Architecture providing increased information display for long acquisitions or constrained memory bandwidth
First Claim
Patent Images
1. A method comprising:
- digitizing a signal under test (SUT) to provide a stream of digital samples representing amplitude values of said SUT over time; and
temporally segmenting said sample stream into a plurality time frames, each of said plurality of time frames comprising a plurality of time slices, each of said time slices comprising a plurality of amplitude values; and
counting the number of occurrences of each amplitude value within the digital samples associated with each time slice of each time frame to provide a histographic representation of amplitude values for each time slice of each time frame.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for rasterizing a digital sample stream by producing histograms for each of a plurality of time slices forming a display frame. Time slice histograms for at least one display frame are stored in a circular memory buffer and provided to a display raster for display. The first time slice displayed optionally comprises that time slice temporally associated with a trigger condition.
-
Citations
21 Claims
-
1. A method comprising:
-
digitizing a signal under test (SUT) to provide a stream of digital samples representing amplitude values of said SUT over time; and
temporally segmenting said sample stream into a plurality time frames, each of said plurality of time frames comprising a plurality of time slices, each of said time slices comprising a plurality of amplitude values; and
counting the number of occurrences of each amplitude value within the digital samples associated with each time slice of each time frame to provide a histographic representation of amplitude values for each time slice of each time frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A digital oscilloscope, comprising:
-
an analog to digital converter for digitizing a signal under test (SUT) to provide a stream of digital samples representing amplitude values of said SUT over time;
an acquisition rasterizer, for generating a histographic representation of sample values within each of a plurality of time slices;
a raster acquisition memory, for storing a plurality of time slice histograms to form thereby a stored frame of time slice histograms; and
a display raster memory, for periodically receiving a frame of time slice histograms to provide thereby image frames suitable for use by a display device. - View Dependent Claims (17, 18, 19, 20, 21)
-
Specification