Bookmarks for a digital oscillographic instrument
First Claim
1. A method of displaying a portion of a waveform having digital values stored in a memory as an ordered sequence of values, the method comprising the steps of:
- (a) selecting a waveform portion of interest by specifying the value of at least one parameter that affects which digital values are used to create the display;
(b) associating a label with the at least one parameter;
(c) storing in a memory the association of the label with the at least one parameter;
(d) subsequent to steps (a)-(c), choosing a label that has been associated in step (b) and whose association was stored in step (c); and
(e) subsequent to step (d), displaying the waveform portion selected in step (a) and associated with the label chosen in step (b) by invoking the value of the at least one parameter associated with the label chosen in step (d).
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Abstract
A digital oscilloscope assists in the process of identifying, cataloging and restoring views of interest within a stored trace acquisition by implementing the notion of bookmarks. In response to a command to establish a bookmark, the scope takes note of selected display control parameters, such as the location of the view in the overall acquired trace and horizontal time per division, and stores that as a named bookmark. The scope accepts from the operator a comment associated with each bookmark. Another command lists defined bookmarks and causes the scope to re-institute the view and parameters associated with a specified bookmark. There is a mechanism for editing the descriptors or parameters that are defined by a bookmark.
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Citations
24 Claims
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1. A method of displaying a portion of a waveform having digital values stored in a memory as an ordered sequence of values, the method comprising the steps of:
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(a) selecting a waveform portion of interest by specifying the value of at least one parameter that affects which digital values are used to create the display;
(b) associating a label with the at least one parameter;
(c) storing in a memory the association of the label with the at least one parameter;
(d) subsequent to steps (a)-(c), choosing a label that has been associated in step (b) and whose association was stored in step (c); and
(e) subsequent to step (d), displaying the waveform portion selected in step (a) and associated with the label chosen in step (b) by invoking the value of the at least one parameter associated with the label chosen in step (d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A waveform display apparatus comprising:
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a memory containing ordered digital values representing the sequential values of a work signal of interest;
a user interface;
a display coupled to the user interface and to the memory, the display creating in response to viewing commands entered via the user interface visible images of different selected subsets of the ordered digital values; and
a bookmark controller coupled to the user interface and to the display, the bookmark controller responsive to a command, entered via the user interface, to create a bookmark by recording in a bookmark table collections of selected parameters describing the viewing commands respectively associated with the visible images, and the bookmark controller, in response to a command entered via the user interface to visit a bookmark, causing the display to invoke the parameters of a selected collection and produce the visible image of the associated bookmark on the display. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification