Camera Image Sensor with Anti Shake Feature - MT9T111 - Micron

Micron announced the development of an integrated anti-shake feature in its 3-megapixel CMOS Camera Image Sensor chip. This feature will greatly reduces image blurring that often found in camera phone pictures due to the camera shake when user takes a shoot. Image blurring getting worst when the shooting is taken in low-light environment. In this case, the shutter is open for longer time to collect enough light to take the picture. While the shutter is open, any small user hand movement will create blur of the captured image.

Micron's new image sensor (PN: MT9T111) can reduce image blur by automatically activating the anti-shake mechanism when sensing any shake. The result of anti shake feature is shown in two pictures below (source: Micron’s product flyer).

Micron’s Anti Shake Camera Image Sensor In Action

Micron’s MT9T111 anti shake minimizes the effects of an unsteady user’s hand or an attempt to take a picture of someone in motion by Micron’s motion adaptive feature technology.

Bob Gove, Micron’s imaging group, said:

With the camera phone market’s move toward DSC quality pictures and features, our new 3-megapixel product is positioned to provide the ability to produce clean, sharp images under a wide range of conditions…

Micron's portfolio of CMOS camera image sensors are used in a variety of applications that span the mobile, consumer, medical, automotive, commercial, industrial and high-speed markets.

Key Features of Micron MT9T111 Camera Image Sensor:

• 1.75μm pixel technology
• Motion-adaptive exposure mode
• 3.1-megapixel resolution
• 1/4-inch optical format (4:3)
• Dual-camera bridging support with MT9V013
• 2048H x 1536V array format
• One-time programmable (OTP) memory
• 15 frames per second (fps), full resolution
• Integrated real-time JPEG encoder
• Flexible support for external auto focus, optical zoom, and mechanical shutter
• Programmable I/O slew rate
• On-chip, 10-bit analog-to-digital converter (ADC)
• On-chip phase lock loop (PLL)
• Two-wire serial interface providing access to
• 10-bit parallel, MIPI serial interface
• registers and microcontroller memory
• Low-power, low-cost, progressive-scan CMOS image sensor
• Micron® DigitalClarity® CMOS imaging technology

MT9T111’s integrated real-time JPEG encoder is a solution that provides for low-power consumption and full programmability of JPEG compression parameters for image quality control. The chip also has an image flow processor that performs image correcting and enhancing. The image sensor can be programmed to output up to 30 fps in preview and 15 fps in QXGA (full resolution)  mode. The image data can be output in any one of six 8-bit formats.

Micron Camera Image Sensor Block Diagram

Key Specification of Micron MT9T111 Camera Image Sensor:

• Array Format (Active): 2048H x 1536V (QXGA)
• Pixel Size: 1.75μm x 1.75μm
• Imaging Area: 3.62mm x 2.73mm: 4.52mm diagonal (4:3 aspect ratio)
• Color Filter Array: RGB Bayer color filters
• Targeted Module Size (estimated): 8.5mm x 8.5mm x 5mm
• CRA (tentative targets): 24.99° (Max at 80% image height)
• Optical Format: 1/4 inch (4:3)
• Frame Rates: 15 fps (full resolution) (JPEG), 30 fps (preview mode)
• Shutter: Electronic rolling shutter (ERS)
• Scan Mode: Progressive
• Automatic Functions: Exposure, white balance, black level offset correction, flickerdetection and avoidance, color saturation control, defect identification and correction, and aperture correction
• ADC: 10-bit, on-chip
• Windowing: Programmable to any size
• Output Interface MIPI: Single-lane
• Parallel: 10-bit
• Maximum Data Rate: 96 MHz
• Maximum Pixel Data Output: 48 megapixels per second
• Dynamic Range: >67.4dB (preliminary)
• Signal-to-Noise Ratio: >38dB (preliminary)
• Responsivity: 0.44 V/Lux-sec (preliminary)
• Power Consumption: <150mW (@ 30 fps)
• Supply Voltage:
  • Analog: 2.5V–3.1V
  • Digital: 1.70V–1.95V
  • I/O: 1.7V–3.1V
  • PLL: 2.5V–3.1V
  • MIPI: 1.70V–1.95V
• Operating Temp: -30°C to +70°C (at junction)
• Package: Bare die (in wafer form)

Micron’s MT9T111 Camera Image Sensor with Anti-Shake is scheduled for sampling and production in the end of this year.

Source: Camera Image Sensor with Anti-Shake - Micron