LAS VEGAS (AP) - O.J. Simpson is appealing to the Nevada Supreme Court to overturn his conviction on Las Vegas armed robbery and kidnapping charges.

A court clerk says his appeal was filed Tuesday in Carson City.

The appeal alleges Simpson's conviction in a hotel room confrontation with two sports memorabilia dealers was tainted by judicial misconduct, a lack of racial diversity on the jury and errors in sentencing and jury instructions.

The document criticizes Clark County District Court Judge Jackie Glass and accuses prosecutors of improperly questioning witnesses about allegations of intimidation.

It could take a year or more for justices to issue a ruling.

The former football star was convicted last October and is serving nine to 33 years in state prison.

Copyright 2009 The Associated Press.