DVD与CD的原理和对比

按一下以編輯母片標題樣式,按一下以編輯母片本文樣式,第二階層,第三階層,第四階層,第五階層,*,DVD,與 CD 之差異性,Hunter,碟片剖面圖,穿透層,記錄層,保護層,標籤層,CD,DVD,SL,DL,黏著層,記錄層,記錄層,黏著層,穿透層,穿透層,記錄層,間隔層,55,m,碟片資料讀取,DVD,碟片,逆時鐘方向旋轉 (讀取頭),SL & DL PTP mode,由內向外,DL OTP mode - Layer Jump,Layer 0,由內向外,Layer 1,由外向內,CD 碟片,逆時鐘方向旋轉 (讀取頭),Always 由內向外,機械性質 (I),碟片重量,DVD,12 cm, 13 20 g,8 cm 6 9 g,CD,12 cm 14 33 g,clamping Force,DVD 2, 0.5 N,CD, 1 2 N,機械性質 (II),碟片轉動慣量,DVD,12 cm, 0.04 gm,2,max.,8 cm 0.01 gm,2,max.,碟片 dynamic imbalance,DVD,12 cm 0.01 gm max.,8 cm 0.0045 gm max.,機械性質 (III),Scanning,速度,DVD,SL, 3.49 m/s,DL 3.84 m/s,CD,1.2 m/s 1.4 m/s,機械性質 (IV),CD,碟片,DVD,碟片,3.84 m/s,3.49 m/s,1.4 m/s,1.2 m/s,內圈 (rpm),外圈 (rpm),198,459,231,535,575,1389,1528,633, Normal Speed,尺寸規格 (I),Clamping,區域,DVD, 22 mm(max.) 33 mm (min.),CD 26 mm (max.) 33 mm (min.),Lead-in,區,DVD, 45.2 mm (max.) 48 mm,CD 46 mm (max.) 50 mm,Data,區,DVD, 48 mm 116 mm (max.),CD 50 mm 116 mm (max.),尺寸規格 (II),Lead-out,區,DVD,Data,區,115 mm, 2 mm (min.),115 mm ,Data,區,116 mm, 1 mm (min.),OTP, 45.2 mm (max.) Layer 1 Data,區,CD ,1 mm (min.),中間區,與 PTP 碟片之 Lead-out 區定義同,尺寸規格 (III),CD,碟片,DVD,碟片,3.84 m/s,3.49 m/s,1.4 m/s,1.2 m/s,1.6,0.74,Pitch (,m),3T Pit (,m),0.4,0.44,0.833,0.972,Pit Width (,m),0.38,0.6,Pit Depth (,m),0.1,0.12,誤差規格 (I),軸向 (vertical deviation),DVD,12 cm, 0.3 mm,加速度, 8 m/s,2,max.,允許誤差,0.23 m,CD,12 cm , 0.5 mm,加速度, 10 m/s,2,max.,允許誤差,1 m,誤差規格 (II),徑向 (radial deviation),DVD,runout, 0.05 mm,加速度, 1.1 m/s,2,max.,允許誤差,0.022 m,CD,runout , 0.07 mm,加速度, 0.4 m/s,2,max.,允許誤差,0.03 m,光學特性,CD,碟片,DVD,碟片,雷射波長 (nm),780,650/635,數值孔徑 (NA),0.6,1.32, 0.9, 1.92,2.11,0.45,光點大小 (,m,),聚焦深度 (,m,),反射率 (,%,),70 min.,SL,DL,45 85,18 30,Substrate RI,1.55,資料編碼流程 (I),For DVD,ID data,(4),ID + IED,Add IED,(6),(ID+IED)+CPR_MAI+Main data,Add CPR_MAI & Main Data,(2060),Data Frame before Scrambling,Add EDC,(2064),Scrambled Frame,scramble,main data,16 Scrambled Frame,ECC,encoding,16 Recording Frame,Interleave,16 rows of PO,(2366),Physical Sector,Modulate 26 sync,frames per sector,(2418),38688 bits,資料編碼流程 (II),For CD-ROM Mode 1,Header,(4),Header + Main data + Zero,Main Data,Zero,(2060),Data Sector before Scrambling,Add EDC,ECC,Scrambled Frame,Scramble,data,Scrambled Frame,ECC,encoding,Recording Frame,Physical Frame,Add Sync (24),Merging Bits,588 bits,(2340),Add Sync,(2352),(24),Add,Sub-Code,(33),Modulate,資料傳輸與訊號特性,CD,碟片,DVD,碟片,4.3218,26.16,11.08,4360,17.58,7.35,720,1.4112,Raw Data Rate (Mb/s),User Data Rate (Mb/s),3T,訊號頻率 (kHz),同步,訊號頻率 (kHz),資料規格 (I),CD,碟片,DVD,碟片,EFM,EFM+,EDC+ECC+CIRC,No,17.58,7.35,Yes,IED+EDC+RS-PC,資料調變方式,錯誤訂正碼,Merging Bits,同步,訊號頻率 (kHz),錯誤訂正碼冗餘率,25%,13%,資料規格 (II),CD,碟片,DVD,碟片,2352 bytes,2048 bytes,2336 bytes,2048 bytes,CD-Audio,CD-ROM Mode 1,CD-ROM Mode 2,CD-ROM XA Form 1,CD-ROM XA Form 2,2324 bytes,2048 bytes,碟片容量,DVD,碟片,CD-Audio,CD-ROM Mode 1,CD-ROM Mode 2,CD-ROM XA Form 1,CD-ROM XA Form 2,CD,碟片,747 MB,741 MB,650 MB,738 MB,650 MB,單面單層,單面雙層,雙面單層,雙面雙層,* 74 Min. Disc,4.7 GBytes,8.5 GBytes,9.4 GBytes,17 GBytes,Sector Positioning 規格 (I),DVD,Sector Number, 3 bytes,PTP 30000h,PSN 30000h 25FFFFh,LBA 0h 22FFFFh,OTP 30000h,Layer 0,PSN 30000h 22D05Fh,LBA 0h 1FD05Fh,Layer 1,PSN, DD2FA0h FCFFFFh,LBA 1FD060h 3FA0BFh,Sector Positioning 規格 (II),CD,CD-DA,Q-Data,CD-ROM & others,Q-Data,Header of each Sector,Min, Sec & Frac,三種不同影音光碟片之比較,