A method for controlling a display apparatus, the method comprising, displaying, in a first mode, a first image based on received image data having first resolution on a display surface at a first display size corresponding to the first resolution, displaying, in a second mode, a second image based on the image data having second resolution smaller than the first resolution on the display surface at a second display size corresponding to the second resolution, converting, when the display apparatus accepts the operation of increasing the second display size in the second mode, the first resolution of image data to third resolution corresponding to the operation, displaying a third image based on the image data having the third resolution on the display surface.

A display device including a beam emitter and a display panel is provided. The beam emitter emits a first beam; the display panel includes a display screen body and a light control layer. The light control layer includes photosensitive devices that outputs a sensing signal according to a sensing result, a control module for controlling turning on and turning off of the photosensitive devices, and a reading module for reading the sensing signal output by the photosensitive devices and determining a projection position of the first beam on the display panel according to the sensing signal.

An image processing method and apparatus for a smart pen, and an electronic device are provided in embodiments of the present disclosure, and belong to the technical field of data processing. The method comprises: monitoring a working state of a second pressure switch provided at a pen tip of a smart pen after a first pressure switch of the smart pen is in a closed state; controlling an infrared transceiver circuit on the smart pen to send an infrared signal to an area where the smart pen writes; acquiring a lightweight network model preset in the smart pen, so as to perform feature extraction processing on an original image; performing classification processing on a feature matrix by using a fully connected layer in the lightweight network model, to obtain a trajectory classification result; and displaying a writing trajectory of the smart pen on a target object in real time.

An electronic pen includes a coil wound around a magnetic core, a first capacitor forming a resonance circuit with the coil, a rectifier circuit which, in operation, rectifies an alternating-current signal received by the resonance circuit, the rectifier circuit including a second capacitor, a voltage detecting circuit which, in operation, detects whether a rectified output voltage across the second capacitor of the rectifier circuit exceeds a predetermined value, a third capacitor having a capacitance that is larger than a capacitance of the second capacitor, and a charge control circuit which, in operation, controls supply of a charging current to the third capacitor by the rectified output voltage. The charge control circuit in operation, causes the charging current to be fed to the third capacitor by the rectified output voltage when the voltage detection circuit detects that the rectified output voltage obtained across the second capacitor exceeds the predetermined value.

A display apparatus includes circuitry to receive a handwriting input within a frame of a line displayed on a display. The handwriting input is corresponding to a part of a character string including one or more characters. The circuitry obtains, based on the handwriting input, a character size. The circuitry expands the frame in a direction of the handwriting input, based on the character size and space currently being left between the handwriting input and a side of the frame in the direction of the handwriting input to receive another handwriting input.

An apparatus and methods for remote controlling of mouse cursor and imitating its function is disclosed. The apparatus comprises of a camera module, one or more processors, one or more memories, a communication interface, a switch for setting work mode and image processing programs stored in the memories. This apparatus has two working modes which are set by the switch: camera mode and mouse mode. In camera mode, the apparatus works as a regular digital camera. In mouse mode, the apparatus works with a laser pointer to play functions of a mouse. It captures the image of a target area which is overlaid with the beam spot of the laser pointer, then analyzes the trace pattern and detects the dynamic properties of the beam spot characterized by primary and secondary attributes, and further performs predefined mouse when communicating with a computer through wired or wireless communication.

Aspects of the present invention relate to providing see-through computer display optics.

Methods, systems and computer program products for emulating a laser pointer with a mobile device are provided. Aspects include determining a position of the mobile device in a room having a display screen, determining a location of the display screen in the room, and determining an orientation of the mobile device. Aspects also include calculating a line vector originating from the mobile device and modifying a display on the display screen to include an indicator of a point at which the line vector intersects the display screen based on a determination that the line vector intersects the display screen.

Embodiments relate generally to electrical/electronic hardware, computer software, wired and wireless network communications, portable, wearable, and stationary media devices. RF transceivers and/or audio system in each media device may be used to wirelessly communicate between media devices and allow configuration and other data to be wirelessly transmitted from one media device to another media device. The proximity detection system may be configured to detect a presence of a user or multiple users and upon detecting presence, access content on a user device, and record the content while also playing back the content on the media device. One or more user devices in proximity of the media device post detection may wirelessly communicate with the media device and the media device may orchestrate handling and/or queuing of content from those devices or from a wirelessly accessible location such as the Cloud, Internet, NAS, Flash memory, or other wireless sources.

A display system includes a display device and an input device. The display device includes a display for displaying images, an image signal processor for displaying images on the display, and a receiver for receiving signals from the input device. The input device includes a detector that detects a target color at a partial area of the display so as to acquire target color information, a storage unit for storing registered color information, a color determination processor that carries out a color determination process for determining whether or not the target color information matches the registered color information so as to generate a color determination signal, and a transmitter for transmitting the color determination signal. The image signal processor carries out a color change process of sequentially changing target colors but suspends the color change process when the receiver receives the color determination signal.