Home Bus Signal Conversion via UART Translation
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Solution Overview
Problem
HomeBus communication systems require a synchronization clock, which limits their compatibility with chips that do not support this feature, such as the Microchip chip, and results in inefficient use of I/O resources and external circuits.
Innovation Solution
A translation-based signal generation method that converts asynchronous communication signals, like UART signals, into synchronous simulation signals compliant with the HomeBus system protocol, allowing HomeBus communication without a synchronization clock by using a modulation translation table to simulate synchronous communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a synchronization clock is used for HomeBus communication, then communication reliability is improved, but device complexity and I/O resource consumption increase
Solution Approach 1:
The patent introduces a translation-based intermediary mechanism that converts asynchronous UART signals into synchronous HomeBus signals through a modulation translation table. This intermediary translation layer enables chips without synchronization clock support to communicate reliably on the HomeBus system, resolving the contradiction between reliability and device complexity by using software-based signal transformation rather than hardware synchronization circuits
Solution Approach 2:
The patent replaces the mechanical/electrical synchronization clock system with an information-based translation approach. Instead of using physical synchronization signals and clock circuits, the system uses a translation-based method where asynchronous data is converted to synchronous format through software algorithms, eliminating the need for synchronization hardware while maintaining communication reliability
2Reliability
If a synchronization clock is used for HomeBus communication, then communication stability is improved, but I/O resources and external circuits are wasted
Solution Approach 1:
The patent extracts and eliminates the synchronization clock requirement from the HomeBus communication system. By using a translation-based approach where asynchronous signals are converted to synchronous format through software translation tables, the system removes the need for external synchronization circuits and I/O resources, thereby simplifying manufacturing while maintaining communication stability
Solution Approach 2:
The translation-based system enables chips to perform self-configuration and self-synchronization without external clock signals. The modulation translation table automatically handles the conversion between asynchronous and synchronous formats, allowing each chip to operate independently without requiring external synchronization infrastructure, thus improving ease of manufacture
3Device complexity
If translation-based signal generation is used, then device complexity is reduced, but signal conversion accuracy may deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-defining the modulation translation table that maps asynchronous UART signals to synchronous HomeBus signals before communication occurs. This pre-established translation framework ensures accurate signal conversion without requiring complex real-time processing, thereby maintaining manufacturing precision while reducing device complexity
Solution Approach 2:
The patent uses parameter changes by transforming the signal format from asynchronous to synchronous through controlled parameter modification. The modulation translation table systematically changes signal parameters (timing, polarity, format) to convert between communication protocols, ensuring accurate signal conversion while keeping the implementation simple and manageable
Data Source
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AI summary
A Home Bus System (HBS) circuit, applicable in implementing Home Bus (HB) communication via a microchip. The circuit comprises: a microchip, an HBS communication chip, a resistor, a capacitor, and a triode. The microchip comprises a universal asynchronous receiver-transmitter (UART) input pin and a Serial Peripheral Interface (SPI) output pin. The HBS communication chip comprises an input pin. The SPI output pin is connected to a base electrode of the triode and to a first end of the capacitor. A collecting electrode of the triode is connected to a first end of the resistor and to an input pin of the HBS communication chip. A transmitting electrode of the triode is grounded. A second end of the resistor is connected to a power supply. A second end of the capacitor is o grounded.