Lexra Announces Dolby Digital --AC-3-- Algorithms For LX5X80 RISC/DSP Core.Business Editors & High Tech Writers SAN JOSE, Calif.--(BUSINESS WIRE)--May 30, 2001 Lexra's Dolby-certified AC-3(TM) Algorithm Cuts Chip Count Combining RISC RISC in full Reduced Instruction Set Computing Computer architecture that uses a limited number of instructions. RISC became popular in microprocessors in the 1980s. and DSP (1) (Digital Signal Processor) A special-purpose CPU used for digital signal processing applications (see definition #2 below). It provides ultra-fast instruction sequences, such as shift and add, and multiply and add, which are commonly used in math-intensive Computing into One IP Core Today, audio capability is a must for anyone building a multi-media consumer electronics System-on-Chip (SoC). Dolby Laboratories of San Francisco is a company synonymous with high-quality audio algorithms. Lexra, Inc. today announces that it has completed certification for implementation of the Dolby(TM) Digital (AC-3) digital audio coding technology. The software implementation is optimized for SoC applications using the Lexra LX5x80 RISC/DSP core. "Dolby is a leader in audio processing," said Charlie Cheng, president and CEO (1) (Chief Executive Officer) The highest individual in command of an organization. Typically the president of the company, the CEO reports to the Chairman of the Board. of Lexra. "Combining a Dolby-certified AC-3 algorithm with Lexra's experience in producing highly portable, high-performance RISC-DSP embedded processor cores provides our customers with a solution that has both signal processing and general purpose computing in one core." Dolby Digital is currently the most popular digital film sound format, as well as the worldwide standard for both standard-definition (SDTV (Standard Definition TV) A set of digital television (DTV) standards with 480 lines of resolution. All SDTV formats are interlaced, and SDTV pictures are not as sharp as progressive scan EDTV or HDTV (Enhanced Definition or High Definition). SDTV Vs. ) and high-definition digital television (HDTV (High Definition TV) A set of digital television (DTV) standards that offer the highest resolution and sharpest picture. Although some HDTV sets are available in standard (rather square) screen sizes, the overwhelming majority of sets are wide screen, which eliminates ). Dolby Digital is also the audio standard for home theater atmospheres; DVD DVD: see digital versatile disc. DVD in full digital video disc or digital versatile disc Type of optical disc. The DVD represents the second generation of compact-disc (CD) technology. , digital cable and satellite systems for which the market is continuing to expand. "Lexra's Dolby Digital implementation leverages the Radiax instruction set to provide SoC customers with a single chip solution, and plenty of horse power left over for other processing, " explains Chris Hanna, Lexra's principal DSP Software engineer. "Designers will benefit from its features including a full six (5.1) channel decoder where most downmix modes are supported including Karaoke `aware' mode." Lexra's highest quality (Class A) implementation of the Dolby Digital decoder has a small memory footprint that allows internal single-cycle access IMEM IMEM Istituto dei Materiali per l'Elettronica ed il Magnetismo (Italian) (instruction memory) and DMEM DMEM Dulbecco's Modified Eagle's Medium (for cell culture growth) DMEM Design Manufacture and Engineering Management Department (data memory) to be used. On-chip memory significantly reduces overall CPU time requirements by eliminating external bus cycles for cache misses. The algorithm requires 22 Kbytes of instruction memory and 28 Kbytes of data memory. To ease the integration of the decoder with customer software, software interfaces are implemented via software APIs. Price & Availability The Dolby Digital algorithm will be available to existing Dolby Decoder implementation licensees for a one-time fee of $95,000. About Dolby Laboratories: Dolby Laboratories is the developer of signal processing systems used worldwide in applications that include motion picture sound, consumer entertainment products and media, broadcasting, and music recording. Based in San Francisco with European headquarters in England, the privately held company privately held company A firm whose shares are held within a relatively small circle of owners and are not traded publicly. also has offices in New York, Los Angeles, Shanghai, Beijing, and Tokyo. For more information about Dolby Laboratories or Dolby technologies, please visit http://www.dolby.com. About Lexra: Lexra, Inc. is a leading microprocessor developer specializing in 32-bit RISC and DSP cores for the embedded market. In less than four years, Lexra has established itself as an innovator in embedded microprocessor technology and intellectual property (IP) licensing business model, with proven track record for customer success. During this short period, Lexra has delivered seven processors to 30 licensees in six different countries. Among the customers are major network communication companies as well as top ten semiconductor companies. Lexra is headquartered in San Jose, CA. Further company information can be found at http://www.lexra.com. MIPS (Million Instructions Per Second) The execution speed of a computer. For example, .5 MIPS is 500,000 instructions per second; 100 MIPS is a hundred million instructions per second. , MIPS I, MIPS16, R3000, and other MIPS common law marks are trademarks and/or registered trademarks of MIPS Technologies, Inc. Lexra, Inc. is not associated with MIPS Technologies, Inc. in any way. Unaligned un·a·ligned adj. Nonaligned: unaligned nations. loads & stores are not supported in hardware or software. "Dolby" and "AC-3 are trademarks belonging to Dolby Laboratories, Inc. |
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