描述 Description

OmniVision's OV8858 is a 1/4-inch 8-megapixel PureCel? image sensor for the rapidly growing mainstream smartphone and tablet market. The compact and cost-effective OV8858 sensor delivers dramatically reduced power consumption and best-in-class performance, making it a highly competitive solution for the next-generation of mobile devices.

Compared to OmniVision's previous-generation 1/4-inch 8-megapixel sensor, the OV8858 delivers a number of performance enhancements, including dramatically improved full-well capacity (FWC) and sensitivity for enhanced high- and low-light performance. It also offers a significant reduction in power consumption and form factor.

The sensor also features OmniVision's Video-in-Video (ViV?) technology, which stitches together images from the front- and rear-cameras, applies enhancements such as independent lens correction and color compensation, and sends the combined image to the host ISP. In ViV mode, users can capture a portrait scene perfectly alongside their own face, record video while narrating for high quality video blogging, or utilize the feature for video conferencing. This is made possible by a special input MIPI receiver on the OV8858 that can accept image data from a wide range of OmniVision image sensors designed for front-facing applications of 2-megapixel and below, thus saving a camera port on the host ISP.

The OV8858 supports an active array of 3264 x 2448 pixels (8-megapixel) operating at 30 frames per second (fps) for zero shutter lag, enabling high-speed photography. The sensor is capable of recording 1080p high definition (HD) video at 60 fps, or 720p HD video at 90 fps, each with additional pixels for electronic image stabilization (EIS). The OV8858, when paired with OmniVision's latest 2-megapixel sensors, can provide full resolution ViV snapshot images at 15 fps and preview ViV video at 30 fps.

The OV8858 fits into an 8.5 x 8.5 mm camera module with a build height of approximately 4 mm.

特性 Features

? 1.12 μm x 1.12 μm pixel
? Optical size of 1/4\"
? 32.9° CRA for ~4 mm Z-height
? Programmable controls for:
- Frame rate
- Mirror and flip
- Cropping
- Windowing
? Supports images sizes:
- 8MP (4:3 - 3264x2448)
- 8MP (16:9 - 3264x1836)
- EIS 1080p (2112x1188)
- 1080p (1920x1080)
- EIS 720p (1408x792), and more
? 8MP at 30 fps (720 Mbps/4-lane or 10-8 DPCM 1.104 Gbps/2-lane)
? Two on-chip phase lock loops (PLLs)
? Two-wire serial bus control (SCCB)
? Built-in temperature sensor
? Frame exposure mode for still image (with mechanical shutter)
? 4k bits of embedded one-time programmable (OTP) memory for customer use
? Supports Video-in-Video (ViV?) mode using an on-chip 1-lane MIPI receiver and a secondary sensor
? Special ViV features include:
- ViV video at up to 30 fps
- ViV snapshot at up to 15 fps
- Arbitrary positions and shapes for ViV window
- Separate AWB compensation for secondary sensor, and more
? Image quality control:
- Defect pixel correction
- Automatic black level calibration
- Lens shading correction
- Alternate row HDR
? Suitable for module size of 8.5 x 8.5 x ~4 mm