Overview
IEC 60050-723:1997/AMD1:1999 is an amendment to the International Electrotechnical Vocabulary (IEV), focusing on Chapter 723 - Broadcasting: Sound, Television, Data. Published by the International Electrotechnical Commission (IEC), this document updates terms and definitions essential to audio, video, and multimedia systems regarding broadcasting technologies. It offers standardized vocabulary for concepts relating to digital television, three-dimensional television, and broadcasting data, facilitating clear communication and interoperability among professionals in the field.
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Key Topics
The amendment introduces and clarifies terminology crucial for modern broadcasting technologies, including:
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General Terms: Definitions for foundational broadcasting concepts, ensuring consistent understanding.
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Digital Television:
- Digital TV is defined as television where picture information is represented by digital signals.
- Key terms such as analogue signal, digital signal, analogue-to-digital (A/D) conversion, digital-to-analogue (D/A) conversion, and associated converters are defined precisely.
- Concepts like coding, coding devices (encoder), decoding, decoding devices (decoder), and codec systems for uni-directional and bi-directional transmission are elaborated.
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Signal Sampling:
- Definitions of signal samples, sampling processes, and distinctions between orthogonal and non-orthogonal sampling methods are described to clarify how signals are digitized and processed.
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Three-Dimensional Television: Included in a separate section (723-11), this addresses emerging technology in immersive broadcasting experiences.
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Coding Techniques:
- Component (digital) coding and composite (digital) coding methods for converting color television signals into digital form.
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Binary Elements:
- Explanation of binary digits (bits), least significant bit (LSB), and most significant bit (MSB) in the context of code words, critical for understanding digital data representation.
Applications
This standard is pivotal for professionals and organizations involved in:
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Broadcast System Design: Ensuring equipment and software adhere to globally accepted definitions and processes for digital and analogue signals in television and sound broadcasting.
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Equipment Manufacturing: Guiding the creation of A/D and D/A converters, codecs, encoders, and decoders to meet international terminology and functional expectations.
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Digital Television Development: Supporting the implementation of digital TV standards, including picture coding, transmission, and reception.
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Multimedia Integration: Assisting in the integration of audio, video, and data services in broadcasting environments.
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Educational and Technical Documentation: Providing authoritative vocabulary for teaching and technical writing in broadcasting and multimedia technology fields.
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International Collaboration: Facilitating clear communication across global technical teams by harmonizing terminology related to broadcasting sound, television, and data.
Related Standards
To complement IEC 60050-723:1997/AMD1:1999, relevant standards include:
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IEC 60050 Series: Other parts of the International Electrotechnical Vocabulary covering electrical and electronic terms in various disciplines.
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IEC TC 100 Standards: Standards developed by the IEC technical committee 100 focused on audio, video and multimedia systems and equipment.
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Broadcasting Signal Standards: Including those governing analogue and digital television transmission methods.
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IEC 60061 Database: Subscription-based repository offering the full spectrum of electrotechnical vocabulary for continuous updates and amendments.
Keywords
International Electrotechnical Vocabulary, IEC 60050-723, broadcasting standards, digital television terminology, analogue-to-digital conversion, digital-to-analogue conversion, A/D converter, D/A converter, codec, encoder, decoder, signal sampling, orthogonal sampling, non-orthogonal sampling, three-dimensional television, multimedia systems, electrotechnical terms, IEC standards, audio-video terminology, broadcasting data standards.