DISPLAY APPARATUS, UPGRADE APPARATUS, DISPLAY SYSTEM INCLUDING THE SAME AND THE CONTROL METHOD THEREOF

摘要

PURPOSE: A display device, an upgrade device, a display system including the same, and a control method thereof are provided to set the upgrade device as a communication available state based on device information about the upgrade device, stored in the first storage unit of the display device, according to the connection of the display device and the upgrade device. CONSTITUTION: An upgrade device connection unit (160) connects an upgrade device (200). A display unit (170) displays at least one of a first image, corresponding to the first output signal of a first image processing unit (130), and a second image corresponding to the second output signal of a second image processing unit (220). If the upgrade device is connected to the upgrade device connection unit, a first control unit (140) sets the upgrade device as a communication available state based on the first device information about the upgrade device stored in a first storage unit (150). [Reference numerals] (110) First image signal input unit; (120) User input unit; (130) First image processing unit; (140) First control unit; (150) First storage unit; (160) Upgrade device connection unit; (170) Display unit; (182) Conversion amplifying unit; (185) Sound output unit; (191) First connection unit; (193) Second connection unit; (210) Main body connection unit; (220) Second image processing unit; (230) Second control unit; (240) Second storage unit; (250) Second image signal input unit; (P1) First external device; (P2) Second external device