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Analogix ignites MYDP vs. MHL battle

Posted: 08 Sep 2011 ?? ?Print Version ?Bookmark and Share

Keywords:MYDP? mobility interface? interconnect? MHL?

Peddie agreed. "MHL has some consortium backing and therefore has more brain power and maybe political power behind it. So if I had to pick a winner it would be MHL."

Peddie, however, also acknowledged the strong adoption rate DisplayPort has achieved in the PC, notebook, tablet and monitor spaces. As acceptance of DisplayPort grows, "it would be a natural progression of DisplayPort to support HD display connectivity from mobile devices."

In this report
??MYDP is 'a rogue' interface
?? MHL and HDMI are not the same thing
??Do mobile apps processors support DisplayPort?
??What about MIPI-DSI for mobile devices?

The two analysts agree on this: MYDP and MHL are trying to accomplish the same thing. Lawson said, "I am not aware of any significant trend to support DisplayPort in mobile devices [at this point]. And I would say that the capability added would seem redundant anyway." Calling MYDP "a rogue," Peddie said that it threatens to take the industry "back to the future of a different connector on every system trying to do the same thing."

Meanwhile, STMicroelectronics and Analogix are on a mission to let the whole world know that MHL to HDMI is far from a done deal in the mobile world. They insist that MYDP and SlimPort still have a plenty of time and opportunity to achieve broader acceptance.

Andre Bouwer, vice president of marketing for Analogix, believes MYDP will win support in mobile application processors, operating systems and mobile handsets. Bouwer, while declining to name names, hinted that his company has stirred interest in its forthcoming Slimport products from handset OEMs and apps processor companies.

What exactly would make MYDP more attractive than MHL, then?

Being royalty-free is the first and foremost advantage. SlimPort and MYDP are both based on DisplayPort, a standard owned by VESA and conceived to be a free, open standard.

Second, SlimPort and MYDP can connect to HDMI, VGA and DisplayPort displays. This is an important distinction from MHL, in the view of Analogix's Bouwer, because with SlimPort (or MYDP), professionals can deliver presentations by connecting a smart phone to a projector. "There is no way to connect a phone with MHL to VGA or DisplayPort display devices like projectors," he added.

Third, it's important to note that MHL, SlimPort and MYDP were all created to make the USB connectoralready present to power the phonealso transfer video. The key difference between SlimPort/MYDP and MHL, lies in power consumption when streaming video.

Take an example of Samsung's Galaxy S II smartphone, the first MHL-enabled handset. The Galaxy S II's standard Micro USB port can be used with an MHL connector for HDMI connection to an external display such as an HDTV set. MHL lets the handset send uncompressed 1080P video and audio to the TV. MHL's advantage is that it allows the smartphone's battery to charge while playing back multimedia content.

MHL and HDMI are not the same thing
What may be less openly publicized, though, is that the MHL-enabled mobile device can only draw power from MHL-enabled external displays. "MHL and HDMI are not the same thing," stressed Bouwer. To date, Toshiba is the only company openly committed with a plan to launching MHL-enabled digital TVs.


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