Compare with VCD photograph, DVD has a lot of advantages, no matter high fidelity of the definition from image, audio, or from disc broadcast the Dou Yuansheng on the capacity at VCD. How Where is machine of DVD of choose and buy? Can consult the following method:

⑴ should notice the area of DVD codes

The sun that is born from DVD rises, the occurrence meeting that alliance of American movie industry worries about DVD is mad like VCD ground pilfer edition and reprint, the limitative measure that because this adopted technique of a DVD,produces -- zoning. They differentiate the whole world to broadcast software area for the DVD system of 6 different level, the DVD opportunity that provides each division number can broadcast the DVD disc with division same number only. Specific differentiate limits is: The first area is North America, namely the United States and Canada; The 2nd area is Europe and Japan; The 3rd area is area of our country Hong Kong and Taiwan; The 4th area is central america, South America and Australia; The 5th area is Russia, Korea, India and Korea; The 6th area is Chinese inland, the encode of each area mutual cannot compatible. Notable is, the type that many the 2nd area already flowed into on our country market at present (namely Europe and Japanese area) , and the value is inferior, accordingly, consumer should notice to identify. Otherwise, the DVD machine that bought other area cannot be used with respect to the disc that can not find same area. As a result of the change quickly of DVD software and hardware technology, homebred DVD is the CD that can broadcast each area more, call full extent (or 0 area) DVD disc player, choose and buy type of this kind of DVD, can abound the origin of CD greatly.

⑵ should notice the machine core of DVD

Machine core is the most crucial part in DVD disc player, most precious is laser head in machine core (abbreviation bareheaded) , it is the tool that reads dish, its actor bad can affect the performance of DVD machine directly, wait like error correction ability. At present the driver of DVD machine core has two kinds, one kind is DVD-ROM driver, another kind is DVD-PLAYER. Among them the bareheaded of DVD-PLAYER is divided again kind.

In driver of inchoate appropriative DVD relatively high case falls, some manufacturers get the drive of rich and generous profit, use the machine core that regards DVD as disc player with the DVD-ROM that will broadcast DVD data disc on computer. The CD that broadcasts as a result of DVD-ROM is data and program more, taller to CD requirement, because this causes disc player to read a short while response is slower, control function is inferior to core of DVD special machine, the frequency signal of output also the standard of disc player of short of DVD.
Previous12 Next