217 results about "Line code" patented technology

A lock/unlock mechanism to control concurrent access to objects in a multi-threaded computer processing system comprises two parts: a thread pointer (or thread identifier), and a one-bit flag called a "Bacon bit". Preferably, when an object is not locked (i.e., no thread has been granted access to the object), the thread identifier and Bacon bit are set to 0. When an object is locked by a particular thread (i.e., the thread has been granted access to the object), the thread identifier is set to a value that identifies the particular thread; if no other threads are waiting to lock the object, the Bacon bit is set to 0; however, if other threads are waiting to lock the object, the Bacon bit is set to "1', which indicates the there is a queue of waiting threads associated with the object. To lock an object, a single CompareAndSwap operation is preferably used, much like with spin-locks; if the lock is already held by another thread, enqueueing is handled in out-of-line code. To unlock an object, in the normal case, a single CompareAndSwap operation may be used. This single operation atomically tests that the current thread owns the lock, and that no other threads are waiting for the object (i.e., the Bacon bit is "0'). A global lock is preferably used to change the Bacon bit of the lock. This provides an lock/unlock mechanism which combines many of the desirable features of both spin locking and queued locking, and can be used as the basis for a very fast implementation of the synchronization facilities of the Java language.

A code inspection tool comprises a plurality of physical computing resources connected by a network facility, eg an LAN, intranet or internet, and a voice conferencing communications facility. The code inspection tool interfaces with a known configuration management system to load a quantity of original source code. A group of developers use a plurality of graphical user interfaces to inspect the code. All graphical user interfaces log into display views generated on a main graphical user interface, which is operated by a human controller of a code inspection session. The code inspection tool comprises means for allowing developers to compile annotation data and forward the annotation data from their respective graphical user interfaces to a centralized data store. Internal algorithms of the code inspection tool compile markers relating the annotation data files to individual lines of source code. During a code inspection session, all developers view a same display, which sets out original source code, side by side with new source code on a line by line basis, matching the line numbers of the original source code with those of the new source code. Changes to the original source code and new source code are visually identified by automatic generation of icons next to the appropriate source code lines on the display. Annotations to the source code lines are indicated by further icons next to the appropriate lines. The tool automatically generates data describing statistics of a code inspection process, for example number of lines inspected, during of a code inspection session, proportion of original and new code lines inspected. Code inspection reports may be generated in a variety of formats, eg plain text or HTML, and automatically distributed to individual developers over the networked facility.

A robotic architecture for capturing the autonomous performance advantages the animal models enjoy in the natural environment is disclosed. A biomimesis process is employed to allow selective utilization of basic physical components and adaptation of a common control paradigm for each of different vehicle types. The biomimetic architecture involves five functional elements: a basic biomorphic plant for capturing the biomechanical advantages of the model organism; a neural circuit-based controller consisting of a finite state machine; myomorphic actuators producing linear graded force in response to trains of current pulses for mediating movements; labeled line code output by neuromorphic sensors; and a reactive behavioral sequencer executing command sequences defined within a behavioral library.

A communication system including two endpoints (transceivers or a transmitter and receiver) and a serial link between them. At least one endpoint is configured to generate encoded data in accordance with a line code and to transmit the encoded data over the link. The line code specifies a block code for encoding cells of application data and control bits, and typically also special characters that do not match bit sequences of encoded cells. Other aspects of the invention are methods for generating (and endpoint devices configured to generate and transmit, or receive and process) such encoded data, and methods for performing functions of multiple layers of a communication protocol in response to such encoded data. In accordance with the invention, multiple levels of communication protocol functionality can be efficiently incorporated within a line code.

The current invention provides a digital signal processor which supports multiple X-DSL protocols and a multiplicity of channels on a single chip. Each channel is packetized and each packet includes control information for controlling the performance of the components/modules on the transmit and receive path. Further flexibility is derived from an architecture which incorporates discrete and shared modules on the transmit path and the receive path. The transmit path and receive path modules are collectively controlled by control information in selected ones of the packets and operate on each channel's packets at an appropriate rate, and protocol for the channel. A digital signal processor (DSP) is disclosed which incorporates these features. The DSP exhibits a favorable form factor, and flexibility as to protocols and line codes, and numbers of channels supported.

A method of obfuscating executable computer code to impede reverse-engineering, by interrupting the software's execution flow and replacing in-line code with calls to subroutines that do not represent logical program blocks. Embodiments of the present invention introduce decoy code to confuse attackers, and computed branching to relocated code so that actual program flow cannot be inferred from disassembled source representations.

The embodiment of the invention provides a method for sending and receiving data without changing data rate. The sending method comprises the following steps: performing line coding on Ethernet data and detecting the inter-frame interval of to-be-sent Ethernet data; extracting free control blocks from the inter-frame interval of the Ethernet data within a preset data length; inserting a preset length of data into the to-be-sent data by taking the preset data length as a cycle, wherein the preset length of data consists of free control blocks of synchronous character identifiers; scrambling the to-be-sent data, wherein synchronous identifiers of each data block are not scrambled; and identifying the data blocks in the preset length of data, replacing at least one data block with a channel alignment character and sending the data completing the replacement of the channel alignment character. The invention also discloses a data-ending method, as well as a device and a system for implementing the same.

A device for depositing a wipe-proof and rub-proof marking or code marking, in particular a two-dimensional matrix or line coding onto glass receptacles such as glass ampoules, glass bottles, vials and likewise, comprises a transport means having a drive, with one or more accommodating devices for objects to be inscribed, a laser system arranged at a distance to the transport means with a laser source for producing a laser light beam of a wavelength <380 nm, said laser light beam in operation being directed onto the transport path and defining an impingement point in the region of at least one accommodating means moved along the transport path, means in order to deflect the laser light beam in a first and in a second direction continuously or in certain incremental intervals, and at least one control unit comprising a memory unit and a microprocessor which is in connection with the laser system and the deflection means, for controlling at least the deflection system and the laser system. The device further comprises a transport means designed for the transport of glass receptacles to be marked, along a transport path, a means for detecting or determining at least the position of at least one accommodating means or a glass receptacle accommodated therein at least one position along the transport path, said means being in connection with the control unit, and a program stored in the memory unit, which triggers the laser in dependence on the position of the glass receptacle to be inscribed, as well as at least one marking pattern, according to which the deflection means for writing the 2D marking is moved in a first and in a second direction. A read means is provided or arranged at a defined read position along the transport path after the laser system in the transport direction, for detecting the marking previously written by the laser system, said read means being in connection with the control unit. In the control unit there is further present a program or a program procedure which compares the stored marking pattern to the marking detected by the read means and provides a control signal in dependence on the result of the comparison, at the output of the control unit.

The invention relates to a high-precision time-delay precompensation optical fiber timing method which comprises the following steps of: firstly, extracting a PPS (Pulse Per Second) signal from a received line code stream and outputting by a terminal station; circularly returning the received line code stream to a center station; recovering the PPS signal from the circularly returned line code stream by the center station; measuring a time interval between a sending PPS and a recovered PPS; subtracting a bidirectional time delay of terminal equipment to acquire an optical fiber link bidirectional transmission time delay; calculating a one-way time delay from the center station to the terminal station; and adding a one-way time delay value of the terminal equipment to acquire a precompensation time delay. The precompensation value is used as a precompensation time delay of the next PPS and coded before the next PPS is sent to the terminal station. The invention has the advantages of uniform reference and high stability and is easy to simultaneously ensure the long-term stability and the short-term stability of time transmission.

A visible light wireless communication receiver includes: a source code recognizing unit that receives a source bit stream and recognizes the source bit stream as source codes of a unit of a first number of bits; and a line coding unit that encodes each of the source codes into an encoding code of a unit of a second number of bits, the second number being larger than the first number. In particular, in the encoding code, the number of bits corresponding to 1 is the same as the number of bits corresponding to 0. Therefore, the change in brightness of lighting may be minimized in the visible light wireless communication.

A method and system for reverting a process in an in-line instrumented state to an uninstrumented state. In one embodiment, the present invention modifies selected text segment portions from the process to be uninstrumented. The present embodiment then unmaps instrumented code space such that the instrumented code space is inaccessible to the process. In this embodiment, the present invention also cleans a call stack of the process by unwinding the call stack and resetting the storage locations for return pointers from the instrumented code space to uninstrumented code space.

The invention seeks to provide an improved, bandwidth-efficient method and apparatus for acquiring and tracking bursts of data, or continuous data, of varying and unpredictable amplitude, extinction ratio, and phase. The system avoids the use of digital signal processing which is not practical at high data signal rates. The system also obviates encoding of the data signal using a line code, thereby extending the existing technology to give a significant increase in data throughput for the same available bandwidth. The system may treat acquisition of each data burst, comprising alternate synchronisation parts and data parts, ab initio.

The invention discloses an embedded system data compression and decompression method based on BP neural network, which comprises the following steps: 1). Choice of the type of neural network; 2). The structure of the mapping relation; 3). Data compression of each standard string on a PC based on BP neural network; 4). Data decompression in the embedded system based on BP neural network; 5). To write the standard strings get from decompression in decompressed data file in turn; 6). To delete all special characters occurring at the end of the file. The invention has the advantages of simulating the mapping relation between line code and line data using neural network, meeting the purpose of data compression through using the information occupying less signal space to express the information occupying more signal space, breaking through the limit of traditionally only depending upon coding to lower data redundancy, realizing higher compression ratio, repeating multiple data compression to reach satisfactory compression ratio, effectively compressing compressed data with entropy coding and further improving compression effect.

The invention provides an estimation method of a passenger trip spatial-temporal trajectory of an urban rail transit network. The method comprises the following steps: according to trip state characteristics of passengers in the urban rail transit network, constructing a rail transit super network based on a trip chain, including a network layer, a path layer and a station layer; using WIFI signal data within the scope of the urban rail transit network, and adopting a positioning algorithm based on a received signal strength indication to convert the WIFI signal data into position coordinates of the passengers in the station which are changed over time; based on the correspondence between the position coordinates of the passengers and a station plan, realizing the reduction of walking trajectories in the station; and determining passing stations by identifying the changes in line codes and station codes in passenger position information, and after checking an effective path set in the path layer, realizing the inference of the passenger network travel spatial-temporal trajectory. The estimation method of the passenger trip spatial-temporal trajectory of the urban rail transit network provided by the invention can meet the requirement of positioning accuracy and effectively reduce the walking trajectories of the passengers, and provide a theoretical and technical support for passenger flow analysis, ticket clearing and trip guidance and so on of the urban rail transit network.

The execution mode of the invention discloses a method for coding data, which is to add additional synchronous heads to data subjected to line coding and FEC coding and then send the data through framing. The execution mode of the invention also provides a corresponding method for decoding the data, a data coder and a data decoder. With the addition of redundant information used for synchronization, the execution mode of the invention can also ensure the synchronous performance of a transmission system under the condition that the line coding selects an algorithm with smaller redundancy; besides, the additionally added synchronous heads do not take part in the FEC coding computation to ensure that the coding gain of the FEC is not affected.

To accommodate the overlay of broadband information over narrowband bearers while reducing cross-talk in upstream and downstream directions, different baseband line codes are used to modulate respective upstream and downstream transmissions on a common wireline communication resource, such as a twisted copper-pair. In this way, filtering components located at each end of a connection can reject cross-talk based upon dissimilar signal characteristics that arise between wanted broadband signals having a first baseband line code and spectrally-shifted cross-talk emanating from interfering broadband signals having a different baseband line code.

A bus interface for transfer of SONET/SDH data that supports a plurality of SONET/SDH flows. The invention supports two line coding schemes: 8B/10B encoding of STS-12, and SONET scrambled coding for STS-12, STS-48, and STS-51. The invention additionally supports two modes of line testing: entire links can be tested by inserting and checking PRBS sequences, and the SPE payload of the largest concatenated STS-Nc which the link can carry (STS-12c, STS-48c, STS-51c) can be individually tested by inserting and checking PRBS sequences.

The invention discloses a method and equipment for obtaining a code coverage rate. The method comprises the steps of testing code coverage rates of a plurality of source code files of a test object, obtaining an executed code line number and a total compiled code line number during testing, and calculating the line code coverage rate of the test object by dividing the executed code line number by the total compiled code line number. According to the method and the equipment, the line code coverage rate is calculated by the executed code line number and the total compiled code line number, so that the test activity extent can be fed back more clearly, and which codes not tested can be shown precisely.

The invention provides a method for transmitting visible light communication data. The method for transmitting the visible light communication data comprises the steps that a data packet in a network is obtained, wherein data in the data packet are parallel data; the data packet is cached to a preset storage position, the data packet is obtained from the storage position and is divided into at least one sub data packet, the data are converted into serial data, line coding is conducted on each sub data packet according to preset line codes, and each sub data packet is transmitted to a controller of an LED lamp so that the controller can control a lamp tube of the LED lamp to be turned on or turned off according to the serial data. According to the method for transmitting the visible light communication data, the data packet obtained in the network is divided into the sub data packets, so that the volume of data contained in each sub data base is small, and the method is suitable for channel transmission for visible light communication of a single line; the data in each sub data packet are made to be adapted to the low-pass characteristic of a channel for visible light communication through line coding, and the transmission accuracy is improved. By the adoption of the method for transmitting the visible light communication data, data information in the network can be obtained in real time, and data information in the network is transmitted in real time according to the visible light communication technology.

A system and method are provided to detect an extended error burst in a data interface. An original error burst has a given length prior to or during transmission. Data transmission processing can extend the original error burst beyond its original length to become an extended error burst with an effective length greater than the original error burst length. Such data transmission processing can include: de-interleaving data on a multi-lane data interface; feedback from a Decision Feedback Equalizer (DFE) receiver; and/or block line decoding, such as 8B/10B block line code decoding. An extended error burst detector can include a suitable error detecting code, such as an r-bit cyclic redundancy check (CRC) code developed in relation to known extended error burst patterns, to detect all extended error bursts based on an up to r-bit original error burst. The detector can also detect error bursts that are not extended beyond the original error burst length.

The invention relates to the technology of codes and provides an on-line code inspection system and method. The problem that in current code inspection, code inspection personnel and code development personnel cannot communicate with each other well, so that inspection efficiency is low is solved. According to the technical scheme, the on-line code inspection system is characterized in that an interaction client side and the code inspection system are included and are connected, and the code inspection system comprises a code inspection list management module, a comparing file generator module, a version management tool agency module and a postil information management module. The on-line code inspection system and method have the advantages that efficiency and effect of code inspection are improved, and code inspection can be well achieved.