Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8164999 | Optical disc apparatus and method for determining information recording layer in optical disc An optical disc device includes a laser diode which irradiates an optical disc having a plurality of layers with laser light, a photodetection section which detects laser light reflected by the optical disc, which comprising a pair of sub-photodetectors and a main p... | 04/24/2012 |
| 8130615 | Device and method for generating track-crossing signal in optical disc drive A track-crossing signal generator includes a bottom envelope detecting unit, a defect detector, an auto gain control unit, and an amplifier. The bottom envelope detecting unit receives a radio frequency signal, and outputs a bottom envelope signal. The defect detect... | 03/06/2012 |
| 8094531 | Apparatus for and method of detecting tracking error signals An apparatus for detecting a tracking error signal includes an optical detector to receive light beams reflected from an optical disc and having a plurality of detecting regions; and a phase difference extracting unit to extract a phase difference between a pair of ... | 01/10/2012 |
| 8081550 | Optical pickup device In a multilayer disc has an increased number of recording layers) spaced by spacing from each other, a generation interval between focus error (FE) signals detected from the respective recording layers becomes small. This causes mutual interference between the FE si... | 12/20/2011 |
| 8077573 | Optical disk apparatus and disk identification method A highly reliable optical disk apparatus adapted to record and reproduce the information in and from plural types of optical disks is disclosed. An acquisition unit acquires a predetermined signal from the reflected light obtained by radiating a predetermined laser ... | 12/13/2011 |
| 8040775 | Optical disc apparatus and optical disc discriminating method An optical disc apparatus capable of discriminating swiftly and accurately a dual disc from other discs and an optical disc discriminating method, wherein the optical disc apparatus irradiates laser beams having a different wavelength onto the optical disc, detects ... | 10/18/2011 |
| 8018806 | Method for discriminating disc A disc discriminating method for use in an optical disc drive includes the following steps. Firstly, an optical pickup head of the optical disc drive is controlled to move in a first direction when the optical pickup head is in a track-unlocked state. Then, a tracki... | 09/13/2011 |
| 8018805 | Media type detection using a lock indicator A method for detecting a media type of an optical disc system comprising the steps of (A) checking for a first wobble signal associated with a first media type, (B) if step (A) detects the first wobble signal, operating the optical disc system as the first media typ... | 09/13/2011 |
| 7990828 | Method for controlling focus on label side A method for controlling focus on a label side of a light-scribe disc divides the label side into several zones, finds the maximum SBAD and the corresponding focus volt and spoke during focusing on each zone, approaches a primary focus volt level curve, compensates ... | 08/02/2011 |
| 7990827 | Optical disc device and optical disc determination method An optical disc device includes a control part for causing processing of determining a type of an optical disc to be executed. The processing caused by the control part to be executed for determining the optical disc includes: signal acquisition processing of acquir... | 08/02/2011 |
| 7920450 | Discrimination method for optical disc types and optical disc apparatus An optical disc apparatus, which discriminates types of optical discs having different thicknesses of transparent layers by using the same wavelength of laser light, includes an aberration correction unit for correcting spherical aberration, an objective lens for co... | 04/05/2011 |
| 7920449 | Method of controlling focus of optical information storage media recording and/or reproduction apparatus and apparatus therefor A focusing control method of an optical information storage media recording and/or reproduction apparatus controlling a focusing operation by moving an objective lens upwards or downwards in a direction towards or away from an optical information storage medium havi... | 04/05/2011 |
| 7916598 | Method for determining type of disk and apparatus thereof A method for determining a type of a disk and an optical storage apparatus thereof are provided. The method includes when the disk placed in the optical storage device is not a blank disk, determining whether the phases between a first signal and a second signal of ... | 03/29/2011 |
| 7916597 | Method for writing optical disc An optical disk writing method including determining a writing scheme for recording information on the optical disc based on received tracking error signals. The method also includes moving an optical pickup across tracks of the optical disc while the optical pickup... | 03/29/2011 |
| 7907489 | Optical-disc discrimination method and optical disc apparatus In an HD-DVD, record densities are different between in a lead-in area and in a data area. On the other hand, in a DVD, the record densities of a lead-in area and a data area are equal. In discriminating an optical disc between the HD-DVD and the DVD, a light beam h... | 03/15/2011 |
| 7903517 | Optical disk drive with disk type determination and method of determining a disk type of an optical disk with an optical disk drive An optical disk drive and a method for determining a disk type are described. The optical disk drive may be arranged to receive a radial error signal while an incident beam is focused onto the optical disk and before tracking the track, to analyze the radial error s... | 03/08/2011 |
| 7869324 | Method for identifying type of optical disk A method for identifying a type of an optical disk includes the steps of: turning on a laser diode of an optical pickup and focusing light emitted from the laser diode on the optical disk; moving the optical pickup to obtain a plurality of servo signals; reading a s... | 01/11/2011 |
| 7843786 | Discrimination method of optical storage medium A method for discriminating an optical storage medium is disclosed. A predetermined range of the optical storage medium is read after the light source is focused on; and thereby a plurality of data transition points and transition regions defined by an interval of t... | 11/30/2010 |
| 7808870 | Optical disk recording/reproducing device and disk determination method for optical disk recording/reproduction device An optical disk recording/reproduction device and a disk determination method for an optical disk recording/reproduction device. The disk determination method compares with a threshold value a drive value when the arrival of a focus point at a recording surface is d... | 10/05/2010 |
| 7801003 | Optical disc type determining method and optical disc device Whether an optical disc is a first optical disc or not is determined with reference to at least one of first and second focus error signal amplitude values. Then, if a sum value of the addition of a first focus balance signal value (CD-FBAL signal value) to a second... | 09/21/2010 |
| 7778128 | Focusing controller apparatus and method for an optical disk drive A focusing controller and the method thereof for an optical disk drive. The focusing controller includes a filter, a coupler and a focus compensator. The filter filters out a high-frequency component of the track error signal and derives an adjusted signal, while th... | 08/17/2010 |
| 7760604 | Optical disc device and tracking control method This invention provides an optical disc device that can prevent the occurrence of an error in a starting position of a write operation due to off-tracking, and to avoid an unnecessary stop of the write operation during writing. A tracking error signal generator gene... | 07/20/2010 |
| 7760603 | Apparatus and method for discriminating optical disc type An apparatus and method to accurately discriminate an optical disc type in an optical disc system which records and/or reproduces data to and/or from high density optical discs and low density optical discs includes irradiating a laser beam onto a given one of the o... | 07/20/2010 |
| 7751291 | Optical disc identification apparatus and method of identifying optical disc An optical disc identification apparatus is disclosed. The optical disc identification apparatus includes an optic pickup unit and a control unit. The optic pickup unit has a plurality of laser sources. The optic pickup unit emits any of lasers to the optical disc a... | 07/06/2010 |
| 7729221 | Optical disk discrimination method and optical disk device The invention provides an optical disk device that has a laser unit including a first objective lens and a second objective lens. A numerical aperture of the first objective lens is different from a numerical aperture of the second objective lens. The optical disk d... | 06/01/2010 |
| 7719941 | Method for identifying recording contents of an optical disk A method for identifying an optical disk according to a radio frequency integration filtering signal includes the steps of: moving an optical head to an initial position; rotating the optical disk and making focus, moving the optical head in a direction toward an in... | 05/18/2010 |
| 7706228 | System and method for controlling optical pickup unit A system for supplying a driving voltage to move an optical pickup unit to a predetermined position includes a storage unit, an output unit, and a drive module. The storage unit is used for storing instructions. The instructions include a move-outwards instruction, ... | 04/27/2010 |
| 7656765 | Apparatus and method for controlling tracking servo in near field optics Disclosed are an apparatus and a method for controlling a tracking servo in a near field optics. Gap error signals are detected in a divided state, and a push pull signal is compensated based on the detected gap error signals. A photo detector detecting the gap erro... | 02/02/2010 |
| 7646691 | Optical disk face discriminating system and optical disk drive An S-curve discriminating portion discriminates that a recording face of an optical disk is opposed to a pickup when a normal S-curve appears in a waveform of a focus error signal Fe that appears when an objective lens fluctuates vertically, while discriminates that... | 01/12/2010 |
| 7609599 | Method of identifying a type of an optical disc and the device therefor A method of identifying a type of an optical disc applied in an optical drive is provided. The optical drive at least comprises an optical pickup head. First, move the optical pickup head continually from an initial position. Then, emit a light beam on an optical di... | 10/27/2009 |
| 7596068 | Apparatus and method for determining type of optical disk Disclosed is an apparatus and method for determining the type of an optical disk so as to implement an optimal servo operation according to the type of a loaded optical disk. In the method, the level of a wobble extraction signal is detected while a focusing servo i... | 09/29/2009 |
| 7593300 | Digital tracking servo system with off-format detection An off-format condition in a digital tracking servo is presented. An off-format condition can be detected by low pass filtering a tracking control signal, detecting a DC level over a threshold level, and indicating the off-format condition if the DC level is above t... | 09/22/2009 |
| 7570561 | Method for determining type of digital versatile discs A method for determining the type of digital versatile discs (DVDs) is provided, for distinguishing among a read only memory (ROM) DVD, a recordable DVD and a re-writable DVD. The method includes reading a tracking error signal from a DVD. If the amplitude of the tr... | 08/04/2009 |
| 7518967 | Position control method and device, and optical disk device A position control method is disclosed that is capable of precisely and stably controlling a position of an object lens relative to a recording medium. When controlling the position of the object lens in the tracking direction, first, an attempt is made to read addr... | 04/14/2009 |
| 7512047 | Apparatus and method for reading from and/or writing to optical recording media The present invention relates to an apparatus for reading from and/or writing to optical recording media capable of playback of an optical recording medium based on one single focus search cycle. The apparatus distinguishes between the types of optical recording med... | 03/31/2009 |
| 7468939 | Optical disk apparatus with phase difference offset An optical pickup device capable of correcting an off-tracking which is ascribable to a phase shift of a differential push-pull signal waveform, even when an optical disk or an objective lens is tilted along a radial direction of the optical disk, so that stable tra... | 12/23/2008 |
| 7443774 | Optical head and data processing apparatus including the same An optical data processing apparatus reads and/or writes data from/on a data storage medium, in which first and second data storage layer are stacked, by radiating light from the second layer. The processor includes: a light detector including at least one photodete... | 10/28/2008 |
| 7440377 | Method for adjusting focus bias in optical disc drive and optical disc drive that can implement the method A method for adjusting a focus bias in an optical disc drive comprises the steps of: rotationally driving an optical disc in a state that only focus servo is engaged without engaging tracking servo; driving an actuator of an optical pick-up so that a laser beam proj... | 10/21/2008 |
| 7428199 | Optical disk stabilizing apparatus and method of controlling optical disk stabilizing apparatus An optical disk apparatus includes a rotary driving unit rotating an optical disk which is flexible, an optical pickup irradiating light upon a recording surface of the optical disk on which writing/reading of information is performed, a stabilizing unit stabilizing... | 09/23/2008 |
| 7414940 | Calibration of a focus error signal gain in a focus servo system A calibration of a focus error signal gain in a focus servo system of an optical disk drive is presented. The focus error signal gain can be calibrated by oscillating an optical pick-up unit in a focus direction through a focus point and determining a focus sum thre... | 08/19/2008 |
