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A/V encoder reduces BoM costs, speeds up time-to-market

Posted: 24 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:conexant systems? mpeg-2? audio/video encoder? a/v encoder?

Conexant Systems Inc. launched a new MPEG-2 audio/video (A/V) encoder for consumer electronic products including media centers and entertainment personal computers, STBs, digital television sets and video recording/editing products such as DVDs and personal video recorders.

According to the press release, the product's high level of integration allows manufacturers to reduce BoM costs and component counts. Additionally, it said, the ability to use a single chip for multiple product platforms, regardless of geography, reduces overall development costs.

"Our new A/V encoder builds on our existing platform and delivers improved audio and video performance for a broad range of products commonly found in today's digital home," said Jeff Crosby, VP of Broadband Media Processing Products for Conexant. "This allows our customers to simplify product design and speed time-to-market."

The CX23418 accepts analog and digital video and audio in a variety of formats and encodes the input using MPEG algorithms to reduce the overall size and bandwidth of the A/V signals. This process allows users to store high-quality video and audio on computers and other digital consumer electronics devices, said Conexant.

Features include the ability to cleanly process and convert low-quality video from old VCR tapes and similar sources to digital formats such as DVDs, and support for all major worldwide broadcast video standards including NTSC, PAL and SECAM, and their associated stereo audio broadcast standards.

The new product interfaces directly to analog video signals, sound intermediate frequency/audio frequency (IF/AF) signals from television tuners, and audio ADCs, to produce high-quality video and audio MPEG program or transport streams. High-performance video quality is further supported by the integration of 10bit video ADCs supporting composite, S-video and component formats, 2-D and 3-D adaptive comb filtering, and time-base correction.

Other features include an increased motion search range, the decoupling of motion estimation from encoding, an adaptive quantization scheme, and the preservation of six-bit audio samples throughout the audio path to deliver high-fidelity compressed stereo audio.

In addition, the CX23418 includes a broadcast audio decoder that provides automatic standard detection and configuration through an on-board microprocessor. The company said this eliminates the need for user intervention, and is especially useful in geographic areas where different audio standards may be received on a channel-by-channel basis. The chip also supports AES, triple-DES and CPRM encryption technologies to protect content stored on either a hard disk or DVD recordable disk.

The CX23418 is packaged in a 23mm, 388-BGA and is priced at $20 each in quantities of 10,000. Samples of the device are already available, with volume production scheduled on Q1 2005.

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