HM is the Tosh DLP series =>HM 是東芝 DLP系列
first xx is size, later xx is model => 前兩碼是代表尺寸大小 後兩碼是代表型號

you can check on 'display families' board. really the best and largest RP in TW now!
=> 可到"螢幕顯示品牌家族大集合討論區 ", 目前在台灣東芝HM DLP 背投系列是最好也是最大尺寸的背投
連結: Toshiba DLP TV users [46/52/62HM(X)84/94]