Method and apparatus for display generation in digital oscilloscope
OwnerVictor L. Hanseninventor
Life of this patent
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Abstract
A digital oscilloscope produces a waveform display of a test signal from a unit-under-test, and includes the following circuitry. A sampler generates a plurality of samples representing the test signal. An interpolation filter produces a plurality of interpolated samples intermediate the samples from the sampler, and also passes the samples representing samples from the sampler substantially unchanged. A display generator is coupled to the interpolation filter and generates an array of pixels representing the waveform display corresponding to the samples from the interpolation filter. The pixels in the array corresponding to samples from the sampler have a higher intensity than interpolated samples.
Claims10
In a digital oscilloscope, circuitry for producing a waveform display of a test signal, comprising:
- a sampler, for generating a plurality of samples representing the test signal;
- an interpolation filter, coupled to the sampler, for producing a sequence of interpolated samples including samples representing the samples from the sampler substantially unchanged, and interpolated samples intermediate the samples from the sampler;
- a display generator, coupled to the interpolation filter, for generating an array of pixels representing a waveform image corresponding to the interpolated samples, in which pixels representing the test signal have a higher intensity than remaining pixels.
Dependencies are inferred from the claim text.