Pre-Grant Publication Number: 20070135944
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Prior Art Detail
Summary / Description
| Summary / Description | An example of prior art GUI-driven CAD system for IC logic design |
Basic Information
| Type of Prior Art | Issued Patents - US |
| Country | United States of America |
| Patent/Application # | US Patent No. 5,801,958 |
| Kind Code | United States (US) - United STATES Patent - A |
| Patentee Name | LSI Logic |
| Relevant Pages, Columns, or Lines | Abstract; schematic editor &am |
| URL | |
| Filing Date | September 1, 1998 |
| Additional Information | |
Notes / To Do
| Notes | |
Excerpt
Excerpt Abstract: A technique for hierarchical display of control and dataflow graphs allowing a user to view hierarchically filtered control and dataflow information related to a design. The technique employs information inherent in the design description and information derived from design synthesis to identify modules of the design and design hierarchy. The user can specify a level of detail to be displayed for any design element or group of design elements. Any CDFG (control and dataflow graph) object can be annotated with a visual attribute or with text to indicate information about the design elements represented by the object. For example, block size, interior color, border color, line thickness, line style, etc., can be used to convey quantitative or qualitative information about a CDFG object. Examples of information which can be used to annotate objects include power dissipation, propagation delay, the number of HDL statement represented, circuit area, number of logic gates, etc... |
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Claims
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Conventional prior art CAD systems like the '598 patent typically had graphical schematic editors that accept user input describing/specifying a logic system and interactively generating a schematic display of that system. Individual components/gates having one more variable (boolean) inputs could be selected and grouped (e.g. hierarchically) and associated with various attributes including name. See e.g. citations above.
Conventional prior art CAD systems like the '598 patent typically had graphical schematic editors that accept user input describing/specifying a logic system and interactively generating a schematic display of that system. Individual components/gates having one more variable (boolean) inputs could be selected and grouped (e.g. hierarchically) and associated with various attributes including name. See e.g. citations above.
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user input GUI data is a kind of "manual" data. Also typically "historic" (e.g. from previous designs/libraries ), "derived", "calculated",
user input GUI data is a kind of "manual" data. Also typically "historic" (e.g. from previous designs/libraries ), "derived", "calculated",
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display name and other visual attributes are described (see abstract, otehr excerpts referenced above) and are stock elements in CAD systems
display name and other visual attributes are described (see abstract, otehr excerpts referenced above) and are stock elements in CAD systems
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see background section, and see columns 30-31
see background section, and see columns 30-31
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prior art is both continuous and real-time (interactive)
prior art is both continuous and real-time (interactive)
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