Timing Controller Register Management via AUX Channel
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Solution Overview
Problem
Current methods for updating data in the internal register of a timing controller within a TFT-LCD module require disassembly and reassembly, which is inefficient and costly.
Innovation Solution
The use of an AUX channel to manage the internal register of a timing controller, allowing data updates through an AUX channel and I2C-over-AUX channel, enabling access to different data regions without physical disassembly, using a command analyzer and AUX-I2C converter to convert commands and transmit data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the timing controller is disassembled from the TFT-LCD module to update data in the internal register, then the data can be accessed and updated, but the process becomes time-consuming and costly due to disassembly and reassembly requirements
Solution Approach 1:
The patent introduces an intermediary communication interface (I2C or SPI bus) that mediates between the testing device and the internal register of the timing controller. This intermediary channel allows data to be transmitted directly to the internal register without requiring physical disassembly of the timing controller from the TFT-LCD module, thus resolving the contradiction between ease of data update and time loss
Solution Approach 2:
The patent segments the communication paths by distinguishing between the main display data path and the auxiliary control data path. The auxiliary channel (I2C/SPI) is separated from the main display interface, allowing independent access to the internal register for data updates while the timing controller remains assembled in the module, eliminating the need for disassembly and reassembly operations
2Ease of operation
If the timing controller is disassembled and reassembled for each data update, then the internal register can be accessed, but manufacturing efficiency and productivity decrease
Solution Approach 1:
The patent implements preliminary action by pre-configuring the auxiliary communication channel (I2C or SPI bus) during the manufacturing process setup. This preliminary configuration enables direct access to the internal register through software commands without requiring subsequent physical disassembly operations, thereby maintaining high manufacturing productivity while enabling easy data updates
Solution Approach 2:
The auxiliary communication interface acts as a mediator that enables productivity improvement by providing a direct data path to the internal register. This intermediary channel eliminates the need for repeated disassembly and reassembly cycles, allowing multiple data updates to be performed quickly without impacting manufacturing efficiency
3Ease of operation
If the timing controller is disassembled for data updates, then the internal register is accessible, but development and evaluation costs increase
Solution Approach 1:
The patent enables self-service by allowing the timing controller to receive data update commands directly through its internal register via the auxiliary communication channel. The timing controller can process and apply data updates autonomously without requiring external physical intervention or disassembly, thereby reducing development and evaluation costs while maintaining ease of operation
Data Source
AI summary
A method of managing an internal register of a timing controller includes receiving and analyzing a command, accessing only a first data region for storing display port configuration data through an AUX channel when the command is a native-AUX command, and accessing a second data region for storing one of first data related to an operation of the timing controller or second data related to a display driven by the timing controller through an I2C-over-AUX channel when the command is I2C-over-AUX command. Related methods of operating a test device are also disclosed.