Electronic device and method for controlling timing signal

1. An electronic device, comprising:

at least one processor;

a display;

a memory configured to store an image frame received from the at least one processor; and

a display controller configured to output the image frame stored in the memory through the display,

wherein the at least one processor is configured to:

transmit, to the memory, a first image frame to be output through the display, based on a first timing signal received from the display controller, wherein the display controller is configured to transmit, to the display, an image frame data stored in the memory to the display based on a rising time of a synchronization signal, wherein the first timing signal is synchronous with the synchronization signal;

identify a state of the electronic device;

transmit, to the display controller, first control information for changing a rising timing of the first timing signal, based on the identified state of the electronic device;

in response to transmitting the first control information for changing the rising timing of the first timing signal, receive a second timing signal from the display controller; and

transmit, to the memory, a second image frame to be output through the display, based on the received second timing signal,

wherein the second timing signal is asynchronous with the synchronization signal.

2. The electronic device of claim 1 , wherein the at least one processor is configured to:

transmit the first image frame to the memory during a first transmission time in response to a rising of the first timing signal; and

transmit the second image frame to the memory during a second transmission time in response to a rising of the second timing signal,

wherein the second transmission time differs from the first transmission time.

3. The electronic device of claim 2 , wherein the at least one processor is configured to:

transmit the first image frame to the memory at a first operation speed during the first transmission time; and

transmit the second image frame to the memory at a second operation speed during the second transmission time,

wherein the second operation speed differs from the first operation speed.

4. The electronic device of claim 1 , wherein the first control information includes information regarding a changing time of the rising timing of the first timing signal.

5. The electronic device of claim 1 , wherein the display controller is configured to transmit the first image frame and/or the second image frame stored in the memory to the display, based on the synchronization signal.

6. The electronic device of claim 5 , wherein the display controller is configured to read, from the memory, and transmit, to the display, the first image frame and/or the second image frame received and stored from the at least one processor, based on the rising time of the synchronization signal.

7. The electronic device of claim 5 , wherein the at least one processor is configured to transmit second control information for changing an interval of the synchronization signal to the display controller.

8. The electronic device of claim 5 , wherein the display controller is configured to change the rising timing of the first timing signal with respect to the synchronization signal, based on the first control information, and to transmit the second timing signal having the changed rising timing to the at least one processor.

9. The electronic device of claim 8 , wherein the display controller is configured to change the rising timing of the first timing signal within a period range of the synchronization signal.

10. The electronic device of claim 1 , wherein the state of the electronic device includes a type of an executed application, content of a displayed execution screen, a type of a received user input, and/or a temperature of the electronic device.

11. A method for controlling an electronic device, the method comprising:

transmitting, to a memory of the electronic device, a first image frame to be output through a display of the electronic device, based on a first timing signal received from a display controller of the electronic device, wherein the display controller is configured to transmit, to the display, an image frame data stored in the memory to the display based on a rising time of a synchronization signal, wherein the first timing signal is synchronous with the synchronization signal;

identifying a state of the electronic device;

transmitting, to a display controller of the electronic device, first control information for changing a rising timing of the first timing signal, based on the identified state of the electronic device;

in response to transmitting the first control information for changing the rising timing of the first timing signal, receiving a second timing signal from the display controller; and

transmitting, to the memory, a second image frame to be output through the display, based on the received second timing signal,

wherein the second timing signal is asynchronous with the synchronization signal.

12. The method of claim 11 ,

wherein transmitting the first image frame based on the first timing signal further comprises:

transmitting the first image frame to the memory during a first transmission time in response to a rising of the first timing signal,

wherein transmitting the second image frame based on the second timing signal further comprises:

transmitting the second image frame to the memory during a second transmission time in response to a rising of the second timing signal, and

wherein the second transmission time differs from the first transmission time.

13. The method of claim 12 ,

wherein transmitting the first image frame during the first transmission time further comprises:

transmitting the first image frame to the memory at a first operation speed during the first transmission time,

wherein transmitting the second image frame during the second transmission time further comprises:

transmitting the second image frame to the memory at a second operation speed during the second transmission time, and

wherein the second operation speed differs from the first operation speed.

14. The method of claim 12 ,

wherein transmitting the first control information for changing the rising timing of the first timing signal based on the identified state of the electronic device further comprises:

transmitting the first control information for changing the rising timing of the first timing signal to the display controller, based on the identified state of the electronic device.

15. The method of claim 14 , wherein the first control information includes information regarding a changing time of the rising timing of the first timing signal.

16. The method of claim 11 , further comprising:

transmitting, by the display controller, the first image frame and/or the second image frame stored in the memory to the display, based on the synchronization signal.

17. The method of claim 16 , further comprising:

transmitting second control information for changing an interval of the synchronization signal to the display controller.

18. The method of claim 16 , further comprising:

changing, by the display controller, the rising timing of the first timing signal with respect to the synchronization signal, based on the first control information; and

transmitting, by the display controller, the second timing signal having the changed rising timing.

19. A non-transitory computer-readable non-volatile recording medium, storing instructions configured to, when executed, cause at least one processor of an electronic device to:

transmit, to a memory of the electronic device, a first image frame to be output through a display of the electronic device, based on a first timing signal received from a display controller of the electronic device, wherein the display controller is configured to transmit, to the display, an image frame data stored in the memory to the display based on a rising time of a synchronization signal, wherein the first timing signal is synchronous with the synchronization signal;

identify a state of the electronic device;

transmit, to a display controller of the electronic device, first control information for changing a rising timing of the first timing signal, based on the identified state of the electronic device;

in response to transmitting the first control information for changing the rising timing of the first timing signal, receive a second timing signal from the display controller; and

transmit, to the memory, a second image frame to be output through the display, based on the received second timing signal,

wherein the second timing signal is asynchronous with the synchronization signal.