Bus Signal Output Circuit Using Clock-Derived High-Level Voltage
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Solution Overview
Problem
Existing communication devices connected to a bus with clock and data signal lines face challenges in efficiently transmitting signals without requiring additional power sources for high-level signal transmission, particularly when step-down elements cause voltage drops, complicating the matching of signal potentials and increasing manufacturing complexity.
Innovation Solution
The device incorporates an internal power source generation unit that generates a high-level signal potential, allowing it to match output signal potentials with the interface, and includes a voltage regulation unit that steps up the signal to cancel voltage drops, eliminating the need for native MOSFETs and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If step-down elements are used to transmit signals on the communication bus, then signal transmission is enabled, but voltage drops occur that complicate signal potential matching
Solution Approach 1:
The communication device generates its own internal high-level signal potential using a power source generation unit, making the system self-sufficient without requiring external power sources or complex potential matching circuits. The device serves its own power needs by converting the clock signal into the required potential levels.
Solution Approach 2:
The patent changes the electrical parameter (voltage potential) by using a voltage regulation unit that converts the clock signal voltage into the required high-level signal potential. This parameter transformation eliminates voltage drops and simplifies signal matching on the communication bus.
2Reliability
If additional power sources are added to compensate for voltage drops, then signal potential matching is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the power source function with the signal processing function by integrating the power source generation unit directly into the communication device. This combination eliminates the need for separate external power sources and simplifies the overall system architecture.
Solution Approach 2:
The clock signal serves multiple functions: it acts as both the communication signal and the power source for generating high-level signal potentials. This multi-functionality eliminates the need for dedicated power sources and reduces device complexity.
3Productivity
If native MOSFETs are used to match signal potentials, then transmission efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent replaces the need for specialized native MOSFETs with a voltage regulation unit that uses standard electronic components to achieve the same signal potential matching function. This substitution simplifies the manufacturing process while maintaining transmission 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
This solution enables efficient signal transmission without additional power sources and simplifies the manufacturing process by canceling voltage drops and accurately matching signal potentials, reducing costs and complexity.
Implementation Method 1
an oscillation unit configured to generate a clock signal
Implementation Method 2
a voltage regulation unit configured to generate an internal high-level signal potential in accordance with the clock signal
Data Source
AI summary
Provided is a device connected to a clock and data signal lines, comprising: a voltage input unit configured to be inputted with a clock signal as an input signal from the clock signal line and to generate first reference voltage corresponding to a high level of the clock signal; a reference voltage generation unit configured to be inputted with predetermined input voltage and to generate second reference voltage; a voltage regulation unit for generating regulation voltage by using the second reference voltage to convert a level of the first reference voltage; a drive unit for stepping down the regulation voltage to generate output voltage; a control unit; and an output unit connected with the control unit, the drive unit, and the data signal line, for outputting the output voltage to the data signal line in response to input of a high level of a control signal from the control unit.