Patent ID: 6356517
Filing Date: 2002-03-12
Classification: G11B

Abstract:
An optical disc for use in a player or recorder, comprising:an annular data disc containing at least one data file; a transparent disc to enclose the data disc and having: a central hole defined in the transparent disc; and an annular clamping area defined between an inner edge of the data disc and a periphery defining the central hole; and an annular control chip securely attached concentrically to the clamping area and for containing at least some data area allocation (DAA) data, data area allocation (DAA) data recording the locations of the at least one data file on the data disc; wherein the annular control chip includes an outer ring, an inner ring which acts as a ground, and a die; wherein the outer ring is divided into a plural number of radial contact sections, one of the plural number of radial sections being connected to the inner ring; wherein one of the plural number of radial sections contains the die, the die being secured to the one of the plural number of radial contact sections and electrically connected with all of the plural number of radial contact sections; wherein the die is for having at least some of the data area allocation (DAA) data written therein; and wherein, in operation, the plural number of radial contact sections are contacted by a plurality of probes, equal in number to said plural number, disposed in a player or recorder, and the inner ring is also contacted by an additional probe in the player or recorder, whereby the player or recorder writes/reads at least some of the data area allocation (DAA) data to/from the die.