Los Angeles - Gemstar-TV Guide International (NASD: GMST), a provider of electronic program guides for digital TV services, said on Wednesday that it has signed a multi-year license agreement with Sony USA (NYSE: SNE), which may integrate its program guides into TV products in the U.S. Earlier this week, Gemstar announced a similar license agreement with Polaroid Labs, for the company's line of digital televisions and digital video recorders.