It would be great to receive high-quality video on a mobile phone, and now
Hewlett-Packard has a way of beating the interference that can wreck digitally
compressed pictures (WO 01/22735). HP uses standard MPEG digital video
compression. This sends a few full picture frames, along with many predicted
frames that only show how the picture is changing. But HP doesn’t send them all
on one radio channel. Instead, it uses two channels to carry alternate full or
predicted frames, recombining them in the cellphone. As interference usually
affects one channel at a time, the phone is more likely to…
Technology
Mobile movies
By Barry Fox
30 June 2001
