Comparing PAL and NTSC video conference formats
Two of the world’s most widely used video formats are NTSC (National Television Standards Committee) and PAL (Phase Alternating Line).
Polycom, a video conferencing technology leader, markets its products for domestic and international usage. If a product was purchased regionally, then it is likely that the correct system will be employed with considerations for compatibility. Two of the world’s most widely used video formats are NTSC (National Television Standards Committee) and PAL (Phase Alternating Line). They will be described briefly in order to provide an understanding about what requirements must be met in order to conduct a successful videoconference.
The Polycom name is used primarily for the models that utilize the NTSC standard. This includes North America, Central America, parts of South America and some Asian countries. Domestically, theses are most commonly referred to as Polycom.
Products marketed in other parts of the world receive the Polyspan naming convention to differentiate between the two product lines. Regions that utilize the PAL standard for video include most of western Europe, portions of South America, most of Africa, many Asian countries and Australia.
Another format (SECAM) is used in parts of Africa, most of eastern Europe and some Asian nations, but that issue is not addressed as part of this discussion.
All of these formats are standards for determining how the resolution of the display will be configured. Someday, when all systems are HD compatible, this issue will no longer be a concern. Until then, the different formats need to be considered when dealing with broadcast and display technology.
In addition to the broadcast formats, when using this technology in different countries, their varying power sources should also be taken into consideration.
When purchasing a Polycom video product designed for domestic use, be sure that the display supports the NTSC format - most newer LCD and Plasmas are capable of this. If a display does not support NTSC, then an additional converter will need to be purchased for that region. This may also be a concern for companies that have international offices, or send representatives abroad to communicate with a home office.
Take all of these issues into consideration before purchasing or using a video conferencing system in your office, or if you plan on traveling abroad.
