Failsafe stream processing
A technology of stream processing and processing devices, applied in the field of fault tolerance, to achieve the effect of cheap processing resources and improved recovery management
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[0034] figure 1 Several streams S1, S1.1 and S1.2 are shown, as well as S1.a and S1.b. The first stream S1 comprises a sequence of elements E.
[0035] This sequence, or more generally the order of elements through time, carries an information expressed by the mapping I from streams to semantic domains. Furthermore, said information has a quality which is a mapping Q from the semantic domain to the ordered domain, giving each information a quality. Consider for example an MPEG coded stream which carries picture sequence information as information. The quality of this information in its visual representation can be distinguished by factors such as, for example, jitter-related image quality, delay, resolution, etc. In this case, the quality may be a mapping to a measure, such as an empirical value of image quality, 0=not discernible, 1=discernible, 2=acceptable, 3=very good.
[0036] The figure also shows a vertical decomposition of VD as sub-streams shown in "A Unified Data...
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