Abstract: A proficiency detection method includes providing a question to a user, setting a scoring standard, detecting a handwriting response status of the user to the question, generating a proficiency score according to the handwriting response status and the scoring standard, and determining a proficiency of the user according to the proficiency score.

Abstract: A video conferencing system is disclosed. The video conferencing system includes a transmitter and a receiver. When the transmitter is coupled to a port of an information processing device, the transmitter communicates with the information processing device to determine whether the port of the information processing device has video output function. When the above determination result is no, the transmitter emits a wireless signal. The transmitter is coupled to a display device and used to receive the wireless signal and provide a default warning message to the display device.

Abstract: An image display method for handling a dynamic image signal including a plurality of continuous video frames, wherein the method includes steps as follows: Firstly, a first display parameter is output to display an Nth video frame of the plurality of continuous video frames according to a first attribute data of the Nth video frame. Then, at least one of (N+K)th video frame is detected, and when the at least one of the (N+K)th video frame has second attribute data, the first display parameter is output to display the at least one of the (N+K)th video frames. Subsequently, an (N+K+1)th video frame is detected, and when the (N+K+1)th video frame has the second attribute data, a second display parameter is output to display the (N+K+1)th video frame according to the second attribute data. Wherein, K is a positive integer greater than 1.

Abstract: A touch display screen includes a display panel, a touch-sensing part, a biosensor and a controller. The touch-sensing part is disposed on a light emitting side of the display panel and has a touch-sensing surface. The touch-sensing part includes a light-emitting device and a light receiver. The light-emitting device is used to provide at least one positioning light and at least one high-energy light. The light receiver is used to detect a change of the positioning light on the touch-sensing surface in response to a touch action and determine the position on which the touch action occurs on the touch-sensing surface. The biosensor is used to determine whether a living body getting close to the touch-sensing surface. The controller is used to drive the light-emitting device to selectively provide the positioning light and/or the high-energy light to the touch-sensing surface according to the determinations of the biosensor.

Abstract: A sound management system for a multimedia display apparatus includes: a first audio device built in a display apparatus to provide first audio, a second audio device separated from the display apparatus to provide second audio, a portable device separated from both the display and the second audio device, optionally being moved to the first or second position to receive and analyze either a first sound field at a first position or a second sound field at a second positions respectively formed by the first audio and the second audio, and a controller used to notify the first and/or second audio devices to adjust the first and/or second audio according to the analysis to synthesize either a first adjusted sound field at the first position or a second adjusted sound field at the second position with sound characteristics similar to that of a target sound audio.

Abstract: A resolution adjustment method applied to image display of a display device includes the display device providing a display menu to obtain a display layout composed of a plurality of display areas, the display device performing a resolution parameter setting on each display area according to the display layout and an original resolution parameter of the display device, the display device generating an updated product code and a plurality of updated resolution parameters according to an original product code and the original resolution parameter of the display device and each resolution parameter setting, and each image source reading the updated product code and the updated resolution parameter and outputting an image corresponding to the updated resolution parameter via a corresponding transmission port to the corresponding display area.

Abstract: A data authorization controlling and matching system includes a receiver, a plurality of display devices, and at least one transmitter. The receiver is used for receiving an image signal. The plurality of display devices are coupled to the receiver for displaying the image signal. The at least one transmitter is coupled to the receiver for outputting the image signal. After a member list saved in the receiver is configured, a data link between the receiver and the at least one transmitter is established. Hardware information of the at least one transmitter is saved in the receiver. The receiver automatically identifies the at least one transmitter according to the hardware information of the at least one transmitter. After the at least one transmitter is identified, the receiver sets authorization information of the at least one transmitter.

Abstract: A wireless communications pairing method includes providing a receiver and a first transmitter linked to the receiver, establishing a first link between the first transmitter and a second transmitter, transmitting pairing information from the first transmitter to the second transmitter through the first link, establishing a second link between the second transmitter and the receiver according to the pairing information after the second transmitter receives the pairing information, transmitting an image signal from an image signal source coupled to the second transmitter to the second transmitter after the second transmitter is triggered, processing the image signal by the second transmitter for transmitting the image signal from the second transmitter to the receiver, and controlling a display device for displaying an image by the receiver according to the image signal.

Abstract: A calibration method for splicing displays including initializing a plurality of displays, obtaining the gamuts of the displays, setting a display with the smallest gamut among the displays as the reference display, adjusting the color temperature, brightness and six-axis hue and saturation of the reference display respectively to a reference color temperature, a reference brightness and reference RGB coordinates, and adjusting the displays according to the reference color temperature, the reference brightness and the reference RGB coordinates.

Abstract: A touch control method includes steps of detecting a plurality of contact points being touched on a touch panel at a certain time; obtaining a plurality of distances between each two of the plurality of contact points; selecting a largest distance smaller than a predetermined distance among the distances; selecting the contact points falling into a first circular area formed by the two end points of the largest distance in the touch panel as a first contact point cluster and recognizing them as a first touch point; determine the first coordinate of the first touch point; selecting a second contact point cluster among the remaining contact points, by the same way, and recognizing them as a second touch point; obtaining the second coordinate of the second touch point; and performing data processing on a corresponding position of an image display area according to the first and/or second coordinate.

Abstract: An image adjusting method of a display apparatus includes steps as follows: A plurality of preset grayscale-brightness relationship curves are determined corresponding to a plurality of time periods of a day, respectively. A reference grayscale-brightness relationship curve is selected from the preset grayscale-brightness relationship curves according to an acquisition time of an image data, corresponding to one of the time periods. A real-time ambient light is acquired, and it is compared with at least one of a reference contrast and a reference ambient light brightness corresponding to the reference grayscale-brightness relationship curve. At least one other grayscale-brightness relationship curve is selected from the preset grayscale-brightness relationship curves according to a comparison result to at least partially replace the reference grayscale-brightness relationship curve for adjusting the image data. The adjusted image data is then displayed.

Abstract: A cursor controlling method includes: A starting position on which a touch signal triggered by an object on the touch panel is detected, and a starting coordinate of the starting position is calculated; a cursor is display at a first coordinate on a display screen corresponding to the starting coordinate. A first vector of the object moving from the starting position to a first steering position on the touch panel is detected. The cursor is moved along a first moving vector corresponding to the first vector, with a first speed on the display screen, until the object is stopped on a first steering position of the touch panel, to make the cursor ended up at a first virtual position having a first virtual coordinate. The cursor is shifted from the first virtual coordinate to a second coordinate on the display screen and corresponding to the first steering position.

Abstract: A parameter adjusting method is applied to a projector having an ambient light sensor, a database and a digital micromirror device. The parameter adjusting method includes analyzing a detection signal generated by the ambient light sensor to acquire an environmental light datum, comparing the environmental light datum with a lookup table of the database to compute at least one compensation parameter, and adjusting an amount of reflection light generated by the digital micromirror device in accordance with the at least one compensation parameter for controlling the projector to output a calibrated projection image in response to compensation of the environmental light datum.

Abstract: A conference system with low standby power consumption includes a transmitter, an image data source, a receiver, and a display device. The transmitter includes a battery for providing power, at least one link port for accessing data, and a processor coupled to the battery and the at least one link port. The image data source is used for transmitting the image data to the transmitter. The receiver is linked to the transmitter for receiving the image data. The display device is linked to the receiver for displaying the image data. When the transmitter and the image data source are electrically coupled, the processor ceases to use the battery of the transmitter and controls the image data source for providing power to the transmitter. When the transmitter and the image data source are separated, the processor uses the battery of the transmitter for driving firmware of the transmitter.

Abstract: A parameter adjusting method is applied to a projector having an ambient light sensor, a database and a digital micromirror device. The parameter adjusting method includes analyzing a detection signal generated by the ambient light sensor to acquire an environmental light datum, comparing the environmental light datum with a lookup table of the database to compute at least one compensation parameter, and adjusting an amount of reflection light generated by the digital micromirror device in accordance with the at least one compensation parameter for controlling the projector to output a calibrated projection image in response to compensation of the environmental light datum.

Abstract: A display system and a display device are provided. The display system includes a host device, a display device and an input device. The display device includes a display controller, a display panel and a USB hub. The display controller processes an image signal provided by the host device with a first processing mode and displays the processed image signal on the display panel. The USB hub is coupled to the host device. The input device is coupled to the USB hub. The input device forms a first signal input path with the host device via the USB hub and a second signal input path with the display controller via a signal line. The input device transmits the control signal via the signal line to cause the display controller to process the image signal with a second processing mode and display the processed image signal on the display panel.

Abstract: A projection device, a projection system and a method for calibrating projected image are provided. The projection device and an external projection device the same image source and respectively project an image and another image corresponding to the image source. The same portion of the image source where the two images overlap each other forms an overlapping area. The projection device includes a lens, a light shielding member and a processor. The light shielding member is disposed on the lens. The processor controls the light shielding member to selectively shade a partial area of the lens according to the brightness of the image source, wherein the partial area corresponds to the overlapping area.

Abstract: A shelter and a sheltering apparatus of adjusting an assembly angle are applied for an assembling display apparatus with a first display and a second display. The shelter includes a bridging component, a first top member and a second top member. The bridging component includes a first lateral member and a second lateral member. The first lateral member is detachably connected to the first display. The second lateral member is rotatably assembled with the first lateral member and detachably connected to the second display. The first top member is disposed on an upper end of the first lateral member. The second top member is disposed on an upper end of second lateral member, and partly overlapped with the first top member in a variable manner for matching relative rotation between the first lateral member and the second lateral member.

Abstract: A wireless projecting control method includes setting at least one operation restriction, communicating a transmitter with a receiver or a communication device for executing at least one restricted operation by the transmitter or the receiver, and selectively or restrictedly projecting an image signal to a display device by the receiver after the transmitter or the receiver executes the at least one restricted operation. The image signal is generated by the communication device. The transmitter is used for transmitting the image signal to the receiver according to the at least one operation restriction.

Abstract: A method for expanding functions of a conference system includes providing a first circuit board and a second circuit board disposed in the receiver, receiving a first wireless packet transmitted from the first transmitter merely through a second communication module of the second circuit board, controlling the second communication module for performing an unpacking process of the first wireless packet by a second processor of the second circuit board to generate first compressed media data, generating a first command signal by the second processor of the second circuit board for controlling a first processor of the first circuit board to receive the first compressed media data through a data channel, and decompressing the first compressed media data by the first processor for acquiring first media contents of the first transmitter.