IP Library › Granted Patent US 10,824,053
Granted Patent B2
US 10,824,053 · App. 15/169,638 · Granted Nov 3, 2020

Photographic synchronization optimization system and method

Inventor: James E. Clark (South Burlington, VT)
Assignee: Lab Partners Associates, Inc.
G03B15/05G03B9/40G03B9/70H05B41/32G03B2215/0557
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Quick Facts
Patent No.
US 10,824,053
App. No.
15/169,638
Granted
Nov 3, 2020
Kind
B2
Abstract

A system and method for synchronizing a photographic lighting device to image acquisition by a camera using light emission profile information to position a light emission profile at a desired location in an image acquisition window. A light energy balance point of a light emission profile can be used to position the balance point at a desired location in an image acquisition window.

Claims (37)

1. A method of synchronizing a photographic lighting device to image acquisition by a camera, the camera generating one or more detectible signals and/or events between a first time at which the camera is triggered to start an image acquisition sequence and a second time at which the camera allows light to pass to an imaging sensor for capturing an image for the image acquisition sequence, the method comprising:

identifying a balance point of a light emission profile for a photographic lighting device associated with the camera;

detecting a predictor signal and/or event occurring between the first and second times, the predictor signal and/or event not being a signal or event intended by the camera for instructing the initiation of an X-sync lighting emission;

based on the detecting of the predictor signal and/or event, wirelessly communicating a wireless signal to the photographic lighting device; and

based on the predictor signal and/or event and the wireless signal, initiating light emission of the photographic lighting device at a third time after the occurrence of the predictor signal and/or event, the third time not being a time at which the camera is configured to provide an X-sync or an FP-sync light emission, the third time being determined using the balance point to position the balance point at a desired location in an image acquisition window.

2. A method according to claim 1 , wherein the desired location is about in the center of the image acquisition window.

3. A method according to claim 1 , wherein the desired location is at a location in the image acquisition window that is other than the center of the image acquisition window.

4. A method according to claim 1 , wherein the balance point is a light energy balance point.

5. A method according to claim 1 , wherein the balance point is a lateral light energy balance point.

6. A method according to claim 1 , wherein the balance point is a 1/x energy balance point.

7. A method according to claim 1 , wherein the balance point is a vertical light energy balance point.

8. A method according to claim 1 , wherein the balance point is a T0.x energy balance point.

9. A method according to claim 1 , wherein the desired location is determined using a user input.

10. A method according to claim 1 , wherein the third time is determined using an offset value to modify the desired location.

11. A method according to claim 1 , wherein the photographic lighting device is remote from the camera, the camera is associated with a first wireless communication functionality, and the photographic lighting device is associated with a second wireless communication functionality, such that the camera and the first wireless communication functionality represent a camera side of a wireless communication and the photographic lighting device and the second wireless communication functionality represent a lighting device side of the wireless communication, and wherein the third time is determined at the camera side.

12. A method according to claim 1 , wherein the photographic lighting device is remote from the camera, the camera is associated with a first wireless communication functionality, and the photographic lighting device is associated with a second wireless communication functionality, such that the camera and the first wireless communication functionality represent a camera side of a wireless communication and the photographic lighting device and the second wireless communication functionality represent a lighting device side of the wireless communication, and wherein the third time is determined at the lighting device side.

13. A method according to claim 1 , further comprising:

determining camera shutter information;

wirelessly communicating the camera shutter information to the remote lighting device, wherein the third time is determined after wirelessly communicating the camera shutter information using the camera shutter information.

14. A method of synchronizing a photographic lighting device to image acquisition by a camera, the camera generating one or more detectible signals and/or events between a first time at which the camera is triggered to start an image acquisition sequence and a second time at which the camera allows light to pass to an imaging sensor for capturing an image for the image acquisition sequence, the method comprising:

identifying a light energy balance point of a light emission profile for a photographic lighting device associated with the camera;

detecting a predictor signal and/or event occurring between the first and second times, the predictor signal and/or event not being a signal or event intended by the camera for instructing the initiation of an X-sync lighting emission;

based on the detecting of the predictor signal and/or event, wirelessly communicating a wireless signal to the photographic lighting device; and

based on the predictor signal and/or event and the wireless signal, initiating light emission of the photographic lighting device at a third time after the occurrence of the predictor signal and/or event, the third time not being a time at which the camera is configured to provide an X-sync or an FP-sync light emission, the third time being determined using the light energy balance point to position the light energy balance point at a location about in the center of an image acquisition window.

15. A system for wirelessly synchronizing a photographic lighting device to an image acquisition by a camera, the system comprising:

one or more processing elements;

a wireless communications circuitry; and

one or more memory elements, said one or more memory elements configured with information for instructing the one or more processing elements to:

identify a balance point of a light emission profile for a photographic lighting device associated with the camera;

detect a predictor signal and/or event occurring between the first and second times, the predictor signal and/or event not being a signal or event intended by the camera for instructing the initiation of an X-sync lighting emission;

based on the detecting of a predictor signal and/or event, use the wireless communications circuitry to wirelessly communicate a wireless signal to the photographic lighting device; and

based on the predictor signal and/or event and the wireless signal, initiating light emission of the photographic lighting device at a third time after the occurrence of the predictor signal and/or event, the third time not being a time at which the camera is configured to provide an X-sync or an FP-sync light emission, the third time being determined using the balance point to position the balance point at a desired location in an image acquisition window.

16. A system according to claim 15 , further comprising a user input configured to receive information to be included in determining the desired location.

17. A system according to claim 15 , wherein the photographic lighting device is remote from the camera, the camera is associated with a first wireless communication functionality, and the photographic lighting device is associated with a second wireless communication functionality, such that the camera and the first wireless communication functionality represent a camera side of a wireless communication and the photographic lighting device and the second wireless communication functionality represent a lighting device side of the wireless communication, and wherein the camera and/or the first wireless communication functionality include at least one of the one or more processing elements configured for determining the third time at the camera side.

18. A system according to claim 15 , wherein the photographic lighting device is remote from the camera, the camera is associated with a first wireless communication functionality, and the photographic lighting device is associated with a second wireless communication functionality, such that the camera and the first wireless communication functionality represent a camera side of a wireless communication and the photographic lighting device and the second wireless communication functionality represent a lighting device side of the wireless communication, and wherein the photographic lighting device and/or the second wireless communication functionality include at least one of the one or more processing elements configured for determining the third time at the lighting device side.

19. A system according to claim 15 , wherein the balance point is a 1/x energy balance point.

20. A system according to claim 15 , wherein the balance point is a T0.x energy balance point.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 2, 2020
From: CLARK, JAMES E
To: LAB PARTNERS ASSOCIATES, INC.
Reel/Frame 054279/0799 →
Continuity (7)
Continuation 14270107 · May 5, 2014
Continuation 13401175 · Feb 21, 2012
Continuation In Part 13208686 · Aug 12, 2011
Continuation PCTUS2010024088 · Feb 12, 2010
Provisional Application 61152089 · Feb 12, 2009
Provisional Application 61444784 · Feb 20, 2011
Related Publication 20180024418A1 · Jan 25, 2018