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.
Analog cameras are cameras that generate a video signal in analog format. The analog signal is digitized by an image acquisition device. The video signal is based on the television standard, making analog the most common standard for representing video signals. You may have heard the term charge-coupled device (CCD), and wondered how it relates to the analog video signal.