Semiconductor solutions supplier Renesas Electronics Corporation has launched the latest device in its Automotive HD Link (AHL) portfolio, the RAA279974 4-channel AHL video decoder, which enables automotive manufacturers to deliver high-definition video over low-cost cables. The solution processes four input sources simultaneously, making it “an economical solution for surround-view and multi-camera applications”.
AHL technology uses a modulated analog signal to transmit video, meaning the frequency is 10 times lower than digital transmission solutions (~37MHz vs. >3GHz). Renesas states this enables longer transmission distances (20-30m) with unshielded twisted pair cables and standard connectors. Existing standard-definition analog video cables and connectors can also be employed. Using unshielded twisted pair cables, Renesas says, offers lighter weight for improved energy efficiency and performance.
Due to the nature of an analog signal, an AHL video transmission can withstand noise and interference whereas with a digital link any interference will result in a complete loss of picture.
Other solutions in the AHL portfolio are the RAA279971 single channel AHL video encoder and the RAA279972 single channel AHL video decoder. Adding the RAA279974 enables the implementation of multiple cameras in vehicles for applications such as surround view parking assistance monitors. AHL solutions can be paired with R-Car Automotive SoCs, RH850 MCUs, automotive PMICs and analog components, to implement safety features in vehicles.
“Multi-camera safety systems are quickly becoming a must-have feature for many consumers,” said Davin Lee, vice president of the Analog & Connectivity Product Group. “The AHL system enables our automotive customers to now deliver these features in all new vehicles, including economy models.”