為什麼螢幕要全面數位話 - 3C
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By Adele
at 2018-09-28T17:48
at 2018-09-28T17:48
Table of Contents
※ 引述《s84338935 ( )》之銘言:
: 2016第四台全面數位化是因為NCC推動,
: 而且NCC在數位化的時候第四台有
: 審驗明年收視費用的重要參考依據
: 但是10XX系列顯卡出來以後,也取消了VGA。
: 這造成很多用戶困擾多負擔轉接頭或更換螢幕費用
: 為什麼顯示卡要選要全面數位化呢?
這就讓我這種科技業魯蛇肥酸宅來回答
1)高頻類比訊號問題
VGA是類比訊號,解析度越高,代表單位時間內要傳輸的資料越多,訊號的頻率就要拉高,
類比高頻訊號是一個很專業的領域,不論硬體用料/電路設計/韌體調教/產線生產/售後
維修都需要很大的成本
數位訊號的話,電路難度是比類比高頻相對簡單些,還可以利用一些特殊電路設計拉長
傳輸距離
2)VGA接頭大小
現在連HDMI 都有人嫌大了,VGA那麼大一個怎麼塞的進輕薄筆電?不輕薄就不能耍文青拉
3)多媒體需求
可以直接插上某個插頭就可把聲音跟影像一起轉到外部螢幕,肥宅是很懶的
大略的報告一下,給各位參考
--
: 2016第四台全面數位化是因為NCC推動,
: 而且NCC在數位化的時候第四台有
: 審驗明年收視費用的重要參考依據
: 但是10XX系列顯卡出來以後,也取消了VGA。
: 這造成很多用戶困擾多負擔轉接頭或更換螢幕費用
: 為什麼顯示卡要選要全面數位化呢?
這就讓我這種科技業魯蛇肥酸宅來回答
1)高頻類比訊號問題
VGA是類比訊號,解析度越高,代表單位時間內要傳輸的資料越多,訊號的頻率就要拉高,
類比高頻訊號是一個很專業的領域,不論硬體用料/電路設計/韌體調教/產線生產/售後
維修都需要很大的成本
數位訊號的話,電路難度是比類比高頻相對簡單些,還可以利用一些特殊電路設計拉長
傳輸距離
2)VGA接頭大小
現在連HDMI 都有人嫌大了,VGA那麼大一個怎麼塞的進輕薄筆電?不輕薄就不能耍文青拉
3)多媒體需求
可以直接插上某個插頭就可把聲音跟影像一起轉到外部螢幕,肥宅是很懶的
大略的報告一下,給各位參考
--
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