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380 results about "Delimiter" patented technology
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A delimiter is a sequence of one or more characters for specifying the boundary between separate, independent regions in plain text or other data streams. An example of a delimiter is the comma character, which acts as a field delimiter in a sequence of comma-separated values. Another example of a delimiter is the time gap used to separate letters and words in the transmission of Morse code.
Method and apparatus for integrating resolution services, registration services, and search services
InactiveUS6895430B1Minimize connection bandwidthData processing applicationsMultiple digital computer combinationsDomain nameWeb browser
An input request may be processed by a device such as a network access apparatus, servlet, applet, stand-alone executable program, or a user interface element such as a microphone, text box object or location field of a web browser. When such an input request is determined to include a valid domain name, it may then be determined whether to perform a search request with the input as a literal string. A search request may be initiated by selecting an exact phrase option from a listbox or by surrounding the input with a delimiter such as the quote sign (e.g., “example.com”) to process the detected domain name as a literal string, otherwise a domain name detected from input may be processed as a registration and / or resolution request. When it is determined that the input is instead processed as a resolution and / or registration request, then the resolvability and / or availability of the domain name may be determined. When the domain name is determined to be not resolvable, then the domain name may be processed as a registration request.
Owner:MEC MANAGEMENT LLC
Delimiters for selection-action pen gesture phrases
InactiveUS20060085767A1Good specificationRapidly completing the strokeProgram controlSpecial data processing applicationsPigtailBiological activation
A pen-based user interface (PBUI) that facilitates input of a delimiter to a scope in a substantially uninterrupted stroke for generating a selection-action gesture phrase. Four delimiter techniques are provided, which include a Multi-stroke delimiter, a button delimiter, timeout delimiter and pigtail delimiter. The Pigtail delimiter uses a small loop to delimit the gesture. The delimiter techniques support integrated scope selection, command activation, and direct manipulation all in a single fluid pen gesture. The delimiter techniques can also be employed to terminate a complex scope consisting of a sequence of multiple pen strokes.
Owner:MICROSOFT TECH LICENSING LLC
Method and apparatus for document clustering and document sketching
ActiveUS7433869B2Data processing applicationsDigital data information retrievalDocument preparationDocumentation
A first embodiment of the invention provides a system that automatically classifies documents in a collection into clusters based on the similarities between documents, that automatically classifies new documents into the right clusters, and that may change the number or parameters of clusters under various circumstances. A second embodiment of the invention provides a technique for comparing two documents, in which a fingerprint or sketch of each document is computed. In particular, this embodiment of the invention uses a specific algorithm to compute the document's fingerprint, One embodiment uses a sentence in the document as a logical delimiter or window from which significant words are extracted and, thereafter, a hash is computed of all pair-wise permutations. Words are extracted based on their weight in the document, which can be computed using measures such as term frequency and the inverse document frequency.
Owner:EBRARY
Automatically scrolling handwritten input user interface for personal digital assistants and the like
InactiveUS6661409B2Character and pattern recognitionCathode-ray tube indicatorsHandwritingText display
Owner:GOOGLE TECHNOLOGY HOLDINGS LLC
Market data message format
Systems and methods are provided for communicating and processing market data. The market data may comprise quotes, orders, trades and / or statistics. A messaging structure allows for adding, re-ordering and / or expanding data, within the printable character set of any language. One or more delimiters are defined and used to delimit data elements within the message structure. The data is interpreted based on templates which may be disseminated prior to the sending of messages and used as an abstraction so that the meaning of data need not be conveyed in the message.
Owner:CHICAGO MERCANTILE EXCHANGE INC
Automatically scrolling handwritten input user interface for personal digital assistants and the like
InactiveUS20030038788A1Character and pattern recognitionCathode-ray tube indicatorsHandwritingManagement tool
A handheld device 100 such as a personal digital assistant (PDA) or the like, a handwritten input user interface (HIUI), a method of interfacing handwritten text and a program product therefor. A lower portion of a touch enabled display is designated as a handwriting input area 104. Action icons 106, 108, 110, 112 and 114 are disposed at a right side of the handwriting user interface 102. Recognized text is displayed on the screen in a text display area located between a file management tool bar 116 and the handwritten input area 104. A scroll bar 118 is disposed at the right side o f the display 112. As text is continuously entered each individual word may be recognized, and inserted into the end of the text stream. A word separator 120 may demarcate or bracket individual words in a continuous input stream. A secondary list of potential recognition candidates may be available for display in a box 128 and offered for substitution for or in lieu of the recognized word. Handwritten text may be continuously entered and displayed in the handwriting input area 104 as digital ink, the input point staying approximately fixed with the ink display automatically scrolling. The input area behaves as a "treadmill" or "ticker tape" that is moving from right to left, thereby giving the illusion of a continuous writing space. The speed of the "treadmill" automatically adapts to writing speed. The device 100 may include a communications function and, in particular the device may include an antenna 122 for wireless communication. Individual function switches, buttons and other controls are disposed about the device.
Owner:GOOGLE TECH HLDG LLC
Delimiters for selection-action pen gesture phrases
InactiveUS7454717B2Rapidly completing the strokeInput/output processes for data processingPigtailBiological activation
A pen-based user interface (PBUI) that facilitates input of a delimiter to a scope in a substantially uninterrupted stroke for generating a selection-action gesture phrase. Four delimiter techniques are provided, which include a Multi-stroke delimiter, a button delimiter, timeout delimiter and pigtail delimiter. The Pigtail delimiter uses a small loop to delimit the gesture. The delimiter techniques support integrated scope selection, command activation, and direct manipulation all in a single fluid pen gesture. The delimiter techniques can also be employed to terminate a complex scope consisting of a sequence of multiple pen strokes.
Owner:MICROSOFT TECH LICENSING LLC
Graphical device for comprehensive viewing and input of variable data via a browser-based display
InactiveUS7080325B2Cathode-ray tube indicatorsInput/output processes for data processingGraphicsDisplay device
A graphical input device, preferably in a browser-based display, resembles a pull-down menu, with a displayed data entry field. The set of possible entries to be displayed along with the graphical input device varies depending on the user. The minimum display width needed for full-width display of the entries is evaluated by scripting and the actual display of the set is generated accordingly. The drop-down list and its listed entries may be wider than the data entry field. The user can thus view and select customized possible entries that cannot fit within the displayed data entry field. According to another aspect of the preferred embodiment of the invention, when the user is making selections from the drop-down list, multiple keyboard entries can be used to cause rapid scrolling to entries that match not only the first character entered, but also to entries whose first n characters match n characters entered while viewing the list. For hierarchically structured and itemized entry lists, matching is preferably performed first to the right of at least one delimiter. The various novel aspects of the invention are implemented using scripting embedded within HTML code so that they are available to users who are browsing web content.
Owner:CALL TELL
Method and apparatus for transporting ethernet data packets via radio frames in a wireless metropolitan area network
InactiveUS6907048B1Improve efficiencyElectric/magnetic signal storageRadio/inductive link selection arrangementsTransceiverWireless transceiver
Method and apparatus for transporting Ethernet data packets via radio frames in a wireless metropolitan area network. A terminal includes a data packet receiver for receiving data packets for communication over a wireless link wherein not every data packet has a same length; a data packet formatting apparatus for formatting the data packets according to radio frames wherein the radio frames each have a same length and wherein the data packets are formatted into the radio frames such that boundaries for the data packets are not necessarily aligned with boundaries for the radio frames; and a wireless transceiver for communicating the radio frames over the wireless link. The packets can be Fast Ethernet packets. The terminal does not convert the Ethernet data packets into a telephony communication protocol or into an asynchronous transfer mode (ATM) protocol prior to communication of the radio frames over the wireless link. The terminal can include a data packet synchronizer for synchronizing the data packets to a clock signal associated with the radio frames. The data packets can be time-division multiplexed into the radio frames. According to another aspect, a method of transporting Ethernet data packets via radio frames includes steps of receiving Ethernet data packets wherein each data packet includes a preamble and a start-of-frame delimiter, stripping off the preamble and start-of-frame delimiter, formatting the packet data according to radio frames, including appending a synch field to the packet data, and appending a length field to the packet data.
Owner:SAMSUNG ELECTRONICS CO LTD
Lane keeping system and lane centering system
ActiveUS20130231830A1Easy to determineSimple modelSteering initiationsDigital data processing detailsDriver/operatorEngineering
A lane keeping system for a vehicle sets a safe zone in which the driver can drive the vehicle. If the system determines that the driver is at risk of leaving the safe zone, the system takes a corrective action, such as notifying the driver or applying a steering correction to the vehicle. The system adjusts the width of the safe zone depending on the driver's capability to stay within the safe zone. A lane centering system may be capable of autonomously steering the vehicle to remain within a lane. The lane centering system may include a controller that determines a target path for the vehicle depending on certain parameters. The controller may model each of the lane delimiters in a simplified form. This facilitates the determination of one of the target paths (the centerline of the lane). The simplified form may be a 3rd order polynomial equation.
Owner:MAGNA ELECTRONICS
Picture delimiter in scalable video coding
ActiveUS20070223595A1Easy to processBitstream parsing easierColor television with pulse code modulationColor television with bandwidth reductionVideo encodingSyntax
The use of a picture delimiter that is contained in a NAL unit type value that is reserved in the current AVC or SVC specification. The present invention provides the scalability information for the H.264 / AVC base layer in such a manner that bitstreams remain decodable with H.264 / AVC decoders. In addition, the picture delimiter of the present invention may contain many other syntax elements that can help in easier processing of bitstreams compared to the plain H.264 / AVC bitstream syntax.
Owner:NOKIA TECHNOLOGLES OY
Method and apparatus for document clustering and document sketching
ActiveUS20070005589A1Digital data information retrievalData processing applicationsDocument preparationDocumentation
A first embodiment of the invention provides a system that automatically classifies documents in a collection into clusters based on the similarities between documents, that automatically classifies new documents into the right clusters, and that may change the number or parameters of clusters under various circumstances. A second embodiment of the invention provides a technique for comparing two documents, in which a fingerprint or sketch of each document is computed. In particular, this embodiment of the invention uses a specific algorithm to compute the document's fingerprint, One embodiment uses a sentence in the document as a logical delimiter or window from which significant words are extracted and, thereafter, a hash is computed of all pair-wise permutations. Words are extracted based on their weight in the document, which can be computed using measures such as term frequency and the inverse document frequency.
Owner:EBRARY
Method and apparatus for linking designated portions of a received document image with an electronic address
A method and apparatus for receiving document images including portions linked to one or more electronic addresses. The linked portion of the document is identified using a predetermined visual attribute, such as bold-face text, or delimiters to mark the portion. The document image is then transmitted using, e.g., existing apparatus for transmitting images, such as a facsimile machine. An electronic address associated with the identified portion of the document is also transmitted using existing techniques, such as by touch-tone telephone. The address may be a voice telephone number, facsimile telephone number, World Wide Web address, or any other address with which communication can be established. At the receiving end, both the document image and electronic address are received. Pattern matching is performed on the document image to identify the portion with the predetermined attribute as a linked portion. The received electronic address is then correlated with the linked portion. When the document image is displayed on, e.g., a computer screen, the linked portion is visually identified so that the recipient can access the electronic address by, e.g., clicking on the portion using a mouse. Communication may then be initiated by the recipient with the entity associated with the electronic address.
Owner:TSAI MARY Y Y
Computer file comparison method
InactiveUS6236993B1Data processing applicationsDigital data information retrievalConsistency testUser input
A computer-implemented method and computer program product for comparing two data files to find matching data. The comparisons can be between dates, monetary units, or any other quantities. Comparisons are handled between files which differ by any predetermined function such as additive or multiplicative without using file wide delimiters, field boundary or field format information. An example of such a comparison are the additive differences resulting from aging files in a Year 2000 compliance testing method. The method can thus be used to test whether an effort to remediate a Year 2000 problem in a computer program was successful. Another example of such comparisons are the differences resulting from conversion between the monetary units of two countries or regions. The method can thus also be used to verify currency conversions. Data items are read from a first file and a second file and sequentially compared and, if a mismatch exists, it is determined whether the mismatch could be attributable to a difference in format, quantity, or both. An expected difference between two files may be input by a user of the program or may be automatically computed during operation.
Owner:FANBERG VICTOR V
Automatically expanding abbreviated character substrings
InactiveUS6934767B1Reduce character input problemReduce decrease2D-image generationCode conversionTheoretical computer scienceClient machine
A server machine receives an input string of characters from a client machine, and the string includes at least one abbreviated substring preceded and followed by word delimiters. Each abbreviated substring represents an expanded substring. The server machine automatically finds one of the abbreviated substrings based on the preceding and following word delimiters, determines that it is one of a set of abbreviated substrings, and produces an expanded version of the string of characters with the abbreviated substring replaced by its expanded substring. The case of the beginning character of the expanded substring can be the same as that of the abbreviated substring. The expanded substring can depend on time, such as the current time.
Owner:SYNCHRONOSS TECH
Methods and apparatus for storing and manipulating variable length and fixed length data elements as a sequence of fixed length integers
InactiveUS7178100B2Less transmission bandwidthEasy to handleData processing applicationsNatural language data processingArray data structureTheoretical computer science
Apparatus for storing and processing a plurality of data items each comprising supplied data values organized in one or more fields each of which stores typed data. Character strings and natural language text are converted to numerical token values in an array of fixed length integers and other forms of typed data (real numbers, dates, times, boolean values, etc.) are also converted to integer form and stored in the array. Stored metadata specifies the data type of all data in the integer array to enable each integer to be rapidly accessed and interpreted. When fixed length data types are present, the metadata specifies location, size and type of each fixed length element. When variable length data is stored in the integer array, size and location data stored in the integer array is accessed to rapidly and directly access the variable size data. The presence of implicit or explicit size information for each data structure, including variable size structures, speeds processing by eliminating the need to scan the data for delimiters, and by reducing the processing needed to perform memory allocation, data movement, lookup operations and data addressing functions. Data stored in the integer array is subdivided into items, and items are subdivided into fields. Items may be organized into more complex data structures, such as relational tables, hierarchical object structures, linked lists and trees, and the like, using special fields called links which identify other referenced items.
Owner:CALL CHARLES G
Dynamic generation of target files from template files and tracking of the processing of target files
ActiveUS20090183117A1Easy to createEasy to copyDigital data processing detailsNatural language data processingComputer usersDisplay device
Target file generation systems and methods are described, which are optionally for use by ordinary computer users enable those users to readily generate target files without the requirement that they know the internal layout structures of the target files. A user is enabled to select a template file from a plurality of template files via a user interface configured to be displayed on a computer display to the user, wherein the template files include changeable fields associated with corresponding field delimiters and prompting labels. An incomplete software program file containing variable name locations is accessed from memory. The program file is parsed to locate the variable name locations. The label names obtained from the template file selected by the user are inserted into the variable name locations to further complete the software program file. The software program file is stored in computer memory.
Owner:KNAPP INVESTMENT
Method and apparatus for linking designated portions of a received document image with an electronic address
InactiveUS6445468B1Special data processing applicationsPictoral communicationPattern matchingDocument preparation
A method and apparatus for receiving document images including portions linked to one or more electronic addresses. The linked portion of the document is identified using a predetermined visual attribute, such as bold-face text, or delimiters to mark the portion. The document image is then transmitted using, e.g., existing apparatus for transmitting images, such as a facsimile machine. An electronic address associated with the identified portion of the document is also transmitted using existing techniques, such as by touch-tone telephone. The address may be a voice telephone number, facsimile telephone number, World Wide Web address, or any other address with which communication can be established. At the receiving end, both the document image and electronic address are received. Pattern matching is performed on the document image to identify the portion with the predetermined attribute as a linked portion. The received electronic address is then correlated with the linked portion. When the document image is displayed on, e.g., a computer screen, the linked portion is visually identified so that the recipient can access the electronic address by, e.g., clicking on the portion using a mouse. Communication may then be initiated by the recipient with the entity associated with the electronic address.
Owner:TSAI IRVING
Method and apparatus for linking designated portions of a received document image with an electronic address
InactiveUS7016084B2Digital computer detailsCharacter and pattern recognitionPattern matchingDocument preparation
A method and apparatus for receiving document images including portions linked to one or more electronic addresses. The linked portion of the document is identified using a predetermined visual attribute, such as bold-face text, or delimiters to mark the portion. The document image is then transmitted using, e.g., existing apparatus for transmitting images, such as a facsimile machine. An electronic address associated with the identified portion of the document is also transmitted using existing techniques, such as by touch-tone telephone. The address may be a voice telephone number, facsimile telephone number. World Wide Web address or any other address with which communication can be established. At the receiving end, both the document image and electronic address are received. Pattern matching is performed on the document image to identify the portion with the predetermined attribute as a linked portion. The received electronic address is then correlated with the linked portion. When the document image is displayed on, e.g., a computer screen, the linked portion is visually identified so that the recipient can access the electronic address by, e.g., clicking on the portion using a mouse. Communication may then be initiated by the recipient with the entity associated with the electronic address.
Owner:TSAI IRVING
Method and system for high speed video encoding using parallel encoders
InactiveUS20060114995A1Increase speedColor television with pulse code modulationColor television with bandwidth reductionParallel computingVideo processing
In a video processing system, a method and system for high speed video encoding using parallel encoders are provided. A delimiter may break up a video sequence into encoding groups that are transferred to a plurality of parallel encoders. The parallel encoders may process and transfer intra-coded pictures in the encoding groups to previous parallel encoders or may process and transfer last predictive pictures to next parallel encoders. When intra-coded pictures are transferred, the encoding group may correspond to that of a GOP structure. When predictive pictures are transferred, the encoding group may end in at least one bidirectional-predictive picture. The parallel encoders process the transferred intra-coded pictures or transferred predictive pictures to generate a plurality of parallel outputs. An assembler assembles an encoded video output from the parallel outputs based on timing information. A controller controls the operation of the delimiter, the parallel encoders, and the assembler.
Owner:AVAGO TECH WIRELESS IP SINGAPORE PTE
Data transfer system and method, data transmitter, data receiver, data transmission method, and data reception method
ActiveUS20050147178A1Simple structureReduce componentsParallel/series conversionLogic circuits characterised by logic functionTransfer systemWord clock
The present invention provides a data transfer system including a data transmitter and a data receiver. The data transmitter converts a plurality of bits of transmission parallel data into serial data and generates a multi-level logic signal representing a plurality of bits of information in one symbol, the information being obtained by combining the serial data with a word clock as one-bit information. The word clock indicates a word delimiter in the serial data. The data receiver receives the transmitted multi-level logic signal, extracts the serial data and the word clock from the signal, and reproduces the parallel data based on the extracted word clock. In the data transfer system, a multi-bit digital signal can be transmitted as one signal including a word clock. Thus, components and mounting space to be allocated to transfer can be reduced.
Owner:SONY CORP
Calculation expression management
ActiveUS20070198538A1Easy to calculateDigital data information retrievalDigital data processing detailsGraphicsComplex calculation
The invention relates to calculation expression management. In general terms, a calculation expression is a union of variables, constants, operators functions, delimiter characters and other possible elements, which can be used to product a result. A sample calculation expression is as follows: “2*3+A*(2+B+C)”. The uses of calculation expressions include the creation of formulae, the formation of strings and the implementation of searches for databases. The invention facilitates the implementation of sophisticated calculation expressions. For said purpose, the invention consists in constructing and evaluating calculation expressions from graphical structures representing trees. The graphical structure scan be of various different types.
Owner:LINGUAVERSAL
System and method for text structuring and text generation
InactiveUS6941513B2Natural language translationSpecial data processing applicationsInterconnectionText processing
The present invention provides a computer-implemented system and method of text processing. The system and method include analyzing selected text units of a digitally coded parsed text file to determine text entities, determine the interconnections between the text entities, test the validity of the text entities, and determine a quantitative measure of the significance of each text entity. A multigranular relational text structure is constructed which incorporates the text entities. Output text is generated from the relational text structure using entity grouping rules. The text file is parsed using a system of natural dividers. The text units are selected from the parsed text file using windowing and scanning. The output text generated conforms to user constraints which can include the volume of output text to be generated, keywords to be reflected in the output text, and the level of generalization of the output text.
Owner:COGNISPHERE
System and method of message compression
ActiveUS20080109462A1Computer security arrangementsMultiple digital computer combinationsData storeCommunication device
A system and method for packaging electronic messages for delivery to a communication device is provided. Where the electronic message comprises at least one quoted parent message, the quoted parent message is identified by means of delimiters within the body of the electronic message, and the quoted message thus identified is replaced with an identifying instruction referring to an identifier corresponding to a previously received message comprising the quoted parent message. The edited electronic message is then transmitted to a recipient device, which uses the identifying instruction to reconstruct the original message by querying a data store using the identifier to locate a copy of the quoted parent message. If no quoted parent message is found, a request is issued by the recipient device to transmit a full version of the original electronic message.
Owner:MALIKIE INNOVATIONS LTD
Nondisruptive method for encoding file meta-data into a file name
InactiveUS20060259516A1Satisfies needPreserving abilityDigital data information retrievalSpecial data processing applicationsFunctional identificationFile system
A method and article of manufacture for encoding file metadata into a file name used in a computer system is disclosed. Metadata is added to an original file name and extension created by a user. The metadata may be in the form of a left padded, monotonically increasing number which operates similar to a time stamp. The file extension is then duplicated following a delimiter to preserve a user's ability to search for the original file name and extension, while maintaining functional identification of the file type to the operating and / or file system.
Owner:IBM CORP
Receiver for use in an ultra-wideband communication system
ActiveUS8437432B2Less powerModulated-carrier systemsOrthogonal multiplexChannel impulse responseBroadband
In an ultra-wideband (“UWB”) receiver, a received UWB signal is periodically digitized as a series of ternary samples. The samples are continuously correlated with a predetermined preamble sequence to develop a correlation value. When the value exceeds a predetermined threshold, indicating that the preamble sequence is being received, estimates of the channel impulse response (“CIR”) are developed. When a start-of-frame delimiter (“SFD”) is detected, the best CIR estimate is provided to a channel matched filter (“CMF”) substantially to filter channel-injected noise.
Owner:DECAWAVE
Message translation and parsing of data structures in a distributed component architecture
InactiveUS20050097566A1Efficiently parseEfficiently translateInterprogram communicationMultiple digital computer combinationsUser needsMessage structure
The present invention is related to systems and methods that parse and / or translate inbound messages into outbound messages such that disparate computer systems can communicate intelligibly. In one embodiment, a system recursively parses the inbound message such that relatively fewer outbound message structure definitions are required and advantageously decreases the usage of resources by the system. Further, one system in accordance with the present invention allows an operator to configure the identity of a delimiter in the inbound message. The delimiter can span multiple characters and includes the logical inverse of a set of delimiters. The outbound message can be accessed at nodes within a hierarchy, as well as at leaves. Thus, a user need not know the precise location of data within the outbound message. A set of updating rules further permits the updating of an outbound message without having to re-parse an entire inbound message.
Owner:ORACLE INT CORP
Packet transmission/reception method and apparatus in wireless communication system
ActiveUS20110199971A1Network traffic/resource managementWireless commuication servicesCommunications systemProtocol data unit
A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets which are to be transmitted to the respective users; and simultaneously transmitting the generated packets to the respective users. Each of the packets contains information on the position of a symbol to which a tail field of the packet belongs, and the information on the position of the symbol to which the tail field belongs includes at least one of the maximum symbol number of the packet, the symbol number of transmission data of the packet, positional information of a last aggregated MAC protocol data unit (A-MPDU) subframe, and positional information of a null delimiter.
Owner:ELECTRONICS & TELECOMM RES INST
Shared namespace for storage clusters
ActiveUS20100070515A1Digital data processing detailsFile access structuresUnique identifierClient-side
Any client application uses a namespace application to resolve its pathname in order to reference a computer file. Computer files are stored in a fixed-content storage cluster and are accessed by retrieving a unique identifier for the computer file using the namespace application. Any type of pathname scheme from any client application is supported by the namespace. The namespace application uses a bindings table to record bindings between objects including the start date and end date for each binding, and direction and separator data used in the pathname scheme. An attribute table in the namespace keeps track of each attribute and its value for each object of the namespace including a start date and an end date for each attribute. The namespace provides syntactic generality in that any pathname scheme of a client application can be resolved to identify a unique computer file in the storage cluster. The namespace may be shared between applications because when one application modifies a file or its attributes using the namespace, another application using a different pathname scheme has access to the exact same data and modifications. The namespace provides a near instantaneous continuous backup for computer files in the storage cluster because of the use of start date and end dates for the bindings and attributes.
Owner:DATACORE SOFTWARE
Apparatus and method of transmitting and receiving wake-up signal
ActiveUS20100150042A1Power consumption required to receive the wake-up signal can be reducedReduce power consumptionEnergy efficient ICTPower managementTime segmentEngineering
Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.
Owner:ELECTRONICS & TELECOMM RES INST
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