Lg Electronics Inc.

Hitachi-lg Data Storage Korea, Inc.

Hyundai Motor Company

Cheol Min Jin

Dong Keun Lee

Jeong Chae Youn

Hogil Lee

Young Do Choi

Hong Jo Jeong

Keuk Young Bang

The present invention provides wireless power transmitting method and apparatus. The wireless power transmitting method according to an embodiment of the present invention may measure a resonance frequency while changing an operating frequency of a resonance circuit, compare the measured resonance frequency with a reference frequency, and wirelessly transmit power when the measured resonance frequency is lower than the reference frequency. The reference frequency may be determined based on two or more among a self resonance frequency of the resonance circuit, a first resonance frequency measured for a receiving device, a second resonance frequency measured for a reference object and a third resonance frequency measured for the receiving device and the reference object.

Apparatus and method for transmitting power wirelessly

Embodiments of a method and apparatus of identifying optical disk types according to the present invention can identify the type of an optical disk (e.g., DVD-RAM, DVD-RAM, or DVD+/&#x2212;RW) based on comparisons between a plurality of signals. For example, comparisons between the magnitudes of DPD and DPP tracking error signals and their respective reference values can be used. If an optical disk is identified as DVD+RW or DVD&#x2212;RW, embodiments according to the present invention can further determine whether the optical disk is DVD+RW or DVD&#x2212;RW. For example, the frequency of a wobble signal resulting from the shape of tracks formed on the optical disk and variables that affect the wobble frequency (e.g., the rotational speed of the optical disk and the current track position) can be used.

Method and apparatus of identifying disc types

A method and device for searching a recording medium are provided. The recording medium has a management information area of which location information is overlapped with that of a program area. The method for determining an area on a recording medium having an overlapped time range between two areas reads a time address from a current position on the recording medium, obtains additional information from the recording medium or from a recording medium driving unit, if the read time address belongs to the overlapped range, and determines, based on the obtained additional information, to which one the areas the current position belongs. Therefore, it prevents wrong track jumps that are caused from time-overlapped areas on a capacity-expanded recording medium.

Searching method and device for a recording medium having overlapped time address

The present invention relates to a track access apparatus and a method by which an optical pick-up unit quickly accesses a destination track of an optical disc by controlling a tracking actuator using a back electromotive force by detecting the vibration of an objective lens, the position variation, and the distortion of an actuator which occur when the optical pick-up unit is moved across the tracks of the optical disc at a high speed. In the present invention, there are provided a photodetector for detecting the amount of the beams of a side spot and a main beam spot based on two sub-beams and one main beam, a differential amplifier for differentiating the two signals of the sub-beams and outputting a tracking error signal, a first phase/gain compensation unit for compensating the phase and gain of the tracking error signal, a position detection unit for detecting the position of the objective lens from two signals of the main beam, a second phase/gain compensation unit for compensating the phase and gain of the lens position detection signal, a microcontroller for outputting a switch control signal, a switch for selecting an output of a first or second phase/gain compensation unit based on the switch control signal, a power amplifier for amplifying the output of the switch, and a tracking actuator for driving the objective lens in the track direction and the radial direction of the tracks.

Optical disc track access apparatus and method for optical disc reproducer

The present invention relates to a method of changing a recording mode from CAV (Constant Angular Velocity) mode to CLV (Constant Linear Velocity) mode in the middle of recording data to a disk recording medium. A method according to the present invention reads ATIP-framed data encoded in a wobble signal formed along a spiral physical track while recording input data to a recording medium, and detects a sync signal contained in the read ATIP-framed data. Another method measures the frequency of a low-frequency component of the wobble signal instead of reading ATIP-framed data. These two methods determine, in common, when to change the recording mode from CAV to CLV based on the period of the detected sync signal or the measured frequency. The present invention makes it possible to record input data to an entire area of a disk more rapidly without fatal errors such as imperfect writing. As a result, total recording time can be reduced with stable recording guaranteed.

Method of changing a rotating mode between constant angular velocity and constant linear velocity

The present invention relates to a method of detecting a defect area without any mistake during data recording on a writable disk. This method detects a level of a servo error signal produced during a recording operation, checks whether the servo error signal is in an abnormal state based on the detected level, detects a periodic wobble signal or periodicity of the abnormal state occurrences of the servo error signal produced during the recording operation, and determines whether a recording area is in defect based on successful decoding of the detected periodic wobble signal or the periodicity of the abnormal state occurrences if the servo error signal is in an abnormal state. This method ensures exact detection of a defect area, whereby unnecessary speed reduction can be eliminated and successful data writing can be also guaranteed even in a defect area.

Method of detecting a defect area of a disk

An automated tinting film remover comprises a loading device for moving a vehicle window and locating it at a predetermined position, a securing device with which the properly located vehicle window can be firmly secured, and a removing device for eliminating a tinting film coated on the vehicle window. The removing device comprises a vapor emitting means for weakening the adhesive strength of the tinting film coated on the vehicle window, a cutting means having an electric conductive wire for cutting the tinting film, and a scraping means for peeling off the tinting film, whereby the removal of a tinting film coated on a vehicle window can be conducted in an automated manner with ease.

Automated tinting film remover for vehicle window glass

This invention provides a method and apparatus for automatic type discrimination of differently sized disk-shaped information storage media, wherein pulses in a signal generated during the initial rotation and the associated elapsed time are counted and used to detect the size of the disk-shaped information storage medium. The method according to this invention comprises the steps of detecting signals produced from a driving unit for rotating a disk-shaped information storage medium; and identifying the type of the disk-shaped information storage medium according to the size thereof on the basis of comparison of the detected signal with a reference signal. This invention enables to detect the size of the disk-shaped information storage medium in a shorter period time compared to the conventional art because the initial time duration needed to get a desired stable rotation speed, which depends on the size of the disk-shaped information storage medium, is no longer required.

Method and apparatus capable of identifying different types of disk-shaped information storage media

The present invention relates to an apparatus for dismantling a weather strip from the door opening of a discarded automobile. The apparatus comprises a main control body, a working arm pivotally mounted on the main control body, a weather strip remover mounted at the end of the working arm, the weather strip remover pulling the weather strip and detaching it from the body of the automobile, an arm supporter supporting the main control body relative to the door frame of the automobile; and a movable means for transporting the body with the weather strip remover and the working arm to the working area. The weather strip of the door opening is automatically removed from the discarded automobile, thereby reducing cost and labor hours and allowing for recycling of the rubber.

Apparatus for dismantling a weather strip from the door opening of a disused automobile

A system for recycling the components dismantled from a disused automobile, which includes a main body having a control part, front and rear glass removers connected with the main body for dismantling the glass from the body of the disused automobile, two molding removal systems connected to the glass remover for removing the molding which connects the glass to the body of the automobile, and a moving apparatus for removing the molding which connects the glass to the body of the automobile, and a moving apparatus for moving the main body in all directions and controlling the position of the main body to the automobile. The windshield glass and the rear glass are automatically dismantled from the disused automobile before compression of the body of the automobile.

Growing community of inventors

Seoul, South Korea

Cheol Min Jin