By the time a vehicle has come to market, much of the technology, especially electronic components and display modules, are several years old. As the time arises for model refresh, ideally you would want to make small cosmetic changes without replacing the core electronic controllers and systems. Displays and cameras are components that often go end-of-life during the lifetime of a vehicle model, driven as they are by the whims and fancies of the consumer electronics industry. Here it would help if new devices could be easily integrated into existing systems with minimal effort.
The powerful application processors that run these systems also have limited numbers and combinations of suitable video interfaces. Cameras may feature a parallel output, but the application processor may only have a CSI-2 interface available. When also considering the cable run between the video source at the rear of the vehicle to a centrally located control unit, this requires a conversion solution to link the two together. One possible approach uses a serializer/deserializer for the video output from the camera, and then a bridging solution, such as Toshiba’s TC9591XBG, to convert it to CSI-2 for the application processor. Such bridging devices can also be reconfigured in software to accommodate replacement camera solutions with little effort.
Increasingly we want to enjoy our own entertainment on our journey, turning to our smartphone screens to do so. However, in-vehicle entertainment has the ability to offer a significantly better video quality with low glare on larger screens using the smartphone as a video source. Since the introduction of USB Type-C and the HMDI Alt Mode, smartphones are capable of providing a video feed that can be fed into the vehicles Infotainment system. Here again a Toshiba video bridge, such as the TC9590XBG, provides the necessary link between HDMI and CSI-2.
The final stage in the chain is the output to a display. Again, application processors are limited in the range and quantity of video outputs. Toshiba’s TC9592XBG and TC9593XBG simplify the connectivity between application processor and display doing a DSI to LVDS conversion, while also providing simple control of I2C devices integrated into the display panel.
All of these products are also supported with a range of development boards that support automotive engineers in the evaluation of these hardware solutions, along with development software.
Should you be searching for video-bridging solutions for an automotive application, you can review our white paper on the topic available here