BBC talks about the similarity of Kodak Truesense W-RGB filter and Sony "RGBW Coding". BBC says:
"When Kodak patented the idea it noted that the technology would be suitable in situations involving "short exposure time, small aperture, or other restriction on light reaching the sensor". It specifically mentioned "non-camera devices such as mobile phones and automotive vehicles" as two examples."
And then: "Neither Sony nor Kodak responded to requests for more detail about the patents involved".