NEC has first MPEG4 codec

Electronics Times, August 9, 1999

NEC has developed an MPEG4 coder/decoder (codec) for use in high quality audio and video data transmission over the Internet and in next generation mobile phones.

According to the company, the MPEG4 codec conforms to two international video data compressing standards, MPEG-4/Visual and H.263 ver2. The two standards aim to ensure no distortions are caused when data is encoded, while maintaining the picture quality through improved filtering.

For audio compression, the codec conforms to the G.723.1 standard for narrow and wide-band compression.

The codec can send data in periodic cycles and in the event of data errors occurring, they are replaced by correct data to ensure accurate reproduction.

It will enable standard quarter common intermediate format (QCIF) screen size reproduction in video phones at a rate of 10 to 15 frames per second with a power consumption of 94mW in a single chip DSP.