Abstract: A system for hiding secret data in halftone images is disclosed. The system includes an image input module, a halftoning processing module and an image output module. The image input module reads an original image data and a secret image data. The halftoning processing module is coupled to the image input module and receives the original image data and the secret image data, performs a first error diffusion process to the original image to generate a first halftone image and performs a second error diffusion process to the original image data and the secret image data to generate a second halftone image. The image output image module is coupled to the halftoning processing module and outputs the first halftone image and the second halftone image, wherein the second error diffusion process comprises adding or subtracting a variable noise strength to or from each pixel of the secret image.

Abstract: An auxiliary satellite positioning system is applied to a first satellite positioning apparatus. The auxiliary positioning system includes a detection module, a transmission interface and a positioning module. A second satellite positioning module having a satellite data can be detected by the detection module via a wireless transmission protocol. The satellite data can be transmitted by the transmission interface to the first satellite positioning module from the second satellite positioning module. The satellite data can be used by the positioning module to implement a satellite positioning action.

Abstract: The present invention discloses an image capturing device and an image synthesis method thereof. The image capturing device comprises an image capturing module, an exposure module, and a processing module. The image capturing module captures a high bit-depth scene image corresponding to a scene. The exposure module meters the light of the scene to generate a plurality of histograms. The processing module calculates a plurality of discrete values of different exposure conditions of the high bit-depth scene image based on the plurality of histograms, processes the high bit-depth scene image to generate at least two low bit-depth temporary images in different brightness conditions based on at least two highest discrete values, and synthesizes the at least two low bit-depth temporary images in different brightness conditions to generate a high dynamic range image.

Abstract: A method for efficiently charging a battery. The method includes producing a first signal having a voltage level dependent on the voltage of the battery, comparing the voltage level of the first signal with a settable voltage representative of a maximum battery charging current, and producing a second signal representative of a charging current to be provided to the battery, the second signal having a voltage level selected to be the lower voltage level between the first signal and the settable voltage.

Abstract: The present invention provides an eyeglass frame/one-piece lens with a soft sleeving element. The soft sleeving element is provided with an elongated groove disposed inner the upper portion, and at least an inlaid flange is disposed in the elongated groove so as to form at least two spaced sections. At least a through hole and at least a curved slot are disposed in each side of the soft sleeving element, and a distal end is disposed at the bottom of each curved slot. The eyeglass frame/one-piece lens is provided with at least a pair of protrudent extensions at each side, at least a lower catching hollow is disposed at the bottom of each lower protrudent extension, and a catching concavity is formed on the upper rim of the eyeglass frame/one-piece lens. Each pair of protrudent extensions are inserted through the through hole and the curved slot, each distal end is caught and firmly secured in each lower catching hollow, and the inlaid flange is caught in the catching concavity.

Abstract: A compressor leakage detector includes a water tank, an elevator platform, a control panel, and a pressure testing unit. The elevator platform is disposed in the water tank to rise and drop vertically. The operating panel of the control panel has a human-machine interface, indicators, and pressure gauges. The pressure testing unit in the control panel uses an intake pipe to connect to several branch pipes that in turn connect to the compressors in the water tank. Each of the branch pipes connects in series to at least one intake EM valve and at least one exhaust EM valve. A pressure sensor is interposed between the intake EM valve and the corresponding compressor.

Abstract: An air-operated device for better sleep includes a pad whose inside has an interlayer composed of two sheets stacked together. The top surface of the pad has an accommodating cavity in communications with the interlayer. The pad has an air vent. Two airbags are disposed adjacently in the accommodating cavity. The airbags are in touch with the interlayer by the adjacent side. The airbags are connected to the air vent of the pad via an air-transporting pipe, respectively. An action pad is disposed correspondingly in the accommodating cavity and depresses the two airbags. A controller is connected to the air vent of the pad to inflate and deflate the airbags. When the airbags are inflated, the action pad is pushed by the air bags to sway upward.

Abstract: An apparatus for processing spread spectrum signals is disclosed. The apparatus includes an intermediate frequency (IF) signal preprocessing unit, which includes a first set of multiply-accumulator (MAC) units and a second set of MAC units. The IF signal preprocessing unit generates a first and a second set of data streams using a digitized signal and a first and second local reference signals respectively. Each data stream is generated every predetermined time period, and each data stream includes pre-integration results generated at a predetermined rate.

Abstract: An integrated positioning apparatus includes a processing module, a satellite positioning module, an inertial positioning module, a transmission interface and a switching module. The processing module is utilized for executing a navigation program. The satellite positioning module functions to provide satellite positioning information. The inertial positioning module is used for generating inertial positioning information. The switching module is connected between the processing module and the transmission interface for receiving a control signal furnished by the processing module and is selectively switched to a first status or a second status based on the control signal. While in the first status, the switching module drives the transmission interface to connect to the satellite positioning module so as to transmit the satellite positioning information to the processing module for navigating.

Abstract: An asynchronous FIFO interface having a readout clock asynchronous with a write clock is provided. The asynchronous FIFO interface includes a FIFO buffer, a clock controller, a reference source and a signal source. The FIFO buffer receives a digital signal from an ADC according to the write clock and outputs a digital signal to a processor according to the readout clock. The clock controller outputs a clock control signal according to the amount of data stored in the FIFO buffer. The reference source provides an oscillation frequency. The signal source divides the oscillation frequency by a first integer divisor to generate a reference frequency, divides the readout clock by a second integer divisor to generate an input frequency, and outputs a control signal by comparing the reference frequency with the input frequency.

Abstract: A battery circuit including a first battery cell with a first parameter having a first value and a second battery cell with a second parameter having a second value. The second battery cell is coupled to the first battery cell in series. The battery circuit further includes a magnetic device operable for storing energy transferred from the first battery cell via a first winding coupled to the first battery cell and for releasing the stored energy to the second battery cell via a second winding coupled to the second battery cell if the first value of the first parameter is greater than the second value of the second parameter.

Abstract: A processing system including a first processing module and a second processing module is disclosed. The first processing module transforms and amplifies a grounded signal to generate a first processed signal and transforms and amplifies a predetermined signal to generate a second processed signal. The second processing module transforms the first processed signal to a first digital code according to a first reference voltage group and transforms the second processed signal to a second digital code according to a second reference voltage group. The second processing module adjusts a third reference voltage group according to the first and the second digital codes, and during a normal mode, the second processing module generates a third digital code according to the adjusted third voltage group.

Abstract: A flash memory apparatus is provided. In one embodiment, the flash memory apparatus with a plurality of operation states is coupled to a host and includes a controller having an engine and a register array. A state machine logic circuit of the engine is provided for transition of the operation states and the register array provides state transition information. When a command is received from the host, the engine obtains the state transition information from the register array according to a first operation state and determines whether the valid command is one of a plurality of valid commands corresponding to the first operation state. The state machine logic circuit determines transition to the operation states according to the state transition information. The transition of the first operation state to the second operation state is performed in response to the valid command.

Abstract: The invention is discloses a camera lens calibration system and method thereof, which comprise a calibration platform, the calibration platform comprise a calibration structure. A calibration camera lens to be calibrated is placed on the calibration platform. An image testing module is provided for capturing a target pattern from a target pattern display through the calibration camera lens to be calibrated for getting an image pattern. The image testing module provides a contrast parameter computation for calculating the contrast parameter of image pattern and showing results on a display.

Abstract: A bicycle hub comprises: a housing, a driving base in the housing, and an engaging unit for the driving base to drive the housing in a single direction. The engaging unit consists of several claws and elastic elements surrounding thereon. Each of the elastic elements is an arc hook and urges against the corresponding claw. The claws thus enable the driving base to drive the housing.

Abstract: A network attack detection device is provided, including a spatial coordinate database for storing spatial coordinate data; a standard time zone database for storing standard time zone data; a domain name system packet collector for collecting a domain name system packet; a spatial snapshot feature extractor for extracting internet protocol address corresponding to the domain name system packet according to the domain name system packet, and generating spatial feature data corresponding to the internet protocol address according to the internet protocol address, the spatial coordinate data and the standard time zone data; and an attack detector for determining whether the domain name system packet is an attack according to the spatial feature data and a spatial snapshot detection model, and when determining that the domain name system packet is an attack, sending a warning to indicate the attack.

Abstract: A charge domain filter with controllable transfer function is disclosed. The charge domain filter has a plurality of switched-capacitor networks, a switching device and a current adder. The switched-capacitor networks are interleaving controlled, and each have an input terminal and an output terminal, and the input terminals of all of the switched-capacitor networks are connected together to be coupled to an input signal. The switching device is designed for transfer function control, and is operated according to a switch control signal. The switching device determines connections between the output terminals of the switched-capacitor networks and how the output terminals of the switched-capacitor networks are coupled to the current adder and thereby generates at least one current adder input. The at least one current adder input is received by the current adder, and the current adder outputs an output signal accordingly.

Abstract: A multi-language interfaces system includes a storage unit, a processing unit, and a language switch unit; the storage unit stores an executable code containing a variable code and multiple language packs; the processing unit is electrically connected for transmission to the storage unit to execute the executable codes; and the language switch unit is respectively electrically connected for transmission to the storage unit and the processing unit to provide a signal to the processing unit where the variable code is converted into one of those language packs.

Abstract: An image taking optical system, sequentially arranged from an object side to an image side along an optical axis comprising: a front lens group, a stop and a rear lens group. The front lens group comprises at least a meniscus front-group first lens element with a convex object-side surface. The rear lens group comprises at least three lens elements. Through the means of field adjustments that result in desirable distorted images, the image taking optical system may shorten the total length while enhancing the ability to create a larger field of view for panorama usages in compact cameras and mobile phones.

Abstract: A driving method for a display including a source driver and at least one pixel is disclosed. The source driver is activated to provide a first data signal to the pixel. The first data signal includes a first pulse. The source driver is activated to provide a second data signal to the pixel. The second data signal includes a second pulse. The width of the first pulse is different from the width of the second pulse and a gray level is composed of the first and the second pulses.