HOME BUILT-IN ETHERNET-BASED MULTI-ROOM SYSTEM, AND BASE SET-TOP BOXE DEVICES AND DISPLAY DEVICES FOR THE SAME

摘要

PURPOSE: A home built-in Ethernet-based multi-room system and a set-top box device thereof are provided to use an Ethernet as a base network for the multi-room system. CONSTITUTION: A main set-top box receives a digital broadcast signal from an external transfer medium. The main set-top box extracts a digital broadcast stream from the digital broadcast signal. At least one display device(210,220,230,240) receives the digital broadcast stream from a home built-in Ethernet. At least one display device generates a broadcast image from the digital broadcast stream in response to manipulation of a user. [Reference numerals] (110) CAS; (120) Scrambler; (210) First display device; (220) Second display device; (230) Third display device; (240) Fourth display device; (400) Ethernet hub; (AA) Broadcasting signal; (BB) Broadcasting stream; (CC) Room #2; (DD) Room #1; (EE) Room #3; (FF) Room #4