A system and apparatus for helically scanning a magnetic tape having slant tracks wherein the slant tracks are divided into a plurality of segments. A helical scan drum has at least first and second rotary head pairs. The first head pair scans at least one of the segments of a first track while the second...http://www.google.fr/patents/US4758911?utm_source=gb-gplus-shareBrevet US4758911 - Audio signal recording and/or reproducing apparatus
Audio signal recording and/or reproducing apparatus
