Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629943
Title: A multimedia architecture for the multiplexing and transmission of uncompressed video and audio signals
Author: Sotiropoulos, Sotiris
Awarding Body: University of Manchester
Current Institution: University of Manchester
Date of Award: 2001
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Abstract:
This work discusses the design and the implementation of a fibre based, low cost communication system for the transmission of uncompressed video and audio signals. A newly devised multiplexing scheme with a special frame format is used to multiplex different sources of data. The special frame developed allows expandability for the multichannel transmission of audio-video signals as well as multiplexing with other types of data requiring the same bandwidth that is necessary for the transmission of the video signals only. Transmission rate of the ancillary data can be varied according to the video sampling frequency, which is the system main clock and can be changed, making the system f1exible and suitable for different applications. The thesis describes in detail the design and implementation of a single channel system for the transmission of one video and two audio channels as well as the expansion of this system to a 16 video channel system containing audio and non-audio data. Measurements were taken for the single channel configuration in order to examine the frequency behaviour, the time domain response and the noise performance of the system as a whole and its constituent sections. The results proved the reliability of the transfer mechanism and the high quality of the recovered audio-video signals. The flexibility of the system is shown by observing its performance using three different main clock frequencies and discussing different possible multimedia configurations of the system by exploiting the capabilities of the commercially available Programmable Logic Devices (PLDs). The transmission frame and the system structure allow efficient auxiliary data transfer and low bit rate transmission of uncompressed video when compared to existing systems. Furthermore, in some cases, the system can achieve signal-to-quantisation noise improvement of more than 2 dB over the standard 4sc PAL video.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.629943  DOI: Not available
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