Display control apparatus, image display system, display control method, and computer-readable recording medium which displays a captured image with an overlaid input image when a video signal is not input

摘要

A display control apparatus receives an input of a video signal from an input device and makes a control that causes a video to be displayed on a display apparatus. The display control apparatus includes a capturing unit (410) configured to capture image data that represents a frame image of the input video signal; a signal detector (420) configured to detect whether the video signal is input and issue an instruction to cause the display apparatus to display the video or the frame image on the basis of a result of the detection; and a control unit (400, 430, 440, 450, 460) configured to generate the frame image from the image data captured most recently to cause the display apparatus to display the generated frame image when it is detected that the video signal is not input and the control unit receives the instruction to cause the display apparatus to display the frame image.

主权项

1. A display control apparatus connectable to a plurality of input devices, receiving an input of a video signal from one of the plurality of input devices, and causing a video to be displayed on a display apparatus, the display control apparatus comprising:
a capturing unit configured to capture image data that represents a frame image of the input video signal; a signal detector configured to detect whether the video signal is input, and issue an instruction to cause the display apparatus to display the video or the frame image on the basis of a result of the detection; a controller configured to generate the frame image from the image data captured by the capturing unit most recently to cause the display apparatus to display the generated frame image when it is detected that the video signal is not input and the controller receives the instruction to cause the display apparatus to display the frame image; and a unit configured to acquire information input from a display screen of the display apparatus, and generate input image data from the acquired information, wherein the controller creates a composite image by overlaying an input image generated from the input image data on the frame image, and causes the display apparatus to display the composite image.