Abstract: Provided is a communication device using a powerline which can transmit and receive control data and so on by using the powerline, and an LED (Light Emitting Diode) lighting system using the device which can control the illumination of an LED by using the communication device. The LED illumination device comprising: one or more control devices coupled with commercial power source through powerlines; one or more LED illumination devices coupled with control devices, respectively, through the powerlines; and a management device for performing communication with the control devices; wherein the control devices and the LED illumination device perform data transmission and reception by using the powerlines, the data communication from the control devices to the LED illumination device is executed by broadcasting method, and the data communication from the LED illumination device to the control devices is executed by polling method.

Abstract: A leakage current interruption device comprises: the leakage current interruption device in which it is coupled electrically between the power switch and the load: the first and second input stages coupled with a side of the power source; the first and second output stages coupled with a side of the load; the first and second switching members for turning on and off respectively the electrical connection between the first and second input stages and the first and second output stages; a switching driving member in which it is coupled between the first and second input stages and generates and outputs a switching driving signal to turn on or off the first and second switching members according to the on or off signals of the power switch.

Abstract: A fluorescent lamp-compatible LED lighting device which is used to a fluorescent lamp apparatus and includes a ballast stabilizer which applies a first discharge voltage when first and second coupling terminals of the fluorescent lamp are all connected to the fluorescent lamp apparatus and also applies second discharge voltage when first coupling terminal or second coupling terminal is connected to the fluorescent lamp apparatus, the fluorescent lamp-compatible LED light device comprising; first and second coupling members electrically connected to sockets of both sides of the fluorescent lamp apparatus, an electric shock protecting device selectively connected to the first coupling member or the second coupling member, a rectifying member for rectifying the outside alternating power source inputted through the first and second coupling members, an LED module having plural LEDs, and a driving member for driving the LED module based on the driving power source supplied from the rectifying member.

Abstract: A fluorescent lamp-compatible LED lighting device which is used to a fluorescent lamp apparatus and includes a ballast stabilizer which applies a first discharge voltage when first and second coupling terminals of the fluorescent lamp are all connected to the fluorescent lamp apparatus and also applies second discharge voltage when first coupling terminal or second coupling terminal is connected to the fluorescent lamp apparatus, the fluorescent lamp-compatible LED light device comprising; first and second coupling members electrically connected to sockets of both sides of the fluorescent lamp apparatus, an electric shock protecting device selectively connected to the first coupling member or the second coupling member, a rectifying member for rectifying the outside alternating power source inputted through the first and second coupling members, an LED module having plural LEDs, and a driving member for driving the LED module based on the driving power source supplied from the rectifying member.

Abstract: Provided is a communication device using a powerline which can transmit and receive control data and so on by using the powerline, and an LED (Light Emitting Diode) lighting system using the device which can control the illumination of an LED by using the communication device. The LED illumination device comprising: one or more control devices coupled with commercial power source through powerlines; one or more LED illumination devices coupled with control devices, respectively, through the powerlines; and a management device for performing communication with the control devices; wherein the control devices and the LED illumination device perform data transmission and reception by using the powerlines, the data communication from the control devices to the LED illumination device is executed by broadcasting method, and the data communication from the LED illumination device to the control devices is executed by polling method.

Abstract: A reproduction apparatus and a monitor apparatus are interconnected by one cable connector, which transmits an image and/or audio signal, a first control signal, and a power signal between the reproduction apparatus and the monitor apparatus. A controller in the monitor apparatus generates the first control signal to control the reproduction apparatus and generates a second control signal to control an output unit in the monitor apparatus. The output unit outputs the image and/or the audio signal from the reproduction apparatus as a visual and/or auditory signal in response to the second control signal. A power unit receives the power signal from the reproduction apparatus and supplies power to each component of the monitor apparatus. Thus, the reproduction apparatus and the monitor apparatus can be driven through the monitor apparatus using one remote controller. Similarly, the reproduction apparatus and the monitor apparatus can be driven through the reproduction apparatus using the remote controller.

Abstract: A viewing broadcast program reserve-recording method and apparatus carries out reserve-recording of a broadcast program while maintaining a currently viewed broadcast picture without interruption. The reserve-recording apparatus pre-stores program identification information, for example, VPS data or KBPS data, contained in a broadcast program of each broadcast station, reads channel data, broadcast date and time contained in program identification information corresponding to the currently viewed broadcast program from the pre-stored program identification information when a key input signal for reserve-recording the currently viewed broadcast program is applied, and stores the read data as reserve-recording information. Accordingly, a subsequent broadcasting portion of a broadcast program can be easily reserved for recording by simply manipulating a key while a user views the broadcast program.

Abstract: A reproduction apparatus and a monitor apparatus are interconnected by one cable connector, which transmits an image and/or audio signal, a first control signal, and a power signal between the reproduction apparatus and the monitor apparatus. A controller in the monitor apparatus generates the first control signal to control the reproduction apparatus and generates a second control signal to control an output unit in the monitor apparatus. The output unit outputs the image and/or the audio signal from the reproduction apparatus as a visual and/or auditory signal in response to the second control signal. A power unit receives the power signal from the reproduction apparatus and supplies power to each component of the monitor apparatus. Thus, the reproduction apparatus and the monitor apparatus can be driven through the monitor apparatus using one remote controller. Similarly, the reproduction apparatus and the monitor apparatus can be driven through the reproduction apparatus using the remote controller.