Samsung Smart TV provides user experience that differs completely from that of other familiar devices, such as mobile devices and desktop computers. Users will experience something new while using their TVs.
You can download all UX guidelines here.
Principles for Designing Applications for Samsung Smart TV
Considerations when Configuring the Apps Screen
Design Principles for Creating Samsung Apps Content
Composition of Smart Hub Apps
Definition of Actions by Input Methods
Definition of Application Screen Layout
Smart Hub Layout
TV Input Devices