62results about How to "Reduce transmission capacity" patented technology

In a wireless base station comprising a center unit, and a remote unit provided with an array antenna and connected to the center unit through an optical fiber, the center unit outputs to the optical fiber a transmission signal in a base band state prior to array processing, the remote unit performs the array processing of transmission signals in accordance with array weights and converts the transmission signals into RF signals, thereby to localize the compensation for transmission signal deviations occurring among the antenna elements on the remote unit side.

A transmission system omits blanking signals from vertical and horizontal synchronizing signals for video data while securing synchronized transmission between a transmission side and a reception side. To achieve this, the transmission system transmits first synchronizing data (HV) for identifying vertical synchronization, second synchronizing data (HDp) for identifying and synchronizing an effective video line, pixel data for the effective video line, a required digital audio signal, and auxiliary control data. The transmission system can reduce a transmission capacity, optimize a transmission format for optical wireless transmission, and decrease a transmission speed.

A method of and mobile station for route guidance for a user including a processor and a directional indicator which provides a reference direction, with the mobile station connecting to an on-line service with an electronic database containing geographic information and mobile position. Local position and destination is transmitted to the on-line service to request route guidance data.The on-line service processes the data as a function of branching of a total route to the user's destination as route sections and transmits a specification of direction and destination name for each route section destination to the mobile station.The processor processes the specification of direction and reference direction to define a target direction of a current route section destination and displays the target direction and route guidance data of the current route section destination and guidance data of at least one upcoming stage of the route.

A control device for a vehicle power transmission device including an electrical differential motion portion in which a differential state between input shaft rotation speed and output shaft rotation speed is controlled through control of the operation state of an electric motor linked to a rotating element of a differential motion portion, and a power connection-disconnection device constituting a portion of a power transmission path, includes a controller that lessens a transmission capacity of the power connection-disconnection device if during a switch of the state of the vehicle power transmission device from a non-driving state to a driving state, a change in input torque to the vehicle power transmission device occurs, in comparison with when the change in the input torque does not occur. Therefore, the control device reduces the shift shock when the vehicle power transmission device is switched from the non-driving to the driving state.

The multi-core optical fiber comprises cores embedded in common cladding, with each core containing a dopant. A "peculiar" one of the cores has a central zone that is not doped by the dopant, the other cores all being completely doped by the dopant, thereby enabling the peculiar core to be used as a local reference point in order to locate the cores of the optical fiber individually.

Method to synchronize at least one mobile unit to at least one base transceiver station belonging to a digital telecommunication network, in which radio signals transmitted and received by said base station are subdivided in frames (Fn) having pre-determined duration and each frame is subdivided in a pre-determined number of timeslots (Tn) and codes (Cn), said signals including at least a synchronization signal (S), which is transmitted by the base transceiver station and includes a sequence of modulation elementary units suitable to identify the timeslot (T1) and the code (C1) of a service channel containing system messages (M), said method including the following operational steps:marking the synchronization signal (S) in at least one frame (Fx) by the base transceiver station;transmitting a pointer message (P) in the service channel of said frame (Fx) or of a subsequent frame (Fx+n) by the base transceiver station;detecting the marked synchronization signal (S′) by the mobile unit;receiving the pointer message (P) by the mobile unit;extracting from the pointer message (P) the position of at least one system message (M′) by the mobile unit.The present invention relates also to a system implementing this method.

The invention discloses a high-definition video multi-service optical transceiver. A time division multiplexing technology is adopted, and a plurality of paths of high-definition serial digital interface (HDSDI) high-definition videos and a plurality of services are transmitted through a single fiber. The optical transmitter comprises a transmitter and a receiver. Each of the transmitter and the receiver comprises circuits such as a video processor, a memory, a clock recovery stabilization circuit and a singlechip. At least two paths of HDSDI high-definition video signal interfaces are arranged in each video processor. The transmitter is connected with the receiver through a core fiber. The transmitter performs locking and clock recovery on a plurality of paths of high-definition video code streams, extracts related video data and related control signals, accesses effective videos through the memory to realize frame synchronization, multiplexes synchronized signals such as effective high-definition video signals, analogue video signals, audio signals, data signals, network signals and telephone signals, and transmits the synchronized signals in form of optical signal at high speed. The receiver receives and converts the optical signals into electrical signals, demultiplexes the electrical signals to obtain each signal, and combines the effective high-definition video signals according to a required high-definition format for output.

A method determines the position of a mobile object by using at least one radio signal having a rotating transmission characteristic with at least one reference station. The relation between the orientation of the transmission characteristic and reference events is communicated to the mobile object. The orientation of the transmission characteristic and the relative position with respect to the reference station can be determined from the reference event.

The invention discloses a method and a device for elastically transmitting telemetry data based on machine learning. The method comprises the following steps of: performing data acquisition and training learning, acquiring the telemetering data in real time by a sending end and sending the telemetering data to a receiving end, meanwhile performing training on a neural network of the sending end until the deviation of a training result and the telemetering data is lower than a preset threshold; performing parameters transmitting and data simulation, transmitting neural network parameters whichcomplete a training target to the receiving end by a transmitting end, constructing an isomorphism neural network according to the neural network parameters by the receiving end and generating telemetry simulation data by utilizing allowed prediction indication information sent by the sending end; and performing prediction comparison and outliers elimination, acquiring the telemetering data and comparing the telemetry data with an output result of the neural network by the sending end, and generating indication information in combination with flight control prior information for subsequent processing. According to the method for elastically transmitting the telemetry data based on machine learning, the time varying characteristics of the information entropy of the telemetry parameter can be dynamically adapted, the transmission capacity of the telemetry data is greatly reduced, and the reliability and the flexibility of end-to-end information transmission of the space wireless link areimproved.

A method of operating a transmission of a vehicle drive-train that comprises frictional shifting elements and an interlocking shifting element. In the neutral operating condition of the transmission, and in the case of an operating condition variation of the vehicle drive-train in which, when it is required to establish the force flow in the transmission, the interlocking shifting element is to be changed from a disengaged to an engaged operating condition, by increasing the transmission capacities of at least two frictional shifting elements which have to be engaged for producing the force flow, a rotational speed difference in the area of the interlocking shifting element is determined, and a drive torque of a drive machine is adjusted to a level that brings the speed difference within a predefined range at which the interlocking shifting element is approximately synchronized and can therefore be engaged.

Image processing, compressing, decompressing, transmitting, sending and receiving devices and methods, their programs and a displaying device, in which a bit plane number is increased again after the bit plane number is first reduced to enable it to largely improve or remove granular quality deterioration in a mild gradation area and a plain gradation area within an image. For data compression, a first image processor includes a block coder for executing a reversible compression of image data of pixels of a raster image and a bit plane compressor for conducting an irreversible compression of the image data. For data decompression, a second image processor includes a bit plane decompressor for carrying out an irreversible decompression of the compressed data and a block decoder for executing a reversible decoding of the compressed data, to output decompressed image data to a display for displaying a reproduced raster image. The compressed data is once stored in a memory.

A device for control of a hydraulically actuatable shifting element of a motor vehicle transmission, having one clutch piston which defines, with a first surface, a hydraulically pressurizable piston space and, with a second surface of different size, a hydraulically pressurizable reset space and comprising a first clutch valve associated with the piston space, a second clutch valve associated with the reset space and a holding valve associated with the reset space. The valves can be moved according to a control pressure adjusted by a pressure adjuster, a change between a pressurization of the clutch piston on the piston space side and on the reset space, side being performed as a control function so that the clutch piston on its surface facing the reset space is pressurized in an unshifted state of the shifting element and is discharged in a shifted state of the shifting element.

Utility power is wheeled to distributed hydrogen energy storage systems during off peak periods where it is used in an electrolyzer to disassociate water into hydrogen and oxygen. The hydrogen at least is stored for use in a fuel cell or combustion engine driven generator to produce locally generated electricity during peak periods or power interruptions. Efficient electrolysis and gas storage are obtained by operating the electrolyzer at high pressures through two flow loops in which the hydrogen and oxygen produced in the electrolyzer pass to separate gas-water columns and force water into the electrolyzer. When the desired high pressure is reached, the gases are bled off into a series of storage tanks.

The control of a shifting component (1) of a stepped automatic transmission is designed with one frictionally engaged element (2) and one form-locking element (3). When this shifting component (1) is engaged, a transmitting capacity of the frictionally engaged element (2) is first adjusted and when a synchronous state of the form-locking element (3) exists, the form-locking element (3) is closed. When the form-locking element (3) is closed, a transmitting capacity of the frictionally engaged element (3) is reduced. In case of a demand for disengaging the shifting component (1) before opening under load, the form-locking element (3) and the transmitting capacity of the frictionally engaged element (2) is increased so that a power flow, which is conveyed via the closed form-locking element (3) of the shifting component (1), can be conveyed via the frictionally engaged element when the form-locking element (3) is open.

A signal conversion apparatus which converts an input signal x from an image sensor into an output signal y by a function relation represented by Expression 1:y=f(x)=∫bx[1 / r(ξ)]dξ  (1)where b is a predetermined constant, ξ is an integration variable corresponding to a value of the input signal x, and r(ξ) is a quantization step function before removal of a noise of the input signal x, which determines an increment of the input signal x to an increment of the output signal y.

The invention relates to a method for controlling an automated friction clutch arranged in a drive train of a motor vehicle between an internal combustion engine and a transmission, and is operated in a travel-controlled manner by means of an actuator controlled by a control unit and transmits a maximum clutch torque while the friction clutch is closed, where an engine's torque provided by the internal combustion engine is reduced when the maximum clutch torque is exceeded and is increased when the maximum clutch torque rises. The engine torque is reduced which corresponds to a reduced transmittable clutch torque when the reduced transmittable clutch torque is detected and is increased to the engine torque corresponding to the maximum transmittable clutch torque after a first time interval expires, where the engine torque is limited by means of a second, longer time interval when a reduced transmittable clutch torque is detected.

Method for streaming video content from a video server entity to a client entity via a core network and an aggregation network connected through an edge node. The server entity can be either the origin server or a serving node in a CDN that acts as a surrogate server. The video content is offered by the video server entity as a set of consecutive fragments (or chunks or segments), each fragment of this set of consecutive fragments being offered in a plurality of quality levels corresponding to respective encoded bit rates. The method comprises the steps of: transmitting via the network from said client entity to said video server entity via said edge node one or more requests for fragments with a target quality level of said video content to be displayed at said client entity; and receiving at said client entity via said network one or more replies to the requests containing fragments with said target quality levels. The method further comprises the steps of said edge node evaluating the available throughput for said client entity to transmit said fragments to said client entity over said aggregation network and said edge node informing said client entity about said available throughput.

In a wireless base station comprising a center unit, and a remote unit provided with an array antenna and connected to the center unit through an optical fiber, the center unit outputs to the optical fiber a transmission signal in a base band state prior to array processing, the remote unit performs the array processing of transmission signals in accordance with array weights and converts the transmission signals into RF signals, thereby to localize the compensation for transmission signal deviations occurring among the antenna elements on the remote unit side.

According to the invention, working signals are transmitted between network elements via a first communication path. The protection signals are transmitted continuously or in case of a fault at the same wavelength as the working signals via a second communication path of an optical network while the polarization of the protection signals is adjusted orthogonal to the polarization of additional working signals which are transmitted at the same wavelength via sections of the second communication path such that no wavelengths need to be kept clear for protection signals.

A transformation method and system of computer system for transforming a series of video signals read at least a piece of video information via a decoding unit and to access a timer of capture rate and a detecting unit of assumption of difference of the P pictures upon the decoding, wherein the variation of P picture is larger than or equal to the difference value of the P picture of the exploited video information decoded by the decoding unit within the exploiting time. Then an image editing unit is utilized to scale the exploited pictures by the video exploiting unit so as secure the smooth playing of the exploited pictures. Moreover, the video information exploited by the video exploiting unit is accessed by the transformation unit to proceed the coding compressing transformation so as to produce a file with smaller capacity.

A distributed antenna system (DAS) according to an aspect of the inventive concept includes a first node unit for receiving first digital data in accordance with a digital interface standard from a base station, converting the first digital data into second digital data in accordance with a DAS frame standard, and a second node unit for receiving the second digital data from the first node unit, and restoring the first digital data based on the second digital data.

A method of operating a transmission of a vehicle drive-train that comprises frictional shifting elements and an interlocking shifting element. In the neutral operating condition of the transmission, and in the case of an operating condition variation of the vehicle drive-train in which, when it is required to establish the force flow in the transmission, the interlocking shifting element is to be changed from a disengaged to an engaged operating condition, by increasing the transmission capacities of at least two frictional shifting elements which have to be engaged for producing the force flow, a rotational speed difference in the area of the interlocking shifting element is determined, and a drive torque of a drive machine is adjusted to a level that brings the speed difference within a predefined range at which the interlocking shifting element is approximately synchronized and can therefore be engaged.

The invention discloses a power grid differential protection method and system. The method comprises the steps that the sampling time of a head end differential protection device and a tail end differential protection device is synchronized; the head end differential protection device and the tail end differential protection device collect the current amplitude and the power direction of a governed zone line at a mounting position at a certain time interval from the sampling time; the collected current amplitude and power direction are sent to one another; the head end differential protectiondevice and the tail end differential protection device determine whether the governed zone line breaks down or not according to the current amplitude and the power direction collected by themselves and the current amplitude and power direction sent by the opposite ends. The power grid differential protection method and system have the advantages of being simple and convenient in achieving mode andhigh in fault judgment accuracy.

Disclosed is a transmission device that addresses the issue of alleviating the occurrence of delays in delivery, or the abandonment, of transmitted data in the transmission device when transmission capacity of the transmission device declines, as well as being easy to set up and maintain. The transmission device comprises a sorting means for assigning a first signal to either a first path or a second path on the basis of assignment information for assigning the first signal; a first transmitting means for transmitting the signal from among the first signal that is allocated to the first path upon the first path; and a second transmitting means for transmitting the signal from among the first signal that is allocated to the second path upon the second path.

Disclosed is a wireless communication device that solves issues involving the transmission capacity of a data signal being reduced more than necessary in order to preserve the reliability of a pilot signal. A determining unit (20A) determines the reception modulation method for a received data signal in response to the state of a transmission line (3). A transmitting circuit (10) generates a first pilot signal indicating the reception modulation method that was determined by the determining unit (20A) and modulates and transmits the first pilot signal after adding an error correcting code thereto. A receiving unit (20B) receives a second pilot signal indicating a transmission modulation method, which is the method for modulating a transmitted data signal. A switching unit (20C) switches to at least either the modulation method for the first pilot signal transmitted by the transmitting circuit (10) or a redundancy of the error correcting code of the first pilot signal, in response to the transmission modulation method indicated by the second pilot signal received by the receiving unit (20B).