Patent ID: 7876516
Filing Date: 2011-01-25
Classification: G11B,H03M

Abstract:
1. A method for writing data to a multi-track data tape, comprising: receiving a stream of user data symbols, the stream comprising at least one data set; segmenting each data set into a plurality S of unencoded subdata sets, each subdata set comprising an array having K for each unencoded subdata set: from the S encoded subdata sets, forming a plurality of (S×N mapping each PCO onto a logical data track according to information within the header of the PCO; on each logical data track, merging adjacent PCOs to form codeword objects (COs), each comprising at least two adjacent PCOs; modulation encoding the COs and adding synchronization patterns to obtain T synchronized COs, where T is the number of concurrent active tracks on the data tape; and writing T synchronized COs simultaneously to the data tape.