Abstract: A device for controlling floating of a motor includes a speed calculator configured to determine whether a speed of the motor is equal to or higher than a set speed; and a detector configured to measure a back electromotive force by floating a phase voltage of the motor when the speed of the motor is equal to or higher than the set speed, and determine whether a zero-cross point of the back electromotive force and a zero-cross point of a phase current of the motor coincide with each other, in which the speed calculator is configured to release the floating of the phase voltage of the motor and drive the motor when the zero-cross point of the back electromotive force and the zero-cross point of the phase current of the motor coincide with each other. Therefore, there are scarcely torque ripples and noise is low.

Abstract: A device for measuring a back electromotive force of a motor includes a phase voltage floating part that floats a phase voltage of the motor; a back electromotive force measurement part that measures a back electromotive force corresponding to a pulse signal generated by floating the phase voltage; a back electromotive force range determination part that determines whether the back electromotive force is within a set range, and when the back electromotive force is within the set range, determines whether the back electromotive force is consecutively maintained within the set range for a set number of pulse signals generated by the motor during a floating interval; and a back electromotive force calculation part that calculates an average value from a back electromotive force for each of the set number of pulse signals and determines the average value as a back electromotive force during the floating interval when the back electromotive force is consecutively maintained within the set range for the set number

Abstract: An embodiment provides a motor driving device including an inverter configured to generate a pulse width modulation (PWM) signal for controlling driving of a brushless direct current (BLDC) motor and supply the driving voltage to the BLDC motor; a sensor configured to sense a phase voltage and a phase current of the BLDC motor; and a controller configured to receive a target speed of the BLDC motor as an input and generate the PWM signal, calculate a zero cross delay value of the phase current with respect to a phase of the phase voltage using the phase of the phase voltage and a zero cross point of the phase current sensed by the sensor, and determine a load amount to be applied to the BLDC motor using the zero cross delay value and a duty ratio of the PWM signal.

Abstract: An apparatus and a method for removing blooming of a camera image are provided. When a lane marking is not normally detected from an image obtained by photographing a front view or a rear view of a car, it is determined whether the blooming is generated in the image. When it is determined that the blooming is generated, a mask for removing the blooming is generated and superposed on the image. Accordingly, a situation that the lane marking is not normally detected due to the blooming caused by a head light of a car can be reduced or prevented in advance.

Abstract: An apparatus and method for correcting the backlight of a camera are disclosed. When the camera for photographing a moving image by a photographing device, such as a general-purpose CCD or a general-purpose CMOS, enters into a backlight shooting state for simultaneously photographing an object with a very high luminance level and an object with a very low luminance level, as the shutter speed of the photographing device is varied to a long shutter speed and a short shutter speed, an image shot with the long shutter speed and an image shot with the short shutter speed are synthesized and outputted, thereby enabling a proper luminance level object photographing operation for each of the objects. Accordingly, it is possible to efficiently prevent the phenomenon that the object with the low luminance level looks dark due to the object with the high luminance level.

Abstract: An apparatus and method for controlling an image sensor output are discussed. When a certain number of valid pixels of an image sensor, such as a CCD, is selected, a corresponding timing parameter is calculated. Signal values output from charge wells respectively corresponding to unit cells of the image sensor are separated or merged and then output by using the calculated timing parameter. Therefore, an image of a user-defined number of valid pixels can be varied and output in various ways, and all electric charges that are photoelectrically converted by the maximum number of valid pixels of the image sensor can be efficiently used.

Abstract: An apparatus and a method for removing blooming of a camera image are provided. When a lane marking is not normally detected from an image obtained by photographing a front view or a rear view of a car, it is determined whether the blooming is generated in the image. When it is determined that the blooming is generated, a mask for removing the blooming is generated and superposed on the image. Accordingly, a situation that the lane marking is not normally detected due to the blooming caused by a head light of a car can be reduced or prevented in advance.

Abstract: An apparatus and method for controlling an image sensor output are discussed. When a certain number of valid pixels of an image sensor, such as a CCD, is selected, a corresponding timing parameter is calculated. Signal values output from charge wells respectively corresponding to unit cells of the image sensor are separated or merged and then output by using the calculated timing parameter. Therefore, an image of a user-defined number of valid pixels can be varied and output in various ways, and all electric charges that are photoelectrically converted by the maximum number of valid pixels of the image sensor can be efficiently used.

Abstract: A method and an apparatus for processing images in a camera are provided. Even lines and odd lines of a photographing device are respectively read at different points of time to obtain even line data and odd line data and motion estimation is performed on one of the even line data and the odd line data on the basis of an image related to the other of the even line data and the odd line data right of an immediately prior point in time to the one of the even line data and the odd line data to generate a motion-compensated image. Accordingly, a quantity of electric charges charged in the photographing device comes to be increased such that a bright image of an object can be taken and a motion of an image comes to be accurately estimated such that a more distinct moving image can be obtained.

Abstract: An apparatus and method for correcting the backlight of a camera are disclosed. When the camera for photographing a moving image by a photographing device, such as a general-purpose CCD or a general-purpose CMOS, enters into a backlight shooting state for simultaneously photographing an object with a very high luminance level and an object with a very low luminance level, as the shutter speed of the photographing device is varied to a long shutter speed and a short shutter speed, an image shot with the long shutter speed and an image shot with the short shutter speed are synthesized and outputted, thereby enabling a proper luminance level object photographing operation for each of the objects. Accordingly, it is possible to efficiently prevent the phenomenon that the object with the low luminance level looks dark due to the object with the high luminance level.