Abstract: A measurement correcting system including a field measuring unit and a processing unit is provided. The field measuring unit simultaneously senses a first signal to be measured and a second signal to be measured which have opposite polarities and substantially the same magnitude, and generates a first output signal and a second output signal correspondingly. The processing unit determines the first signal to be measured according to the first output signal and the second output signal. A measurement correcting method is also provided.

Abstract: Embodiments of the invention disclose a light-path device of an optical scanner that includes a curved-surface optical element and a light-path module. The arrangement between the curved-surface optical element and the light-path module may be designed such that the length of a light-path route through the light-path device may be adjusted to accommodate various sized objects to be scanned and physics characteristics of the photoelectric conversion device included in the scanner to convert the image into an electrical signal.

Abstract: The present invention is a changeable apparatus for different total tracks and a corresponding method. The apparatus reflects a light from a light source at least twice toward predetermined directions. The apparatus comprises plural reflection elements, at least one of the plural reflection elements is a rotational reflection element, which has plural reflection surface sets, and each reflection surface set has at least one reflection surface. The rotational reflective element further comprises a pivot axis is for each rotational reflection element for circulating and changing of reflection surface sets and a fixing apparatus, which connects to a rotational reflection element for adjusting and fixing positions of the rotational reflection element.

Abstract: An apparatus for echo cancellation in a transceiver of a full duplex communication system, where the transceiver includes a transmitter for transmitting a transmit signal and a receiver for receiving a receive signal, includes: an echo cancellation signal generator, coupled to the transmitter, for receiving the transmit signal and for generating an echo cancellation signal according to the transmit signal, wherein the echo cancellation signal reflects an effect of an impedance of a channel and a parasitic capacitor of the transceiver; and a calculation module coupled to the transmitter, the receiver, and the echo cancellation signal generator for receiving the receive signal and for canceling the echo of the receive signal according to the echo cancellation signal to generate an echo-cancelled signal, wherein the effect of the impedance of the channel and the parasitic capacitor of the transceiver in the echo-cancelled signal is reduced.

Abstract: A circuit board structure includes a dielectric layer, a first metal layer, a second metal layer and a first ferrite element. The first metal layer is disposed on an upper surface of the dielectric layer and has a first circuit area, a second circuit area and a first metallic neck connecting the first circuit and the second circuit areas. The second metal layer is disposed on a lower surface of the dielectric layer and has a third circuit area, a fourth circuit area and at least a second metallic neck connecting the third circuit and the fourth circuit areas. The orthogonal projections of the first and the second metallic necks on the upper surface are not overlapped. The first ferrite element is disposed on the upper surface and overlays at least one of the orthogonal projections of the first and the second metallic necks on the upper surface.

Abstract: A circuit board including a first patterned metal layer and a second patterned metal layer is provided. The first patterned metal layer has metal blocks and spiral structures. A gap is kept between any two adjacent metal blocks. Each of the spiral structures is electrically connected between any two adjacent metal blocks. The second patterned metal layer is disposed beside the first patterned metal layer and has jumper segments. Each of the jumper segments has a first end and a second end opposite to the first end. Each of the spiral structures has an outer end and an inner end. The outer end is connected to one of the two adjacent metal blocks. The inner end is electrically connected to the first end of one of the jumper segments, and the second end of the jumper segment is electrically connected to the other one of the two the metal blocks.

Abstract: A structure of a multi-layer printed circuit board includes a power layer, a ground layer, and a dielectric layer. The dielectric layer is located between the power layer and the ground layer. The dielectric layer has a relative permittivity and a relative permeability, wherein the product of the relative permittivity and the relative permeability substantially decreases along with an increase in frequency within a frequency range.

Abstract: A compensation apparatus for image scan, applied to an optical scanner with a platform, on which an object to be scanned is disposed. The optical scanner has a photosensitive apparatus with a set of scan photosensitive devices and a storage apparatus. When the object is scanned by the set of scan photosensitive devices, a scanned image is obtained and saved in the storage apparatus temporarily. The compensation apparatus has a set of calibration boards, a set of calibration photosensitive devices and an image processor. The set of calibration boards has two calibration boards located at two sides of the platform. The set of calibration photosensitive devices is located at two sides of the set of scan photosensitive device. The image processor is used to extract and compare the calibrated image, so as to adjust the scanned image.

Abstract: An apparatus for echo cancellation in a transceiver of a full duplex communication system, where the transceiver includes a transmitter for transmitting a transmit signal and a receiver for receiving a receive signal, includes: an echo cancellation signal generator, coupled to the transmitter, for receiving the transmit signal and for generating an echo cancellation signal according to the transmit signal, wherein the echo cancellation signal reflects an effect of an impedance of a channel and a parasitic capacitor of the transceiver; and a calculation module coupled to the transmitter, the receiver, and the echo cancellation signal generator for receiving the receive signal and for canceling the echo of the receive signal according to the echo cancellation signal to generate an echo-cancelled signal, wherein the effect of the impedance of the channel and the parasitic capacitor of the transceiver in the echo-cancelled signal is reduced.

Abstract: An echo cancellation apparatus of a transceiver in a full duplex communication system is disclosed. The full duplex communication system includes a transmitter section for transmitting a transmit signal and a receiver section for receiving a receive signal. The echo cancellation device includes an echo cancellation signal generator coupled to the transmitter section for receiving the transmit signal and for generating an echo cancellation signal according to the transmit signal, a load resistor and a parasitic capacitor of the transceiver; and a calculation module coupled to the transmitter section, the receiver section, and the echo cancellation signal generator for receiving the receive signal and for eliminating at least high frequency components of the echo signal.

Abstract: A handheld Multi-Function Peripheral (MFP) capable of scanning includes the operation panel, the control processing unit, and the scanning apparatus. The operation panel is for the user to input a data and a scanning order. The control processing unit is for proceeding logic operation and data processing, and receiving the scanning order. The scanning apparatus includes the scanning channel, the light source, and the photoelectronic imaging device. The scanning channel is the passage for the to-be-scanned document. The light source and the photoelectronic imaging device are equipped in the one side of the scanning channel to provide the light for scanning and capture image of the to-be-scanned document, respectively.

Abstract: A carrier tape structure including a belt-shaped tape body, a plurality of carrier boxes, and a plurality of protruding ribs is provided. The carrier boxes are disposed separately on the tape body, and the protruding ribs are in strip shape and are disposed between the carrier boxes. The material around the protruding ribs has lower strength so that the tape body can be bent along the peripheries of the protruding ribs. A plurality of chains is disposed along two sides of the tape body, and the chains can be hung onto a winding machine so that the carrier tape structure can be winded on the winding machine without damaging the carrier boxes.

Abstract: A method of operating an optical module/printer module system through a changer such that either the optical module or the printer module is driven. A first module and a second module is defined such that if the first module is an optical module, the second module is a printer module and if the first module is a printer module, the second module is an optical module. The operating method includes the following steps. In step one, the changer engages with the first module and drives the first module. In step two, the changer rotates so that the changer detaches from the first module and engages with the second module. In step three, the changer drives the second module.

Abstract: A low noise multilayer printed circuit board includes at least one ground layer and at least one power layer. The at least one ground layer is divided into a first area and a second area. The first area and the second area are connected by a first metal neckline. The at least one power layer is divided into a third area and a fourth area. The third area and the fourth area are connected by a second metal neckline. The first area corresponds to the third area. The second area corresponds to the fourth area. The location where the first and second areas are connected by the first metal neckline is different from that where the third and fourth areas are connected by the second metal neckline.

Abstract: An Optic Reflection device, for application as Reflectors in the Light Track of optic installations, more specifically, as Reflector for single or multiple reflections in the scanner, apparatus of optics industry. Designed trapezoidal as opposed to rectangular or otherwise configuration pursuant to prior arts. In a preferred embodiment, the application is in the form of a reflector of single reflection to incident light beam; in another preferred embodiment, the application is in the form of reflector permissive of multiple reflections. Design pursuant to the trapezoidal optic reflector pertaining to the invention can substantially reduce space required of Light Track in an optic system, and therefore commensurably volume and weight claimed in the entire optic system, which facilitates compact design of the products and installation of other devices or utilities in the space so saved in the entire optic system.

Abstract: A structure for protecting and guiding a flat cable connected between a traveling module and a protective cover of a scanner is disclosed. The protective structure includes an anti-bending member mounted onto the traveling module for preventing the flat cable from being over-bent at its first end. A guide channel member is disposed on the protective cover under the flat cable and along the moving direction of the traveling module for guiding the flat cable during moving of the traveling module and preventing the flat cable from being swung left and right. The second end of the flat cable is extended into the protective cover via a protective sheath fitted on the cover for preventing the second end of the flat cable from excess bending angle and keep the flat cable smoothly moving without deflection.

Abstract: An optical scanner that may assemble the lens design for varying the focus and resolution, having a light source, a reflection compound mirror, a charge coupled device, a basic objective lens and a compound lens. The basic objective lens is designed by simulation software. According to the lens design theory, the compound lens is designed. By incorporating the basic objective lens and the compound lens, different resolutions such as 1200 dpi, 1600 dpi and 2400 dpi of the optical scanner are obtained without redesigning the lens device, the current specification of the optical scanner is also varied.

Abstract: An optical scanner that may assemble the lens design for varying the focus and resolution, having a light source, a reflection compound mirror, a charge coupled device, a basic objective lens and a compound lens. The basic objective lens is designed by simulation software. According to the lens design theory, the compound lens is designed. By incorporating the basic objective lens and the compound lens, different resolutions such as 1200 dpi, 1600 dpi and 2400 dpi of the optical scanner are obtained without redesigning the lens device, the current specification of the optical scanner is also varied.

Abstract: A module of reflection mirrors of L-shape according to the invention, arranged in an optical chassis of scanner, is comprised of a first L-shaped mirror and a second L-shaped mirror. The recession portions for the second L-shaped mirror and the first L-shaped mirror are corresponded to each other in the space. After entering the module with a specific angle, an incident light is reflected several times between the two L-shape mirrors before it leaves the module with another angle again. Wherein, there are a first reflection zone and a second reflection zone at the recession portion of the first L-shaped mirror, and there are a third reflection zone and a fourth reflection zone at the recession portion of the second L-shaped mirror.

Abstract: A changeable resolution apparatus and method for scanner includes two rotational disks which have respectively a plurality of lenses of different focuses and a plurality of charge-coupled devices (CCD) of different resolutions located therein. A motor is provided to drive a transmission shaft to rotate in a positive or a reverse direction. Two one-way shaft bearings are engaged with the transmission shaft to drive the rotational disks one-way in opposite directions for changing lens and CCD combination to reach different resolutions. The apparatus is located in the scanner for users to adjust scanner resolution based on scanning requirements to get optimum resolution result.