Methods and Apparatus For Synchronizing Multiple Lens Shutters Using GPS Pulse Per Second Signaling
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Abstract
Systems, devices, and methods for synchronizing the operation of a first shutter of a first camera with the operation of a second shutter of a second camera without a physical tether between the first and second cameras. The method includes: receiving a global positioning system (GPS) pulse-per-second (PPS) signal at the first and second cameras; and in response to a unique timing pulse in the PPS signal, simultaneously actuating the first and second shutters.
6 Citations
20 Claims
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1. (canceled)
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2. (canceled)
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11. (canceled)
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12. A camera comprising:
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a lens; a recording plane; a shutter configured to selectively pass photons from the lens to the recording plane; a global positioning system (GPS) chip configured to receive a periodic timing pulse from an external source; and a processor configured to actuate the shutter in response to the timing pulse; where the periodic timing pulse comprises a regular repeating series of timing signals each having a duration of about 100 milliseconds; and wherein each timing signal comprises a rising edge having a duration in the range of one nanosecond to one picosecond. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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14. (canceled)
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17. A method of controlling the actuation of a camera
equipping the camera with a timing module configured to receive a periodic timing signal from a source external to the camera; -
detecting a leading edge of a unique pulse of the timing signal; and in response to detecting the leading edge, actuating the shutter, wherein; the duration of each timing pulse is about 100 milliseconds; and the duration of the leading edge is in the range of one nanosecond to one picosecond. - View Dependent Claims (13, 15, 16)
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18. A method of synchronizing the operation of a first shutter of a first camera with the operation of a second shutter of a second camera without a physical tether between the first and second cameras, comprising the steps of:
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receiving a first signal from a remote global positioning system (GPS); generating, in response to the first signal, a pulse-per-second (PPS) signal at the first and second cameras; and in response to a unique timing pulse embodied within the PPS signal, simultaneously actuating the first and second shutters. - View Dependent Claims (19, 20)
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Specification