Abstract: A method for processing media files includes receiving a request to download a first media file and, in response to receiving the request, generating a first signature that describes a first characteristic of the first media file. The method also includes determining whether the first signature matches any of a first plurality of stored signatures. The method also includes generating a second signature that describes a second characteristic of the first media file in response to determining that the first signature matches one of the first plurality of stored signatures. Additionally the method includes determining whether the second signature matches any of a second plurality of stored signatures and, in response to determining that the second signature matches one or more of the second plurality of stored signatures, denying the request to download the first media file.

Abstract: A system for routing media content files having different format characteristics to a plurality of clients over a communication network includes a content translation router. The content translation router is capable of retrieving the content files. In addition, the content translation router includes processing modules for concurrently modifying content files having differing format characteristics to be compatible for transmission over the communication network for viewing at different ones of the clients.

Abstract: A system for managing media files having different format characteristics includes a transcoder, a content store, and a plurality of clients. The content store is capable of storing a media file in a first format. The clients are each associated with one or more media file formats and capable of playing media files to users. The transcoder is capable of receiving a request identifying a media file from a first client and, in response to receiving the request, retrieving the media file from the content store in a first format. The transcoder is also operable of modifying the media file from the first format to a second format associated with the first client and, while modifying the media file from the first format to the second format, transmitting a modified portion of the media file to the first client.

Abstract: A system for managing media files having different format characteristics includes a transcoder, a content store, and a plurality of clients. The content store is capable of storing a media file in a first format. The clients are each associated with one or more media file formats and capable of playing media files to users. The transcoder is capable of receiving a request identifying a media file from a first client and, in response to receiving the request, retrieving the media file from the content store in a first format. The transcoder is also operable of modifying the media file from the first format to a second format associated with the first client and, while modifying the media file from the first format to the second format, transmitting a modified portion of the media file to the first client.

Abstract: A method for processing media files includes receiving a request to download a first media file and, in response to receiving the request, generating a first signature that describes a first characteristic of the first media file. The method also includes determining whether the first signature matches any of a first plurality of stored signatures. The method also includes generating a second signature that describes a second characteristic of the first media file in response to determining that the first signature matches one of the first plurality of stored signatures. Additionally the method includes determining whether the second signature matches any of a second plurality of stored signatures and, in response to determining that the second signature matches one or more of the second plurality of stored signatures, denying the request to download the first media file.

Abstract: A performance monitoring arrangement conducts auxiliary in-band communications between a line interface unit and one or more channel units of a D4 channel bank without interrupting transmission of digital data to and from a customer premises. During a first, initialization mode of operation, and a second, smart performance-monitoring mode, the data communication format of a channel bank RNPCM bus is modified to allow insertion of an auxiliary line interface unit-sourced command bit between selected bits of the data. During the second mode of operation, the communication format of the channel bank link is further modified to provide for the transmission of the data at an increased data rate. This increased data rate permits a response message bit from the channel unit to be asserted on the RNPCM bus during a first time interval separate from that occupied by the increased rate data.

Abstract: A framing pattern detector comprises a multi-stage input store, an intermediate logic operator, and a decoder. As the serial bit stream is clocked through the input store, the intermediate logic operator subjects sequentially spaced apart bits to a prescribed logic function, and transforms these bits into a transformed bit pattern having a length less than that of the framing pattern. The decoder compares the transformed bit pattern with cyclically rotated versions of a prescribed multi-bit framing pattern template. In response to a match between the transformed pattern with any of the cyclically rotated versions of the template, the decoder identifies the framing pattern. If the decoder fails to detect a match, the clocking of the serial bit stream is adjusted until the decoder identifies the framing pattern.

Abstract: A bleedover prevention circuit prevents a low data value of the last bit of an occupied channel unit time slot from bleeding over into the first and second bit times of an unoccupied channel unit time slot of a channel bank, by forcing the data lead to a high logic level within a terminal portion of the last bit time of an occupied channel unit time slot. The terminal portion of the last bit time occurs within a time interval delayed relative to a sampling clock edge, so that it does not detrimentally impact the validity of the value of the last data bit. If the immediately succeeding channel time slot is unoccupied, driving the data lead high prior to the beginning of such unoccupied channel time slot will render immaterial whether the last data bit value of the occupied channel time slot is a `one` or a `zero`, and will serve to effectively overcome the relatively long charging time, that would otherwise be required to pull the data lead high if the last data bit value were a `zero`.