Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method and apparatus for displaying an acquired signal on an oscilloscope. The method comprises the steps of acquiring an analog signal, digitizing the analog signal and determining a plurality of samples generated by the digitizing that are to be represented by a same vertical pixel column on a display. Thereafter, a histogram of the values of the determined plurality of samples is generated, and a display characteristic of information displayed in the vertical pixel column is modified based upon the generated values of the histogram.

Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method and apparatus for displaying an acquired signal on an oscilloscope. The method comprises the steps of acquiring an analog signal, digitizing the analog signal and determining a plurality of samples generated by the digitizing that are to be represented by a same vertical pixel column on a display. Thereafter, a histogram of the values of the determined plurality of samples is generated, and a display characteristic of information displayed in the vertical pixel column is modified based upon the generated values of the histogram.

Abstract: An oscilloscope apparatus for scaling and displaying persistence data using interpolation. The oscilloscope apparatus acquires a waveform and accumulates persistence data of the acquired waveform in a results buffer. The size of the persistence data is selectable by the user. A processor scales the persistence data using an interpolation algorithm to the size of a buffer in the display. The user may select a region of interest within the persistence data for scaling and display. In this manner, the persistence data can be zoomed in/out and centered on the display. The interpolation algorithm may be automatically selected or set by the user from standard, bi-linear, bi-cubic, or super-sampling algorithms.

Abstract: A method and apparatus for capturing an analog waveform on a serial bus. The method comprises the steps of designating a predetermined digital data sequence, decoding a serial data signal carried on a serial data bus, and comparing the decoded serial data signal to the predetermined digital data sequence. When it is determined that a portion of the decoded serial data matches the predetermined digital data sequence, the portion of the serial data signal corresponding to the matching portion of the decoded serial data signal is marked.

Abstract: A method for displaying a compacted data signal, comprising the steps of acquiring a data signal comprising a plurality of data values; computing a compaction table based upon said acquired data signal; generating a min/max pair for all data values of said data signal associated with each of a plurality of vertical pixel columns of a display device; drawing a single vertical line for each min/max pair; and repeating said acquiring, computing, generating and drawing steps for each data signal acquisition.

Abstract: An oscilloscope, comprising a display, a display controller for controlling information to be displayed on the display, and an acquisition system for acquiring a sequence of waveforms. Two or more of the sequentially acquired waveforms are displayed employing a small vertical shift and a small horizontal shift, thus resulting in a diagonal positioning of each waveform relative to each previously drawn waveform.

Abstract: An oscilloscope apparatus for scaling and displaying persistence data using interpolation. The oscilloscope apparatus acquires a waveform and accumulates persistence data of the acquired waveform in a results buffer. The size of the persistence data is selectable by the user. A processor scales the persistence data using an interpolation algorithm to the size of a buffer in the display. The user may select a region of interest within the persistence data for scaling and display. In this manner, the persistence data can be zoomed in/out and centered on the display. The interpolation algorithm may be automatically selected or set by the user from standard, bilinear, bi-cubic, or super-sampling algorithms.

Abstract: A method for displaying a compacted data signal, comprising the steps of acquiring a data signal comprising a plurality of data values; computing a compaction table based upon said acquired data signal; generating a min/max pair for all data values of said data signal associated with each of a plurality of vertical pixel columns of a display device; drawing a single vertical line for each min/max pair; and repeating said acquiring, computing, generating and drawing steps for each data signal acquisition.

Abstract: An oscilloscope apparatus and method of processing waveform data using a streaming architecture. The apparatus has multiple processing objects (processors) that share a common cache memory in which the waveform data is stored during processing. Each processing object performs a sequential processing operation by retrieving a “chunk” or portion of the waveform from the memory, processes the chunk of data, and re-stores the processed data into the same location in the cache memory. This process is generally repeated until the entire waveform has been sequentially processed. The apparatus operates using a “pull” design wherein the last processor requests the next chunk to be processed from the preceding processor. In this manner, the waveform data is essentially processed by pulling it through the sequence of processing objects. The multiple processing objects may be implemented as a sequence of software processing objects in a processing thread or as separate hardware processors.

Abstract: An oscilloscope apparatus and method of processing waveform data using a streaming architecture. The apparatus has multiple processing objects (processors) that share a common cache memory in which the waveform data is stored during processing. Each processing object performs a sequential processing operation by retrieving a “chunk” or portion of the waveform from the memory, processes the chunk of data, and re-stores the processed data into the same location in the cache memory. This process is generally repeated until the entire waveform has been sequentially processed. The apparatus operates using a “pull” design wherein the last processor requests the next chunk to be processed from the preceding processor. In this manner, the waveform data is essentially processed by pulling it through the sequence of processing objects. The multiple processing objects may be implemented as a sequence of software processing objects in a processing thread or as separate hardware processors.