Abstract: When applying an electron beam to a master substrate of disk-shaped recording medium placed on a rotation stage, while rotating the master substrate by rotating the rotation stage, to write a master pattern of disk-shaped recording medium on the master substrate, causing the writing to be suspended based on abnormality information of environment and storing a rotation angle of the master substrate when the writing is suspended and causing, thereafter, the writing to be resumed from a suspended position of the writing on the master substrate based on the rotation angle.

Abstract: Provided is an optical disc drive device which stably controls an actuator of an optical pickup, by individually controlling an optical spot when following the guide track and an optical spot when recording/reproducing information on/from each recording layer. An optical spot when following the guide track and an optical spot when recording/reproducing information on/from each recording layer are individually controlled. At this time, the optical spot exclusive for the track and the optical spot exclusive for the recording/reproducing are formed on an optical disc.

Abstract: An optical pickup has an objective lens that is shared for light of three wavelengths. The effective diameter of the light that passes through the objective lens decreases in a sequence of the light of a first wavelength (light for a first optical disk), the light of a second wavelength (light for a second optical disk) and the light of a third wavelength (light for a third optical disk); and the light of the third wavelength is incident on the objective lens in a finite system. The objective lens is provided so that the focal distance of the light of the second wavelength is greater than the focal distance of the light of the first wavelength.

Abstract: An optical disc apparatus, for recording or reproducing information by irradiating a laser beam on an optical disc. More particularly, the present application relates to an optical pickup of the optical disc apparatus that produces a tracking error signal, in general, and the optical disc apparatus executes a tracking servo with using the tracking error signal.

Abstract: When performing recording/reproduction of information for a given recording layer of an optical disc having three recording layers, influences of reflected light from other recording layers are reduced or removed, thus making it possible to obtain a more stable RF signal or focus error signal. An optical pickup device includes a light source, a collimator lens, an objective lens, a photodetector, and a light shielding member. Among the recording layers of the optical disc, a first layer and a second layer adjoining each other are disposed in the order of the first layer and second layer from near the objective lens.

Abstract: In one embodiment, the optical pickup device includes: a light source that emits a light beam; a diffractive element that diffracts the light beam and generates a zero-order and ±first-order diffracted light beams; an objective lens that converges the diffracted light beams onto the same track on the storage medium; and a photodetector that receives the diffracted light beams reflected from the storage medium. If a distance from a light beam spot left by the zero-order diffracted light beam on the track to light beam spots left by the ±first-order diffracted light beams on that track is d [?m], the scanning linear velocity of the storage medium is v [m/s], and a time it takes for a phase-change material of the storage medium that has once been melted by the zero-order diffracted light beam to solidify is T [?s], vT?d is satisfied.

Abstract: A mobile user interface suitable for mobile computing devices uses device position/orientation in real space to select a portion of content that is displayed. Content (e.g., documents, files or a desktop) is presumed fixed in virtual space with the mobile user interface displaying a portion of the content as if viewed through a camera or magnifying glass. Data from motion, distance or position sensors are used to determine the relative position/orientation of the device with respect to the content to select the portion for display. Content elements can be selected by centering the display on the desired portion, obviating the need for cursors and pointing devices (e.g., mouse or touchscreen). Magnification can be manipulated by moving the device away from or towards the user. 3-D content viewing may be enabled by sensing the device orientation and displaying content that is above or below the display in 3-D virtual space.

Abstract: A detecting method for a touch panel includes providing a sensing matrix having a plurality of sensing units; detecting sensing data generated from the sensing unit and defining the sensing unit as a touch point or a non-touch point based on the sensing data; and grouping at least a portion of the touch points to form a touch point group, wherein projection of a touch point overlaps a projection of at least one touch point of the touch point group in one of a row direction and a column direction while adjacent to a projection in the other direction of at least one touch point of the touch point group; retrieving extreme positions of the touch point group in the row direction and the column direction; and determining a touch center position based on the extreme positions in the row direction and the column direction.

Abstract: An optical pickup, an optical disk drive device, an optical information recording device, and an optical information reproduction device in which a reproduction signal, a focus error signal, and a gap error signal can be detected with high accuracy when information is recorded/reproduced on/from an optical information medium having a plurality of information recording layers.

Abstract: There is provided a method of calculating the degradation over time of the quality of data recorded on an optical disk in a short time. In the method, when user data is recorded on a data area, a test signal including a component in which the signal level is smaller than a reference value, is recorded on a test area. Then, the test signal is reproduced from the test area when a predetermined time has passed, to calculate the quality degradation of the user data from the evaluation result. Alternatively, every time when the user data is recorded/reproduced on/from the data area, the test signal is recorded/reproduced repeatedly on/from the test area. Then, the test signal is reproduced from the test area at a predetermined timing, to calculate the quality degradation of the user data from the evaluation result.

Abstract: An optical disc recording device, wherein, during an OPC process addressing a write-once optical disc provided with only one or two recording layers, a recording power value of an optical pickup is changed within a range from (100?A) % of a reference recording power value to (100+B) % of the reference recording power value, and wherein, during an OPC process addressing a write-once optical disc provided with three or more recording layers of the same type as the aforementioned write-once optical disc, the recording power value of the optical pickup is changed within a range from (100?C) % of a reference recording power value to (100+D) % of the reference recording power value, D being set to be less than B.

Abstract: Provided is an optical touch sensor including an optical path through which light propagates, a metal layer disposed on the optical path, a flexible touch key configured to contact the metal layer when being bent, an incident light reflecting surface configured to make the light that propagates through the optical path be incident on the metal layer at an angle at which surface plasmon resonance occurs when the metal layer and the touch key are separated from each other, and a detector configured to detect reflected light from the metal layer and determine that the touch key is pressed in the case where an intensity of the reflected light increases.

Abstract: A character input method applicable to a handheld electronic device is provided. The character input method includes the following steps. Firstly, a motion path of the handheld electronic device is sensed. Next, the motion path is transformed into a stroke path. Afterward, an input character corresponding to the stroke path is recognized.

Abstract: A charge sharing style wide viewing liquid crystal display to which fast driving pre-charging technology may be applied to is disclosed. A charge sharing style wide viewing liquid crystal display is provided such that charge sharing is carried out between a liquid crystal capacitor and a charge sharing capacitor that correspond to the nth gate line when the mth (m?n+2) gate line is turned on.

Abstract: At a first time, an image sensor captures a first image including images of an object. At a second time, the image sensor captures a second image including images of the object. A coordinate calculation device calculates a first coordinate of the object at the first time according to the first image, and a second coordinate of the object at the second time according to the second image. A coordinate correction device calculates a displacement between the first time and the second time according to the first coordinate and the second coordinate, and corrects an output coordinate of the object at the second time according to the displacement.

Abstract: A touch panel comprises a substrate and a transparent conductive layer including a plurality of groups of first conductive patterns, second conductive patterns, and third conductive patterns, and a plurality of first wires, second wires, and third wires. Each group of first conductive patterns is arranged along a first direction. Each group of second conductive patterns is arranged along a second direction and located at a first side of the second direction. Each group of third conductive patterns is arranged along the second direction and located at a second side of the second direction. Each group of first conductive patterns, each group of second conductive patterns, and each group of third conductive patterns are electrically insulated to each other. Each second conductive pattern among each group of second conductive patterns has different areas, and each third conductive pattern among each group of third conductive patterns has different areas.

Abstract: An optical disc device capable of preventing a current larger than prescribed in specifications from flowing by measuring amounts of variation in drive signals of the actuator or the spindle motor, and in view of a correlation between those amounts of variation in the drive signals and the amount of current, changing the servo control system characteristics according to measured amounts of variation, and setting a limit to the level of drive signals.

Abstract: A electronic device and method regulates a display brightness of the electronic device. The electronic device can create relationships between the external environment brightness of the electronic device and the brightness of the display of the electronic device. Furthermore, the electronic device can regulate the brightness of the display, according to user's expression due to the former regulation. The operations of creating relationships and regulating the brightness can be expediently implemented, and faults of the operations can be avoided, by utilizing the electronic device.

Abstract: A touch device includes a touch pad and a base having an accommodating region and at least one first conductor. The touch pad is received in the accommodating region and subjected to a force to generate a changeable position relative to the base. The touch pad has a touch surface consisting of a plurality of capacitive sensors and at least one second conductor connected with at least one of the capacitive sensors. The second conductor is electrically connected with the first conductor. Capacitances measured from the capacitive sensors are substantially different between the touch surface touched with a conductive object and the second conductor connected with the first conductor, which is connected to a fixed voltage, current or a ground. Therefore, a control unit connected to the capacitive sensors can generate different control signals from the connecting state between the first conductor and the second conductor.

Abstract: An optical pickup apparatus comprising: an objective lens formed so that a first and second laser beams different in wavelength are respectively focused onto signal recording layers of a first and second optical discs; and a photodetector including a square-shaped light-receiving portion for being irradiated with return light, as a spot, of the first or second laser beam respectively reflected from the signal recording layers of the first or second optical discs, to generate a focus error signal, a length of a diagonal line of the light-receiving portion being substantially equal to a longer diameter of an elliptical spot formed in a direction of the diagonal line when the focus error signal is at a maximum level for an optical disc that is either one of the first and second optical discs, to which a laser beam shorter in wavelength out of the first and second laser beams is focused.