A video input interface receives input video data in a normal state. A control input interface receives character data for On Screen Display (OSD) in a setup state. An encoder encodes the character data and stores encoded compressed data in a memory in the setup state. A decoder receives an instruction signal designating the character data to be displayed, reads and decodes one piece of compressed data corresponding to the instruction signal from the memory, and reproduces the original character data in the normal state. A multiplexer superimposes character data on frame data and outputs the data.

A display device includes a display panel including a plurality of pixel rows, and a panel driver which drives the display panel. The panel driver determines whether input image data represents a still image. When the input image data represents the still image, the panel driver determines a flicker value of the still image, applies a compensation value corresponding to a carry shift interval to the flicker value, determines a driving frequency for the display panel based on the flicker value to which the compensation value is applied, and performs an alternate driving operation for the display panel at the driving frequency.

A display device is provided and includes signal line; pixel electrode; drive electrode opposed to pixel electrode; scanning lines; and display periods and a detection period in frame, wherein during one of display periods, common voltage is applied to drive electrode, scanning signal is applied to some scanning lines, pixel signal is applied to pixel electrode, wherein, during detection period, AC drive or pulse signal is applied to drive electrode, AC drive or pulse signal having pulses, wherein pulses during the detection period is less than number of some of scanning signal lines.

A display device is provided and includes signal line; pixel electrode; drive electrode opposed to pixel electrode; scanning lines; and display periods and a detection period in frame, wherein during one of display periods, common voltage is applied to drive electrode, scanning signal is applied to some scanning lines, pixel signal is applied to pixel electrode, wherein, during detection period, AC drive or pulse signal is applied to drive electrode, AC drive or pulse signal having pulses, wherein pulses during the detection period is less than number of some of scanning signal lines.

Examples are disclosed herein related to controlling a scanning mirror system. One example provides a display device, comprising a light source, a scanning mirror system configured to scan light from the light source in a first direction at a first, higher scan rate, and in a second direction at a second, lower scan rate, and a drive circuit configured to control the scanning mirror system to display video image data by providing a control signal to the scanning mirror system to control scanning in the second direction, and for each video image data frame of at least a subset of video image data frames, combining the control signal with an adjustment signal to adjust the scanning in the second direction, the adjustment signal comprising a low pass filtered signal with a cutoff frequency based on a lowest resonant frequency of the scanning mirror system in the second direction.

A background display device for a virtual image recording studio is configured to display, behind a real subject, a representation of a virtual background for a camera recording and comprises an active illumination apparatus that comprises at least one panel having a plurality of picture elements in an at least two-dimensional arrangement; a control device; and a controllable lens arrangement. The control device is configured to control the active illumination apparatus to display the representation of the virtual background, and is configured to change a beam characteristic of at least some of the plurality of picture elements by controlling the lens arrangement.

A background display device for a virtual image recording studio is configured to display, behind a real subject, a representation of a virtual background for a camera recording and comprises an active illumination apparatus that comprises at least one panel having a plurality of picture elements in an at least two-dimensional arrangement; a control device; and a controllable lens arrangement. The control device is configured to control the active illumination apparatus to display the representation of the virtual background, and is configured to change a beam characteristic of at least some of the plurality of picture elements by controlling the lens arrangement.

A display device is provided. The display device includes a display unit, a touch unit, a display driver configured to drive the display unit and including a synchronization signal generator, and a touch driver configured to drive the touch unit and including a synchronization signal receiver and a touch signal adjuster, wherein the synchronization signal generator is configured to generate a first synchronization signal supporting a frequency of a display signal applied to the display unit based on input frame frequency information and a second synchronization signal supporting the frequency of the display signal and including the frame frequency information, based on the frame frequency information and the first synchronization signal, and wherein the synchronization signal receiver is configured to receive the horizontal synchronization signal.

A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.

An object is to suppress deterioration of a displayed image even when a refresh rate is reduced in displaying a still image. A liquid crystal display device includes a pixel transistor electrically connected to a pixel electrode, and a capacitor having one electrode electrically connected to the pixel electrode and the other electrode electrically connected to a capacitor line. The pixel transistor is turned on and a voltage based on an image signal is supplied to the pixel electrode, and then, the pixel transistor is turned off so that a holding period during which the pixel electrode holds the voltage based on the image signal starts. A holding signal corresponding to change of the voltage based on the image signal in the pixel electrode in the holding period is supplied to the capacitor line so that a potential of the pixel electrode is constant.