On 17 Oct 00 at 12:58, Robert Rolf wrote:


> Yes, they use gyros. Ultrasonic gyros where the u/s mechanical
> wave bounces around inside a piezo crystal. They sense the phase shift
> resulting from motion, and then change the clock timing on the CCD chip
> so that the image gets stabilized as it gets shifted out. This
> technique can only compensate for horizontal/vertical motion, not
> rotation, but that is sufficient for most users.
>
Yes they all use piezo gyros but at least one camera manufacturer
uses a 2-axis-coil-lense-in-a-servo arrangement, like a cd lense to
keep the image stable. That is... electro-mechanical stabilization.


Lance Allen
Technical Officer
Embedded Systems Lab
Computer Systems Engineering
Department of Electrical
and Electronic Engineering
University of Auckland
New Zealand

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