Japanese high-tech giants Canon Inc and Toshiba Corp said that they have decided to postpone indefinitely the launch of a new type of flat television panel which is mired in legal wrangling.SED television sets were due to be introduced in Japan in the fourth quarter of 2007. No new launch date was given. "Reasons for the postponement include prolonged litigation currently underway in the United States and efforts to establish mass-production technology aimed at realising further cost reductions," a Canon statement said. The delay forced Toshiba...