Infrared Controller Brand Identification via Data Channel
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Solution Overview
Problem
Infrared controllers and transmission heads from different manufacturers often exhibit incompatibility due to non-uniform design specifications, leading to increased manufacturing costs and installation difficulties caused by the need for specific South Bridge control chipsets and incorrect coupling.
Innovation Solution
A method utilizing a loop circuit testing and two groups of direct access memory devices in the infrared controller to identify the brand name and transmission mode of the infrared transmission head, allowing for simultaneous data transmission and reception, reducing the number of leads required from the South Bridge control chipset and enabling automatic determination of compatible devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional South Bridge control chipset with 8 leads is used to identify infrared transmission head brand name, then brand name identification is achieved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the brand name identification function from the conventional 8-lead South Bridge control chipset connection method. Instead of using multiple dedicated identification leads, the invention utilizes the existing infrared data transmission channel to carry identification information, thereby eliminating the need for additional identification leads and reducing manufacturing cost while maintaining identification accuracy
Solution Approach 2:
The patent makes the infrared data transmission channel serve multiple functions: both data transmission and brand name identification. By encoding identification information within the data transmission protocol, the same physical channel performs dual roles, reducing the need for separate identification circuitry and lowering overall system complexity and cost
2Device complexity
If conventional infrared controller design with fixed potential levels on leads is used, then brand name identification is simplified, but adaptability to different manufacturers' infrared transmission heads is reduced
Solution Approach 1:
The patent implements dynamic identification where the controller adapts its identification method based on the connected infrared transmission head. Instead of fixed potential levels, the system uses flexible protocol-based identification that can accommodate different manufacturers' devices, achieving both simplicity and adaptability through software-based rather than hardware-fixed identification
Solution Approach 2:
The patent changes the identification approach from fixed electrical parameters (potential levels on leads) to flexible data protocol parameters. By encoding brand name and device type information within the data transmission stream, the system can dynamically adjust to different device specifications without hardware modification, enhancing compatibility while maintaining identification capability
3Ease of operation
If infrared transmission head brand name is not identified, then installation is simpler, but wrong infrared transmission head may couple with controller increasing installation difficulty
Solution Approach 1:
The patent performs brand name and device type identification automatically during the initial coupling phase, before full operation begins. This preliminary identification ensures compatibility is verified upfront, preventing wrong device coupling while maintaining installation simplicity through automated detection rather than manual verification
4Productivity
If separate direct access memory devices for transmission and reception test data are used, then simultaneous transmission and reception are supported, but device complexity increases
Solution Approach 1:
The patent merges the transmission test data storage and reception test data storage into a unified memory structure within the infrared controller. By using a single direct access memory device that can handle both transmission and reception data buffers, the system achieves simultaneous transmission and reception capability while reducing the number of separate memory components needed
Data Source
AI summary
A transmission method for identifying infrared transmission head is provided. The infrared transmission head is coupled to an infrared controller. The infrared controller is set to a test circuit mode. The infrared controller is programmed according to the test transmission mode associated with the test brand name of the infrared transmission head and test transmission data is transmitted. In the meantime, the infrared controller receives reception test data from the infrared transmission head according to the test transmission mode associated with the test brand name of the infrared transmission head. If the transmission test data and the reception test data are identical, the test brand name and associated test transmission mode are registered. The infrared transmission head operates according to the registered test brand name and associated test transmission mode of the infrared transmission head.