A method for dual-standard coding of very low data-rate images and a coder-decoder system for implementing the method, wherein images can be transmitted with low spatial "Quarter of Common Intermediate Format" (QCIF) resolution and with high time resolution according to a first standard, or with high...http://www.google.co.uk/patents/US5459515?utm_source=gb-gplus-sharePatent US5459515 - Method for dual-standard coding of very low data-rate images and coder-decoder for implementing this method
