Patent ID: 6137770
Filing Date: 2000-10-24
Classification: G10L,G11B

Abstract:
A disc cartridge for use with a miniature disc shaped recording medium, the disc shaped recording medium having a diameter of 64 mm, comprising:a cartridge main body for accommodating the disc shaped recording medium, the cartridge main body defining a plurality of positioning pin engagement holes on a major surface thereof; anda discriminating section formed in the cartridge main body for discriminating the type of disc shaped recording medium accommodated within the cartridge main body, wherein the discriminating section is a recess which is formed in a lateral side of the cartridge main body adjacent one of said positioning pin engagement holes, the lateral side of the cartridge main body being different from, and perpendicular to, the major surface of the cartridge main body, a height of the recess designating the type of disc shaped recording medium accommodated within the cartridge main body, the height of the recess being detectible by external detecting means to control a position of an external magnetic field generating means of a disc recording and reproducing apparatus as a function of the detected height of the recess when the cartridge main body is loaded into the disc recording and reproducing apparatus.