Abstract: A smart charging system is provided, which includes a handheld device and an insertion device. An interactive application program is built in the handheld device. The insertion device has a protective case for protecting the handheld device, a connector, a slave battery module and a slave application circuit. When the handheld device is placed into the insertion device, the connector is coupled to the handheld device to activate the interactive application program to proceed a two-way communication. The handheld device has a control power of the slave application circuit. The handheld device displays an interactive graphical user interface to guide a user to set the insertion device, so as to provide electricity for the handheld device. The system can upgrade a battery endurance of the handheld device and solve problems of unable to replace the battery and charge saturation of the battery.

Abstract: An interactive play system including a handheld device and an insertion device is provided. An interactive application program is embedded in the handheld device. The insertion device includes a dock, an amplifier, a speaker, and a slave circuit. The dock carries the handheld device. The speaker is coupled to the amplifier and used for playing a sound. The slave circuit is coupled to the amplifier. When the handheld device is placed in the dock of the insertion device and accordingly activates the interactive application program, the handheld device displays an interactive graphical user interface, and the slave circuit and the amplifier are coupled to the handheld device, so as to guide a user to set the insertion device. The handheld device controls various functions of the slave circuit.

Abstract: An interactive system is provided. The interactive system includes a handheld device and an insertion device. An interactive application program is embedded into the handheld device. The insertion device has a protective case for protecting the handheld device, and the insertion device also has a slave circuit, where the insertion device does not have a screen or a keypad. When the interactive application program is activated by a user through putting the handheld device into the insertion device, the handheld device will display an interactive graphical user interface so as to guide the user to set the insertion device, and the handheld device controls the functions of the slave circuit.

Abstract: A terrestrial/satellite set-top-box (STB) system is provided. The system includes a handheld device and an STB. The handheld device has a built-in interactive application program. The STB includes a docking station and a playing circuit. The docking station carries the handheld device. The handheld device can be used for setting or remotely controlling the STB. The STB is linked to a wireless network via the handheld device so as to play movies and news programs from the network. The invention can solve the disadvantage of failing wirelessly to link network in the prior art.