Event detecting device including an event signal generator and an output signal generator configured to generate an output signal by combining event signals
An event detecting device may include an event signal generator configured to output a plurality of event signals, each including a first data and a second data having mutually complementary attributes and respective address data indicating positions of pixels having output the first data and the second data, a data manager configured to store one of the first data and the second data of a first one of the plurality of event signals and the respective address data in a buffer as first sub data when only one of the first data and the second data of the first one of the plurality of event signals includes the event information, and an output signal generator configured to generate an output signal using the first sub data and a second sub data when the second sub data, different from the first sub data, is stored in the buffer.
1. An event detecting device comprising:
a plurality of pixels arranged in M lines extending in a first direction and N lines extending in a second direction perpendicular to the first direction, the plurality of pixels configured to generate electrical signals by sensing an increase or decrease in light based on movement of an object; and
an event signal generator configured to generate a first event signal of a first group of the plurality of pixels and a second event signal of a second group of the plurality of pixels,
wherein the first event signal includes an address of the first group and event information of the first group,
wherein the second event signal includes an address of the second group and event information of the second group,
wherein the event detecting device is configured to output the event information of the first group and the event information of the second group without outputting the address of the first group and the address of the second group between the event information of the first group and the event information of the second group, and
wherein the M and N are integers.
2. The event detecting device of claim 1 , wherein event detecting device is further configured to output the address of the first group before outputting the event information of the first group.
3. The event detecting device of claim 1 , wherein the first group comprises two or more pixels continuously disposed in a single direction in the plurality of pixels.
4. The event detecting device of claim 2 , wherein the single direction is the second direction, and
wherein the address of the first group indicates a location of the first group in the second direction.
5. The event detecting device of claim 4 , wherein the event information of the first group includes a plurality of on-event signals and the event information of the second group includes a plurality of on-event signals when the event detecting device outputs the event information of the first group and the event information of the second group without outputting the address of the first group and the address of the second group between the event information of the first group and the event information of the second group.
6. The event detecting device of claim 5 , wherein the first group includes four pixels.
7. The event detecting device of claim 5 , wherein the first group includes eight pixels.
8. The event detecting device of claim 5 , wherein the event detecting device is configured to generate the event information of the first group by scanning the plurality of pixels in the second direction or in the first direction.
9. The event detecting device of claim 8 , wherein each of the M lines extending in the first direction includes a plurality of pixel groups arranged in the second direction.
10. The event detecting device of claim 5 , wherein the second group is disposed directly adjacent to the first group in the second direction.
11. An event detecting device comprising:
a plurality of pixels arranged in M lines extending in a first direction and N lines extending in a second direction perpendicular to the first direction, the plurality of pixels configured to generate electrical signals by sensing an increase or decrease in light based on movement of an object; and
an event signal generator configured to generate a first event signal of a first group of the plurality of pixels and a second event signal of a second group of the plurality of pixels,
wherein the first event signal includes an address of the first group and event information of the first group,
wherein the second event signal includes an address of the second group and event information of the second group,
wherein the event detecting device is configured to output the event information of the second group without outputting the address of the second group,
wherein the second group includes eight pixels, and
wherein the M and N are integers.
12. The event detecting device of claim 11 , wherein the event detecting device is configured to generate the event information of the first group by scanning the plurality of pixels in the second direction or in the first direction.
13. The event detecting device of claim 11 , wherein the eight pixels of the second group continuously disposed in a single direction in the plurality of pixels.
14. The event detecting device of claim 13 , wherein the second group is disposed directly adjacent to the first group in the second direction, and
wherein the event detecting device is configured to output the event information of the first group and the event information of the second group without outputting the address of the first group and the address of the second group between the event information of the first group and the event information of the second group.
15. The event detecting device of claim 13 , wherein the address of the second group indicates a location of the second group in the second direction.
16. The event detecting device of claim 15 , wherein the event detecting device is configured to output an additional address of the second group before outputting the address of the second group, and
wherein the additional address of the second group indicates a location of the second group in the first direction.
17. An event detecting device comprising:
a plurality of pixels including a first pixel group and a second pixel group disposed directly adjacent to the first group in a first direction, the plurality of pixels configured to generate electrical signals by sensing an increase or decrease in light based on movement of an object; and
an event signal generator configured to generate a first event signal of the first group and a second event signal of a second group,
wherein the first event signal includes an address of the first group and event information of the first group,
wherein the second event signal includes an address of the second group and event information of the second group,
wherein the event detecting device is configured to output the event information of the first group and the event information of the second group without outputting the address of the first group and the address of the second group between the event information of the first group and the event information of the second group, and
wherein each of the first and second pixel groups include four pixels disposed in the first direction.
18. The event detecting device of claim 17 , wherein the address of the first group indicates a location of the first group in the first direction.
19. The event detecting device of claim 17 , wherein the event information of the first group and the event information of the second group include only one of a plurality of on-event signals or a plurality of off-event signals when the event detecting device outputs the event information of the first group and the event information of the second group without outputting the address of the first group and the address of the second group between the event information of the first group and the event information of the second group.