Method for controlling voltage based on temperature and terminal supporting the same

1. A terminal supporting a voltage control based on a temperature, the terminal comprising:

a temperature sensor for detecting a temperature of at least one location of the inside and of the outside of at least one system;

a voltage control unit for adjusting the voltage supplied to the at least one system according to the temperature detected by the temperature sensor using a Dynamic Voltage Frequency Scaling (DVFS) table; and

an internal clock detector for detecting a drive frequency of the system,

wherein the DVFS table is selected from a plurality of DVFS tables based on the temperature, and each of the plurality of DVFS tables corresponds to a different temperature, and

wherein the voltage control unit controls the voltage supplied to the system according to voltage information mapped with the drive frequency of a specific DVFS table selected from among the plurality of DVFS tables, based on the drive frequency and the temperature.

2. The terminal of claim 1 , wherein the at least one system comprises at least one of an Application Processor (AP), an image data processing unit, a graphics supporting unit, and an internal logic for the terminal.

3. The terminal of claim 1 , further comprising a storage unit storing the plurality of DVFS tables.

4. The terminal of claim 1 , wherein the at least one system is one selected from among a plurality of Adaptive Supply Voltage (ASV) groups classified by mass produced chips, and belongs to a plurality of ASV groups according to a temperature voltage margin.

5. The terminal of claim 1 , wherein the voltage control unit controls the voltage based on an individual temperature of each of the at least one system.

6. The terminal of claim 1 , wherein the voltage control unit decreases the voltage to a predetermined voltage which is an amount corresponding to the increase of the temperature.

7. The terminal of claim 1 , wherein the temperature sensor is at least one of a temperature sensor installed inside the system and a temperature sensor installed on a Printed Circuit Board (PCB) on which the system is disposed.

8. A method for controlling a voltage based on a temperature, the method comprising:

detecting temperature information of at least one location of the inside and of the outside of at least one system; and

adjusting a voltage supplied to the at least one system according to the detected temperature using a Dynamic Voltage Frequency Scaling (DVFS) table,

wherein the DVFS table is selected from a plurality of DVFS tables based on the temperature, and each of the plurality of DVFS tables corresponds to a different temperature, and

wherein the adjusting of the voltage comprises:

detecting voltage information mapped with a drive frequency of a specific DVFS table selected from among the plurality of DVFS tables, based on the drive frequency detected by the internal clock detector and temperature information collected by the temperature sensor; and

adjusting the voltage supplied to the system according to the detected voltage information.

9. The method of claim 8 , wherein the at least one system comprises at least one of an Application Processor (AP), an image data processing unit, a graphics supporting unit, and an internal logic for the terminal.

10. The method of claim 8 , wherein the at least one system is one selected from among a plurality of Adaptive Supply Voltage (ASV) groups classified by mass produced chips, and belongs to a plurality of ASV groups according to a temperature voltage margin.

11. The method of claim 8 , wherein the adjusting of the voltage further comprises controlling the voltage based on an individual temperature of each of at least one system.

12. The method of claim 8 , wherein the adjusting of the voltage further comprises decreasing the voltage to a predetermined voltage which is an amount corresponding to the increase of the temperature.

13. The method of claim 8 , wherein the detecting of the temperature is performed by at least one of a temperature sensor installed inside the at least one system and a temperature sensor installed on a Printed Circuit Board (PCB) on which the at least one system is disposed.

14. At least one non-transitory processor readable medium for storing a computer program of instructions configured to be readable by at least one processor for instructing the at least one processor to execute a computer process for performing the method as recited in claim 8 .

15. The terminal of claim 1 , wherein a value of voltage included in each of the plurality of DVFS tables is decreased as a temperature corresponding to the each of the plurality of DVFS tables is increased.

16. The method of claim 8 , wherein a value of voltage included in each of the plurality of DVFS tables is decreased as a temperature corresponding to the each of the plurality of DVFS tables is increased.