References - Overview

d.stream engineering specializes in the development of sophisticated embedded systems with digital signal processing.
As a technology and development partner, we support projects from the initial idea, through architecture and implementation, to series production readiness.

Our services include software and hardware development and cover the following areas, among others:

• Embedded software development on DSP and SoC platforms
• Hardware development and hardware-related system development
• Driver, BSP, and operating system integration (RTOS, Embedded Linux)
• Architecture, optimization, and integration of complex embedded systems
• Support from pre-development to series production

Through this holistic approach, we support our customers in realizing high-performance, robust, and production-ready products.

A Camera Mirror System (CMS) is a digital rear-view mirror system in which conventional mirrors are replaced by external cameras and internal displays.
The camera image is processed in real time and displayed to the driver on displays in the vehicle.

This results in several advantages for the driver:

• Improved dynamic range (HDR)
  Significantly better visibility in extreme differences in brightness, e.g., in direct sunlight and strong shadows.
• No glare
  No direct glare from the sun or headlights of vehicles behind.
• Optimized visibility in poor weather conditions
  Better visibility in rain or dirt due to recessed camera positions and heated lenses.
• Improved night vision
  Use of light-sensitive camera sensors for better visibility in the dark.
• Better aerodynamics
  Reduced air resistance leads to lower fuel consumption or a longer range for electric vehicles.
• Increased safety
  Possibility of object recognition, driver warning, and assistance functions based on the camera data.

d.stream was involved in the development of CMS solutions for trucks, premium electric vehicles, and super sports cars.
A total of five CMS series developments were supported from pre-development to Start of Production (SOP).

d.stream brings comprehensive experience from the development of several Camera Mirror series products, from pre-development to Start of Production (SOP).
This experience makes it possible to identify technical risks early on and significantly shorten development times.

The concrete added value for our customers lies in the following areas, among others:

• Series experience in CMS projects
  Development of five CMS series products across all project phases – from the concept phase to series production readiness.
• Proven collaboration with Tier-1 structures
  Many years of project experience of d.stream engineers in integrated teams of leading Tier-1 suppliers.
• Hardware-related system competence
  In-depth expert knowledge of SoCs from Texas Instruments (TDA2+, TDA3, TDA4), including firmware, bootloader, and multicore-IPC.
• End-to-end video pipeline
  Responsibility for the complete pipeline – from the camera sensor via GMSL / FPD-Link, ISP, and image processing to display control.
• Operating systems & Performance
  High-performance implementations on RTOS and Embedded Linux, tailored to automotive requirements.
• Risk minimization and development acceleration
  Use of field-proven architectures and concepts that reduce development risks and accelerate the path from pre-development to series production.

In automotive projects, d.stream aligns its development processes with established industry standards to ensure quality, traceability, and functional safety.

These include:

• Automotive SPICE (ASPICE)
  Structured development processes, clear responsibilities, and traceable artifacts throughout the entire project.
• MISRA C / MISRA C++
  Rule-compliant, robust, and maintainable software development for safety-related embedded systems.
• ISO 26262 (functional safety)
  Consideration of safety-related requirements, including ASIL classification (e.g., ASIL-B), already at the architecture and system level.

These standards form the basis for production-ready automotive software that can be reliably, maintainably, and safely integrated into complex vehicle architectures.

d.stream has been developing embedded products on processor platforms from Texas Instruments for over 25 years.
The focus is on high-performance DSP and SoC architectures, including the DSP families C55x, C64x, C66x, and C67x, as well as multicore SoCs such as TDA2p, TDA3, and TDA4 for complex vision and signal processing applications.

d.stream is also a registered member of the TI Partner Program.

The following products, among others, have been developed on the basis of these platforms:

• Smart camera systems
• Multi-room audio systems
• Camera Mirror Systems (CMS)
• Stereo cameras for ADAS applications
• Radar-based speed measurement systems

d.stream works on TI platforms down to the hardware and board support level, integrating software, drivers, and system architecture into production-ready overall solutions. RTOS and Embedded Linux are used as operating systems.

Typical focus areas in customer projects include:

• Peripheral and sensor drivers
• Processor and system configuration
• Secure bootloaders and firmware update mechanisms
• CSI-2 video capture drivers
• Lens Distortion Correction (LDC)
• Inter-Process Communication (IPC)
• CAN communication
• GPU-based graphical overlays

d.stream has implemented numerous projects for optimizing computationally intensive algorithms in embedded systems.
One example is the runtime optimization of a tracking algorithm on a TI DSP (C6424).

Through targeted hardware-related code and architecture optimizations, the execution time of the algorithm was reduced by around 80%.
As a result, a planned new hardware generation became superfluous, which saved the customer considerable development costs.