1
John R Waterworth: Data compression system. Ferranti, Kerkam Stowell Kondracki & Clarke, October 20, 1987: US04701745 (195 worldwide citation)

A data compression system includes an input store (1) for receiving and storing a plurality of bytes of data from an outside source. Data processing means for processing successive bytes of data from the input store includes circuit means (21-25) operable to check whether a sequence of bytes is iden ...


2
John R Waterworth: Digital data storage apparatus. Ferranti, Kerkam Stowell Kondracki & Clarke, January 20, 1987: US04638454 (2 worldwide citation)

Digital data storage apparatus includes a data store DS having a plurality of multiple-bit word locations, and validity store VS having a lesser plurality of multiple-bit word locations arranged such that each separate bit corresponds to a separate word location in the data store. A first auxiliary ...