NEC is building mobile MPEG-4 codec

Products equipped with codec will lbe able to display 10 to 15 frames per second of image data on a screen up to 176 pixels by 144 pixels, while consuming 94 milliwatts of power. The device therefore has half the power usage and double the compression performance of current technologies.

NEC's device transmits picture and sound data in periodic cycles, enabling data error correction while images are transmitted.