Mobile communication terminal and method of using the same

• US 20050113125A1
• Filed: 09/24/2004
• Published: 05/26/2005
• Est. Priority Date: 09/25/2003
• Status: Abandoned Application

• Current Assignee: SK Teletech Company Limited (SOLiD, Inc.)
• Original Assignee: SK Teletech Company Limited (SOLiD, Inc.)
• Inventors: Kang, Wan-Gyu
• Application Number:
  US10/949,424
• Publication Number:
  US 20050113125A1
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use

Abstract

A mobile communication terminal having an antenna and method of using the same is disclosed in which the angle of the antenna is adjusted according to a Specific Absorption Rate (SAR) value of the mobile communication terminal and a user is notified when the SAR value exceeds a predetermined value. The method stores a plurality of SAR values each corresponding to a transmission power of the mobile communication terminal in a memory and determines a current transmission power of the mobile communication terminal in a call state. The method then reads a SAR value which corresponds to the current transmission power from the memory. The angle of the antenna is then adjusted according to the SAR value.

Claims

1. A method of adjusting angle of an antenna according to Specific Absorption Rate (SAR) values in a mobile communication terminal, comprising steps of:

storing a plurality of SAR values each corresponding to a transmission power of the mobile communication terminal in a memory;

determining a current transmission power of the mobile communication terminal in a call state;

reading a SAR value which corresponds to the current transmission power from the memory;

adjusting the angle of the antenna according to the SAR value read in the readng step.

2. The method as set forth in claim 1, further comprising the step of returning the antenna to its original position if the call state terminates.

3. The method as set forth in claim 1, wherein the step of adjusting further comprises the steps of:

reading a predetermined angular value of the antenna corresponding to the SAR value from the memory; and

adjusting the angle of the antenna according to the predetermined angular value of the antenna.

4. The method as set forth in claim 1, wherein the step of adjusting further comprises the steps of:

reducing the angle of the antenna if the SAR value is higher than a predetermined reference value; and

returning the antenna to its original position if the SAR value is equal to or lower than the predetermined reference value.

5. The method as set forth in claim 4, further comprising the step of issuing an alarm sound if the SAR value exceeds the predetermined reference value.

6. A method of notifying a user of SAR values in a mobile communication terminal, comprising steps of:

storing a plurality of SAR values each corresponding to a transmission power of the mobile communication terminal in a memory;

reading a SAR value corresponding to a current transmission power of the mobile communication terminal from the memory if the mobile communication terminal is in a call processing state;

issuing an alarm sound if the SAR value from the reading step exceeds a predetermined reference value.

7. The method as set forth in claim 6, wherein the step of issuing further comprises the step of displaying the SAR value if the SAR value exceeds the predetermined reference value.

8. A mobile communication terminal having an antenna comprising:

a memory configured to store a plurality of SAR values each corresponding to a transmission power of the mobile communication terminal;

a monitor circuit configured to determine a current transmission power of the mobile communication terminal in a call state;

a reading circuit configured to read from the memory a SAR value which corresponds to the current transmission power of the mobile communication terminal; and

a control circuit configured to adjust the angle of the antenna according to the SAR value read by the reading circuit.

9. The mobile communication termina of claim 8, wherein the control circuit is further configured to reduce the angle of the antenna if the SAR value is higher than a predetermined reference value.

10. The mobile communication terminal of claim 8, wherein the control circuit is further configured to return the antenna to its origina position if the SAR value is equal to or lower than a predetermined reference value.