1、 ECMA-394 1st Edition / December 2010 Recordable Compact Disc Systems CD-R Multi-Speed COPYRIGHT PROTECTED DOCUMENT Ecma International 2010 CD-R System Description Multi-Speed December 2010 Ecma International 2010 Multi-Speed Compact Disc Recordable System Description December 2010 CD-R System Descr
2、iption Multi-Speed Table of Contents December 2010 Ecma International 2010 Table of Contents Table of Contents i List of illustrations iv 1. General . 1-1 1.1 Scope 1-1 1.2 General Description 1-1 1.3 References and conformance 1-3 1.4 Definitions . 1-4 1.4.1 General . 1-4 1.4.2 Disc Lay-out 1-8 1.4
3、.3 Writing modes . 1-10 1.4.4 Signals 1-11 2. Disc Specification 2-1 2.1 General . 2-1 2.2 Conditions for Multi-Speed Media testing at low speeds . 2-1 2.3 Conditions for Multi-Speed Media testing at high speeds 2-1 2.3.1 Standard atmospheric conditions for testing. . 2-1 2.3.2 The optical pick-up u
4、nits for disc measurements. 2-1 2.3.3 Write strategy for media testing 2-2 2.3.4 Nominal conditions for media testing 2-3 2.4 The unrecorded disc . 2-4 2.5 The recorded disc . 2-8 3. Requirements all previous Sessions must be finalized. An example of a Multisession disc is given in Figure 12-18. Rem
5、arks: Only Finalized Sessions can in general be played back on conventional CD players. For further descriptions of each disc area, see chapter 5. For further descriptions of the Multisession disc, see chapter 11. CD-R System Description Multi-Speed Chapter I General December 2010 1-9 Ecma Internati
6、onal 2010 Unrecorded disc: The Information Area of an unrecorded CD-R disc contains a pre-groove with CLV clocking information (wobble) and a time code (ATIP). In addition to the time code encoded in ATIP, during the Lead-in Area the CD-R disc also contains extra information, such as: disc identific
7、ation, write power, speed range and OPC parameters (see chapter 4). Partially Recorded disc: The Data Organization of the partially recorded disc is defined in chapter 5 and includes: 1: Power Calibration Area 1 and /or 2 (PCA1, PCA2): partially recorded. The PCA1 and PCA2 are reserved for determini
8、ng the correct writing power of a disc, see chapter 5.3. As well in PCA1 as in PCA2 all 100 partitions are used sequentially. 2: Program Memory Area (PMA): partially recorded. The PMA must reflect the complete track information of all Sessions on the CD-R disc. (see chapter 5.4) remark: In case the
9、Incomplete Track features are used, the PMA may not always reflect the exact track information of the Program Area (see chapter 5.4.1.2). 3: One or more Session(s): all Sessions, except the last Session: finalized. Lead-in Area: recorded with subcode mode 1 no link points are used; adding data is no
10、t possible. SAO: complete Session is written in one write action Lead-in Area, Program Area and Lead-out Area are written in one uninterrupted write action: the Track information of the Session is recorded in the Lead-in Area and in the PMA; subcode mode 5, point=B0 in the Lead-in Area gives the sta
11、rt of the next Program Area; adding data in a new Session is possible. TAO: complete Track is written in one write action Pre Gap + Track content + Post Gap are written as one packet: the start and stop time of the Track are recorded in the PMA; the Track starts and ends with a link point; adding da
12、ta in a new Track is possible. Packet writing: writing of fixed or variable size packets in an Incomplete Track or Reserved Track The Track has to be initialized by writing the Pre Gap with Track Descriptor Blocks. The Pre Gap ends with a link point: the start time and stop time of the Track are rec
13、orded in the PMA; each added packet starts and ends with a link point; packets can be added to the Track. CD-R System Description Multi-Speed Chapter I General December 2010 1-11 Ecma International 2010 1.4.4 Signals Signals before recording: 0I lI gI )gI+l(I)gI-l(I2=bRC o ffse t ra d i a l m0 .1 at
14、 gI 2I-1I )2I-1(I=WI (pp)2I-1IW(rms)I Signals after recording: topI )la(I ,gaI )gaI+la(I)gaI-la(I2=aRC topI11I ,topI 3I 11I3I : Blank area level : Land level : Groove level before recording : Radial Contrast before recording : Push Pull magnitude before recording (I1-I2) is measured after low pass f
15、iltering (f 0.5 Radial : 0.5 Laser read power : 0.7 Radial : 0.5 Laser read power : +0.05 16 Tangential tracking signals 16.1 Locking frequency for the groove wobble 22.05 kHz 16.2 Normalized wobble signal 0.035 - 0.060 See attachment 13.7 16.3 CNR of wobble 35 dB BW = 1 kHz CD-R System Description
16、Multi-Speed Chapter 2 Disc Specification December 2010 2-5 Ecma International 2010 characteristic to be specified requirement remarks 17 Time encoding 17.1 Wobble modulation: ATIP See chapter 4 17.2 ATER: 26 dB BW = 1 kHz 18 Read conditions 18.1 Power of read spot 18.2 Read stability 0.7 mW 106 times successively read from a single track, CW, in central spot For T = 70 oC and Pread = 0.7 mW
