The HDMI 1.4 specification will offer the following enhanced functionalities:
HDMI Ethernet Channel
The HDMI 1.4 specification will add a data channel to the HDMI cable and will enable high-speed bi-directional communication. Connected devices that include this feature will be able to send and receive data via 100 Mb/sec Ethernet, making them instantly ready for any IP-based application.
The HDMI Ethernet Channel will allow an Internet-enabled HDMI device to share its Internet connection with other HDMI devices without the need for a separate Ethernet cable. The new feature will also provide the connection platform to allow HDMI-enabled devices to share content between devices.
Audio Return Channel
The new specification will add an Audio Return Channel that will reduce the number of cables required to deliver audio upstream for processing and playback. In cases where HDTVs are directly receiving audio and video content, this new Audio Return Channel allows the HDTV to send the audio stream to the A/V receiver over the HDMI cable, eliminating the need for an extra cable.
3D Over HDMI
The 1.4 version of the specification will define common 3D formats and resolutions for HDMI-enabled devices. The specification will standardize the input/output portion of the home 3D system and will specify up to dual-stream 1080p resolution.
4K x 2K Resolution Support
The new specification will enable HDMI devices to support high-definition (HD) resolutions four times beyond the resolution of 1080p. Support for 4K x 2K will allow the HDMI interface to transmit content at the same resolution as many digital theaters.
Formats supported include:
Expanded Support For Color Spaces
HDMI technology now supports color spaces designed specifically for digital still cameras. By supporting sYCC601, Adobe RGB and AdobeYCC601, HDMI-enabled display devices will be capable of reproducing more accurate life-like colors when connected to a digital still camera.
Micro HDMI Connector
The Micro HDMI Connector is a significantly smaller 19-pin connector that supports up to 1080p resolutions for portable devices. This new connector is approximately 50% smaller than the size of the existing HDMI Mini Connector.
Automotive Connection System
The Automotive Connection System is a cabling specification designed to be used as the basis for in-vehicle HD content distribution. The HDMI 1.4 specification will provide a solution designed to meet the rigors and environmental issues commonly found in automobiles, such as heat, vibration and noise. Using the Automotive Connection System, automobile manufactures will now have a viable solution for distributing HD content within the car.
"The 1.4 specification will support some of the most exciting and powerful near-term innovations such as Ethernet connectivity and 3D formats. Additionally we are going to broaden our solution by providing a smaller connector for portable devices and a connection system specified for automobiles, as we see both more and different devices adopting the HDMI technology," said Steve Venuti, president of HDMI Licensing, LLC.
New HDMI cables will be also introduced to the market. In order to take advantage of the HDMI Ethernet Channel, users will need to purchase either a Standard HDMI cable with Ethernet, or a High Speed HDMI cable with Ethernet. Consumers connecting an external device to an in-vehicle HDMI-enabled HD system will need the new Automotive HDMI cable. The new cables will be introduced to the market when new HDMI 1.4 devices are available.
The following HDMI cables will be available:
- Standard HDMI Cable - supports data rates up to 1080i/60;
- High Speed HDMI Cable - supports data rates beyond 1080p, including Deep Color and all 3D formats of the new 1.4 specification;
- Standard HDMI Cable with Ethernet - includes Ethernet connectivity;
- High Speed HDMI Cable with Ethernet - includes Ethernet connectivity;
- Automotive HDMI Cable - allows the connection of external HDMI-enabled devices to an in-vehicle HDMI device.
The HDMI specification 1.4 will be available for download at http://www.hdmi.org no later than June 30, 2009.