Patent ID: 7536097
Filing Date: 2009-05-19
Classification: G03B,H04N

Abstract:
1. An autofocusing apparatus of a camera comprising: a lens section on which a light signal is incident; an image sensor and ISP section that receives the light signal incident on the lens section so as to convert into an electrical signal and then outputs digitalized image data; an autofocus digital signal processor that receives the image data from the image sensor and ISP section so as to extract predetermined image components, divides the central region of a picture into N regions (N is an integer larger than two), calculates a focus value for each region by integrating the predetermined image components, and calculates the maximum value while moving the focus lens of the lens section in the up and down direction in accordance with the focus value calculated for each region; and a driving section that drives the focus lens of the lens section; wherein each of the N regions is composed of an extraction and integration line region which extracts predetermined image components and integrates the extracted predetermined image components, an algorithm operation line region which calculates a focus value in accordance with the integrated value of the predetermined image components, and a lens driving line region which drives the focus lens of the lens section in the up and down direction in accordance with the calculated focus value; and wherein the extraction and integration line region, which extracts predetermined image components and integrates the extracted predetermined image components, is composed of lines based on multiples of 8.