Abstract: A line-of-sight detection apparatus includes a processor, and a memory storing a program which, when executed by the processor, causes the line-of-sight detection apparatus to function as a line-of-sight detection unit configured to detect a position of a line of sight of a user with respect to a display unit, a subject detection unit configured to detect a subject from an image displayed in the display unit, and a correction value determination unit configured to determine a correction value used by the line-of-sight detection unit such that the position of the line of sight detected by the line-of-sight detection unit matches a position of the subject detected by the subject detection unit.

Abstract: There is provided a computing apparatus that includes: a retaining unit configured to retain an approximation table that approximately represents an activation function of a neural network, the approximation table mapping between a plurality of discrete input samples of the activation function and output samples respectively corresponding to the plurality of input samples; and a computing unit configured to convert an input value of activation function computation to an output value using the approximation table retained by the retaining unit when the activation function is selected for the activation function computation. The plurality of input samples of the approximation table are set such that input samples more distant from a reference point in the domain of the activation function have a larger neighboring sample interval.

Abstract: An electronic apparatus according to the present invention, includes at least one memory and at least one processor which function as: a first acquisition unit configured to acquire right line-of-sight information on a line-of-sight of a right eye of a user; a second acquisition unit configured to acquire left line-of-sight information on a line-of-sight of a left eye of the user; and a control unit configured to control such that right eye calibration is performed on a basis of right line-of-sight information which is acquired by the first acquisition unit at a first timing, and left eye calibration is performed on a basis of left line-of-sight information which is acquired by the second acquisition unit at a second timing which is different from the first timing.

Abstract: A control device controls a display device so as to perform stereoscopic display in which a virtual object is disposed in a three-dimensional space, through right-eye display and left-eye display. The control device detects an object present in a field of vision of a user, in the three-dimensional space; detects a distance from the display device to the detected object; and controls the display device so as to perform the stereoscopic display, wherein a depth position of the virtual object is controlled by controlling a parallax of the virtual object between the right-eye display and the left-eye display, on a basis of a distance from the display device to a specific object that is present in a display direction of the virtual object, and that is an object closest to the display device.

Abstract: A motor drive device enabling efficient position control at a low cost is provided. The motor drive device includes a position detection unit configured to detect a current position of an object to be driven by a motor and a motor control unit configured to calculate an output control amount for the motor based on a deviation between the current position and a target position of the object to be driven by the motor while changing an advance angle in a rotational phase of the motor according to the output control amount when the advance angle is within a predetermined advance angle range in the rotational phase of the motor and changing a drive voltage of the motor with the advance angle fixed when the advance angle is outside the predetermined advance angle range.

Abstract: A line-of-sight detection apparatus includes a processor, and a memory storing a program which, when executed by the processor, causes the line-of-sight detection apparatus to function as a line-of-sight detection unit configured to detect a position of a line of sight of a user with respect to a display unit, a subject detection unit configured to detect a subject from an image displayed in the display unit, and a correction value determination unit configured to determine a correction value used by the line-of-sight detection unit such that the position of the line of sight detected by the line-of-sight detection unit matches a position of the subject detected by the subject detection unit.

Abstract: A motor driving device includes an OPEN driving mode in which a driving waveform is generated without using detection information of a rotational position of a rotor and the rotor is rotated, and a CLOSE driving mode in which a phase of a rotational position and a phase of a driving waveform are synchronized using the detection information of the rotational position of the rotor, a desired phase difference is set between the rotational position and the driving waveform, and the rotor is rotated. The CPU controls rotation of the rotor using the OPEN driving mode, instructs a driving waveform generating circuit to set a phase difference for generating a torque in a reversing direction when rotation of the rotor is reversed, switches to the CLOSE driving mode, and then switches to the OPEN driving mode again when reversing has been completed.

Abstract: There is provided a computing apparatus that includes: a retaining unit configured to retain an approximation table that approximately represents an activation function of a neural network, the approximation table mapping between a plurality of discrete input samples of the activation function and output samples respectively corresponding to the plurality of input samples; and a computing unit configured to convert an input value of activation function computation to an output value using the approximation table retained by the retaining unit when the activation function is selected for the activation function computation. The plurality of input samples of the approximation table are set such that input samples more distant from a reference point in the domain of the activation function have a larger neighboring sample interval.

Abstract: A motor drive device enabling efficient position control at a low cost is provided. The motor drive device includes a position detection unit configured to detect a current position of an object to be driven by a motor and a motor control unit configured to calculate an output control amount for the motor based on a deviation between the current position and a target position of the object to be driven by the motor while changing an advance angle in a rotational phase of the motor according to the output control amount when the advance angle is within a predetermined advance angle range in the rotational phase of the motor and changing a drive voltage of the motor with the advance angle fixed when the advance angle is outside the predetermined advance angle range.

Abstract: An apparatus includes at least one processor or circuit programmed to function as a detection unit that detects a rotational position of a rotor, and a generation unit that generates a driving waveform for a motor based on the detected rotational position. The generation unit includes a phase difference setting unit that sets a phase difference between the rotational position and the driving waveform, a changing time setting unit that sets a changing time, which is a time required for changing the phase difference from a phase difference before the change to a phase difference after the change, in a case where the set phase difference is changed, and a determination unit that determines a phase of the driving waveform based on the phase difference before the change, the phase difference after the change, and the changing time.

Abstract: A motor driving device includes an OPEN driving mode in which a driving waveform is generated without using detection information of a rotational position of a rotor and the rotor is rotated, and a CLOSE driving mode in which a phase of a rotational position and a phase of a driving waveform are synchronized using the detection information of the rotational position of the rotor, a desired phase difference is set between the rotational position and the driving waveform, and the rotor is rotated. The CPU controls rotation of the rotor using the OPEN driving mode, instructs a driving waveform generating circuit to set a phase difference for generating a torque in a reversing direction when rotation of the rotor is reversed, switches to the CLOSE driving mode, and then switches to the OPEN driving mode again when reversing has been completed.

Abstract: An electric motor control device includes a drive waveform generating unit configured to generate a drive waveform (a sine wave or a pseudo-trapezoidal wave) to an electric motor. A plurality of photo interrupters detect a rotational phase of an electric motor, and a information of rotational speed is detected by an encoder circuit based on a detected signal of the rotational phase of the electric motor. The control unit controls the drive waveform generating unit on the basis of detection information of the rotational phase of the electric motor and performs control so that a phase relationship between the rotational phase of the electric motor and the phase of the drive waveform is kept constant. Furthermore, the control unit sets an amplitude value of the drive waveform generated by the drive waveform generating unit in accordance with a difference between a target speed and the detected information of rotational speed and performs speed control so that a speed of the electric motor is kept constant.

Abstract: A motor drive device includes a detecting unit that detects a rotational position of a rotor, a drive waveform generating circuit that generates a drive waveform, a control unit that synchronizes a phase of the rotational position of the rotor and a phase of the drive waveform, and a phase difference setting unit that sets a phase difference between the rotational position and the drive waveform during synchronization. An Apos generating unit calculates and outputs a position count proportional to a rotation amount of the rotor. A Bpos generating unit acquires the position count from the Apos generating unit and converts the count into a count value with the upper limit value as the maximum value. A Cpos generating unit multiplies the count value acquired from the Bpos generating unit by the conversion ratio, and calculates a count value with a predetermined upper limit value as the maximum value.

Abstract: A motor drive apparatus includes a drive unit to supply motor coils with sinusoidal drive signals, a signal output unit outputs signals that change with rotation of a rotor, and a control unit. The control unit acquires first information relating to the sinusoidal drive signals at a timing of change of a corresponding one of the output signals in a case where there is no follow-up delay of the rotor relative to the drive signals. When the corresponding one of the output signals is changed, the control unit acquires second information relating to the sinusoidal drive signals at a timing of change of the corresponding one of the output signals in a case where there is a follow-up delay of the rotor relative to the drive signals. The control unit corrects the follow-up delay of the rotor based on a determined difference between the first and second information.

Abstract: An apparatus includes at least one processor or circuit programmed to function as a detection unit that detects a rotational position of a rotor, and a generation unit that generates a driving waveform for a motor based on the detected rotational position. The generation unit includes a phase difference setting unit that sets a phase difference between the rotational position and the driving waveform, a changing time setting unit that sets a changing time, which is a time required for changing the phase difference from a phase difference before the change to a phase difference after the change, in a case where the set phase difference is changed, and a determination unit that determines a phase of the driving waveform based on the phase difference before the change, the phase difference after the change, and the changing time.

Abstract: A motor control apparatus applying a sinusoidal drive waveform to a motor and including a position detection unit outputting a signal according to a motor shaft's position; and a control unit: acquiring a phase value of the motor's drive waveform when a signal is output by the position detection unit, changing a cycle of the drive waveform by measuring time from a previously output signal to a presently output signal, comparing the phases of the drive waveform and the motor shaft, and controlling to change to a cycle at which a phase value of the drive waveform matches a target phase value when a travel time corresponding to a phase value for adjustment has elapsed from a present time when a phase value of the drive waveform presently acquired differs from a target phase value acquired when the motor's drive current and drive voltage are in a designated phase relationship.

Abstract: A motor drive device includes a detecting unit that detects a rotational position of a rotor, a drive waveform generating circuit that generates a drive waveform, a control unit that synchronizes a phase of the rotational position of the rotor and a phase of the drive waveform, and a phase difference setting unit that sets a phase difference between the rotational position and the drive waveform during synchronization. An Apos generating unit calculates and outputs a position count proportional to a rotation amount of the rotor. A Bpos generating unit acquires the position count from the Apos generating unit and converts the count into a count value with the upper limit value as the maximum value. A Cpos generating unit multiplies the count value acquired from the Bpos generating unit by the conversion ratio, and calculates a count value with a predetermined upper limit value as the maximum value.

Abstract: An image processing apparatus comprises: an obtaining unit configured to obtain three-dimensional data that describes a space that includes a physical object; a converting unit configured to convert, for data of positions in a predetermined direction of the three-dimensional data, each position in accordance with a position at which a physical object is present; and an output unit configured to output three-dimensional data for which the positions in the predetermined direction have been converted.

Abstract: An electric motor control device includes a drive waveform generating unit configured to generate a drive waveform (a sine wave or a pseudo-trapezoidal wave) to an electric motor. A plurality of photo interrupters detect a rotational phase of an electric motor, and a information of rotational speed is detected by an encoder circuit based on a detected signal of the rotational phase of the electric motor. The control unit controls the drive waveform generating unit on the basis of detection information of the rotational phase of the electric motor and performs control so that a phase relationship between the rotational phase of the electric motor and the phase of the drive waveform is kept constant. Furthermore, the control unit sets an amplitude value of the drive waveform generated by the drive waveform generating unit in accordance with a difference between a target speed and the detected information of rotational speed and performs speed control so that a speed of the electric motor is kept constant.

Abstract: A CPU obtains a difference between a data number at timing when an ENC0 signal or an ENC1 signal changes in a case where there is no follow-up delay of a rotor relative to a voltage signal applied to an A-phase coil and a B-phase coil and a data number at timing when the ENC0 signal or the ENC1 signal changes in a case where there is a follow-up delay of the rotor relative to the voltage signal applied to the A-phase coil and the B-phase coil. Then, the CPU controls the voltage signal applied to the A-phase coil and the B-phase coil based on the obtained difference.