39results about How to "Increase or decrease brightness" patented technology

A simple user interface for touchless control of electrically operated equipment. Unlike other systems which depend on distance to the sensor or sensor selection this system depends on hand and or finger motions, a hand wave in a certain direction, or a flick of the hand in one area, or holding the hand in one area or pointing with one finger for example. The device is based on optical pattern recognition using a solid state optical matrix sensor with a lens to detect hand motions. This sensor is then connected to a digital image processor, which interprets the patterns of motion and outputs the results as signals to control fixtures, appliances, machinery, or any device controllable through electrical signals.

The invention discloses a drive circuit for controlling electric energy of a light source, a method and a system. The drive circuit comprises a power convertor which is respectively connected with a power supply and a light source and a dimming controller connected with the power convertor; the power convertor receives the electric energy from the power supply and supplies an electric energy after adjustment for the light source; the power convertor includes a control switch in serial connection with the light source; the dimming controller monitors the power switch between the power supply and the drive circuit and receives the dimming request signal and the dimming stop signal; the dimming request signal indicates the first group of actions of the power switch and the dimming stop signal indicates the second group of actions of the power switch. If receiving the dimming request signal, the dimming controller controls the control switch to continuously adjust the electric energy which is output from the power convertor after adjustment; and if receiving the dimming stop signal, the dimming controller stops the electric energy which is output from the power convertor after adjustment.

The invention provides a mobile terminal and a man-machine interaction method thereof, and mainly solves the problems of single operating mode and lack of flexibility of an existing mobile terminal and a man-machine interaction method thereof. The mobile terminal comprises a terminal body, and sensors for sensing touch, temperature and pressure are arranged on sides of the terminal body. The man-machine interaction method of the mobile terminal includes the steps: 1) setting hardware of the mobile terminal; 2) defining action performed by a consumer; 3) acquiring input signals; 4) processing the signals and performing the action. A structure key control mode is changed into a touch mode and a sliding mode, some rapid man-machine interaction methods are added on the basis, the man-machine interaction method is more practical, novel and humanized, and some functions of a mobile phone are rapidly achieved by standing at the perspective of consumer use.

An illumination system includes a light source having multiple solid state sources, such as LEDs, and emits light of a color temperature of about 5500° K. The system further includes a flexible optical cable formed by a centrally located optical fiber and five corresponding peripheral optical fibers distributed around the center fiber and a sheath for maintaining the optical fibers in a predetermined spatial relationship, with each of the solid state sources is butt-coupled to one end of a single optical fiber. The solid state sources are thermally coupled to a cooling system, which may include fans or other active cooling elements.

This invention relates to a method for applying at least one of contrast adjustment and brightness adjustment to a compressed, motion compensated DCT-based video sequence corresponding to an image processing operation, comprising the steps of providing the compressed, motion compensated DCT-based video sequence, applying the image processing operation on the video sequence in compressed domain resulting in an image processed, compressed video sequence, wherein the applying is executed by adjusting of DCT-components defining the DCT-based video sequence.

The invention discloses an intelligent light-dimming table lamp and a light-dimming control system thereof. The table lamp has three working modes, so that a user can switch different working modes according to different environments; and moreover, energy sources can be intelligently controlled and saved, harm, on human eyes, of a strong table lamp light source when the user gets up in the morning and justly turns on the lamp is reduced; and the intelligent light-dimming table lamp is more user-friendly.

A light source specially adapted for use in dental procedures is described. The light source includes multiple solid state sources such as LEDs. The light sources emit light of a color temperature of about 5500° K. or more, which enables a dentist using the light source to detect caries in a patient's oral cavity more easily and reliably. Each of the sources is preferably butt-coupled to one end of a single optical fiber. The sources are also thermally coupled to a cooling system, which may include fans or other active cooling elements. The sources are arranged spatially inside a housing to facilitate bundling them into a flexible optical cable. The optical cable transmits the light emitted by the sources to a conventional dental lighting handpiece.

The present invention relates to a camera module and a method for driving the camera module, the module including: a photographing unit controlling a shutter speed to photograph an image in response to an inputted control signal; a display unit displaying the image; and a controller outputting a first shutter speed control signal to the photographing unit to allow an average brightness of two or more particular areas to become a set reference brightness, in a case the two or more particular areas in a plurality of divided areas in the display unit are selected.

The invention discloses a pixel circuit, a driving method thereof, and a display panel. The pixel circuit comprises a resetting module, a data writing module, a compensation module, a driving module,a lighting control module, a brightness adjusting module and a monochrome light emitting device. Since the driving module drives a monochrome light emitting device to emit light whose brightness increases or decreases with increasing temperature through the brightness adjusting module and the turned-on light emitting control module, the brightness ratio changes of the red, green and blue three-color light emitting devices can be little or not change under high temperature conditions, thereby ensuring the stability of the white balance of the mixed white light of the red, green and blue three-color light-emitting devices under high temperature conditions.

An object of the invention is to provide a light source driving method for supplying electric power to a light source of a projector, and and to provide a projector using this light source driving method. The projector has a lamp (2) as a light source for emitting light, a lamp driving electric power control section (3) as a light source driving section for supplying electric power for operating the lamp (2), an image pickup section (7) as an image obtaining section for receiving a projected image and obtaining image data to adjust the projected image, and a synchronous signal generating section (5) for generating a signal as an operation reference. The synchronous signal generating section (5) generates a first operation signal for determining operation timing of an electric current output of the lamp driving electric power control section (3), and a second operation signal for determining operation timing for receiving the projected image and obtaining the image data by the image pickup section (7), and the lamp driving electric power control section (3) and the image pickup section (7) are synchronously operated.

The invention discloses an Android screen always-on and energy-saving control method and system based on dynamic brightness adjustment. The method comprises the following steps: S1, when a user uses video play software, acquiring the using permission of a screen lock of an Android system, and controlling a screen to be in an always-on state in the use period of the software via the screen lock; S2, after the screen enters the always-on state, controlling the brightness of the screen in a high brightness state if the Android system is in a video playing state, or controlling the brightness of the screen in a low brightness state if the Android system is in a non-video playing state; and S3, unlocking the screen lock after use of the software is finished, so that the screen can recover a screen-off state normally. According to the method and the system, the brightness of the screen can be improved or lowered according to different video use conditions, so that power consumption can be reduced, and the standby time of a mobile phone can be prolonged; and the method can improve user experience.

An object of the invention is to provide a light source driving method for supplying electric power to a light source of a projector, and to provide a projector using this light source driving method. The projector has a lamp (2) as a light source for emitting light, a lamp driving electric power control section (3) as a light source driving section for supplying electric power for operating the lamp (2), an image pickup section (7) as an image obtaining section for receiving a projected image and obtaining image data to adjust the projected image, and a synchronous signal generating section (5) for generating a signal as an operation reference. The synchronous signal generating section (5) generates a first operation signal for determining operation timing of an electric current output of the lamp driving electric power control section (3), and a second operation signal for determining operation timing for receiving the projected image and obtaining the image data by the image pickup section (7), and the lamp driving electric power control section (3) and the image pickup section (7) are synchronously operated.

The embodiment of the invention discloses a display screen brightness adjusting method and device, a storage medium and a terminal. The method comprises the following steps: acquiring a current ambient brightness value; judging whether the brightness value is smaller than a preset threshold value or not; if so, obtaining a current distance value of the face of the user; and adjusting the brightness of the display screen according to the distance value. According to the embodiment, the ambient light brightness of the current terminal in use is detected, the ambient light brightness is comparedwith the terminal display screen brightness, and according to the comparison result, the terminal screen light is used as a light source for enhancing or weakening the weak ambient light where the user is located to enhance or weaken the ambient light brightness of the range where the user is located, so that the brightness adjustment efficiency of the terminal display screen can be effectively improved.

An article of manufacture is disclosed, a lighted portable safety ashtray, comprising:at least one hollow outer body of a suitable height, width and depth, and;at least one hollow inner body of a suitable height, width and depth, smaller than and inserted into the hollow outer body, and; at least one removable receptacle top disposed on the inner hollow body and outer hollow body further comprising an opening in the receptacle top, and; at least one light source, and;at least one power supply, and; at least one electrical circuit in communication with the light source and the power supply, and; at least one electrical switch to open or close the electrical circuit in communication with the light source and the power supply.Optional timer and electroluminescence light source is also disclosed.

The invention discloses an illumination control circuit of a novel LED (Light Emitting Diode) flashlight. The circuit is composed of a DC (Direct Current) charging constant-current circuit, batteries, a PWM (Pulse Width Modulation) circuit, a singlechip microcomputer circuit, an auxiliary circuit and an LED lamp. The entire circuit is powered by adopting six 1.2V nickel-metal hydride batteries, has the capacity of 700mAh and is divided into five gears in total, and two touch keys are adopted to increase or reduce the brightness of the lamp. The work current is 700mA when the maximal gear is supported, the work current at the minimal gear corresponds to the longest discharge time, and the brightness can be selected as required. After the control circuit is started, the work current of the lamp is set to be the middle gear, the current is 350mA, and the brightness is about 50%. When the voltage of the batteries is reduced to 6V, the power supply is cut off, the quiescent current of the circuit is smaller than 50 mu A, a switch is used for tuning on and turning off the lamp by adopting a magnetic element (a magnetic reed pipe), and thus, the LED flashlight is prolonged in service life.

The invention aims to provide a control circuit capable of regulating a color rendering index for an energy-saving light-emitting diode (LED) lamp. By the control circuit, high LED light emitting consistency is achieved, and light emitting color temperature can be regulated according to different requirements. The control circuit comprises a constant current power supply, wherein the constant current power supply is connected with a micro control unit (MCU) control chip; the output end PWM1 of the MCU control chip is connected with a constant current control circuit which supplies power to a first group of LED module; the output end PWM2 of the MCU control chip is connected with another constant current control circuit which supplies power to a second group of LED module; and the output end PWM3 of the MCU control chip is connected with a third constant current control circuit which supplies power to a third group of LED module. By the invention, the utilization rate of an LED is increased; and the control circuit is more energy-saving, more environment-friendly and applied to the LED lamp.

This invention relates to a method for applying at least one of contrast adjustment and brightness adjustment to a compressed, motion compensated DCT-based video sequence corresponding to an image processing operation, comprising the steps of providing the compressed, motion compensated DCT-based video sequence, applying the image processing operation on the video sequence in compressed domain resulting in an image processed, compressed video sequence, wherein the applying is executed by adjusting of DCT-components defining the DCT-based video sequence.

The invention discloses an intelligent illuminating system based on PWM technology. The intelligent illuminating system includes a plurality of illumination control regions each of which includes at least one entrance / exit, each illumination control region is provided with an infrared detection module, a distance detection module, an AD conversion circuit, an optical signal acquisition circuit, a single-chip microcomputer, a brightness level display circuit and an illumination module, and the infrared detection module and the distance detection module are installed at the entrance / exit of the illumination control region. The intelligent illuminating system based on PWM technology solves the problem that an existing shopping mall adopts unified illumination, power consumption is too large, and electric energy is wasted.

The invention belongs to the technical field of ceramic glaze water, and particularly relates to a pearl bone china glaze water preparation method which comprises the steps of bone china frit glaze water preparation, pearl bone china glaze preparation, pearl bone china glaze stirring and pearl bone china glaze water preparation, materials are mixed in a molten state to prepare porcelain glaze, pores of the materials can be removed in the molten state, the flowability of materials is accelerated through stirring, air hole removal can be accelerated, uniform mixing of the materials can be facilitated, the hardness of the porcelain glaze can be guaranteed through sufficient mixing of the materials in the porcelain glaze, the whiteness and brightness of bone china can be increased and decreased when the porcelain glaze is used for preparing glaze water, the glaze water can be prevented from containing iron by removing iron from glaze powder, iron expands with heat and contracts with cold, glaze water contains excessive iron, fired porcelain easily generates fine cracks, the fine cracks can be prevented from being generated through the iron removal process, and then bone china has good gloss.

The invention relates to an illumination energy-saving method capable of detecting illumination brightness regularly. An illumination system comprises a plurality of illuminants with adjustable brightness and light sensors for detecting illumination ambient brightness, wherein the illumination ambient brightness is formed by the illumination light of the illuminants, natural light, and illumination light not belonging to the illumination system. The illumination energy-saving method comprises steps of A, setting the basic illumination brightness of an illumination environment, namely setting the basic light sensitivities of respective light sensors; B, adjusting the illumination brightness of each illuminant to a corresponding brightness value in order to obtain the real-time brightness environment of the illumination environment, then enabling the light sensors to detect the real-time brightness environment in order to obtain the detection light sensitivities, reflecting the real-time illumination brightness of the real-time brightness environment, of the light sensors; C, comparing the detection light sensitivities actually detected by the light sensors with respective basic light sensitivities of the light sensors, and repeating the step B if the detection light sensitivities actually detected by the light sensors do not satisfy the respective basic light sensitivities of the light sensors, or going to the step D; and D, enabling the illuminants to perform illumination according to the respective brightness in the real-time brightness environment.

The related DC can modify and define the brightness of digital image, which comprises: setting standard brightness value; reading original RGB data of image; setting the original gain values for RGB respectively; calculating original data to obtain an average brightness value; comparing the standard value and the calculated value to obtain a ratio; multiplying the ratio to the original RGB gain value to obtain relative adjustment gain value, and defining the image brightness.

The invention discloses a distance light guide module and a vehicle lamp module thereof. The automobile lamp module comprises a high-beam light guide module (1), a lens (4), a high beam LED circuit board (5), a low beam LED circuit board (8), a primary reflector (10) and a secondary reflector (9), wherein the primary reflector (10) and the secondary reflector (9) are used for forming a low beam shape. The LED light is reflected by a primary low-beam reflector and a secondary low-beam reflector, most of the light is refracted by the lens (4) and then emitted out, low-beam shape broadening (5-1)is formed on a light screen, the other small part of the light is reflected and refracted by the high-beam light guide module and then emitted out of the lens (4), and a low-beam shape cut-off line (5-2) and a III light shape (5-3) are formed. According to the invention, an optical element is subjected to integration, position precision among all the components is guaranteed, no noise is generated during high beam and low beam switching, the occupied space can be small, brightness changes of a specific area in the low beam shape are controlled, the ADB function is effectively achieved, the road surface irradiation effect of the automobile lamp is improved, a clear, comfortable and dazzling III-area light shape is provided, and the automobile driving safety performance is improved.

The invention discloses a drive circuit for controlling electric energy of a light source, a method and a system. The drive circuit comprises a power convertor which is respectively connected with a power supply and a light source and a dimming controller connected with the power convertor; the power convertor receives the electric energy from the power supply and supplies an electric energy after adjustment for the light source; the power convertor includes a control switch in serial connection with the light source; the dimming controller monitors the power switch between the power supply and the drive circuit and receives the dimming request signal and the dimming stop signal; the dimming request signal indicates the first group of actions of the power switch and the dimming stop signal indicates the second group of actions of the power switch. If receiving the dimming request signal, the dimming controller controls the control switch to continuously adjust the electric energy which is output from the power convertor after adjustment; and if receiving the dimming stop signal, the dimming controller stops the electric energy which is output from the power convertor after adjustment.

The invention discloses a decorative lamp of a bicycle. The decorative lamp comprises a circular-tube-shaped shell, a radial support integrally formed on the inner side of the middle of the shell, a reflector arranged on the inner side of the front end of the shell, and a center LED installed at the bottom in the reflector. A flow diversion ring is formed at the portion, located at the rear portion of the reflector, of the inner wall of the shell. A gap with the width larger than 5 mm is reserved between the periphery of the reflector and the inner wall of the shell. The outer wall of the reflector serves as an arc-shaped convex face for guiding airflow. The front end of the reflector is in a necking-down shape with the outer portion narrower than the inner portion. An electric push rod for controlling the gap between the reflector and the flow guide ring is connected between the center of the support and the rear end of the reflector. A water storage tank is connected below the middle of the shell. The face, facing the interior of the shell, of the water storage tank is provided with a microporous ultrasonic atomization piece, and the microporous ultrasonic atomization piece is connected with a water diversion cotton thread stretching into the bottom of the water storage tank. A vivid simulative jet flame effect can be achieved.

A control set for adjusting the light source is provided. The control set includes a control module. The control module includes a control chip and a storage. The control chip controls the brightness of the lamp. The storage connected with a timing unit and stores a fine tuning signal. The fine tuning signal stored in the storage is generated and output to the adjust signal by turning off and turning on the adjustable power switch, the timing unit sets a preset time period in which the fine tuning signal maintains effective, and the fine tuning signal controls the lamp to have a brightness the same as the brightness when the lamp is turned off last time, or the brightness of the lamp is gradually increased to the preset brightness and then decreased.

A control set for adjusting the light source is provided. The control set includes a control module. The control module includes a control chip and a storage. The control chip controls the brightness of the lamp. The storage connected with a timing unit and stores a fine tuning signal. The fine tuning signal stored in the storage is generated and output to the adjust signal by turning off and turning on the adjustable power switch, the timing unit sets a preset time period in which the fine tuning signal maintains effective, and the fine tuning signal controls the lamp to have a brightness the same as the brightness when the lamp is turned off last time, or the brightness of the lamp is gradually increased to the preset brightness and then decreased.