75results about How to "Improve signal performance" patented technology

A wearable emergency alert device includes a wearable member and a separately encased mobile phone member that is selectively attachable to the wearable member. The wearable member includes an attachment member for attaching the wearable member to a body part of the user, a first transmitter for sending a first signal to the mobile phone member, a power source for the first transmitter and a first actuator operable by a user for actuating the first transmitter to send a signal to the mobile phone member. The mobile phone member includes a mobile phone transceiver for establishing a first communication link between the mobile phone transceiver and the first transmitter; and the second communication link between the mobile phone transceiver and a remote receiver for transmitting and receiving at least one of data, voice and messages between the mobile phone transceiver and a remote receiver. A mounting member is provided for selectively removably mounting the mobile phone member to the wearable member, and permitting the mobile phone member to engage the first actuator to actuate an emergency signal.

The present invention relates to a method and apparatus for transmitting and receiving data. A data transmission method from a sender terminal to a receiver terminal in a MIMO system using a variable frequency band according to one embodiment of the present invention comprises: repeatedly generating a signal field depending on a frequency band that is applied to the transmission of a data frame; generating a data field including the data; generating a data frame including the signal field and the data field; and transmitting the data frame to the receiver terminal. The present invention is advantageous in that a signal field which is transmitted together with the data being transmitted from the sender terminal to the receiver terminal in the MIMO system can be sent more efficiently.

A network connection system for connecting computer and telephone network components, including a twisted pair cable termination connector for use with twisted pair cable, the twisted pairs being arranged within an outer cable jacket such that each twisted pair substantially occupies a cross sectional quadrant of the cable. The connector includes a pair separator having four passages arranged to substantially keep the four twisted pairs in a quadrant relationship relative to one another and in which the twisted relationship of each twisted pair is maintained substantially until the conductors are electrically terminated to their respective conductive contact member; and a mating component adapted to couple with the twisted pair cable termination connector.

A bi-directional optical transmission system according to the present invention provides transport of x optical channels over n nodes. The system supports two-way transport of the x channels over a single fiber connecting each of the nodes in sequence. The system is advantageous in that only two optical transmission bands are utilized in order to achieve minimal loss in the separation of bands. The use of only two bands permits the utilization of low-loss wide band thin film optical filters to combine and separate the signals at each node. A reflection port of this filter is used to carry oppositely directed signals of the second band from the bi-directional fiber to an optical amplifier for the second band. An alternate arrangement of the optical filters in the two separate bands is chosen to maximize the optical performance of the overall system and significantly reduce insertion losses.

In source routed or hop-by-hop routed protocol communication networks, when congestion is detected at a certain network element, a notification message is sent to nodes. The nodes keep track of congestion condition and generally have knowledge of the congestion, thereby allowing them to make more intelligent routing decisions, i.e., rate controlling messages, routing traffic around congestion, regulating admission at the edge of the network. The intelligent routing decision is based on the congestion condition indicated by a restriction level which is periodically and dynamically updated.

The invention discloses a cooperated multi-point transmission method suitable for a 3D-MIMO (Multiple Input Multiple Output) system. Under the condition that a three-dimensional channel space resource is utilized to the greatest extent, firstly, a pre-coding design is carried out in a vertical direction; after an equivalent level channel is obtained, a cooperated multi-point processing technology based on a maximized signal leakage to noise ratio SLNR algorithm and the interferences between cells are reduced to the minimum. The method specifically comprises the following steps: (1) receiving a signal design by a user from the 3D-MIMO system; (2) pre-coding a three-dimensional channel in the vertical direction; (3) selecting a horizontal direction pre-coding vector based on the maximized SLNR algorithm; (4) obtaining a downstream multi-point cooperated pre-coding matrix under a 3D-MIMO channel; and (5) forming a three-dimensional wave beam and emission a signal. By the aid of the cooperated multi-point transmission method, the space resource is sufficiently utilized and interferences are avoided; user performances are extremely improved and the interferences between the cells are effectively reduced.

An error adjustment method of equalizing transmission characteristics of a signal processing circuitry is disclosed. In a first step, an original complex IQ signal is generated, on which error adjustment is performed. Then, the adjusted complex IQ signal is processed in the signal processing circuitry, thereby obtaining a processed real signal. The envelope of the real signal is detected and this real signal envelope and the original complex IQ signal are synchronized. The envelope of the original complex IQ signal is derived and the synchronized real signal envelope is compared with the synchronized original IQ signal envelope at two consecutive time instances. Finally, a processed complex IQ signal is obtained from the real signal envelope on the basis of the comparison result, which processed complex IQ signal is used in performing error adjustment.

The invention discloses a frame structure of an electronic product made of carbon fiber ceramic composite material, which comprises a ceramic frame and a carbon fiber middle frame plate located inside the ceramic frame and integrally composited with the ceramic frame. The carbon fiber middle frame plate is heated The pressure curing is integrally formed with the ceramic frame. Also disclosed is a method for manufacturing a frame structure of an electronic product made of carbon fiber ceramic composite material, comprising the following steps: S1, preparing a ceramic frame; S2, placing a carbon fiber cloth inside the ceramic frame, and performing 3D molding on the carbon fiber cloth Forming and hot pressing curing treatment, after treatment, a carbon fiber middle frame plate integrated with the ceramic frame is formed. The frame structure of the electronic product is easy to post-processing, can meet the assembly requirements of ceramic parts and structural parts, is beneficial to realize precise assembly, and is light in weight.

Exemplary techniques for improving the performance of signals transmitted by conductive circuit traces are disclosed. The techniques may be realized as a method comprising the step of reducing a surface roughness of at least one surface of a conductive circuit trace. Alternatively, the techniques may be realized as a circuit board for transmitting at least one signal, the circuit board comprising at least one conductive circuit trace for carrying at least one signal, the at least one conductive circuit trace having at least one polished surface. Further, the technique may be realized as a conductive circuit trace for carrying a signal, the conductive circuit trace comprising conductive material having a plurality of surfaces substantially parallel with a direction of propagation of the signal, wherein the plurality of surfaces includes at least one polished surface having a reduced surface roughness.

The present disclosure provides an orthotope sphere decoding method of a multiple antenna system. The method includes: tree mapping a node having highest pruning potential that can be predicted at a root of a tree of orthotope sphere decoding to a root level of the tree, among nodes to be mapped to the tree; and performing tree search of the orthotope sphere decoding on the nodes mapped to the tree.

A network signal coupling circuit installed in a circuit board and electrically coupled between a network-on-chip and a network connector is disclosed to include a coupling module installed each channel thereof, each coupling module including two capacitors respectively electrically connected in series to the two circuits of the respective channel, two sets of equivalent resistors respectively electrically connected in parallel to opposing ends of the capacitors, and two signal equivalent grounding terminals respectively electrically connected to the two sets of equivalent resistors; by means of the characteristic of the capacitors that the strength increases when the frequency rises, the signal coupling performance of the signal coupling circuit is relatively enhanced when the applied network frequency is increased.

A signal supply circuit supplies, to a control line, a control signal which is set so as to have a precharge potential during a precharge period before start of a writing period and which is set so as to have a gray scale potential corresponding to a designated gray scale of each pixel in a time division manner during the writing period. A plurality of switches controls connection between the signal lines and the control line. A control circuit controls the plurality of switches so as to be concurrently turned on during a precharge period and controls the plurality of switches so as to be turned on sequentially during a plurality of unit periods of the writing period. The control circuit sets an initial unit period after elapse of the precharge period among the plurality of unit periods so as to be longer than the other unit periods.

The invention discloses an intelligent railway signal machine. The intelligent railway signal machine comprises a rotating mechanism, three adjusting mechanisms and a cleaning mechanism, wherein a first motor of the rotating mechanism drives the adjusting mechanisms to rotate, signal lamps in the adjusting mechanisms are driven to rotate, the rotating mechanism adjusts the angles of the signal lamps connected with first fixing rods, and the cleaning mechanism can periodically clean protective panels. According to the intelligent railway signal machine, the rotating mechanism is used for driving the signal lamps to rotate, and meanwhile, the angles of the signal lamps are adjusted through the adjusting mechanisms, so that the signal lamps emit dynamic light with variable angles and rotation; in the haze, rain and other poor visibility extreme weather, the dynamic light is easier to find compared with traditional static signal light, and thus the signal transmission effect in the extremeweather is improved; and the cleaning mechanism is used for cleaning the protective panels of the signal lamps, additional cleaning equipment or manual cleaning does not need, and thus the maintenance management cost is reduced.

An edge card connector includes: a substantially rigid, insulating housing having internal electrical contacts to engage the edge of a first circuit board inserted into the housing; solder balls arranged on an outer surface of the housing in a selected pattern to establish connections to corresponding conductive pads on a second circuit board when the solder balls are at least partially melted; and, electrical connections between the internal electrical contacts and the solder balls. The socket may contain additional features for added strength, ease of assembly, and other purposes. The system is assembled by placing the socket onto a circuit board, aligning the solder balls with respective contact pads, and fusing the solder balls to establish electrical connectivity. A standoff structure may be provided to avoid excessive compaction of the solder balls.

A surge current preventing circuit for microwave oven, which contains the first device and second device, when the surge current flows in the first device the stabilized current with the rising of temperature is provided to high and low voltage transformer, with the rising of temperature caused by first device the second has precedence over the first device to provide the stable current to high and low voltage transformer and inhibit the surge current for preventing temperature rising, so the power loss and over heat are reduced, the NTC thermistor is also used in said invention to reduce the cost and simplify the productive procedure.

The invention discloses a semiconductor structure and a forming method thereof. The semiconductor structure comprises: a substrate; a plurality of storage areas which are arranged on the substrate in an array manner and are used for forming a storage device; a plurality of cutting channels, wherein each cutting channel is located between two adjacent storage areas; an alignment mark which is positioned in the cutting channel, is formed on the substrate and is close to the central position of the two storage areas; and a photoresist which is positioned above the storage area and the cutting channel and covers the alignment mark. The alignment mark is arranged at the position close to the middle of the two adjacent storage areas, and the photoresist above the position is relatively flat, so that the intensity of a measurement signal of the alignment mark measured by penetrating through the photoresist is relatively high, the overlay precision is improved, the measurement error is small, the wafer qualification rate is high, and the cost is reduced.

An optical system including a first filter including i) a first port mapped to a first wavelength band and ii) a second port mapped to a second wavelength band, the first filter configured to receive a first transmission signal at the first port and a second transmission signal at the second port, the first transmission signal within the first wavelength band, the second transmission signal within the second wavelength bands; a second filter including i) a third port mapped to the first wavelength band and ii) a fourth port mapped to the second wavelength band, the second filter configured to receive a third transmission signal at the third port and a fourth transmission signal at the fourth port, the third transmission signal within the first wavelength band, the fourth transmission signal within the second wavelength band and; and a wavelength selector

When the impedance of a first circuit is deviated from a standard value, a second circuit is designed for generating a second reflected wave to cancel a first reflected wave generated by the first circuit. Individual structural parts in a transmission line are intentionally designed to be deviated from a standard impedance reversely under a fine control. By this method, the impedance matching between the input and output impedance of the semiconductor element and the transmission line is achieved. As a result, the terminal impedance of the component of the semiconductor circuit and the semiconductor package substrate is adjusted to 50 Ohm, so that a good signal property can be obtained.

The invention discloses a touch panel touching sensing integration structure. A plurality of ink layers are stacked on a transparent substrate in a screen printing manner, at least one guide wire is arranged on the transparent substrate and extends to the surface of the ink layer of the top along each ink layer, and a conductive stacking layer is arranged at the connection of each of two adjacent ink layers and is located on the guide wire. Thus, fine metal ductility and conductivity can be achieved through small conductive stacking layers without affecting the visibility, and the signal transduction capacity of the guide wires is improved.

A representative device includes: a housing; and an antenna assembly mounted to the housing, the antenna assembly having a first antenna and a second antenna, the first antenna and the second antenna being movable between respective stowed and extended positions; in the stowed positions, the first antenna and the second antenna being positioned substantially within an outer periphery defined by the housing.

A space transformer for connecting a signal source and probing a semiconductor wafer and a manufacturing method thereof are provided. The space transformer includes a circuit board including a wiring structure, a redistribution structure bonded to the circuit board and including second contact pads configured to probe the semiconductor wafer, a conductive through via penetrating through the circuit board and providing a vertical conductive path between the circuit board and redistribution structure. A plurality of first contact pads of the wiring structure is configured to connect the signal source. The redistribution structure is thinner than the circuit board, wherein a pitch of the adjacent second contact pads is finer than that of the adjacent first contact pads.

The invention belongs to the education teaching technological field and discloses an Internet-of-Things assistant system for English education and teaching. The system is provided with a video recording module, an audio collection module, a data conversion module, a central control module, a wireless communication module, a data storage module, an interest development and training module, a wireless base station, a teaching server, an intelligent mobile terminal and a teaching module. According to the system of the invention, the interest development and training module is adopted, and therefore, the interest of students can be developed, the enthusiasm of the students in learning can be enhanced, and the English learning levels and abilities of the students can be improved; the teaching module is adopted, an oral language test teaching testing mode, a written examination test teaching mode, a listening test teaching mode and a contextual dialogue test teaching mode are adopted, that is, a comprehensive teaching mode is adopted, and therefore, the functions of the system of the invention are comprehensive, and diverse teaching modes can be realized, and English learning quality andlearning efficiency can be improved.

A recursive demodulation apparatus is provided. Therecursive demodulation apparatus, including: a segment generation unit dividing data symbols with a residual frequency or phase error into a predetermined number of data symbols, and generating a plurality of segments, each of the plurality of segments including the predetermined number of data symbols; and a phase error correction unit sequentially correcting a phase error of each of the data symbols, included in the each of the plurality of segments, for each segment.