| 摘要 |
A pixel array comprises plural pixels in a row for providing image capture signals in which at least one pixel in the row provides an automatic light control signal; a first line resets the image capture pixels and a second reset line resets the automatic light control pixel. A similar arrangement is also independently claimed where the imaging pixels have transfer transistors between a photosensor and floating diffusion region that transfers charge at the end of an integration period; each auto light control pixel also has a photosensor coupled to a floating diffusion region during charge integration. An alternative imager control method performs automatic light control with pixels having three-transistor (3T) characteristics and imaging using correlated double sampling on plural four-transistor (4T) pixels; also independently claimed is a method of reading and resetting an imager array in which a percentage of the pixels have three-transistor characteristics. A further method simply comprises imaging with a first pixel set and performing automatic light control with signals from a second pixel set. Methods of forming at least some of these arrangements are also claimed. |
