Seiki today announced the availability of their U-VISION line of 4K up-conversion HDMI accessories which can upscales content to 4K. The product is available as a standalone HDMI cable or HDMI up-conversion adapter without cables.
The upscaling is performed by a Marseille Networks VTV-1222 video processing chip. This chip makes it possible upscale 1080p content up to 4K and it can upscale 720p content to 1080p.
Besides that, Seiki lists features as, "adaptive edge enhancement of lines and curves for improved video and user interfaces, adaptive sharpening and noise reduction to refine video content, low-latency processing for HD video gaming and brightness, contrast, saturation improvement."
The U-VISION line was announced during CES 2014 and is now available with a MSRP of $39.99.