https://www.cnx-software.com/2022/02/09/mipi-csi-2-v4-0-adds-features-for-always-on-low-power-machine-vision-applications/ Skip to content CNX Software - Embedded Systems NewsCNX Software - Embedded Systems News CNX Software - Embedded Systems News Reviews, tutorials and the latest news about embedded systems, IoT, open-source hardware, SBC's, microcontrollers, processors, and more Orange Pi Amazon StoreOrange Pi Amazon Store Menu * All News * Raspberry Pi * Arduino * Reviews * Tutorials * Shop * About + About + Contact Us + Advertisement & Consulting Services + Work for Us + Support CNX Software + Privacy Policy Posted on February 9, 2022February 9, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment on MIPI CSI-2 v4.0 adds features for always-on, low power machine vision applications MIPI CSI-2 v4.0 adds features for always-on, low power machine vision applications While MIPI CSI-2 standard was first introduced in 2005 as a high-speed protocol for the transmission of still and video images from image sensors to application processors, the standard has evolved over the years, and the latest MIPI CSI-2 v4.0 introduces features to better support always-on, low power machine vision applications, high-resolution sensors, and high-dynamic-range automotive image sensors. The main changes for v4.0 include support for a two-wire interface ( MIPI I3C) to lower cost and complexity, multi-pixel compression for the latest generation of advanced image sensors, and RAW28 color depth for better image quality and an improved signal-to-noise (SNR) ratio. MIPI CSI-2 AOSCMIPI CSI-2 AOSCMIPI CSI-2 V4.0 AOSC overview MIPI CSI-2 v4.0 highlights: * Always-On Sentinel Conduit (AOSC) - Enables always-on machine vision systems with ultra-low-power image sensors and video signal processors (VSPs) continuously monitoring their surrounding environments and having the ability to wake up their more powerful host CPUs when specific events happen. Some use cases include laptop/tablet-based face monitoring, video surveillance, and vision-based vehicle safety applications. AOSC enables image frames to be streamed efficiently from an image sensor to a VSP over a low-power MIPI I3C bus with options to add extra I3C lanes and bandwidth as defined by the I3C specification. Two transport modes are supported: Optimal (OTM) and Smart (STM) with the latter being optional and enabling further power savings. * Multi-Pixel Compression (MPC) - Provides optimized pixel compression for the latest generation of Tetra- and Nona-Cell image sensors with multi-pixel color filter arrays (CFAs). The MPC feature compresses both multi-pixel and standard Bayer CFA images more efficiently and with potentially higher quality than current methods such as Differential Pulse Code Modulation (DPCM). Reference code is supposed to be available to help integrators evaluate the algorithm and verify their implementations, but I suppose it's only available to MIPI Alliance members. * RAW28 pixel encoding - Supports the next generation of high-dynamic-range automotive image sensors for applications such as those required for ADAS and other safety-critical applications. MIPI CSI 2 V4.0 MPC vs DPCMMIPI CSI 2 V4.0 MPC vs DPCMMPC vs DPCM - Higher quality and higher compression ratio on test images MIPI CSI-2 v4.0 standard remains backward compatible with all previous versions of the MIPI specification. You'll find more details in the presentation for the "MIPI CSI-2 v4.0 Panel Discussion with the MIPI Camera Working Group". It's highly technical with incomprehensible jargon that will probably be only fully understood by those who have previously worked on MIPI CSI implementations. MIPI Alliance members can also access the full MIPI CSI-2 v4.0 specification on MIPI website. Thanks to TLS for the tip. jean-luc aufranc cnxsoftjean-luc aufranc cnxsoft Jean-Luc Aufranc (CNXSoft) Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011. Share this: Support CNX Software! Donate via PayPal or cryptocurrencies, become a Patron on Patreon, or buy review samples Tagsautomotive, camera, i3c, low power, mipi, standard Related posts: 1. What is GENIVI ? A Software Standard for the Automotive Industry 2. ARM TechCon 2014 Schedule - 64-Bit, IoT, Optimization & Debugging, Security and More 3. e-con Systems 13MP MIPI CSI-2 Camera Designed for Nvidia Jetson TK1 Board 4. MIPI I3C Sensor Interface is a Faster, Better, Backward Compatible Update to I2C Protocol 5. Dride is a Voice Controlled Dashcam Driving Assistant Powered by a Raspberry Pi Board (Crowdfunding) Connect with: FacebookFacebook GoogleGoogle TwitterTwitter Subscribe Login Notify of [new follow-up comments ] [ ] [>] guestguest Label [ ] {} [+] [ ] [ ] Name* [ ] Email* [ ] Website [ ] I agree to the Privacy Policy The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment. [ ] [Post Comment] guestguest Label [ ] {} [+] [ ] [ ] Name* [ ] Email* [ ] Website [ ] I agree to the Privacy Policy The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment. [ ] [Post Comment] 1 Comment oldest newest Marcin DabrowskiMarcin Dabrowski Marcin Dabrowski 1 minute ago I believe that I3C can displace I2C and SPI in a very wide range of applications, even though this division through opening only a subset of this "standard" looks like a shot to a foot, and that is one such application. 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