434results about How to "Reduce hardware complexity" patented technology

A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and audio processor including a 3D graphics pipeline and an audio digital signal processor. The graphics pipeline renders and prepares images for display at least in part in response to polygon vertex attribute data and texel color data stored as a texture images in an associated memory. An efficient texturing pipeline arrangement achieves a relatively low chip-footprint by utilizing a single texture coordinate / data processing unit that interleaves the processing of logical direct and indirect texture coordinate data and a texture lookup data feedback path for “recirculating” indirect texture lookup data retrieved from a single texture retrieval unit back to the texture coordinate / data processing unit. Versatile indirect texture referencing is achieved by using the same texture coordinate / data processing unit to transform the recirculated texture lookup data into offsets that may be added to the texture coordinates of a direct texture lookup. A generalized indirect texture API function is provided that supports defining at least four indirect texture referencing operations and allows for selectively associating one of at least eight different texture images with each indirect texture defined. Retrieved indirect texture lookup data is processed as multi-bit binary data triplets of three, four, five, or eight bits. The data triplets are multiplied by a 3×2 texture coordinate offset matrix before being optionally combined with regular non-indirect coordinate data or coordinate data from a previous cycle / stage of processing. Values of the offset matrix elements are variable and may be dynamically defined for each cycle / stage using selected constants. Two additional variable matrix configurations are also defined containing element values obtained from current direct texture coordinates. Circuitry for optionally biasing and scaling retrieved texture data is also provided.

A vibration data collection system performs an integration or differentiation process on incoming digitized vibration data in real time. The system uses a digital Infinite Impulse Response (IIR) filter running at the input data rate to provide the integration or differentiation function. With this approach, the system reduces hardware complexity and data storage requirements. Also, the system provides the ability to directly integrate or differentiate stored time waveforms without resorting to FFT processing methods.

A multiple function atmospheric pressure ion source interfaced to a mass spectrometer comprises multiple liquid inlet probes configured such that the sprays from two or more probes intersect in a mixing region. Gas phase sample ions or neutral species generated in the spray of one probe can react with reagent gas ions generated from one or more other probes by such ionization methods as Electrospray, photoionization, corona discharge and glow discharge ionization. Reagent ions may be optimally selected to promote such processes as Atmospheric Pressure Chemical Ionization of neutral sample molecules, or charge reduction or electron transfer dissociation of multiply charged sample ions. Selected neutral reagent species can also be introduced into the mixing region to promote charge reduction of multiply charged sample ions through ion-neutral reactions. Different operating modes can be performed alternately or simultaneously, and can be rapidly turned on and off under manual or software control.

A data flow egress scheduler and shaper provides multiple levels of scheduling for data packets exiting communications devices. A classifier separates data from multiple sources by data flow and by priority within a data flow. An output controller requests a data packet for transmission and the scheduler selects a next available highest priority packet from a next in sequence data flow or from a management data queue. The shaper can control the rates of classes of service to be scheduled by the device. The scheduler typically comprises three levels of scheduling. Large numbers of output ports can be implemented in a single device by a virtual scheduler that services each data flow, output port and data source as a shared component, maintain context for groups of schedulers and data flows.

A high-speed, low-complexity Reed-Solomon (RS) decoder architecture using a novel pipelined recursive Modified Euclidean (PrME) algorithm block for very high-speed optical communications is provided. The RS decoder features a low-complexity Key Equation Solver using a PrME algorithm block. The recursive structure enables the low-complexity PrME algorithm block to be implemented. Pipelining and parallelizing allow the inputs to be received at very high fiber optic rates, and outputs to be delivered at correspondingly high rates with minimum delay. An 80-Gb / s RS decoder architecture using 0.13-μm CMOS technology in a supply voltage of 1.2 V is disclosed that features a core gate count of 393 K and operates at a clock rate of 625 MHz. The RS decoder has a wide range of applications, including fiber optic telecommunication applications, hard drive or disk controller applications, computational storage system applications, CD or DVD controller applications, fiber optic systems, router systems, wireless communication systems, cellular telephone systems, microwave link systems, satellite communication systems, digital television systems, networking systems, high-speed modems and the like.

An adaptive demosaicing method interpolates images based on color edge detection and neighborhood voting. The adaptive demosaicing algorithm uses a voting scheme to determine the direction of interpolation at each missing luminance pixel location. Each color plane votes either horizontal or vertical based on a comparison between the horizontal and vertical components of the degree of change (i.e., gradient, Laplacian or other measure of the degree of change) in that color plane. Votes are counted from the neighborhood pixels as well as from measurements taken at the pixel location itself. Once the luminance plane is fully interpolated, the chrominance planes are filled in by simple bilinear or median interpolation of difference chrominance values. Enhancements to the adaptive demosaicing algorithm permit adaptive smoothing and sharpening.

A radar sensor for a motor vehicle has at least one antenna arrangement for transmitting and receiving radar signals and a controller for controlling the operation of the antenna arrangement. The controller evaluates the received radar signals. The controller also operates the antenna arrangement to transmit and / or receive messages in a car-to-car communication.

The control course includes three stages: setting up connection and safety performance bargin as broadcasting connection request by STA and all AP at the area to send connection response message declaring all data protective method to STA; setting up safe correlation a sending 802.1x authentication request message to AC by AP after STA safe correlation request received to request AC to use 802.1x authentication protocol to make authentication for STA by AS; resetting up safe correlation as switching the correlative switch in point from one area to another by STA as well as setting up connection and bargaining safety performance by STA and AP* as per steps in the first stage under the roaming condition with AP* service range being entered by STA.

An address translation unit is provided for use in a computer system. The unit contains a set of page table entries for mapping from a virtual address to a packet address. Each page table entry corresponds to one page of virtual memory, and typically includes one or more specifiers. Each specifier relates to a different portion of the page, and maps from that portion of the page to a corresponding range of packet addresses. Accordingly, the unit allows for address translation to be performed with a sub-page granularity.

The invention discloses an industrial robot capturing method based on a monocular camera and a three-dimensional force sensor. The method comprises the steps that the monocular camera and the industrial robot are calibrated, and the three-dimensional force sensor is initialized; the monocular camera acquires an object image, an upper computer conducts image processing and calculates the position information of an object, the robot is controlled to move to a position above the object according to the position information, and then the robot moves downwards vertically till making contact with the object to be captured; the three-dimensional force sensor senses the contact force information between the tail end of the robot and the surface of the object, the upper computer controls the industrial robot to stop moving according to contact force information and calculates the pose increment of the tail end of the robot, the posture of the robot is adjusted according to the pose increment till a pneumatic sucker at the tail end of the robot is attached to the plane of the object to be captured, and the pneumatic sucker acts to achieve capturing. By the adoption of the method, objects placed obliquely in a messy mode can be captured, and complexity of camera calibration and object space pose estimation is reduced.

A reconfigurable apparatus with a high usage rate in hardware is disclosed, which comprises at least one reconfigurable unit that has a plurality of processing units and at least one switch box connected to the processing units. The reconfigurable unit receives at least one reconfiguration signal to dynamically configure the processing units and the switch boxes as a new functional unit.

An apparatus for switchable conditional execution in a VLIW processor is provided, comprising one or more decoders, one or more ALU with control units, and a register file. The decoders loads and decodes said instructions from a fetch unit for decoding and sending the decoded instructions to the ALU with control units for execution. The register file stores and forwards the results on result buses to the decoders. The execution of a VLIW instruction includes a fetch stage, a decode stage, plural execution stages and a write-back stage. The invention has the features of approximate ASIC timing by conditional write-back with the compiler support for the conditional write-back, condition resolved just before write-back., software selective conditional issue and conditional write-back modes, and without hardware interlock / dependence checking for the VLIW processor.

The invention discloses a periodic amplitude control-based phased-array antenna system. The periodic amplitude control-based phased-array antenna system comprises a plurality of phased-array antenna unit passages, a combiner, a power divider, a frequency converter unit and a medium frequency band pass filter unit, wherein each phased-array antenna unit passage comprises an antenna, a first radio frequency band pass filter, a duplexer, a variable gain amplifier unit, a second radio frequency band pass filter and an amplifier control unit; and the amplifier control unit periodically controls the gain of the variable gain amplifier unit. The invention also discloses a wave beam control method of the periodic amplitude control-based phased-array antenna system. By periodically controlling the amplitude of a transmitted / received radio frequency signal, combined control over the amplitude and the phase of the phased-array antenna system is realized, and directional diagram synthesis and adaptive wave beam formation of a phased-array antenna array can be realized without using a phase shift device; and the periodic amplitude control-based phased-array antenna system can be widely applied to systems requiring flexible wave beam control such as phased-array radar and electronic countermeasure.

One aspect of the present invention relates to a new alternative to the Bayer pattern for spatial subsampling in color imaging applications. One aspect of the present invention relates to a new design paradigm for spatio-spectral sampling, which is also described. The proposed scheme offers the potential to significantly reduce hardware complexity in a wide variety of applications, while at the same time improving output color image quality. According to another aspect, it is realized that conventional processing techniques are subject to diminishing returns, and with the exception of the most sophisticated processing techniques generate imperfections perceptible to a practiced eye. According to one aspect, a framework for CFA design in presented. In one embodiment the physical characteristics of the CFA are generated so that the spectral radii of luminance and chrominance channels are maximized. In another embodiment, the CFA designed to subject to the conditions of perfect reconstruction. In one aspect, the physical characteristics of CFA design are constrained to require physically realizable CFA(s). Alternatively, certain physical characteristics can be emphasized to generate easier to manufacture CFA(s). According to another aspect, conventional methods and systems are evaluated, confirming shortcomings regarding aliasing in imaging and bandwidth, against which certain embodiments are benchmarked, showing improved performance under at least some embodiments of proposed designs and methods. According to another aspect, a display device CFA is evaluated in terms of throughput of stimuli as limited by aliasing. It is shown the spectral replicas of the chrominance signals induced by existing CFA patterns are centered around frequencies that are not sufficiently far from the DC, consequently overlapping with the luminance signal spectrum and reducing the throughput of the stimuli. By reinterpreting the interactions between the stimuli, display CFA, and CSF in terms of amplitude modulation, an alternative CFA coding scheme that modulates the chrominance signals to a higher frequency relative to common schemes is provided in some embodiments.

A graphics system including a custom graphics and audio processor produces exciting 2D and 3D graphics and surround sound. The system includes a graphics and audio processor including a 3D graphics pipeline and an audio digital signal processor. The graphics pipeline renders and prepares images for display at least in part in response to polygon vertex attribute data and texel color data stored as a texture images in an associated memory. An efficient texturing pipeline arrangement achieves a relatively low chip-footprint by utilizing a single texture coordinate / data processing unit that interleaves the processing of logical direct and indirect texture coordinate data and a texture lookup data feedback path for “recirculating” indirect texture lookup data retrieved from a single texture retrieval unit back to the texture coordinate / data processing unit. Versatile indirect texture referencing is achieved by using the same texture coordinate / data processing unit to transform the recirculated texture lookup data into offsets that may be added to the texture coordinates of a direct texture lookup. A generalized indirect texture API function is provided that supports defining at least four indirect texture referencing operations and allows for selectively associating one of at least eight different texture images with each indirect texture defined. Retrieved indirect texture lookup data is processed as multi-bit binary data triplets of three, four, five, or eight bits. The data triplets are multiplied by a 3×2 texture coordinate offset matrix before being optionally combined with regular non-indirect coordinate data or coordinate data from a previous cycle / stage of processing. Values of the offset matrix elements are variable and may be dynamically defined for each cycle / stage using selected constants. Two additional variable matrix configurations are also defined containing element values obtained from current direct texture coordinates. Circuitry for optionally biasing and scaling retrieved texture data is also provided.

A multiple function atmospheric pressure ion source interfaced to a mass spectrometer comprises multiple liquid inlet probes configured such that the sprays from two or more probes intersect in a mixing region. Gas phase sample ions or neutral species generated in the spray of one probe can react with reagent gas ions generated from one or more other probes by such ionization methods as Electrospray, photoionization, corona discharge and glow discharge ionization. Reagent ions may be optimally selected to promote such processes as Atmospheric Pressure Chemical Ionization of neutral sample molecules, or charge reduction or electron transfer dissociation of multiply charged sample ions. Selected neutral reagent species can also be introduced into the mixing region to promote charge reduction of multiply charged sample ions through ion-neutral reactions. Different operating modes can be performed alternately or simultaneously, and can be rapidly turned on and off under manual or software control.

The invention relates to the technical field of on-chip multi-processor system structure, aiming at providing an implementation method of a rename table of a global register under on-chip multi-processor system framework. The method comprises the steps: designing the rename table of the global register; processing the dependency relationship 'writing-after-writing' of command; processing the dependency relationship 'writing-after-reading' of command; acquiring operand; writing back results; and submitting the command. As the rename table of the global register is used by the method, the dependency relationship of the commands of different processors can be recorded, and the dependency of 'writing-after-reading' and 'writing-after-writing' can be solved; the operand of the commands of the different processors can be maintained and transmitted through the rename table of the global register, so that the internuclear communication volume can be reduced; as hardware configuration used by the rename table of the global register is a logical table, the structure is simple, the complexity of hardware is low, the area of the rename table of the global register is only 1% of that of one on-chip processor, and tiny area cost is caused.

Signal processing architectures for direct acquisition of spread spectrum signals using long codes. Techniques are described for achieving a high of parallelism, employing code matched filter banks and other hardware sharing. In one embodiment, upper and lower sidebands are treated as two independent signals with identical spreading codes. Cross-correlators, in preferred embodiments, are comprised of a one or more banks of CMFs for computing parallel short-time correlations (STCs) of received signal samples and replica code sequence samples, and a means for calculating the cross-correlation values utilizing discrete-time Fourier analysis of the computed STCs. One or more intermediate quantizers may optionally be disposed between the bank of code matched filters and the cross-correlation calculation means for reducing word-sizes of the STCs prior to Fourier analysis. The techniques described may be used with BOC modulated signals or with any signal having at least two distinct sidebands.

The invention discloses a VHF (very high frequency) frequency-range intracloud lightning detecting and positioning system, which comprises a central treatment station and a plurality of detection and treatment sub-stations arranged in different positions, wherein the detection and treatment sub-stations and the central treatment station are accessed into a public wide area network in a wired or wireless mode; and through the wide area network, on one hand, obtained intracloud lightning detection data is uploaded to the central treatment station by the detection and treatment sub-stations, andon the other hand, the working state of each detection and treatment sub-station is remotely monitored by the central treatment station. The system can be used for precisely estimating the incidence directions of lightning radiation signals of a plurality of simultaneously occurring lightning radiation sources or the same lightning radiation source arriving at the detection sub-stations through different propagation paths, the arriving time difference of the lightning signals between any two detection and treatment sub-stations is calculated at the central treatment station (TDOA estimation),and the spatial position of an intracloud lightning radiation source is determined by DOA and TDOA information.

A method of data encoding is disclosed. An encoder receives a set of information bits and performs a lifted LDPC encoding operation on the information bits to produce a codeword. The encoder then punctures all lifted bits of the codeword that correspond to one or more punctured base bits of a base LDPC code used for the LDPC encoding operation. The base LDPC code has no multiple edges, and the one or more punctured base bits are those that correspond with one or more punctured base nodes, respectively, of the base LDPC code. For some embodiments, the one or more punctured base nodes correspond to one or more degree 2 variable nodes.

Provided are a receiving apparatus and method for a wireless communication system using multiple antennas. A receiving method for a wireless communication system using multiple paths, the receiving method comprising: receiving signals through a predetermined number of multiple paths; sensing a carrier according to saturation state degrees of the signals, and providing saturation state information; calculating automatic gain components of the received signals by using the received signals and the saturation state information of the received signals; and performing a noise matching process to amplify noises on the predetermined multiple paths according to the automatic gain components during a predetermined period.

An auxiliary wireless communication mechanism is incorporated into a system that geolocates tagged objects within a monitored environment, using random, repetitive spread spectrum emissions from the tags. The emissions are detected at tag emission readers, and processed by an object location processor to geolocate the tagged objects. The auxiliary wireless communication mechanism transmits a return spread spectrum signal containing information intended for a tag immediately in response to the object location processor geolocating the tag. This immediately returned spread spectrum transmission allows a reduced complexity spread spectrum receiver within the tag to despread the return signal without having to determine the timing of the clock signal used to produce it.

The invention discloses a low-complexity hybrid precoding method in a millimeter wave large-scale MIMO system. In the method, the minimum F norm is got between corresponding positions of a precoding scheme corresponding to each radio frequency link and partially connected with a hybrid precoding scheme and an optimal digital precoding scheme under the condition of not considering the radio frequency link, and thus a digital precoding matrix and an analog precoding matrix of each radio frequency link are got via computation. The phase of the analog precoding matrix of each radio frequency linkis the phase of a maximum singular value vector of the optimal digital precoding matrix, the real part of a digital precoding matrix element is the product of conjugate transpose of the analog precoding matrix and the real part of an optimal digital precoding vector at a corresponding position, and the imaginary part of the digital precoding matrix element is the product of the conjugate transposeof the analog precoding matrix and the opposite number of the imaginary part of the optimal digital precoding vector at the corresponding position. Compared with analog precoding, the method providedby the invention can acquire the higher system accessibility and speed with the lower algorithm complexity.

There is provided a cell search apparatus and method in a mobile communication system. The cell search apparatus is slot time-synchronized by receiving a first synchronization code in each slot of a P-SCH frame and in addition receives over the slots of an S-SCH frame a base station group specific code representing one of base station groups and a base station specific code representing one of base stations in the base station group. In the cell search apparatus, a base station group specific code detecting unit detects the base station group specific code received on the S-SCH in the slot-synchronized state, and a base station specific code detecting unit detects a transmitting base station by detecting the base station specific code received following the base station group specific code.

The invention relates to a sensorless brushless DC motor commutation deviation fast correction control system and a method. An analytical equation between the bus current difference before and after commutation and commutation deviation is derived according to the bus current fluctuation value before and after commutation. In view of the influence of commutation ripple and motor three-phase winding asymmetry on the accuracy of sampled current during actual bus current sampling, a method for current offset sampling in the same conduction zone is designed. The bus current difference is obtained according to the designed current sampling method, the commutation deviation is calculated based on the analytical equation, and the commutation signal is compensated and corrected in real time. By designing the sensorless motor commutation deviation fast correction control system, the commutation deviation convergence time is reduced greatly, and the commutation precision is improved.

The invention discloses an RSS-based LED positioning system and method, and relates to the field of LED communication and indoor positioning application. The RSS-based LED positioning system comprises at least three sending ends and one receiving end. Each sending end comprises a T-shaped bias device and an LED. The sending ends add PN code sequences before data to be transmitted, and the sequences are converted to visible light for emitting through the T-shaped bias devices and the LEDs; a photo-detector at the receiving end detects visible light signals and converts the visible light signals into electric signals, one FFT unit performs FFT transformation on the electric signals, other FFT units are used for FFT transformation of each PN code, a multiplier performs convolution multiplying on a result and an FFT operation result of each PN code, each product carries out IFFT transformation, a comparison circuit is used for finding out a peak value of time domain signals, and a power-distance conversion module estimates the value of a distance between the receiving end and each LED and outputting the value. According to the invention, multiple orthogonal PN codes are sent for distinguishing different LED sources, such that the hardware complexity of the sending ends is reduced, and the LED bandwidth is decreased.

A compact BCH parallel decoding circuit which supports preview search works on a finite field GF(2<13>). The parallel decoding circuit comprises a syndrome arithmetic circuit(1), a realizing circuit(2)with multiple shoots in one round for IBM wrong position multinomial iterative computation in the finite field GF(2<13>), a wrong address search circuit(3) provided with a totally combined logic pre-search module and a multifunctional configurable data interface(27)of an encoder. Compared with prior art, the decoding circuit has the advantages that the hardware is of low degree of complexity, the circuit area is compact and the decoding circuit is low in cost; data throughput is high and wrong address research is quick; the interface is simple in design and is practical and multi-functional; correcting performance can be flexibly configured according to the length of the check element and is free from the change of the code length.

The invention provides a quasi-cyclic low-density odd-even check convolution code coding-decoding system and a coding-decoding method thereof and belongs to the technical field of digital signals, wherein the system comprises a code word constructor, a coder module and a decoder module; and the code word constructor generates check mother matrixes, transfers the corresponding information such as data access addresses and translocation factors to the coder module and the decoder module respectively and stores the information in the respective mother matrix memory cells, the coder module obtains the input data from the information source and transfers the coded output data to a channel, and the decoder module obtains the input information from the channel and outputs the decoded information. By adding the quasi-cyclic unit matrixes, the system achieves the better decoding performance by less iterations so that the hardware cost is obviously reduced; the quasi-cyclic unit matrixes adopt the low-density check code structure, and the concurrent operation can be performed in both coding and decoding process so that the decoding clock delay is effectively reduced, and the throughput rateis greatly improved.

Methods and systems are provided for reducing fueling errors resulting from pressure pulsations in a port injection fuel rail. The pressure pulsations result from pressure pulsations generated in a high pressure fuel pump delivering fuel to both the port injection fuel rail and a direct injection fuel rail. A center of a port injection fuel pulse is positioned on an average pressure-crossing of the pressure pulsations so as to cancel out the effect of the over-average and under-average pressure pulsations.

The invention relates to a combined navigation method based on polarization information. The combined navigation method comprises the following steps: firstly, checking astronomical ephemeris according to carrier positions and moments so as to obtain sun position information; secondly, measuring by using a polarization sensor so as to obtain polarization information, and measuring speed information by using a light stream sensor; thirdly, on the basis of polarization and light stream, establishing a filtering measuring model; and finally, estimating navigation error information by using a kalman filter. By adopting the combined navigation method, a linear measuring model based on single-polarization sensor is established, and the model is simple, small in filtering calculation amount, high in precision and applicable to autonomous navigation of the carrier for a relatively long time.