Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8169866 | Reproducing power adjusting method, optical information recording/reproducing apparatus and information recording media By referring to a table of reproducing conditions and medium specific parameters, stored in an optical disc or optical disc apparatus and/or generated by the optical disc apparatus, the medium specific parameters to be used for performing reproducing power adjustmen... | 05/01/2012 |
| 8159911 | Recording device, recording method, disc manufacturing method and optical disc recording medium An optical disc recording medium is irradiated with laser light having a predetermined laser power to deform an irradiated portion of a substrate into a protruding portion. Since the substrate is deformed so as to have protruding portions, a reflecting layer arrange... | 04/17/2012 |
| 8154965 | Method and device for retrieving information from an optical record carrier at various reading speeds The present invention is related to a method and a reading device (1) for retrieving information from an optical record carrier (10) in which the read power level of a radiation beam (3) for scanning the optical record carrier is set in dependen... | 04/10/2012 |
| 8149661 | Short-pulse light source, laser light emission method, optical device, optical disc device, and optical pickup Directed to freely adjusting an emission period of a semiconductor laser. In the present invention, pulsed light serving as pulse-shaped laser light (LL) is emitted from a semiconductor laser (3), and a laser drive voltage (DJ) that is generated on the... | 04/03/2012 |
| 8139454 | Recording and reproducing apparatus and method A Spare Area kept unused on a disk is available for use other than spare processing, or Defect Management process, and compatibility of the disk is at least secured between different recording apparatuses. This is implemented by recording a SWP_PAC cluster defined a... | 03/20/2012 |
| 8130609 | System and method of bias control A system and method of laser bias control in optical recording media applications are disclosed. In some implementations, bias control for output power may be based upon a detected ratio of erase power to write (or peak) power, i.e., the Pe/Pw ... | 03/06/2012 |
| 8130610 | Optical disc recording method and optical disc recorder To compensate for edge shifts varying largely in accordance with preceding mark lengths. Provided are a method and a recorder in which a duration of a cooling pulse in each recording pulse string to form a mark having a length of nT is determined on the basis of an ... | 03/06/2012 |
| 8116180 | Optical disc recording device and recording method thereof An optical disc recording device according to the present invention is capable of quickly performing the OPC operation for a rewritable optical disc, and is also capable of setting the proper writing power for both an unwritten area and a written area. A microcomput... | 02/14/2012 |
| 8107334 | Laser power control method and optical information recording/reproducing device Control powers of a first definition group corresponding to pulse trains to form recording marks, and levels of second definition groups corresponding to the control powers of the first definition group for respective states on a recording medium are set. The laser ... | 01/31/2012 |
| 8081545 | Optical disk image forming device and optical disk image forming method When an optical disk image forming device forms an image on an optical disk, the image forming device reads information of kinds of coloring matters used in an image forming area from information described in an information area of the optical disk. Then, the optica... | 12/20/2011 |
| 8072855 | Optical recording/reproducing apparatus and optical recording/reproducing method Disclosed is an optical recording/reproducing apparatus. The optical recording/reproducing apparatus includes a laser light source capable of emitting pulsed laser light in a mode-locked state in which light beams having different wavelengths are synchronized and th... | 12/06/2011 |
| 8064302 | Optical disk drawing apparatus, host computer, and optical disk drawing method A drawing pulse generating unit of an optical disk recording apparatus judges a bit stream of main data contained in a bit stream signal of frame-formatted data, and generates pulse signals DOTX 1 and DOTX 2 based upon the judgment, and then, outputs t... | 11/22/2011 |
| 8023373 | Disc drive and photo-detector circuits A method of reducing power dissipation in a variable-gain photo-detector circuit is described. The variable-gain photo-detector circuit has an output to output a main spot signal and at least one side spot signal. The main spot (M) and the side spot (Si or S2... | 09/20/2011 |
| 8018803 | Information recording apparatus and method and computer program An information recording apparatus (1) is provided with: a recording device (501) for recording record information onto an information recording medium (100) by irradiating laser light (LB) with a predetermined power; an adding device (550 | 09/13/2011 |
| 8014242 | Laser driving circuit, its recording compensation method and optical-disk apparatus A laser driving circuit employing a recording compensation circuit configured to generate a light emission timing of a laser on the basis of recorded data and a recording clock signal which are supplied to the recording compensation circuit includes: a phase synchro... | 09/06/2011 |
| 7986598 | Recording methods and devices for recording information on dual layer recordable disks The invention relates to recording methods for recording information on a dual layer recordable disk, and to corresponding recording devices. In one such method and recording device the OPC-area is variably located on a layer of the disk. In a preferred embodiment t... | 07/26/2011 |
| 7983125 | Table-driven power utilization metrics An apparatus and method for determining the power consumption of one or more disk arrays are described. Power consumption information for various hardware components of the array, especially that for the disk drives since these consume more than 90% of the required ... | 07/19/2011 |
| 7957238 | Optical recording method and optical recorder A write strategy for use in recording is determined from recommended write strategy parameters recorded on an optical disk (160) and the characteristics of the optical recording device used in recording; a recommended asymmetry value is determined from the di... | 06/07/2011 |
| 7952968 | Method and apparatus for recording data in an optical disk device A method and apparatus for recording data on an optical disk calculates an optical power at a first recording speed, compares the calculated optical power to a predetermined value, and then determines whether to apply the first recording speed based on a result of t... | 05/31/2011 |
| 7948844 | Information recording/reproducing device and the like An information recording/reproducing device which can record or reproduce the predetermined information quickly and properly is proposed. An information recording/reproducing device 10 detects recording condition of an area in radial direction of an op... | 05/24/2011 |
| 7933179 | Optical information reproducing method, optical information reproducing device, and optical information recording medium In a super-resolution optical disk for the purpose of achieving an increase in the density of recording data by reproducing a recording mark smaller than optical resolution, the optimum reproduction power needs to be determined since the quality of a super-resolutio... | 04/26/2011 |
| 7903511 | Optical information reproducing method, optical information reproducing device, and optical information recording medium for performing reproduction of information by using laser beams [PROBLEMS] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure. [MEANS FOR SOLVING PROBLEMS] An optical information reproducing device (10)... | 03/08/2011 |
| 7885155 | Data readout method, data readout device, and optical disk A data readout method is disclosed that is able to read data from an optical disk capable of super resolution readout with high accuracy. The data readout method allows reading data recorded in an optical disk by irradiating a laser beam onto the optical disk. The m... | 02/08/2011 |
| 7839737 | Optical recording medium with power calibration areas and a recording method therefor with optimum power control In an optical recording medium having a plurality of recording layers on which information can be recorded by irradiating a laser beam from one side thereof, an optimum recording power to each of the recording layers can be determined. The optical recording medium h... | 11/23/2010 |
| 7830762 | Optical disk apparatus A laser power which is lower than an optimum reproduction laser power is set as an initial value. The reproduction laser power is increased from the initial value while trial reproduction is performed until a quality level of a reproduction signal is not lower than ... | 11/09/2010 |
| 7821890 | Apparatus for writing a data to an optical storage media and servo control unit and laser diode driver unit thereof An apparatus for writing data to an optical storage media and a servo control unit and a laser diode driver unit thereof. The apparatus making a laser diode emit light includes a servo control unit and a laser diode driver unit. The servo control unit includes a con... | 10/26/2010 |
| 7800998 | Optical disk and optical disk drive An optical disk apparatus for suppressing a DSV and performing R-OPC. An encoding/decoding circuit inserts a synchronization information item to a head of a synchronous frame once when data are recorded on an optical disk. First, the encoding/decoding circuit insert... | 09/21/2010 |
| 7796483 | Method for evaluating read stability of optical disc and information reproduction apparatus A method and apparatus for measuring the read stability of an optical disc are provided. Specifically, readout of the optical disc is repeated at each of at least two read laser beams powers being different from each other. A graph is drawn in which the inverses of ... | 09/14/2010 |
| 7778126 | Apparatus and method for controlling a recording light signal A method and apparatus for controlling a light source for use with an optical disc having optimum power values for different stages in a writing signal for the optical disc, includes comparing current operational characteristics of the light source to previous opera... | 08/17/2010 |
| 7768885 | Method for evaluating optical recording medium, optical recording medium, and information-recording/reproducing apparatus The reproduction durability of an optical recording medium is evaluated highly accurately in a short period of time by providing a method for evaluating the optical recording medium, the method including determining an operating laser power for heating a recording l... | 08/03/2010 |
| 7755990 | Information recording device, information recording method, and information recording program Accurate calibration of recording power is performed without exceeding a rated output value of a laser diode even if recording speed is increased and high recording power is required. An information recording apparatus records information on an information recording... | 07/13/2010 |
| 7724619 | Power adjusting method for pickup head accessing optical disc and optical disc information reproduction device thereof A power adjusting method for a pickup head accessing an optical disc. The method includes identifying a target data transfer rate utilized by the PUH for accessing the optical disc; calculating an appropriate laser power according to the target data transfer rate; a... | 05/25/2010 |
| 7715289 | Optimal power control The present invention relates to determining an optimized write power used for writing electronic data on optical disc and includes a method, a device and a computer program product for determining a write power for writing electronic data on a medium (32, 108 | 05/11/2010 |
| 7672206 | Recording method of optical disc device and method for determining whether there is abnormality in the same A recording method and a malfunction detection method of an optical disc device are provided. The level of a signal driving a laser diode is detected during a recording operation. The detected level is compared with a reference limit, and the recording operation is ... | 03/02/2010 |
| 7663994 | Data recording method and data recording equipment A frequency characteristics compensation method that can be applied to various waveforms (strategies). When determining the amount of frequency compensation, a deteriorated part by frequency characteristics is compensated for with respect to the difference between t... | 02/16/2010 |
| 7652961 | Optical information recording method and optical information regeneration recorder, and signal processing circuit, and recording reproduction program and information recording medium An optical information recording method in an optical recording generation method for performing recording and reproduction of information by radiating laser light which is pulse-modulated according to a recording waveform having a plurality of setting parameters on... | 01/26/2010 |
| 7639575 | Recording condition setting method, program, recording medium, and information recording apparatus A recording condition setting method includes the steps of: a) obtaining identification information from an information recording medium; b) searching through a table including history information indicative of temperature information detected in the vicinity of a l... | 12/29/2009 |
| 7583571 | Write based power adaptive control system An apparatus comprising a first circuit, a second circuit and a third circuit. The first circuit may be configured to (i) generate a read power signal and (ii) control power of a laser beam emitted from an optical pick-up circuit during a read process. The second ci... | 09/01/2009 |
| 7561506 | Information-recording method and information-recording medium An information-recording method includes the steps of moving a light beam at a selected linear velocity relative to the information-recording medium; controlling the light beam to generate a multi-pulse having at least three power levels of a first power level Ph, a... | 07/14/2009 |
| 7561507 | Information recording and reproducing apparatus An information recording and reproducing apparatus is disclosed. The apparatus includes a running power controlling and recording unit and an interval adjusting unit which adjusts an interval for performing running power control and makes a suitable ROPC operation p... | 07/14/2009 |
