Abstract: An exemplary method and system for testing light-emitting diodes (LEDs) uses a camera module to take two bulb images of transparent bulbs connected to each of the LEDs. A first bulb image is captured when the LEDs are set in a power-on state, and a second bulb image is captured when the LEDs are set in a power-off state. The method divides each of the two bulb images into small pictures, and calculates an average pixel value of each of the small pictures. After calculating a first difference of each of the small pictures between the average pixel value and a first predetermined value, and a second difference of each of the small pictures between the average pixel value and a second predetermined value, the method ascertains a present state of each of the LEDs by comparing the two differences.

Abstract: A remote control system for a computer includes a transmitting apparatus generating move instructions and key-press instructions. A receiving apparatus is connected to the computer, to receive the move instructions and key-press instructions and send the move instructions and key-press instructions to the computer. The receiving apparatus includes an infrared-house module transmitting an infrared to the transmitting apparatus and an infrared camera module capturing a location and a move state of the transmitting apparatus according to a reflected infrared from the transmitting apparatus and converting the captured location and move state to images and sending the images to the computer. The computer converts the key-press instructions to key-press data and converts the key-press data into key-press actions of a cursor of the computer, and converts the images to movement data and converts the move data into movement actions of the cursor of the computer.

Abstract: An audio signal processing device receives a first voice analog signal from a portable electronic device and a second voice analog signal of noise from outside environment, and converts the first voice analog signal and the second voice analog signal into a first voice digital signal and a second voice digital signal, respectively. The first voice digital signal and the second voice digital signal are then mixed up to obtain a third voice digital signal. The third voice digital signal is converted into a third voice analog signal outputted to an earphone. A regulator is used to adjust signal intensity of the first voice analog signal and the second voice analog signal.

Abstract: A hands-free mobile phone includes a housing and a hands-free unit. The housing defines two outer slide channels and two inner slide channels inside the corresponding outer slide channels. Each outer slide channel includes an access hole, a pivot hole, and a coupling passage communicating the access hole with the pivot hole. Two pivot portions are formed on the hands-free unit. Each pivot portion includes a pivot shaft and a plugging end formed on the pivot shaft. The plugging ends of the pivot portions are respectively inserted in the inner slide channels through the access holes of the corresponding outer slide channels and the pivot shafts thereof are respectively placed in the corresponding access holes and slid into the pivot holes of the outer slide channels through the corresponding coupling passages. Thus, the hands-free unit is pivotably secured to the housing via pivot of the pivot portions.

Abstract: A system for analyzing non-monotonic of signals is provided. The system is configured for receiving a signal and displaying changes of the signal using a waveform curve. The system is configured for analyzing data of the signals and the waveform curve in order to locate peak points on the waveform curve. The system is also configured for storing the signal data and data generated during the analyzing process. A related method is also provided.

Abstract: An interactive input method of an electronic system displays at least two images selected from different image groups on an image input field and receives one of the at least two images, at least one next input field or a confirm input field. Each of the at least two images of the image input field is stored in turn. A next image input field and at least two images of the next image input field selected from the at least two different image groups are generated by selecting the at least one next input field. The next image input field stops generating by selecting the confirm input field.

Abstract: An electronic device having a temperature sensor is provided. The temperature sensor detects information of a touch operation from an object on a surface of the temperature sensor, determines if the touch operation is valid by determining if the detected information meet preset standards, and executes a corresponding command to activate an action of the electronic device, in response to a determination that the touch operation is valid.

Abstract: A system and method for searching for a contact by a handheld device includes creating a face database, the face database storing face images, and association of the face images with contact information, selecting an image from a photo stored in the handheld device, locating a face in the selected image, comparing the located face with face images stored in the face database, and determining if a matched face image is found in the face database. The method further includes listing contact information associated with the matched face image, the information comprising a phone number of the contact, creating an association between the located face and a user-selected contact if no matched face image is found, and storing the located face and the association in the face database.

Abstract: A system for testing audio of a motherboard includes a recording fixture and a computer. The recording fixture includes a recording device and a soundproof device. The soundproof device is configured for soundproofing the audio device and the recording device from environmental noise. The computer includes an output/input module, a comparing module and a displaying module. The output/input module is configured for outputting a first sound signal generated by the computer to the audio device to cause the audio device to generate a sound and receiving the sound generated by the audio device and recorded by the recording device from the recording device and transforming the sound into a second sound signal. The comparing module is configured for comparing the first and second sound signals. The displaying module is configured for displaying the compared result.

Abstract: A hands-free mobile phone includes a housing and a hands-free unit. The housing defines two outer slide channels and two inner slide channels inside the corresponding outer slide channels. Each outer slide channel includes an access hole, a pivot hole, and a coupling passage communicating the access hole with the pivot hole. Two pivot portions are formed on the hands-free unit. Each pivot portion includes a pivot shaft and a plugging end formed on the pivot shaft. The plugging ends of the pivot portions are respectively inserted in the inner slide channels through the access holes of the corresponding outer slide channels and the pivot shafts thereof are respectively placed in the corresponding access holes and slid into the pivot holes of the outer slide channels through the corresponding coupling passages. Thus, the hands-free unit is pivotably secured to the housing via pivot of the pivot portions.

Abstract: A system for analyzing non-monotonic of signals is provided. The system is configured for receiving a signal and displaying changes of the signal using a waveform curve. The system is configured for analyzing data of the signals and the waveform curve in order to locate peak points on the waveform curve. The system is also configured for storing the signal data and data generated during the analyzing process. A related method is also provided.

Abstract: An exemplary method for testing light-emitting diodes (LEDs) on a motherboard is provided. The method includes: using a camera module to take a first bulb image of a corresponding number of transparent bulbs which are connected to each of the LEDs when the LEDs are set in a power-on state and taking a second bulb image of the transparent bulbs when the LEDs are set in a power-off state; processing the two bulb images and dividing each of the two bulb images into small pictures; calculating an average pixel value of each of the small pictures, calculating a first difference of each of the small pictures between the average pixel value and a first predetermined value, and calculating a second difference of each of the small pictures between the average pixel value and a second predetermined value; ascertaining a present state of each of the LEDs by comparing the two differences; obtaining test results by comparing the present state of the LEDs with the set state; and reporting the test results.

Abstract: An exemplary system for testing light-emitting diodes (LEDs) on a motherboard is provided. The system typically includes: an insulating plate covered on the motherboard, configured with optical fibers for inducing beams sourced from the LEDs and transmitting the beams to a circuit board; the circuit board includes at least one photoresistor, configured for sensing the beams to obtain influence values; a computer configured for detecting whether the influence values are within a photosensitive range when the LEDs are powered on, for detecting whether resistance values of all the given number of at least one photoresistor are equal to a dark resistance when the LEDs are powered off and for reporting test results. A related method is also provided.

Abstract: A method for updating factory default settings and boot loaders in an embedded system is disclosed. The method includes the steps of: recording factory default settings to each partition of a flash memory; installing the flash memory in the embedded system and doing function tests; generating a new boot loader comprising NVRAM variables; modifying a parameter of the NVRAM variables; and updating the new boot loader to the flash memory. The invention can be used to update boot loaders or a firmware, and generate new boot loaders based on documents modified by a user.