PATENT CLAIM ANALYSIS

Application Number: 15915172
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["716", "135000"]

Abstract:
A method for redistributing cell densities in layout of IC is provided. Initial cell density distribution and routing density distribution are obtained in an initial placement of the IC. White space is inserted into the initial placement according to a specific density value, so as to flatten the initial cell density distribution to the specific density value and obtain a flat cell density distribution. The specific density value is larger than a maximum cell density value within the initial cell density distribution. Cell densities of a first region are increased in the IC according to the routing density distribution and the flat cell density distribution, so as to obtain a modified cell density distribution. The modified cell density distribution is smoothed to obtain a calibrated cell density distribution. The white space is removed from the calibrated cell density distribution to obtain a final placement.

Claim (Index 9):
A non-transitory computer-readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method for redistributing cell densities in a layout area of an integrated circuit (IC), the method comprising:\n obtaining an initial cell density distribution in an initial placement of the IC; flattening cell densities of the initial placement according to the initial cell density distribution; identifying at least one first region in the IC according to the initial placement with the flattened cell densities, wherein the first region has a high routing density; expanding a plurality of first cells in the first region, so as to increase cell sizes of the first cells; shrinking a plurality of second cells outside the first region, so as to decrease cell sizes of the second cells; redistributing the cell densities of the initial placement according to the expanded first cells and the shrunken second cells, so as to obtain a calibration placement; recovering the cell sizes of the first and second cells in the calibration placement, to obtain a final placement; and implementing the IC according to the final placement.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 90.0
- Lexical Diversity: 2.78182
- Patent Class: 716.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14932165', '14743099', '14741771', '15867022', '12420156']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2935202578522173
- 35 USC 102 Novelty (BERT): 0.5329460996927761
- Combined Prediction Score: 0.3174628420362732
- Mean Citation Score: 234.333798
- Max Citation Score: 395.89474
- Similarity Product: 352.56883420589446

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test