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Chapter 13. Standards and Specifications > CableLabs' Open Cable Application Pl...

13.3. CableLabs' Open Cable Application Platform (OCAP)

The North American cable industry views the use standards as a long term strategy for lowering the cost of delivering higher quality innovative television to viewers [SCTE]. Efforts in digital and interactive TV are well underway, but they tend to be somewhat localized and fractured. This localization is understandable, because the standardization bodies are geographical. Some of the key standards, such as MPEG, have garnered wide acceptance and form the basis for deployments of digital video around the world. Other standards have been regionally adopted, and provide for interpretability within their purview. Additional standards are being defined to allow for more advanced interactive services, however, these standards provide overlapping features and are vying for acceptance.

The OCAP is a port of the DVB MHP specification to fit the needs of the north american cable market [OCAP] developed by Cable Labs [CableLabs]. The standard organization that approves and renders OCAP official is SCTE. Like MHP, the OCAP 1.0 software has access to streams of video, audio, data, and other media assets. Because OCAP is a cable industry specification, these streams are distributed over a cable operator's network. Applications process the streams and present content to the viewer. The platform receives input from the viewer via input devices such as a remote control or keyboard. In response to viewer input, the platform presents visual output to a screen or television and audio output to speakers.


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