Bookmarks for a digital oscillographic instrument
First Claim
1. A method of identifying and recalling into an oscillographic display an arbitrary and operator selected portion of a waveform having digital values stored in a memory as an ordered sequence of values, the method comprising the steps of:
- (a) operator selection of an arbitrary waveform portion of interest by specifying a collection of parameters including values for horizontal position and horizontal scaling that determine which digital values are used to create waveform images in the display, the arbitrary waveform portion selected by the operator being less than the entire waveform;
(b) associating an ordinal label with the collection of horizontal position and horizontal scaling parameters specified in step (a);
(c) storing in a memory the association of the ordinal label of step (b) with the collection of horizontal position and horizontal scaling parameters specified in step (a);
(d) subsequent to step (c), displaying a waveform image different from the arbitrary waveform portion of interest specified in step (a);
(e) subsequent to steps (a)–
(d), operator selection of an ordinal label from a menu showing at least one ordinal label that has been associated in step (b) and whose association was stored in step (c); and
(f) in response to step (e), displaying the operator selected and arbitrary waveform portion specified by the collection of horizontal position and horizontal scaling parameters in step (a) and associated with the ordinal label of step (b) by re-invoking the values of the horizontal position and horizontal scaling parameters in the collection associated with the ordinal label chosen from the menu in step (e).
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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
22 Claims
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1. A method of identifying and recalling into an oscillographic display an arbitrary and operator selected 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) operator selection of an arbitrary waveform portion of interest by specifying a collection of parameters including values for horizontal position and horizontal scaling that determine which digital values are used to create waveform images in the display, the arbitrary waveform portion selected by the operator being less than the entire waveform; (b) associating an ordinal label with the collection of horizontal position and horizontal scaling parameters specified in step (a); (c) storing in a memory the association of the ordinal label of step (b) with the collection of horizontal position and horizontal scaling parameters specified in step (a); (d) subsequent to step (c), displaying a waveform image different from the arbitrary waveform portion of interest specified in step (a); (e) subsequent to steps (a)–
(d), operator selection of an ordinal label from a menu showing at least one ordinal label that has been associated in step (b) and whose association was stored in step (c); and(f) in response to step (e), displaying the operator selected and arbitrary waveform portion specified by the collection of horizontal position and horizontal scaling parameters in step (a) and associated with the ordinal label of step (b) by re-invoking the values of the horizontal position and horizontal scaling parameters in the collection associated with the ordinal label chosen from the menu in step (e). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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 coupled to the memory and implementing commands from an operator of the apparatus and that determine what portion of the work signal'"'"'s waveform is to be displayed; a display coupled to the user interface and to the memory, the display creating in response to horizontal position and horizontal scaling parameters entered via the user interface, visible images of different arbitrarily and operator selected proper subsets of the ordered digital values; 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;
(a) create a bookmark by recording in a bookmark table collections of the horizontal position and horizontal scaling parameters, those collections being respectively associated with the visible images of the different arbitrarily and operator selected proper subsets, and (b) associate a unique ordinal label with each created bookmark; andthe bookmark controller, in response to a command that references an ordinal label for a bookmark, that is entered via the user interface and that is a command to visit that referenced bookmark, causing the display to;
(a) re-invoke the horizontal position and horizontal scaling parameters of the collection associated with the referenced bookmark to be visited, and (b) produce on the display the corresponding visible image of the arbitrarily and operator selected subset for that associated visited bookmark. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification