Radio remote control for photographic equipment

Details Radio remote control for photographic equipment Radio remote control for photographic equipment

2005-06-01

2009-02-03

Koval, Melissa J (Department: 2862)

Photography

Having wireless remote control circuit

C348S211200, C348S734000

Reexamination Certificate

active

07486883

ABSTRACT:
A radio sync system for photographic equipment including a transmitter unit and a receiver unit. The transmitter unit utilizes a power-management scheme for keeping the transmitter unit in a low-power stand-by state except when an RF signal needs to be transmitted, and returning the transmitter unit back into the low-power stand-by state within a predefined short period of time after transmitting the RF signal. The receiver unit utilizes a power-sensing scheme for keeping the receiver unit in a low-power stand-by state when it is not connected to a remote photographic equipment or the remote photographic equipment is powered off but turning the receiver unit on when it is connected to a remote photographic equipment and the remote photographic equipment is powered on such that when an RF signal is received, the receiver unit can send a command signal to operate the remote photographic equipment.

REFERENCES:
patent: 5283610 (1994-02-01), Sasaki
patent: 5359375 (1994-10-01), Clark
patent: 6809759 (2004-10-01), Chiang
patent: 2002/0009296 (2002-01-01), Shaper et al.
patent: 2004/0008265 (2004-01-01), Pedigo et al.
patent: 2004/0101295 (2004-05-01), Clark
patent: 2004/0106377 (2004-06-01), Van Der Winkel et al.
patent: 2004/0156627 (2004-08-01), Lin et al.
patent: 2005/0012823 (2005-01-01), Young
patent: 2005/0249486 (2005-11-01), Murray

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