33results about "Remote-control tuning using electromagnetic waves" patented technology

In a method and arrangement for installing or updating a large number of television receivers in, e.g., hotels, one of the television receivers (1) is manually programmed. The data is then downloaded from the television receiver into a remote control unit (3) by modulating a conventional status LED (17) of the television receiver. In accordance with the invention, the status LED is of a type which emits visible light (171) as well as infrared light (172). The modulated infrared light beam (172) is detected by an infrared detector (34) of the remote control device and stored (35) therein. The data stored in the remote control unit is subsequently uploaded to other television receivers using the conventional infrared channel (33,15).

A remote controller and its operating method, the remote controller includes a first key for selecting a predetermined function mode and a second key for selecting a sub-mode of the function mode, wherein the response operation mode and the selected function mode If not, change the operation mode of the second key to correspond to the selected function mode.

A remote controller includes: a switch for selecting one of a plurality of options in one dimension out of control items laid out in a plurality of dimensions, an item selector for selecting one of a plurality of options in another dimension out of the control items laid out in the plurality of dimensions. The remote controller transmits a remote control code in accordance with an output of the switch and an output of the item selector. The device to be controlled by the remote controller is provided with a display for showing the control items in accordance with a signal from the remote controller. Every time the first remote control code is transmitted, the display displays control items selectable by the item selecting means for a certain period of time.

A method for setting programmable-controlled remote controller includes adding a user boundary surface and interruption subprogram in front of program corresponding function table to each key in control program of remote controller, opening key value functional corresponding table for carrying out interchangeable confirmation of key value to functional table through selecting the corresponding relation of key value to functional table of remote controller with assistance of special function key or multiplex key.

Provided is a network system for controlling devices which operate in response to an infrared signal. The network system includes modules and a home server. The modules output the infrared signal for controlling the devices in response to command data or analyze path information of the command data, forward the command data to next one of the modules, and receive infrared control signals generated by the devices. The home server includes ID numbers of the modules and the path information of the command data for allowing the command data to reach each of the modules and outputs the command data or receives the infrared control signals. Therefore, the network conveniently control the devices using the infrared control signal even when the modules are too distant from the home server for the infrared signal to reach the devices at a time or obstacles are placed in front of the modules. Also, the network system performs authentication processes among the modules using time information to prevent the modules from malfunctioning by another infrared signal or command data.

A switch module, an electronic device using the same and a method for manufacturing the same are provided. The switch module includes a circuit board, an infrared (IR) light receiver, at least one light emitting unit and a cover. The IR light receiver is disposed on the circuit board for receiving an infrared light. The light emitting unit is disposed on the circuit board for emitting a visible light. The cover includes a first casing and a second casing, and covers the IR light receiver. The first casing shields the IR light receiver. The second casing is connected to the second casing. The transparency of the second casing is larger than that of the first casing. The second casing receives the visible light and then the visible light is emitted to the outside of the second casing.

A remote commander in which a switching element connected in series to an infrared light-emitting diode is turned on and off in response to carrier pulses to energize the infrared light-emitting diode to generate an infrared remote control signal includes varying means for varying duty ratios of carrier pulses.