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Optoelectronics/Displays??

5Mpixel sensor brings 1080p HD video to handsets

Posted: 09 Jun 2010 ?? ?Print Version ?Bookmark and Share

Keywords:image sensor? HD video? 5Mpixel sensor? mobile handset?

OV5640 image sensor

From OmniVision Technologies Inc. comes a complete 5Mpixel SoC camera solution aimed at penetrating the high-volume autofocus (AF) camera phone market. Built on OmniVision's 1.4?m OmniBSI backside illumination (BSI) technology, the new OV5640 is optimized to offer a cost-effective, complete camera solution with excellent pixel performance for 5Mpixel photography and 720p or 1080p high-definition (HD) video in camera phones.

Because the OV5640 is a single-chip SOC solution, it is easier to tune than two-chip solutions (RAW + external ISP), making it invaluable to customers in terms of cost, time-to-revenue and ease of platform integration. The sensor's embedded AF control with voice coil motor driver offers further cost savings to the end customer, making the OV5640 a highly attractive alternative to other 5Mpixel sensors currently on the market.

"Industry analysts predict that one-third of mobile phones will employ cameras with 5Mpixel resolution by 2012. Consequently, there is an increasing need for performance worthy of a 5Mpixel camera at cost levels that meet the requirements of the mainstream market," explained Vinoo Margasahayam, product marketing manager for OmniVision. "The OV5640 SoC sensor offers handset manufacturers a fully-featured yet extremely cost-effective solution for bringing excellent quality image capture and HD video to the mainstream handset market. Moreover, our OmniBSI technology differentiates itself from competing products by enabling best-in-class low-light sensitivity as well as an ultracompact camera module that is 8.5mm x 8.5mm with a z-height of less than 5mm, a form factor which is required for today's ultrathin handsets."

The OV5640 enables 720p HD video at 60fps and 1080p HD video at 30fps with complete user control over formatting and output data transfer. The 720p/60 HD video is captured in full field of view with 2 x 2 binning, which doubles the sensitivity and improves the SNR. Additionally, a unique post-binning re-sampling filter function removes zigzag artifacts around slant edges and minimizes spatial artifacts to deliver even sharper, crisper color images. To further improve camera performance and user experience, the OV5640 features an internal anti-shake engine for image stabilization.

The OV5640 offers a digital video port (DVP) parallel interface and a high-speed dual lane MIPI interface, supporting multiple output formats. An integrated JPEG compression engine simplifies data transfer for bandwidth-limited interfaces. The sensor's automatic image control functions include automatic exposure control (AEC), automatic white balance, automatic band filter, 50/60Hz automatic luminance detection, and automatic black level calibration. The OV5640 delivers programmable controls for frame rate, AEC/AGC 16-zone size/position/weight control, mirror and flip, cropping, windowing, and panning. It also offers color saturation, hue, gamma, sharpness (edge enhancement), lens correction, defective pixel canceling, and noise canceling to improve image quality.

The OV5640 is available in CSP, RW and COB packaging options and is sampling now. It is expected to enter mass production in 2H.





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