Abstract: An ICI cancellation iterative receiver and an ICI cancellation method in the wireless communication system is provided. In order to eliminate the Inter-carrier-interference (ICI) due to phase noise, an adaptive ICI cancellation scheme based on the wireless communication system is presented. In order to correct the contaminated preamble symbols due to phase noise, a first LMS adaptive filter in the receiver cancels the ICI. In the following data symbols of a frame, joint of the turbo decoder and channel estimation is provided. The complexity of the joint algorithm is analyzed and the algorithm can be implemented in the wireless communication system. The simulation results show that the performance can be improved dramatically.

Abstract: A method, system and computer program product for filtering noise from an image is disclosed. The image includes a plurality of pixels. A category for each of the plurality of pixels in the image is determined. Thereafter, a filter value for each of the plurality of pixels is determined based on the category of each of the plurality of pixel. Finally each of the plurality of pixels is modified based on the filter value of each of the plurality of pixels.

Abstract: A system and method for sealing around openings in a telephone handset casing in which externally facing components are positioned. An exemplary method comprises applying a bead of liquid sealant around the opening in a telephone handset casing, allowing the bead to partially cure to form a skin yet still having a malleable consistency, and placing the externally facing component against the bead to deform the bead in conformance with the surface of the component, to provide a close seal between the casing and the component.

Abstract: The present invention relates to a method and device for estimating a timing error and a frequency offset in the MIMO mobile communication system. In a system including a plurality of transmit antennas and a plurality of receive antennas, a predetermined preamble symbol is inserted into a frame to be transmitted by a transmitting device, and pseudo noise is multiplied to the preamble symbol, and result signal is transmitted through each transmit antenna. A receiving device receives the signal through each receive antenna, extracts a preamble symbol from the OFDM symbol, and multiplies local pseudo noise that corresponds to the pseudo noise used by the transmitting device and is shifted by the extracted preamble symbol. A timing error is estimated and compensated according to the correlation of the pseudo noise of the transmitting device and the local pseudo noise of the receiving device. A frequency offset is estimated and compensated according to the phase difference between the preamble symbols.

Abstract: A system and method for sealing around openings in a telephone handset casing in which externally facing components are positioned. An exemplary method comprises applying a bead of liquid sealant around the opening in a telephone handset casing, allowing the bead to partially cure to form a skin yet still having a malleable consistency, and placing the externally facing component against the bead to deform the bead in conformance with the surface of the component, to provide a close seal between the casing and the component.

Abstract: A method, system and computer program product for the selection of reference pictures and mode decision during the motion estimation of a video sequence is disclosed. The video sequence includes a plurality of video frames. Each of the video frames includes a plurality of macroblocks. A full-pixel search is performed for each of the video frames, to calculate one or more full-pel rate distortion costs. Based on the one or more rate-distortion costs, one of the one or more modes is selected. Further, interpolation is performed for each of the video frames. Thereafter, a sub-pixel search is performed for each of the video frames, to calculate the one or more sub-pel rate distortion costs. Finally, a reference video frame is selected, based on the one or more sub-pel rate distortion costs.

Abstract: A method of processing a video sequence is provided. The video sequence includes a plurality of video frames, wherein each of the plurality of video frames includes a plurality of macroblocks. Further, each of the plurality of macroblocks includes a plurality of pixels. The method includes determining energy values for pixels in a first macroblock and a second macroblock, determining a respective attenuation factor for each of the plurality of pixels in the first macroblock and determining a modified intensity value for each of the plurality of pixels in the first macroblock based on the respective attenuation factor for each of the plurality of pixels in the first macroblock, a respective intensity value of each of the plurality of pixels in the first macroblock and a mean intensity value of the first macroblock.

Abstract: A method for detecting a skip mode during encoding of a video sequence is provided. The video sequence includes a plurality of video frames, wherein each of the plurality of video frames includes a plurality of macroblocks. Each of the plurality of macroblocks includes a plurality of pixels. The method includes calculating a motion vector for a macroblock selected from the plurality of macroblocks, comparing the calculated motion vector of the macroblock with a predetermined skip motion vector of the macroblock, calculating a sum of absolute differences value for the skip motion vector of the macroblock, and selecting a skip mode for the macroblock. The skip mode is selected based on the calculated sum of absolute differences value and a predetermined threshold, wherein the predetermined threshold is based on a quantization parameter value of the macroblock.

Abstract: A laser level with temperature control device (2) and the temperature control method thereof are disclosed. The temperature control device includes a thermal insulation chamber (22), a thermoelectric cooler (25), a control unit (21), and first and second temperature sensors (23, 24). The second temperature sensor is received in the thermal insulation chamber together with a tilt sensor (12). The control unit controls operation of the thermoelectric cooler according to the external and internal temperature signals respectively output by the first and second temperature sensors, so as to adjust the internal temperature inside the thermal insulation chamber to be a calibration temperature point close to the external temperature. Accordingly, the temperature drift problem can be addressed, and the working temperature of the tilt sensor can be maintained in a stable range. Further, the acceptable ambient temperature range within which the tilt sensor works can be expanded.

Abstract: The present invention relates to a method for estimating a timing error and a frequency offset in a high-speed portable Internet system and a method thereof. A predetermined preamble symbol is added to an OFDM frame to be transmitted by a transmitter according to an exemplary embodiment of the present invention, an IFFT operation is performed, and then a pseudo noise is multiplexed by the preamble symbol to estimate the timing error and the frequency offset. A receiver receives an OFDM symbol, extracts the preamble symbol from the OFDM symbol, and multiplexes the extracted preamble symbol by a local pseudo noise, which is equal to the pseudo noise used by the transmitter but is shifted.

Abstract: The present invention relates to a method and device for estimating a timing error and a frequency offset in the MIMO mobile communication system. In a system including a plurality of transmit antennas and a plurality of receive antennas, a predetermined preamble symbol is inserted into a frame to be transmitted by a transmitting device, and pseudo noise is multiplied to the preamble symbol, and result signal is transmitted through each transmit antenna. A receiving device receives the signal through each receive antenna, extracts a preamble symbol from the OFDM symbol, and multiplies local pseudo noise that corresponds to the pseudo noise used by the transmitting device and is shifted by the extracted preamble symbol. A timing error is estimated and compensated according to the correlation of the pseudo noise of the transmitting device and the local pseudo noise of the receiving device. A frequency offset is estimated and compensated according to the phase difference between the preamble symbols.

Abstract: An ICI cancellation iterative receiver and an ICI cancellation method in the wireless communication system is provided. In order to eliminate the Inter-carrier-interference (ICI) due to phase noise, an adaptive ICI cancellation scheme based on the wireless communication system is presented. In order to correct the contaminated preamble symbols due to phase noise, a first LMS adaptive filter in the receiver cancels the ICI. In the following data symbols of a frame, joint of the turbo decoder and channel estimation is provided. The complexity of the joint algorithm is analyzed and the algorithm can be implemented in the wireless communication system. The simulation results show that the performance can be improved dramatically.

Abstract: The present invention discloses a laser tilt apparatus and the method thereof. The present invention comprises an input device, a tilt sensor, a motor, a microcontroller unit, and at least a laser module. The input device is used to input a tilt value. The tilt sensor supplies a tilt signal to represent the levelness of the laser tilt apparatus. The motor, electrically connected to the tilt sensor, adjusts the levelness of the laser tilt apparatus. The microcontroller unit samples the tilt signal to judge the levelness of the laser tilt apparatus. When leveling, the microcontroller unit drives the motor to adjust the tilt apparatus until the tilt signal matches the tilt value. After adjusting, the power supplied to the tilt sensor and the motor is suspended. The laser module is used to transmit laser light.

Abstract: A laser level with temperature control device (2) and the temperature control method thereof are disclosed. The temperature control device includes a thermal insulation chamber (22), a thermoelectric cooler (25), a control unit (21), and first and second temperature sensors (23, 24). The second temperature sensor is received in the thermal insulation chamber together with a tilt sensor (12). The control unit controls operation of the thermoelectric cooler according to the external and internal temperature signals respectively output by the first and second temperature sensors, so as to adjust the internal temperature inside the thermal insulation chamber to be a calibration temperature point close to the external temperature. Accordingly, the temperature drift problem can be addressed, and the working temperature of the tilt sensor can be maintained in a stable range. Further, the acceptable ambient temperature range within which the tilt sensor works can be expanded.

Abstract: The present invention provides an adjusting method of a tilt meter. First, multiple holding signals of the same direction output from a tilt sensor, respectively, are differentiated to obtain at least a tilt signal. Then, a first judging step is performed to determine whether the tilt signal is in a predetermined range or not and a rough tuning step is executed to limit the voltage of the tilt signal in the predetermined range. Then, the voltage of the tilt signal in the predetermined range is amplified by a predetermined multiple. Afterwards, a second judging step is performed to determine whether the tilt signal after amplification is equal to a level voltage or not and a delicate tuning step is proceeded to adjust the voltage of the tilt signal to become equal to the level voltage.

Abstract: The present invention discloses a laser tilt apparatus and the method thereof. The present invention comprises an input device, a tilt sensor, a motor, a microcontroller unit, and at least a laser module. The input device is used to input a tilt value. The tilt sensor supplies a tilt signal to represent the levelness of the laser tilt apparatus. The motor, electrically connected to the tilt sensor, adjusts the levelness of the laser tilt apparatus. The microcontroller unit samples the tilt signal to judge the levelness of the laser tilt apparatus. When leveling, the microcontroller unit drives the motor to adjust the tilt apparatus until the tilt signal matches the tilt value. After adjusting, the power supplied to the tilt sensor and the motor is suspended. The laser module is used to transmit laser light.

Abstract: An adjusting method of a tilt meter is described. The adjusting method of the tilt meter comprises the following steps. First, a plurality of level measuring signals is input to the tilt sensor, and the tilt sensor outputs a series of output signals. Then, the output signals are divided into a plurality of holding signals. Next, the holding signals of the same direction are differentiated to obtain at least a tilt signal and a first judging step is then proceeded to limit the tilt signal to within a predetermined range. Then, the tilt signal in the predetermined range is amplified, and a second judging step is proceeded to make the tilt signal equal to a predetermined level voltage. When the tilt signal equals the predetermined level voltage, the tilt meter is level.