Patent ID: 7148929

Claim:
A television system having a terminal for receiving a television program, and outputting a signal including at least a video signal and an audio signal, and an image display device, connected to the terminal with a connection cable for receiving the signal from the terminal, for outputting an image corresponding to the video signal and a sound corresponding to the audio signal, comprising: a detection unit, arranged in the image display device, for detecting a plurality of kinds of ambient environment around the image display device; a transmission unit for transmitting a change of one of the plurality of kinds of ambient environment detected by said detection unit to the terminal through the connection cable; a first adjustment unit, arranged in the terminal, for adjusting a predetermined output characteristic of the image or the sound to be outputted by the image display device by modulating the signal to be outputted to the image display device based on the change of the one kind of ambient environment transmitted by said transmission unit; a second adjustment unit, arranged in the image display device, for adjusting another output characteristic of the image or the sound to be outputted by the image display device by modulating the signal received from the terminal based on the change of another one of the plurality of kinds of ambient environment detected by said detection unit.