博通BCM70010高清视频译码方案

博通(Broadcom)公司的BCM70010是高清视频/音频译码器,为下一代标准和高清晰H.264, VC-1和MPEG-2提供了视频压缩算法,是完全高清的实时译码,支持高达1920X1080的QCIF,适用于PC和x86嵌入式应用,包括Blu-ray™ 和HD DVD盘,无风扇嵌入式机顶盒(STB)播放器,IPTV或其它广播应用.本文介绍了BCM70010的主要特性, 方框图和系统应用方框图.

HIGH-DEFINITION ADVANCED VIDEO/AUDIO DECODER
The BCM70010 introduces the advantages of next-generation standard and high-definition H.264, VC-1, and MPEG-2 video compression algorithms to PCs and x86 based embedded applications. Some applications include the playback of Blu-ray™ and HD DVD disks, fanless embedded set-top HD playback, and IPTV or other broadcast
applications.

The BCM70010 is a single-stream HD AVC/VC-1/MPEG-2 decoder chip capable of full HD real-time decoding. The high performance and low power consumption of the BCM70010 enable reduced CPU utilization and support for mobile and fan-less platform designs.

The BCM70010 supports any compliant resolution from QCIF up to 1920 × 1080.

The BCM70010 can be used in on-board system designs or module form factors such as a mini-PCI module.

H.264
Complies with the ISO/IEC 14496-10 specification
Support for AVC high profile streams up to level 4.1 with a 40 Mbps maximum encoded bit-rate restriction
CABAC and CAVLC entropy decoding
Macroblock adaptive field/frame decoding
VC-1
Complies with the SMPTE 421M-2006 specification
Supports advanced profile level three with a 40 Mbps maximum encoded bit-rate restriction.
Supports simple and main profile decoding
MPEG-2
Complies with the ISO/IEC 13818-2 specification
Supports the main profile up to high level at 81 Mbps
Multistandard Audio Decoding
AC3; AAC; Mpeg-1 Layer I, II, and III (MP3); WMA; WMA Pro; DD+; DTS; and others.

Strong Media Security
The BCM70010 incorporates a security processor that allows host player software to send encrypted video elementary streams or A/V transport streams to be decrypted and decoded via the BCM70010.
Coupled with the optional companion chip (BCM70012) additional security features like digital signature based firmware verification, HW based bus encryption, as well as unique hardware keys can be enabled.

This allows the BCM70010 module to securely authenticate with the playback software and maintain integrity of premium media content.

主要特性:
Multi-standard HD/ED/SD video decoder
up to H.264/AVC HP at L4.1 1080i, 40 Mbps
up to SMPTE VC-1 AP at L3 1080i, 40 Mbps
VC-1 Simple and Main Profile (WMV9)
MPEG-2 MP @ ML
MPEG-2 MP @ HL
Multi-Standard HD Audio Decoder
MP2, MP3, AAC-HE, AAC-LC, DD, DD+, MLP, WMA, WMApro, DTS, DTS-HD support available
Uncompressed Video Output
YUV 4:2:0/4:2:2 (UYVY)
NV12/YUY2 YCbCr Format Support
BT.656/BT.1120 - compliant YCbCr 4:2:2 output
QCIF to 1080p support
Integrated 16-phase, 5-tap filter for both horizontal and vertical upscaling and downscaling
Strong Media Security
DES/3DES/AES encryption and decryption engine
Optional support for Digital signature verification for firmware
Low-power HD decode
Designed for notebooks and fan-less designs

应用:
Fan-less embedded set-top HD playback
HD DVD and Blu-ray playback on PCs
Protected media playback on PCs
Embedded x86 based IPTV or other broadcast/streaming applications



图1.BCM70010方框图



图2.BCM70010系统应用方框图




图3.BCM70010和BCM70012芯片组架构