1. An organic light emitting display device comprising:
pixels each having a driving transistor and being configured to initialize a voltage of the driving transistor by an initialization power;
a gray level determining unit for generating a gray level value using externally supplied data; and
an initialization power generator for controlling a voltage level of the initialization power to correspond to the gray level value.
2. The organic light emitting display device according to claim 1, wherein the gray level value corresponds to an average gray level of the externally supplied data corresponding to one frame.
3. The organic light emitting display device according to claim 1, wherein the gray level value corresponds to a lowest gray level of the externally supplied data corresponding to one frame.
4. The organic light emitting display device according to claim 1, wherein the gray level value corresponds to an average gray level of the externally supplied data corresponding to one horizontal line.
5. The organic light emitting display device according to claim 1, wherein the gray level value corresponds to a lowest gray level of the externally supplied data corresponding to one horizontal line.
6. The organic light emitting display device according to claim 1, wherein the initialization power generator is configured to control the voltage level of the initialization power to decrease as the gray level value increases from a low brightness gray level value to a high brightness gray level value.
7. The organic light emitting display device according to claim 1, wherein the initialization power generator is configured to control the voltage level of the initialization power so that a first voltage difference between the initialization power and a first data signal corresponding to a low brightness is greater than a second voltage difference between the initialization power and a second data signal corresponding to a high brightness.
8. The organic light emitting display device according to claim 7, wherein the initialization power generator is further configured to control the voltage level of the initialization power so that a voltage difference between the initialization power and a data signal increases from the first voltage difference to the second voltage difference as the data signal decreases from the first data signal to the second data signal.
9. The organic light emitting display device according to claim 1, wherein each of the pixels comprises:
an organic light emitting diode (OLED);
the driving transistor for controlling an amount of current supplied to the OLED; and
a second transistor coupled between a gate electrode of the driving transistor and the initialization power generator.
10. The organic light emitting display device according to claim 9, wherein each of the pixels further comprises a third transistor for diode-connecting the driving transistor.
11. A driving method of an organic light emitting display device comprising pixels each having a driving transistor and being configured to initialize a voltage of a gate electrode of the driving transistor using an initialization power, the driving method comprising:
extracting a gray level value using externally supplied data; and
controlling a voltage level of the initialization power to correspond to the gray level value.
12. The driving method according to claim 11, wherein the gray level value corresponds to an average gray level of the externally supplied data corresponding to one frame.
13. The driving method according to claim 11, wherein the gray level value corresponds to a lowest gray level of the externally supplied data corresponding to one frame.
14. The driving method according to claim 11, wherein the gray level value corresponds to an average gray level of the externally supplied data corresponding to one horizontal line.
15. The driving method according to claim 11, wherein the gray level value corresponds to a lowest gray level of the externally supplied data corresponding to one horizontal line.
16. The driving method according to claim 11, wherein the controlling of the voltage level of the initialization power to correspond to the gray level value comprises decreasing the voltage level of the initialization power corresponding to a low brightness gray level value toward the initialization power corresponding to a high brightness gray level.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system for improved optically black reference pixels in a complementary metal-oxide-semiconductor (CMOS) imaging system-on-chip (iSoC) sensor, comprising:
a read component configured to indicate pixels to be read out during a readout time interval;
a first reset component configured to indicate pixels to be reset during the readout time interval;
a second reset component configured to preserve a validity of a frame during the readout time interval; and
a control component configured to facilitate an integration time of column fixed pattern noise (FPN) rows independently of an integration time of other rows.
2. The system of claim 1, wherein the control component is further configured to mitigate blooming into sampled rows from surrounding rows.
3. The system of claim 2, wherein the sampled rows are optical black (OB) rows and the surrounding rows are rows adjacent the OB rows, wherein the adjacent rows were not previously reset.
4. The system of claim 2, wherein the sampled rows are a first clear row and a last clear row and the surrounding rows are contiguous non-reset rows.
5. The system of claim 1, wherein the control component is further configured to cause a first pointer to continuously rotate within the column FPN rows.
6. The system of claim 1, wherein the control component is further configured to cause a first pointer to jump on a second cycle, wherein the first pointer arrives at a first FPN OB row one line before a second pointer arrives at the first FPN OB row.
7. The system of claim 1, wherein the control component is further configured to extend an activity region of a first pointer to rows that are not read.
8. The system of claim 1, wherein the control component is further configured to cycle a first pointer within rows that are not read and jump the first pointer to a start of an FPN OB window one line ahead of a second pointer.
9. The system of claim 1, wherein the control component is further configured to use a first pointer to reset a set of extra rows around active windows.
10. The system of claim 1, wherein the control component is further configured to synchronize a first pointer to the frame.
11. A method for improved optically black reference pixels in a complementary metal-oxide-semiconductor (CMOS) imaging system-on-chip (iSoC) sensor, comprising:
placing a first pointer in idle mode when column fixed pixel noise (FPN) optical black (OB) rows are not being read;
implementing the first pointer one line before a second pointer arrives at a first column FPN OB row; and
diverting a third pointer and a fourth pointer away from the column FPN OB rows when the third pointer and the fourth pointer reach the column FPN OB rows.
12. The method of claim 11, wherein the placing comprises
allocating a first subset of dummy rows to the first pointer and a second subset of dummy rows to the third pointer, wherein the first subset of dummy rows are independent of the second subset of dummy rows; and
sending the first pointer to the first subset of dummy rows when the column FPN OB rows are not being read.
13. The method of claim 11, further comprising:
continuously rotating the first pointer within the column FPN OB rows.
14. The method of claim 11, further comprising:
jumping the first pointer on a second cycle, wherein the first pointer arrives at the first FPN OB row one line before the second pointer arrives at the first FPN OB row.
15. The method of claim 11, further comprising:
extending an activity region of the first pointer to rows that are not read.
16. The method of claim 15, further comprising:
cycling the first pointer within the rows that are not read; and
jumping the first pointer to a start of an FPN OB window one line ahead of the second pointer.
17. The method of claim 11, further comprising:
using the first pointer to reset a set of extra rows around active windows.
18. The method of claim 17, further comprising:
synchronizing the first pointer to a frame.
19. A method, comprising
indicating pixels to be read out and reset during a readout time interval;
preserving a validity of a frame; and
mitigating an integration time of column fixed pattern noise (FPN) rows independently of an integration time of other rows through utilization of a vertical pointer.
20. The method of claim 19, further comprising mitigating blooming into sampled rows from surrounding rows with the vertical pointer.