A communication system includes a first device, second devices, and a communication line providing a serial connection from the first device to the second devices to establish a communication connection. An address setting device of the communication system is configured to set addresses of the second devices. The address setting device includes a communication controller. The communication controller is configured to transmit a transmission signal toward the second devices through the communication line and change at least one of an amplitude or a frequency of the transmission signal, and associate the addresses of the second devices with connection precedence of the second devices to the first device based on a reception signal received through the communication line.

Upon receiving a signal from a remote control device, a device identifies a command data usable to communicate with a consumer device. The signal contains an indication of a pressed key, which corresponds to a function of the consumer device. The device generates a command signal having the command data for transmission to the consumer device to control the selected function of the consumer device using a format recognizable by the consumer device.

Upon receiving a signal from a remote control device, a device identifies a command data usable to communicate with a consumer device. The signal contains an indication of a pressed key, which corresponds to a function of the consumer device. The device generates a command signal having the command data for transmission to the consumer device to control the selected function of the consumer device using a format recognizable by the consumer device.

Upon receiving a signal from a remote control device, a device identifies a command data usable to communicate with a consumer device. The signal contains an indication of a pressed key, which corresponds to a function of the consumer device. The device generates a command signal having the command data for transmission to the consumer device to control the selected function of the consumer device using a format recognizable by the consumer device.

Upon receiving a signal from a remote control device, a device identifies a command data usable to communicate with a consumer device. The signal contains an indication of a pressed key, which corresponds to a function of the consumer device. The device generates a command signal having the command data for transmission to the consumer device to control the selected function of the consumer device using a format recognizable by the consumer device.

Upon receiving a keystroke indicator signal from a remote control device, a key code generator device identifies a codeset usable to communicate with a selected consumer device. The keystroke indicator signal contains an indication of a pressed key, which corresponds to a function of the selected consumer device. Using the identified codeset and the key indication, the key code generator device generates a key code and modulates that key code onto a radio frequency carrier signal, thereby generating a first key code signal. The remote control device receives the first key code signal from the key code generator device and modulates the key code onto an infrared frequency carrier signal, thereby generating a second key code signal. The remote control device relays the key code to the selected consumer device in the second key code signal. The key code causes the selected consumer device to perform the desired function.

Upon receiving a keystroke indicator signal from a remote control device, a key code generator device identifies a codeset usable to communicate with a selected consumer device. The keystroke indicator signal contains an indication of a pressed key, which corresponds to a function of the selected consumer device. Using the identified codeset and the key indication, the key code generator device generates a key code and modulates that key code onto a radio frequency carrier signal, thereby generating a first key code signal. The remote control device receives the first key code signal from the key code generator device and modulates the key code onto an infrared frequency carrier signal, thereby generating a second key code signal. The remote control device relays the key code to the selected consumer device in the second key code signal. The key code causes the selected consumer device to perform the desired function.