Presentation device

Details Presentation device Presentation device

2005-07-27

2009-02-10

Perkey, W. B. (Department: 2862)

Photography

Having variable focal length of camera objective

Power zoom

C396S133000, C348S240100

Reexamination Certificate

active

07489862

ABSTRACT:
The presentation device100comprises a shuttle operation member170rotatable in the forward and reverse directions. The shuttle operation member170comprises a momentary mechanism, returning automatically to the neutral position when the user releases the hand. When a sub-microprocessor360inputs from the shuttle operation member170signals representing operating direction and operating angle, on the basis of these signals, it determines a zoom direction and zoom speed, and by giving an instruction to a lens control microprocessor127or a picture signal processor IC300, performs optical zoom or digital zoom. By means of this correction, operability in zoom operations in the presentation device is improved.

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