Abstract: An exemplary light guide plate configured for guiding light beams from a light source in order to uniformly illuminate a liquid crystal panel, includes an integrated transparent base plate having a bottom surface, and an light emitting top surface. A prism array is formed on the emitting surface, and a plurality of particles is evenly embedded in a layer in the middle of the light guide plate, the layer is in parallel with the bottom surface and the emitting surface. A backlight module including the light guide plate is also disclosed.

Abstract: An area light source includes a bottom substrate, a first undulated electrode, a dielectric, a light-emitting layer, a second undulated electrode, and a top substrate stacked in that order. The first and second undulated electrodes have the same shape, configured for receiving a voltage from a power source such that electrons move between the first and second undulated electrodes and strike the dielectric, which results in the light-emitting layer emitting light.

Abstract: A rack apparatus (100) includes a frame (10), a plurality of supporting members (106), and a plurality of retaining members (12). The supporting members are arranged/mounted on/to the frame. The retaining members are mounted on the supporting members. Each retaining member includes a fixing piece (120) and two supporting pieces (122, 124). The fixing piece has a notched mounting portion. The two supporting pieces are respectively positioned at an opposite side of the fixing piece. Each supporting piece forms a retaining portion (i.e., a through hole therein). The notched mounting portion and the retaining portions together help retain a workpiece within a given retaining member.

Abstract: An electric connector assembly includes a plug includes a plurality of pins, at least one fastening member detachably mounted on the plug, and a socket comprising a plurality of slots. Each fastening member includes a magnetic shaft. At least one locking sleeve defining a hole with a magnetic wall is arranged beside the slots. The pins of the plug are inserted into the corresponding slots of the socket. Magnetic attraction between the fastening member and the locking sleeve firmly retains the shaft in the locking hole to hold the plug in the socket.

Abstract: An exemplary light guide plate includes a base plate having a bottom surface, an emitting surface opposite to the bottom surface, and a plurality of side surfaces being perpendicular to and connected between the emitting surface and the bottom surface. A reflecting film with an opening covers the side surfaces of the light guide plate, and faces a light source to enable light beams from the light source enter the light guide plate. The light guide plate with the reflecting film increases efficiency in the utilization of light beams. A backlight module including the light guide plate is also disclosed.

Abstract: A backlight module includes a housing, a light source, and a light guide plate. The housing includes a bottom wall, a side wall extending perpendicularly from edges of the bottom wall, and a reflecting film formed on an inner surface of the bottom wall. The housing accommodates the light source and the light guide plate. The light guide plate receives light beams from the light source, and diffuses the light beams to emit from an upper surface of the light guide plate. The reflecting film reflects the light beams, which leak from a bottom surface of the light guide plate, to emit from the upper surface of the light guide plate.

Abstract: An exemplary system for verifying DPI values of computer mice is disclosed. The system comprises: a stepper motor connected with a horizontal servo axle and controlling the horizontal servo axle to perform back and forth movements which drives the computer mice to move in a straight line back and forth; a computer configured for receiving measurement parameters, for sending move instructions to the stepper motor, for recording initial coordinates of a computer pointer of the computer mice and current coordinates of the mouse pointers of the computer mice, and calculating DPI values according to the initial coordinates and the current coordinates; and a servo controller electrically connected between the computer and the stepper motor for sending impulse control signals to control operations of the stepper motor. A related method is also disclosed.

Abstract: A method for playback test includes the steps of: controlling an audio analyzer (3) connected to a host computer (2) to generate digital audio signals at different sampling frequencies, different sampling bit width and different signal amplitude, and controlling the audio analyzer to output the digital audio signals to a client computer (5) connected to the audio analyzer; transmitting the digital audio signals to a sound card (7) inside the client computer without data loss; converting the digital audio signals into analog audio signals, and transmitting the analog audio signals to an analog signal input interface (311) of the audio analyzer; and controlling the audio analyzer to test and analyze the analog audio signals, and producing a test result. A related apparatus is also provided.

Abstract: A universal serial bus (USB) keyboard includes a keyboard main body and a USB keyboard wire. The keyboard main body includes a USB interface and a plurality of keys for inputting data. The USB keyboard wire includes a first USB connector configured for connecting to a USB interface of a computer, and a second USB connector configured for connecting to the USB interface of the keyboard main body to thereby communicate the keyboard main body with the computer.

Abstract: A method for testing a burner includes the steps of: providing a rewriter (RW) disk (4) in good burning condition, and inserting the RW disk into a test burner (3) connected to a computer (1); selecting a burner type for the burner; designating a source file to be burned, and setting a counter J=0, a loop time N and a maximum time of fail test M; erasing all data on the RW disk; burning the source file onto the RW disk; determining whether the source file is successfully burned to the RW disk; executing J=J+1 if the source file is successfully burned to the RW disk; repeating the erasing step, the burning step and the determining step, and counting a time of successfully burned process by the counter J, until J=N?M+1 which denotes that the burner is in good burning condition. A related method for testing a RW disk is also provided.

Abstract: A voltage test circuit for testing a computer power supply includes a voltage input unit configured for receiving voltages from the computer power supply, a voltage output unit configured for outputting the voltages to a plurality of electrical loads, a test unit, a switch control unit, and a capacitive load module. The test unit is connected between the voltage input unit and the voltage output unit for testing output ripple and noise of the voltages. The capacitive load module includes a plurality of capacitive loads. The switch control unit is connected between the voltage input unit and the capacitive module for selecting a suitable capacitive load according to the computer power supply.

Abstract: A backlight module includes a light source and a light guide plate. The light guide plate includes a base plate and a reflecting film. The base plate has an upper surface on which a plurality of protrusions is formed, a curved bottom surface opposite to the upper surface, and a housing defined therein. The light source is accommodated in the housing. The reflecting film is plated on the curved bottom surface, for reflecting the light beams reaching the curved bottom surface to emit from the upper surface. The plurality of protrusions diffuses light beams.

Abstract: A system for the context-based for the context-based encoding of an input signal includes a domain transform module and a context-based coding module. The domain transform module is operable to convert the input signal into a sequence of transform coefficients c[i]. The context-based coding module includes a bit-plane scanning module, and context modeling module, and a statistical encoding module. The bit-plane scanning module is operable to produce a bit-plane symbol bps[i,bp] for each transform coefficient c[i] and each bit-plane [bp]. The context modeling module is operable to assign one or more context values to each of the received bit plane symbols bps[i,bp]. The statistical coding module is operable to code each of the bit plane symbols bps[i,bp] as a function of one or more of the corresponding context values to produce a context-based encoded symbol stream.

Abstract: A backlight module includes a light source and a light guide plate. The light guide plate has a side surface adjacent the light source for entry of light beams from the light source, a bottom surface perpendicular to the side surface, a plurality of identical protrusions formed on the bottom surface, and a reflecting film plated on the bottom surface and the plurality of identical protrusions. The identical protrusions diffuse the light from the light source out of an upper surface of the light guide plate, which is opposite to the bottom surface. The reflecting film reflects the light leaking from the bottom surface back to the light guide plate.

Abstract: A system for testing power supply performance is provided. The system includes a power supply having a plurality of outputs for outputting voltages, a plurality of display units corresponding to the plurality of outputs, for reflecting performance of the power supply, a plurality of resistance-matching selectors corresponding to the plurality of outputs, for supplying selective resistance, a voltage adjustable direct current source, and a selective switch. The display units are connected between first terminals of the outputs and the resistance-matching selectors, respectively. The resistance-matching selectors are in turn connected to ground. The voltage adjustable direct current source has a pole selectively connected to a second terminal of one of the outputs via the selective switch, and another pole grounded.

Abstract: A wire harness projection guidance system comprises a support stand for supporting a wire harness board used to construct a wire harness. A projector is mounted to the support stand for projecting an image onto a wire harness board supported on the support stand. A memory stores data representing wire route for each of a plurality of individual wires in a wire harness. A programmed processing system is operatively coupled to the memory and the projector for generating a series of images to be projected by the projector. Each image in the series represents one of the stored wire routes for an associated individual wire.

Abstract: A method for transforming a digital signal from the time domain into the frequency domain and vice versa using a transformation function comprising a transformation matrix, the digital signal comprising data symbols which are grouped into a plurality of blocks, each block comprising a predefined number of the data symbols. The method includes the process of transforming two blocks of the digital signal by one transforming element, wherein the transforming element corresponds to a block-diagonal matrix comprising two sub matrices, wherein each sub-matrix comprises the transformation matrix and the transforming element comprises a plurality of lifting stages and wherein each lifting stage comprises the processing of blocks of the digital signal by an auxiliary transformation and by a rounding unit.

Abstract: A scalable coder having a grid motion estimation and compensation module (110), a motion compensation temporal filtering module (105), a scalable coding module (115), a discrete transformation module (120), and a packetization module (135). The grid-motion estimation and compensation module (110) outputs a scalable motion vector from the source video data, supplied resolution and bit rate parameters. The motion compensation temporal filtering module (105) generates, from the source video data and the scalable motion vector, a residual image corresponding to the difference between the present and previous image frames. The scalable coding module (115) is coupled to receive and encode the scalable motion vector. The discrete transformation module (120) is configured to receive and domain transform the supplied video to a sequence of coefficients.

Abstract: A solenoid test device includes a clock circuit, a control circuit, and an output port configured for coupling to two ends of a solenoid. The clock circuit generates a clock signal and sends it to the control circuit. The control circuit periodically and alternately couples one of the two ends of the solenoid to ground via the output port under the control of the clock signal. The solenoid test device is used to generate a periodic control signal to test service life and stability of solenoids.

Abstract: A method for encoding a digital signal into a scalable bitstream comprising quantizing the digital signal, and encoding the quantized signal to form a core-layer bitstream, performing an error mapping based on the digital signal and the core-layer bitstream to remove information that has been encoded into the core-layer bitstream, resulting in an error signal, bit-plane coding the error signal based on perceptual information of the digital signal, resulting in an enhancement-layer bitstream, wherein the perceptual information of the digital signal is determined using a perceptual model, and multiplexing the core-layer bitstream and the enhancement-layer bitstream, thereby generating the scalable bitstream.