摘要:
An apparatus to measure jitter of a signal read from an optical disk includes a binarization unit to binarize an input signal to generate a binary signal, an ideal signal generator to generate a noise-free ideal signal based on channel characteristics of the optical disk, and a jitter measurement unit to measure jitter of the input signal based on the binary signal and the ideal signal.
摘要:
An apparatus and method for determining an optimal write strategy when recording data onto an optical disk, and an apparatus and method for recording data, the method of determining a write strategy including: recording test data for each size of marks and spaces based on a plurality of write strategies; reproducing the recorded test data; measuring jitter values of the reproduced test data based on the plurality of write strategies; and determining an optimal write strategy according to the measured jitter values.
摘要:
A signal quality measuring apparatus includes a binary signal generating unit to generate a binary signal from an input signal; a level information extracting unit to extract level information from a relationship between the input signal and the binary signal using at least two window lengths; and a quality calculating unit to calculate a quality of the input signal based on the level information.
摘要:
A high-density optical recording medium and method of recording data on the optical recording medium. The optical recording medium includes a plurality of data recording/reproducing surfaces having reflectances for light passing through a pit area, a land/groove area, and a land/groove area on which data are recorded, of a data recording/reproducing surface included between a light source for emitting light and a recording/reproducing surface selected from the plurality of data recording/reproducing surfaces, the reflectances satisfy the expressions r1≧r2≧r3 and {(r1−r3)/r1}≦0.2, where r1, r2 and r3 are the reflectances of the pit area, the land/groove area and the land groove area on which data are recorded, respectively.
摘要翻译:一种高密度光记录介质和在光记录介质上记录数据的方法。 光记录介质包括多个数据记录/再现表面,其具有穿过凹坑区域的光的反射率,纹间/凹槽区域和记录有数据的纹间/凹槽区域,数据记录/再现表面包括在 用于发射光的光源和从多个数据记录/再现表面中选择的记录/再现表面,反射满足表达式r 1> = r 2> = r 3和{(r 1 -r 3)/ r 1 } <= 0.2,其中r 1,r 2和r 3分别是记录数据的凹坑区域,焊盘/凹槽区域和焊盘凹槽区域的反射率。
摘要:
A high-density optical recording medium and method of recording data on the optical recording medium. The optical recording medium includes a plurality of data recording/reproducing surfaces having reflectances for light passing through a pit area, a land/groove area, and a land/groove area on which data are recorded, of a data recording/reproducing surface included between a light source for emitting light and a recording/reproducing surface selected from the plurality of data recording/reproducing surfaces, the reflectances satisfy the expressions r1≧r2≧r3 and {(r1−r3)/r1}≦0.2, where r1, r2 and r3 are the reflectances of the pit area, the land/groove area and the land groove area on which data are recorded, respectively.
摘要:
A method of encoding information and a method of decoding information, and an apparatus to perform one or both methods, and an information storage medium on which to store the information, the method of encoding the information including encrypting data between two ECC-encoding operations, and the method of decoding the information including decrypting data between two ECC-decoding operations.
摘要:
A method of encoding information and a method of decoding information, and an apparatus to perform one or both methods, and an information storage medium on which to store the information, the method of encoding the information including encrypting data between two ECC-encoding operations, and the method of decoding the information including decrypting data between two ECC-decoding operations
摘要:
A method of optimizing a writing condition of an optical recording medium, including writing test pattern data with the writing condition on the optical recording medium, comparing an error pattern binary signal detected by reproducing the written test pattern data with a correct pattern binary signal of the test pattern data, and determining an optimum writing condition of the optical recording medium based on a result of the comparison.
摘要:
A high-density optical recording medium and method of recording data on the optical recording medium. The optical recording medium includes a plurality of data recording/reproducing surfaces having reflectances for light passing through a pit area, a land/groove area, and a land/groove area on which data are recorded, of a data recording/reproducing surface included between a light source for emitting light and a recording/reproducing surface selected from the plurality of data recording/reproducing surfaces, the reflectances satisfy the expressions r1≧r2≧r3 and {(r1−r3)/r3}≦0.2, where r1, r2 and r3 are the reflectances of the pit area, the land/groove area and the land groove area on which data are recorded, respectively.
摘要翻译:一种高密度光记录介质和在光记录介质上记录数据的方法。 光记录介质包括多个数据记录/再现表面,其具有穿过凹坑区域的光的反射率,纹间/凹槽区域和记录有数据的纹间/凹槽区域,数据记录/再现表面包括在 用于发射光的光源和从多个数据记录/再现表面中选择的记录/再现表面,反射满足表达式r 1> = r 2> = r 3和{(r 1 -r 3)/ r 3 } <= 0.2,其中r 1,r 2和r 3分别是记录数据的凹坑区域,焊盘/凹槽区域和焊盘凹槽区域的反射率。
摘要:
A high-density optical recording medium and method of recording data on the optical recording medium. The optical recording medium includes a plurality of data recording/reproducing surfaces having reflectances for light passing through a pit area, a land/groove area, and a land/groove area on which data are recorded, of a data recording/reproducing surface included between a light source for emitting light and a recording/reproducing surface selected from the plurality of data recording/reproducing surfaces, the reflectances satisfy the expressions r1≧r2≧r3 and {(r1−r3)/r1}≦0.2, where r1, r2 and r3 are the reflectances of the pit area, the land/groove area and the land groove area on which data are recorded, respectively.
摘要翻译:一种高密度光记录介质和在光记录介质上记录数据的方法。 光记录介质包括多个数据记录/再现表面,其具有穿过凹坑区域的光的反射率,纹间/凹槽区域和数据记录在其上的纹间/凹槽区域,数据记录/再现表面包括在 用于发射光的光源和从多个数据记录/再现表面中选择的记录/再现表面,反射率满足表达式r 1> = r 2> = r 3和{(r 1 -r 3)/ r1} <= 0.2,其中r 1,r 2和r 3分别是记录数据的凹坑区域,焊盘/凹槽区域和焊盘凹槽区域的反射率。