摘要:
An information storage medium (a disc) includes an area and a user data area. The area includes a recordable zone having a drive & disc zone in which information on a drive and information on a state of the disc are recorded. The drive & disc zone includes a plurality of physical clusters or ECC blocks and the information on the drive and the information on the state of the disc are recorded in the same physical cluster or ECC block or different physical clusters or ECC blocks.
摘要:
A method of managing defects considering compatibility with a rewritable disc, a reproducing and/or recording apparatus implementing the same, a write-once recording medium therefore, and a medium including computer readable code controlling the implementation of defect management. The method includes providing a plurality of temporary defect management areas on the write-once recording medium; performing defect management using the plurality of temporary defect management areas; and when one among the plurality of temporary defect management areas is exhausted, writing full flag information indicating that the one temporary defect management area is exhausted to at least one among remaining temporary defect management areas. Accordingly, defect management can be efficiently performed.
摘要:
A reproduction-only optical information storage medium including a plurality of areas and at least one transition area. Each transition area is located between two adjacent areas. The transition area allows data to be smoothly reproduced from the reproduction-only optical information storage medium at a low error generation rate. Also, since the optical information storage medium provides standards for the transition area, it is compatible with existing optical information storage media.
摘要:
An optical recording medium has a user data area and a lead-out area, wherein the user data area and the lead-out area each has grooves and lands formed thereon. Wobbles are formed on at least one lateral surface of grooves of the user data area and the lead-out area, and configured such that wobble characteristics are made different between the user data area and the lead-out area. Different types of wobbles are formed on the grooves of either the user data area or the lead-out area, thereby preventing an optical pickup that performs recording/reproduction from deviating from the user data area. Also, in a multi-layer optical recording medium, a whole area of a recording layer is configured to have a same condition, thereby preventing deterioration in reproduction and/or recording due to a difference in light power transmittance of another recording layer.
摘要:
An adaptive writing method of a high-density optical recording apparatus and a circuit thereof. The circuit includes a discriminator for discriminating a magnitude of a present mark of input NRZl data and magnitudes of leading and/or trailing spaces of the input NRZl data, a generator for controlling the waveform of a write pulse in accordance with the magnitude of the present mark of the input NRZl data and the magnitudes of the leading and/or trailing spaces of the input NRZl data to generate an adaptive write pulse, and a driver for driving a light source by converting the adaptive write pulse into a current signal in accordance with driving power levels for respective channels of the adaptive write pulse. The widths of the first and/or last pulses of the write pulse waveform are varied in accordance with the magnitude of the present mark of input NRZl data and the magnitude of the leading and/or trailing spaces, thereby minimizing jitter to enhance system reliability and performance.
摘要:
An apparatus for and a method of reproducing information from an optical information storage medium (OISM) in which inherent information and control data are recorded according to a bi-phase modulation method and other data are recorded according to a general modulation method. Sum signals of signals reflected from the OISM are determined. A ROM-PIC demodulator demodulates optical information storage medium-related information (OISMRI) from the sum signal. A data demodulator demodulates reproduction-related user data from the sum signal, a wobble PIC demodulator demodulates recordable OISMRI recorded as pit wobbles from a differential signal of the reflected signals, and a wobble PID demodulator demodulates physical identification data that is recorded as pit wobbles from the differential signal. A determination is made whether the OISM is a read-only OISM or a recordable OISM based on whether the optical information storage medium comprises a plurality of different modulation codes.
摘要:
A method of and apparatus for managing disc defects in a disc using a temporary defect management area in the disc, and the disc, where the method includes recording in a data area user data; and recording in a temporary defect management area, which is present in at least one of a lead-in area and a lead-out area, which temporary defect information and temporary defect management information regarding the user data recorded in the data area are recorded. Accordingly, the method and apparatus are applicable to recordable discs and capable of effectively using the defect management area.
摘要:
A data storage medium which includes a link zone, an apparatus and a method of recording data, and an apparatus and a method of reproducing data. The data storage medium includes a plurality of ECC blocks in which user data are stored, and a plurality of link zones arranged among the ECC blocks so as to correspond to the ECC blocks, Additional information on the ECC blocks is recorded in the link zones.
摘要:
A method of recording data on an optical recording medium includes forming a mark or a space using a recording waveform which includes a DC record pattern, and an erase pattern that includes a multi pulse. According to the method and an apparatus using the method, the distortion of a mark can be prevented and the shape of a mark can be improved, thereby increasing recording/reproducing characteristics.
摘要:
A recording medium storing a write protection information, and a write protection method for protecting data recorded on a recordable and/or rewritable disc from unwanted overwriting or erasing. In order for write protection of a disc in a bare state that is usually used in a cartridge having a recognition switch for write-protection, such as a DVD-RAM, write protection information is recorded in a Lead-in area, a Lead-out area or a recording information area other than a user data area of the disc, and the data is protected from unwanted overwriting or erasing using the write protection information. Also, even though the write protection information stored on a disc does not match the state of a recognition switch of a case for write-protection, the data can be prevented from unwanted overwriting or erasing. Thus, the write protection can be ensured when a recordable and/or rewritable recording medium, such as DVD-RAM, DVD-R and DVD-RW, is used in a bare state.