ccd linear TCD2715DG electronic image sensor TCD2717BFG toshiba TCD1711DG toshiba linear image sensor cmos linear image sensors electronic sensor Toshiba image sensor linear sensor cmos image sensor types of image sensors cmos sensor TCD1209DG ccd image sensors TCD2564DG cmos linear image sensor TCD2565BFG linear ccd sensor TCD2566BFG ccd linear image sensor TCD1706DG toshiba ccd TCD1103GFG toshiba sensor TCD2711DG toshiba linear ccd TCD2712DG