LSI layout designing apparatus, computer-implemented method of designing LSI layout and computer readable storage medium
AssigneeFujitsu Limited
InventorKoji Abe
Life of this patent
Estimating the term…
Abstract
A LSI layout designing apparatus which is implemented by a computer and designs a layout of a LSI on a display screen includes a timing adjusting unit for carrying out a timing adjustment process with respect to logic circuit data of the LSI already subjected to a layout process, and a layout restoration unit for restoring an original layout of the LSI prior to the timing adjustment process and reflecting a change of cells caused by the timing adjustment process on the original layout which is displayed on the display screen.
Claims15
A LSI layout designing apparatus implemented by a computer and designing a layout of a LSI on a display screen, comprising:
- timing adjusting means for carrying out a timing adjustment process with respect to logic circuit data of the LSI already subjected to a layout process;
- and
- layout restoration means for restoring an original layout of the LSI prior to the timing adjustment process and reflecting a change of cells caused by the timing adjustment process on the original layout which is displayed on the display screen.
A computer-implemented method of designing a LSI layout on a display screen, comprising the steps of:
- (a) carrying out a timing adjustment process with respect to logic circuit data of the LSI already subjected to a layout process;
- and
- (b) restoring an original layout of the LSI prior to the timing adjustment process and reflecting a change of cells caused by the timing adjustment process on the original layout which is displayed on the display screen.
A computer readable storage medium which stores a program for causing a computer to design a LSI layout on a display screen, comprising:
- timing adjusting-means for causing the computer to carry out a timing adjustment process with respect to logic circuit data of the LSI already subjected to a layout process;
- and
- layout restoration means for causing the computer to restore an original layout of the LSI prior to the timing adjustment process and reflect a change of cells caused by the timing adjustment process on the original layout which is displayed on the display screen.
Dependencies are inferred from the claim text.