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Partial-response maximum-likelihood
Videos
In computer data storage, partial-response maximum-likelihood is a method for reading the digital data from the weak analog read-back signal picked up by the head of a magnetic disk drive or tape driv
Continuous-time partial-response (class 4) and corresponding 'eye pattern'
Continuous-time partial-response (class 4) and corresponding 'eye pattern'
Early PRML chronology (created around 1994)
Early PRML chronology (created around 1994)
Run-length limited
Videos
Run-length limited is a line coding technique that is used to send arbitrary data over a communications channel with bandwidth limits. RLL is used in both telecommunication and storage systems that mo
Partial-response maximum-likelihood
…Viterbi algorithm was performed with digital logic. In the tape application, PRML superseded 'flat equalization'. In the HDD application, PRML superseded RLL codes with 'peak detection'. The first implementation of PRML was shipped in 1984 in the Ampex Digital Cassette Recording System (DCRS). The chief…
Seagate ST11R, an 8-bit ISA RLL hard disk controller produced in 1990.
Seagate ST11R, an 8-bit ISA RLL hard disk controller produced in 1990.