Sony Commercializes APS-C size CMOS Image Sensor with Industry-leading 12.47 Effective Megapixel Resolution

Aug 20, 2007
Sony Commercializes APS-C size CMOS Image Sensor with Industry-leading 12.47 Effective Megapixel Resolution
"IMX021" CMOS Image Sensor

Sony today announced the commercialization of "IMX021", an APS-C size (diagonal: 28.40mm/Type 1.8) 12.47 effective megapixel ultra-high speed, high image quality CMOS image sensor designed to meet the increasing requirement for rapid image capture and advanced picture quality within digital SLR cameras. Sony will position "IMX021" as a key device capable of generating new added value in the high-growth digital SLR camera market, actively promoting its use within Sony and externally.

One of the main strengths of CMOS image sensors is their potential for system integration, enabling both analog and digital circuits to be combined on the same chip. "IMX021" maximizes these advantages, while also incorporating Sony's newly developed "Column-Parallel A/D Conversion Technique", providing each column within the sensor with its own A/D converter.

This system enables analog signals transferred from the Sensor's vertical signal lines to be A/D converted directly, over the shortest possible distance. It also minimizes image degradation caused by the noise that arises during analog processing, while at the same time delivering an extremely high signal conversion speed (in all-pixel scan mode) of 10.39 frame/s (12 bit).

Furthermore, since processing is performed in parallel for each column, even if the number of pixels or the frame rate increases, A/D conversion can be performed at significantly lower frequencies than with conventional non-parallel circuit structures. Consequently, high picture quality digital signals can be processed without the noise interference that results from high frequency signals.

The "Column-Parallel A/D Conversion Technique" aligns both digital and CDS circuits alongside each column. Column-parallel digital CDS circuits reduce not only pixel noise, but also the noise and inter-column processing variations that can affect analog CDS circuits. These circuits also limit A/D converter fluctuations. With this dual noise cancelling technology realizing high-precision noise reduction across both analog and digital circuits, the "IMX021" image sensor allows signals to be transferred, with limited noise, to the image processing circuits of the camera unit itself. This makes it ideally suited for the development of high image quality digital SLR cameras.

The enhanced quality images generated by "IMX021" are the result of its advanced noise cancelling features based on a unique circuit structure, its pixel array micro-fabrication technologies, and its cleaning and color-filtering capabilities - encapsulating the range of imaging expertise that Sony has accumulated throughout its history of CCD development.

"IMX021" production will be carried out at Sony Semiconductor Kyushu Corporation's Kumamoto Technology Center.

Source: Sony

Explore further: Google searches hold key to future market crashes

add to favorites email to friend print save as pdf

Related Stories

Quadcopter sees the woods and the trees

Jun 30, 2014

Academics at the Stockholm Environment Institute (SEI) at the University of York are capitalising on the opportunities offered by the development of low-cost unmanned aerial vehicles (UAV) to monitor, map ...

Sony inspired by biomimicry develops curved CMOS sensors

Jun 14, 2014

Sony's advance in image sensors appears quite natural: the company has developed a set of curved CMOS image sensors based on the curvature of the eye. A report on the sensors in IEEE Spectrum said that, "in ...

The promise and risks of big data

May 30, 2014

To its proponents, big data offers a big promise: insight into complex—and critically important—questions in health care, science, business and more. But its detractors say it poses big risks for individual ...

Recommended for you

Google searches hold key to future market crashes

6 hours ago

A team of researchers from Warwick Business School and Boston University have developed a method to automatically identify topics that people search for on Google before subsequent stock market falls.

Lenovo's smart glasses prototype has battery at neck

8 hours ago

China's PC giant Lenovo last week offered a peek at its Google Glass-competing smart glass prototype, further details of which are to be announced in October. Lenovo's glasses prototype is not an extreme ...

Amazon launches 3D printing store

11 hours ago

Amazon announced Monday the launch of an online store for 3D printed items to allow consumers to customize and personalize items like earrings, pendants, dolls and other objects.

User comments : 0