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SMPTE ST 352

Payload Identification Codes For Serial Digital Interfaces

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Organization: SMPTE
Publication Date: 5 February 2013
Status: active
Page Count: 28
scope:

This standard defines the specification of a 4-byte payload identifier that describes aspects of the payload carried on the SMPTE Serial Digital Interface (SDI) such as: the digital interface standard; picture rate; sampling structure; aspect ratio; colorimetry; bit depth and channel or link assignment. Other application specific aspects of the payload such as audio channel usage, may optionally be described in application specific documents that reference SMPTE ST 352.

The payload identifier is applicable to all serial digital interfaces and all payloads that produce a directly viewable image on a display device. Furthermore, the viewable image must be a recognizable representation of the source image content.

The payload identifier is mandatory for some reference standards and optional in other reference standards. Refer to the applicable reference standards for further information on mandatory or optional usage of the SMPTE ST 352 payload identifier.

he standard defines how the payload identifier is placed into a 10-bit ancillary data packet according to SMPTE ST 291-1.

It also specifies the repetition rate of the ancillary data packet, and provides the preferred horizontal and vertical location for the placement of the packet in different digital interfaces.

The standard defines values for some of the bit fields of each byte of the 4-byte payload identifier, although the values for other bit fields can have custom definitions.

The standard also defines the Payload Identification Code assignment process and associated on-line register for Byte 1 Values. See Annex A for details on how to register new values.

Annex B and Annex C define the assigned Payload Identification codes and byte 2, 3 and 4 values for legacy systems.

Annex D shows the mapping of the payload identifier from the ancillary data packet structure of SMPTE ST 291-1 to the K-L-V data structure of SMPTE ST 336 as a fixed-length data pack.

Document History

SMPTE ST 352
February 5, 2013
Payload Identification Codes For Serial Digital Interfaces
This standard defines the specification of a 4-byte payload identifier that describes aspects of the payload carried on the SMPTE Serial Digital Interface (SDI) such as: the digital interface...
March 30, 2011
Payload Identification Codes for Serial Digital Interfaces
This standard defines the specification of a 4-byte payload identifier which may be added to digital interfaces for the purpose of identifying the payload. The payload identifier is applicable to all...
March 30, 2011
Payload Identification Codes for Serial Digital Interfaces — Amendment 1
Purpose This Amendment to SMPTE ST 352 changes the document title to more accurately reflect the current usage of the payload identifier; removes the normative reference to SMPTE 292; removes the...
February 23, 2010
Video Payload Identification Codes for Serial Digital Interfaces
A description is not available for this item.
June 19, 2002
Television (Dynamic) - Video Payload Identification for Digital Interfaces
A description is not available for this item.
June 25, 2001
Television - Video Payload Identification for Digital Television Interfaces
A description is not available for this item.

References

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