SAA6750中文资料飞利浦数据手册PDF规格书

GENERAL DESCRIPTION

General

The SAA6750H is a new approach towards a stand-alone MPEG2 video encoder IC. It combines high quality SP@ML compliant real time encoding with cost-effectiveness, allowing for the first time the use of an MPEG2 encoder IC in applications and markets with a high cost pressure. This has been achieved by means of a number of innovations in architecture and algorithms developed by the Philips Research Laboratories, e.g.:

• The unique motion estimation algorithm supports highly efficient encoding by using only I frame and IP frame mode. B frames need not be used. This leads to a significantly smaller internal circuitry and also reduces DRAM memory requirements from at least 4 to 2 Mbyte. In addition, the absence of B frames simplifies editing of the compressed data stream.

• The patented, motion-compensated temporal noise filtering which was developed by Philips for professional equipment reduces noise in the input video before compression is performed. This technique gives visible improvements in picture quality, especially in the field of home recordings with noisy signal sources where this has proved to be of significant benefit.

Internally the SAA6750H uses a hardware solution for data compression and a specially developed high performance processor for control purposes.