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| Book Subscribers > Format Verification News |
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TO:
All NDA Contractors of DVD Specifications for Read-Only Disc We are pleased to announce you that DVD Forum will be open to DVD related business companies, and also, that we will have new 7 steering committee member companies, in addition to the present 10 steering committee member companies. Thanks to such consolidation, we are striving for world wide expansion of DVD related business and try to facilitate the participation of DVD related companies. We have already commenced DVD Verification Services for DVD-ROM, DVD-RAM including DVD-R, which have already been standardized. The following verification laboratory will provide DVD Verification Service on DVD-R for you.
Pioneer DVD-R Verification Laboratory DVD Format Verification Services for DVD-R will be commenced in September, 1998. DVD Format Verification News has been issued based on information of the Japanese market, so far. It is our great pleasure to inform you that we can make information including the European and North American market available for you since Philips and Warner Advanced Media Operations have become a member company of publishers of DVD Format Verification News. We would like to present our compliments to you for distributing DVD Format Verification News File # 008 by introducing our new DVD Format Verification Service activities to you. Sincerely,
Tokyo (Toshiba) Laboratory (Note 1) Distribution of DVD Format Verification News is restricted to NDA Contractors of DVD Specifications for Read-Only Disc, therefore, disclosure of the information described in this news letter is prohibited. (Note 2) This news letter has been edited in accordance with information relating to Format Verification in the Japanese, European, and North American market. English translation is going to be distributed separately. (Note 3) Please distribute a copy of this news letter to your staff who uses DVD Book.
1. Report on the results of market inspection We have conducted market inspection by picking up 20 (twenty) DVD Video Disc at random from the Japanese market. For your convenience, the following are the results of it. We would be much obliged if you, DVD related companies which are getting involved in the manufacture of disc would check our report and also, try to improve quality of products. (Results)
5 (five) discs out of 20 (twenty) do not comply with physical
format. (Description)
NG items of Physical format (The measuring results conducted by
one lab.) Logical format : The number of NG of Nine discs
Disc A - 603 In order to detect logical format problems, DVD -Video Verifier (DVD-NF01VE Version 0.9.3) is made available for you by Osaka (Matsushita) Laboratory with charged. We recommend you to use DVD -Video Verifier for detecting logical format problems. 2. Report on the results of market inspection on 6 (six) units of commercially available PC with built-in DVD Video in Japan. DVD format verification has been conducted on 6 units of commercially available PC with built-in DVD Video in Japan The following are the results of verification. (Results) Problems on 5 (five) units of PC out of 6 (six) have been detected by conducting format verification using Navigation Files Test Disc. Playback problems have been detected after conducting compatibility test between twenty pieces of commercially available DVD Video Disc and 6 units of PC. As a results, 44 (forty four) problems have been detected out of 120 (a hundred twenty) combinations. (Measures) DVD Verification Laboratory will further investigate this matter, we would appreciate it if you, PC manufacturers would kindly conduct DVD format verification voluntarily for stable market quality of DVD Video. For your convenience, please contact the following verification laboratories for obtaining test discs for format verification on DVD -ROM Drive which plays DVD Video Disc.
(1) Test Stream Disc - Tokyo (Toshiba ) Laboratory 3. Report on the results of market inspection on physical parameter (tilt) Market claim on playback problems which are caused by tilt arouse in the certain market. Thererore, DVD Verification Laboratory has conducted investigagtion on 50 DVD Video Disc which are commercially available in the market. For your reference, the following are the results of investigation. (Results)
- 5(five) discs out of 50(fifty) are out of Radial-Tilt specification. - Quality contorl on disc adhesion of disc which is commercially available in the certain market is insufficient. (Measures) We would appreciate it if you, replicater, would kindly strive for improving accuracy of disc adhesion and also, prevent deterioration due to aging by thermal treatment in such a way that the quality in the market is improved. 4. Information on DVD Video Disc problems (1) Disc with parental management
(2) Disc problems relating to CSS
(3) Disc problems relating to Layer Type
5. Information on DVD Player Playback problems The objective here is to describe DVD player playback problems, and also to make the most use of them for verification of player to determine whether it is compliant with DVD Format in case that it is developed in the future time. We would appreciate it if a person who gets involved in authoring and contents provider would kindly avail to those information described in this newsletter. Please contact the Verification Laboratories if you require deatiled information in this matter. (1) ID No. : 108055
(2) ID No. : 108056
(3) ID No. : 108057
(4) ID No. 104021
(5) ID No. 108058
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