrics and modifies the operational parameters of functional circuitry based on authentication results, allowing the same physical hardware to operate at different resource levels depending on compliance status.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If reduced-resource versions of IC devices are manufactured for export, then compliance with resource restrictions is improved, but device functionality and profits are negatively impacted

Engineering Contradiction:

Improvecompliance with resource restrictionsVSAvoiddevice functionality

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent makes a single IC device universal by enabling it to serve both domestic and export markets without requiring separate hardware versions. The compliance circuitry and authentication mechanism allow the same device to operate with full resources for authorized domestic use or with restricted resources for export, eliminating the need to manufacture different device versions for different markets.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Inventive Principle:

Principle #15Dynamics

3Reliability

If compliance circuitry is added to monitor resource metrics, then enforcement of export restrictions is improved, but device complexity increases

Engineering Contradiction:

Improveenforcement of export restrictionsVSAvoidcircuitry structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the compliance monitoring function with the existing resource metric generation logic within the functional circuitry. The compliance circuitry reuses the same resource metrics that are already being generated for normal operation, eliminating the need for separate monitoring infrastructure and reducing overall device complexity while still providing comprehensive compliance enforcement.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250335683A1Secure solutions for resource-restrictions on integrated circuits

Publication Date: 2025.10.30 XILINX INC

AI summary

Embodiments herein describe secure solutions for resource-restrictions on integrated circuits. In an example, dedicated compliance circuitry monitors resource metrics of functional circuitry over dedicated communication infrastructure based on a hardware-embedded authentication metric, and performs a remedial action if the resource metrics exceed resource restrictions (e.g., disables the functional circuitry). The compliance circuitry may include a dedicated processor, non-reprogrammable storage circuitry encoded with first instructions and the authentication metric, and reprogrammable storage circuitry encoded with second instructions. The processor executes the first instructions on power-up. The first instructions cause the processor to authenticate the second instructions based on the authentication metric, and execute the second instructions if the second instructions are authenticated. The second instructions cause the processor to monitor the resource metric and perform the remedial action. The second instructions may be modified but will not pass authentication if the modification is not encoded based on the authentication metric.