Koninklijke Philips Corporation N.v.

Wilhelmus Robert Koppers

Pierre Hermanus Woerlee

Hubert Cecile Francois Martens

Ruud Vlutters

Ronald Joseph Antonius Van Den Oetelaar

Johannes Leopoldus Bakx

Hubert Cécile François Martens

Bin Yin

Johannus Leopoldus Bakx

Ronald Reindert Drenten

Mark Van Schijndel

Ronald Van Den Oetelaar

Pierre Hermanus

Robert Alberta Arnoldus Ponsen

The present invention relates to a recording apparatus, record carrier and method of recording data on at least two layers of a recording medium by using a radiation power, wherein individual recording speeds are determined for respective ones of the at least two layers at different values of the radiation power. A recording speed to be used for recording on an individual one of the at least two recording layers is selected based on a maximum radiation power specified for the recording operation, and the speed of the recording operation is controlled individually for each of the at least two layers based on the selected recording speed. The determination of the individual recording speeds at different radiation power values may be written or embossed on the record carrier. Furthermore, a recording sequence used for recording on the recording layers can be set based on the sensitivities and thus recording speeds. Thereby, total recording time can be minimized for multi-layer recording media.

Multi-speed recording for multi-layer disc

Recordable DVD+R and DVD+R/W optical discs with two (or more) information layers are developed to double the data storage capacity and video recording time. A method and device are proposed to make dual layer DVD disc recordings compliant with the dual layer DVD-ROM standard Recording the data in a DVD-ROM compliant way on the dual layer DVD+R or DVD+R/W disc is obtained by shifting the middle zone area towards the inner radius of a disc in such a way that the data zones of both layers are filled up with data.

Method of recording information on a multilayer record carrier, and device for recording on a dual layer record carrier

Method of recording information on a multi layer record carrier, and device for recording on a dual layer record carrier

This invention relates to a method for recording information on a multi layer record carrier. The information is recorded on the record carrier according to special filling patterns, such that the record carrier is compatible with the DVD-ROM standard while the time required for closing a session and/or finalizing the disc is reduced. The information is substantially evenly distributed over the layers in blocks of a predefined amount of storage space. The size of these blocks may be flexible and set by the method or read from the record carrier.

Method for recording information on a multi layer record carrier, and record carrier for use by such method

A rewritable optical record carrier comprising a first substrate carrying a first recording stack of layers, which recording stack comprises, a first dielectric layer, a recording layer comprising a phase-change recording material, a second dielectric layer, and a metal mirror layer. In order to achieve a maximum R*M said first dielectric layer has a thickness din the range of 20 nm to 50 nm, and said second dielectric layer has a thickness daccording to the relation 0.0225*d&#x2212;2.6572*d+173.3 (nm)&#x3c;d&#x3c;0.0225*d&#x2212;2.6572*d+213.3 (nm) when the mirror layer comprises aluminum, or a thickness daccording to the relationship 0.0191*d&#x2212;2.0482*d+149.6 (nm)&#x3c;d&#x3c;0.0191*d&#x2212;2.0482*d+189.6 (nm) when the mirror layer comprises silver.

Rewritable optical record carrier

A writable optical record carrier comprising a plurality of recording layers L0, . . . , Ln&#x2212;1 separated by a spacer material, each recording layer comprising an optimum power calibration area having a first portion with an average reflection value representative of a recorded layer and a second portion with an average reflection value representative of an unrecorded layer, a method, and an apparatus for forming optimum power calibration areas on such a writable optical record carrier are presented. The optimum power calibration areas partially overlap such that the optimum power calibration areas of each pair of consecutive recording layers form a step, and the first portions of said plurality of recording layers have the form of a staircase. Each step formed by a pair of consecutive recording layers k, k+1 has a preferred minimum step size.

Multi-layer writable optical record carrier with an optimum power calibration area, and method and apparatus for forming optimum power calibration areas on such a record carrier

A multi-stack optical data storage medium () for rewritable recording using a focused radiation beam (), entering through an entrance face () is described. The medium () has a substrate () and an Lrecording stack () and an Lrecording stack () both comprising a phase-change type Land Lrecording layer and the recording stacks are separated by a transparent spacer layer (). The Lrecording stack () is present at a position closest to the entrance face () and has an optical transmission of TLand TLwhen the phase-change layer respectively is in the amorphous phase and in the crystalline phase. The medium () contains pre-recorded information modulated in at least one of: an embossed pregroove () in the substrate (), embossed pits in the substrate and recorded phase-change marks in at least one of the recording layers Land L(). The pre-recorded information contains a flag whether formatting of the Lrecording layer of the Lrecording stack () is needed depending on the transmission values TLand TLof the Lrecording stack (). In this way it is achieved that the medium () has a good playability, recordability and random access behavior even when the Lrecording layer () has been partially recorded with information.

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Eindhoven, Netherlands

Wilhelmus Robert Koppers