A video transmission method includes that a terminal sends first field of view information to a server through a first link based on a first period. The server receives the first field of view information from the terminal through the first link based on the first period. After determining, based on a second period, that the first field of view information is latest field of view information, the server obtains data of a first frame of image corresponding to the first field of view information, and sends the data of the first frame of image to the terminal through a second link. The terminal receives the data of the first frame of image from the server through the second link based on the second period.

A wireless endoscope system includes: a data storage unit that stores imaging data as storage data at a time at which a still image display signal is switched from a first state indicating an execution of a moving image display to a second state indicating an execution of a still image display; an image quality control unit that controls image quality of a plurality of pieces of still image data such that an image quality of a piece of still image data generated later a becomes higher; a data-selecting unit that selects the moving image data or the plurality of pieces of still image data on the basis of the still image display signal; and a transmission unit that transmits the moving image data or the plurality of pieces of still image data selected by the data-selecting unit in a wireless manner.

The present disclosure is intended to provide a smart television and a method for displaying a graphical user interface of a television screen shot. The method includes while a display device is displaying currently-played content, in response to receiving an input instruction for capturing a screen shot, acquiring a screen shot image comprising at least one object; and while the display device continues playing, displaying a screen shot content display layer on the display device. The screen shot content display layer is configured to present the screen shot image. The method further includes in response to receiving an input for selecting an object or a keyword matched with the object, displaying recommended content related to the object; in response to receiving a selection for a different object on the screen shot image by moving a focus frame, updating presentation of recommended content based on the selected different object.

A test device according to an embodiment includes a first substrate including a data conversion module having a first connector for receiving data acquired from an external equipment, an FPGA (Field Programmable Gate Array) for converting the received data, and a second connector for outputting the converted data; a second substrate including a test module including a third connector connected to the second connector of the first substrate and receiving the converted data, a test unit for performing a test operation using the data received through the third connector, a communication unit for transmitting test result information according to a test operation result of the test unit to an outside, and a control unit for controlling the test unit and the communication unit; and a housing for accommodating the first substrate and the second substrate.

A test device according to an embodiment includes a first substrate including a data conversion module having a first connector for receiving data acquired from an external equipment, an FPGA (Field Programmable Gate Array) for converting the received data, and a second connector for outputting the converted data; a second substrate including a test module including a third connector connected to the second connector of the first substrate and receiving the converted data, a test unit for performing a test operation using the data received through the third connector, a communication unit for transmitting test result information according to a test operation result of the test unit to an outside, and a control unit for controlling the test unit and the communication unit; and a housing for accommodating the first substrate and the second substrate.