Apple is ramping up its options for future product development, with yet another filing raising speculation of new goodies ahead for the Mac world.

MacNN notes that Apple has filed a patent application that suggests new adventures in satellite radio.

The patent was published on 19 October, though filed in August.

It refers to two ways to integrate an iPod with satellite services, describing a tuning element and positing a range of accessories to add such features.

The filing also refers to "in-vehicle receiver-players" that could synchronise track data, the report explains.

The technology also describes ways to mark songs heard on the radio for later purchase through iTunes.