CXL Automotive Memory Buffering for Heat-Limited Sensor Data Throughput

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Solution Overview

Problem

High-bandwidth memory devices are vulnerable to heat and difficult to miniaturize, leading to bottlenecks in data storage and processing for automotive memory devices, which affects the overall performance of electronic systems in vehicles.

Innovation Solution

An integrated memory device with a CXL memory interface circuit, an integrated controller, a first volatile memory device, and a non-volatile memory device, which reads and stores sensor data in the volatile memory and then transfers it to the non-volatile memory, bypassing the host device to manage data efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If high-bandwidth memory devices are used to handle large amounts of sensor data, then data processing speed is improved, but the device becomes vulnerable to heat and difficult to miniaturize

Engineering Contradiction:

Improvedata processing speedVSAvoidheat vulnerability

Core Design Contradiction:

SpeedVSTemperature

Solution Approach 1:

The memory system is divided into multiple independent memory banks (first memory bank, second memory bank, third memory bank) that can operate simultaneously. This segmentation allows parallel data processing across multiple banks, increasing overall throughput without requiring a single high-bandwidth memory device that would generate excessive heat and be difficult to miniaturize.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a hierarchical memory structure where volatile memory devices are integrated within the memory device package, which in turn connects to the host device. This nested arrangement allows efficient data buffering and processing close to the data source, reducing the need for high-bandwidth external memory connections that would generate heat.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Speed

If high-bandwidth memory devices are used to handle large amounts of sensor data, then data processing speed is improved, but device size increases making miniaturization difficult

Engineering Contradiction:

Improvedata processing speedVSAvoiddevice size

Core Design Contradiction:

SpeedVSVolume of moving object

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent combines volatile memory devices with non-volatile memory devices in an integrated memory device package. This merging allows the system to handle large amounts of sensor data efficiently while maintaining a compact form factor, as the integrated design reduces the overall space required compared to separate high-bandwidth memory solutions.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If sensor data is processed through the host device, then data management is simplified, but processing efficiency decreases creating bottlenecks

Engineering Contradiction:

Improvedata management simplicityVSAvoidprocessing efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The integrated controller performs preliminary data processing and filtering operations on sensor data before it reaches the host device. By pre-processing data in the integrated memory device, the system reduces the burden on the host device while maintaining efficient data management, thus resolving the bottleneck without sacrificing operational simplicity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The integrated controller acts as an intermediary between the sensor device and the host device. It manages data flow, performs preliminary processing, and handles memory operations, thereby improving processing efficiency while keeping the host device's role simplified. This intermediary layer eliminates bottlenecks without complicating the overall system operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260003541A1Automotive memory device, electronic system including memory device, and operating method of electronic system

Publication Date: 2026.01.01 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic system which is mounted on a vehicle includes a first sensor device that detects first environment information of the vehicle and generates first sensor data, an integrated memory device including a CXL memory interface circuit, an integrated controller, a first volatile memory device, and a non-volatile memory device, and a host device including a CXL host interface circuit. The integrated controller reads the first sensor data from the first sensor device, stores the first sensor data in the first volatile memory device, stores the first sensor data, which is buffered in the first volatile memory device, in the non-volatile memory device, and provides the first sensor data, which is buffered in the first volatile memory device, to the host device through the CXL memory interface circuit and the CXL host interface circuit.