We have developed a media processor core for MPEG4/H.26X codec LSI, which realizes a real-time bi-directional encoding/decoding for CIF-resolution video at the frame rate of 30 frls. The core processor contains 6.3 M-transistors on only 14mm2 silicon area and consumes 280mW at 1.8V. It features an MPEG-oriented hybrid architecture which incorporates a SIMD processor optimized for matrix-operation, a programmable VLC engine and a 2-dimentional multifunction DMA. Another features are a memory reduction approach by hardware assist and an operand isolation scheme, which realizes low cost and low power characteristics, respectively.
We have developed the world's first live video distribution platform capable of simultaneously delivering live video to multiple mobile phones, e.g. mobile videophone terminals and PDAs (Personal Digital Assistants), as a 3rd-generation (3G) mobile communications service. Although we are already providing a one-to-one moving picture delivery (videophone) service as a 3G mobile phone service, we did not yet have a one-to-many system of delivering live video to multiple terminals. The new platform delivers video to terminals using the bearer of a 3G-324M line provided with 3G mobile communications servics. The same content can be delivered simultaneously in a maximum of 500 streams to mobile phones with a video delay of approximately 7 seconds, a picture size of 176 x 144 pixels, and a frame rate of 10 fps. This paper also summarises the possibilities of using this platform to create business models that use a mobile videophone to provide a child care centre monitoring system, a home remote monitoring system, or other systems that were not possible with existing mobile phones.
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