Jacobs Pineda, Inc. specializes in VLSI designs for high volume, cost sensitive, consumer audio applications requiring AC-3, MPEG, DVD, DAC, PLL and 3-D functions. Our flagship product is the J1 Dolby Digital®/AC-3/MPEG Audio Decoding Core Cell, which is the world's smallest, with a silicon area of only 1.0 sq.mm(0.18u CMOS). Our mission is to give our licensees a definitive advantage over their competition by providing them with the industry's most cost-effective audio VLSI designs. Our designs are currently licensed and employed by Fortune 500 semiconductor and system manufacturers of audio products for the consumer and computing markets.
The J1 is a core cell design of an application specific signal processor which performs both Dolby Digital/AC-3 and MPEG audio decompression in a single design. The J1 is capable of decoding all AC-3 bitstreams with full support for bitstreams encoded with 5.1 channels and data rates of up to 640kb/s. The J1 downmixing capability produces stereo output in either normal or Pro-Logic compatible modes, making it ideal for DVD and set-top applications.
The J5 is a core cell design of an application specific signal processor which performs both Trusurround(TM) and SRS® 3-D audio virtualization processing in a single design. The 3-D processing allows users to enjoy benefits of a multi-channel sound source with only two reporduction channels. For Dolby Digital® (AC-3) sources, the J5 accepts full 6-channel PCM inputs and performs the 3-D processing to produce output Left/Right signals. Similarly, for decoded ProLogic(TM) sources, the J5 accepts a 4-channel PCM input (L,C,R,S) and produces the same stereo output.
The JDA1 is a digital-to-analog converter core cell suitable for all high quality audio and multimedia applications. The JDA1 accepts 24-bit PCM input at one of four selectable standard audio sample rates to produces stereo analog outputs. The JDA1 internally generates the audio sample clocks from a single 27MHz clock input, which would typically be derived from the 27MHz video/STC frequency available in MPEG based systems.