Portable Ultrasonic Device Signal Interference Management
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Solution Overview
Problem
Portable ultrasonic diagnostic devices face signal quality issues due to interference between internal and high-frequency signals during data transmission to portable terminals, and noise occurs due to power consumption variations during data transmission and non-transmission periods.
Innovation Solution
The device includes a main circuit portion that transmits scan line or frame data during times when echo signals are not being received and generates electrical pulses for the next scan line or frame during data transmission periods, using a processor, pulse generator, beam former, and buffer to manage data transmission and prevent signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted to the portable terminal during ultrasonic image acquisition, then real-time monitoring and remote diagnosis are enabled, but signal quality deteriorates due to interference between internal signals and high-frequency transmission signals
Solution Approach 1:
The patent divides the signal processing into separate channels: a first receiving circuit for internal signals and a second receiving circuit for high-frequency transmission signals. This segmentation prevents interference between the two signal types while enabling simultaneous data transmission to the portable terminal.
Solution Approach 2:
The patent extracts the high-frequency transmission signal path from the internal signal path by using a dedicated second receiving circuit. This separation allows the internal signal processing to continue without being affected by the high-frequency transmission activities.
2Productivity
If data is continuously transmitted to the portable terminal, then real-time monitoring is achieved, but noise occurs in internal signals due to power consumption variations and load changes
Solution Approach 1:
The patent segments the power supply into separate paths: a first power supply for internal circuits and a second power supply for transmission circuits. This segmentation isolates the power consumption variations of transmission operations from the internal signal processing circuits, preventing noise generation.
Solution Approach 2:
The patent extracts the power supply for transmission operations from the main internal power supply. By providing dedicated power supply circuits for transmission functions, the system eliminates the coupling between transmission load variations and internal signal quality.
3Reliability
If multiple receiving circuits are used to handle both internal and transmission signals, then signal interference is prevented, but device complexity increases
Solution Approach 1:
The patent designs the second receiving circuit to handle both high-frequency transmission signals and serve as part of the overall signal reception system. This multi-functionality approach reduces the need for completely separate dedicated circuits while maintaining signal isolation.
Solution Approach 2:
The patent introduces a control circuit as an intermediary that coordinates between the first and second receiving circuits. This control circuit manages the timing and operation of both circuits, enabling them to work together without direct interference while maintaining system reliability.
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 approach improves signal quality by preventing signal interference and reduces noise occurrence, ensuring reliable ultrasonic image data transmission to portable terminals.
Implementation Method 1
a transducer which generates and emits an ultrasonic pulse from an applied electrical signal toward an object to be inspected and receives an echo signal therefrom
Data Source
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AI summary
A portable ultrasonic diagnostic device, according to the present invention, comprises: a transducer for generating an ultrasonic pulse from an applied electrical pulse, irradiating the ultrasonic pulse to a subject to be diagnosed, and receiving an echo signal; and a main circuit unit for generating an electrical pulse which is to be applied to the transducer, generating scanline data from the echo signal, and transmitting to a portable terminal the scanline data or frame data which comprises a predetermined number of scanline data items, wherein the main circuit unit transmits the scanline data or the frame data, during the time other than the time in which the echo signal is received, and generates the electrical pulse during the time other than the time in which the scanline data or the frame data is transmitted.