91 results about "Synchronous Data Flow" patented technology

A “Media Identifier” operates on concurrent media streams to provide large numbers of clients with real-time server-side identification of media objects embedded in streaming media, such as radio, television, or Internet broadcasts. Such media objects may include songs, commercials, jingles, station identifiers, etc. Identification of the media objects is provided to clients by comparing client-generated traces computed from media stream samples to a large database of stored, pre-computed traces (i.e., “fingerprints”) of known identification. Further, given a finite number of media streams and a much larger number of clients, many of the traces sent to the server are likely to be almost identical. Therefore, a searchable dynamic trace cache is used to limit the database queries necessary to identify particular traces. This trace cache caches only one copy of recent traces along with the database search results, either positive or negative. Cache entries are then removed as they age.

An apparatus for assessing health of a device comprising a data alignment module for receiving a plurality of sensory outputs and outputting a synchronized data stream, an analysis module for receiving the synchronized data stream and outputting at least one device health feature, and a high level diagnostic feature information fusion module for receiving the at least one device health feature and outputting a device health assessment.

An apparatus for assessing health of a device comprising a data alignment module for receiving a plurality of sensory outputs and outputting a synchronized data stream, an analysis module for receiving the synchronized data stream and outputting at least one device health feature, and a high level diagnostic feature information fusion module for receiving the at least one device health feature and outputting a device health assessment.

The first data flow is buffered at a receiver, and the buffer contents are scanned for metadata. Where metadata are found indicating a second data flow which has not yet arrived, the system enters a stalling phase during which the length of any silent periods in the first data flow are stretched. As the point in the first data flow at which the second data flow is necessary gets closer, the factor by which silent periods are stretched increases exponentially. Once the expected second data flow in fact arrives, playback of two data flows is accelerated by compressing silent periods so as to clear the backlog of additional data that built up in the buffer during the stalling phase.

A method and apparatus for generating a summary of a plurality of distinct data streams (for example video data streams). A plurality of related data streams are collected. The data streams comprise a plurality of segments and each segment is synchronized (205). Overlapping segments of the synchronized data streams are detected (207, 309) and one the overlapping segments is selected (215) to generate a summary (217) which includes the selected overlapping segment.

A “Media Identifier” operates on concurrent media streams to provide large numbers of clients with real-time server-side identification of media objects embedded in streaming media, such as radio, television, or Internet broadcasts. Such media objects may include songs, commercials, jingles, station identifiers, etc. Identification of the media objects is provided to clients by comparing client-generated traces computed from media stream samples to a large database of stored, pre-computed traces (i.e., “fingerprints”) of known identification. Further, given a finite number of media streams and a much larger number of clients, many of the traces sent to the server are likely to be almost identical. Therefore, a searchable dynamic trace cache is used to limit the database queries necessary to identify particular traces. This trace cache caches only one copy of recent traces along with the database search results, either positive or negative. Cache entries are then removed as they age.

A method of and system for acquiring data by a data reader from a transponder in which the data from the transponder does not require a preamble to denote the beginning of the data sequence. A radio frequency signal is continuously transmitted by the card reader to generate a radio frequency field. Once a transponder enters the RF field, then response data is generated by the transponder and received by the card reader. The transmission of the radio frequency signal by the card reader is temporarily stopped on detection of the response data from the transponder, and then reinitiated by the card reader after it stops receiving response data from the transponder in order to regenerate the radio frequency field. The response data subsequently received from the transponder in the radio frequency field is then stored in memory.

Techniques for compensating for synchronous data stream transported over an asynchronous system are provided. The techniques include compensating for network jitter for an asynchronous connection over an asynchronous transport, using frame slip control for compensating for a synchronous connection over an asynchronous transport, and dropping filler frames for compensating for a synchronous connection over an asynchronous transport.

Systems and methods for controlling isochronous data streams are disclosed. Particular aspects of the present disclosure are designed to be used with almost any isochronous data stream, but are well-suited for use with the Universal Serial Bus (USB) protocol. Further, aspects of the present disclosure are flexible to accommodate existing configuration possibilities within the USB protocol as well as accommodate proposed future changes in the USB protocol. The flexibility of the systems and methods is provided by calculating: (1) drift between a USB host system time and the application and (2) drift between the USB host system and a USB device clock. Based on these two drift calculations, a time stamp may be synthesized to program a next delivery schedule. Using this time stamp, jitter correction can take place and uniformly-sized packets may be assembled to pass to an application processor.

The invention discloses a credible sorting method of synchronous data flow procedures based on formal verification. The credible sorting method comprises a Lustre parallel program and a serial C program obtained after sorting of the Lustre parallel program. For any two Lustre programs meeting the requirement for topological sorting, execution semantic equivalence of a Lustre program before topological sorting and a Lustre program after topological sorting is proved, and a C program after sorting and the Lustre program before sorting are equivalent in semantic execution. The credible sorting method of synchronous data flow procedures based on formal verification is developed and achieved based on a formalized language and with a 'vertex topological sorting algorithm with the in-degree as zero' as the theoretical basis. By means of the provement that any two programs meeting the topological sorting property are equivalent in serial semantic execution, during formal verification, all the situations in the process that a parallel language is converted into a serial language, each situation is proved, the program after sorting meets the topological sorting property, so that correctness of a scheme is ensured, and safety and reliability of a whole software system are improved.

A method and an apparatus for synchronizing a data stream are disclosed. The method includes: decoding the data stream to generate a decoded data stream and program clock references; generating a local clock reference; generating a simulated clock reference according to the program clock references and the local clock reference; comparing the local clock reference with the simulated clock reference to generate a comparison result; adjusting a processing timing of the decoded data stream according to the comparison result; and processing the decoded data stream according to the processing timing.

A system synchronizes data flow between a first device and a second device. The system includes a data link that connects two or more devices that are capable of sending and receiving data through a bus. A capture device senses and transfer information through the bus. A ring buffer temporarily stores data transmitted through the bus. A read controller copies or reconstructs data in a length that is different from the length of the data received. A monitor detects underflow or overflow conditions into or out of the ring buffer and compensates for clock drift.