Patent ID: 7630726

Claim:
A communication method comprising: selecting one of a cordless phone and a handset transceiver function mode through a user interface; minimum-shift-keying (MSK)-modulating a data signal corresponding to the selected function mode, and frequency-modulating (FM) the MSK-modulated data signal; converting the FM-modulated data signal to a radio frequency (RF) band signal corresponding to the selected function mode, and transmitting the converted RF band signal to a cordless phone base station; if a voice signal exists when the data signal is not transmitted, FM-modulating the voice signal, converting the FM-modulated voice signal to the RF band signal corresponding to the selected function mode, and transmitting the converted RF band signal to the cordless phone base station; detecting and filtering a channel of a signal selected by the cordless phone base station if the RF signal is received from the cordless phone base station; FM-demodulating the filtered signal; outputting the voice signal through a speaker when the FM-demodulated signal is a voice signal; and decimating the FM demodulated data signal, MSK-demodulating the decimated data signal, and executing a command corresponding to the MSK demodulated data signal if the FM-demodulated signal is a data signal, wherein the operation of MSK demodulating the data signal comprises: determining whether a frame that forms the MSK-demodulated data signal is an effective frame; storing the frame in a queue, if the frame is an effective frame; and dequeuing the stored frame, wherein the MSK modulation and the FM modulation are performed by software modules.