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4102 results about "Display board" patented technology

Method and system for detecting classroom attention of student

ActiveCN104517102AUnderstanding Learning BehaviorAdjust teaching methodsCharacter and pattern recognitionDisplay boardComputer graphics (images)
The invention discloses a method for detecting classroom attention of a student. The method comprises the following steps: acquiring a classroom scene image; positioning a face and calculating an orientation pose of the face; converting a two-dimensional position of the face in the image into a two-dimensional position thereof in a sitting height datum plane in a classroom, and adding a sitting height priori value of the student to obtain a three-dimensional spatial position of the face in the classroom; through combination of the three-dimensional spatial position of the face and the orientation pose of the face, calculating an attention point of the student on a teaching presentation board. The invention further provides a device for implementing the method. The device comprises a first camera, an identity recognition module, a second camera and a monitoring and analysis module, wherein the first camera is used for acquiring a face image of the incoming student at an entrance of the classroom; the identity recognition module is used for acquiring the identity of the student through the face recognition; the second camera is used for acquiring the classroom scene image; the monitoring and analysis module is used for calculating the attention point of the student on the teaching presentation board. After application of the method and the system, the classroom attention of the student can be accurately monitored to help a teacher to adjust the teaching way in time so as to improve the teaching effect.
Owner:HUAZHONG NORMAL UNIV

Information display board

An information display board system especially adapted for use by travelers and tourists along an interstate highway. The display board is located at a rest stop or other location readily accessible by road travelers and displays a map of the road along which it is positioned and a listing of hotels/motels, points of interest and other lodgings in the region. ID/status indicators are provided which illuminate in one color, i.e., green, to indicate room availability and illuminate in a different color, i.e., red, to indicate room unavailability. Road alert indicators are positioned along the road map and are selectively illuminated to indicate delays or other road conditions. The illumination of the ID/status and road alert indicators are remotely changeable by hotel operators and the road authority, by directly calling a board manager. The board manager includes communication hardware in the form of a programmable computer and telephone control circuitry. A board manager receives information from the hotel operators and road authority as well as a central operator and controls the updating of the display boards via the communication hardware. Background information about the hotels and road locations can also be entered by the central operator and stored in the computer for later display to the operator.
Owner:TRAVEL BOARDS

Liquid crystal display device

A liquid crystal display device 1 of the invention has a liquid crystal display panel in which a liquid crystal layer 14 is provided between a TFT substrate 2 and a CF substrate 25 that has a common electrode 26, a light sensing component LS1 with a TFT photosensor that senses external light, and an illuminating means controlled according to the output of the light sensing component. The light sensing component is deployed at the periphery of the TFT substrate's display area DA and uses a thin film transistor as photosensor. A capacitor C is connected between source and drain electrodes SL, DL for such TFT photosensor. One of the capacitor's terminals is connected to a standard voltage source VS via a switch element SW, and the other to the common electrode 26. Voltage that is always lower than the voltage applied to the common electrode by an amount corresponding to a reverse bias voltage is applied to the gate electrode GL for the TFT photosensor. The capacitor's voltage a certain time after the switch element turns off is output. As a result, it will be possible to provide a liquid crystal display device in which the light sensing component incorporated in the liquid crystal display panel is not susceptible to the influence of the drive signals for the display panel, and in which the light sensing component does not induce deterioration of the liquid crystals.
Owner:JAPAN DISPLAY WEST

Motor producing quality monitoring and managing system and corresponding method

The invention discloses a motor producing quality monitoring and managing system and a corresponding method. The system comprises a quality monitoring subsystem and a material circulating subsystem. The quality monitoring subsystem comprises a workshop control center, a master control center, a workshop electronic display board, producing lines and unit quality detecting points. The material circulating subsystem comprises turnover boxes of products in process on the producing lines, turnover boxes of qualified products of the detecting points and defective product turnover box. Batch processing of turnover boxes with pasted RFID electronic labels is used during the producing process, and products with the same model number in the same batch use the same turnover box. The RFID electronic labels on the turnover boxes at the working positions are read and written, so that production information of each procedure is recorded, and when product reject ratio exceeds an alarming value, alarming information is timely generated. After production, the producing record of a product of each model number of each worker during the producing process is analyzed, so that next production arrangement is helped to be optimized, productivity is arranged reasonably, and the fact that producing quality is improved stably is guaranteed.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
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