>>> [David:]
>>> I wonder how the contacts are made
>>> to the moving CCD? Flexible tape?
>>> Sliding contacts?
>> [J.S.Pitanga:]
<font color=green> >> <a style='text-decoration: underline;' href="http://www.minoltaphotoworld.com/cms/441+M52087573ab0.html</font" target="_blank">http://www.minoltaphotoworld.com/cms/441+M52087573ab0.html</font</a>>
> [David:]
> Username/password required.
>
> As you obviously do have access, what is the
> answer to my question? The only article I've
> seen discusses the optical sensing and
> piezo-electric drive, not how the power and
> signals are coupled to the sensor.
It is beyond me to discuss this technical subject. The text found in the
above linked page is pasted below, hope it is useful. If you still want to
see the descriptive diagrams and pictures, the registering process is
painless and does not require owning a Konica or Minolta product.
J.S.Pitanga
=============================
Structure of the Anti-Shake-system
The movement of the camera is acquired with the help of two
gyroscope-sensors.
It is not only necessary to detect the angle of movement, but also the
speed of it. The signal generated by the sensors measuring the angle of
the camera is passed on to a microprocessor. The microprocessor is getting
additional data about the position of the CCD-mount from a
position-sensor. The data is passed on to the Anti-Shake processor, that
calculates the exact movement that is necessary to compensate for the
camera shake.
The whole process is happening several times in an exposure time of 1/60
seconds.
The CCD-mount is moved by piezo-motors, that have been developed
especially for the Anti-Shake-System.
The engine
The CCD-mount has to be moved extremely fast and precisely to be able to
counteract the camera movement. Regular electro-motors would be much too
slow for this task, furthermore they would be too large and inaccurate.
For that reason, for Anti-Shake the SIDM (Smooth Impact Drive Mechanism)
has been developed. The SIDM uses a piezo-element that is, despite its
extreme compact size, able to move the CCD mount fast and accurately.
The working-principle of piezo-elements is known from electronic lighters.
If a piezo-element is exposed to pressure, a voltage arises. Electronic
lighters use this voltage to generate the lighting spark.
But the effect can also be used the other way round:
If a voltage is applied to a piezo-element, it expands. If the voltage is
withdrawn, it contracts to its normal size. The CCD-mount is shifted by
expanding piezo-elements. If the piezo-element is contracting, the
CCD-mount stops moving. To move the CCD-mount in the opposite direction,
another piezo-element is necessary. This mechanism makes extreme and
accurate shifting of the CCD-mount to the correct position feasible.
Operational range of Anti-Shake
The operational range of conventional image stabilisation systems is
located in a frequency-range between 1 and 15 Hz (oscillation). It is
mainly dimensioned for large focal lengths, because in this case only
small movements have to be compensated for. When having to deal with
slower and larger movements, for example 1 to 2 Hz, the reaction time of
this systems is comparatively high.
The Anti-Shake-system is able to work fast and effectively starting with a
frequency of approximately 0,5 Hz, because it is able to move the CCD in
relatively large distances. Thus the Konica Minolta is also suitable when
using short focal lengths.<!-- ~MESSAGE_AFTER~ -->
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