Patent ID: 7500796
Filing Date: 2009-03-10
Classification: G03B,H04N

Abstract:
1. A camera body for still photography comprising an attachment site for electronically coupling with an accessory; a control unit for controlling functions of the camera body and of the accessory, the camera body having at least two different system states; first communication means being a data bus for communicating between the camera body and the accessory; and second communication means being a separate connection comprising an interface circuit for automatic detection of the attachment or removal of the accessory, the control unit of the camera body adapted for changing the system state through the second communication means, wherein the system state for the camera body is not altered during the automatic detection of the attachment or removal of the accessory, and wherein the accessory has a separate output that is changed to a low output state when the accessory has gone through its internal start-up routine and wherein the automatic detection of the attachment or removal of the accessory is done regardless of the system state of the camera body.