Traditional machine vision systems rely on matching the data rate of image sensors with frame grabbers or PCs. However, common image data rates are projected to exceed 10Gbit/s and approach 30Gbit/s in the coming years. This surge necessitates high-performance interface solutions to fully exploit the capabilities of modern CMOS sensors.

Emerging standards like CoaXPress address these speeds but require expensive frame grabbers and compatible PCs.

The Buffered Image Pipeline: A Breakthrough Solution

Our buffered image pipeline technology decouples the sensor’s data stream from the camera interface’s output using an embedded real-time buffer (see Figure 1). This approach enables high-speed imaging with low-data-rate interfaces, offering significant advantages for vision equipment.

Figure 1: The image buffer receives data at high speed from the sensor while outputting it at a lower rate to the camera interface.

Key Advantages of the Buffered Pipeline Architecture

1. Cost-Effective High Throughput

By offloading interface requirements, this architecture allows for cost-optimized systems without compromising imaging performance. Users can leverage high-speed acquisition (e.g., 1Gpixel/s at 10-bit/pixel) while using affordable low-data-rate interfaces like GigE Vision or Camera Link Base.

2. Enhanced Accuracy at Speeds and Resolutions

The buffered pipeline compensates for shot noise by combining multiple images acquired at high speed, effectively reducing the need for high-performance sensors alone. This results in improved signal-to-noise ratios without sacrificing speed (see comparison table).

Maintaining Image Integrity

High-speed Camera Link configurations often face bit depth limitations (max 8-bit/pixel). The buffered pipeline overcomes this by utilizing lower-resolution interfaces like Camera Link Base or Medium instead of the higher-capacity but more expensive Camera Link Full.

Comparison Table: Buffered Pipeline CMOS vs. Direct Pipeline Options

Feature Buffered Pipeline CMOS Direct Pipeline CMOS Direct Pipeline CCD
Acquisition Speed 180fps 180fps 30fps
Link Speed 30fps 180fps 30fps
Infrastructure Cost Savings (vs. Camera Link Deca) Up to $1500 – Up to $1500

Relevance for Vision Systems

Cameras with buffered imaging pipelines provide OEM manufacturers additional benefits beyond traditional designs:

  • Faster development cycles at lower costs
  • Integration of advanced CMOS technology without redesigning existing interfaces
  • Optimized performance in inspection and metrology systems
  • Flexibility to switch between high-speed and high-accuracy modes using a single camera

For more details on this technology, please contact us or refer to the full article.

Last Updated: 2025-09-04 19:11:20