AS260 datasheet(28/45 Pages) ONSEMI

28 / 45 page

AR0260 DS Rev. G Pub. 4/15 EN

©Semiconductor Components Industries, LLC,2015.

AR0260: 1/6-Inch 1080P High-Definition (HD) Digital Image Sensor

Digital Processing Chain

Digital Gain

Image stream processing starts with multiplication of all pixel values by a programmable

digital gain. Independent color channel digital gain can be adjusted with registers.

Adaptive PGA (APGA)

Lenses tend to produce images whose brightness is significantly attenuated near the

edges. There are also other factors causing fixed pattern signal gradients in images

captured by image sensors. The cumulative result of all these factors is known as image

shading. The AR0260 has an embedded shading correction module that can be

programmed to counter the shading effects on each individual R, Gb, Gr, and B color

signal.

In some cases, different illuminants can introduce different color shading response. The

APGA feature on the AR0260 will compensate for the dependency of the lens shading of

the illuminant. The AR0260 will allow for up to three different illuminants to be compen-

sated for.

Image Scaling and Cropping

To ensure that the size of images output by the AR0260 can be tailored to the needs of all

users, the IFP includes a scaler module. When enabled, this module performs rescaling

of incoming images—shrinks them to arbitrarily selected width and height without

reducing the field of view and without discarding any pixel values.

By configuring the cropped and output windows to various sizes, different zooming

levels including 4X, 2X, and 1X can be achieved. The location of the cropped window is

configurable so that panning is also supported. The height and width definitions for the

output window must be equal to or smaller than the cropped image. The image crop-

ping and scaler module can be used together to implement a digital zoom and pan.

AS260 Datasheet(PDF) 28 Page - ON Semiconductor