Problem description:
I heard that there are two camps, so let's be clear.
Analysis:
What is DVD-R/DVD-RW/DVD+R/DVD+RW/DVD-RAM?
Due to the increasing demand for editing and backup of files or movies, DVD programming equipment has become a hot topic recently, and more and more people plan to buy burners. Since the capacity of a single chip is as high as 4.7GB, which is 7 times that of ordinary CD-R discs, if you haven't been to the store for a long time, you will find that there are quite a few kinds of burners on the market, including DVD-R/DVD-RW/DVD-RAM/DVD+R/DVD+RW, but users can see them. These products are collectively called recording DVD, which allows recording and saving data. Before you buy, we will briefly introduce and explain various specifications.
■ What is DVD-RAM?
The specification of DVD-RAM was confirmed by DVD forum as early as 1997, and was first introduced. The main companies responsible for leading the development are Panasonic, Hitachi, Toshiba and Victor who joined later. The reason why the DVD-RAM system was developed so early and recognized by the DVD forum so quickly is actually because these leading companies and clubs are the first people responsible for formulating DVD specifications such as DVD-VIDEO. Because of this, DVD-RAM specification became the original representative of DVD forum.
DVD-RAM can only be read on a dedicated DVD-RAM recorder or recorder, so its compatibility is poor compared with DVD-RW or DVD+RW. However, the advantage of DVD-RAM lies in nonlinear data access, which allows random access to data. Just like a hard disk, you can delete or add file fragments at will, so its greatest performance lies in the access to data. It is characterized by box packaging. The original DVD-RAM 1.0 is only 2.6GB, and its double-sided capacity is 5.2GB. It must be used in a special plastic box. Like MO and MD, due to incompatibility with DVD-ROM, version 2.0 of DVD-RAM was developed, with 4.7GB (single-sided) and 9.4GB (double-sided) DVD-RAM discs.
■ What is DVD-RW?
In view of the box design of DVD-RAM and the inconvenience of DVD-RAM, it cannot be widely used in DVD-related household products.
DVD-RW was born. It is also the only standard specification recognized by DVD forum. In addition, due to DVD-R/RW.
This specification is formulated by the World DVD Development Association, and it is also the most scalable and exchangeable specification in the future.
The full name of DVD-RW is DVD Re-recordable, which means rewritable DVD-r; As the name implies, it has the same function as DVD-R, but
Can be read and written repeatedly, similar to the expansion of CD-RW. Its specification is made by Pioneer, and its capacity is 4.7GB.
Nowadays, high-quality, high-quality DVD has opened up another sky for a new generation of entertainment. In addition to home DVD players,
There is a little-known side to DVD. CD stereo, CD-ROM and even CD-R/RW have been widely accepted by the public, but now
We can also make our own DVD. Whether it is recorded on TV or recorded on DVD by PC.
Works, etc. These are all new entertainment functions provided by DVD-RW.
At the same time, due to the rewritable specification, users can try to see the effect as a pre-recorded DVD movie on the DVD player.
Then I decided to burn it to DVD-R. Although it is not as nonlinear as DVD-RAM, it is low-cost and reliable.
Video recording is its greatest advantage.
■ What is DVD-R?
Due to the demand for more and more materials, DVD Forum adopts the following four points as the basis for formulating DVD-R specifications:
1.DVD-R is a new recording system similar to CD-R.
2. After burning, DVD-R disc has 100% interchangeability with general DVD player.
3. Support multi-session recording method.
4.DVD-R disc has a high cost performance.
DVD-R is a write-once DVD specification developed by Pioneer Company. The earliest disk capacity was 3.95GB, which was later developed.
4.7GB DVD-R disc, version 2.0. After Pioneer introduced DVR-A03 burner, it reduced the cost of the burner laser head.
And the dyeing cost of the disc, which makes the price of DVD-R popular. At present, the application of DVD-R is mainly universal DVD-R, that is to say
DVD-R blank films that can be easily bought in the market are generally general-purpose DVD-R.
Table, and it is the specification of 2.0/ 4.7GB version.
◆ Application of DVD-R:
DVD-R can be used to record DVD images and data just like CD-r.
At the same time, a home audio-video recorder using DVD-R storage medium is introduced. For example, DVR-2000, DVR-7000 and other household appliances make
DVD-R/RW can completely replace the past video tape recorder, and has high quality, quick search, portability and high compatibility.
Movies are no longer difficult.
◆ Development status of DVD-R:
All manufacturers actively produce DVD-R compatible recorders, video recorders and other related products, such as DVD-RAM of Panasonic of Japan.
Burners and video recorders strive to be compatible with DVD-R burning, and DVD-R has developed into the next generation of mainstream storage media.
Clear; At present, the price of CD is also the storage medium with the lowest cost and the highest user acceptance. At present, all recently introduced storage media.
The recorders all support DVD-R recording specifications.
■ What is DVD+RW?
DVD+RW was jointly launched by Sony of Japan, Philips of the Netherlands, RICHO of Japan and Hewlett-Packard of the United States.
At present, it is still in the evaluation stage-is it listed after the DVD-RW system led by Japanese pioneers, or is it decided to launch another one?
The specifications of another DVD system independently developed by the company-DVD+RW.
However, this specification has not been officially recognized by the DVD forum, so DVD+RW can be said to be in a somewhat embarrassing state.
Although it emphasizes interchangeability with other DVD family members, it is rejected by DVD family. The original DVD forum has been until
At present, DVD+RW system is not recognized. Therefore, although DVD+RW is currently designed to be compatible with other DVD family members,
However, it has not been officially recognized by the DVD forum, and the registered trademark is only RW.
At present, the latest specification is DVD+RW version 2.0, and the key point is to achieve a high degree of interchangeability with DVD players, so that you can
Play it on DVD player. It also has a nonlinear access architecture similar to DVD-RAM, which can provide random access to stored data.
The function of access; However, due to the late development process, the cost and popularity of DVD+RW discs are low.
Because the DVD Alliance has abandoned the original specifications of DVD+RW version 1.0, the single-sided recording capacity is 3.0GB, and it has been listed at present.
The mechanical products sold are definitely the latest DVD+RW 2.0 version of Sharp architecture.
■ What is DVD+R?
Since DVD Alliance has developed other better systems by itself, no matter what the original DVD forum is, let's just take it one step at a time.
Writing a DVD once also adopts the route of designing and building a DVD independently, and introduces the DVD+R specification, which is different from DVD-R..
Because of this, the DVD alliance led by major clubs such as Sony in Japan, Philips in the Netherlands, Ricoh in Japan and Hewlett-Packard in the United States is also
Decided to abandon the DVD-R architecture recognized by the original DVD forum and introduce another new way-DVD+R architecture.
◆ DVD+R version 1.0
The DVD Alliance has slightly improved the optical disk architecture of the original DVD-R system and the recording/playing mode of the laser head, making DVD+R.
The CD adopts the same distributed physical address architecture as DVD+RW system, which is convenient for users to burn.
After "one-time" data, you can continue to use the remaining CD data recording space! In other words, DVD+R system is allowed.
Users record data in batches in multiple segments, which is the same as DVD-R.
System architecture.
■ What is DVD MULTI?
From the birth of 1975 Minsheng video system to the present, although there have been countless system specification wars in the middle, both sides of the war are from
This is of course understandable due to the different system specifications. But both sides of this institutional war are from the same "DVD"
Specifications are approved by DVD forum! Therefore, the DVD forum will certainly not sit idly by. On the other hand, regardless of the DVD forum
There are also many major clubs such as Sony in Japan and Philips in the Netherlands in the DVD alliance alliance that opposes and insists on launching DVD+RW system.
Wait, I am also a member of the DVD forum! In this way, there will be a strange situation in which the enemy and the enemy are not divided, and the situation is more complicated!
Presentation of DVD multi
In this chaotic situation of the same nature of various systems, many companies are led by the deadlock between DVD camps.
Watching and not daring to use it rashly, so the DVD burning camp delayed its popularity.
On such a serious issue, DVD burning camps are actually quite familiar, but because of DVD-RAM and DVD-RW.
Both camps have invested a lot of money in research and development, among which DVD-RAM has been put into mass production in PC market for four years, so it is not allowed.
Stop when you say it, so the DVD forum came up with a way to kill two birds with one stone. This solution to the systematic war between our own people,
There are many DVDs.
What is DVD MULTI? DVD MULTI is not a new specification. Why is DVD MULTI between "DVD" and "MULTI"?
Without hyphens, DVD forums never create any new specifications. The purpose of the definition of DVD MULTI is mainly to
Standardize integration and accelerate the rapid popularization of DVD camp.
The present situation of DVD multi-architecture
This can not only completely solve the embarrassing situation of DVD-RAM and DVD-RW family members fighting each other, but also save users.
Taking the time to choose which system to use has many advantages. However, due to the adoption of DVD multi-mode and corresponding to various specifications at the same time, the cost is high.
The increase is inevitable! This may be the only disadvantage of using DVD multi-structure.
Although DVD forum has standardized DVD multimodal, on the other hand, it is not limited by DVD.
The DVD+RW specification approved by the specification group is also threatening, and the DVD+RW camp also recognizes DVD-RW and DVD-R.
The trend of two specifications, so when recording DVD, it is recognized by DVD forum, that is, DVD-RAM and DVD.
After DVD-RW, the DVD alliance competing with the DVD forum will also launch DVD+RW, DVD-RW, DVD-R,
Compatible architecture of DVD+R and "Another DVD MULTI" composed of original CD series. In this way, another system
Alliance war, this is inevitable ...
◆ Two teams have more DVDs.
So from a realistic point of view, the so-called DVD Multi has also developed two camps, one is DVD-RAM/DVD-RW/DVD-R.
Composite specification; The other is DVD-R/-RW DVD+R/+RW composite specification.
At present, a large number of burner products have been put on the market, which has become another DVD specification war. Strangely, Hiticha was also in 2003.
In March, it was announced that all current DVD specifications including DVD-R/DVD-RW/DVD+R/DVD+RW/DVD-RAM would be merged.
The burner is the first one after integration.