"HD Ready" refers to a display device, such as a television or monitor, that can support high-definition video content. Specifically, it typically means the device has a resolution of at least 720p (1280x720 pixels) and can accept HD signals, allowing viewers to enjoy clearer and more detailed images compared to standard definition.
To be classified as "HD Ready," a device must also have the necessary inputs, like HDMI ports, to connect to HD sources, such as Blu-ray players or gaming consoles. However, it does not guarantee that the device can display full 1080p (1920x1080 pixels) resolution, which is often referred to as "Full HD."