Abstract: A method of audio-visual communication using a television and a television using the same are provided, wherein the broadband network and television technologies are used to achieve services of audio-visual communication over a network, such that a user uses the television to conduct audio-visual communications.

Abstract: The present invention provides a remote controlling system using an optical fiber. The remote controlling system is for controlling N electronic equipments located in a situation. The remote controlling system according to the invention includes a receiving unit and a transmitting unit. A radiation signal receiver of the receiving unit is for receiving a first radiation signal. According to the first radiation signal, a first controlling module of the receiving unit is for driving a light-emitting device to emit a control light signal to the optical fiber. The control light signal is transmitted over the optical fiber and then received by a photo-detector of the transmitting unit. According to the received control light signal, a second controlling module of the transmitting unit is for driving M radiation signal transmitters to emit M second radiation signals, so as to control one of the N electronic equipments.

Abstract: A power control circuit includes an isolation circuit for receiving a separate image signal and outputting a start signal, and a driving circuit for outputting a direct current (DC) power to start a power module. The other power control circuit includes a first signal generating circuit, for generating a first signal; a second signal generating circuit, for receiving a DC power and outputting a second signal upon receiving a first signal; a driving circuit, for outputting a DC power to start a power module after receiving the second signal; an isolation circuit, for receiving the separate image signal and outputting a start signal; and a control circuit, for outputting a DC power to start the power module after receiving the start signal. The operation of the power control circuit can be suspended, when the display device is in a standby state, thereby reducing power consumption in the standby state significantly.

Abstract: A photoelectric element package with temperature compensation includes a substrate, and a first light-emitting element, a second light-emitting element, a photosensitive element, and a drive element disposed on the substrate, all of which are disposed in an internal space formed by a first casing joined with a second casing. Alternatively, the second light-emitting element and the photosensitive element are disposed in an internal space of a third casing. By adding the second light-emitting element, the photosensitive element can sense the light emitting intensity accurately in the absence of other interferences, so as to feed back the current operating state of the light-emitting element. A temperature compensation function is achieved by a laser driver, so as to reduce the influence of temperature on the light-emitting element, such that the light-emitting element emits light in an accurate intensity.