Information storage medium and method and apparatus for recording data thereon
AssigneeSamsung Electronics Co., Ltd.
InventorsWook-yeon Hwang, Kyung-geun Lee, Chang-jin Yang, Tatsuhiro Otsuka
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Abstract
An information storage medium and a method and apparatus recording data to the information storage medium, the information storage medium having a write pattern for recording data, the write pattern including at least one pulse and a number of the at least one pulse being determined depending on a length of a recording mark. This makes it possible to record data using a write pattern having an optimal number of pulses, thereby preventing degradation in jitter characteristics due to residual heat or heat build-up caused by the use of unnecessary pulses even during high speed recording.
Claims22
An information storage medium to and/or from which data is recorded and/or reproduced as a recording mark and a space, wherein a write pattern for recording the data comprises at least one pulse and a number of the at least one pulse is determined depending on a length of the recording mark, and wherein the recording mark has a length of NT where N is a natural number and T is a period of a reference recorded/reproduced clock signal, and the write pattern comprises N−2 pulses when the N is greater than or equal to 3 or N−1 pulses when N is 2.
An information storage medium to and/or from which data is recorded and/or reproduced as a recording mark and a space, wherein a write pattern for recording the data comprises at least one pulse and a number of the at least one pulse is determined depending on a length of the recording mark, and wherein the recording mark has a length of NT where N is a natural number and T is a duration of a reference recorded/reproduced clock signal, and the write pattern comprises N−2 pulses when N is greater than 3 or N−1 pulses when N is 2 or 3.
A method of recording data as a recording mark and a space on an information storage medium, comprising:
- generating a recording waveform comprising a write pattern having pulses whose number is determined depending on a length of the recording mark;
- and
- creating the recording mark and the space using the generated recording waveform,
- wherein the recording mark has a length of NT where N is a natural number and T is a period of a reference recorded/reproduced clock signal, and the write pattern comprises N−2 pulses when N is greater than or equal to 3 or N−1 pulses when N is 2.
A method of recording data as a recording mark and a space on an information storage medium, comprising:
- generating a recording waveform comprising a write pattern having pulses whose number is determined depending on a length of the recording mark;
- and
- creating the recording mark and the space using the generated recording waveform, wherein the recording mark has a length of NT where N is a natural number and T is a period of a reference recorded/reproduced clock signal, and the write pattern comprises N−2 pulses when N is greater than 3 or N−1 pulses when N is 2 or 3.
An apparatus recording data on an information storage medium, the apparatus comprising:
- a recording waveform generating circuit generating a recording waveform comprising a write pattern with pulses whose number is determined depending on a length of a recording mark;
- and
- a pickup unit emitting a beam onto the information storage medium according to the generated recording waveform and creating recording marks or spaces for recording input data,
- wherein the recording mark has a length of NT where N is a natural number and T is a period of a reference recorded/reproduced clock signal, and the recording waveform generating circuit generates the recording waveform comprising the write pattern having N−2 pulses when N is greater than or equal to 3 or N−1 pulses when N is 2.
An apparatus recording data on an information storage medium, the apparatus comprising:
- a recording waveform generating circuit generating a recording waveform comprising a write pattern with pulses whose number is determined depending on a length of a recording mark;
- and
- a pickup unit emitting a beam onto the information storage medium according to the generated recording waveform and creating recording marks or spaces for recording input data,
- wherein the recording mark has a length of NT where N is a natural number and T is a period of reference recorded/reproduced clock signal, and the recording waveform generating circuit generates the recording waveform comprising the write pattern having N−2 pulses when N is greater than 3 or N−1 pulses when N is 2 or 3.
A method of recording data on an information storage medium, the method comprising:
- receiving input data and modulating the input data generating output data;
- generating a recording waveform having a write pattern and an erase pattern having a predetermined number of pulses;
- and
- recording the output data on the information storage medium by creating recording marks and spaces using the generated recording waveform, wherein the predetermined number of pulses is determined based upon a length of the recording marks,
- wherein the recording marks have a length of NT, where N is a natural number and T is a period of a reference recorded and/or reproduced clock signal, and the write pattern comprises N−2 pulses when the N is greater than 3 or N−1 pulses when N is 2.
A method of recording data on an information storage medium, the method comprising:
- receiving input data and modulating the input data generating output data;
- generating a recording waveform having a write pattern and an erase pattern having a predetermined number of pulses;
- and
- recording the output data on the information storage medium by creating recording marks and spaces using the generated recording waveform, wherein the predetermined number of pulses is determined based upon a length of the recording marks,
- wherein the recording marks have a length of NT, where N is a natural number and T is a period of a reference recorded and/or reproduced clock signal, and the write pattern comprises N−2 pulses when the N is greater than 3 or N−1 pulses when N is 2 or 3.
Dependencies are inferred from the claim text.