Patent application number | Description | Published |
20080234315 | M3 Muscarinic Acetylcholine Receptor Antagonists - The present invention is directed to novel Muscarinic Acetylcholine receptor antagonists of Formula (I), pharmaceutical compositions and methods of using them. Compounds of Formula (I) are, inter alia, | 09-25-2008 |
20080275079 | M3 Muscarinic Acetylcholine Receptor Antagonists - Muscarinic Acetylcholine receptor antagonists and methods of using them are provided. | 11-06-2008 |
20100130468 | INDOLE CARBOXAMIDES AS IKK2 INHIBITORS - The invention is directed to novel indole carboxamide derivatives. Specifically, the invention is directed to compounds according to formula (I): | 05-27-2010 |
20100298387 | IL-8 Receptor Antagonists - This invention relates to novel compounds, compositions and combinations thereof, useful in the treatment of disease states mediated by the chemokine, Interleukin-8 (IL-8). | 11-25-2010 |
20120040958 | INDOLE CARBOXAMIDES AS IKK2 INHIBITORS - The invention is directed to novel indole carboxamide compounds. Specifically, the invention is directed to compounds according to formula (I): | 02-16-2012 |
Patent application number | Description | Published |
20090127443 | METHOD AND DEVICE FOR DETECTING DISPERSION, OPTICAL SIGNAL TRANSMISSION SYSTEM - The present invention discloses a method for detecting dispersion, overcoming disadvantages of complex configuration and insensitivity to a tiny dispersion of the method and device for detecting dispersion in the prior art. The inventive method includes: obtaining a signal within a predetermined bandwidth range from an optical signal received; obtaining an operated value of power via an operation on the signal within the predetermined bandwidth range; and obtaining amount of system dispersion according to a corresponding relation between the operated value of power and the amount of system dispersion. A device for detecting dispersion is disclosed, including a photoelectric filter operational unit and a processing unit, where an output of the photoelectric filter operational unit is connected to an input of the processing unit. The device for detecting dispersion of the present invention is applicable to an adaptive dispersion compensation system. An optical signal transmission system is further disclosed. | 05-21-2009 |
20090175629 | DISPERSION COMPENSATION METHOD AND FIBER TRANSMISSION SYSTEM - A dispersion compensation method and a fiber transmission system are disclosed, pertaining to the field of fiber communications. The dispersion compensation method includes: after performing electrical pre-compensation processing on a digital transmit signal, the transmitting end controls the electrical/optical converting module to output a distorted optical signal; after receiving the optical signal, the receiving end performs post-compensation processing after converting the optical signal into an electrical signal, or converts the optical signal into an electrical signal after performing post-compensation processing on the optical signal. The fiber transmission system includes: a pre-compensation signal processing module, an optical source, an electrical/optical converting module, a fiber transmission line, an optical/electrical converting module, and a post-compensation processing module. With the technical solution of the present disclosure, the non-linear effect may be suppressed, and a flexible dispersion compensation solution may be provided for a dynamically configurable network. | 07-09-2009 |
20100014872 | Method and apparatus for generating a dispersion compensation signal - An apparatus for generating a dispersion compensation signal includes a splitting module for splitting a data signal to be transmitted into N channels of data signals; N pre-processing modules for adjusting in frequency domain the phases and amplitudes of the N channels of data signals and outputting N channels of pre-warped electrical signals; an optical carrier generating module for generating N channels of coherent optical carriers; N electro-optic modulators for modulating the N channels of coherent optical carriers based on the N channels of pre-warped electrical signals and generating N channels of pre-warped optical signals; an optical coupling module for coupling the N channels of pre-warped optical signals into a dispersion compensation optical signal. By pre-processing the data signals, the present disclosure may allow the use of existing devices to generate a dispersion compensation signal so that the bandwidth requirement set by prior art on the electrical device is reduced. | 01-21-2010 |
20100254719 | DEVICE AND METHOD FOR RECEIVING DQPSK SIGNAL AND METHOD FOR OBTAINING DQPSK SIGNAL - A device and a method for receiving a differential quadrature phase shift keying (DQPSK) signal and a method for obtaining a DQPSK signal are provided. The device includes: a splitter, configured to split the DQPSK signal to obtain two optical signals; two optical bandpass filters, connected to the splitter and configured to optically bandpass filter the two optical signals respectively, in which the two optical bandpass filters respectively have a positive frequency offset and a negative frequency offset from a central frequency of the DQPSK signal received by the splitter; and two photoelectric detectors, correspondingly connected to the two optical bandpass filters and configured to photoelectrically convert the filtered optical signals to obtain data signals. In the method, the DQPSK signal is filtered and demodulated by the optical bandpass filters, and then photoelectrically converted by the photoelectric detectors to recover the data signals, such that the problems of poor stability and polarization dependence caused by the Mach-Zehnder interferometer (MZI) are avoided, thereby greatly improving the performance of an optical transmission system. | 10-07-2010 |
20120027406 | METHOD AND DEVICE FOR DETECTING DISPERSION, OPTICAL SIGNAL TRANSMISSION SYSTEM - The present invention discloses a method for detecting dispersion, overcoming disadvantages of complex configuration and insensitivity to a tiny dispersion of the method and device for detecting dispersion in the prior art. The inventive method includes: obtaining a signal within a predetermined bandwidth range from an optical signal received; obtaining an operated value of power via an operation on the signal within the predetermined bandwidth range; and obtaining amount of system dispersion according to a corresponding relation between the operated value of power and the amount of system dispersion. A device for detecting dispersion is disclosed, including a photoelectric filter operational unit and a processing unit, where an output of the photoelectric filter operational unit is connected to an input of the processing unit. The device for detecting dispersion of the present invention is applicable to an adaptive dispersion compensation system. An optical signal transmission system is further disclosed. | 02-02-2012 |
Patent application number | Description | Published |
20080198954 | Channel equalization using frequency and phase compensation - A system and method are provided for channel equalization using a combination of frequency and phase compensation. The method receives a serial data stream input, and parallel processes the data stream input through a first and second path. The first path has a first frequency response, and the second path has a second frequency response, higher than the first frequency response. Signals are combined from the first and second paths, creating a frequency compensated signal. Then, the frequency compensated signal is parallel processed through a third path having a first time delay, and a fourth path having a fourth time delay, greater than the third time delay. The signals from the third and fourth paths are combined, created a phase compensated signal. In one aspect, the phase compensated signal is amplified, creating a voltage limited output signal. | 08-21-2008 |
20080247453 | Current mode logic multi-tap feed-forward equalizer - A system and method are provided for feed-forward equalization (FFE) in a transmission system. The method accepts a serial stream of input digital data signals. For each input data signal, a temporal sequence of signals is generated. Each of the signals in the temporal sequence is selectively shaped. Shaping map include varying the degree of amplification, modifying the slew rate, or varying the time delay. The contributions of the selectively shaped signals in the temporal sequence are then selectively weighted, and a summed output signal is transmitted. | 10-09-2008 |
20080252337 | Receiver signal strength indicator - A system and method are provided for measuring the amplitude of a received signal. The method receives an analog input signal, and compares a peak value of the analog input signal to a threshold level. Threshold transition data is generated, and the threshold level is adjusted in response to the transition data. The above-mentioned processes of comparing, generating, and adjusting are reiterated until the threshold level is about equal to the analog input signal peak value. As a result, a measurement of the analog input signal peak value is supplied. In one aspect, threshold transition data is converted into a digital value. Then, the measurement of the analog input signal peak value uses the digital value to represent the analog input signal peak value. Further, the digital value is converted into an analog voltage as feedback, and the analog voltage is used as the threshold level. | 10-16-2008 |
20090167374 | Jitter-Free Divider - A system and method are provided for jitter-free fractional division. The method accepts a first plurality of first signal phases, each phase having a first frequency. To make the division jitter-free, a phase is selected subsequent to deselecting a previous phase selection. The selected phase is divided by the integer N, supplying a second signal with a second frequency. Using the second signal as a clock, a first plurality of counts is triggered in series, and the counts are used to select a corresponding phase. The first signal may separate neighboring phases by 90 degrees. Then, for (N+0.25), a first count triggers a second count and selects the first phase, the second count triggers a third count and selects the second phase, the third count triggers a fourth count and selects the third phase, and the fourth count trigger the first count and selects the fourth phase. | 07-02-2009 |
20090172070 | Single Clock Cycle First Order Limited Accumulator for Supplying Weighted Corrections - A method is provided for first order accumulation in a single clock cycle. The method accepts a limited gain value and an accumulated value stored in a previous clock cycle. Using combinational logic, the limited gain value is summed with the accumulated value. If the summed value is between upper and lower limits, a non-weighted correction signal is supplied, and the summed value is the storage value. If the summed value is greater than the upper limit, a positive weighting is supplied, the (upper limit+1) is subtracted from the summed value, and the result is the storage value. If the summed value is less than the lower limit, then a negative weighting is supplied, the lower limit is subtracted from the summed value, and the result is the storage value. The storage value is loaded in memory for use as the accumulated value in the subsequent clock cycle. | 07-02-2009 |
20090279653 | Clock and Data Recovery Loop with ISI Pattern-Weighted Early-Late Phase Detection - An inter-symbol interference (ISI) pattern-weighted early-late phase detector is provided. I and Q clocks are generated, where the Q clock has a fixed phase delay with respect to the I clock. The I clock frequency is divided by n, creating a reference clock. A serial data stream is sequentially sampled with the I and Q clocks, creating digital I-bit and Q-bit values, respectively. The I-bit values and Q-bit values are segmented into n-bit digital words. In response to analyzing the I-bit and Q-bit values, I clock phase corrections are identified. Also identified are bit sequence patterns associated with each I-bit value. Each I-bit value is weighted in response to the identified bit sequence pattern and the identified I clock phase correction. A phase error signal is generated by averaging the weighted I-bit values for each n-bit digital word, and I clock is modified in phase. | 11-12-2009 |
20090296867 | ISI Pattern-Weighted Early-Late Phase Detector with Jitter Correction - An inter-symbol interference (ISI) pattern-weighted early-late phase detector is provided. I and Q clocks are generated. The I clock frequency is divided by n, creating a reference clock. A serial data stream is sequentially sampled with the I clock, and with Q clocks having fixed and varied phase delays from the I clock, creating digital I-bit and Q-bit values. The I-bit values and Q-bit values are segmented into n-bit digital words. I clock phase corrections are identified and a modulation factor is determined in response to comparing Q-bit values sampled by the varied delay Q clock. Also identified are bit sequence patterns associated with each I-bit value. Each I-bit value is weighted in response to the identified bit sequence pattern and the identified I clock phase correction. The modulation factor is applied to the weighted average, and I and Q clock phase error signal are generated. | 12-03-2009 |
Patent application number | Description | Published |
20140176519 | Programmable Gamma Circuit of Liquid Crystal Display Driving System - A programmable gamma circuit of liquid crystal display driving system, comprises: a first digital-to-analog converter to a n-th digital-to-analog converter, which receive a data used to generate a reference voltage of a pixel grayscale from a timing controller of the liquid crystal display driving system and convert the data to an analog signal; a first operational amplifier to a n-th operational amplifier, each operational amplifier being connected to a corresponding digital-to-analog converter, the amplified analog signal being the reference voltage of the pixel grayscale ; a first resistor to a fifth resistor, which are connected in series with each other, the operating voltage obtained by a voltage converter of the liquid crystal display driving system converting the reference voltage being input to one end of the first resistor, and one end of the fifth resistor being grounded. The voltage between the first resistor and the second resistor is input respectively to the power supply terminals of the first n/2 operational amplifiers, the voltage between the second resistor and the third resistor is input respectively to the ground terminals of the first n/2 operational amplifiers, the voltage between the third resistor and the fourth resistor is input respectively to the power supply terminals of the last n/2 operational amplifier, and the voltage between the fourth resistor and the fifth resistor is input respectively to the ground terminals of the last n/2 operational amplifier. | 06-26-2014 |
20150022560 | LIQUID CRYSTAL DEVICE AND THE DRIVEN METHOD THEREOF - A liquid crystal device (LCD) and a driving method thereof are disclosed. The LCD includes a display panel, a data driven circuit configured for providing data voltages to the data lines, and a power reducing module. The display panel includes data lines, scanning lines intersecting with the data lines, and a matrix of pixels arranged in intersections of rows and columns The power reducing module is configured for storing a most-reload-image, comparing the data of the most-reload-image and the data of an input image, determining if the input image is a reload image increasing a power consumption of the data driven circuit, and changing a polarity inversion method of a timing controller. By changing the polarity inversion method of the timing controller basing on the input images, the display performance is guaranteed and the power consumption of the data driven circuit is reduced at the same time. | 01-22-2015 |