Qpixel QL202B H.264编译码方案
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Qpixel 公司的QL202B是低功耗单片实时半双工H.264/AVC编译码器,集成了ARM处理器和10/100以太网MAC,具有系统复接/分路特性以及在屏幕上显示(OSD)视频特性. QL202B能和任何的主处理器接口,也可单独工作.广泛应用网络视频流如DVR和PVR,时移播放设备,数码相机和摄像机,有线和无线IP摄像机和视频iPOD以及PC外设等.本文介绍了QL202B的主要特性和优势,方框图以及EVK-202B评估板的主要特性和应用方框图.
QL202B H.264 LOW POWER MAIN PROFILE CODEC SOC
The QL202B is a Real-Time Half-Duplex H.264/AVC Main Profile (Level 3) Encoder/Decoder (Codec) SoC with integrated ARM9 processor and 10/100 Ethernet MAC, ideally suited for networked video streaming applications.
The QL202B SoC leverages the QL200 family architecture, with the addition of the ARM9 microprocessor in master mode, allowing the QL202B to operate as a single chip solution without the need for an external microprocessor, reducing overall system cost. An integrated 10/100 Ethernet MAC enables the QL202B to cost effectively target networked
audio/video streaming applications, while continuing to support the low power, high video quality and storage/bandwidth efficiency enabled by its advanced H.264 algorithms.
The QL202B Evaluation Kit and Development Kit supply all the necessary firmware, application programming interfaces (APIs) and development tools required to reduce development resources needed to quickly bring networked audio/video streaming products to market. The QL202B supports industry standard Operating Systems, such as Linux, facilitating the porting of common user applications and software stacks. Customers can choose to use standard software or develop custom software to achieve
fast time-to-market needs with differentiated products.
The QL202B H.264 video encoder is compatible with the VLC (industry standard and open-source) video decoder version 0.8.6 or higher. The VLC video decoder can be downloaded from www.videolan.org.
With its integrated 10/100 Ethernet MAC, the QL202B in stand-alone (or master) mode offers a highly optimized, single chip IP Cast or IP video streaming solution for such applications as:
IP surveillance cameras for home security or remote monitoring
Place-shifting set top boxes for streaming video to a different LOCAIION
Home A/V digital media server
For optimum flexibility, the QL202B is capable of operating both in companion
(co-processor) mode, as well as stand-alone mode, allowing it to support a wide array of consumer, broadcast and professional applications for new and existing H.264/AVC-based designs. Like the QL200 family of products, the QL202B includes a Network Abstraction Layer, enabling the QL202B to handle live streams as well as file I/O using various standard transport methods.
The QL202B is a highly integrated, fully flexible SoC supporting industry standard interfaces & protocols, enabling cost-effective networked video products. With its high quality H.264 video compression, it ideally supports emerging video transmission applications that require high quality video with extremely efficient bit rate, for smooth real-time video streaming over the network.
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