e.Digital filed suit against Diasonic Technology and Sec Tech Enterprises, alleging that the defendants’ digital voice recorders and audio players infringe four patents related to a handheld record and playback device with flash memory, recording voice messages on flash memory, a flash memory file system, and editing in a handheld recorder.  e.Digital has filed two prior suits since March 2008 against over 10 companies including Canon, Casio, Coby, LG, Nikon, Olympus, Samsung, and Sanyo.  The patents-in-suit originated with Comp General Corporation, which changed its name to Norris Communications, and assigned the patents to e.Digital in March 1995.  10/19, Southern District of California, assigned to Judge Cathy Ann Bencivengo and referred to Magistrate Judge William V. Gallo, 3:2012cv02543.