Abstract: A method and apparatus for switching n data streams for input and output of the data streams by an n input, n output data store without data loss. The data store is divided into n separate storage arrays and each data stream is divided into n equal-sized pieces. Then, during each one of n separate time units, one data stream piece is written into a corresponding one of the storage arrays; or, one data stream piece is read from a corresponding one of the storage arrays. For each data stream, during each time unit i, where 1≦i≦n an ith data stream piece is written into an ith one of the storage arrays, or an ith piece is read from an ith storage array. During each jth time unit, where 1≦j≦n, one data stream piece Pij is written into an ith storage array, or one piece Pij is read from an ith storage array.

Abstract: This invention pertains to a novel wood fibre debris processor. More particularly, this invention relates to an apparatus which can simultaneously segregate or classify and debark in a singular process wood fibre debris which results from storage and handling of logs for primary forest resource manufacturing industries. A wood fibre debris processor comprising: (a) an enclosed frame; (b) at least one rotatable first type abrader roll disposed laterally across an interior of the frame; (c) at least one rotatable second type abrader roll disposed laterally and adjacent to the first type abrader roll across the interior of the frame; (d) at least one first wood fibre debris abrader means disposed on the first type abrader roll; and (e) at least one second wood fibre debris abrader means disposed on the second type abrader type roll.