PDM: A versatile digital transmission system for video | Zendy

Burgess G. D. | Zendy

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PDM: A versatile digital transmission system for video

Author(s) -

Burgess G. D.

Publication year - 1992

Publication title -

international journal of digital and analog communication systems

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.344

H-Index - 49

eISSN - 1099-1131

pISSN - 1047-9627

DOI - 10.1002/dac.4510050305

Subject(s) - megabit , computer science , channel (broadcasting) , computer hardware , bandwidth (computing) , decoding methods , coding (social sciences) , data transmission , electronic engineering , telecommunications , engineering , statistics , mathematics

This report discusses a pulse density modulation (PDM) video transmission system. PDM is a one‐bit digital coding scheme with advantages of transparency due to an inherently extended signal bandwidth and relatively simple decoding; these make it ideal for a variety of applications. The system outlined is designed to carry a single analogue video channel, together with several sound channels, over a 140 or 280 Mbit/s digital transmission‐link. An alternative option to the sound channels will be to carry a 2.048 Mbit/s data channel. Since the analogue video input will be PDM coded, this will enable the system to carry video formats which have a flat base‐band frequency response requirement of in excess of 20 MHz (such as HDTV), allowing a large degree of flexibility in use.

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