Patent ID: 7359297

Claim:
A method of producing a recording medium containing an information signal, comprising: applying a radiation beam, in response to an information signal, to a first area of an information layer of a recording medium to cause the first area of the information layer to assume a first state thereby forming a mark, and applying the radiation beam to a second area of the information layer, before and after the mark, while pulsing the beam to cause the second area of the information layer to assume a second state that is different that the first state, the pulses including erase pulses having a erase power level (P e ) and a bias power level (P b ) between the erase pulses, the bias power level (P b ) being in a range between zero and the erase power level (P e ), wherein: the bias power level (P b ) increases in the range between zero and the erase power level (P e ) as the recording speed (V) increases when the recording speed is below a chosen recording speed, and the bias power level (P b ) is substantially identical to the erase power level (P e ) when the recording speed exceeds the chosen recording speed ( 29 ).