According to Patrick at NPB Tracker, the Giants have signed reliever Shingo Takatsu to a minor league contract. He tried out for the team in May, and will report to Triple-A Fresno once his visa paperwork clears.
Takatsu last pitched in the majors for the Mets in 2005. He finished second in the 2004 AL Rookie of the Year voting with the White Sox thanks to a 2.31 ERA and 19 saves.