GPU-Based EDID Storage for LVDS Display Transmission

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Solution Overview

Problem

Existing image transmission apparatuses require additional read-only memory (ROM) to store configuration data for display panels, increasing manufacturing costs and access time, and they lack efficient methods to handle display panels without extended display identification data (EDID) information.

Innovation Solution

An image transmission apparatus with a graphic processing unit (GPU) and transmitter that obtains EDID information via an I2C signal, converts DP data streams into LVDS data streams using configuration data, and stores configuration settings in registers or memory, eliminating the need for additional ROM and allowing for extensible configuration settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional ROM is used to store configuration data for display panels, then configuration data can be stored reliably, but manufacturing costs increase and access time increases

Engineering Contradiction:
Improveconfiguration data storage reliabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the configuration data storage function into the existing GPU memory resources. The GPU uses its existing memory (such as video memory or frame buffer memory) to store configuration data for multiple display panels, eliminating the need for separate ROM components. This integration reduces component count, lowers manufacturing costs, and simplifies the overall system architecture while maintaining reliable configuration data storage.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If additional ROM is used to store configuration data for display panels, then configuration data can be stored reliably, but access time increases

Engineering Contradiction:
Improveconfiguration data storage reliabilityVSAvoidconfiguration data access time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

By integrating configuration data storage into the GPU's existing memory system, the patent enables faster access times. The GPU can access configuration data from its high-speed memory resources without the additional access delay that would result from reading from a separate ROM component. This integration leverages the GPU's existing memory bandwidth and access pathways, reducing overall system latency.

Inventive Principle:
Principle #5Merging (Combining)

3Stability of the object's composition

If fixed ROM is used to store configuration data, then configuration data is stable, but adaptability to different display panels is limited

Engineering Contradiction:
Improveconfiguration data stabilityVSAvoidconfiguration data extensibility
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic configuration data storage system where the GPU memory can be programmed and updated with configuration data for different display panel types. Instead of fixed ROM contents, the system can load and store configuration parameters (such as resolution, refresh rate, color depth) for various display panels including LCD, OLED, and other technologies. This dynamic approach maintains data stability during operation while providing extensive adaptability across different display technologies and specifications.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9710875B2Image transmission apparatus and image processing method thereof
Publication Date: 2017.07.18 VIA TECH INC
  • US9710875B2 patent drawing
  • US9710875B2 patent drawing
  • US9710875B2 patent drawing

AI summary

An image transmission apparatus for providing a low voltage differential signaling (LVDS) data stream to a display panel is provided. The image transmission apparatus includes a transmitter and a graphic processing unit (GPU). The transmitter obtains an extended display identification data (EDID) according to an inter integrated circuit signal from the display panel. The GPU provides configuration data according to the EDID, and provides a display port (DP) data stream according to an image data. The transmitter obtains a transfer parameter according to the configuration data, and converts the DP data stream into the LVDS data stream according to the transfer parameter.