osta cd-r compatibility study results from phase 2 - OSTA - Optical ...

More documents

Recommendations

Info

CD-R Compatibility Study – Phase 2 4.1 Participants Participants in the study included CD-R media manufacturers, CD-R writer manufacturers, and the Steering Committee, which had representation from Apex Systems, Audio Development, CD Associates, Eastman Kodak, Micro Designs International, Philips, and SOCS Laser Products. Below is the detailed list of participants. Note that even though eleven writer companies participated in the study, two entered more than one model. Also, one media company submitted two versions of media. OSTA Cross Compatibility Test - Phase 2 1997 Writers Media Testing Hewlett-Packard (2X) Imation (3M) Apex Systems JVC (2X) KAO Audio Development Kodak (2X and 6X) Kodak CD Associates Matsushita (2X) Mitsubishi (Verbatim) Kodak Philips (2X) Mitsui Toatsu Pinnacle Micro (2X) Pioneer Pioneer (4X) Princo Ricoh (2X) Ricoh Sony (2X) Taiyo Yuden Teac (2X) TDK Yamaha (4X) 4.2 Testing Goals The specific goals for Phase 2 were: • Determine if there were measured improvements of written disc quality compared to Phase 1 results. • Expand testing to include blank media testing and determine if measurements met Orange Book specifications. • Include higher speed readers for reader interchange compatibility and determine how higher speed recording and high speed reading affected data recovery as well as CD-R read access times compared to pressed CD-ROM. • Increase the number of media manufacturers and recorder manufacturers in the study to assess industry maturity trends. • Increase the number of recorded discs for each media/recorder combination from three to four to statistically improve the study confidence limits. © OSTA – Optical Storage Technology Association 5
CD-R Compatibility Study – Phase 2 5.0 Communication of Results The participating companies prepared results of their individual studies and made presentations to OSTA member company representatives during regularly scheduled OSTA CD/DVD Physical Compatibility Subcommittee meetings. Reports to OSTA members included: • Blank CD-R Media Testing Report • Physical Compatibility of Written Media Report • CD-R Interchangeability Study • Interchange Readability Testing Report Global population data from the blank media testing and recorded CD-R quality testing is available in Excel format and can be obtained by accessing the OSTA World Wide Web site, www.osta.org. 6.0 Blank Media Testing In the parameter compatibility study we set out to compare the following Orange Book parameters: linear velocity, land and groove reflectivity, push-pull, radial contrast, radial noise, wobble amplitude, wobble CNR, ATIP error rate and optimal write power (at 1X, 2X and 4X) for all submitted CD-R media (i.e. five blank discs each from 11 manufacturing processes). The study investigated variability of these parameters as a function of disc radius, within the sets of five and between manufacturers. The entire test was executed by Apex Systems on a single Apex OHMT-500 CD-R tester, which was regularly monitored for drift using two reference discs. As a consequence the reported variations and deviations could all be proven to be statistically significant and accurate. For detailed measurement conditions, methods and results, one is referred to the full report. The findings and conclusions are, in summary: • Many of the pre-recorded parameters, but in particular land and groove reflection, push-pull, radial contrast and wobble CNR, show (fairly small) radial dependencies characteristic for the manufacturing process. Each manufacturer appears to have a unique combination of these, effectively supplying a “fingerprint” of the process. • Optimal write power does not appear to vary across the disc for most media with the notable exception of two manufacturers. 6 © OSTA – Optical Storage Technology Association
Page 1 and 2: OSTA CD-R COMPATIBILITY STUDY RESUL
Page 3 and 4: page: http://www.osta.org. "OSTA" i
Page 6 and 7: CD-R Compatibility Study - Phase 2
Page 60 and 61:
CD-R Compatibility Study - Phase 2
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
CD-R Computability Study - Phase 2
show all

osta cd-r compatibility study results from phase 2 - OSTA - Optical ...

Create successful ePaper yourself

Delete template?

Save as template?