Patent ID: 6052077
Filing Date: 2000-04-18
Classification: G11B,H03M

Abstract:
A device for binary-coding a read signal from a magnetic tape, comprising:a binary-coding section which outputs a value ""1"" when an analog read signal exceeds a predetermined threshold voltage, and outputs a value ""0"" when said analog read signal does not exceed the predetermined threshold voltage; anda threshold voltage setting section which increases or decreases the threshold voltage of said binary-coding section by a predetermined amount with respect to a reference voltage when a record density ID recorded in a head of the magnetic tape is incorrectly binary-coded by said binary-coding section;wherein said threshold voltage setting section increases the threshold voltage of said binary-coding section by the predetermined amount with respect to the reference voltage when the magnetic recording density ID binary-coded by said binary-coding section is incorrect because the number of bits of the value ""1"" is large, and decreases the threshold voltage of said binary-coding section by the predetermined amount with respect to the reference voltage when the magnetic recording density ID binary-coded by said binary-coding section is incorrect because the number of bits of the value ""0"" is large.