Camera provided with camera-shake compensation functionality

• US 20060008263A1
• Filed: 07/07/2005
• Published: 01/12/2006
• Est. Priority Date: 07/09/2004
• Status: Active Grant

• Current Assignee: PENTAX RICOH IMAGING COMPANY, LTD.
• Original Assignee: Pentax Corporation (Hoya Corporation)
• Inventors: Kakiuchi, Shinichi
• Granted Patent: US 7,400,823 B2
• Time in Patent Office: Days
• US Class Current: 396/55
• CPC Class Codes: G02B 27/646 compensating for small deviations, e.g. due to vibration or shake movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68
• CPC Class Codes: G03B 17/02 Bodies
• CPC Class Codes: H04N 23/52 Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
• CPC Class Codes: H04N 23/60 Control of cameras or camera modules
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A camera provided with camera-shake compensation functionality that comprises a camera-shake detector, a photographing mode selector, an adjuster, and an anti-shake mechanism. The camera-shake detector detects a quantity of shake of the camera. The photographing mode selector is used to select a photographing mode. The adjuster adjusts output signals from the camera-shake detector, in accordance with the photographing mode selected by the photographing mode selector. The anti-shake mechanism compensates for a camera-shake to be counteracted, based on the output signals adjusted by the adjuster.

Claims

1. A camera provided with camera-shake compensation functionality, comprising:

a camera-shake detector that detects quantity of shake of said camera;

a photographing mode selector that is used to select a photographing mode;

an adjuster that adjusts output signals from said camera-shake detector, in accordance with said photographing mode selected by said photographing mode selector; and

an anti-shake mechanism that compensates for a camera-shake to be counteracted, based on the output signals adjusted by said adjuster.

2. A camera according to claim 1, wherein said adjuster extracts predetermined frequency components from the output signals in accordance with said photographing mode.

3. A camera according to claim 2, wherein said photographing mode is classified by a set of information including at least one of a size of an object, a distance to said object, a magnification, a quantity of movement in an image plane, a shutter speed, a panning operation, and use of a tripod.

4. A camera according to claim 2, wherein said adjuster extracts frequency components of the output signals in a high frequency range when said photographing mode is set as an astronomical photographing mode;

said adjuster extracts frequency components of the output signals from about the high frequency to about first middle frequency ranges when said photographing mode is set as a bird photographing mode;

said adjuster extracts frequency components of the output signals from about the high frequency to about second middle frequency ranges, the second middle frequency range being lower than the first middle frequency range, when said photographing mode is set as a train photographing mode;

said adjuster extracts frequency components of the output signals from about the first middle frequency to about low frequency when said photographing mode is set as a portrait photographing mode; and

said adjuster extracts frequency components of the output signals in the low frequency range when said photographing mode is set as a night view photographing mode.

5. A camera according to claim 4, wherein said camera-shake detector comprises a gyro sensor, and said adjuster comprises a plurality of band pass filters, each having a different frequency band, and a switch that selectively connects said gyro sensor to one of said band pass filters.

6. A camera according to claim 4, wherein said high frequency range is around 30 Hz, said first middle frequency range is around 20 Hz, and said low frequency range is around 10 Hz.