Rec.ITU-RBT.656-41BT656标准 - CSDN文库

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Rec. ITU-R BT.656-4 1

RECOMMENDATION ITU-R BT.656-4

*

Interfaces for digital component video signals in 525-line

and 625-line television systems operating at the 4:2:2

level of Recommendation ITU-R BT.601 (Part A)

(Question ITU-R 42/6)

(1986-1992-1994-1995-1998)

The ITU Radiocommunication Assembly,

considering

a) that there are clear advantages for television broadcasting organizations and programme

producers in digital studio standards which have the greatest number of significant parameter values

common to 525-line and 625-line systems;

b) that a worldwide compatible digital approach will permit the development of equipment

with many common features, permit operating economies and facilitate the international exchange

of programmes;

c) that to implement the above objectives, agreement has been reached on the fundamental

encoding parameters of digital television for studios in the form of Recommendation

ITU-R BT.601;

d) that the practical implementation of Recommendation ITU-R BT.601 requires definition of

details of interfaces and the data streams traversing them;

e) that such interfaces should have a maximum of commonality between 525-line and 625-line

versions;

f) that in the practical implementation of Recommendation ITU-R BT.601 it is desirable that

interfaces be defined in both serial and parallel forms;

g) that digital television signals produced by these interfaces may be a potential source of

interference to other services, and due notice must be taken of No. 964 of the Radio Regulations

(RR),

recommends

that where interfaces are required for component-coded digital video signals described in

Recommendation ITU-R BT.601 (Part A) in television studios, the interfaces and the data streams

that will traverse them should be in accordance with the following description, defining both

bit-parallel and bit-serial implementations.

*

Radiocommunication Study Group 6 made editorial amendments to this Recommendation in 2003 in

accordance with Resolution ITU-R 44.

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