An apparatus includes a vibration plate including an area and a bezel area surrounding the area, at least one vibration generator overlapping the area, and at least one exciter overlapping the bezel area. The at least one vibration generator does not overlap the bezel area. The at least one exciter includes a piezoelectric element. Each of the at least one vibration generator and the at least one exciter is configured to vibrate the vibration plate to generate sound.

A surveillance network is disclosed herein. The surveillance network includes a processor, a plurality of video cameras, a student-monitor, and an instructor-monitor. The processor can transmit and receive digital information. The video cameras can communicate digitally with the processor and can record video and transmit the video signal to the processor. The student-monitor and the instructor-monitor are each also able to communicate digitally with the processor and may each play back video as received from the processor. The processor may transmit either a live or recorded video signal to both the student-monitor and the instructor-monitor, such that the student-monitor and the instructor-monitor receive and play back video simultaneously.

A surveillance network is disclosed herein. The surveillance network includes a processor, a plurality of video cameras, a student-monitor, and an instructor-monitor. The processor can transmit and receive digital information. The video cameras can communicate digitally with the processor and can record video and transmit the video signal to the processor. The student-monitor and the instructor-monitor are each also able to communicate digitally with the processor and may each play back video as received from the processor. The processor may transmit either a live or recorded video signal to both the student-monitor and the instructor-monitor, such that the student-monitor and the instructor-monitor receive and play back video simultaneously.

A system comprising cascaded standardized hot-pluggable transceiving units for providing scaling and positioning functionalities. A first layer comprises a plurality of transceiving units implementing a scaling functionality followed by a pre-positioning functionality. A second layer comprises a transceiving unit implementing a scaling functionality followed by a positioning functionality. Source video streams are scaled by the first layer, and further combined to generate primary mosaiced video streams. The primary mosaiced video streams are scaled and combined by the second layer to generate a secondary mosaiced video stream. Alternatively, the first layer comprises at least one transceiving unit only implementing the scaling functionality. Source video streams are scaled by the first layer to generate primary scaled video streams. The primary scaled video streams are scaled and combined by the second layer to generate a mosaiced video stream.

A system comprising cascaded standardized hot-pluggable transceiving units for providing scaling and positioning functionalities. A first layer comprises a plurality of transceiving units implementing a scaling functionality followed by a pre-positioning functionality. A second layer comprises a transceiving unit implementing a scaling functionality followed by a positioning functionality. Source video streams are scaled by the first layer, and further combined to generate primary mosaiced video streams. The primary mosaiced video streams are scaled and combined by the second layer to generate a secondary mosaiced video stream. Alternatively, the first layer comprises at least one transceiving unit only implementing the scaling functionality. Source video streams are scaled by the first layer to generate primary scaled video streams. The primary scaled video streams are scaled and combined by the second layer to generate a mosaiced video stream.

A system comprising cascaded standardized hot-pluggable transceiving units for providing a multiviewer functionality. A first layer comprises a plurality of transceiving units implementing a scaling functionality followed by a pre-positioning functionality. A second layer comprises a transceiving unit implementing a positioning functionality. Source video streams are scaled by the first layer, and further combined to generate primary mosaiced video streams. The primary mosaiced video streams are combined by the second layer to generate a secondary mosaiced video stream. Alternatively, the first layer comprises at least one transceiving unit only implementing the scaling functionality. Source video streams are scaled by the first layer to generate scaled video streams. The scaled video streams are combined by the second layer to generate a mosaiced video stream.

A display device is disclosed. The display device includes a display panel, a transparent back cover positioned at a rear of the display panel, a side frame positioned at a side of the display panel or the transparent back cover, and a cable electrically connected to the display panel and extended along the side frame.

The present invention provides a flexible screen being able to switch between a flat shape and a curved shape and TV set thereof, comprising: a flexible screen and a power mechanism arranged on one side of the flexible screen, applied to driving the flexible screen to switch between a flat shape and a curved shape; the power mechanism comprises: a telescoping arm and a telescoping power unit arranged on the telescoping arm and applied to driving the telescoping arm elongating and contracting following the horizontal direction. The user may adjust the curved or flat state of the flexible screen through a remote control of the remoter or through a manual adjustment of the ring handle: when a view effect of the curved screen is wanted, through pressing the button for curved screen in the remoter or through rotating the ring handle, switching the flexible screen from flat to curved, and a good view effect is achieved; or through pressing the button for flat screen in the remoter or through rotating the ring handle, switching the flexible screen from curved to flat, to satisfying the view of a plurality of viewers.

The present invention provides a flexible screen being able to switch between a flat shape and a curved shape and TV set thereof, comprising: a flexible screen and a power mechanism arranged on one side of the flexible screen, applied to driving the flexible screen to switch between a flat shape and a curved shape; the power mechanism comprises: a telescoping arm and a telescoping power unit arranged on the telescoping arm and applied to driving the telescoping arm elongating and contracting following the horizontal direction. The user may adjust the curved or flat state of the flexible screen through a remote control of the remoter or through a manual adjustment of the ring handle: when a view effect of the curved screen is wanted, through pressing the button for curved screen in the remoter or through rotating the ring handle, switching the flexible screen from flat to curved, and a good view effect is achieved; or through pressing the button for flat screen in the remoter or through rotating the ring handle, switching the flexible screen from curved to flat, to satisfying the view of a plurality of viewers.

There is provided a display control device capable of ensuring the user's field of vision while keeping the user safe when the user is using a see-through head-mounted display, the display control device including: a situation acquisition unit configured to acquire information about a situation where a see-through display is being used, and a display control unit configured to perform display control on the see-through display using the information acquired by the situation acquisition unit so that a display of the information on the see-through display gradually becomes clearly visible.