A method and apparatus for generating an encoded data stream representing a number of pictures or frames and having a number of layers including a picture layer in which time code information attached to the original data is described or inserted therein for each picture. Such time code information may...http://www.google.com.au/patents/US6453112?utm_source=gb-gplus-sharePatent US6453112 - Encoded stream generating apparatus and method, data transmission system and method, and editing system and method