Sony has won the high-definition format war by backing the Blu-ray standard. Toshiba ran up the white flag over their rival HD DVD format, and things seemed settled. Not so fast. Professor Emerita Gertrude Neumark Rothschild of Columbia University told the US International Trade Commission that she believes she holds not only the patent on the Blu-ray laser, but a host of short-wavelength LED designs as well. She’s filed a complaint against Sony and 30 or so companies for all sorts of devices that use the technologies.