DESIGNING APPARATUS AND DESIGNING METHOD
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United States of America Patent
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Issued Date -
Dec 3, 2015
app pub date -
May 26, 2015
filing date -
May 27, 2014
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Abstract
A designing apparatus generates a logic cone and calculates an area ratio between a first triangle and a second triangle. The first triangle has a logic cell as an angle in an m-th stage between input and output stages and input-side FFs as the other angles at both ends of the input stage, the FFs connected to input of the cell. The second triangle has an output-side FF as an angle in the output stage and logic cells as the other angles at both ends of the m-th stage, the cells connected to input of the FF in the output stage. The apparatus sets, when the ratio matches a predetermined ratio, a first logic cone block between the input and m-th stages and a second logic cone block between the output and m-th stages as logic synthesis units and performs logic synthesis by using the logic synthesis units.
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