TTL Photographic Wireless Communication System and Method with Exposure Compensation Value Transfer to a Remote Lighting Device
AssigneeLab Partners Associates, Inc.
InventorJames E. Clark
Life of this patent
Estimating the term…
Abstract
A system and method for synchronizing a remote lighting device to a camera using a hot shoe connection and an external device connected via the hot shoe connector. The external device receives TTL data and a synchronization signal from the camera via the hot shoe connector. The external device wirelessly communicates using a radio frequency transmitter an exposure compensation value from the external device to a remote lighting device. The external device also wirelessly communicates a synchronization signal and a TTL information to the remote lighting device for use in synchronizing the remote lighting device to image acquisition by the camera.
Claims20
A method of synchronizing a remote lighting device to image acquisition of a camera, the camera having a hot shoe connector with an external device capable of wireless communication connected to the hot shoe connector, the external device including a radio frequency transmitter for wireless communication, the method comprising:
- receiving a TTL data at the external device capable of wireless communication, said receiving a TTL data occurring via the hot shoe connector of the camera;
- receiving a synchronization signal at the external device via the hot shoe connector of the camera;
- wirelessly communicating an exposure compensation value from the external device to a remote lighting device using the radio frequency transmitter;
- and
- wirelessly communicating using the radio frequency transmitter a remote synchronization from the external device to the remote lighting device for synchronizing the remote lighting device to an image acquisition by the camera using the remote synchronization signal.
A method of synchronizing a remote flash device to image acquisition of a camera, the camera having a hot shoe connector with an external device capable of wireless communication connected to the hot shoe connector, the external device including a radio frequency transmitter for wireless communication, the method comprising:
- receiving a TTL data at the external device capable of wireless communication, said receiving a TTL data occurring via the hot shoe connector of the camera;
- receiving a synchronization signal at the external device via the hot shoe connector of the camera;
- wirelessly communicating an exposure compensation value from the external device to a remote flash device using the radio frequency transmitter;
- wirelessly communicating a TTL information from the external device to the remote flash device, the TTL information being based on the TTL data from the camera body using the radio frequency transmitter;
- and
- wirelessly communicating using the radio frequency transmitter the remote synchronization signal from the external device to the remote flash device for synchronizing the remote flash device to an image acquisition by the camera using the remote synchronization signal and the TTL information.
A photographic device with wireless communication functionality for synchronizing a remote flash device to image acquisition of a camera having a first hot shoe connector, the device comprising:
- a second hot shoe connector configured to connect to the first hot shoe connector;
- a first wireless communication functionality;
- and
- a processing element, said processing element configured to receive a TTL data and a synchronization signal from the camera via the second hot shoe connector when the second hot shoe connector is connected to the first hot shoe connector, said wireless communication functionality connected to the processing element to wirelessly communicate a TTL information based on the TTL data, the synchronization signal, and an exposure compensation value from the external device to a remote flash device.
Dependencies are inferred from the claim text.