The present subject matter relates to displays. A display includes a plurality of pixel elements and a plurality of motors. Each motor is coupled to a pixel element to move the pixel element.

A liquid crystal display device includes a display panel with a switchable viewing angle and a driving circuit for driving the display panel. The display panel can switch between wide and narrow viewing angles. The driving circuit includes a display control unit, a viewing angle control unit, a viewing angle control voltage generating circuit, and a gamma voltage generating circuit. The viewing angle control unit is connected to the display control unit, the viewing angle control voltage generating circuit and the gamma voltage generating circuit. The display control unit is used to control the display panel to realize picture display. The viewing angle control unit is used to control the display panel to switch between wide viewing angle display and narrow viewing angle display.

In one example, a display device may include a liquid crystal panel and a direct type backlight unit having a light emitting diode (LED) package disposed behind the liquid crystal panel. The LED package may include a plurality of LEDs. The plurality of LEDs may have a first orientation towards the liquid crystal panel to provide a first viewing angle. Further, the display device may include a control unit to rotate the LED package to allow the plurality of LEDs to have a second orientation towards the liquid crystal panel to provide a second viewing angle. The second viewing angle may be narrower than the first viewing angle.

Systems, devices, and methods are disclosed for enabling private communication between head-mounted displays. A first user dons a first head-mounted display. The first head-mounted display authenticates that the first user is authorized to view information displayed by the first head-mounted display. In response to positive authentication, the first head-mounted display displays the information to the first user. The first user inputs a selection command via an input interface, such as, for example, gazing at particular information, to select some of the displayed information. The first head-mounted display generates a message based on the user selection, which may be encrypted by the first head-mounted display prior to transmission. The first head-mounted display transmits the message to a second head-mounted display, such that the second head-mounted display displays the message to an eye of a second user wearing the second head-mounted display.

A display apparatus includes a display; a communication circuit configured to communicate with a first external device or a second external device; a storage configured to store a list of a first content group designated to allow sharing by a first user of the first external device, a second content group designed to block sharing by the first user, a third content group designated to allow sharing by a second user of the second external device, and a fourth content group designated to block sharing by the second user; and a processor configured to: selectively process a content list based on detection of the first external device and detection of the second external device through the communication circuit.

Methods and systems for providing an advanced hardware system for a self-service kiosk are disclosed herein. In specific embodiments of the invention, a payment interface device is provided. The device includes an integrated touch display, a means for receiving payment information, and a casing holding the integrated touch display and the means for receiving payment information. The device also includes an applications microprocessor and a secure microprocessor located within the casing. The applications microprocessor instantiates an operating system and stores instructions for execution by the operating system for operative communication with a peripheral bar code scanner and a peripheral display. The secure microprocessor stores instructions to encrypt payment information for the system and is in operative communication with the means for receiving payment information.

The present invention provides a receiving circuit applied to an HDMI, wherein the receiving circuit includes a decoder, a frame key calculating circuit, a line key calculating circuit and a control circuit. In the operations of the receiving circuit, the decoder decodes a data stream to generate at least one image frame, the frame key calculating circuit is arranged to calculate a frame key according to the image frame, the line key calculating circuit is arranged to calculate a plurality of line keys according to the image frame, and the control circuit determines to turn off or turn on the line key calculating circuit according to whether or not the image frame is displayed on a display panel.

Methods and systems for providing an advanced hardware system for a self-service kiosk are disclosed herein. In specific embodiments of the invention, a payment interface device is provided. The device includes an integrated touch display, a means for receiving payment information, and a casing holding the integrated touch display and the means for receiving payment information. The device also includes an applications microprocessor and a secure microprocessor located within the casing. The applications microprocessor instantiates an operating system and stores instructions for execution by the operating system for operative communication with a peripheral bar code scanner and a peripheral display. The secure microprocessor stores instructions to encrypt payment information for the system and is in operative communication with the means for receiving payment information.

In a control circuit 500, a data transmission circuit 503 transmits image data Dp, and a code generation circuit 511 generates a first code CDa from the image data Dp. In a data line drive circuit 200, which is a drive signal generation circuit, a data reception circuit 201 receives the image data Dp, a code generation circuit 203 generates a second code CDb from the image data Dp, and a code transmission circuit 204 transmits the generated code as a code CDc. In the control circuit 500, a code reception circuit 512 receives the code CDc and outputs the received code CDc as the second code CDd, a comparison circuit 521 of an error detection circuit 520 detects an error in the image data DP received data line drive circuit 200 based on the first code CDa and the second code CDd.

A method for presenting image content in two operating modes, B1 for a viewing mode with a restricted viewing angle, and B2 for a viewing mode with an unrestricted viewing angle, comprising: providing a first image generator radiating image content into a restricted viewing angle; providing a second image generator radiating image content into an unrestricted viewing angle, wherein the second generator is in front of the first, and is partially transparent to light from the first, and deflects, on at least 50% of its surface, at least 90% of the light passed by it, by maximally 10°; switching on the first generator to start mode B1, wherein the second generator is switched to a transparent state and scatters only a negligible portion of light from the first generator, to retain the restricted viewing angle; and switching on the second generator to start mode B2.