Abstract: The PET-film-bonded type transparent anti-UV projection screen includes a PET film layer, an adhesive layer and a transparent supporting layer which are sequentially stacked from top to bottom. The PET film layer is prepared by uniformly mixing PET resin, an antioxidant, a light stabilizer and a nanoparticle dispersion in a molten state, pre-crystallizing and drying the mixture, and then extruding, stretching and molding the mixture. The production method for the PET-film-bonded type transparent anti-UV projection screen includes preparing a nanoparticle dispersion; preparing a PET film; and performing coating and bonding the film.

Abstract: A system monitors cinema playing content and generates movie-viewing statistics. The method includes, among other steps: acquiring screen brightness and projection ambient brightness or a video; comparing the acquired screen brightness and the projection ambient brightness or discriminating the video; activating, after it is determined that a film begins to be projected, an acquisition and recognition device of the terminal equipment to acquire the played audio and video content and acquire an auditorium infrared picture during projection; comparing, by the acquisition and recognition device, the acquired audio and video content with a monitoring database to obtain the projected content, recognizing, by the acquisition and recognition device, human bodies in the acquired auditorium infrared picture during projection to count the number of audiences; and associating or combining, by the acquisition and recognition device, the projected content obtained through comparison with the counted number of audiences.

Abstract: A light source device for a fiber optic illumination system comprises a solid-state light emitting element having an emission surface shaped in quadrate, a light collection lens system with a positive power comprising at least a plano-convex lens, and a reflection member having a cylindrical reflection surface therein, all of which are arranged in this order coaxially with one another along a principal axis passing a center of the light emitting element, wherein the plano-convex lens is placed with a plane surface thereof directly facing and located at a space distance apart from the emission surface so as to form a virtual image of the emission surface.

Abstract: A motion detection method, apparatus and system are disclosed in the present invention, which relates to the video image processing field. The present invention can effectively overcome the influence of the background on motion detection and the problem of object “conglutination” to avoid false detection, thereby accomplishing object detection in complex scenes with a high precision. The motion detection method disclosed in embodiments of the present invention comprises: acquiring detection information of the background scene and detection information of the current scene, wherein the current scene is a scene comprising an object(s) to be detected and the same background scene; and calculating the object(s) to be detected according to the detection information of the background scene and the detection information of the current scene. The present invention is applicable to any scenes where moving objects need to be detected, e.g.

Abstract: A real-time ring-loop surveillance network system is provided. By using digital communication network, multiple channels of media data and control data are transmitted in a ring-loop. The media data includes any forms of digital audio and video data, which is transmitted through 802.3/802.3u physical layer interface. The media data reaches all the stations in the network at the same time, and the number of the stations in the system depends on the system requirements. The number of the channels depends on the transceiver's speed. The present invention defines frames to encompass the media data and control data for transmission. The point-to-point delay is less than 0.15 ms. When 32 stations are connected in a ring-loop, the maximum delay is less than 5 ms. A backup mechanism is also included to detect and automatically switch to maintain the normal operation of the surveillance network system. The monitor signals are also encompassed in frames transmitted in the same network.

Abstract: The invention has disclosed a method for user identity tracking, and is suitable for wireless Internet. Precisely, mobile phone client end or WAP website sends user access request and parameters; user identity recognition server judges whether the user access request is for the first time; if so, it will distribute a unique user identifier, insert the user identifier in the returned information, and guide the mobile phone user to access the user identity recognition server based on the user identifier; read the recognition file on mobile phone, and complete the recognition of mobile phone user identity according to user identifier. With the technical proposal of the invention adopted, it is possible to realize the recognition on user identity through distributing the user identifier or through the corresponding relations between user identifier and users' mobile phone number.

Abstract: A real-time ring-loop surveillance network system is provided. By using digital communication network, multiple channels of media data and control data are transmitted in a ring-loop. The media data includes any forms of digital audio and video data, which is transmitted through 802.3/802.3u physical layer interface. The media data reaches all the stations in the network at the same time, and the number of the stations in the system depends on the system requirements. The number of the channels depends on the transceiver's speed. The present invention defines frames to encompass the media data and control data for transmission. The point-to-point delay is less than 0.15 ms. When 32 stations are connected in a ring-loop, the maximum delay is less than 5 ms. A backup mechanism is also included to detect and automatically switch to maintain the normal operation of the surveillance network system. The monitor signals are also encompassed in frames transmitted in the same network.