Abstract: An operational amplifier includes an input stage, an output stage, an output enable switch, an internal capacitor, a coupling effect reduction circuit. The input stage provides an intermediate signal according to an input signal. The output stage, including an output node, provides a driving signal according to the intermediate signal. The output enable switch is turned on during an output enable period, having a start time point, to drive a load with the driving signal. The internal capacitor is coupled between the input stage and the output stage. The coupling effect reduction circuit, coupled between the internal capacitor and the output node or between the internal capacitor and the input stage, is turned off during an operational period starting from the start time point, to prevent coupling charge generated when the output enable switch is turned on from affecting operational voltage levels of the input stage.

Abstract: A driving method applicable to a display device including multiple display driving circuits, includes: the display driving circuits synchronously receiving a start pulse and generating a synchronous timing signal; a previous display driving circuit sending out a first signal to a rear display driving circuit, so that the rear display driving circuit detects and stores a signal reception delay, the display reception delay denoting a delay between the synchronous timing signal and the first signal received by the rear display driving circuit; after storing the display reception delay, the rear display driving circuit temporarily stopping receiving a system clock signal and temporarily stopping generating the synchronous timing signal; and the previous display driving circuit sending a second X signal to the rear display driving circuit to wake up the rear display driving circuit for preparing to receive a display data.

Abstract: Voltage detecting circuit for detecting a voltage state of a voltage source includes a first route, a second route and a comparator. First route is between a voltage source and a ground voltage, having a first current source and a first MOS resistor, connected in series at a first node with outputting a first voltage. Second route is between the voltage source and the ground voltage, having a second current source and a second MOS resistor, connected in series at a second node with outputting a second voltage. The comparator receives the first voltage and the second voltage and outputs the voltage state. The comparator includes a current offset circuit for producing an offset voltage to the second voltage. A voltage comparing unit compares the first voltage and the second voltage with offset by a voltage difference, and outputs the voltage state according to variance of the voltage difference.

Abstract: A bias current control method for an operational amplifier is disclosed, which includes detecting a slew rate operating signal, determining signal period length of the slew rate operating signal to generate a determination signal, and generating a high bias modulation signal or a low bias modulation signal to the operational amplifier according to the determination signal and the slew rate operating signal.

Abstract: An adaptive amplification circuit is disclosed, which includes an operational amplifier including a variable bias current source for providing a variable bias current for the operational amplifier, a simulation unit for simulating operational characteristics of the operational amplifier and transforming a simulation input voltage to a simulation output voltage, and a bias control unit for generating a bias control signal to the variable bias current source according to the simulation output voltage so as to adjust the variable bias current.

Abstract: An estimation method is provided for use in a receiver of an OFDM (orthogonal frequency division multiplexing) system to estimate the ICI (inter-carrier interference) and the noise power of a channel. Two pilot signals respectively carried by two subcarriers are received from the channel wherein the two pilot signals are adjacent and differ by a first phase angle. Another two pilot signals respectively carried by another two subcarrier are received from the channel wherein the another two pilot signals are adjacent and differ by a second phase angle. According to some embodiments of the invention, these phases are correlated with the ICI power, but are uncorrelated with the noise power. The estimation method then individually estimates the ICI power and noise power according to the first phase and the second phase.

Abstract: A projector capable of projecting a gray-level image for adjusting a color wheel delay includes a housing, a light source installed in the housing, a color wheel, an image modulator, a control circuit, and a scalar. The color wheel separates the light from the light source into color light. The image modulator modulates the color light from the color wheel and projects the color light to form an image on a screen. The control circuit connected to the image modulator controls the image modulator to operate synchronously with the color wheel. The scalar connected to the image modulator generates a gray-level image signal. The image modulator modulates the color light and forms a gray-level image on the screen by receiving the gray-level image signal from the scalar. The control circuit adjusts the image modulator to operate synchronously with the color wheel according to the gray-level image signal.

Abstract: A memory access apparatus is coupled to a memory unit and includes a header access circuit and a payload access circuit. The header access circuit includes a header fetching unit used to fetch a header descriptor in the memory unit, and the payload access circuit includes a payload fetching unit used to fetch a payload descriptor in the memory unit. The header access circuit and the payload access circuit perform fetching with respect to the memory unit in a non-sequenced manner.

Abstract: An estimation method is provided for use in a receiver of an OFDM (orthogonal frequency division multiplexing) system to estimate the ICI (inter-carrier interference) and the noise power of a channel. Two pilot signals respectively carried by two subcarriers are received from the channel wherein the two pilot signals are adjacent and differ by a first phase angle. Another two pilot signals respectively carried by another two subcarrier are received from the channel wherein the another two pilot signals are adjacent and differ by a second phase angle. According to some embodiments of the invention, these phases are correlated with the ICI power, but are uncorrelated with the noise power. The estimation method then individually estimates the ICI power and noise power according to the first phase and the second phase.

Abstract: Voltage detecting circuit for detecting a voltage state of a voltage source includes a first route, a second route and a comparator. First route is between a voltage source and a ground voltage, having a first current source and a first MOS resistor, connected in series at a first node with outputting a first voltage. Second route is between the voltage source and the ground voltage, having a second current source and a second MOS resistor, connected in series at a second node with outputting a second voltage. The comparator receives the first voltage and the second voltage and outputs the voltage state. The comparator includes a current offset circuit for producing an offset voltage to the second voltage. A voltage comparing unit compares the first voltage and the second voltage with offset by a voltage difference, and outputs the voltage state according to variance of the voltage difference.

Abstract: A rail-to-rail operational amplifier capable of reducing current consumption includes an amplification stage circuit including a first compensation output terminal and a second compensation output terminal, for generating an amplified signal according to an input signal, an output stage circuit coupled to the amplification stage circuit, for outputting the amplified signal, and a compensation circuit coupled to the amplification stage circuit and the output stage circuit. The compensation circuit includes a first voltage generator for generating a first voltage, a second voltage generator for generating a second voltage, a first compensation capacitor, a second compensation capacitor, and four switches named from a first switch to a fourth switch, wherein the first voltage is approximately a steady state voltage of the first compensation output terminal and the second voltage is approximately a steady state voltage of the second compensation output terminal.

Abstract: An electric device includes a main body, a supporting crutch and a pivot mechanism connecting the body to the crutch. The body is rotated around the crutch through the pivot mechanism. The pivot mechanism includes first and second bearing shims. The first bearing shim has a limiting salient, which has a first sidewall, a second sidewall and an inclined surface. The inclined surface is tilted from the second sidewall to the first sidewall. The second bearing shim has a sliding salient. When the sliding salient is disposed on the first/second sidewall, the main body is positioned at a first/second position. The sliding salient crosses the first sidewall and slides on the inclined surface to the second sidewall by a first force. The sliding salient crosses the second sidewall and slides on the inclined surface to the first sidewall by a second force larger than the first force.

Abstract: The present invention discloses a color calibrating method for setting target gamma curves of a target display device by utilizing operations of color space transformation and chromaticity coordinate value comparison according to color characteristics of a reference display device. The color calibrating method disclosed by the present invention is able to measure only various gray levels of white frames, and utilize transformations between the different color spaces and comparison operation of the chromaticity coordinate value setting the target gamma curves of R, G, B for the target display device according to the color characteristics of the reference display device so as to make the color characteristics of the target display device be substantially equal to the color characteristics of the reference display device. Thus, the color calibrating method of the present invention can efficiently reduce required measuring data and time of calibrating the color characteristics of the target display device.

Abstract: A backset adjustable deadbolt for mounting in a lock cylinder is provided. A deadbolt assembly includes an actuator connected to and movable by the movement of the lock cylinder through the lock cylinder connector. A link bar connects the actuator to the deadbolt at a plurality of attachment points. The deadbolt, lock cylinder connector, actuator, link bar form the deadbolt assembly and are mounted in a housing. A releasable connector extends through the housing. In the engaged position, a releasable connector contacts the actuator to lock the actuator remote end in one of the plurality of attachment points in the link bar. In the disengaged position, the releasable connector releases the actuator remote end from the link bar to allow the link bar move relative to the actuator from one of the plurality of attachment points to a different point for reengagement with the actuator remote end.

Abstract: A backset adjustable deadbolt for mounting in a lock cylinder is provided. A deadbolt assembly includes an actuator connected to and movable by the movement of the lock cylinder through the lock cylinder connector. A link bar connects the actuator to the deadbolt at a plurality of attachment points. The deadbolt, lock cylinder connector, actuator, link bar form the deadbolt assembly and are mounted in a housing. A releasable connector extends through the housing. In the engaged position, a releasable connector contacts the actuator to lock the actuator remote end in one of the plurality of attachment points in the link bar. In the disengaged position, the releasable connector releases the actuator remote end from the link bar to allow the link bar move relative to the actuator from one of the plurality of attachment points to a different point for reengagement with the actuator remote end.

Abstract: An information notification method is applied to a multimedia home platform (MHP) and a digital TV. First, receive at least one first broadcast data transmitted by television broadcaster. Following that, extract at least one effective data including a preset keyword from the first broadcast data in accordance with the preset keyword and an effective time data corresponding to the at least one effective data, and store an effective time corresponding to the effective time data. Afterward, when a preset time related to the at least one effective time is reached, output a notification signal.

Abstract: The invention relates to a solar energy system with spherical lens. The solar energy system comprises: a spherical lens and a solar energy plate. The spherical lens has a first surface and a second surface. The first surface is used for receiving incident light from a light source at any location. The second surface is used for transmitting concentrated light caused by the incident light to a predetermined region. The solar energy plate is mounted on the predetermined region, and is used for receiving the concentrated light and generating electrical energy. According to the invention, the spherical lens can receive the incident light from any location and transmit the concentrated light to the same predetermined region. The solar energy plate on the predetermined region can always receive the concentrated light from the spherical lens. Therefore, the efficiency of the solar energy system of the invention is high.

Abstract: An electric device includes a main body, a supporting crutch and a pivot mechanism connecting the body to the crutch. The body is rotated around the crutch through the pivot mechanism. The pivot mechanism includes first and second bearing shims. The first bearing shim has a limiting salient, which has a first sidewall, a second sidewall and an inclined surface. The inclined surface is tilted from the second sidewall to the first sidewall. The second bearing shim has a sliding salient. When the sliding salient is disposed on the first/second sidewall, the main body is positioned at a first/second position. The sliding salient crosses the first sidewall and slides on the inclined surface to the second sidewall by a first force. The sliding salient crosses the second sidewall and slides on the inclined surface to the first sidewall by a second force larger than the first force.

Abstract: The present invention discloses a high-efficiency light-focusing package structure for a solar chip, which includes: a solar-chip sustaining substrate, a pair of positive-electrode and negative-electrode lead frames, and a covering. The covering may focus sunlight and also has an anti-reflective function to promote sunlight absorption. Further, the package structure for a solar chip of the present invention is low-cost and can be designed and assembled according to the size and shape required by a user.

Abstract: A parallelism adjustment device applicable to nano-imprint lithography has an imprint unit, a carrier unit, a parallelism adjustment mechanism, and a driving source. The imprint unit has a first molding plate and an imprinting mold mounted on the first molding plate. The carrier unit has a second molding plate and a substrate mounted on the second molding plate. The parallelism adjustment mechanism has an enclosed resilient film and a fluid filled therein, and is coupled to at least one of the first and second molding plates. The driving source drives at least one of the imprint unit and the carrier unit to form contact between the mold and the moldable layer. The parallelism adjustment device is pressed via the contact to adjust parallelism for the imprint mold and the substrate and uniformly distributes the pressure between the mold and the substrate, making the molding quality of nano-imprint lithography significantly improved.