Timing control circuit and timing control method thereof
A timing control circuit includes a receiving circuit and a line memory coupled to the receiving circuit. The line memory is configured for outputting a first data signal during a first frame period, and outputting a second data signal during a second frame period. An end time point of the first frame period coincides with the start time point of the second frame period. One of the first data signal and the second data signal is corresponding to a long H mode; the other of the first data signal and the second data signal is corresponding to a long V mode.
1. A timing control circuit, comprising:
a receiving circuit; and
a line memory, coupled to the receiving circuit, wherein the line memory is configured for:
receiving a horizontal synchronization signal, wherein the horizontal synchronization signal comprises first pulses and second pulses, which come after the first pulses;
outputting a first data signal corresponding to the first pulses, wherein each first pulse has a first period; and
outputting a second data signal corresponding to the second pulses, wherein each second pulse has a second period;
wherein based on a fact that the second period is longer than the first period, a switch from a long V mode to a long H mode takes place, such that the first data signal corresponds to the long V mode and the second data signal corresponds to the long H mode;
wherein based on a fact that the second period is shorter than the first period, a switch from the long H mode to the long V mode takes place, such that the first data signal corresponds to the long H mode and the second data signal corresponds to the long V mode;
wherein one of the first data signal and the second data signal corresponds to the long H mode, and the other of the first data signal and the second data signal corresponds to the long V mode;
wherein whether the first data signal corresponds to the long V mode or the long H mode is determined based on the first period;
wherein whether the second data signal corresponds to the long V mode or the long H mode is determined based on the second period.
2. The timing control circuit of claim 1 , wherein both the first period and the second period are a horizontal period, a horizontal active line, a blanking-or-low-power period, a horizontal back porch, or a horizontal front porch.
3. The timing control circuit of claim 1 , wherein touch operation is performed after the first data signal or the second data signal for display operation is outputted to a source driver, wherein
based on a fact that a first frame period of the first data signal is longer than a second frame period of the second data signal, the first data signal corresponds to the long H mode, and
based on a fact that the first frame period of the first data signal is shorter than the second frame period of the second data signal, the first data signal corresponds to the long V mode.
4. The timing control circuit of claim 1 , wherein a first frame period of the first data signal is not equal to a second frame period of the second data signal, and a first touch report rate corresponding to the first frame period is equal to a second touch report rate corresponding to the second frame period.
5. The timing control circuit of claim 1 , wherein one of the first data signal and the second data signal corresponds to the long H mode and an extended H mode.
6. The timing control circuit of claim 1 , wherein there is a first delay between the first data signal and the first pulses, and the first delay is proportional to the first period; and
wherein there is a second delay between the second data signal and the second pulses, and the second delay is proportional to the second period;
wherein the first delay is not equal to the second delay.
7. The timing control circuit of claim 6 , wherein a ratio of the first delay to the second delay is equal to a ratio of the first period to the second period.
8. The timing control circuit of claim 1 , wherein a first frame period of the first data signal is equal to a second frame period of the second data signal, and a first touch report rate corresponding to the first data signal is not equal to a second touch report rate corresponding to the second data signal.
9. The timing control circuit of claim 1 , wherein a first vertical front porch time corresponding to the first data signal is not equal to a second vertical front porch time corresponding to the first data signal.
10. A timing control method, comprising:
receiving a horizontal synchronization signal, wherein the horizontal synchronization signal comprises first pulses and second pulses, which come after the first pulses;
outputting a first data signal corresponding to the first pulses, wherein each first pulse has a first period; and
outputting a second data signal corresponding to the second pulses, wherein each second pulse has a second period;
wherein based on a fact that the second period is longer than the first period, a switch from a long V mode to a long H mode takes place, such that the first data signal corresponds to the long V mode and the second data signal corresponds to the long H mode;
wherein based on a fact that the second period is shorter than the first period, a switch from the long H mode to the long V mode takes place, such that the first data signal corresponds to the long H mode and the second data signal corresponds to the long V mode;
wherein one of the first data signal and the second data signal corresponds to the long H mode, and the other of the first data signal and the second data signal corresponds to the long V mode;
wherein whether the first data signal corresponds to the long V mode or the long H mode is determined based on the first period;
wherein whether the second data signal corresponds to the long V mode or the long H mode is determined based on the second period.
11. The timing control method according to claim 10 ,
wherein both the first period and the second period are a horizontal period, a horizontal active line, a blanking-or-low-power period, a horizontal back porch, or a horizontal front porch;
wherein based on a difference between a time length of the first period and a time length of the second period, the first data signal and the second data signal correspond to different ones of the long H mode and the long V mode respectively.
12. The timing control method according to claim 10 ,
wherein
based on a fact that a first frame period of the first data signal is longer than a second frame period of the second data signal, the first data signal corresponds to the long H mode, and
based on a fact that the first frame period of the first data signal is shorter than the second frame period of the second data signal, the first data signal corresponds to the long V mode.
13. The timing control method according to claim 10 ,
wherein a first frame period of the first data signal is not equal to a second frame period of the second data signal, and a first touch report rate corresponding to the first frame period is equal to a second touch report rate corresponding to the second frame period.
14. The timing control method according to claim 10 ,
wherein one of the first data signal and the second data signal corresponds to the long H mode and an extended H mode.
15. The timing control method according to claim 10 ,
wherein there is a first delay between the first data signal and the first pulses, and the first delay is proportional to the first period; and
wherein there is a second delay between the second data signal and the second pulses, and the second delay is proportional to the second period;
wherein the first delay is not equal to the second delay.
16. The timing control method according to claim 15 ,
wherein a ratio of the first delay to the second delay is equal to a ratio of the first period to the second period.
17. The timing control method according to claim 10 ,
wherein a first frame period of the first data signal is equal to a second frame period of the second data signal, and a first touch report rate corresponding to the first data signal is not equal to a second touch report rate corresponding to the second data signal.
18. The timing control method according to claim 10 , wherein a first vertical front porch time corresponding to the first data signal is not equal to a second vertical front porch time corresponding to the first data signal.