Patent ID: 6084737
Filing Date: 2000-07-04
Classification: G11B

Abstract:
A magnetic playback system for playing back pre-recorded signals from a magnetic tape, said signals being digital signals recorded, at a first speed and a first data rate, in adjacent slant tracks on said tape alternating between first and second azimuth angles, said tape also having a control signal recorded thereon, said system comprising:a rotatable member arranged adjacent said magnetic tape, said member having first and second magnetic playback heads fixedly mounted thereon, said first head being mounted at said first azimuth angle and said second head being mounted at said second azimuth angle with respect to said tape;means for rotating said rotatable member to generate, respectively, a first and a second playback signal at a playback speed faster than said first speed from said first and second playback heads, as said tape is moved past said playback heads;means responsive to said control signal recorded on said tape for generating speed information voltage for making the data rate of a selected one of said first and second playback signals equal to said first data rate;control means for controlling the speed of rotation of said rotatable member in response to said speed information voltage; andwherein said speed information voltage generating means selects said first or second playback signal based on the direction of travel of said tape as determined by said control signal.