What does bdt stand in regarding HDTV?

The abbreviation "BDT" does not have a standard meaning in the context of HDTV (High-Definition Television). Different organizations or companies may use it to refer to various technical features or specific technologies related to HDTV broadcasting or display. Without additional information, it's not possible to accurately define what BDT stands for concerning HDTV. If you're looking for precise information about a particular BDT acronym in the HDTV domain, I recommend referencing the documentation or specifications provided by the relevant manufacturer or organization.