Unlock instant, AI-driven research and patent intelligence for your innovation.

Electronic camera and automatic focusing method

A camera and electronic technology, applied in the field of electronic camera and auto focus, to achieve the effect of accurate and high-speed auto focus control and optimized relationship

Inactive Publication Date: 2011-09-28
SONY CORP
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are a variety of automatic focus control systems available for digital cameras, the current system that generates focus evaluation values ​​by extracting the contrast and high-frequency components of the detection range of the captured image, and adjusting the lens position to maximize the focus evaluation value is still mainstream

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electronic camera and automatic focusing method
  • Electronic camera and automatic focusing method
  • Electronic camera and automatic focusing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] Hereinafter, embodiments of the present invention will be described with reference to drawings showing an electronic video camera (hereinafter simply referred to as video camera) according to the present invention.

[0051] Figure 5 is a schematic block diagram of the video camera 10 realized by applying the present invention.

[0052] The video camera 10 includes a lens unit 11 , a C-MOS (Complementary-Metal Oxide Semiconductor) image sensor 12 , a timing generator 13 , a camera signal processing section 14 , a focus evaluation value detection section 15 , and a controller 16 .

[0053] The interior of the lens unit 11 includes a focus lens 21 and a lens driving section 22 for driving the focus lens 21 and other lenses. The lens unit 11 also includes other components including, for example, a zoom lens, an infrared cut filter for cutting infrared rays of incident light, an aperture blade for limiting the amount of incident light, and a sector for blocking incident li...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an electronic camera and an automatic focusing method. The electronic camera comprises an image sensor for exposing a photoelectric conversion member through progressive scanning and generating the video signal; a lens section having a focusing lens and a movement control for moving a focusing lens; a wobbling control section for generating a wobbling control signalfor causing the focusing lens to do a wobbling operation of repeating a series of operations, wherein the series of operations includes driving the focus lens to move for a prescribed distance along the prescribed direction and stopping the operation in a stop prescribed time after the driving operation; an estimated in focus value computing section for generating an estimated in focus value to indicate the degree of in focus of the image of the object of shooting; and a drive section for driving the focusing lens to move and become in focus and driving the focusing lens based on the wobblingcontrol signal. The wobbling control section is adapted to generate the wobbling control signal so that the exposure period of a pixel for generating the focus estimating value is in the stop operation period.

Description

[0001] This application is a divisional application of a patent application with an application date of July 1, 2005, an application number of 200910006255.8, and an invention title of "Electronic Camera and Automatic Focusing Method". The entire contents of which are hereby incorporated by reference. technical field [0002] The invention relates to an electronic camera and an automatic focusing method. Background technique [0003] Electronic image pickup devices formed using a CCD (Charge Coupled Device) image sensor as a photoelectric conversion element, or so-called digital cameras, are popular in the market. [0004] Such digital cameras are typically equipped with an autofocus control feature that automatically focuses the camera lens. Although there are a variety of automatic focus control systems available for digital cameras, the current system that generates focus evaluation values ​​by extracting the contrast and high-frequency components of the detection range o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04N5/232G03B13/36
CPCH04N5/23212H04N23/673G03B13/36
Inventor 竹本聪
Owner SONY CORP