Density Trace Measurement for Frequency Domain Bitmaps
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Solution Overview
Problem
Conventional density measurements for frequency domain bitmaps are inconvenient for measuring occupancy across a large number of columns and difficult to quickly transmit between instruments or computers due to large file sizes.
Innovation Solution
A density trace is introduced, which measures the density of each column above a user-specified amplitude threshold, allowing for efficient representation and transmission of occupancy data, and can be used to generate a trigger signal by comparing it to a density threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional density measurements are used for frequency domain bitmaps, then occupancy can be measured, but the data file size becomes large and transmission becomes slow
Solution Approach 1:
The patent extracts only the essential density information from each column of the frequency domain bitmap, representing occupancy as a single density value per column rather than storing complete bitmap data. This extraction of critical information reduces data volume while preserving measurement precision.
Solution Approach 2:
The frequency domain bitmap is segmented into multiple columns, with density measured independently for each column. This segmentation allows for efficient processing and representation of occupancy data across the entire frequency spectrum without requiring storage of the complete bitmap.
2Measurement precision
If conventional density measurements are used for frequency domain bitmaps, then occupancy can be measured, but the data file size becomes large
Solution Approach 1:
The patent extracts only the essential density information from each column of the frequency domain bitmap, representing occupancy as a single density value per column rather than storing complete bitmap data. This extraction of critical information reduces data volume while preserving measurement precision.
Solution Approach 2:
The frequency domain bitmap is segmented into multiple columns, with density measured independently for each column. This segmentation allows for efficient processing and representation of occupancy data across the entire frequency spectrum without requiring storage of the complete bitmap.
3Productivity
If density trace is used to measure occupancy across many columns, then data transmission becomes faster, but measurement complexity increases
Solution Approach 1:
The patent changes the measurement parameter from complete bitmap data to density values per column. By transforming the data representation to focus on density as the key parameter, the system achieves faster transmission while the automated density calculation process manages the measurement complexity.
Data Source
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AI summary
A "density trace" (730) is formed by measuring the density of each column of a frequency domain bitmap (720) above a user-specified "amplitude threshold" (725). The density of each column equals the sum of the densities of all of the pixels in the column that are above the amplitude threshold divided by the sum of the densities of all of the pixels in the column. A density trace (730) provides a convenient way to define and represent the occupancy for a large number of columns, and also allows density data to be quickly transmitted from one instrument or computer to another. In some embodiments, a density trace is incorporated into a trigger detector (700) of a test and measurement instrument and used to generate a trigger signal. The trigger detector compares the density trace (730) to a user-specified "density threshold" (735) and generates the trigger signal when the value of any point of the density trace violates the density threshold.