CMOS sensor

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CMOS sensor

A CMOS-based chip that records the intensities of light as variable charges similar to a CCD chip. Although initially used in less expensive digital cameras, the quality of CMOS sensors has improved steadily.

CMOS sensors have advantages over CCDs. They can be made like other CMOS chips on standard CMOS fabrication lines, which makes fabrication less costly, and auxiliary circuitry, such as analog-to-digital conversion, can be combined on the same chip. In addition, CMOS chips use less power than CCDs.

Active-Pixel Sensors
Another advantage is speed. Also called "active-pixel sensors," CMOS sensors perform in parallel with amplifiers in each pixel that convert charges to electrical voltages. In contrast, CCDs transfer their charges to shift registers before converting to voltage at a single amplifier stage.

Sony's Exmor CMOS Sensor
Exmor shortens the analog path even more by performing A/D conversion on each column of pixels. While all CMOS sensors perform noise cancellation in the analog domain, Exmor also deploys it in the digital domain. Contrast with CCD sensor. See CMOS camera and digital camera.

References in periodicals archive ?
8-inch exmor sensor, providing unbelievable image quality and low-light effect, its IR LEDs work up to 50 meters, which helps to render clear images in dim or dark surroundings.
7 MP Sony IMX220 Exmor RS shooter on its rear and the front features a 5 MP camera.
Tokyo, Nov 17, 2014 - (JCN Newswire) - Sony Corporation today announces the commercialization of the Exmor RS IMX230 for smartphone cameras and other devices requiring increasingly sophisticated image-capture functionality.
Xperia M2 Aqua combines an 8 MP camera with Sony technologies like Exmor RS for mobile image sensor, HDR imaging, SteadyShot for video, Xperia camera apps and a dedicated camera button to help capture the perfect shot whether above or below the water.
0-type Exmor R CMOS sensor that is far larger than the sensor in normal consumer camcorders, said a statement from the company.
3" Exmor R CMOS sensor, a faster Processor, high ISO and obviously the super zoom.
The first two available Cricket models offer 720p and 1080p resolutions at 60 fps, using Sony Exmor CMOS sensors suitable for challenging low-light conditions and dynamic scenes.
3-type CMOS image sensor Exmor RS for mobile with 20.
The smartphone shares capabilities with Sony digital cameras and features Exmor RS for mobile, the world's first image sensor with HDR (High Dynamic Range) video recording for smartphones, said the company
13MP Fast Capture camera with Exmor RS for mobile, 16x digital zoom, HDR video, Superior Auto and Noise Reduction to effortlessly capture razor sharp pictures and videos in any condition
5GHz dual-core processor for faster performance and a 12MP camera with Exmor R sensor that takes pictures in just over one second from standby mode.
proc Mob last B aut 280 is p cam Ex ou But, while it doesn't have auto brightness, the 280x720 resolution screen is pin-sharp, and the camera's 12-megapixel Exmor R sensor throws out satisfying snaps.