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PDMI (Portable Digital Media Interface) is an interconnection standard for portable media players. It has been developed by CEA (Consumer Electronics Association) as ANSI/CEA-2017-A standard ''Common Interconnection for Portable Media Players'' in February 2010. Chaired by David McLauchlan from Microsoft, the standard was developed with the input or support of over fifty consumer electronics companies worldwide. 〔(CEA-2017, Common Inerconnection for Portable Media Players )〕 == Development and history == CEA-2017-A is the new revision of the earlier ANSI/CEA-2017 standard adopted in July 2007, which used a proprietary serial protocol based on Media Oriented Systems Transport (MOST) in-vehicle network;〔(CEA-2017.1, Serial Communication Protocol for Portable Electronics Devices )〕〔http://electronics.ihs.com/news/newsletters/2007/august/cea-2017-portable-media-connector.htm〕〔(8th MOST Interconnectivity Conference Japan (2007) )〕 the 2007 revision has seen only marginal use in actual devices. New CEA-2017-A devices are not compatible with devices manufactured under the 2007 revision. PDMI connector is intended to serve as a common interconnection between docking devices and displays and portable/nomadic devices with media playback capability. Intended host devices include docking stations for home A/V equipment, in-car entertainment systems, digital media kiosks, and hotel/in-flight entertainment systems, where PDMI aims to replace the ubiquitous iPod cradle connector.〔(【引用サイトリンク】title=DisplayPort Technical Overview, May 2010 )〕 PDMI uses a 30 pin receptacle with approximate size of 2.5 mm by 22 mm; a cradle-style connector is also defined. The PDMI connector includes the following electrical interfaces: * 2-lane DisplayPort v1.1a with AUX Channel, Hot Plug Detect, and 3.3 V power line * USB 3.0, USB 2.0, and USB On-The-Go * Analog stereo line-out for legacy audio * HDMI CEC for remote control * High output power line from both host and portable device DisplayPort component provides data rate of 4.32 Gbit/s and supports up to 1080p60 video and 8-channel audio playback on an attached display device, as well as EDID and display control commands. DisplayPort signal can be converted to HDMI format using active converter circuitry in the dock or external signal conversion adapter powered by 3.3 V DisplayPort power. Power supply from both the host (docking station) and portable device allows for supporting the portable device with power and battery charging, as well as supporting accessories from the portable device. USB 3.0 "SuperSpeed", USB 2.0, and USB On-The-Go support file transfer and device control, as well as device-to-device intercommunication. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PDMI」の詳細全文を読む スポンサード リンク
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