Patent ID: 6088533
Filing Date: 2000-07-11
Classification: G02B,G03B

Abstract:
A signal transmission apparatus for use in an image blur prevention system, the image blur prevention system including a first apparatus and a second apparatus independent of the first apparatus and detachably connectable to the first apparatus, the first apparatus including an image blur detection device and a predetermined operation portion for performing a predetermined operation, and the second apparatus including an image blur prevention device for performing an image blur prevention operation in accordance with an output of the image blur detection device, the signal transmission apparatus comprising:transmission means for performing a first transmission operation transmitting a signal in accordance with the output of the image blur detection device at every predetermined time period through one transmission line between the first apparatus and the second apparatus, and for performing a second transmission operation transmitting an operation start command signal for starting an image blur prevention operation of the image blur prevention device through said one transmission line;determination means for determining when the predetermined operation portion performs a predetermined operation; andactivation means for causing said transmission means to perform the second transmission operation a single time in response to a determination result of said determination means that the predetermined operation portion performs a predetermined operation, and thereafter causes said transmission means to continuously perform the first transmission operation during a time in which said determination means determines that the predetermined operation portion performs the predetermined operation.