System and method for continuous auto focus within camera module

摘要

A continuous autofocus system includes an image generation portion including a lens, an autofocus voice coil motor for translating the lens with respect to an image sensor capable of generating image data. The autofocus system further includes a driver IC for controlling the autofocus voice coil motor based on the image data, wherein the image data is directly transmitted to the driver IC thereby continuously maintaining a focused image generated by the image generation portion.

主权项

1. A continuous autofocus system for generating an image, comprising:
an image generation portion having a lens, an autofocus voice coil motor, and an image sensor for generating contrast image data of an image; and, a driver integrated circuit (IC) for controlling the autofocus voice coil motor, thereby translating the lens with respect to the image sensor; wherein the driver IC directly receives the contrast image data such that the driver IC continuously maintains the focus of the image, wherein the contrast image data is generated by the image sensor as a digital signal; the driver IC having a digital-to-analog converter for converting the digital contrast image data to analog contrast image data represented as a voltage potential.