Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image CodecDetailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Hardware Module Support

The T527 integrates multiple hardware modules related to graphics display and codec, providing a robust hardware foundation for high-definition image display, high-definition video playback, and multiple high-definition camera inputs:

  • ARM Mail-G57 GPU

  • Self-developed Display Engine

  • De-interlacing Unit

  • 2D Graphics Acceleration Unit

  • Video Codec Engine

  • Self-developed Image Signal Processor (ISP)

  • Visual Image Processing Unit (VIPP)

  • ……

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

With the support of hardware acceleration modules, the T527 can easily achieve 4K video recording and playback, supporting various mainstream codec formats such as H.264, H.265, and VP9, while also accommodating multi-stream codec scenarios.

Video decoder- H.265 MP decoder up to 4K@60fps- H.264 BL/MP/HP decoder up to 4K@30fps- VP9 decoder up to 4K@60fps- Multi-format 1080p@60fps video playback,including VP8,MPEG1/2SP/MP,MPEG4,SP/ASP,AVS+/AVS video encoder- H.264 encoder up to 4K@25fps- MJPEG encoder up to 4K@15fps- JPEG encoder up to 8K x 8K resolution

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Rich Image Input and Output Interfaces

The T527 integrates a large number of image input and output interfaces, which, in conjunction with the codec modules, can achieve dual-screen display of 4K + 1080P and interleaved input of up to 6 camera images, providing efficient solutions for scenarios requiring multi-screen interaction or multi-camera output, such as cash registers, smart cockpits, and 360° cameras.

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Screen Interfaces:

  • MIPI DSI

  • LVDS

  • HDMI

  • eDP

  • RGB

  • …….

- HDMI2.0b up to 4K@60fps- 4+4-lane MIPI-DSI output,supporting up to 2.5K@60fps and 4K@45fps - 2xLVDS interface with dual link, up to 1080p@60fps - 2xRGB interfaces with DE/SYNC mode, up to 1080p@60fps - eDP1.3 up to 2.5K@60fps and 4K@30fps

Camera Interfaces:

  • MIPI CSI

  • Parallel CSI

  • ……

video InputParallel CSI interface - 8/10/12/16-bit width- Supports BT.656 up to 4*720P@30fps and BT.1120 up to 4*1080P@30fps MIPI CSI interface - 2*4lane/4*2lane/4+2*2lane MIPI CSI,flexible combination,up to 2.0 Gbit/s per lane in HS transmission,compliant with MIPI-CSI2V1.1 and MIPI DPHYV1.1- Maximum video capture resolution of 8M@30fps

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Self-developed High-Definition Image Quality Algorithm Matrix

Allwinner has hardware-embedded its self-developed high-definition image quality algorithm matrix AWonder1.0 on the display engine, providing multi-dimensional image processing algorithms, including:

  • Intelligent Noise Reduction

  • Bright Dynamics

  • Clear Details

  • Vibrant Colors

  • Sharp De-interlacing

  • Premium HDR

  • AI-PQ

  • ……

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

This helps reduce noise, enhance contrast, minimize aliasing, and enrich colors, while also utilizing AI scene and portrait recognition to make images clearer and colors more natural.

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Self-developed Security-grade Professional Image Signal Processor

The T527 integrates Allwinner’s self-developed security-grade professional image signal processor (ISP), which has significantly upgraded multiple modules from previous versions, better handling complex scenes such as driving and outdoor environments.

  • Spatio-temporal Multi-level Noise Reduction

  • Wide Dynamic Range Synthesis

  • Local Tone Mapping Algorithm

  • ……

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Additionally, Allwinner has launched the AI-ISP intelligent image processing algorithm “Allwinner Smart Vision”, which, through deep collaboration between the ISP and NPU, enhances image sensitivity, helping to achieve full-color performance in low-light conditions, ensuring all-weather blind-spot-free driving safety monitoring.

Compared to traditional ISP algorithms, “Allwinner Smart Vision” AI-ISP can better enhance clarity and color performance in dark areas, improve overall brightness and chromatic noise performance, and significantly suppress motion blur.

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

Self-developed Image and Visual Parameter Adjustment Tools

The T527 is equipped with Allwinner’s self-developed mass production tools

  • Screen Quality Debugging Tool: TigerLCD

  • Visual Image Debugging Tool: TigerISP

These visual software tools assist engineers in conveniently debugging image parameters, reducing workload, improving development efficiency, and ensuring more accurate color display.

Detailed Analysis of the Allwinner T527 Chip【II】: High-Definition Image Codec

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