Hybrid IR Transceiver Using Frequency Filters for Protocol Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional IR transmission systems require separate mechanisms for IrDA and CIR protocols, leading to physical errors when a common IR transceiver is used, as they cannot distinguish between the protocols, necessitating user intervention to switch modules and causing errors.
Innovation Solution
A hybrid IR transmission system employing an IR decoding circuit, a common IR transceiver, and a filter circuit that includes high pass, low pass, or band stop filters to separate and direct IR signals to the appropriate module based on carrier frequency, eliminating the need for protocol distinction and preventing physical errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common IR transceiver is used for both IrDA and CIR protocols, then device complexity is reduced and integration is improved, but physical errors occur because the transceiver cannot distinguish between different protocol signals
Solution Approach 1:
The patent segments the signal processing path by introducing filter circuits that divide the incoming IR signals into different frequency bands. The filter circuit separates IrDA signals (higher frequency) from CIR signals (lower frequency), directing each to the appropriate decoding module. This segmentation allows a single common transceiver to reliably support multiple protocols without cross-interference.
Solution Approach 2:
The filter circuit acts as an intermediary between the common IR transceiver and the protocol-specific decoding modules. It mediates the signal flow by filtering and directing signals based on their frequency characteristics, preventing incorrect signals from reaching inappropriate decoders and thus eliminating physical errors.
2Reliability
If separate IrDA and CIR transmission systems are used, then signal decoding reliability is maintained, but device complexity increases and integration is reduced
Solution Approach 1:
The patent merges the IrDA and CIR transmission systems by using a single common IR transceiver for both protocols. The filter circuit enables this consolidation by ensuring that signals from the common transceiver are correctly directed to the appropriate decoding module, maintaining reliability while reducing the total number of transceivers needed.
Solution Approach 2:
The common IR transceiver is designed with multi-functionality to handle both IrDA and CIR protocols. The filter circuit and protocol-specific decoding modules work together to enable this universal transceiver to reliably process different protocol types without requiring separate dedicated transceivers for each protocol.
3Reliability
If error recovery solutions are applied to handle physical errors, then signal decoding reliability is improved, but ease of operation deteriorates due to user intervention requirements
Solution Approach 1:
The filter circuit performs preliminary action by proactively filtering and directing signals to the correct decoding module before any errors can occur. This preventive approach eliminates the need for error recovery mechanisms and user intervention, as signals are correctly routed from the start based on their frequency characteristics.
Solution Approach 2:
The system achieves self-service through automatic protocol identification and signal routing. The filter circuit automatically distinguishes between IrDA and CIR signals based on frequency and directs them to the appropriate decoder without requiring user input or error recovery procedures, making the system both reliable and easy to operate.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless integration of IrDA and CIR protocols using a common IR transceiver, automatically directing signals to the correct module, thus preventing physical errors and simplifying user interaction by eliminating the need for manual switching.
Implementation Method 1
The filter circuit is coupled between the IR decoding circuit and the common IR transceiver for processing the first IR signal received from the common IR transceiver into a second IR signal accessible to either one of the IrDA module and the CIR module for decoding
Data Source
AI summary
A hybrid IR transmission system implements at least two IR transmission protocols with a common IR transceiver. The hybrid IR transmission system includes an IR decoding circuit, a common IR transceiver and a filter circuit. The IR decoding circuit includes an IrDA module for decoding IR signals in IrDA protocol and a CIR module for decoding IR signals in CIR protocol. The common IR transceiver receives a first IR signal in either IrDA or CIR protocol. The filter circuit processes the first IR signal into a second IR signal accessible to one of the IrDA module and the CIR module for decoding.