Abstract: This application relates to the field of lighting, and discloses an LED filament. The LED filament includes an LED chip unit, a light conversion layer, and an electrode. The light conversion layer covers the LED chip unit and part of the electrode, and a color of a light emitted by the LED filament after lighting is different from a color of the light conversion layer. This application has the characteristics of uniform light emission and good heat dissipation effect.

Abstract: A voice coil motor held immobile by magnetic attraction when not in use for photography purposes includes a base, a magnet fixed thereto, a carrier, a magnetic member, and a coil. The magnetic member is fixed to the carrier and is attracted by a permanent magnetic field (first MF) of the magnet on the base. The coil is fixed to the carrier and the magnetic member. When the voice coil motor is powered on, the coil generates a second magnetic field (second MF) opposing the first MF. The second MF reduces or eliminates the attractive force of the first MF of the magnet, to separate the carrier and its fittings and allow them to work freely. A lens module and an electronic device are further provided.

Abstract: A system may include a memory and a processor in communication with the memory. The processor may be configured to perform operations. The operations may include synchronizing a policy between a primary node and a compute node and maintaining a resource registry on a client of the primary node. The operations may include communicating a direct communication between the client and the compute node, and the direct communication may include a first task. The operations may include returning a first result for the first task directly from the compute node to the client.

Abstract: The present invention relates to method, system and electronic communications device for providing group scan for mobile devices located in overlapping active geofences.

Abstract: The present invention relates to method, system and electronic communications device for providing group scan for mobile devices located in overlapping active geofences.

Abstract: An exemplary flat panel display includes a micro processing unit, a display signal input socket defining a safeguarding terminal, an input interface configured for a user to input a user code, a first storage unit storing a security code, and a second storage unit storing a safeguarding mark. The micro processing unit is configured to monitor a voltage applied to the safeguarding terminal, detect a status of the safeguarding mark, compare the user code with the security code according to the status of the safeguarding mark, and output a control signal according to a result of the comparison.

Abstract: A lighting network (100) and methods therefore are disclosed. The lighting network (100) includes a plurality of lighting units (LU0-LU10) each including a wireless receiver (12) arranged to obtain a wireless signal from an object (30) to be tracked and a communication interface (14). The lighting network (100) also includes a control unit (20) including a communication unit (22) that is arranged to communicate with at least one of the plurality of lighting units (LU0-LU10) to obtain tracking data based upon the wireless signal. The tracking data is processed by the control unit (20) using a topology table (FIG. 1 b). The topology table (FIG. 1 b) is based upon the geographic locations of the plurality of lighting units and mapping data.

Abstract: An exemplary embodiment of method of establishing a gamma table using a system includes following steps. Providing a signal generator, a display device, and a color analyzer, consists of measuring luminance values of the images corresponding to a plurality of reference sampling points. Obtaining a luminance characteristic curve based on the reference sampling points and luminance values using Bezier curve interpolation. Locating the gray scales on the luminance characteristic curve with the same luminance values as the gray scales of a standard gamma table. And establishing a gamma table by comparing the gray scales of the standard gamma curve and the luminance characteristic curve.

Abstract: An LCD includes an OSD system and a gamma correction circuit. The OSD system includes an input system for setting gamma values. The gamma correction circuit includes a look-up table. The look-up table includes a plurality of sub-look-up tables, each corresponding to a gamma value. Each sub-look-up table stores a plurality of original gray level values and a plurality of corrected gray level values corresponding to the original gray level values. The gamma correction-circuit receives an original gray level value corresponding to a video signal, and searches a sub-look-up table corresponding to a set gamma value for a corresponding corrected gray level value. A method for controlling the LCD is also provided.

Abstract: A storage method for a gamma value look-up table comprises storing gamma values corresponding to grays exceeding or equaling a 33rd gray in the gamma value look-up table, and calculating gamma values corresponding to a 1st gray to a 32nd gray by a formula.

Abstract: An exemplary method for establishing a gamma correction table for a liquid crystal display includes: providing a liquid crystal display, a signal generator, and a color analyzer, the liquid crystal display comprising a predetermined gamma correction table; invalidating a predetermined gamma correction table of the liquid crystal display; initializing the liquid crystal display, the signal generator, and the color analyzer; measuring 2n (n is a natural number) reference gray scales of a single-colored image; obtaining a single-colored correction curve relating to luminance values corresponding the reference gray scales; obtaining an ideal single-colored gamma curve; storing 256 gray scales corresponding to the luminance values that most close to the luminance values of gray scale 0 to gray scale 255; and establishing a gamma correction table.

Abstract: An exemplary embodiment of method of establishing a gamma table using a system includes following steps. Providing a signal generator, a display device, and a color analyzer, consists of measuring luminance values of the images corresponding to a plurality of reference sampling points. Obtaining a luminance characteristic curve based on the reference sampling points and luminance values using Bezier curve interpolation. Locating the gray scales on the luminance characteristic curve with the same luminance values as the gray scales of a standard gamma table. And establishing a gamma table by comparing the gray scales of the standard gamma curve and the luminance characteristic curve.

Abstract: A color enhancement method for a display device includes obtaining color information of a first display frame from the display, determining a dominant color according to the color information obtained, and color enhancing a second display frame following the first display frame by adjusting the second display frame according to the dominant color. The dominant color is obtained by analyzing the preceding display frame and dynamically enhancing the second display frame.

Abstract: An exemplary method for cutting a first printed circuit board (PCB) into a plurality of second PCBs, the method includes: providing a plurality of first dimension parameters of the first PCB; providing a plurality of second dimension parameters and an interval parameter of the second PCB; performing a process for selecting a best calculating mode and a corresponding cutting parameter according to the first dimension parameters, the second dimension parameters, and the interval parameter; calculating coordinate parameters of each second PCB; and cutting the first PCB into the plurality of second PCBs.

Abstract: An exemplary display system includes a flat panel display and a host connectable to the flat panel display. The flat panel display includes a first storage unit including a first security code stored therein, a register, and a micro processing unit. The host includes a second storage unit including a second security code stored therein, and a central processing unit. The central processing unit is configured for converting the second security code to a digital signal and sending the digital signal to the register. The micro processing unit is configured to read and compare the first security code with the digital signal in the register, and output a control signal according to a result of said comparison.

Abstract: An LCD includes an OSD system and a gamma correction circuit. The OSD system includes an input system for setting gamma values. The gamma correction circuit includes a look-up table. The look-up table includes a plurality of sub-look-up tables, each corresponding to a gamma value. Each sub-look-up table stores a plurality of original gray level values and a plurality of corrected gray level values corresponding to the original gray level values. The gamma correction-circuit receives an original gray level value corresponding to a video signal, and searches a sub-look-up table corresponding to a set gamma value for a corresponding corrected gray level value. A method for controlling the LCD is also provided.

Abstract: A storage method for a gamma value look-up table comprises storing gamma values corresponding to grays exceeding or equaling a 33rd gray in the gamma value look-up table, and calculating gamma values corresponding to a 1st gray to a 32nd gray by a formula.

Abstract: A system and method for controlling a display device includes a display panel, an on-screen display (OSD) system, and a gamma correction circuit. The OSD system includes an input system configured for adjusting a gamma value. The gamma correction circuit is configured for receiving a plurality of original grays, and outputting a plurality of correction grays according to the adjusted gamma value and the original grays to the display panel.

Abstract: An apparatus for adjusting a pixel clock frequency based on a phase locked loop (PLL) includes: a pixel clock generator (11) for generating an actual pixel clock having an actual frequency; a division frequency counter (12) for dividing the actual pixel clock into several pixel clocks having different frequency ranges by means of multiplying the actual frequency of the actual pixel clock by a multiplier; a reference frequency counter (13) for dividing the actual pixel clock by means of lowering the actual frequency of the actual pixel clock, and generating a reference frequency; a reactive frequency counter (14) for dividing the actual pixel clock by means of heightening the actual frequency of the actual pixel clock, and generating a reactive frequency; a PLL circuit (16) for integrating the reference frequency and the reactive frequency to generate a required pixel clock having a required frequency. A related method is also disclosed.

Abstract: An exemplary flat panel display includes a micro processing unit, a display signal input socket defining a safeguarding terminal, an input interface configured for a user to input a user code, a first storage unit storing a security code, and a second storage unit storing a safeguarding mark. The micro processing unit is configured to monitor a voltage applied to the safeguarding terminal, detect a status of the safeguarding mark, compare the user code with the security code according to the status of the safeguarding mark, and output a control signal according to a result of the comparison.