Single-Wire Communication Circuit Using PWM Through One Terminal
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Solution Overview
Problem
Current communication systems require multiple terminals for transmitting and receiving commands and data, limiting the miniaturization of electronic circuits and increasing costs due to the need for multiple wires and pins.
Innovation Solution
Implementing a single wire communication system that uses a single terminal to transmit and receive both commands and data, employing pulse width modulation to encode signals, allowing for serial transmission and decoding of commands and data using a pulse width decoder and separate decoders for command and data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple terminals are used for communication, then communication functionality is improved, but device size and cost increase
Solution Approach 1:
The patent combines multiple communication functions (data input, data output, command input, command output) into a single terminal. The terminal multiplexer circuit receives multiple types of signals through one terminal and routes them to appropriate destinations, eliminating the need for separate terminals for each function. This merging approach maintains full communication functionality while reducing the number of terminals required.
Solution Approach 2:
The single terminal is designed to handle multiple functions universally. The terminal can receive both data and commands, and the system can operate in different modes (transmitting, receiving, bidirectional communication) through a single terminal interface. The terminal multiplexer and mode control circuits enable this multi-functionality, allowing one terminal to replace what would traditionally require four separate terminals.
2Adaptability or versatility
If multiple terminals are used for communication, then communication functionality is improved, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple terminal connections into a single terminal, reducing the number of pads and bond wires required on the integrated circuit. The terminal multiplexer circuit consolidates multiple signal paths into one physical terminal, directly reducing manufacturing complexity and material costs associated with creating and connecting multiple separate terminals.
Solution Approach 2:
By designing a universal terminal that can perform multiple communication functions, the patent reduces the total number of terminals needed in the system. This universality translates to fewer manufacturing steps, less material usage, and simplified assembly processes, all of which contribute to lower manufacturing costs while maintaining complete communication functionality.
3Adaptability or versatility
If multiple wires are used for communication, then communication capability is improved, but device miniaturization is limited
Solution Approach 1:
The patent merges four separate wire connections (for data input, data output, command input, command output) into a single wire. The terminal multiplexer circuit receives multiple signal types through this single wire and separates them internally, enabling full communication capability with only one wire connection. This dramatically reduces the space required for wire routing and terminal placement, facilitating device miniaturization.
4Adaptability or versatility
If more pads and pins are used, then communication terminals are improved, but chip size increases
Solution Approach 1:
The patent combines the functionality of four separate pads/pins into a single pad/pin. The terminal multiplexer circuit is designed to accept multiple signal types through one physical connection point, eliminating the need for multiple discrete pads and bond wires. This consolidation directly reduces the perimeter area required for pad placement and the overall chip size.
Data Source
AI summary
Embodiments of the present invention include systems and methods of control using a single wire. The systems and methods presented allow sending or receiving commands and data through a single wire. In one embodiment, commands and data are received by the control system through a single terminal. In another embodiment, commands and data are received and transmitted from the control system through a single terminal.