Embodiments of the invention are related to a system and method of controlling a display of an image stream. The system may include a memory to store the image stream; the image stream may comprise a plurality of image frames. The system may further include a processor configured to execute the method. The moving image stream may be displayed to a user in an image stream display area of a screen and a frame rate control interface may be generated on a speed control area of the screen, such that the image stream display area is horizontally adjacent to the speed control area. An indication of a desired frame rate for displaying the image stream of the image frames may be received from the user, in that the frame rate may be selected according to a location of a pointing indicator in the speed control area.

There are provided an HMD system capable of improving operability by realizing various input operations on a head mounted display (HMD), an HMD used therefor, and an operation method therefor. Therefore, in the HMD system, an HMD allowing an operation input from an external operation device is connected to a plurality of external operation devices. The external operation device is a device worn on the body of a user who uses the HMD, includes a sensor for detecting movement, and transmits operation information by moving the external operation device. The HMD includes a short-range wireless communication unit and an operation control unit. Operation information from the plurality of external operation devices is received through the short-range wireless communication unit. The operation control unit executes a predetermined operation based on the operation information received from the plurality of external operation devices.

A method for operating an input device. An input element of the input device is manually operated to perform an input into a computer device operatively connected to the input device. Mobility of the input element can be selectively delayed, blocked, and enabled by a controllable magneto-rheological braking device. The mobility of the input element is selectively adjusted by the computer device at least as a function of at least one input condition stored in the computer device. The input device may be a computer mouse.

At least a part of a movable switch is placed on a detection surface that is capable of detecting a variation in electrostatic capacitance caused by an approach or contact of a user's finger. A knob is configured to be displaced relative to the detection surface in accordance with an operation of the finger. A first conductive portion is arranged at a position in the knob where is separated from the detection surface. A plurality of second conductive portions are arranged at positions in the knob where are closer to the detection surface than the first conductive portion. A conductive path electrically connects the first conductive portion and the second conductive portions.

A method for predicting a drawn point of a stylus includes obtaining a plurality of reported points of a stylus, determining a reported point prediction model based on the reported points, performing prediction using the reported point prediction model to obtain at least one predicted point, and drawing the at least one predicted point and displaying the drawn predicted point.

A knock-type electronic pen including a tubular casing, a first position indicator such as a written input indicator, a second position indicator such as an eraser, a knock cam mechanism, and a holding mechanism. The knock cam mechanism includes a knock portion including a part protruding outward from an opening at a second end of the tubular casing, and is configured to cause a tip of the first position indicator to protrude from, or be housed within, an opening at a first end of the tubular casing. The holding mechanism, in the state in which the tip of the first position indicator protrudes from the opening at the first end, returns the knock portion pushed into the tubular casing to a state of protruding from the opening at the second end such that at least a tip of the second position indicator protrudes outward.

Provided is a projection screen. The projection screen includes a first transparent cover plate, a transparent touch panel, and a first nanoparticle layer, wherein the first nanoparticle layer and the first transparent cover plate are sequentially laminated on one side of the transparent touch panel, and the first nanoparticle layer comprises a plurality of dispersed nanoparticles of different particle sizes. A method for manufacturing a projection screen, a projection display system, and a projection display method are also provided.

A device such as a stylus may have a color sensor. The color sensor may have a color sensing light detector having a plurality of photodetectors each of which measures light for a different respective color channel. The color sensor may also have a light emitter. The light emitter may have an adjustable light spectrum. The light spectrum may be adjusted during color sensing measurements using information such as ambient light color measurements made with a color ambient light sensor that has a plurality of photodetectors each of which measures light for a different respective color channel. An inertial measurement unit may be used to measure the angular orientation between the stylus and an external object during color measurements. Arrangements in which the light emitter is modulated during color sensing may also be used. Measurements from the stylus may be transmitted wirelessly to external equipment.

Computing devices and methods for producing vibrations in computing devices are disclosed. In one example, a computing device comprises a chassis that includes a trackpad comprising a printed circuit board. A haptic actuator assembly comprises at least one conductive coil formed on or affixed to the printed circuit board, and at least one magnet rigidly affixed to the chassis. The magnet is spaced from and not mechanically coupled to the at least one conductive coil. A memory stores instructions executable by a processor to receive a haptic event requests, determine that the trackpad is not in use, and at least on condition of receiving the haptic event request and determining that the trackpad is not in use, cause a driver signal to be sent to the conductive coil(s) to cause the at least one magnet to produce user-perceptible vibrations in the chassis beyond the trackpad.

Systems, methods, and non-transitory media are provided for using a wearable ring device for extended reality (XR) functionalities. An example wearable device can include a structure defining a receiving space configured to receive a finger associated with a user, the structure including a first surface configured to contact the finger received via the receiving space; one or more sensors integrated into the structure, the one or more sensors being configured to detect a rotation of at least a portion of the structure about a longitudinal axis of the receiving space; and a wireless transmitter configured to send, to an electronic device, data based on the rotation.