摘要:
A sputtering target for fabricating a recording layer of a phase-change type optical recording medium contains a compound or mixture including as constituent elements Ag, In, Te and Sb with the respective atomic percent (atom.%) of alpha , beta , gamma and delta thereof being in the relationship of 2
摘要:
The present invention is directed to an optical information recording medium on which parameters of a plurality of multipulse pattern each having a different applied liner velocity ranges and information regarding recordable liner velocities capable of recording with each of the multipulse patterns are pre-formatted as recording conditional information. The present invention is also directed to an optical information recording apparatus capable of reading pre-formatted information from the optical information recording medium, comparing the pre-formatted information and the specification of the apparatus and selecting an optimum recording condition from the result of comparing. The present invention further relates to a method for determining a recording condition using the optical information recording medium and/or the optical information recording apparatus, and an information processing apparatus disposing the optical information recording apparatus therein.
摘要:
A recordable optical information recording medium having an address t for each sector, comprises: an area A1 starting from an address t1 to which access is made only when a recording apparatus performs recording operation; an area A2 starting from an address t2 to which access is made either when the recording apparatus performs the recording operation or when the recording apparatus performs reproducing operation; and an area A3 starting from an address t3 to which access is made either when either the recording apparatus or a reproducing apparatus performs recording or when either the recording apparatus or the reproducing apparatus performs reproducing. The addresses t are set consecutively with respect to a physical arrangement of the sectors in each of the areas A2 and A3, and the area A1 has at least one inconsecutive part (2; 3; 4) at which the addresses t are not consecutive with respect to the physical arrangement of the sectors.
摘要:
An optical recording medium including a substrate (1), a bottom protective layer (2) located overlying the substrate (1), an optical recording layer (4) located overlying the bottom protective layer (2), a top protective layer (6) located overlying the optical recording layer (4), an intermediate layer (7) located overlying the top protective layer (6), comprising carbon and at least one element (M) selected from the group consisting of Ti, Nb and Ta, an optical reflective layer (8) comprising Ag in an amount not less than 95 atomic %, located overlying the intermediate layer (7). The optical recording medium is recordable even in one of the following recording conditions (1) to (3): (1) when a recording time for a shortest recording mark is not greater than 34 ns; (2) when a recording time of a channel bit length is not greater than 11 ns; and (3) when a recording linear velocity is not less than 11 m/s.
摘要:
An optical recording medium capable of recording and erasing information, includes a first dielectric layer, a recording layer, a second dielectric layer, a light reflection and heat dissipation layer, and an overcoat layer which are successively overlaid on a substrate, the recording layer including a phase-change recording material which includes as constituent elements Ag, In, Sb, Te, and N and/or O with the respective atomic % thereof being alpha , beta , gamma , delta and epsilon (the total atomic % of N and/or O), which are in the relationship of: 0
摘要:
An information recording apparatus performs an excellent recording, erasing and rewriting operation with respect to a recording medium, which can be recorded at a recording speed equal to or higher than 4X recording speed without large change in a recording strategy. The information recording apparatus records information on a recording medium by irradiating a pulsed light onto the recording medium. A controller controls an optical head to irradiate the pulsed light so that a length of a recording mark formed on the recording medium is an n times of a period Tw of a basic clock, where n is a natural number. The controller adds an off-pulse to an end of a final pulse of a train of multi-pulses contained in the pulsed light so that a light having a bias power Pb is irradiated during a period T1 of the off-pulse. The controller is capable of setting the period T1 of the off-pulse to a predetermined value so that a relationship 0≦T1
摘要:
A recording apparatus for recording information on an optical information recording medium by applying light thereon from an optical pickup, comprising: a detection part detecting as to whether or not an inconsecutive portion of addresses occurs in the optical information recording medium based on a signal detected via said optical pickup; and a correction part correcting address in the inconsecutive portion in case the inconsecutive portion is detected by said detection part.