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11.1. Introduction

A TFS, Transport File System (TFS) or the ATSC A95 TSFS, provides a mechanism for delivering various data types simultaneously from a small number of data servers to a large number of clients, also referred to as receivers [A95].

A TFS is typically part of a large system and data transmission food chain that collectively enables receivers to retrieve files (see Figure 11.1). Essentially, it is similar to the commonly used network file system, except that it is broadcasted. Files could often be transferred from the data source to the receiver through a terrestrial broadcast or an ISP. Both the broadcaster and the ISP may pull these files from a Web-server containing the data source.


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