Altos Design Automation, Inc. was a provider of characterization technology for the creation of library views for timing, signal integrity, power analysis and optimization applications. Their tool Liberate was a cell library characterizer that supports models for statistical static timing analysis, such as liberty SI, effective current source models, and composite current sourc. A second tool Variety MX was a statistical timing model generator for embedded memories. The company also supports ultra low power and high speed design styles that include power gating cells, state retention registers, level shifters, pulse clocking, and CML.
