ITU-R BT.709-1
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2013-11-20
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Rec. ITU-R BT.709-1 1
RECOMMENDATION ITU-R BT.709-1
BASIC PARAMETER VALUES FOR THE HDTV STANDARD FOR THE
STUDIO AND FOR INTERNATIONAL PROGRAMME EXCHANGE
(Question ITU-R 27/11)
(1990-1994)
Rec. ITU-R BT.709-1
The ITU Radiocommunication Assembly,
considering
a) that the parameter values of an HDTV studio standard need to be chosen to facilitate:
– the production of HDTV programmes,
– the international exchange of HDTV programmes,
– the introduction of HDTV broadcasting services, and
– the use of HDTV for non-broadcast purposes;
b) that this work is the subject of Question ITU-R 27/11;
c) that there are large benefits to programme producers and broadcasters in the adoption of a single world-wide
standard for HDTV programme production and international programme exchange;
d) that broadcasters and programme producers have a requirement for joint, international production in HDTV;
e) that the HDTV studio standard must be harmonized with those of current and developing television systems
and with those of existing motion-picture film,
recommends
1. that the following parameters be used in the generation of signals in high-definition television studios and for
international exchange of HDTV programmes.
Note 1 – In this Recommendation, the processing model noted below is assumed. The parameters are thus expressed as
components using a digital representation concept. Analogue parameters are derived.
Processing model
– Representation of the optical image as a set of three conceptual images in electrical form.
– Sampling of these conceptual images and arrangement of the samples.
– Conversion of the samples into a set of three electrical signals (RGB).
– Formatting of the RGB signal set.
– Analogue scaling, insertion of blanking intervals and addition of sync signals.
– Digital scaling, multiplexing and addition of timing references.
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