PDF《INTEGRATED CIRCUITS》

2 or AC-3 audio streams, multiplexed into a single program or transport stream for simple connection to various storage media or broadcast media. Hence, making design effort for our customers a minimum, as well as removing the need for in-depth experience in MPEG encoding. ? Low system host resources. All video and audio encoding algorithms and software are run on an internal MIPS?(1) processor. The SAA6752HS only requires a small amount of communication from the system host processor to set up and control required encoding parameters via the I2C-bus. (1) MIPS is a registered trademark of MIPS Technologies.

2004 Jan

26 5 Philips Semiconductors Product speci?cation MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer SAA6752HS 2.2 Application ?elds 2.2.1 DVD BASED OPTICAL DISC RECORDERS (DVD+RW, DVD-RW, DVD-RAM) Emerging optical disc based recording systems target to replace the existing consumer recording (VCR) and playback (DVD and VCD) products. The first generation recordable DVD based products will want to maximise recording times for the 4.7 Gbyte storage capacity. For these systems the SAA6752HS is critical, with its superior noise filtering and motion estimation, in enabling high quality at low bit rates. Playback compatibility with existing DVD decoding solutions will also be important, which is why the SAA6752HS provides Dolby? digital consumer (AC-3) audio encoding to allow playback through existing players implementing DDCE (AC-3) decoding dominant in current DVD platforms. The DVD stream is based on MPEG Program Stream (PS). The SAA6752HS directly outputs MPEG PS compliant to the DVD standard. 2.2.2 HDD BASED TIME SHIFT RECORDING Hard Disc Drive (HDD) based time-shift systems enable Personalized TV (PTV) functionality, providing consumers with new powers of control over what and when to watch broadcast content. With the audio and video content recorded digitally, identification, search and retrieval becomes a '

no brainer'

task as compared to traditional VCR functionality. Combine this with electronic program guides and intelligent control, and the PTV can also analyse the viewers w........