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Scaling persistence data with interpolation

An interpolation algorithm and data technology, applied in digital variable display, digital variable/waveform display, phase angle between voltage and current, etc., can solve the problem of users losing useful information, displaying and resetting continuous data, and taking a long time And other issues

Inactive Publication Date: 2005-05-18
LECROY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this approach is that resizing the display has to reset the persistent data (and another accumulation)
However, it may take a long time to capture enough useful data
Therefore, whenever the persistent data is reset, such as when scaling or zooming the display, the user not only loses useful information, but also has to wait for the persistent data to accumulate again

Method used

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  • Scaling persistence data with interpolation
  • Scaling persistence data with interpolation
  • Scaling persistence data with interpolation

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Embodiment Construction

[0033] Detailed description of the preferred embodiment

[0034] Preferred embodiments of the apparatus and method according to the invention are described with reference to the accompanying drawings.

[0035] A persistence system constructed in accordance with the present invention is a flexible design that breaks through the constraints imposed by the association / correlation between persistence data and display size. The fundamental gist of the design is that the storage of persistent data is completely separate from the display system so that it can be accumulated in a data buffer of any desired size, independent of the display size. Therefore, according to the present invention, a new operation function has been developed allowing the user to zoom in / out the display of any part of the accumulated continuous data. Additionally, various interpolation methods may be manually selected by the user or may be automatically selected to match the size of the persistent data to the...

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Abstract

An oscilloscope device for scaling and displaying continuous data using interpolation. The oscilloscope device captures the waveform and accumulates continuous data of the captured waveform in a result buffer. The size of persistent data is user selectable. The processor uses an interpolation algorithm to convert the continuous data to the size of the buffer in the display. The user can select an area of ​​interest in the continuous data to be scaled and displayed. This way persistent data can be zoomed in / out and centered on the display. The interpolation algorithm can be automatically selected from standard, bilinear, bicubic or supersampling algorithms or set by the user.

Description

Background of the invention [0001] In general, the present invention relates to methods and apparatus for scaling continuous data accumulated in a digital storage oscilloscope for display using interpolation. [0002] Traditionally, digital storage oscilloscopes (DSOs) capture electrical signals (waveforms) and allow the user to observe the trace of the captured signal in a time (x-axis)-magnitude (y-axis) display. In addition to simply capturing and displaying individual signal traces, DSOs also accumulate data from periodic signals. This repetitive (or continuous) captured and stored data is called persistent data. Persistent data is a powerful tool for analyzing signals because it can reveal signal features and events that are not discernible within individual traces. [0003] In traditional DSO, persistent data is constrained by the display system. This is because persistent data is accumulated at the same scale as the display. For example, if the display is 600 pixels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R13/20G01R13/02G01R13/34G01R25/00
CPCG01R13/0227
Inventor G·里特M·T·米勒T·坎皮歇
Owner LECROY