Patent ID: 8073379

Claim:
A Radio-Frequency (RF) Karaoke data receiving pack comprising: an RF receiver for receiving a voice signal and key data signal radio-transmitted from a wireless microphone device via a receiving antenna; a demodulator for demodulating the received voice signal and the received data signal from the RF receiver; an audio/key data separator for separating the voice signal and key data signal from the signal demodulated by the demodulator; a waveform shaping unit for shaping the waveform of the key data signal; an Analog-to-Digital (A/D) converter for converting the voice signal into a digital signal; a receiver Micro-Controller Unit (MCU) connected to an external computing device having a computing function and a sound processing function, the receiver MCU controlling an internal operation of the RF Karaoke data signal receiving pack while transmitting the digital voice signal and key data signal to the external computing device; a serial communication interface transmitting the digital voice signal and key data signal to the external computing device under a control of the receiver MCU; and an extension pack in which additional songs are recorded, the extension pack being connected to an extension pack slot to transmit data of the additional songs under the control of the receiver MCU.