Granted Patent B2

US 12,445,566 · App. 18/559,188 · Granted Oct 14, 2025

Inventor: Mingming Sun (Zhejiang, CN)

Assignee: ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD.

H04N5/06H04N23/45H04N23/633H04N23/741

Abstract

Claims (56)

1. A method for realizing shutter synchronization of a camera, wherein the camera comprises a plurality of sensors; shutter types of the plurality of sensors are different; the method comprises:

acquiring a periodic synchronization reference signal and a synchronization signal corresponding to each of the plurality of sensors; and

adjusting, with the synchronization reference signal as a reference, at least one of synchronization signal delays or exposure delays of the plurality of sensors to align exposure areas corresponding to the plurality of sensors;

wherein the plurality of sensors comprise a first sensor and a second sensor; the synchronization signal comprises: a first synchronization signal corresponding to the first sensor and a second synchronization signal corresponding to the second sensor; and

wherein a frame period and an exposure duration of a first synchronization signal of an i-th frame are same as a frame period and an exposure duration of a second synchronization signal of an i-th frame, wherein i is a positive integer; an exposure starts from a rising edge of a first synchronization signal of each frame, and an exposure starts after a preset exposure delay is executed on a second synchronization signal of each frame.

2. The method of claim 1 , wherein in a case where an exposure time period corresponding to a second synchronization signal of a j-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of a j-th frame, adjusting, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors comprises:

aligning a rising edge of the second synchronization signal of the j-th frame with a rising edge of a synchronization reference signal of a j-th frame, wherein j is a positive integer; and

performing, with a duration of an exposure delay of the second synchronization signal of the j-th frame as a duration of a synchronization signal delay of the first synchronization signal of the j-th frame and the rising edge of the synchronization reference signal of the j-th frame as a starting point, a delay on the first synchronization signal of the j-th frame.

3. The method of claim 1 , further comprising:

in a case where an exposure time period corresponding to a second synchronization signal of an m-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of an m-th frame and in a case where at least one of frame periods or exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame change, calculating, according to at least one of a change in the frame periods or a change in the exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame, an exposure delay corresponding to the second synchronization signal of the m-th frame, wherein m is a positive integer; and

wherein adjusting, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors comprises: aligning, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame.

4. The method of claim 3 , further comprising: completing calculation of the exposure delay corresponding to the second synchronization signal of the m-th frame before an arrival of a rising edge of a synchronization reference signal of an m-th frame.

5. The method of claim 3 , wherein aligning, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame comprises:

aligning a rising edge of the second synchronization signal of the m-th frame with the rising edge of the synchronization reference signal of the m-th frame;

adjusting, according to the exposure delay of the second synchronization signal of the m-th frame, a delay of a rising edge of the exposure time period corresponding to the first synchronization signal of the m-th frame with respect to the rising edge of the synchronization reference signal of the m-th frame; and

performing, with a duration of the exposure delay of the second synchronization signal of the m-th frame as a duration of a synchronization signal delay of the first synchronization signal of the m-th frame and the rising edge of the synchronization reference signal of the m-th frame as a starting point, a delay on the first synchronization signal of the m-th frame.

6. A device for realizing shutter synchronization of a camera, comprising a processor and a non-transitory computer-readable storage medium, wherein the computer-readable storage medium is configured to store instructions, wherein the instructions, when executed by the processor, cause the processor to implement:

acquiring a periodic synchronization reference signal and a synchronization signal corresponding to each of the plurality of sensors; and

adjusting, with the synchronization reference signal as a reference, at least one of synchronization signal delays or exposure delays of the plurality of sensors to align exposure areas corresponding to the plurality of sensors;

wherein the plurality of sensors comprise a first sensor and a second sensor; the synchronization signal comprises: a first synchronization signal corresponding to the first sensor and a second synchronization signal corresponding to the second sensor; and

wherein a frame period and an exposure duration of a first synchronization signal of an i-th frame are same as a frame period and an exposure duration of a second synchronization signal of an i-th frame, wherein i is a positive integer; an exposure starts from a rising edge of a first synchronization signal of each frame, and an exposure starts after a preset exposure delay is executed on a second synchronization signal of each frame.

7. The method of claim 4 , wherein aligning, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame comprises:

aligning a rising edge of the second synchronization signal of the m-th frame with the rising edge of the synchronization reference signal of the m-th frame;

adjusting, according to the exposure delay of the second synchronization signal of the m-th frame, a delay of a rising edge of the exposure time period corresponding to the first synchronization signal of the m-th frame with respect to the rising edge of the synchronization reference signal of the m-th frame; and

performing, with a duration of the exposure delay of the second synchronization signal of the m-th frame as a duration of a synchronization signal delay of the first synchronization signal of the m-th frame and the rising edge of the synchronization reference signal of the m-th frame as a starting point, a delay on the first synchronization signal of the m-th frame.

8. The device of claim 6 , wherein in a case where an exposure time period corresponding to a second synchronization signal of a j-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of a j-th frame, the processor is caused to adjust, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors in the following manners:

aligning a rising edge of the second synchronization signal of the j-th frame with a rising edge of a synchronization reference signal of a j-th frame, wherein j is a positive integer; and

performing, with a duration of an exposure delay of the second synchronization signal of the j-th frame as a duration of a synchronization signal delay of the first synchronization signal of the j-th frame and the rising edge of the synchronization reference signal of the j-th frame as a starting point, a delay on the first synchronization signal of the j-th frame.

9. The device of claim 6 , the processor is further caused to implement:

in a case where an exposure time period corresponding to a second synchronization signal of an m-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of an m-th frame and in a case where at least one of frame periods or exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame change, calculating, according to at least one of a change in the frame periods or a change in the exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame, an exposure delay corresponding to the second synchronization signal of the m-th frame, wherein m is a positive integer; and

wherein adjusting, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors comprises: aligning, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame.

10. The device of claim 9 , the processor is further caused to implement: completing calculation of the exposure delay corresponding to the second synchronization signal of the m-th frame before an arrival of a rising edge of a synchronization reference signal of an m-th frame.

11. The device of claim 9 , wherein the processor is further caused to align, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame in the following manners:

aligning a rising edge of the second synchronization signal of the m-th frame with the rising edge of the synchronization reference signal of the m-th frame;

adjusting, according to the exposure delay of the second synchronization signal of the m-th frame, a delay of a rising edge of the exposure time period corresponding to the first synchronization signal of the m-th frame with respect to the rising edge of the synchronization reference signal of the m-th frame; and

performing, with a duration of the exposure delay of the second synchronization signal of the m-th frame as a duration of a synchronization signal delay of the first synchronization signal of the m-th frame and the rising edge of the synchronization reference signal of the m-th frame as a starting point, a delay on the first synchronization signal of the m-th frame.

12. The device of claim 10 , wherein the processor is further caused to align, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame in the following manners:

aligning a rising edge of the second synchronization signal of the m-th frame with the rising edge of the synchronization reference signal of the m-th frame;

adjusting, according to the exposure delay of the second synchronization signal of the m-th frame, a delay of a rising edge of the exposure time period corresponding to the first synchronization signal of the m-th frame with respect to the rising edge of the synchronization reference signal of the m-th frame; and

performing, with a duration of the exposure delay of the second synchronization signal of the m-th frame as a duration of a synchronization signal delay of the first synchronization signal of the m-th frame and the rising edge of the synchronization reference signal of the m-th frame as a starting point, a delay on the first synchronization signal of the m-th frame.

13. A non-transitory computer readable storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a processor, cause the processor to implement:

acquiring a periodic synchronization reference signal and a synchronization signal corresponding to each of the plurality of sensors; and

adjusting, with the synchronization reference signal as a reference, at least one of synchronization signal delays or exposure delays of the plurality of sensors to align exposure areas corresponding to the plurality of sensors;

wherein the plurality of sensors comprise a first sensor and a second sensor; the synchronization signal comprises: a first synchronization signal corresponding to the first sensor and a second synchronization signal corresponding to the second sensor; and

wherein a frame period and an exposure duration of a first synchronization signal of an i-th frame are same as a frame period and an exposure duration of a second synchronization signal of an i-th frame, wherein i is a positive integer; an exposure starts from a rising edge of a first synchronization signal of each frame, and an exposure starts after a preset exposure delay is executed on a second synchronization signal of each frame.

14. The storage medium of claim 13 , wherein in a case where an exposure time period corresponding to a second synchronization signal of a j-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of a j-th frame, the processor is caused to adjust, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors in the following manners:

aligning a rising edge of the second synchronization signal of the j-th frame with a rising edge of a synchronization reference signal of a j-th frame, wherein j is a positive integer; and

performing, with a duration of an exposure delay of the second synchronization signal of the j-th frame as a duration of a synchronization signal delay of the first synchronization signal of the j-th frame and the rising edge of the synchronization reference signal of the j-th frame as a starting point, a delay on the first synchronization signal of the j-th frame.

15. The storage medium of claim 13 , the processor is further caused to implement:

in a case where an exposure time period corresponding to a second synchronization signal of an m-th frame is to be aligned with an exposure time period corresponding to a first synchronization signal of an m-th frame and in a case where at least one of frame periods or exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame change, calculating, according to at least one of a change in the frame periods or a change in the exposure durations of the first synchronization signal of the m-th frame and the second synchronization signal of the m-th frame, an exposure delay corresponding to the second synchronization signal of the m-th frame, wherein m is a positive integer; and

wherein adjusting, with the synchronization reference signal as the reference, at least one of the synchronization signal delays or the exposure delays of the plurality of sensors comprises: aligning, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame.

16. The storage medium of claim 15 , the processor is further caused to implement: completing calculation of the exposure delay corresponding to the second synchronization signal of the m-th frame before an arrival of a rising edge of a synchronization reference signal of an m-th frame.

17. The storage medium of claim 15 , wherein the processor is further caused to align, according to the exposure delay of the second synchronization signal of the m-th frame, the exposure time period of the first synchronization signal of the m-th frame with the exposure time period of the second synchronization signal of the m-th frame in the following manners:

aligning a rising edge of the second synchronization signal of the m-th frame with the rising edge of the synchronization reference signal of the m-th frame;

adjusting, according to the exposure delay of the second synchronization signal of the m-th frame, a delay of a rising edge of the exposure time period corresponding to the first synchronization signal of the m-th frame with respect to the rising edge of the synchronization reference signal of the m-th frame; and

performing, with a duration of the exposure delay of the second synchronization signal of the m-th frame as a duration of a synchronization signal delay of the first synchronization signal of the m-th frame and the rising edge of the synchronization reference signal of the m-th frame as a starting point, a delay on the first synchronization signal of the m-th frame.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (61)