摘要:
An image display apparatus includes a light source, a scanner that scans an output beam emitted from the light source to forms an image on a projection surface, a light source driver that control intensity of the output beam emitted from the light source by controlling a drive current for driving the light source based on input image data, a light source drive power supply that supplies power to the light source driver, and a voltage controller that controls an output voltage from the light source drive power supply based on the input image data.
摘要:
A pulse width modulation signal generating device which generates a pulse width modulation signal for modulating laser beam according to image data includes: a cycle signal output circuit which outputs a cycle signal having a cycle corresponding to a drawing rate for drawing the image data by the laser beam; and a pulse width modulation circuit which receives supply of the image data and the cycle signal and modulates a pulse wave having a cycle determined by the cycle signal by changing duty ratio of the pulse wave based on the image data to produce the pulse width modulation signal.
摘要:
A pulse width modulation signal generating device which generates a pulse width modulation signal for modulating laser beam according to image data includes: a cycle signal output circuit which outputs a cycle signal having a cycle corresponding to a drawing rate for drawing the image data by the laser beam; and a pulse width modulation circuit which receives supply of the image data and the cycle signal and modulates a pulse wave having a cycle determined by the cycle signal by changing duty ratio of the pulse wave based on the image data to produce the pulse width modulation signal.
摘要:
An image display apparatus includes a light source, a scanner that scans an output beam emitted from the light source to forms an image on a projection surface, a light source driver that control intensity of the output beam emitted from the light source by controlling a drive current for driving the light source based on input image data, a light source drive power supply that supplies power to the light source driver, and a voltage controller that controls an output voltage from the light source drive power supply based on the input image data.
摘要:
A scanning image display includes a plurality of light sources adapted to emit a plurality of light beams, and a scan unit adapted to scan the light beams emitted from the light sources on a projection surface, which comprises a plurality of sub-illumination areas, in a first and second direction. One of the first and second directions is a high-speed scan direction and the other is a low-speed scan direction. The sub-illumination areas are arranged in the low-speed scan direction, such that the light beams scanned in adjacent sub-illumination areas are scanned in the opposite direction.
摘要:
An input device which generates control information by moving an object to be detected, having an image capture section which captures an image of the object to be detected, a feature point extraction section which extracts a feature point of the image captured by the image capture section, a difference calculation section which calculates a difference between a reference position and a position of the feature point, and a control information output section which outputs the control information corresponding to the calculated difference.
摘要:
There are provided a light-emitting device and a driving method thereof capable of suppressing an image blur and a flicker. The light-emitting device includes: a display unit in which a plurality of pixel circuits for allowing light-emitting elements to emit light with brightness corresponding to a data signal is arranged; an image acquiring unit for acquiring a first image and a second image corresponding to times different from each other in a frame period of time, respectively; a data-line driving unit for supplying a data signal corresponding to the first image to the pixel circuits belonging to a first group among the plurality of pixel circuits and supplying a data signal corresponding to the second image to the pixel circuits belonging to a second group other than the first group; and a light-emission control unit for allowing the light-emitting elements of the pixel circuits belonging to the first group to emit light in a first period of the frame period of time and allowing the light-emitting elements of the pixel circuits belonging to the second group to emit light in a second period other than the first period of the frame period of time.
摘要:
The present invention provides a rotation controller adjusting the speed of a rotary member (103). Phase difference compensating means (118) outputs a phase difference compensating signal (119) corresponding to a phase difference between a rotation signal of the rotary member (103) and a target signal, and frequency difference compensating means (114) outputs a frequency difference compensating signal (115) corresponding to a frequency difference between these signals. The rotary member (103) is braking-controlled by means of these signals. Use of the phase difference compensating signal (119) permits achievement of PLL control, and maintenance within the locking range allows a stable rotation control with a high response. Further, use of the frequency difference compensating signal (115) makes it possible to quickly bring the control within the locking range even when the rotary member (103) deviates from the target signal, and thus to carry out a control with a high response even upon riseup of the rotary member (103).
摘要:
A light source device includes: a light emitting element; a pulse drive section adapted to supply the light emitting element with a pulse current in order for controlling an average emission light intensity from the light emitting element; and a light emitting element shunt section disposed in parallel to the light emitting element and adapted to shunt the light emitting element.
摘要:
A light source device including a semiconductor light emitting element and a control section for controlling the semiconductor light emitting element in accordance with an input value. The control section includes a supply section that supplies the semiconductor light emitting element with a drive current based on the input value and an estimated threshold current of the semiconductor light emitting element, and an estimation section that obtains the estimation of the threshold current using the drive current and the amount of light detected to be emitted from the semiconductor light emitting element.