36 results about "Symmetric configuration" patented technology

An interconnection network for connecting memory cells to sense amplifiers in a memory device includes a plurality of sub-arrays having memory cells, a plurality of switch units each of which is associated with a corresponding one of the plurality of sub-arrays, and true and complement input lines of the sense amplifiers each of which receives data from a selected memory cell via an input line and reference from reference cells via the other input line. The reference, which is a mid-level of data in the memory cells, is obtained from a reference cell having the mid-level value. Alternatively, a mid-level reference may be obtained by averaging data of logic values "1" and "0" stored in different reference cells. The reference cells may be disposed in the sub-arrays or outside the sub-arrays. The interconnection network of the present invention has symmetric configuration so that networks of the input lines of the sense amplifiers have substantially equal structure. Both inputs of a sense amplifier have substantially equal number of connections to data columns and reference columns.

The invention relates to a flip-chip nitride semiconductor LED. In the LED, a light emitting structure has first and second conductivity type nitride semiconductor layers and an active layer interposed therebetween. Each of plurality of first and second electrodes has a bonding pad placed adjacent to a top corner of the light emitting structure and at least one electrode finger extended from the bonding pad. The first and second electrodes are connected to the first and second conductivity type nitride semiconductor layers, respectively. Also, bonding pads are arranged alternately along edges of the light emitting structure with different polarity, in a substantially symmetric configuration with respect to the center of the light emitting structure. In addition, each of electrode fingers is extended from a corresponding pad and bent at least once toward the center of the light emitting structure to adjoin the electrode finger having different polarity.

An ejector device for ejecting droplets of fluid onto a surface includes an ejector mechanism attached to a fluid reservoir through a fluid loading plate that is configured to pierce the reservoir and channel the fluid to a rear surface of the ejector mechanism by capillary action. The ejector mechanism may have a centro-symmetric configuration with a lead free piezo actuator and may be covered by an auto-closing cover.

The invention discloses an onboard automatic speed measuring and height measuring radar system and a speed measuring and height measuring method. The system comprises an antenna, a transmitter, a superhet receiver, a broadband digital intermediate-frequency receiver, a center computer and a power module. The transmitter generates four sawtooth wave linear frequency modulation radio-frequency signals and achieves space symmetric configuration through the antenna; the superhet receiver and the broadband digital intermediate-frequency receiver complete echo signal digital demodulation together and calculate the frequency, amplitude, phase and signal-to-noise ratio information of echo signals; the center computer separates the speed information and the height information of the same echo beam by applying Doppler principle directivity based on the space symmetry and the timing sequence relevance of four beams, and the information is used for calculating the flight speed value and the flight height value of an aircraft. According to the onboard automatic speed measuring and height measuring radar system and the speed measuring and height measuring method, the same radar can be used for automatically measuring the speed and the height, the structure of an aircraft avionics system is simplified, the measuring precision is high, and the onboard automatic speed measuring and height measuring radar system and the speed measuring and height measuring method can be used for measuring carrier aircraft flight parameters.

Apparatus for forward and reverse transfer of fluids through capillaries, consisting of at least one capillary, a pressure generating or housing means, which preferably includes a box, having first and second means for aligning the capillaries from one set of wells to a second set of wells, and applied pressure differential transfers small amounts of liquid uniformly and in parallel. A method of accurately controlling a desired volume of fluid flow is particularly useful for transferring liquids to and from a microtiter dish to a Capillary Array Electrophoresis Microplate having liquid wells spaced in a radially symmetric configuration, or for maximizing desired transfer of the like or improved novel enhanced patterned arrays.

An ejector device for ejecting droplets of fluid onto a surface includes an ejector mechanism attached to a fluid reservoir through a fluid loading plate that is configured to pierce the reservoir and channel the fluid to a rear surface of the ejector mechanism by capillary action. The ejector mechanism may have a centro-symmetric configuration with a lead free piezo actuator and may be covered by an auto-closing cover.

A semiconductor stack package includes lower and upper individual packages. When the upper individual package is stacked on the lower individual package, a heat-conducting layer provided under the upper package touches a heat-mediating layer provided on the lower package. Thus, a layer of trapped air found in conventional stack packages is eliminated, and a direct heat-dissipating path is produced through both the heat-conducting layer and the heat-mediating layer. Therefore, the heat dissipation of the stack package is improved. Alternatively, the stack package may have a symmetric configuration in which each IC chip faces away from each other. A memory module has several stack packages mounted on one or both surfaces of a module board. The method includes forming the packages and stacking the packages. The method further includes forming a module board and mounting the stack packages on the module board.

A multilayer electric connector comprises a main board having at least two layers of slots, each upper slot and lower slot sandwiched by two-lateral circuit boards. Two conductive sets electrically connect the upper slot, lower slot and those two circuit boards. The upper conductive set has two conductive members, one of which connects the main board via the upper slot and the right circuit board, the other of which connects the right circuit board and an external instrument terminal. The lower conductive set connects the lower slot and the left circuit board in a symmetric configuration as the upper conductive set connects the upper slot and the right circuit board. The circuit boards, coupled with the conductive sets, form two receptacles therebetween.

Substantially symmetric RFOG configurations for rotation rate sensing using two input / output coupling components. Configurations are disclosed where optical coupling components handles both input and output lightwaves. Reducing the number of input / output coupling components while maintaining a substantially symmetric configuration for the CW and CCW beam reduces losses, prevents realization of bias errors due to asymmetric light paths in the resonator, and produces better signal to noise performance. In addition, the invention discloses systems integrating multiple functions into compact micro-optic devices that are easier to fabricate and package, leading to compact RFOGs with reduced cost and improved manufacturability.

A connector with controlled impedance includes at least one set of differential signal terminals with an associated ground terminal. The ground terminal has a symmetric configuration, while the two differential signal terminals have asymmetric configurations. The asymmetric configurations permit capacitive coupling to occur primarily between the two differential signals in an area of the connector where the inductance of the connector would be high. The two differential signal terminals flank the ground terminal.

Hollow core fiber RFOG having symmetric M-(or W-)shape, three-(or two-)mirror configurations. These symmetric configurations help to cancel out polarization error induced bias of the RFOG even when light of the unwanted ESOP is present. The RFOG resonator with optical components forming substantially small cross-coupling angles between their polarization axes, and / or with polarizing elements inserted into the resonator, and / or with resonator mirrors having identical reflectivity for light of different polarization states, can effectively reduce the polarization mode induced bias error.

The present invention relates to a kind of symmetric type color separating grating. Each cycle of the grating includes three steps of phase, which is characterized in that it has a center symmetric configuration with the lowest notch in each cycle at the center of the cycle. The depth of these three steps of phase is h1=h2=lambda / n-1, the sums of the width of each step of phase are equal: wl1+wl2=w21+w22=w3, and all parts of each step are equal: wl1+wl2=w21=w22=d / 6, wherein * is wavelength of incident base frequency, d is cycle of the grating, n is refractive index of the material of the substrate. The color separating grating of the invention can solve effectively the remaining problems of the light with the base frequency and double frequency resulting from the error of alignment of the module plate.

A handle 1 for controlling instruments, includes a frame 2 with a center line 9, operating elements 4, 10, 24 that are connected to the frame 2, which operating elements 4, 10, 24 are movable between a first and a second position, an actuator element 6 that is controllable by the operating elements 4, 10, 24, which actuator element 6 is constructed and arranged for controlling an instrument 53 that is arranged at a distance from the handle 1. The operating elements 4, 10, 24 are arranged in a rotationally symmetric configuration that is concentric with the center line 9 of the frame 2. An endoscopic instrument 60 including a tube like element 50, a tool 53 and a handle 1, and an assembly 80 including an endoscopic instrument 60 and an endoscope 70 are also described.

The line driver with active termination includes: a differential amplifier having an inverting output terminal, a non-inverting output terminal, an inverting input terminal, and a non-inverting input terminal; a first resistor unit coupled to the inverting input terminal; a impedance matching resistor unit coupled to the non-inverting output terminal; and a resistive feedback network, having a plurality of resistors in symmetric configuration. The resistive feedback network further includes: a second resistor unit coupled to the impedance matching resistor unit and the inverting input terminal; a third resistor unit coupled to the non-inverting output terminal and the inverting input terminal; a fourth resistor unit coupled to the impedance matching resistor unit and the inverting input terminal; and a fifth resistor unit coupled to the inverting output terminal and the inverting input terminal. Each of the resistor units and the impedance matching resistor unit includes a plurality of resistors in symmetric configuration.

A semiconductor stack package includes lower and upper individual packages. When the upper individual package is stacked on the lower individual package, a heat-conducting layer provided under the upper package touches a heat-mediating layer provided on the lower package. Thus, a layer of trapped air found in conventional stack packages is eliminated, and a direct heat-dissipating path is produced through both the heat-conducting layer and the heat-mediating layer. Therefore, the heat dissipation of the stack package is improved. Alternatively, the stack package may have a symmetric configuration in which each IC chip faces away from each other. A memory module has several stack packages mounted on one or both surfaces of a module board. The method includes forming the packages and stacking the packages. The method further includes forming a module board and mounting the stack packages on the module board.

The present invention provides memory device access method and device. In one embodiment of the present invention, the memory device has two channels with asymmetric memory array configurations. That is, these two channels have at least one unpaired memory array except at least one paired memory array to constitute the symmetrically configured part. During accessing the memory device, single channel transmission bandwidth is used in accessing the asymmetric configuration part while double channel high frequency transmission bandwidth is used in accessing the symmetric configuration part. In this way, the present invention can utilize the double channel characteristic in raise the access efficiency of memory device with asymmetric memory array configuration.

An in-line MRI-linac apparatus is provided that includes an MRI magnet of an MRI scanner, where the MRI magnetic includes a magnetic field, where the magnetic field has a quasi-uniform fringe field, where the fringe field is proximal to an axis of symmetry of the MRI magnet, and a magnetically unshielded dynamically moveable linac that includes a treatment beam that is aligned with field lines of the fringe field in a quasi axial symmetric configuration, where a position of the linac in the fringe field continuously adapts according to a target position to enable continuous dose delivery to the target.

A connector with controlled impedance includes at least one set of differential signal terminals with an associated ground terminal. The ground terminal has a symmetric configuration, while the two differential signal terminals have asymmetric configurations. The asymmetric configurations permit capacitive coupling to occur primarily between the two differential signals in an area of the connector where the inductance of the connector would be high. The two differential signal terminals flank the ground terminal.

The invention provides a small area electrically removing type rewritable read only memory array which comprises a plurality of strips of parallel byte lines, word lines and common source lines. A plurality of strips of the byte lines are divided into a plurality of groups of byte lines which comprises a first group of byte lines and a second group of byte lines. The word lines comprise a first word line. The common source lines comprise a first common source line. The small area electrically removing type rewritable read only memory array also comprises a plurality of sub-memory arrays, eachsub-memory array comprises a first storage crystal cell, a second storage crystal cell, a third storage crystal cell and a fourth storage crystal cell which are connected with the two groups of byte lines, a word line and a common source line, wherein the first storage crystal cell and the second storage crystal cell are symmetrically provided, the third storage crystal cell and the fourth storage crystal cell are symmetrically provided, and the first storage crystal cell and the second storage crystal cell are in symmetric configuration with the third storage crystal cell and the fourth storage crystal cell respectively with the first common source line. According to the invention, area cost can be greatly reduced, and a byte write function is realized.

The present invention provides a multi-physical resource block configuration method / system in an uplink and downlink, a medium, and a device, which are applied to the cellular narrowband Internet ofThings. The configuration method comprises the following steps: reading a signaling format of configuration signaling, wherein the signaling format of the configuration signaling comprises a switchingconfiguration signaling format and a hybrid configuration signaling format with a symmetric uplink and downlink configuration and an asymmetric configuration; indicating that the multi-physical resource block is configured on the uplink and downlink according to the signaling format of the configuration signaling. The multi-physical resource block configuration method / system in the uplink and downlink, the medium, and the device provided by the present invention can flexibly and efficiently switch between the symmetric configuration and the asymmetric configuration according to specific conditions when business volume change happens suddenly in multi-PRB operations, save signaling overhead and improve system performance.

A microstructured optical fibre comprises a doped core region embedded in a cladding layer, and a plurality of longitudinal tubes, wherein a radial cross-section of the optical fibre comprises a central hexagonal portion comprising a plurality of holes arranged according to a hexagonal grid surrounding a core section. Each hole corresponds to a respective tube, within a hexagonal boundary of the grid, and the plurality of holes comprises holes of first and second types arranged in a biaxial mirror-symmetric configuration. The holes of the first type are arranged in two side holey structures comprising distinct sub-grids of the hexagonal grid, defined by respective outer boundaries corresponding to portions of the hexagonal boundary of the grid and respective inner boundaries. Outer tangential lines to the respective inner boundaries cross each other at the opposed side of the core with respect to the side of the respective side holey structure.

A light emitting device comprises two or more light emitting elements, two or more lead frames electrically connected to the light emitting elements, and a case formed as a slender flat box shape and having an accommodating recession for accommodating the light emitting elements and the lead frame, wherein the lead frames are buried in the case and provided side by side in a longitudinal direction of the case, and the surfaces of the lead frames are arranged coplanar, the light emitting elements are mounted on the lead frames, and the plurality of lead frames and the case are arranged in a nearly linear symmetric configuration with respect to a central line that bisects the light emitting device in the longitudinal direction, so that no uneven heat distribution takes place.

A light emitting device comprises two or more light emitting elements, two or more lead frames electrically connected to the light emitting elements, and a case formed as a slender flat box shape and having an accommodating recession for accommodating the light emitting elements and the lead frame, wherein the lead frames are buried in the case and provided side by side in a longitudinal direction of the case, and the surfaces of the lead frames are arranged coplanar, the light emitting elements are mounted on the lead frames, and the plurality of lead frames and the case are arranged in a nearly linear symmetric configuration with respect to a central line that bisects the light emitting device in the longitudinal direction, so that no uneven heat distribution takes place.

The invention discloses an asymmetric configuration management method, device and equipment and a computer readable storage medium, and the method comprises the steps: obtaining symmetric configuration files corresponding to all preset nodes stored by a configuration management server when a target node is configured; wherein the symmetric configuration file comprises asymmetric configuration information of all preset nodes, and the target node is any preset node; according to the asymmetric configuration information and the specific information of the target node, converting the symmetric configuration file into an asymmetric configuration file corresponding to the target node, so that the target node finishes configuration by utilizing the asymmetric configuration file. According to theinvention, the symmetric configuration file stored in the configuration management server is converted into the asymmetric configuration file, so that each preset node can complete configuration by using the corresponding asymmetric configuration file; and the configuration management server can perform asymmetric configuration management according to a symmetric configuration management mode, sothat the workload of a user is reduced, and automation can be better realized.