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SMPTE RP 165:1994
[ACTIVE] [STABILIZED]

Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Recommended Practice (RP)
Pages
1–6
Abstract
(1.1) This practice, also known as the error detection and handling (EDH) system, describes the generation of error detection checkwords and related status flags to be used optionally in conjunction with the serial digital interface for system M (525/59.94) and systems B, G, H, and I (625/50) digital television equipment operating with either 13.5-MHz or 18-MHz sampled 4:2:2 component digital signals or 4fsc composite digital signals. Although it is preferred that this error-checking method be used in all serial transmitters and receivers, it is recognized that some equipment must minimize complexity. Additionally, there is nothing in this practice which should preclude its use in a parallel digital interface for 4:2:2 component digital signals. (1.2) Two checkwords are defined: one based on a field of active picture samples and the other on a full field of samples. This two-word approach provides continuing error detection for the active picture when the digital signal has passed through processing equipment that has changed data outside the active picture area without recalculating the full-field checkword. (1.3) Three sets of flags are provided to feed forward information regarding detected errors to help facilitate identification of faulty equipment and the type of fault. One set of flags is associated with each of the two field related check-words. A third set of flags is used to provide similar information based on evaluating all of the ancillary data checksums within a field. Implementation of these flags is not a requirement of this practice. (1.4) The checkwords and flags are combined in an error detection data packet which is included as ancillary data in the serial digital signal. At the receiver, a recalculation of check-words may be compared to the error detection data packet information to determine if a transmission error occurred.
Release Tag
19940901-pub
Publication Date
1994-09-01
Approval Date
1994-09-01
Stabilized Date
2008-01-04
DOI
10.5594/SMPTE.RP165.1994
ISBN
978-1-61482-179-3
Link
https://doi.org/10.5594/SMPTE.RP165.1994
Group
SMPTE 32NF Network/Facilities Infrastructure
Keyword(s)
Communication, Networking and Broadcast Technologies, Interfaces, Television, SDI
ICS Codes
33.160.01 Audio, video and audiovisual systems in general
33.170 Television and radio broadcasting
Copyright
© 1994 Society of Motion Picture and Television Engineers, Inc.
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SMPTE RP 165:1994, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at https://doi.org/10.5594/SMPTE.RP165.1994
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SMPTE RP 165:1994, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at https://doi.org/10.5594/SMPTE.RP165.1994
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SMPTE RP 165, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at https://doi.org/10.5594/SMPTE.RP165
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<span class="citation"><cite>SMPTE RP 165:1994</cite>, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at <a href="https://doi.org/10.5594/SMPTE.RP165.1994" target="_blank" rel="noopener">https://doi.org/10.5594/SMPTE.RP165.1994</a></span>
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SMPTE RP 165, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at https://doi.org/10.5594/SMPTE.RP165
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<span class="citation"><cite>SMPTE RP 165</cite>, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television. Available at <a href="https://doi.org/10.5594/SMPTE.RP165" target="_blank" rel="noopener">https://doi.org/10.5594/SMPTE.RP165</a></span>

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SMPTE RP 165:1994, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television
doi: 10.5594/SMPTE.RP165.1994
url: https://doi.org/10.5594/SMPTE.RP165.1994
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<cite id="bib-smpte-rp165-1994">SMPTE RP 165:1994</cite>, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television
<span class="doi">10.5594/SMPTE.RP165.1994</span>
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SMPTE RP 165, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television
doi: 10.5594/SMPTE.RP165
url: https://doi.org/10.5594/SMPTE.RP165
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<cite id="bib-smpte-rp165">SMPTE RP 165</cite>, Error Detection Checkwords and Status Flags for Use in Bit-Serial Digital Interfaces for Television
<span class="doi">10.5594/SMPTE.RP165</span>
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