57results about How to "Reduce Signal Error" patented technology

A packet data transmitting method and mobile communication system using the same enables transmission of common ACK / NACK information from each sector of a base station to a user entity in softer handover. The method includes receiving via at least one of the plurality of sectors a data packet from the mobile terminal, the data packet being correspondingly received for each of the at least one of the plurality of sectors; combining the correspondingly received data packets, to obtain a signal having a highest signal-to-noise ratio; decoding the value obtained by the combining; determining a transmission status of the data packet according to the decoding; and transmitting to the mobile terminal a common ACK / NACK signal including one of a common ACK signal and a common NACK signal according to the determining, the common ACK / NACK signal being transmitted via each of the at least one sector.

Systems and methods to set a voltage value associated with a communication bus that includes memory controller coupled to a memory device are disclosed. A particular method may include performing a first calibration operation associated with first data written from a memory controller to a memory device. A second calibration operation may be associated with second data read at the memory controller from the memory device. The operating parameter may be set based on a result of at least one of the first and the second calibration operations at the memory device or the memory controller.

The invention discloses a method, equipment and a system for feeding back a signal error in a multi-carrier communication system, which relate to the field of communication systems, and solve the problem that the signal error cannot be promptly fed back under the condition of limited bandwidth of a feedback channel in the prior art. The embodiment of the invention determines a specific subcarrierspacing first, and feeds back the signal error according to the specific subcarrier spacing at a client, thus the signal error does not need to be fed back in each subcarrier, the feedback data amountis reduced, and the feedback channel cannot be blocked, thereby realizing the aim of promptly feeding back the signal error. The embodiment of the invention is used in the multi-carrier communicationsystem which comprises an xDSL communication system and various wireless communication systems, such as a mobile communication system.

Systems and methods to set a voltage value associated with a memory controller coupled to a memory device are disclosed. A particular method includes comparing test data of a test path to functional data of a functional path. The functional data may be generated based on device data received at a memory controller from a memory device. The test data may be affected by a voltage value applied to a resistor arrangement in electronic communication with the test path. The voltage value may be applied to the resistor arrangement based on the comparison.

The invention discloses a double-frequency microstrip antenna, which comprises an upper-layer microstrip antenna with an upper-layer paster, a lower- layer of microstrip antenna with a lower-layer paster and a feed network located at the bottom layer. The geometric center of the upper-layer paster is provided with an upper-layer central hole, the geometric center of the lower-layer paster is provided with a lower-layer central hole, the double-frequency microstrip antenna is also provided with a short circuit pin which is connected with an earth wire of the feed network after sequentially penetrating into the upper-layer microstrip antenna from the upper-layer central hole and penetrating into the lower-layer microstrip antenna from the lower-layer central hole, and the short circuit pin is respectively electrically connected with the upper-layer paster and the lower-layer paster. In the invention, through fixing the geometric center of the upper-layer paster and the geometric center of the lower-layer paster together and connecting the upper-layer paster and the lower-layer paster with the earth wire of the feed network by the short circuit pin, the invention can stabilize the phase centers of the two frequency-band signals received by the double-frequency microstrip antenna, thereby reducing signal error of the double-frequency microstrip antenna and improving the signal receiving precision of the double-frequency microstrip antenna.

A mutual capacitive touch sensing device is disclosed. The device can include nodes for sensing a touch at the device and for sensing a force applied to the device. Some nodes can perform both touch and force sensing; while other nodes can perform touch sensing. The device can include distinct individual drive lines for driving the nodes and separate distinct individual sense lines for transmitting touch or force signals from the nodes. The nodes can form groups, where the nodes in each group can be coupled to the same drive line and to different sense lines and where each node in a group can be coupled to a node in a different group by the same sense line. Each node can be set up with a different combination of drive and sense lines coupled thereto. An example device can be a click wheel.

The method for measuring the conversion efficiency of a dye-sensitized solar cell and the single-wavelength quantum efficiency comprises the following steps: determining the size of the light-receiving area of ​​the dye-sensitized nano-thin film solar cell, building a balanced bridge compensation circuit, and obtaining a current-voltage curve, which is obtained directly through a computer program Open-circuit voltage, short-circuit current, fill factor, conversion efficiency and other parameters; under the same monochromatic light conditions, measure the short-circuit current signals of the standard reference cell with known parameters and the experimental dye-sensitized nano-thin film solar cell, and compare the two Comparing calculations, the single-wavelength external quantum efficiency of the experimental dye-sensitized nano-thin film solar cell is obtained; an integrating sphere is placed at the spatial position before the dye-sensitized solar cell receives light for light integration, and the short-circuit current signal is measured, which is compared with the current of the standard reference cell The signals were compared and calculated to obtain the single-wavelength internal quantum efficiency of the experimental dye-sensitized nano-thin film solar cell.