An Apple patent focused blog has revealed possible plans that could turn Apple's best selling iPod into an iPhone, with the ability to make calls.

Patently Apple highlights a patent application for an 'accessory transceiver' that could allow a mobile device, such as the iPod touch, access to a mobile telephone network.

"According to Apple's patent, the accessory transceiver could be connected with the mobile device with either a physical connection or a wireless connection," Patently Apple suggests.

"In some embodiments, the mobile device could also include an internal wireless transceiver that could provide access to a different mobile telephone network. Thus, using the accessory transceiver could allow the mobile device to access two separate mobile telephone networks."

"Accessory transceiver 213 could be any device capable of communicating with a wireless network. The accessory transceiver could be configured with circuitry to communicate with a mobile phone network, a WiFi network, a WiMax network, a satellite network, etc."

Patently Apple adds that of the 27 Apple patent applications published by the US Patent and Trademark Office, 10 cover similar accessory functionality.

Apple credits Paul Holden, Robert Borchers, Jesse Dorogusker, Emily Schubert and Stephen Chick as the inventors of patent application 20100234051, which was originally filed in Q1 2010.

Apple unveiled the most iPhone like iPod touch earlier this month, complete with many of the features found on the latest iPhone 4, including FaceTime, Retina Display and A4 processor.

Apple iPod touch

[via Patently Apple]