Fifty years of the data compression task (1948-1998) and solving one of its problems

Brief review of statement modifications, exploring and solving problems of data compression for the period of 50 years since 1948, is carried out. On the basis of uniqueness property of a definition "amount of information about continuous signal format" existence and form of bottom boundary of the continuous signal possible compressed images ensemble within restricted time interval with accuracy less than required, are substantiated. The review illustrates that the noted substantiation is represented first, and it is one of the problems solution.