Abstract: A method for positioning a device includes the steps of: estimating an absolute distance between a reference point and the device at each of a current time point and a number (N) of consecutive previous time points, where N is a integer smaller than n, n is a non-negative integer indicating a total number of time points since the device starting to move, and the current time point is defined as the (n)th time point; estimating a unit vector of a movement direction of the device in each of (n?N+1)th to (n)th time periods; and estimating a coordinate of a location of the device at (n)th time point based on the absolute distance(s), the unit vector(s), and a coordinate of a location of the device at each of the number (N) of the consecutive previous time points.

Abstract: A calibration equipment of a mechanical system includes a light emitter emitting a light beam, a light sensing module, and an operating module. The light sensing module includes a carrier plate, and a plurality of light sensing units located on the carrier plate. The plurality of light sensing units receive the light beam and generate a plurality of image data. The operating module receives the plurality of image data and generates a calibrated kinematic parameter.

Abstract: A method for positioning a device includes the steps of: estimating an absolute distance between a reference point and the device at each of a current time point and a number (N) of consecutive previous time points, where N is a integer smaller than n, n is a non-negative integer indicating a total number of time points since the device starting to move, and the current time point is defined as the (n)th time point; estimating a unit vector of a movement direction of the device in each of (n?N+1)th to (n)th time periods; and estimating a coordinate of a location of the device at (n)th time point based on the absolute distance(s), the unit vector(s), and a coordinate of a location of the device at each of the number (N) of the consecutive previous time points.

Abstract: An automatic guided vehicle includes a vehicle body and a positioning identification module which being furnished in the vehicle body further includes a three-axis magnetic signal sensing unit and a logic operation processing unit. The logic operation processing unit is connected to the three-axis magnetic signal sensing unit by signal transmitted therefrom. A magnetic pointer unit is furnished adjacent to the marching route of the automatic guided vehicle. The three-axis magnetic signal sensing unit senses the magnetic field of magnetic pointer unit and generates a magnetic field information that transmits to the logic operation processing unit.

Abstract: An image and message encoding system, encoding method, decoding system and decoding method are provided. The encoding method includes the following steps. An original image having a first resolution is provided. A message data is provided. The original image and the message data are combined to be an integrated image having a second resolution. The second resolution is greater than the first resolution.

Abstract: An automatic guided vehicle includes a vehicle body and a positioning identification module which being furnished in the vehicle body further includes a three-axis magnetic signal sensing unit and a logic operation processing unit. The logic operation processing unit is connected to the three-axis magnetic signal sensing unit by signal transmitted therefrom. A magnetic pointer unit is furnished adjacent to the marching route of the automatic guided vehicle. The three-axis magnetic signal sensing unit senses the magnetic field of magnetic pointer unit and generates a magnetic field information that transmits to the logic operation processing unit.

Abstract: A pulse radar ranging apparatus and a ranging algorithm thereof are provided. The pulse radar ranging apparatus includes a radio frequency pulse generator, a radio frequency filter, a radio frequency switch and a transceiver aerial. The radio frequency pulse generator generates a pulse signal. The radio frequency filter receives the pulse signal and generates a high-pass filter signal, wherein the high-pass filter signal includes a radio frequency pulse reference signal. The radio frequency switch controls an output of the radio frequency pulse reference signal. The transceiver aerial transmits the radio frequency pulse reference signal. The radio frequency pulse reference signal contacts an object and generates a return signal, and the transceiver aerial receives the return signal. The ranging algorithm processes and analyzes the signals obtained by the pulse radar ranging apparatus, and calculates a distance between pulse radar ranging apparatus and the object by using polynomial interpolation.

Abstract: A system for guiding an automated guided vehicle (AGV) is provided. The system includes a guidance path, an AGV, an image capturing apparatus and an operation unit. The guidance path guides the AGV. The AGV moves on the guidance path and is guided by the guidance path. The AGV moves in a vision guidance region after departing from the guidance path. The image capturing apparatus captures a vision guidance region associated image. The vision guidance region associated image at least includes an image of the vision guidance region. The operation unit determines whether the AGV departs from the guidance path, and calculates position information of the AGV in the vision guidance region. When the AGV departs from the guidance path, the operation unit guides the AGV according to the vision guidance region associated image.

Abstract: In the present invention, an inkjet printing head cleaning device is provided, through droplet image information and feedback control technology in order to drive the nozzle without ejecting, the micro clogging technique is able to avoid the nozzle crimp and reduce the material cost.

Abstract: In the present invention, an inkjet printing head cleaning device is provided, through droplet image information and feedback control technology in order to drive the nozzle without ejecting, the micro clogging technique is able to avoid the nozzle crimp and reduce the material cost.

Abstract: The present invention provides a motor generator, and the motor generator comprises a permeability structure, a bearing, a hollow rotating shaft, a ringed clip and a rotatable guiding structure. The permeability structure comprises a primary permeability unit and a secondary permeability unit wherein the second permeability unit is stacked with the first permeability unit along an axial air-gap to form a symmetrical structure having a hollow shaft. The bearing is disposed inside the hollow shaft of the permeability structure. The hollow rotating shaft is passed through the hollow shaft of the permeability structure and disposed at another side of the bearing with respect to the permeability structure. The ringed clip is used for fixing the bearing and the hollow rotating shaft. The rotatable guiding structure is disposed inside the hollow rotating shaft for providing power source and transmitting signals.

Abstract: A linkage mechanism includes a first joint, a second joint, a first linkage and a second linkage. The two ends of the first linkage are respectively connected to the first joint and the second joint and the two ends of the second linkage are respectively connected to the first joint and the second joint, wherein when the linkage mechanism is subjected to an external force, the vibration phase of the first linkage is different from the vibration phase of the second linkage by ?. In addition, a robot working platform and a design method for robot working platform are disclosed as well.

Abstract: A distance measurement apparatus and a distance measurement method are provided. The apparatus includes a line-shaped laser transmitter, an image sensing device and a processing unit. The line-shaped laser transmitter transmits a line-shaped laser, and the image sensing device senses the line-shaped laser to output a line-shaped laser image. The processing unit receives the line-shaped laser image, and segments the line-shaped laser image into several sub-line-shaped laser images. The processing unit further calculates a vertical position for a laser line in each sub-line-shaped laser image, and outputs each distance information according to the corresponding sub-line-shaped laser image and a transformation relation.

Abstract: In a speech recognition device and a speech recognition method, a key phrase containing at least one key word is received. The speech recognition method comprises steps: receiving a sound source signal of a key word and generating a plurality of audio signals; transforming the audio signals into a plurality of frequency signals; receiving the frequency signals to obtain a space-frequency spectrum and an angular estimation value thereof; receiving the space-frequency spectrum to define and output at least one spatial eigenparameter, and using the angular estimation value and the frequency signals to perform spotting and evaluation and outputting a Bhattacharyya distance; and receiving the spatial eigenparameter and the Bhattacharyya distance and using corresponding thresholds to determine correctness of the key phrase. Thereby this invention robustly achieves high speech recognition rate under very low SNR conditions.

Abstract: A frequency converter includes a comparator, an error computation unit and a calibration unit. The comparator receives a reference voltage signal and a triangle wave signal, and outputs a switching signal. The switching signal is fed back to the error computation unit to calculate an error signal by computing the reference signal and the switching signal. The calibration unit calibrates the triangle wave signal or the reference voltage signal according to the error signal.

Abstract: The present invention discloses a switching driving method used for a driving system. The driving system transforms any type of waveforms to switching signal array by switching strategy modulation, and transmits to switching circuit. Any type of driving waveforms can be generated through high-speed switching the switching circuit. The waveforms can be generated by operating the switching circuit with the switching strategy. The losses of the switch can be reduced, and the modulation ability of driving signal having several waveforms and multi-channels can be improved.

Abstract: An image and message encoding system, encoding method, decoding system and decoding method are provided. The encoding method includes the following steps. An original image having a first resolution is provided. A message data is provided. The original image and the message data are combined to be an integrated image having a second resolution. The second resolution is greater than the first resolution.

Abstract: A frequency converter includes a comparator, an error computation unit and a calibration unit. The comparator receives a reference voltage signal and a triangle wave signal, and outputs a switching signal. The switching signal is fed back to the error computation unit to calculate an error signal by computing the reference signal and the switching signal. The calibration unit calibrates the triangle wave signal or the reference voltage signal according to the error signal.

Abstract: The present invention discloses a switching driving method used for a driving system. The driving system transforms any type of waveforms to switching signal array by switching strategy modulation, and transmits to switching circuit. Any type of driving waveforms can be generated through high-speed switching the switching circuit. The waveforms can be generated by operating the switching circuit with the switching strategy. The losses of the switch can be reduced, and the modulation ability of driving signal having several waveforms and multi-channels can be improved.

Abstract: The present invention provides a spatially pre-processed target-to-jammer ratio weighted filter and a method thereof, which uses two microphones to receive audio signals. The audio signals are divided into a plurality of sinusoidal waves by a fast Fourier transform (FFT) module, and a beamformer uses the sinusoidal waves to generate beamformed signals. A reference generator generates at least one reference signal. The beamformed signals and reference signals are used to work out power spectral densities (PSD), and a target-to-jammer ratio (TJR) is worked out with the power spectral densities. TJR is used to determine whether a sound source exists. According to the determination result, a noise estimator is switched to eliminate noise from the beamformed signals and generate output signals. An inverse fast Fourier transform (IFFT) module recombines the output signals and then outputs the recombined signals.