Image Display Device USB Mass Storage Emulation
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Solution Overview
Problem
The existing connection methods for image display devices require significant efforts, including the installation of dedicated device drivers and complex operations, to communicate effectively with computers, especially when using general-purpose interfaces like USB, which hinders ease of use and efficiency in data transmission.
Innovation Solution
An image display device and an image supply device are designed to communicate using a general-purpose interface, with a communication controller identifying the image display device as a mass storage class, allowing for easy data transmission and reducing the need for dedicated drivers, and incorporating a data memory unit and image transmission program to optimize data transfer by transmitting only partial image updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated communication protocol and device driver are used for image display devices, then data communication reliability is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent applies universality by enabling the image display device to be recognized as a mass storage device through the USB Mass Storage Class protocol. This allows the same USB interface to serve multiple functions: both as a standard mass storage device and as an image display device, eliminating the need for dedicated communication protocols and device drivers while maintaining reliable data communication.
2Reliability
If a dedicated device driver is installed for the image display device, then data communication reliability is improved, but device complexity and ease of manufacture deteriorate
Solution Approach 1:
The patent applies universality by using the existing USB Mass Storage Class protocol that is already supported by operating systems like Windows. This eliminates the need to develop and install dedicated device drivers, reducing both device complexity and manufacturing effort while ensuring reliable data communication through the standardized protocol.
3Manufacturing precision
If full image data is transmitted to the image display device, then image quality is improved, but data transmission time and energy consumption increase
Solution Approach 1:
The patent applies segmentation by transmitting only the changed regions of the image rather than the entire image data. The image data is divided into different regions, and only the portions that have changed are transmitted to the image display device, significantly reducing data transmission time and energy consumption while maintaining image quality in the updated regions.
Solution Approach 2:
The patent applies partial action by transmitting only the necessary portion of image data (the changed regions) rather than the complete image. This partial transmission approach reduces data volume and transmission time while still achieving the goal of updating the display, avoiding the excessive action of transmitting unnecessary data.
Data Source
AI summary
There is provided an image display device which is connected to a general-purpose interface connectable to a plurality of types of general-purpose devices as an interface for an image supply device and displays images sequentially based on a plurality of image data sequentially supplied from the image supply device, the image display device including a communication controller that controls data communication through the interface and an image display unit that displays an image based on the image data, wherein the communication controller transmits identification information representing a predetermined general-purpose device other than the image display device as identification information representing the type of the image display device to the image supply device for starting the data communication, and wherein the communication controller receives the image data from the image supply device as the general-purpose device and supplies the received image data to the image display unit for display.