摘要:
A server apparatus receives packetized data and transmits the packetized data over a network. The apparatus includes an input for receiving the packetized data from a signal source. An AC clock counter receives an AC power signal and generates a count value in dependence upon a frequency of the AC power signal. An output is coupled to the network and transmits the packetized data and the count value to a client device. A clock associated with the client device is controlled in dependence upon the count value.
摘要:
A method for developing and administering tests over a computer network. The method provides a way for test deliverers to develop tests in response to either internal requests or external ones originating from parties, such as employment agencies or prospective employers, desiring to test the knowledge of others, such as potential employees. This original request usually specifies certain criteria, such as the number of questions desired and whether the test should be administered adaptively or not, which are treated as a first set of rules. Based on the original request, pools of prospective questions and answers are developed along with a second set of rules covering such matters as grouping, selection and ordering. The result is a test definition and the creation of a prototest which is then implemented in a test definition language developed specifically for that purpose. After a test candidate requests to take a test, a test generated by the test definition is delivered to the test candidate and administered. The questions asked and the test candidate's answers are returned to the test deliverer for grading and eventual statistical analysis.
摘要:
An adaptive decoder generates a program representative datastream, in selectable, encrypted or decrypted form. A method for adaptively processing input encrypted program data with an associated encryption code provides either an encrypted or a decrypted program output. In an encrypted mode, encrypted program data and an associated encryption code is exported to an output port. In a decrypted mode, input encrypted program data is decrypted using an encryption key derived from the encryption code to provide decrypted program data. The decrypted program data is exported to the output port. Non-encrypted program data is exported to an output port in a selectable non-encrypted mode.
摘要:
A digital video system receives a digital bitstream representing video and audio information and containing a plurality of packetized data programs in a data format and includes data units related to the selection of individual programs and individual packetized datastreams associated with a program. The system includes a first processor responsive to the bitstream for capturing program guide information and a second processor responsive to the bitstream for capturing selected program data. The program guide data includes a base data unit for selecting a first program and a second data unit of predetermined offset to the base data unit for selecting a second program. The second processor captures program data by capturing data with identifiers matching an identifier determined from the data units.
摘要:
A decoding method minimizes the use of incorrect program specific information (PSI) parameters across program boundaries and provides default video and audio outputs for reproduction during error conditions. Program representative packetized datastreams incorporating PSI suitable for use in recovering data content of the program are decoded. PSI packets in the datastream are identified and a parameter within the identified PSI data is used to determine whether the identified PSI data is to be used for decoding the program content, irrespective of previous PSI content. Current PSI is updated with the identified PSI data in response to the parameter. Program content packets are identified using the current PSI. The program content packets are assembled into a decoded datastream using the current PSI. The current PSI may also updated with the identified PSI data irrespective of the content of the identified PSI data, provided that there is an absence of a PSI content error indication. Also packets representing default program content are assembled into the output datastream, in response to a PSI validity indication provided by a control parameter in the packetized datastream.
摘要:
A method for the treatment of water using reverse osmosis (RO) membranes and nano-filtration membranes wherein the permeate of the membranes is fluid connected to a feed water source via a pressurized storage buffer tank as well as to the fluid connection to use, the method comprising the steps of supplying treated water through a sanitary fully pressurized buffer tank, and supplying waste water through a recirc loop which contains recirculated concentrate and storing treated water in the buffer tank with low total dissolved solids of less than 10% of feed water, low pH of less than pH 7, and of low total organic carbon of less than 25% of feed water ensuring sanitary storage. It further includes opening a waste valve in the recirc loop which purges recirculated concentrate in order to rapidly reduce the conductivity of the water in the recirc loop. It further includes the steps of operating the waste valve such that it maintains the conductivity of the recirculated waste water in the recirc loop within a pre selected range of values and opening the waste valve when a measured conductivity setpoint is exceeded, and closing the waste valve when a measured conductivity setpoint is met.
摘要:
A program representative packetized datastream is generated from an input packetized datastream representing a plurality of programs. Program content packets comprising a desired program selected from the plurality of programs are identified. Condensed program specific information (CPSI) suitable for use in identifying and assembling the identified packets is formed. The resulting CPSI and the identified packets are formed into a datastream. Program specific information packets and program content packets are also extracted from a packetized datastream and stored on a storage medium.
摘要:
A system and method for improving data loss prevention (DLP) using multiple references to a file in a deduplication backup system is described. In one embodiment, a deduplication backup system generates multiple references to a file. A detection system, operating in the deduplication system or in a data loss prevention (DLP) system coupled to the deduplication system, detects the multiple references, generated by the deduplication system, determines whether the file of at least one of the multiple references is stored outside a domain as specified by a DLP policy, and detects a violation of the DLP policy when the file is stored at a location outside of the specified domain.
摘要:
Techniques for global single instance segment-based indexing are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for global single instance segment-based indexing for backup data. The method may comprise dividing an item being backed up into segments, generating a fingerprint for each segment, and saving an entry for each segment in an index database. Each entry may comprise the fingerprint for the segment.
摘要:
A method of processing a packetized datastream that includes program information and ancillary information used to acquire desired program information packets. The method includes the steps of identifying a first data unit that includes channel information and identifying a plurality of second data units included with the first data unit. The plurality of second data units are of a fixed length, and thus, separated in the packetized datastream by a multiple of a fixed offset. The method further includes the step of acquiring desired second data units using the fixed offset and subsequently determining the available services associated with a program and acquiring the desired program packets from the datastream.