Patent ID: 6016959
Filing Date: 2000-01-25
Classification: G06K,G11B

Abstract:
A card drive apparatus for accessing recording tracks on a card, comprising:a head assembly having at least one access head for accessing a plurality of sets recording tracks on the card, wherein each set of the plurality of sets of recording tracks includes two arc tracks located at different places on one circumference on the card, wherein the recording tracks have equal diameters and wherein centers of circumferences of the sets of recording tracks are located at different positions along a common linear axis, a turntable for mounting the at least one access head, and a shaft for rotating the turntable there around so that said at least one access head passes around a circumference to access a set of two recording tracks during rotation of said turntable;a carriage for steadily holding the card therein and providing an access opening for accessing the card there through; anda carriage positioning mechanism for positioning the carriage against the head assembly through the access opening at one of a plurality of positions that respectively correspond to the plurality of sets of two recording tracks, so that the access head accesses a selected set of the plurality of sets of two recording tracks on the card.