Abstract: An active motor warning method includes using a motor drive module to drive a motor, using ambient environment sensors to detect at least one environmental state and transmitting the at least one environmental state to the motor drive module, generating a pulse-width modulation signal including a first message and a second message by the motor drive module, and actively transmitting the pulse-width modulation signal to a host through a frequency generator output pin. The first message of the pulse-width modulation signal includes a rotational speed of the motor. The second message of the pulse-width modulation signal includes at least one operating state of the motor and/or the at least one environmental state.

Abstract: A time division based band pass image generation method includes acquiring a raw image, de-mosaicing the raw image for generating a red channel image, a green channel image, a blue channel image, and an infrared channel image, generating a single-band pass image during a first time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, generating a dual-band pass image during a second time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, and generating an infrared control signal to control infrared light for filling light of the raw image.

Abstract: A universal serial bus (USB) Type-C interface architecture includes a USB plug, a USB socket, a power delivery controller, a first pin, a second pin, a first resistor switch, a second resistance switch, a third resistance switch and a fourth resistance switch. The first pin includes a first end coupled to the USB plug, and a second end coupled to the power delivery controller. The second pin includes a first end coupled to the USB plug, and a second end coupled to the power delivery controller. The first resistance switch controls the connection between a first resistor and the first pin. The second resistor switch controls the connection between a second resistor and the first pin. The third resistor switch controls the connection between a third resistor and the second pin. The fourth resistor switch controls the connection between a fourth resistor and the second pin.

Abstract: A universal serial bus (USB) Type-C interface architecture includes a USB plug, a USB socket, a power delivery controller, a first pin, a second pin, a first resistor switch, a second resistance switch, a third resistance switch and a fourth resistance switch. The first pin includes a first end coupled to the USB plug, and a second end coupled to the power delivery controller. The second pin includes a first end coupled to the USB plug, and a second end coupled to the power delivery controller. The first resistance switch controls the connection between a first resistor and the first pin. The second resistor switch controls the connection between a second resistor and the first pin. The third resistor switch controls the connection between a third resistor and the second pin. The fourth resistor switch controls the connection between a fourth resistor and the second pin.

Abstract: A time division based band pass image generation method includes acquiring a raw image, de-mosaicing the raw image for generating a red channel image, a green channel image, a blue channel image, and an infrared channel image, generating a single-band pass image during a first time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, generating a dual-band pass image during a second time interval according to the red channel image, the green channel image, the blue channel image, and the infrared channel image, and generating an infrared control signal to control infrared light for filling light of the raw image.

Abstract: A motor is coupled to a motor control device including a set of high-side switches, a set of low-side switches, a capacitor and a controller. The set of high-side switches and the set of low-side switches are coupled to the motor. The capacitor is coupled to the set of high-side switches. The controller is coupled to the capacitor, the set of high-side switches and the set of low-side switches. A method of braking the motor includes upon the motor being disconnected from an external power source, the controller receiving a supply voltage from the capacitor, turning on the set of low-side switches, turning off the set of high-side switches, and the controller switching the set of low-side switches according to the supply voltage.

Abstract: Image dewarping includes capturing a source image from a camera, selecting an input row of pixels from the source image, if the input row of pixels comprises a plurality of input pixels in a region of interest in the source image, storing the plurality of input pixels to a memory to generate an input segment of pixels, when a plurality of pixels required to generate an output row of pixels are all stored in the memory, reading from the memory the plurality of pixels corresponding to the output row of pixels, and performing coordinate transformation on the plurality of pixels to generate the output row of pixels, and when coordinate transformation has been completed on the plurality of pixels, releasing from the memory an input segment of pixels of the plurality of input segments of pixels that does not correspond to other output rows of pixels.

Abstract: A motor system includes a brushless direct current motor, a back electromotive force (EMF) circuit, and a control unit. The brushless direct current motor includes first to third windings. The back EMF circuit is coupled to the first to the third windings. The control unit is coupled to the back EMF circuit for floating the first winding, energizing the second winding, and energizing the third winding prior to detect a zero-crossing event. The back EMF detects a duration of a freewheeling period of a back EMF signal of the first winding and a zero-crossing event. The control unit updates respective initial angles of respective driving currents of the first to the third windings according to the duration of a freewheeling period, and performs commutation according to respective updated initial angles of the respective driving currents of the first to the third windings upon detecting the zero-crossing event.

Abstract: An auto white balance adjusting method includes determining a local white pixel area and a global white pixel area, selecting a plurality of pixels of an image according to the local white pixel area for generating a local average color value in a first color space, selecting a plurality of pixels of the image according to the global white pixel area for generating a global average color value in the first color space, converting the local average color value into three primary color gains in a second color space, generating three primary color target gains according to the three primary color gains and a color temperature curve in the second color space, and adjusting a white balance of the image frame by frame to meet the three primary color target gains according to the local average color value and the three primary color gains.

Abstract: An auto white balance adjusting method includes acquiring an image, allocating N windows inside the image according to color information of the image, filtering out M windows from the N windows for generating N-M windows according to feature information of the N windows, grouping the color temperatures of the N-M windows for generating at least one color temperature group according to a standard color temperature curve, setting a first weighting of the at least one color temperature group according to a correlation between the at least one color temperature group and the standard color temperature curve, setting a second weighting of the at least one color temperature group according to spatial information of the at least one color temperature group of the image, and adjusting a white balance of the image according to color information, the first weighting, and the second weighting.

Abstract: A motor system includes a brushless direct current motor, a back electromotive force (EMF) circuit, and a control unit. The brushless direct current motor includes first to third windings. The back EMF circuit is coupled to the first to the third windings. The control unit is coupled to the back EMF circuit for floating the first winding, energizing the second winding, and energizing the third winding prior to detect a zero-crossing event. The back EMF detects a duration of a freewheeling period of a back EMF signal of the first winding and a zero-crossing event. The control unit updates respective initial angles of respective driving currents of the first to the third windings according to the duration of a freewheeling period, and performs commutation according to respective updated initial angles of the respective driving currents of the first to the third windings upon detecting the zero-crossing event.

Abstract: An auto white balance adjusting method includes acquiring an image, allocating N windows inside the image according to color information of the image, filtering out M windows from the N windows for generating N-M windows according to feature information of the N windows, grouping the color temperatures of the N-M windows for generating at least one color temperature group according to a standard color temperature curve, setting a first weighting of the at least one color temperature group according to a correlation between the at least one color temperature group and the standard color temperature curve, setting a second weighting of the at least one color temperature group according to spatial information of the at least one color temperature group of the image, and adjusting a white balance of the image according to color information, the first weighting, and the second weighting.

Abstract: A motor is coupled to a motor control device including a set of high-side switches, a set of low-side switches, a capacitor and a controller. The set of high-side switches and the set of low-side switches are coupled to the motor. The capacitor is coupled to the set of high-side switches. The controller is coupled to the capacitor, the set of high-side switches and the set of low-side switches. A method of braking the motor includes upon the motor being disconnected from an external power source, the controller receiving a supply voltage from the capacitor, turning on the set of low-side switches, turning off the set of high-side switches, and the controller switching the set of low-side switches according to the supply voltage.

Abstract: A super-resolution image reconstruction method includes acquiring a plurality of raw images, positioning the plurality of raw images, acquiring a plurality of motion vectors, setting image coordinates of a super-resolution image, adjusting image coordinates of the super-resolution image according to the plurality of motion vectors for generating a plurality of updated image coordinates, setting a first image range, adjusting coordinates of a first image range according to the plurality of motion vectors for generating a plurality of updated first image ranges, generating a plurality of second image ranges according to each updated first image range, and generating a reconstructed pixel of the super-resolution image at the image coordinates according to a plurality of weightings, the plurality of updated first image ranges, and the plurality of second image ranges.

Abstract: An auto white balance adjusting method includes determining a local white pixel area and a global white pixel area, selecting a plurality of pixels of an image according to the local white pixel area for generating a local average color value in a first color space, selecting a plurality of pixels of the image according to the global white pixel area for generating a global average color value in the first color space, converting the local average color value into three primary color gains in a second color space, generating three primary color target gains according to the three primary color gains and a color temperature curve in the second color space, and adjusting a white balance of the image frame by frame to meet the three primary color target gains according to the local average color value and the three primary color gains.

Abstract: Image dewarping includes capturing a source image from a camera, selecting an input row of pixels from the source image, if the input row of pixels comprises a plurality of input pixels in a region of interest in the source image, storing the plurality of input pixels to a memory to generate an input segment of pixels, when a plurality of pixels required to generate an output row of pixels are all stored in the memory, reading from the memory the plurality of pixels corresponding to the output row of pixels, and performing coordinate transformation on the plurality of pixels to generate the output row of pixels, and when coordinate transformation has been completed on the plurality of pixels, releasing from the memory an input segment of pixels of the plurality of input segments of pixels that does not correspond to other output rows of pixels.

Abstract: A power delivery system includes a power sourcing equipment, a powered device and a transmission cable. When the power sourcing equipment is electrically connected to the powered device via the transmission cable, an over-current detecting circuit in the power sourcing equipment is configured to detect over-current occurrence of the powered device. Meanwhile, the power sourcing equipment is configured to determine the functionality of the over-current detecting circuit based on its specific pin and provide single fault protection when the over-current detecting circuit fails.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A power controller is in use of a power converter whose output voltage can be regulated at a first nominal output voltage or a second nominal output voltage less than the first nominal output voltage. An ON-time controller controls an ON time of a driving signal provided to a power switch according to a compensation signal. A frequency controller controls, based on the compensation signal and a feedback signal, a switching frequency of the driving signal. If the compensation signal has an input waveform and when the output voltage is regulated at the first or second nominal output voltage, the frequency controller provides first or second settling time to stabilize the switching frequency, respectively. The second settling time is longer than the first settling time.

Abstract: An auto white balance adjusting method includes determining a white pixel area according to a standard of a first color space, selecting a plurality of pixels of an image according to the white pixel area, generating an average color value of the plurality of pixels in the first color space, converting the average color value in the first color space to three primary color gains in a second color space, generating three primary color target gains according to the three primary color gains and a color temperature curve, and gradually adjusting a white balance of the image to meet the three primary color target gains according to the average color value in the first color space and the three primary color gains in the second color space. The first color space and the second color space are different.