Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7983127 | Optical disk device and parameter selection method Provided is an optical disk device installed in a personal computer, including: an information creation unit that creates identification information for identifying the type of the personal computer based on a command transmitted from the personal computer; and a pa... | 07/19/2011 |
| 7944788 | Optical disk drive An optical disk drive capable of reproducing data even when defects, such as flaws or stains, are present in the disk. A system controller of an optical disk drive reproduces data by setting the maximum speed in accordance with the type of an optical disk, an amount... | 05/17/2011 |
| 7864643 | Apparatus and method for testing mechanical endurance of surface of optical disc, the optical disc of same kind as the tested optical disc An apparatus and method for testing mechanical endurance of a surface of an optical disc is disclosed, which includes a rotating plate on which the optical disc is fixed to generate scratch thereon, and rotating the fixed optical disc; and a plurality of abrasion wh... | 01/04/2011 |
| 7864644 | Optical storage medium reading/writing method and device with improved reliability A method and device are disclosed for improving reliability of reading an optical storage medium, such as an optical disc (20). A disc spin speed value (31) of the optical disc (20) is provided and an unnormal value of said disc spin speed value... | 01/04/2011 |
| 7626904 | Apparatus and method for testing mechanical endurance of surface of optical disc, the optical disc of same kind as the tested optical disc An apparatus and method for testing mechanical endurance of a surface of an optical disc is disclosed, which includes a rotating plate on which the optical disc is fixed to generate scratch thereon, and rotating the fixed optical disc; and a plurality of abrasion wh... | 12/01/2009 |
| 7564752 | Disc signal evaluation apparatus and disc signal evaluation method By decoding a formatted 1-77PP signal 22 outputted from a BD-ROM formatter 20 at a high speed, comparing it with original data 34 in a comparator unit 30 and checking authenticity of data from the BD-ROM formatter 20 in real time, ... | 07/21/2009 |
| 7545719 | Optical disk apparatus capable of measuring and recording signal condition, and method thereof An optical disk apparatus is capable of recording a signal on an optical disk by directing an optical beam thereon at a plurality of recording speeds. A condition measuring position storing part stores one or more condition measuring positions at which a condition o... | 06/09/2009 |
| 7440366 | Optical disk drive for driving copy-controlled CD An optical disk drive for driving an out-of-specification disk such as a CCCD. When the out-of-specification disk, such as a CCCD (Copy-Controlled CD), is loaded in the optical disk drive, a system controller of the optical disk drive reads TOC data in a first sessi... | 10/21/2008 |
| 7394735 | Apparatus and method of updating filter tap coefficients of an equalizer An apparatus, a method, and a computer readable recording medium thereof to update filter tap coefficients of an equalizer include a defect signal detection unit and a coefficient updating unit. The defect signal detection unit receives a sampled input signal reflec... | 07/01/2008 |
| 7369470 | Method of recording erase pattern information on an optical recording medium, erasing information on the optical recording medium based on the erase pattern information, and optical recording medium therefor An optical recording medium allowing data to be recorded on, erased from, and reproduced from, and storing information about power levels of an erase pulse. The recorded erase pattern information may include information about power levels of first and last pulses of... | 05/06/2008 |
| 7362674 | Defect detection apparatus During a predetermined period of time after the operation of an optical disc drive has changed from recording to playback or from playback to recording, a first monomulti circuit outputs a pulse signal according to the operation change of the optical disc drive. On ... | 04/22/2008 |
| 7349306 | Method of recording erase pattern information on an optical recording medium, erasing information on the optical recording medium based on the erase pattern information, and optical recording medium therefor An optical recording medium allowing data to be recorded on, erased from, and reproduced from, and storing information about power levels of an erase pulse. The recorded erase pattern information may include information about power levels of first and last pulses of... | 03/25/2008 |
| 7339864 | Method and apparatus for setting recording condition, recording and reproducing apparatus, recording condition setting program, and recording medium A recording pulse condition for obtaining a reproduction result which fulfills predetermined signal quality is sought by performing testwrite and reproduction after uniformly changing predetermined recording pulse conditions corresponding to all mark lengths (S1 | 03/04/2008 |
| 7340749 | Method and apparatus to detect presence of or a size of a data cartridge A media-detection system for a cartridge-receiving device may comprise, according to one embodiment, a cartridge-referencing member mounted to the cartridge-receiving device. The cartridge-referencing member is resiliently displaceable by a data cartridge received i... | 03/04/2008 |
| 7330141 | Compensation circuit and compensation method to compensate nonlinear distortions of an A/D converter The invention relates to a compensation circuit (1–6) to compensate nonlinear distortions of an A/D converter comprising a signal input and a compensation system. In order to avoid the high costs related to the complex analog design of the A/D converter and... | 02/12/2008 |
| 7321534 | Signal output method and optical information recording medium A signal output method for reducing jitter and forming pits having stable shapes on an optical information recording medium with high recording density is provided. A write signal includes a write permission signal including a repetition of write enable and pause in... | 01/22/2008 |
| 7276274 | Optical recording medium and method for recording and reproducing data An optical recording medium includes a substrate, a light transmission layer and a plurality of recording layers between the substrate and the light transmission layer and capable of recording data in the plurality of recording layers and reproducing data recorded i... | 10/02/2007 |
| 7274629 | Method for correcting influence of thickness unevenness of recording medium, information recording/reproducing apparatus using the same method and optical head unit An optical disk unit of this invention includes a defocus detecting system for detecting a defocus of an objective lens, a thickness unevenness detecting system for detecting a thickness unevenness of a transparent resin layer provided nearest the objective lens of ... | 09/25/2007 |
| 7254101 | Laser beam power modulation pattern decision method, device for recording data onto optical recording medium, and optical recording medium It is an object of the present invention to provide a method for determining a pattern for modulating the power of a laser beam which can determine a pattern for modulating the power of a laser beam so that data can be recorded in a write-once type optical recording... | 08/07/2007 |
| 7248552 | Method and apparatus for determining recording pulse parameters for an optical disc If data is recorded using a disc with deviating characteristics and a recorder with deviating characteristics, data will not be appropriately recorded, and errors will occur in the read signal. Standard recording pulse parameters specifying recording pulse positions... | 07/24/2007 |
| 7233554 | Disk drive system employing effective disk surface stabilization mechanism A stabilization part stabilizes surface vibration of a flexible optical disk along a rotation axis direction of the optical disk by means of pressure difference of air flow created according to Bernoulli's law at a portion on which information writing/reading is per... | 06/19/2007 |
| 7231649 | Optical recording medium and method for optically recording data in the same An optical recording medium includes a substrate, a first recording layer formed on the substrate and containing an element selected from the group consisting of Si, Sn and Ge as a primary component, and a second recording layer located in the vicinity of the first ... | 06/12/2007 |
| 7230897 | Defect detection device The defect detection device includes: an amplification section for amplifying a reflection signal corresponding to the intensity of light reflected from an optical disc according to a control signal indicating recording or playback; an envelope detection section for... | 06/12/2007 |
| 7218593 | Recording strategy generation method and an optical information recording medium An optical information recording medium is capable of supplying an optimum recording strategy for a high-speed recording, and for a plurality of scanning speeds, using a smaller number of parameters than conventionally required. The parameters include: Td1 | 05/15/2007 |
| 7215624 | Optical disk apparatus and optical disk recording method An optical disk apparatus includes a detector for detecting a data string corresponding to a waveform pattern having a predetermined time width, an ideal signal generator for generating a data string of an ideal signal having a predetermined time width, which corres... | 05/08/2007 |
| 7196645 | Method and compensation device for compensation of characteristic errors of an analog-digital converter To compensate for errors during the conversion of an analog input signal into a digital output signal in an analog-to-digital converter (ADC), an error of the digital output signal is corrected during operation of the ADC by a compensation device that utilizes store... | 03/27/2007 |
| 7196990 | Information recording scheme for preventing recording failure resulting from impact or vibration An information recording apparatus includes: an information recording part performing information recording on a recording medium divided into a plurality of sectors each including a plurality of information units; a prediction part detecting or predicting an occurr... | 03/27/2007 |
| 7188510 | Apparatus and method for testing mechanical endurance of a surface of an optical disc An apparatus and method for testing mechanical endurance of a surface of an optical disc are disclosed. The apparatus includes a rotating plate, on which an optical disc to be scratched is loaded, for rotating the loaded optical disc, and a plurality of abrasion whe... | 03/13/2007 |
| 7164637 | Information recording method and information recording apparatus In a method of transforming a recording power level into multi-levels by using an extra recording power level, the optimum value of each recording power level is obtained, thereby achieving recording with good accuracy. By including a first test writing step (S1 | 01/16/2007 |
| 7123562 | Method and device for determining a set of recording pulse series parameters for optical carrier recording and optical record carrier A method is described for determining a set of recording pulse series parameters for recording information on an optical record carrier. First a series of test patterns is written on the record carrier with a values of the parameters. On reading the test patterns, t... | 10/17/2006 |
| 7113458 | Optical disc apparatus In an optical disc apparatus for recording and/or reproducing data on an optical disc, a lens holder for holding an objective lens is dynamically moved not only in a direction perpendicular to a data recording face of an optical disc but also in a direction parallel... | 09/26/2006 |
| 7099251 | Method of controlling laser power and optical disk player A method of controlling a laser power of a zone Constant Linear Velocity (CLV) type optical disk player, in which a linear velocity of writing data is accelerated, by stages, toward an outer edge of an optical disk. The method includes changing a laser power for wri... | 08/29/2006 |
| 7095696 | Recording/reproducing device A recording/producing device for writing data on a recording medium, or reading data from the recording medium, wherein data matching a recording pattern so specified as to include a plurality of mutually different sets of mark lengths and space lengths is written o... | 08/22/2006 |
| 7065019 | Method for recording data on optical recording medium A method for recording data on an optical recording medium includes the step of receiving data to be written and control data. The control data includes status information to indicate whether or not an other sector within a block in which a sector is included is val... | 06/20/2006 |
| 7023777 | Optical disk recording/reproduction apparatus with a detection means for detecting dirt on the optical disk An optical disc recording/reproducing apparatus includes: recording/reproducing means for recording/reproducing information by emitting a light beam onto a disc having a track which wobbles at a predetermined frequency; reflected light detection means for detecting ... | 04/04/2006 |
| 6977477 | Systems, apparatus, and methods for motor control Systems and methods are provided through which the current to a spindle motor of the recording medium of a mass storage device is modulated to avoid anomalies in the operation of mass storage device and reduce power consumption. In the example of a disc drive, the c... | 12/20/2005 |
| 6975571 | Method for optically recording information and device for optically recording information by the same A method by which, in an optical disk recording and reproducing device, the time required for a test recording performed prior to an actual information recording can be reduced according to characteristics of an optical disk. A random pattern signal is transmitted f... | 12/13/2005 |
| 6876613 | Disc crack detection method and method of controlling speed of disc drive using the same A method of detecting a crack in a disc loaded on a disc drive and a method of automatically lowering a target speed in response to the detection of a crack in order to stabilize the disc drive. According to the methods, it is automatically determined whether a disc... | 04/05/2005 |
| 6804797 | Method of verifying defect management area information of disc and test apparatus for performing the same A method of verifying that a disc recording and reproducing apparatus normally generates or updates defect management area (DMA) information in a supplementary spare area extension mode, and a test apparatus therefore. The method includes extending the supplementary... | 10/12/2004 |
| 6791926 | Method and device for finding conditions on recording pulse of optical disk If data is recorded using a disc with deviating characteristics and a recorder with deviating characteristics, data will not be appropriately recorded, and errors will occur in the read signal. Standard recording pulse parameters specifying recording pulse positions... | 09/14/2004 |
