Method for adjusting the volume of communication voice and key tone in a cellular phone

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Preferred embodiments of the present invention will be described hereinbelow with reference to the accompanying drawings.
In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.
Referring to FIG.
1, when receiving an RF signal, an RF (Radio Frequency) module 102 demodulates an RF signal received from a base station through an antenna 100, and transfers the RF signal to a base band processor 104.
The base band processor 104 down converts the output signal of the RF module 102 into a digital signal and applies the digital signal to a control unit 106.
When transmitting the RF signal, RF module 102 modulates a signal from the base band processor 104, and transmits the RF signal through antenna 100 to a base station.
The base band processor 104 up converts the signal from the control unit 106 into an analog signal and transfers an analog signal to the RF module 102.
The control unit 106 is a central processing unit such as a mobile system microprocessor (MSM) found in mobile telephones, and controls the entire operation of the cellular phone.
A memory device 110 includes a flash memory 150 for storing the control program of the control unit 106, an Electrically Erasable and Programmable Read-Only Memory (EEPROM) 160 for storing various setting data such as power level, etc.
The memory device 110 further includes a static RAM 155 for storing various flag data and call treatment information and a Read-Only Memory (ROM) 157.
ROM 157 typically has a memory size of either 16 or 32 megabytes, while RAM 155 typically has a memory size of less than or equal to 4 megabytes.
The memory device 110 also allocates the memory regions for storing the voice commands to adjust the volume level of the cellular.
A keypad 112 includes a plurality of keys for entering various commands and information.
A display unit 108 usually consists of an LCD module to display the information under the control of control unit 106