Visual Pre-emphasis Waveform Adjustment for Bit Error Rate Measurement
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Solution Overview
Problem
Existing methods for pre-emphasizing test signals to counteract distortion and attenuation in coaxial cables are cumbersome for users, as they require setting multiple parameters without intuitive visualization of the pre-emphasis waveform, making it difficult to correctly set parameters for accurate bit error rate measurement.
Innovation Solution
An emphasis-adding system that displays a pre-emphasis waveform image on a screen with a cursor for intuitive parameter setting, allowing users to visually adjust the amplitude and time, with features for skew and offset adjustments, enabling intuitive operation and accurate waveform generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional parameter setting methods are used for pre-emphasis, then bit error rate measurement can be performed, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The patent transforms the parameter setting process from a multi-dimensional numerical input task into a one-dimensional visual waveform adjustment task. Users interact with a displayed waveform image and adjust parameters by moving a cursor along the waveform, converting complex numerical parameter setting into simple positional adjustment on a graphical interface.
Solution Approach 2:
The patent creates a visual copy (waveform image) of the actual pre-emphasis waveform and displays it on screen. Users can see the waveform shape, amplitude, and timing characteristics visually, allowing them to understand and adjust the parameters without dealing with abstract numerical values. This visual copy serves as an intuitive interface for parameter control.
2Adaptability or versatility
If multiple parameters are set numerically, then pre-emphasis can be applied, but users cannot visualize the waveform and understand which portions are manipulated
Solution Approach 1:
The patent creates a visual copy (waveform image) of the actual pre-emphasis waveform and displays it on screen. Users can see the waveform shape, amplitude, and timing characteristics visually, allowing them to understand and adjust the parameters without dealing with abstract numerical values. This visual copy serves as an intuitive interface for parameter control.
Solution Approach 2:
The patent uses visual display of the waveform with different regions and characteristics visible on the screen. The waveform image shows amplitude variations and timing information in a visual format, allowing users to identify which portions of the waveform correspond to which parameters through visual inspection rather than numerical description.
Data Source
AI summary
A display part is provided with a display screen with a horizontal axis representing a time and a vertical axis representing an amount of modulation and a pre-emphasis waveform image is displayed on the display screen. In the pre-emphasis waveform image, a cursor can be arranged on a tap which corresponds to a portion in which a bit can be emphasized. An emphasis waveform addition part generates an emphasis waveform corresponding to the pre-emphasis waveform image on the display screen, based on an amount of amplitude changed according to movement of the cursor, and adds the emphasis waveform to the test signal. Thus, a user is allowed to make a setting with intuitive operation.