“At that point in our history the Supreme court was trying to figure out how to deal with pornography,” he told CNN.

“Suddenly 16 millimeter film was available and it wasn’t long before beta and VHS became available and you could move these movies directly into the homes. So you see a very budding industry there (in the ’70s) that was no longer something that was in the seedy back room of some adult bookstore.”

Porter also sees Lovelace as a historic figure.

“She did launch a billion dollar industry and she is the queen of it all – a very unlikely queen, but history sometimes selects unusual people to put on thrones."