In yet another patent-infringement case, a Scottish patent licenser Picsel Technologies recently filed a lawsuit against the Cupertino-based Apple, claiming that the iDevice-maker has infringed on its US patent 7,009,626 - "Systems and Methods for Generating Visual Representations of Graphical Data and Digital Document Processing."

The lawsuit, filed in Delaware District Court on Friday, has the Scottish IP firm Picsel alleging that Apple has been illegally using its patented technology - approved by USPTO on March 7, 2006 - for the redrawing of displays. The technology uses an "approximate, intermediary rendering" of the displays, during the course of a device's screen shifts like scrolling or zooming.

Though the documents filed do not spell out how the iPhone and iPod touch actually infringe the patent, the mention of the technology dividing the screen into a number of sections for generating the approximation does hint at the iPhone.

With more elaborated details expected come up once the legal proceedings begin, Picsel's complaint, at the outset, seeks a prevention of use of the allegedly infringing products by Apple, and a host of unspecified damages.

Apple may either decide to go in for a settlement with Picsel or else proceed with the legal process. Paradoxically, the contention over the "display" part of "multi-touch display" comes after Apple has lately been granted a multi-touch patent! (Rupinder contributed to this report)