SPDIF to USB converter???

Does anyone know of the existence of a digital signal adapter/converter from SPDIF (IN), preferably coax, toslink if need be, to USB (OUT)? Since I haven't found anything, I wonder if that is at all possible or would the signal have to go through multiple conversions to achieve this?

Thanks in advance and sorry if the question has been discussed before, I couldn't find it in the archives