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US 6,151,070 AGranted
Image pickup apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHidekage Sato, Tadashi Okino, Takashi Watanabe
Life of this patent
Estimating the term…
Abstract
An image pickup apparatus includes a zoom lens, an electronic-zoom part for varying a magnification by subjecting a video to the processing of electronically varying an angle of view, a detecting circuit for detecting a spatial frequency of the video signal, and a control circuit for controlling a magnification of the electronic-zoom part on the basis of information indicative of the spatial frequency detected by the detecting circuit.
Claims8
An image pickup apparatus comprising:
- optical-zoom means for varying an angle of view by using an optical system;
- electronic-zoom means for varying the angle of view by using electronic image processing;
- detecting means for detecting a predetermined frequency component of an image signal;
- and
- control means for varying a set value of a zoom magnification of said electronic-zoom means on the basis of a detection result by said detecting means, such as to reduce the zoom magnification of said electronic-zoom means in the case that the predetermined frequency component is larger than a predetermined reference signal.
2 more elements
A zooming apparatus comprising:
- electronic-zoom means for varying the angle of view by using electronic image processing;
- detecting means for detecting a predetermined frequency component of an image signal;
- and
- control means for varying a set value of a zoom magnification of said electronic-zoom means on the basis of a detection result by said detecting means, such as to reduce the zoom magnification of said electronic-zoom means in the case that the predetermined frequency is larger than a predetermined reference value.
1 more element
A zooming method comprising:
- electronic-zooming to vary the angle of view by using electronic image processing;
- detecting a predetermined frequency component of an image signal;
- and
- varying a set value of a zoom magnification of said electronic-zooming on the basis of a detection result in said detecting step, such that the zoom magnification of said electronic-zooming is reduced in the case that the predetermined frequency component is higher than a predetermined reference value.
1 more element
Dependencies are inferred from the claim text.