Two-Terminal Semiconductor Device for Asynchronous Serial Communication
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Solution Overview
Problem
Semiconductor devices with low-cost fabrication require efficient data communication and power management using asynchronous serial communication, while minimizing energy loss and internal circuit size, and ensuring error-free data transfer.
Innovation Solution
A semiconductor device with two terminals that shares one terminal for data communication and power, utilizing a rectification circuit with a diode and capacitor for power efficiency, and includes a CMOS component for data processing, along with a controller for generating a reference clock and managing data transfer modes to minimize energy loss and circuit size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a semiconductor device uses low-cost fabrication technology, then manufacturing cost is reduced, but device performance and integration capability are limited
Solution Approach 1:
The patent implements a two-terminal semiconductor device where one terminal serves dual purposes: data communication and power supply. This multi-functionality allows low-cost fabrication while maintaining adequate performance by reducing the number of required terminals and associated circuitry, thus resolving the contradiction between manufacturing cost and device capability
2Device complexity
If a semiconductor device uses one shared terminal for data communication and power source, then device complexity and size are reduced, but power supply stability and data communication reliability may deteriorate
Solution Approach 1:
The patent employs periodic action by using different voltage levels and timing sequences for data communication versus power supply functions. The device switches between operational modes (data mode and power mode) with distinct voltage characteristics, allowing one terminal to reliably serve both purposes without interference, thus resolving the reliability concern
3Use of energy by moving object
If a semiconductor device uses asynchronous serial communication with shared terminal, then power consumption is reduced, but data transfer efficiency and speed may be limited
Solution Approach 1:
The patent implements dynamic baud rate adjustment capability where the communication speed can be varied based on operational requirements. The device can switch between different baud rates (e.g., 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200) to optimize between power consumption and data transfer speed, resolving the contradiction between energy efficiency and productivity
4Ease of manufacture
If a semiconductor device minimizes internal circuit size for low-cost fabrication, then manufacturing cost is reduced, but energy loss during data transfer may increase
Solution Approach 1:
The patent implements a rectification circuit that can harvest power from the data signal itself on the two-terminal device. This self-service approach allows the device to generate its own operating power from the communication signal, eliminating the need for separate power supply circuitry while minimizing energy loss during data transfer, thus resolving the contradiction between simplified fabrication and energy efficiency
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 stable and efficient asynchronous serial communication with reduced energy loss and internal circuit size, allowing flexible utilization in various applications by determining data transfer modes and generating necessary clock signals for error-free data transfer.
Implementation Method 1
a rectification circuit including a diode and a first capacitor
Implementation Method 2
a rectification circuit including a diode and a first capacitor
Data Source
AI summary
The present invention discloses an asynchronous serial communication system and method. The asynchronous serial communication system may include a semiconductor device having two terminals and configured to receive a voltage required for an operation from data transmitted through one terminal; and a controller configured to perform asynchronous serial communication with the semiconductor device with two terminals. The asynchronous serial communication system may perform asynchronous serial communication between the semiconductor device and the controller in order to write or read data through the one terminal.