verb (used with object) 1. to keep in existence or continuance; preserve; retain: to maintain good relations with neighboring countries. 2. to keep in an appropriate condition, operation, or force; keep unimpaired: to maintain order; to maintain public highways.
CMOS is a type of integrated circuit chip manufacturing process that can be used for many things, including digital camera image sensors.hey also require less power to use than do CCD sensors, which makes them popular in mobile devices. The drawback to CMOS sensors when used in cameras is that they tend to create photographs with a lot of image noise when used in lower light situations, though this is not always the case.
Today, most digital still cameras use a CMOS sensor because CMOS sensor technology has leapfrogged CCDs in recent years. CCD is still in use for cheap low entry cameras, but weak in burst mode.Both types of sensor accomplish the same task of capturing light and converting it into electrical signals.Each cell of a CCD image sensor is an analog device.he charges are converted to voltage one pixel at a time as they are read from the chip. Additional circuitry in the camera converts the voltage into digital information. A CMOS imaging chip is a type of active pixel sensor made using the CMOS semiconductor process.