Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 7016280 | Tracking and focus servo system with defect detection A defect detector in an optical disk drive is presented. The defect detector indicates a defect by monitoring a sum signal. The sum signal is calculated from optical signals from detectors in an optical pick-up unit of the optical disk drive. A defect can be indicat... | 03/21/2006 |
| 7015849 | Control circuit According to the present invention, there is disclosed a control circuit in which a D/A converter having an output voltage switchable based on a set value held in a register, an operation amplifier including two input terminals and one output terminal, and a switch ... | 03/21/2006 |
| 7012871 | Information recording method and apparatus with suppressed mark edge jitters A method for recording information is disclosed in which an information recording medium is irradiated with a recording energy beam power-modulated into at least a record power level and a record-ready power level lower than the record power level. When forming a ma... | 03/14/2006 |
| 7012941 | Laser module A laser module for transmitting/receiving digital signals using a laser diode as an optical source is disclosed. The input end of the laser module is provided with a low pass filter, such that the low pass filter makes a 3 dB bandwidth of frequency response transfer... | 03/14/2006 |
| 7009923 | Method of and apparatus for recording information A method of recording information in which each recording mark is formed in a recording medium, by irradiating a pulse chain of an energy beam including a first pulse, a middle pulse chain, a last pulse and a negative pulse following the last pulse. The adjusting av... | 03/07/2006 |
| 7006414 | Optical disk device An optical disk device for writing information on an optical disk having an APC part for monitored driving of a laser diode is provided which performs first and second OPCs. An unused partition of a test area and reference power value are read out from the optical d... | 02/28/2006 |
| 7006419 | Information recording device An information recording device comprising at least a recording pulse generating means and a recording pulse selecting means capable of generating various multi-pulses each of which is a combination of a leading heating pulse and a succeeding heating pulse, and rect... | 02/28/2006 |
| 7006420 | Method for tuning write strategy parameters of an optical storage device, and system thereof A method, for tuning a plurality of write strategy parameters of an optical storage device, includes: detecting a plurality of lengths, each length corresponding to a pit or a land on an optical storage medium accessed by the optical storage device; performing calcu... | 02/28/2006 |
| 7006418 | Optical disk device that monitors chip temperature of a drive and controls its operation based on the chip temperature Monitor circuits monitor junction temperatures of chips of driver ICs which drive a driving part of a recording/reproduction system. Comparison circuits compare the junction temperatures with respective arbitrarily set temperatures to output temperature flags as com... | 02/28/2006 |
| 7006412 | Optical disk drive and optical disc recording method The present invention makes it possible to control a writing light quantity by selectively using a light quantity detection result S0 (C+D) obtained from areas C and D at the back side in the direction of scanning with laser beams when data is recorded onto a... | 02/28/2006 |
| 6999402 | Device and method of recording information on an optical disc A device for recording information on an optical disc so as to improve the recording quality of the information when a recording operation has just started. The recording device includes a luminous element radiating a light for recording information on the optical d... | 02/14/2006 |
| 6999398 | Method and apparatus for recording information on information recording medium Information is recorded on an information recording medium such as a magneto-optical recording medium, having two recording tracks arranged alternately, typically in a double spiral manner. The two recording tracks have different recording characteristics and inform... | 02/14/2006 |
| 6999393 | Optical disc recording apparatus with realtime updating of strategy A disc apparatus is designed for recording a signal on an optical disc by irradiating an optical beam according to a strategy which is stepwise updated by a given step amount. In the disc apparatus, a detector successively detects a linear velocity of the optical di... | 02/14/2006 |
| 6993687 | Information processing device and information processing method, maintenance information management system and recording medium According to the present invention, maintenance data about a plurality of distribution terminal devices which are different from each other in frequency with which they are in use and circumstances under which they are in use are transmitted to a host computer, wher... | 01/31/2006 |
| 6993688 | Data sector error tracking and correction mechanism A method is provided for reducing growth errors in disc drive. First, a number of sectors to be read is determined. Data is then read from all sectors of the number of sectors on a disc during a first disc revolution. Next, error sectors having a number of errors ab... | 01/31/2006 |
| 6992957 | Controller of data recorder A controller of a data recorder that records data on a recording medium such that the occurrence of buffer underrun errors are prevented. Data encoded by an encoder is recorded on the recording medium. A decoder decodes the data recorded on the recording medium. The... | 01/31/2006 |
| 6987717 | Optical disk device recording data on a recordable or rewritable optical disk by setting a recording velocity and a recording power for each of zones on an optical disk An information recording device for writing information in a circumferential direction of a disk-type recording medium, with a substantially constant linear density. The device performs a test-writing in a predetermined area on the disk-type recording medium at a pr... | 01/17/2006 |
| 6985414 | Method and apparatus for writing on an optical disk with beam spots aligned at an angle to data tracks Data is written on a plurality of data tracks on an optical disk by a plurality of laser beams. The spots illuminated by the beams are spaced apart to prevent thermal interference. The spots are aligned along a line at an angle to the tangent of the data tracks. The... | 01/10/2006 |
| 6982943 | Method and apparatus for controlling power during recording of a visible image in optical storage medium A controlling unit 130 of an optical disc recording apparatus judges a failure of a focus servo in accordance with an output signal of a servo circuit 107 When the failure of the focus servo is detected, a laser light irradiating position at the time o... | 01/03/2006 |
| 6980497 | Optical disk recording apparatus and control method thereof An optical system of an optical disk recording apparatus irradiates a disk with a main beam for use in writing a data signal onto a disk and a sub-beam succeeding the main beam. When writing a data signal onto the disk, a site on the disk at which a data signal is w... | 12/27/2005 |
| 6980006 | High speed envelope detector and method Envelope detector and method for determining whether the level of a differential input signal DPIN−DNIN is above a reference voltage VREF. The differential input signal is converted to a differential current IDP−IDN, the reference voltage is converted... | 12/27/2005 |
| 6975572 | Optical disc apparatus with regulation of recording velocity and laser power A test recording is performed with respect to an optical disc prior to a regular recording, and a β value for setting a qualitative parameter relating to the level of the recording state within a preferable range is derived from a result of the test recording. Then... | 12/13/2005 |
| 6970410 | Focus detection in a digital focus servo system A system for determining whether a focus servo system is in focus or out of focus (i.e. open) is disclosed. A sum signal can be compared with a threshold value. If the sum signal is below the threshold value, then a focus open condition (i.e., out-of-focus) can be i... | 11/29/2005 |
| 6970407 | Recording medium for storing write protection information and write protection method thereof 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... | 11/29/2005 |
| 6970403 | Calibration of tracking error signal offset in a tracking servo system A calibration for a tracking error signal offset in a tracking servo system of an optical disk drive is presented. In some embodiments, the tracking error signal offset is adjusted for best servo function by, for example, adjusting the center of a tracking error sig... | 11/29/2005 |
| 6965547 | Tracking and focus servo system with error signal inverse non-linearity calibration A digital servo system of an optical disk drive with a calibrated inverse non-linearity function is disclosed. A look-up table is determined, for example, with a focus error signal gain corresponding with a focus error signal offset so that the response of the focus... | 11/15/2005 |
| 6963525 | Optical disc recording method, optical disc recording device, and optical disc Prior to an actual record on an optical disc (10), in an outer peripheral test area (22a) which is on the outer peripheral side with respect to a program area (18) of the optical disc (10), a test record is repeatedly performed a p... | 11/08/2005 |
| 6963531 | Recording medium for storing write protection information and write protection method thereof 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... | 11/08/2005 |
| 6963527 | Information recording method and optical recording medium therefor An information recording method including irradiating a phase change recording layer of an optical recording medium with either a multi-pulse laser light train having a recording power of Pw or laser light having an erasing power Pe to record a mark having a length ... | 11/08/2005 |
| 6961095 | Digital display jitter correction apparatus and method A jitter correction apparatus and method are disclosed. In one embodiment, the apparatus has a rising edge corrector to receive a jittered signal and to output a jitter corrected rising edge of the jittered signal. The apparatus may also have a falling edge correcto... | 11/01/2005 |
| 6961294 | Optical information recording apparatus for controlling a power level of recording An information recording apparatus controls a recording power to be optimal without using a high-rate sampling circuit even when a recording condition changes. A laser diode emits a light at a first optical amount value and a second optical amount value greater than... | 11/01/2005 |
| 6961860 | Method and system for optimizing power consumption during data read/write operation in disk-based memory A method and system for optimizing energy consumption during data read/write operations in a disk-based memory system is provided. The method includes the steps of reading a data clip length, Ls and determining an available energy-optimum recordable track... | 11/01/2005 |
| 6958962 | Optical disk device The present invention provides an optical disk device which optimizes recording power level used when recording data. A controller records test data in a test region of an optical disk and evaluates reproduced signal quality of the test data, so as to determine an o... | 10/25/2005 |
| 6958957 | Digital tracking and focus servo system with TES to FES crosstalk calibration A servo system that calibrates a cross-talk gain parameter in a tracking error signal to focus error signal crosstalk correction is provided. The cross-talk gain parameter can be optimized such that the effects of a perturbation applied to the tracking servo loop on... | 10/25/2005 |
| 6958858 | Method for scanning microscopy; and scanning microscope A method for scanning microscopy is disclosed. It contains the step of generating an illuminating light beam that exhibits at least a first substantially continuous wavelength spectrum whose spectral width is greater than 5 nm; the choosing of a second wavelength sp... | 10/25/2005 |
| 6957021 | Optical transceiver with memory mapped locations A controller for controlling a transceiver having a laser transmitter and a photodiode receiver. The controller includes memory for storing information related to the transceiver, and analog to digital conversion circuitry for receiving a plurality of analog signals... | 10/18/2005 |
| 6956810 | Phase change optical information recording medium A phase change optical information recording medium including: a substrate; and a recording layer which is located overlying the substrate and in which marks are to be formed to store information, wherein the substrate includes plural sessions including a first sess... | 10/18/2005 |
| 6956797 | Digital servo system with error signal integrity testing A sample integrity test is disclosed. The sample integrity test receives an error signal and a defect signal. If the defect signal indicates the presence of a defect, a low-pass filtered error signal is substituted for the error signal. The low-pass filtered error s... | 10/18/2005 |
| 6956800 | Pre-pit detecting apparatus detecting pre-pit signal from only signals input during period of applying light beam having reproducing power When record information is recorded on a recording medium with recording control information pre-recorded thereon by forming pre-pits so that the recording control information will be used to control the recording of the record information to be recorded on the reco... | 10/18/2005 |
| 6956804 | Optical recording medium with recording marks having different states, and method of recording using the optical recording medium An optical recording medium having a higher improved read accuracy is disclosed. In the case of irradiating a laser beam to an optical recording medium including an optical reflective layer and a recording layer so as to record information therein, in the recording ... | 10/18/2005 |
