Display system with plural displays, display apparatus and display method thereof

摘要

A display system (110) includes a host apparatus (120) that generates a main image signal and a sub image signal; a compressor (225) that compresses the sub image signal generated by the host apparatus; a primary display (131) that displays an image based on the main image signal generated by the host apparatus; and a secondary display (32) that receives the sub image signal compressed by the compressor according to a general-purpose data communication standard, expands the received sub image signal, and displays an image based on the expanded sub image signal. The compressor is located either in the host apparatus or in the primary display. The secondary display receives the sub image signal either from the primary display or directly from the host apparatus. With this configuration, expenses incurred for display of an image on an additional display apparatus can be minimized.