Upscaling یعنی چی ؟ و کاربردش چیه؟

[ghahremanimehdi]

سلام
روی DVD Player ها و در مشخصات کارت گرافیکها نوشته:
Upscaling 1080i
یا
Upscaling 1080p
میخوام بدونم دقیقا Upscaling چیه و چکار میکنه و ثانیا ایندو چه فرقی دارن ؟

البته Upscaling رو تا حدودی میدونم چیه ولی دقیقا مفهومش رو متوجه نمیشم که ایندو چه تفاوتی دارن:

Definition: Upscaling is a process that mathematically matches the pixel count of the output of a standard or non-hi-def signal (such as standard DVD) to the physical pixel count on an HDTV, which is typically 1280x720 (720p) or 1920x1080 (1080i or 1080p). 720p represents 1,280 pixels displayed across the screen horizontally and 720 pixels down the screen vertically. This arrangement yields 720 horizontal lines on the screen, which are, in turn, displayed progressively, or each line displayed following another.
1080i represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed in two successive fields of 540 lines (interlaced scan).
1080p represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed progressively.

Also Known As: Up Scaling, Video Upscaling

[SAEED_BARCELONA]

به صورت ساده میگم.
یه تصویر وقتی مثلا رزولوشنش 720*1280 باشه اون DVD player یا blu-ray player میاد برای اینکه توی یه full hd tv با اندازه درست حسابی نشونش بده (یعنی بالا و پائین تصویر خالی نباشه) رزولوشنشو افزایش میده و میکنش 1080*1920
به این میگن upscaling to 1080p

[ghahremanimehdi]

ممنون ولی اینی رو که گفتی میدونم میخوام بدونم فرق 1080i و 1080p چیه؟ اینو ببین:
1080i represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed in two successive fields of 540 lines (interlaced scan).
1080p represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed progressively.

[mehjam]

ممنون ولی اینی رو که گفتی میدونم میخوام بدونم فرق 1080i و 1080p چیه؟

It's especially difficult to tell the difference between 1080i and 1080p sources. The difference between DVD and HDTV should be visible on most HDTVs, but especially on smaller sets, it's not nearly as drastic as the difference between standard TV and HDTV.

اميدوارم مفيد باشه.

[davood-d]

ممنون ولی اینی رو که گفتی میدونم میخوام بدونم فرق 1080i و 1080p چیه؟ اینو ببین:
1080i represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed in two successive fields of 540 lines (interlaced scan).
1080p represents 1,920 pixels displayed across a screen horizontally and 1,080 pixels down a screen vertically. This arrangement yields 1,080 horizontal lines, which are, in turn, displayed progressively.

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