Method and apparatus for setting screen brightness

FIELD: mobile devices.

SUBSTANCE: invention relates to the field of brightness control of a mobile device screen, namely, brightness control based on measurement of ambient light. To this end, light sensor receives the first brightness of ambient light in the environment where the terminal is located, and detects whether the light sensor is directed to the opposite side from the light source in the environment. Next, the first backlight brightness level is calculated according to the first brightness of ambient lighting, if the light sensor is directed to the opposite side from the light source, wherein the said first backlight brightness level is higher than the second backlight brightness level, which is calculated according to the first brightness of ambient lighting when the light sensor is directed toward the light source. And then the terminal backlight brightness is set to the first level of backlight brightness. Thus, the problem of calculating an inaccurate level of backlight brightness is solved when the light sensor is directed in the opposite direction from the light source, since the measured brightness of ambient lighting is lower when the light sensor is directed to the opposite side from the light source.

EFFECT: technical result is an increase in the accuracy of the backlight brightness level due to the determination of the relative position of the light sensor and the light source.

11 cl, 7 dwg

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention is referred to the sphere of lighting systems and optical receivers, and more specifically to the detection of data introduced into a light flux (output) of lighting systems. The invention suggests a system for the method detecting the first repeated sequence out of N symbols included into the first code, at that the first code is introduced into the light flux of the first light source of the lighting system, wherein the sequence contains at least N frames, and each frame out of at least N different frames is received with the total time of exposure containing one or more instants of the exposure, at that in each frame out of N different frames one or more instants of the exposure are in different time positions in regard to the first repeated sequence out of N symbols. The system contains a chamber to receive sequences of scene images through certain structures of an open/close state of the gate and a processing module to process the received sequence of images and to detect the repeated sequence out of N symbols.

EFFECT: development of the system for detecting data introduced into the light flux with high-frequency invisible modulation using standard commercial cameras in mobile telephones or web-cameras.

15 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: invention is referred to interactive illumination, specifically to control and creation of light effects such as regulation of light scenes based on position indication received from the input device, and more specifically to system and method for interactive illumination control in order to control and create light effects using position indicator. The main idea of this invention consists in provision of control over interactive illumination by combined indication of a position and approach of controlled light effects for illumination control in order to perfect creation of light effects such as regulation of light scenes, in particular scenes with large and heterogeneous infrastructures of illumination. One of the invention embodiments is referred to interactive illumination control system (10), which comprises interface (12) intended for receipt of data (14) specifying actual position (16) in real environment from input device (18) adapted for detection of position in the real environment by position pointing and receipt of data related to light effect (32), which is desired in the real position, and light effect controller (20) intended to convert actual position into virtual-type position of the real environment and to identify light effects available in virtual position.

EFFECT: control of interactive illumination and creation of light effects.

14 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: illumination device comprises a metal element 1, light-emitting device 2, on-off switch 3, low-voltage source 4 (accumulator-based), resistor 5, the first and second diodes 6, 7. An anode of the first diode 6 and a cathode of the second diode 7 are jointed and connected to the metal element 1. The metal element 1 should be rather made of tin with the surface area of at least 20 square centimetres. Additional charging of accumulators for a low-voltage source 4 feeding the light-emitting device 2 is made by energy generated during the rectification of electric oscillations occurring as a result of the heat motion of the metal element 1 particles.

EFFECT: development of a universal mobile portable and durable energy-saving illumination device with a long-term continuous operation.

5 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting engineering. Systems, networks, devices and methods for development, implementation and sharing of lighting circuits between controllable lighting networks are described. The network (101, 601, 701, 801, 808) according to the invention keeps the lighting circuits developed for network in the remote data storage (802). Other networks (301) address remote data storages for selection of existing circuits for implementation. Also the systems, networks, devices and methods for sharing by user choice between the controllable lighting networks are described. The networks according to the invention can get access to the shared remote data storage (112) for identification of user preferences at detection of a user by sensors in the network. In essence, individual lighting networks can use known user preferences or trained behaviours and environment conditions for more efficient adaptation to such behaviour, preferences or conditions.

EFFECT: improvement of efficient control of lighting.

15 cl, 13 dwg, 1 tbl, 1 ex

FIELD: electricity.

SUBSTANCE: invention is referred to lighting devices and control of the lighting devices operation. The result is attained due to the fact that each node out of a multitude of electric fixture nodes in the group of electric fixture nodes connected electrically may be used at a rated power level of a device; current consumption may be detected at least in the tested node of lighting fixtures out of the nodes of lighting fixtures; and the degree of reduced power for each node of lighting fixtures may be defined as a function of current consumption in the tested node of lighting fixtures.

EFFECT: invention ensures selective use of a group of lighting fixture nodes at a reduced power level in order to prevent an overload of the supply circuit and/or overload of one or more nodes of lighting fixtures in the group of the lighting fixture nodes.

21 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention refers to lighting engineering. The lighting system (100) contains many lighting fixtures (101a-d). Each lighting fixture is made with possibility to transmit the identification code ID in the emitted light. To guarantee sufficient registration of the identification codes during selection using the selection device (120) the system additionally contains a control unit (130), made with possibility to identify any lighting fixture which rated excitation is equal pr below the minimum pre-set value or is equal or above the maximum pre-set value. The control unit sets (or commands to excitation system to set) the rated excitation value of such identified lighting fixture to the set value to achieve the appropriate set light output of the lighting fixture ensuring signal sufficient to transmit the identification code ID.

EFFECT: increased efficiency of the light sources control.

11 cl, 7 dwg

FIELD: electricity.

SUBSTANCE: invention relates to lighting units. The light source 1 has LED module 2, at least, with one series circuit of light-emitting diodes. Terminals of the module 2 are connected to terminals of the power supply 5 which is stabilised by the output current. The power of the module 2 is greater than the power of the light source, and on separate light-emitting diodes the bridging pieces 6 are installed. Light-emitting diodes can be placed along the module surface and are connected in several series circuits, connected to each other in parallel, so that each light-emitting diode of one circuit has corresponding light-emitting diodes symmetric to it in other circuits, their similar terminals are unipotential and can be connected to each other. The light source power is regulated by switching on the ready LED module, without any changes in the light source.

EFFECT: simplification of regulation of the light source power.

5 cl, 4 dwg

FIELD: physics, control.

SUBSTANCE: invention relates to controlling the level of light in building illumination. The result is achieved due to that the level of light is controlled by a control system (2), which is operably linked to at least one interior sensor (3) for detecting the interior level of light; at least one electric light control device (4); at least one window drapery control device (5) for controlling the allowable level of daylight; and a processing unit (7) for processing given control values, which include a given value of the interior level of light. The level of electric light and the allowable level of daylight are controlled concurrently by the electric light control device and the window drapery control device.

EFFECT: providing an automatic power-saving system for controlling building illumination.

10 cl, 10 dwg

Lighting device // 2551109

FIELD: lighting.

SUBSTANCE: invention relates to lighting engineering. Lighting device (2) is made with possibility of light quality data inclusion in the light emitted by the lighting device. The light quality data relate to state of the lighting device (2), for example to end of its k service life. Light can be detected by the control device (3) being external for the lighting device (2). The control device (3) can further help in determination of the lighting device (2) state, as result the current maintenance operations for the lighting device (2) can be made. So, the servicing personnel can replace the lighting devices and/or light sources requiring maintenance according to state indication of each lighting device before any lighting device of the system will achieve its service life.

EFFECT: increased quality of the emitted light due to more accurate determination of the light source state.

8 cl, 5 dwg

Led radiator // 2550743

FIELD: electricity.

SUBSTANCE: LED radiator circuit is added by N keys and the ring impulse generator having N outputs, each of which is connected to the control inputs of keys, and cathodes of each of N light-emitting diodes through power electrodes of keys are connected to the negative output pole of the driver. The use of keys 4.1, 4.2, … 4.N and the ring impulse generator 3 ensures reliable functioning of the offered LED radiator when using only one driver that will significantly reduce its cost.

EFFECT: improvement of reliability of LED radiator and reduction of its cost.

1 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image signal processing systems. An image signal processing device is disclosed. The device includes a receiving unit for receiving an image signal and setting information for each given segment of the image signal including image type setting information to define whether the image signal represents a stereoscopic image. The device also includes gamma correction setting information to define a gamma correction value for the image signal. The device also includes a gamma correcting unit for performing gamma correction for the image signal based on the gamma correction setting information included in the setting information received by the receiving unit. The device also includes a stereoscopic image processing unit for selectively performing a process to display the stereoscopic image for the image signal corrected by the gamma correcting unit based on the image type setting information included in the setting information received by the receiving unit.

EFFECT: high quality of the displayed image owing to gamma correction of the image depending on the type of image.

9 cl, 16 dwg

FIELD: physics.

SUBSTANCE: disclosed is a method of selecting the display source light illumination level involving the following sequence of actions. Calculating a luminance channel from three-colour-channel image data for an input image. Calculating a compound colour channel from the three-colour-channel image data. Generating a two-dimensional histogram from the luminance channel and the compound colour channel. Converting the two-dimensional histogram to a one-dimensional histogram. Determining a performance factor using the one-dimensional histogram. Selecting the display source light illumination level based on the performance factor.

EFFECT: higher source light intensity or higher image quality at a fixed source light illumination level, improved dynamic range of specific image frequency bands, gray gradations and other parts of the image.

20 cl, 119 dwg

FIELD: information technology.

SUBSTANCE: to bring separate single-pixel indicators and separate logic pixels into conformity, a control table is used, which determines the order of displaying image data on the screen of a display device. One single-pixel indicator and one logic pixel correspond to an arbitrary element of the control table. An indicator of a defined colour is activated to generate light flux according to data of the same colour selected from the logic pixel. Selection of these data from the logic pixel and activation of that single-pixel indicator are repeated at high speed. The order of arrangement on the image data plane of geometric centres of non-overlapping or partially overlapping groups from the plurality of logic pixels coincides with the order of arrangement on the surface of the screen of the display device of conditional geometric centres of non-overlapping groups from the plurality of single-pixel indicators, which (groups from a plurality of single-pixel indicators) correspond to those groups from the plurality of logic pixels. Each group from the plurality of logic pixels mutually explicitly corresponds to a group from the plurality of single-pixel indicators. To increase brightness of the image displayed on the screen of the display device, that screen contains white-colour single-pixel indicators which are activated to generate light flux according to data calculated based on data contained in logic pixels which correspond to those white-colour single-pixel indicators.

EFFECT: broader functional capabilities, particularly display of raster data of a colour image on the screen of a display device, higher brightness of the image displayed on that screen.

16 cl, 21 dwg

FIELD: physics.

SUBSTANCE: distortion module reduces brightness of a backlight source according to the video signal histogram so that contrast can be a predetermined target contrast. A configuration projecting unit sets the gain according to the brightness level of the backlight source selected by the distortion module. During setup, the gain is attached to the control brightness level of the backlight source preset according to the video parameter value. If the video parameter value satisfies a preset condition, the input video signal is always amplified with the gain, otherwise the input video signal is amplified or not.

EFFECT: broader functional capabilities of the video display device, particularly preventing limitation of the white level, possibility of display with a sensation of lightness, for which the limitation of the white level is controlled, possibility of presenting lightness without full white filling and achieving a video image with an improved black level.

16 cl, 36 dwg

FIELD: selective lighting of electronic device displays.

SUBSTANCE: effect is achieved due to ensured detection of an event which causes renewal of display, and activation of lighting elements for lighting the display, and determining whether information that should be displayed is going to occupy a display area. If so, that display area is selectively lit by one or more lighting elements. Predetermined lighting period may depend on selected combination of area size, position of aforementioned area and/or priority, connected to the event.

EFFECT: reduced consumption of energy of batteries.

2 cl, 9 dwg

The invention relates to lighting and can be used as a power supply for an electroluminescent light panels

FIELD: selective lighting of electronic device displays.

SUBSTANCE: effect is achieved due to ensured detection of an event which causes renewal of display, and activation of lighting elements for lighting the display, and determining whether information that should be displayed is going to occupy a display area. If so, that display area is selectively lit by one or more lighting elements. Predetermined lighting period may depend on selected combination of area size, position of aforementioned area and/or priority, connected to the event.

EFFECT: reduced consumption of energy of batteries.

2 cl, 9 dwg

FIELD: physics.

SUBSTANCE: distortion module reduces brightness of a backlight source according to the video signal histogram so that contrast can be a predetermined target contrast. A configuration projecting unit sets the gain according to the brightness level of the backlight source selected by the distortion module. During setup, the gain is attached to the control brightness level of the backlight source preset according to the video parameter value. If the video parameter value satisfies a preset condition, the input video signal is always amplified with the gain, otherwise the input video signal is amplified or not.

EFFECT: broader functional capabilities of the video display device, particularly preventing limitation of the white level, possibility of display with a sensation of lightness, for which the limitation of the white level is controlled, possibility of presenting lightness without full white filling and achieving a video image with an improved black level.

16 cl, 36 dwg

FIELD: information technology.

SUBSTANCE: to bring separate single-pixel indicators and separate logic pixels into conformity, a control table is used, which determines the order of displaying image data on the screen of a display device. One single-pixel indicator and one logic pixel correspond to an arbitrary element of the control table. An indicator of a defined colour is activated to generate light flux according to data of the same colour selected from the logic pixel. Selection of these data from the logic pixel and activation of that single-pixel indicator are repeated at high speed. The order of arrangement on the image data plane of geometric centres of non-overlapping or partially overlapping groups from the plurality of logic pixels coincides with the order of arrangement on the surface of the screen of the display device of conditional geometric centres of non-overlapping groups from the plurality of single-pixel indicators, which (groups from a plurality of single-pixel indicators) correspond to those groups from the plurality of logic pixels. Each group from the plurality of logic pixels mutually explicitly corresponds to a group from the plurality of single-pixel indicators. To increase brightness of the image displayed on the screen of the display device, that screen contains white-colour single-pixel indicators which are activated to generate light flux according to data calculated based on data contained in logic pixels which correspond to those white-colour single-pixel indicators.

EFFECT: broader functional capabilities, particularly display of raster data of a colour image on the screen of a display device, higher brightness of the image displayed on that screen.

16 cl, 21 dwg

FIELD: physics.

SUBSTANCE: disclosed is a method of selecting the display source light illumination level involving the following sequence of actions. Calculating a luminance channel from three-colour-channel image data for an input image. Calculating a compound colour channel from the three-colour-channel image data. Generating a two-dimensional histogram from the luminance channel and the compound colour channel. Converting the two-dimensional histogram to a one-dimensional histogram. Determining a performance factor using the one-dimensional histogram. Selecting the display source light illumination level based on the performance factor.

EFFECT: higher source light intensity or higher image quality at a fixed source light illumination level, improved dynamic range of specific image frequency bands, gray gradations and other parts of the image.

20 cl, 119 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to image signal processing systems. An image signal processing device is disclosed. The device includes a receiving unit for receiving an image signal and setting information for each given segment of the image signal including image type setting information to define whether the image signal represents a stereoscopic image. The device also includes gamma correction setting information to define a gamma correction value for the image signal. The device also includes a gamma correcting unit for performing gamma correction for the image signal based on the gamma correction setting information included in the setting information received by the receiving unit. The device also includes a stereoscopic image processing unit for selectively performing a process to display the stereoscopic image for the image signal corrected by the gamma correcting unit based on the image type setting information included in the setting information received by the receiving unit.

EFFECT: high quality of the displayed image owing to gamma correction of the image depending on the type of image.

9 cl, 16 dwg

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