International Business Machines Corporation

U.S. Philips Corporation

Koninklijke Philips Electronics N.v.

Paulus G Weijenbergh

Jakob G Nijboer

Glen Alan Jaquette

Karl Arnold Belser

John Edward Kulakowski

Rodney Jerome Means

Jakob Gerrit Nijboer

Pope Ijtsma

Johannes H Spruit

Johannus Leopoldus Bakx

Judson A McDowell

Robert A Brondijk

A record carrier having essentially circular tracks concentrically located around a point of rotation. The record carrier is divided into circular zones each having m tracks, where m is an integer. Each track within a zone is subdivided into n sectors, where n is an integer which is constant per zone and which increases as the zone is more remote from the point of rotation. Each sector including a header portion and a data portion. The header portions in the radial direction in each zone are in line. In each zone the condition of m*n=j*k is satisfied, where is j an integer greater than or equal to 2 and is constant for each zone, and k is an integer.

Zoned record carrier

Growing community of inventors

Eindhoven, Netherlands

Paulus G Weijenbergh