The present teaching relates to method, system, medium, and implementations for data transfer in LED display. A signal signaling a timing for a next data transfer is received. In response to the signal, a next data transfer instruction is obtained that instructs reading a bit-based image block of an image from a memory. The bit-based image block is transferred, according to the next data transfer instruction, from the memory via a bus connected thereto, to one of a pair of alternate buffers pointed to by a write buffer pointer. Then, the write buffer pointer is toggled to point to another of the pair of alternate buffers and the process repeats. The bit-based image blocks alternately stored in the buffers are later retrieved and displayed on the LED display.

Electric power consumed in display of image data is suppressed. The present invention includes: a command receiving section (10) which receives, from a host, a command indicative of whether or not an LCD (3) is to be caused to update an image displayed by the LCD (3); and a data processing section (40) carries out at least through-output or writing of the image data in a VRAM (50), with reference to (a) the command and (b) whether or not the image is to be updated in (i) a frame period in which the image data is received or (ii) a frame period coming next to the frame period.

Electric power consumed in display of image data is suppressed. The present invention includes: a command receiving section (10) which receives, from a host, a command indicative of whether or not an LCD (3) is to be caused to update an image displayed by the LCD (3); and a data processing section (40) carries out at least through-output or writing of the image data in a VRAM (50), with reference to (a) the command and (b) whether or not the image is to be updated in (i) a frame period in which the image data is received or (ii) a frame period coming next to the frame period.

An electronic device includes a first graphic composer that composes first graphic data associated with a layer of a first composition type, a second graphic composer that composes second graphic data associated with a layer of a second composition type different from the first composition type. The electronic device also includes a processor that sets a composition type of each of a plurality of layers associated with at least one application to the first or second composition type, composes first graphic data corresponding to a layer set to the first composition type using the first graphic composer, compose the composed graphic data in the frame buffer and second graphic data corresponding to a layer set to the second composition type using the second graphic composer, and display the composed graphic data through a display connected with the electronic device.

An electronic device includes a first graphic composer that composes first graphic data associated with a layer of a first composition type, a second graphic composer that composes second graphic data associated with a layer of a second composition type different from the first composition type. The electronic device also includes a processor that sets a composition type of each of a plurality of layers associated with at least one application to the first or second composition type, composes first graphic data corresponding to a layer set to the first composition type using the first graphic composer, compose the composed graphic data in the frame buffer and second graphic data corresponding to a layer set to the second composition type using the second graphic composer, and display the composed graphic data through a display connected with the electronic device.

A rendering system and method. The rendering system may perform rendering using a rendering context stored in an internal memory. When a rendering context to be used is not available in the internal memory, the rendering system may load the rendering context to be used from an external memory into the internal memory. When an insufficient amount of storage space is available in the internal memory, storage space may be secured by selectively deleting a rendering context from the internal memory, and a requested rendering context stored in the external memory may be loaded into the internal memory.

A rendering system and method. The rendering system may perform rendering using a rendering context stored in an internal memory. When a rendering context to be used is not available in the internal memory, the rendering system may load the rendering context to be used from an external memory into the internal memory. When an insufficient amount of storage space is available in the internal memory, storage space may be secured by selectively deleting a rendering context from the internal memory, and a requested rendering context stored in the external memory may be loaded into the internal memory.

An organic light emitting diode (“OLED”) display device, which operates in a variable frame mode, includes a display panel including a plurality of pixels, a power management circuit which supplies a power supply voltage to the plurality of pixels, and a controller which determines a panel load, a first representative gray level and a second representative gray level by analyzing input image data, determines an initial level of the power supply voltage based on the panel load and the first representative gray level, and determines a step level of the power supply voltage based on the panel load and the second representative gray level. The power management circuit generates the power supply voltage having the initial level during an active period, and gradually increases a voltage level of the power supply voltage from the initial level based on the step level during a variable blank period.

A video display method includes: acquiring at least one frame image corresponding to a current display time point in at least one source video; reading a stage configuration file, obtaining a stage modeling parameter of the stage space at the current display time point and a corresponding relationship between the at least one frame image and the stage space according to a specific stage related parameter in the stage configuration file; according to the stage modeling parameter and the corresponding relationship, processing the at least one frame image to obtain divided regions corresponding to all display screens included in the at least one stage plane; determining display contents corresponding to the divided regions, and copying the display contents to at least one target memory; and outputting a content in the at least one target memory to the at least one stage plane for display.

A video display method includes: acquiring at least one frame image corresponding to a current display time point in at least one source video; reading a stage configuration file, obtaining a stage modeling parameter of the stage space at the current display time point and a corresponding relationship between the at least one frame image and the stage space according to a specific stage related parameter in the stage configuration file; according to the stage modeling parameter and the corresponding relationship, processing the at least one frame image to obtain divided regions corresponding to all display screens included in the at least one stage plane; determining display contents corresponding to the divided regions, and copying the display contents to at least one target memory; and outputting a content in the at least one target memory to the at least one stage plane for display.