US Patent 12120330 Image transmission device and image reception device

An image transmission device including a content compression unit configured to compress an image signal, a wireless transmission unit configured to wirelessly transmit the compressed image signal to an image reception device, and a processor configured to switch a power mode of the image transmission device to a low power mode based on a determination that an image signal is not being received from an external source or that an ambient brightness at the image reception device is less than a preset brightness, and control the content compression unit to increase a compression rate of the image signal in the low power mode.