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ULTRA HD FOR CARS The new generation of graphic display controllers
Driven by the development of consumer displays and customer expectations, the trend towards ever-higher resolution displays for automotive applications continues unabated. At the same time, it is necessary to operate multiple high-resolution displays from one device by consolidating control units. This increases not only the requirement for a highly integrated HMI computer, but also poses new challenges for networked displays. For the first time, the new SC1701 Remote Display Controller series by Socionext provides in-vehicle solutions with 4k displays, HDR support and image/data communication of up to 12Gbit/s. Here’s more on this latest technological innovation
Like both of its predecessors, the new
graphics display controller uses a robust high-speed video link to ensure the display of content on one or multiple displays with different resolutions up to 4K (ultra HD). In order to be able to guarantee the necessary high transmission rates, Socionext uses the new APIX3 interface from Inova Semiconductor as a video link. With a bandwidth of up to 12Gbit/s for uncompressed video and control data, this video link meets the requirements. Alternatively, the data rate can be increased up to 28Gbit/s with the help of the VESA DSC compression method. In addition to the APIX3 video high speed link, a 187.5 Mbit/s sideband link is available for control data. The side band link is very important for the system as it allows full-duplex data transmission. An Ethernet MII (media independent
T
he human machine interface is one of the most important aspects of
electronics systems and device design and is helping reshape the way we interact with technology. We see this in particular with automotive HMI now really coming to the fore. This includes advancements in areas such as new interfaces for automotive navigation, design of the middle control instrument system, latest HUD technologies and many more. Some of the leading areas of development in automotive are digital instrument clusters, head-up displays, infotainment systems (IVI), rear seat entertainment amongst others. As a semi-conductor manufacturer,
12 JUNE 2018 | ELECTRONICS
products by Socionext Europe have been leading technological developments for graphical display systems in vehicles for many years. The new SC1701 series is now the 3rd generation of graphic display controllers to establish themselves as optimised components in automotive applications. The interior of vehicles today is dominated by an increasing number of ever-higher resolution displays. A wide variety of display sizes and resolutions are used and great emphasis is placed on graphically appealing displays and user-friendly operation. The HMI computer handles centralised control of the transfer of the graphic content.
interface) protocol integrated in the APIX link also fulfils requirements for the connection of brightness and temperature sensors or touch-controller data. For example, touch controller data is read in by the display controller via I2
C
and then transmitted for evaluation to the application processor as an Ethernet stack via the sideband link, at a rate of up to 100Mbit/s. The sideband link is therefore the direct connection between the display, supporting components such as sensors, touch or proximity controllers, and the controlling processor. By using different display formats, such as LVDS (Low Voltage Differential Signalling), mini-LVDS or RSDS (Reduced Swing Differential Signalling) a differential data transmission ensures a
/ ELECTRONICS
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