Invention Grant
- Patent Title: Image-pickup apparatus, method of determining attachment of accessory device and method of distinguishing attached accessory device
- Patent Title (中): 图像拾取装置，确定附件装置附件的方法和区分所附附件装置的方法
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Application No.: US11778246Application Date: 2007-07-16
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Publication No.: US07884876B2Publication Date: 2011-02-08
- Inventor: Daisuke Ishikawa
- Applicant: Daisuke Ishikawa
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2006-201997 20060725
- Main IPC: H04N5/232
- IPC: H04N5/232 ; G03B5/02
Abstract:
An image-pickup apparatus is disclosed onto which an accessory device is detachably attached and which is capable of recognizing that an output from a light-receiving sensor is influenced by an attachment of the accessory device. The image-pickup apparatus includes a first detector which is capable of outputting a signal corresponding to an object distance. The apparatus further includes a determining device which determines an attachment of the accessory device onto the image-pickup apparatus on the basis of a predetermined signal output from the first detector.
Public/Granted literature
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