The latest patent infringement lawsuit sees Dell and storage giants Hitachi GST and Western Digital as being guilty of violating patents for data storage drives. In a case filed in a Texas court, the N.Y.-based company Convolve is accusing Dell, Hitachi and WD of infringing on patents 4,916,635 and 6,314,473. The 4,916,635 patent, entitled "Shaping command inputs to minimize unwanted dynamics," was filed on September 12, 1988 by Neil Singer, a principal at Convolve, whilst the second one entitled "System for removing selected unwanted frequencies in accordance with altered settings in a user interface of a data storage device," was filed on March 4, 1999, and eventually assigned again to Convolve. Both patents are related to controlling the seek time and acoustic noise levels of storage devices. In particularly, the lawsuit asserts that Dell's Dimension 2400, Dimension C521 and Optiplex 740 models infringe its patent. In addition, Hitachi HDS722580VLAT20 Deskstar hard disk drive and Hitachi L020 and Hitachi L030 storage products as well as Western Digital's WD 400BB, WD800 JB, WD 1600, WD 2000 and other hard drive models also violate the two patents licensed by Convolve. Convolve is asking the court to order defendants to pay compensatory damages, interest fees and legal costs.