Abstract: Provided is a digital transmitting module included in a host device connectable to a client device. A digital transmitting module included in a host device connectable to a client device, the digital transmitting module may include: a clock generator which provides the host device with a clock whose one cycle is comprised of T1, T2, T3 and T4 connected sequentially, and a voltage encoder which receives the clock from the clock generator, receives a digital bit from the host device, generates a voltage pulse by encoding the digital bit based on the clock, and then transmits the voltage pulse to the client device.

Abstract: Provided is a digital transmitting module included in a host device connectable to a client device. A digital transmitting module included in a host device connectable to a client device, the digital transmitting module may include: a clock generator which provides the host device with a clock whose one cycle is comprised of T1, T2, T3 and T4 connected sequentially, and a voltage encoder which receives the clock from the clock generator, receives a digital bit from the host device, generates a voltage pulse by encoding the digital bit based on the clock, and then transmits the voltage pulse to the client device.

Abstract: Provided is a digital transmitting module included in a host device connectable to a client device. The digital transmitting module may include: a clock generator which provides the host device with a clock whose one cycle is composed of T1, T2, T3 and T4 connected sequentially; and a voltage encoder which receives the clock from the clock generator, receives a digital bit from the host device, generates a voltage pulse by encoding the digital bit based on the clock, and then transmits the voltage pulse to the client device. Provided is a digital receiving module included in a client device connectable to a host device.

Abstract: Disclosed is a host communication module, which is provided in a host device that can be connected to a slave device, including: a host power communication unit, in a transmission mode, receiving a power voltage for driving an active slave device from the host device and allowing the host device and the active slave device to perform power communication using the power voltage, and in a reception mode, receiving a power pulse from the active slave device and allowing the host device and the active slave device to perform power communication using the power pulse and a terminal connection unit transmitting or receiving the power pulse to or from the active slave device via a microphone jack provided in the host device.