Cable Television Laboratories Inc. has sharpened OpenCable's resolution with the addition of high-definition elements to its Host Core Functional Requirements Specification.
The cable-technology consortium today last week said it has added HD elements to the OpenCable Application Platform (OCAP) 2.0 software specification and the Data Over Cable Service Interface Specification Set-top Gateway requirements issued earlier this year.
The High Definition Host specifications define the requirements for a retail set-top box that can decode digital HD programs provided by cable networks.
The new specification includes requirements for the baseband Digital Video Interface (DVI) with High Bandwidth Digital Content Protection (HDCP) for picture clarity.
"Incorporating DVI and HDCP into the OpenCable High Definition Host spec is a major step in fulfilling the cable industry's support for this digital connector," said CableLabs vice president of advanced platforms and services Don Dulchinos.
The specification also provides connection interface guidelines — such as IEEE-1394 with Digital Transmission Content Protection and high-definition analog component interface (EIA/CEA-770.3-C) — used to connect set-tops to televisions and recorders.