An electronic apparatus and method of operating the electronic apparatus, to simultaneously display execution screen images of a first OS and a second OS are provided. The method includes obtaining screen image data of the second OS based on graphic data processed by the second OS; obtaining, by the first OS, at least one of control information related to the screen image data of the second OS and memory mapping information of the second OS; converting the screen image data of the second OS into graphic data of the first OS based on the at least one of the control information and the memory mapping information; generating screen image data of the first OS based on the graphic data of the first OS, the screen image data of the first OS including the screen image data of the second OS; and displaying the screen image data of the first OS.

A decoding device includes a display, a display buffer to store a current display image of what is currently visually presented on the display, a scanning engine to capture scanning images of objects, and a processor configured to: decode first barcodes carried on surfaces of objects in the scanning images to retrieve first data encoded within the first barcodes; provide the first data to an application routine as input; and in response to a screen capture of the current display image from the display buffer, perform operations including disrupt the decoding of the first barcodes carried on the surfaces of objects of the scanning images, decode a second barcode within the current display image to retrieve second data encoded within the second barcode, and provide the second data to the application routine as input.

A display device is provided, which includes an image buffer, a display module, and a display controller. The display controller is used for receiving an image signal from a host, and storing the image signal in the image buffer. In response to the display controller receiving a trigger signal, the display controller controls the display device to enter an image-rewinding mode. The display controller obtains a retrospective image that corresponds to a retrospective time point according to a user command, and plays the retrospective image on the display module.

Aspects presented herein relate to methods and devices for graphics processing including an apparatus, e.g., client device or a server. The apparatus may transmit, to a server at a beginning of a first time period, at least one first head pose associated with a position of the client device, the first time period being synchronized with the server. The apparatus may also receive, from the server during a second time period, at least one first frame including first content based on the at least one first head pose, the second time period being synchronized with the server. Further, the apparatus may display, upon receiving the at least one frame during the second time period, the at least one first frame including the first content.

One embodiment provides a graphics processor device that includes circuitry configured to detect a connection of a second display device to a display subsystem of the graphics processor while a first display device of the graphics subsystem is active, write pre-determined pixel data to a reserved portion of memory associated with the display subsystem, configure timings for the second display device while resources allocated to the first display device remain available to the first display device, display the pre-determined pixel data from the reserved portion of the memory on the second display device during reallocation of the resources of the display subsystem to enable output the framebuffer data to the second display device, and transition the second display device from the display of the pixel data in the reserved portion of the memory to the display of the framebuffer data after resources of the display subsystem are reallocated.

An apparatus for Gaussian filtering includes an image buffer for generating mask region data which includes pixel values of pixels located on a mask in an input image, and a Gaussian filter core for arranging the mask region data to generate pixel array values referring to an index array corresponding to a size of the mask, and applying Gaussian filtering to the pixel array values to generate Gaussian filtering values.

Methods are described for displaying video including variable frame rates. A method for displaying images includes receiving digital video data including video image data in a display system capable of displaying images at multiple frame rates; storing the digital video data in at least one frame buffer coupled to the display system; receiving in the digital video data ancillary data comprising at least configuration parameters indicating a current frame rate and a future frame rate; storing the parameters representative of a current frame rate in a first timing control buffer coupled to the display system; storing the parameters representative of a future frame rate in a second timing control buffer; displaying images from data in the frame buffer at the current frame rate; and upon detection of a swap condition, instantly displaying images from data in the frame buffer at the future frame rate. Additional methods and apparatus are described.

An image rendering apparatus includes a light source unit, an optical scanner, a scanner control unit configured to control a frequency for the optical scanner to scan the laser light in the main scanning direction, and a light source driving unit. The scanner control unit multiplies the frequency by n and the light source driving unit changes time intervals at which pixels are rendered on scanning lines in the main scanning direction to 1/nth and controls the light source unit in such a way that the light source unit renders a plurality of pixels corresponding to one scanning line at least once during n scans in the main scanning direction and in such a way that the light source unit will not render pixels on scanning line(s) other than the scanning lines on which the pixels have been rendered.

A method for shortening image delay includes, but is not limited to refreshing a current frame image from a frame buffer area to the display screen from top to bottom, and notifying an application to draw next frame image when the current frame image is refreshed to a predetermined row. The method further includes updating content in predetermined rows from top of next frame image drawn by the application to the frame buffer area of the system, and replacing content in the predetermined rows of the current frame image that have already been displayed The method further includes updating the content in the remaining rows of next frame image drawn by the application to the frame buffer area, and replacing content in the remaining rows of the current frame image that have already been displayed.

A memory control device of the present invention comprises a reset control section (32) for (i) suspending, at a time point where rp overtakes wp or wp overtakes rp or a time point immediately before that time point, a reading operation of data, and (ii) conducting again, at a predetermined time point where reading is to be resumed, the reading operation of the data from a position at which the reading operation has been started in a frame memory (31).