Partial-selective encryption technology uses OASIS CBLOCK records to encrypt arbitrarily encapsulated sets of data records within an OASIS layout file. A partially encrypted OASIS data file can be read and re-written by any compliant OASIS reader and writer, without decryption, before any OASIS-enabled operation. All or portions of encrypted data are accessible by EDA tools with the decryption code. Any encountered encrypted data is read over gracefully except for syntax checking. The overhead to decrypt portions of a data file on the fly typically does not exceed 5% of total run time.
OASIS Layout Database Technology
The OASIS VLSI layout database technology offers OASIS computational facilities for various design operations running on top of the new database. The database is driven by some of the low-level primitives defined by the new SEMI OASIS format replacing the GDSII data structure, dropping the size of VLSI databases by an order of magnitude. OASIS databases accelerate the OASIS Stream In/Out flow by a similar order of magnitude.
"OASIS Tooling took advantage of an optional file-level property of OASIS data called Repetitions, an approach to building OASIS data structure that will dominate the future use of OASIS," said Tom Grebinski, president and CEO of OASIS Tooling. "A repetition-based OASIS implementation is more difficult to implement but, once done, has significant long-term performance and scaling advantages over other approaches offered by OASIS."
Using the richer palette of repetitions offered by OASIS accelerates many computational geometry design and mask programs by as much as 5-200X. Low-level OASIS primitives can be embedded by code in device architecture and hardware systems as well which accelerates the manipulation of data deeper into the tools using computational geometry. The new database gracefully handles trapezoid recognition as part of the data structure as well.
The database technology ports to open-source layout database technology as well as the more advanced legacy layout databases already working at 64-bit. The company offers the technology and the means to quickly migrate to the newer OASIS data structure from the legacy GDSII layout data structure.
OASIS and CELL Broadband Engine Architecture
Porting the OASIS Tooling OASIS C++/C API stack for the new CELL Broadband Engine anticipates the broad availability of this architecture and the release of the capabilities offered by the new OASIS format.
OASIS Tooling configures the CELL Broadband Engine to detect and digest OASIS constructs with few transformations and computations during geometrical processing. This will improve CELL hardware performance for applications using computational geometry, such as DRC, MRC, aerial imaging, CMP density fill, fracturing, 2-D rendering and model-based OPC by an order of magnitude over existing device architecture used for advanced computing, such as FPGAs and custom processors.
About OASIS Tooling
OASIS Tooling, Inc. is the leading provider of commercial OASIS verification and OASIS computational geometry infrastructure technology to the semiconductor industry. For more information, please visit the company's web-site, www.oasistooling.com.
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