Abstract:
A method for controlling focus loop of an optical storage device includes: moving a lens of an optical pick-up head in a first moving direction; performing a focusing operation when a first S-curve sequence appears in a focus error signal; and when a light beam generated from the optical pick-up head is not focused on an optical disc, performing the focusing operation when a second S-curve sequence appears in the focus error signal; wherein the first S-curve sequence and the second S-curve sequence appear in the focus error signal during one revolution of the optical disc.
Abstract:
The display module contains a circuit board, a heat-resistant and transparent protective layer, and a transparent and waterproofing enclosing member. The circuit board has a number of LED devices configured on the front surface and at least a terminal on the back surface. The LED devices are electrically and signally wired to the terminal so that electricity and video signals are fed to the LED devices via the terminal. The protective layer is coated on the outer surfaces of the LED devices and the circuit board so as to protect the wiring, the soldering contacts, and the electrical components of the circuit board from being damaged by the high temperature during the process of forming the enclosing member. The enclosing member wraps the circuit board and the LED devices entirely within and exposes only the terminal.
Abstract:
An image sensor including a substrate, a plurality of conductive sections, a first type doped layer, an intrinsic layer, and a transparent electrode layer is provided. Wherein, the conductive sections are disposed on the substrate, and the dielectric layer is disposed between two adjacent conductive sections. In addition, the first type doped layer overlays the conductive sections and the dielectric layer, and the intrinsic layer is disposed on the first type doped layer. Moreover, the transparent electrode layer is disposed on the intrinsic layer.
Abstract:
A method for determining an optimum write power for writing data to an optical disc is disclosed. The method includes utilizing a plurality of candidate write powers for writing data to the optical disc; measuring at least a writing quality parameter corresponding to each of the candidate write powers, respectively; determining a characteristic curve of the writing quality parameters to the candidate write powers; and determining the optimum write power according to a write power corresponding to a target inflection point of the characteristic curve.
Abstract:
A codebook generating method includes a dividing and transforming step dividing an original image into original blocks and transforming the original blocks into original vectors; a dividing step grouping the original vectors to obtain centroids; a first layer neuron training step selecting a portion of the centroids as first-level neurons; a grouping step assigning each of the original vectors to a closest first-level neuron so as to obtain groups; a second layer neuron assigning step assigning a number of second-level neurons in each of the groups, and selecting a portion of the original vectors in each of the groups as the second-level neurons; and a second layer neuron training step defining the original vectors in each of the groups as samples, training the second-level neurons in each of the groups to obtain final neurons, and storing vectors corresponding to the final neurons in a codebook.
Abstract:
The invention provides an optical disk drive. The optical disk drive comprises a pickup head, a seek control device, a lens vision characteristic decoder, and an anti lens shift device. The pickup head comprises a sled and a lens for projecting a beam on a disk. The seek control device moves the sled, and shifts the lens with a shift distance relative to an origin at a center of the sled. The equalizer derives a servo signal from a reflection of the beam. The lens vision characteristic decoder obtains a vision characteristic of the lens according to the servo signal and determines a track-on direction according to the vision characteristic. The anti lens shift device triggers the seek control device to perform a track-on process according to the track-on direction.
Abstract:
A method for controlling layer changes for an optical disk drive is provided, where a focus of a laserbeam emitted by a pickup head of the optical disk drive is moved from a current data layer of a disk to a target data layer of the disk. First, a position of a collimator lens of the pickup head is adjusted for spherical aberration correction. The objective lens is then lowered to a low position to move the focus of the laserbeam off the surface of the disk. The objective lens is then raised towards the disk. A focusing error signal is generated while the objective lens is being raised. Whether a target S-curve corresponding to the target data layer is present in the focusing error signal is then started to be detected. If the target S-curve is detected, the focus on operation on the target data layer of the disk is successful.
Abstract:
A method for identifying an optical disc's type includes: detecting at least one header's appearance according to a reproduced signal in an optical storage device accessing the optical disc; after the appearance of a first header of the at least one header is detected, detecting whether there is another header's appearance in a window that lags behind the first header's appearance; and determining whether the optical disc is a DVD-RAM disc according to the number of times that there is a header's appearance in a corresponding window.
Abstract:
A socket device with an indication portion comprises a colored sleeve; the sleeve being made by high molecular organic plastics; a socket; the sleeve being rotatable installed on the socket; an indication portion on a surface of the sleeve for indicating a value about the size of the socket. The socket has an annular recess for receiving the sleeve. The sleeve may be an annular ring; or the sleeve is a C ring; or the sleeve has a protrusion and the protrusion is received in the annular recess.
Abstract:
A method for forming an aluminum sleeve comprises the following steps of: preparing material; wherein an aluminum alloy substrate is prepared; forging the aluminum material into a sleeve; trimming the sleeve in detail; thermally processing the sleeve for enhancing and hardening the forged sleeve; and anodizing-processing the sleeve to form a film on the sleeve. Between the forging and thermal processing; machining the trimmed sleeve through at least one process of rolling, grinding; polishing and vibration. Between thermal processing and anode-processing, surface-processing the sleeve so as to generate a blurred surface by a sanding step. In the anode-processing, dying the sleeve so that the color of the sleeve without fading or stripping.