摘要:
Disclosed is a backlight device that reduces elevated black levels and the visibility of flickering when displaying a video. A light-emitting unit (121) is provided with a plurality of light-emitting areas that individually emit illumination light, and illuminates a liquid crystal panel (110) with the illumination light from the plurality of light-emitting areas. A motion detection unit (150) detects image motion from an image signal. A brightness control unit (130) acquires a brightness determination reference value for each light-emitting area on the basis of the image signal, and in regards to each of the plurality of light-emitting areas, weights the acquired brightness determination reference value for each of the one or more light-emitting areas that constitute a weighting region and determines the light emission brightness value for each of the light-emitting areas on the basis of the weighting results. An LED driver (122) drives each of the plurality of light-emitting areas in accordance with the determined light emission brightness value for each of the light-emitting areas. The brightness control unit (130) dynamically sets the light-emitting areas that constitute the weighting areas in accordance with the detected motion.
摘要:
A compressor impeller 2 has a plurality of long blades 2a and short blades 2b alternately arranged in a circumferential direction, and an inner surface of a compressor housing 10 is provided with an annular groove 12 which surrounds vicinities of leading edge tip portions of the short blades 2b in a circumferential direction and is concave outward so as not to communicate with a suction port of a compressor.
摘要:
Gamma converter circuits use first to third types of first and second gamma-characteristics to gamma-convert an input video signal. Selectors select one pair among three pairs of gamma-characteristics in accordance with a transmittance to be used for display, and selects one of the six gamma corrected outputs such that both a distribution area ratio of pixels driven by the video signal as gamma corrected by use of the first gamma-characteristic of the selected pair of gamma characteristics and a distribution area ratio of pixels driven by the video signal as γ corrected by use of the second gamma-characteristic of the selected pair of gamma-characteristics are equal to a distribution area ratio specified in advance for the selected pair of gamma-characteristics.
摘要:
A one-way rotational transfer mechanism includes a rotary input member; a holding member including an axially orthogonal surface to the axis; a hollow-cylindrical rotary output shaft positioned coaxially around the rotary input member to be rotatable relative to the rotary input member, and including a cylindrical inner peripheral surface; a circumferential guide groove formed on the rotary input member; and a torque transfer ball installed between the axially orthogonal surface, the cylindrical inner peripheral surface and the circumferential guide groove, to roll on and be held between the axially orthogonal surface and the circumferential guide groove. The circumferential guide groove is shaped to make the torque transfer ball revolve around the rotary input member in a same direction as the rotary input member while trailing therebehind and to make the torque transfer ball press against the cylindrical inner peripheral surface when the rotary input member rotates.
摘要:
A radio communication apparatus which communicates with a radio terminal device, the apparatus belonging to a first group, the device performing handoff between apparatuses which belong to the first group, the apparatus includes unit selecting one block from frequency blocks obtained by dividing a specified frequency band, the frequency blocks being continuous on a frequency axis, unit detecting an unused channel among channels contained in the selected block, unit detecting an in-use channel among the channels when the unused channel is detected, unit determining whether a second group to which a device which is using the detected in-use channel belongs is the same as the first group, and unit assigning the detected unused channel as a channel for communication with the radio terminal device when the in-use channel fails to be detected or the determination unit determines that the second group is the same as the first group.
摘要:
Provided is a braking control apparatus for a slewing type working machine capable of giving a braking operation easily intuitively grasped. This apparatus includes: a flow control valve actuator increasing an opening of a flow control valve between a slewing hydraulic motor and a hydraulic pump according to an operation amount of a slewing operation member; pressure control valves limiting respective maximums of an inlet and outlet pressures of the hydraulic motor to a set value corresponding to a pressure command signal to be input; a motor-side pressure controller which retains a set pressure of the motor inlet sided pressure control valve to a pressure for motor driving and lets a set pressure of the motor outlet side pressure control valve be a set pressure for a braking torque corresponding to an operation amount of a braking operation member other than the slewing operation member; and a valve opening limiter reducing the opening of the flow control valve in correspondence with the operation of the braking operation member.
摘要:
A bearing device includes a turbine-side bearing 21 and a compressor-side bearing 22 each of which is a floating-bush type sliding bearing. A gap (turbine-side inner peripheral clearance TI) between the turbine-side bearing 21 and a rotating shaft 13 is set to be larger than a gap (compressor-side inner peripheral clearance CI) between the compressor-side bearing22 and the rotating shaft 13. In the bearing structure, unstable vibration including self-excited vibration can be suppressed.
摘要:
Achieved are suppression of image-quality deterioration caused by an incorrect motion vector and suppression of flicker in video without causing adverse effects such as image blur. A video display apparatus performs multi-level gradation display by controlling light emission of subfields into which one field displaying a picture is divided, the video display apparatus comprising: an image processing unit configured to calculate a motion vector of the picture; a reliability value calculation unit configured to calculate a reliability value of the calculated motion vector; and a subfield display control unit configured to determine a subfield control pattern based on the calculated reliability value, and to control the light emission according to the determined subfield control pattern.
摘要:
An ultrasonic rotary drive device includes an ultrasonic motor including an ultrasonic generating portion and a first rotary output portion, wherein the first rotary output portion is in contact with the ultrasonic generating portion to be rotatable relative to the ultrasonic generating portion and rotates by ultrasonic vibrations generated by the ultrasonic generating portion; and a one-way rotational transfer mechanism including a rotary input portion and a second rotary output portion. The rotary input portion rotates with the first rotary output portion. The second rotary output portion is rotatable independently of the rotary input portion. Rotation of the rotary input portion is transferred to the second rotary output portion when the rotary input portion is rotated. Rotation of the second rotary output portion is prevented from being transferred to the rotary input portion when the second rotary output portion is rotated.
摘要:
A switching power supply circuit uses a magnetic material that is harder to be magnetically saturated than ferrite as a core of a transformer or a choke coil and suitably protects a switching element. The circuit includes a transformer having a core made of a magnetic material of amorphous metal, a primary-side winding and a secondary-side winding. The circuit further includes a switching element for flowing current through the primary-side winding of the transformer according to a pulsive drive signal, and a primary-side current detection circuit for detecting the current flowing through the primary-side winding. The circuit further includes plural circuit elements for rectifying and smoothing a voltage generated in the secondary-side winding of the transformer to generate an output voltage, and a control circuit for generating the drive signal based on at least a detection result of the primary-side current detection circuit, and limiting a period for flowing the current in the primary-side winding.