DEFINITION

HDTV
HIGH DEFINITION TELEVISION

DEFINITION 1

HDTV; HD (high definition television) Any one of several systems of television that use more than 1,000 scanning lines and an aspect ratio of 16:9.

http://www.cybercollege.com/gloss_h.htm

DEFINITION 2

HDTV (High Definition Television) High definition television. Typically 1,125-, 1,080- and 1,035-line interlace and 1,080-line progressive formats in a 16:9 aspect ratio. Officially a format is high definition if it has at least twice the horizontal and vertical resolution of the standard signal being used. There is a debate as to whether 720-line progressive is also high definition. It is the opinion of the editor that 720-line progressive is an HDTV format.

http://www.tech-notes.net/Glossary/Glos%20files/h.htm

DEFINITION 3

HIGH DEFINITION TELEVISION (HDTV) A form that provides crystal-clear quality wide-screen pictures with compact disc-quality surround sound. The aspect ratio of HDTV pictures is16:9 as opposed to today's 4:3.

http://www.highdef.org/library/glossary.htm#hformat

DEFINITION 4

HDTV (high definition television) is a television display technology that provides picture quality similar to 35 mm. movies with sound quality similar to that of today's compact disc. Some television stations have begun transmitting HDTV broadcasts to users on a limited number of channels. HDTV generally uses digital rather than analog signal transmission.

http://whatis.techtarget.com/definitionsSearchResults/1,289878,sid9,00.html?query=hdtv
 

DEFINITION 5

HDTV (high definition television) is the new standard in television technology which provides wide-screen picture quality similar to 35mm film along with compact disc (CD) sound quality. HDTV is part of several standards incorporated in digital television or DTV. Basically, DTV is composed of three separate standards:
-HDTV 1080 (1080 lines of resolution, 16:9 aspect ratio
-HDTV 720 (720 lines of resolution, 166:9 aspect ratio)
-SDTV (480 lines of resolution, 16:9 or 4:3 aspect ratio)

http://www.hdpictures.com/hdtv.htm  

DEFINITION 6

Short for High-Definition Television, a new type of television that provides much better resolution than current televisions based on the NTSC standard. There are a number of competing HDTV standards, which is one reason that the new technology has not been widely implemented. All of the standards support a wider screen than NTSC and roughly twice the resolution. To pump this additional data through the narrow TV channels, images are digitized and then compressed before they are transmitted and then decompressed when they reach the TV.

http://webopedia.internet.com/TERM/H/HDTV.html

นิยาม

HDTV ย่อมาจากคำว่า High Definiton Television แปลเป็นภาษาไทยได้ว่า "โทรทัศน์ความคมชัดสูง หรือ โทรทัศน์รายละเอียดสูง" ซึ่ง HDTV เป็นรูปแบบของระบบดิจิตอล Digital ที่ดีกว่าโทรทัศน์ที่ใช้กันอยู่ในปัจจุบัน ซึ่งเป็นระบบ Analog ดังนั้น HDTV จึงเป็นโทรทัศน์มีคุณภาพทั้งภาพและเสียงสูงกว่าโทรทัศน์ทั่วไป มีระดับความคมชัดสูงสุด ระบบเสียงเป็นแบบรอบทิศทาง เหมือนกับการรับชมภาพจากจอภาพยนตร์ ที่ผู้ชมจะได้รับชมภาพที่สมจริงมากยิ่งขึ้น