Talk:Display Data Channel

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some monitors can have settings ajusted via ddc afaik, like brightness, or trigger a degausing —Preceding unsigned comment added by (talkcontribs)

You're right. I added a "DDC/CI" section. --Heron 09:24, 24 Apr 2005 (UTC)

Disabling DDC/CI is not relevant[edit]

Is that section really needed in an article about displays standards? Instructions on how to fix problems with computers should not be part of an encyclopaedia. In my opinion, it should be either removed or rewritten to something like DDC/CI Operating System support, explaining problems that may appear if the standard is not supported by a monitor. Elideb (talk) 14:09, 30 March 2009 (UTC)[reply]

DDC Address and octet read[edit]

how the first octet read is a1h if the slave address is always 0x50 is not intuitive. Either elaborate or remove it. — Preceding unsigned comment added by (talk) 00:14, 3 April 2015 (UTC)[reply]

On the I2C bus, the first byte of a transaction consists of the 7 address bits, transmitted MSB first, followed by the read/write bit (R=1, W=0). So the byte is made up by (addr << 1) + 1, or 2*addr+1, which is 2*0x50+1 in this case, resulting in 0xA1.
However, I agree this sentence should be removed. The information is completely irrelevant.
-- (talk) 17:58, 3 December 2016 (UTC)[reply]

DDC2B unidirectional?[edit]

"DDC2B is unidirectional and allows only one bus master - the graphics adapter." How is that possible? If it truly was unidirectional and the graphics adapter is the bus master, how is the EDID getting from the display to the graphics adapter? Am I misunderstanding bidirectionality in this context? Samorost1 (talk) 16:10, 19 January 2022 (UTC)[reply]


A popular program is ClickMonitorDDC. Please include in the article

Download Mirrors:[edit]

Project's website is gone:[edit]

Repositories Mentioning it:[edit]

Rj.amdphreak (talk) 20:00, 17 February 2022 (UTC)[reply]