UID1453346
威望0
金钱132
交易诚信度0
主题1
帖子20
注册时间2019-1-8
最后登录2022-1-26
新手上路
交易诚信度0
注册时间2019-1-8
|
马上注册 家电论坛,众多有奖活动等你来参与!
您需要 登录 才可以下载或查看,没有账号?注册
x
英文原文:forbes 福布斯
LG’s 2020 4K OLED And LCD TVs Don’t Support Full 48Gbps HDMI 2.1https://www.forbes.com/sites/johnarcher/2020/05/04/lgs-2020-4k-oled-and-lcd-tvs-dont-support-full-hdmi-21/#5eb2306276cd
LG has contacted me today to say that contrary to initial communications, and in a turn around from the HDMI 2.1 situation introduced with its 2019 4K TVs, none of its 2020 4K TVs, OLED or LCD, will carry ‘full bandwidth’ HDMI ports capable of handling HDMI 2.1’s maximum 48Gbps data rate. The good news is that this almost certainly doesn’t matter in real world terms.
The 48Gbps rate is required to handle uncompressed 12-bit 4K at 120Hz with RGB 4:4:4 chroma sampling. LG tells me now, though, that while all the HDMIs on its premium 2019 TVs were indeed full 48Gbps examples, all four HDMIs on the WX, GX and CX OLED TVs will instead handle 10-bit (rather than 12-bit) 4K at 120Hz with RGB 4:4:4 chroma sampling. This implies a likely 40Gbps data rate.
On LG’s BX OLED and the NANO91, NANO90 and NANO86 LCD TVs (which use LG’s Alpha 7 Gen 3 processor, rather than the Alpha 9 Gen 3 processor found on the premium OLEDs) you will get two HDMI 2.1 ports capable of 10-bit 4K at 120Hz with RGB 4:4:4, and two lower bandwidth ports that max out at 4K/60P with 8-bit RGB 4:4:4.
There’s no getting round the fact that the HDMI situation with LG’s 2020 4K TVs is a pretty big turn around from the brand’s 2019 position, where it was very vocal about its desire to reduce the confusion and worry associated with buying a new TV by simply offering full HDMI 2.1 support when its rivals did not (even this year, so far as I know only one brand, Sony, is offering 48Gbps HDMI 2.1 support, on just its XH90 TVs). So why the change of heart?
中文大意:LG 20年的新款4K OLED 和LCD电视的HDMI 2.1 接口只有40Gbps速度,不是2.1全速48Gbps,格式上无法支持 12bit 4k/120Hz RGB 4:4:4。
LG的解释:因为市面上现在没有能输出48Gbps 的设备,使用场景有限,然后4k电视用的芯片因为要照顾到LG AI功能等,无法处理这么更高速度的HDMI信号,所以今年新款4k只有两个口支持10bit 4k/120Hz RGB 4:4:4,剩下两个只支持4k/60p 8bit RGB 4:4:4
|
|