Patent ID: 8896756

Claim:
A display apparatus configured to display an image corresponding to an image signal, the display apparatus comprising: a channel switch configured to select one of a plurality of channels by switching the channel for the image signal to be input; a detector configured to detect whether or not there is the image signal based on a synchronizing signal in the plurality of channels; an image processor commonly provided to the plurality of channels, and configured to provide processing to the image signal of a selected channel selected by the channel switch in accordance with a parameter; a parameter acquirer commonly provided to the plurality of channels, and configured to obtain the parameter in accordance with a format of the image signal of the selected channel; a memory controller configured to store the parameter obtained by the parameter acquirer in a storage area in a memory corresponding to the selected channel, and to hold the parameter for a first channel in the memory while the detector detects the image signal in the first channel even after the channel switch switches from the first channel to a second channel, the memory controller being further configured to delete the parameter for the first channel in the memory when the detector detects no image signal in the first channel; and an image processing controller configured to read the parameter and set the parameter to the image processor without acquiring a new parameter from the parameter acquirer when the parameter for the selected channel is stored in the memory.