Patent application number | Description | Published |
20090097394 | METHOD AND APPARATUS FOR CANCELING CHANNEL INTERFERENCE - An apparatus for channel interference cancellation includes a first interference-cancellation module and a first cancellation-signal generating circuit. The first interference-cancellation module comprises a first processing circuit including a grouping circuit and a first transforming circuit. The grouping circuit divides received data into a plurality of groups of first sub-data. The first transforming circuit sequentially transforms the groups of first sub-data from a first domain to a second domain to generate a plurality of groups of first transformed sub-data. The first cancellation-signal generating circuit comprises a delay unit, a first processing unit and a second processing unit. The delay unit sequentially delays the groups of first transformed sub-data to generate a plurality of groups of delayed sub-data. The first and the second processing unit output a first and a second processed signal according to the groups of first transformed sub-data and the groups of delayed sub-data respectively. | 04-16-2009 |
20090109834 | NETWORK APPARATUS WITH SHARED COEFFICIENT UPDATE PROCESSOR AND METHOD THEREOF - A network apparatus with a plurality of transport ports and a shared coefficient update processor is proposed. Each of the plurality of transport ports includes a PHY module. The coefficient update processor is coupled to each PHY module and is shared by the plurality of transport ports. The coefficient update processor decides coefficients of each PHY module. The coefficient update processor is dedicated to one of the plurality of transport ports for use in a period of time. | 04-30-2009 |
20090135962 | Digital slicing device - A digital slicing device is provided for making a numerical value determination with respect to an inputted modulated symbol so as to output a corresponding symbol. The digital slicing device includes a demodulating unit, a slicing unit and a re-modulating unit. The demodulating unit is for collecting at least two successive modulated symbols and for demodulating the two modulated symbols according to a modulation algorithm so as to generate two demodulated symbols. The slicing unit is for rounding the two demodulated symbols so as to generate two rounded demodulated symbols. The re-modulating unit is for re-modulating the two rounded demodulated symbols according to the modulation algorithm so as to generate two re-modulated symbols corresponding to the two modulated symbols. The two modulated symbols are generated simultaneously through conversion using the modulation algorithm. | 05-28-2009 |
20090141745 | NETWORK APPARATUS AND NETWORK SIGNAL PROCESSING METHOD - A network apparatus, for processing a network signal and outputting an output signal, includes an asynchronous signal processing module, a sampling rate converter and a synchronous signal processing module. The asynchronous signal processing module operates in an asynchronous domain, and is utilized for receiving and processing the network signal to generate a first processed signal. The sampling rate converter is coupled to the asynchronous signal processing module, and is utilized for performing sampling rate conversion on the first processed signal to generate the output signal. A first operating frequency of the asynchronous signal processing module is different from a second operating frequency of the synchronous signal processing module. | 06-04-2009 |
20090161803 | Receiver and gain control method thereof - An analog and digital auto-gain control method includes the steps of: providing a gain-mapping table; determining an analog gain level according to power of a far-end transmitted signal; obtaining a gain-mapping value from the gain-mapping table according to the analog gain level; obtaining a digital gain value according to the gain-mapping value; and adjusting a gain of a digital signal according to the digital gain value. A receiver that performs the auto-gain control method is also disclosed. | 06-25-2009 |
20090168934 | Timing Recovery Circuit and Method Thereof - In the implementation of timing recovery in conventional communication systems, significant errors are generated from modulo operations under certain extreme conditions by taking input signals of a slicer as datum points. In order to prevent such errors, the input signal of a modulo processing circuit is taken as the datum point in place of the input signal of a slicer. This technique could also be applied to communication systems adopting the minimum mean-square error algorithm, the zero-forcing algorithm, or other relevant algorithms. | 07-02-2009 |
20090175322 | TRANSCEIVER WITH ADJUSTABLE SAMPLING VALUES AND SIGNAL TRANSCEIVING METHOD THEREOF - A transceiver includes: a first DAC, for receiving a first digital signal to generate an analog signal; an operation circuit, coupled to the first DAC, for receiving the analog signal and a feedback signal to generate an operated analog signal; an ADC, for generating a second digital signal according to the operated analog signal; a digital signal processing circuit, for processing the second digital signal to generate a processed digital signal; a second DAC, for generating the feedback signal according to the processed digital signal; an adjustable delay circuit, for delaying a clock signal according to a control signal to adjust at least one sampling point of at least one of the first DAC, the second DAC and the ADC; and a control circuit, for generating the control signal according to the processed digital signal. | 07-09-2009 |
20090196335 | SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD UTILIZED IN COMMUNICATION SYSTEM - The present invention provides a signal processing device and a signal processing method utilized in a communication system, wherein the communication system includes at least a channel. The signal processing device includes an analog-to-digital converter (ADC), a first adding unit, a feed forward equalizing unit, a data slicing unit, a second adding unit, an infinite impulse response (IIR) compensating unit, and an interference eliminating unit. The signal processing device and the signal processing method thereof disclosed in the present invention can utilize the IIR compensating unit to solve an error distortion problem in the communication system so as to improve the whole efficiency. | 08-06-2009 |
20090196336 | SIGNAL PROCESSING DEVICE UTILIZED IN COMMUNICATION SYSTEM - The present invention provides a signal processing device. The signal processing device includes a first feed forward equalizing unit, a first data slicing unit, a second feed forward equalizing unit, and a second data slicing unit. The first feed forward equalizing unit is utilized for performing a compensation operation according to a digital input signal so as to generate a first equalized signal. The first data slicing unit is coupled to the first feed forward equalizing unit, and utilized for generating a first output signal according to the first equalized signal. The second feed forward equalizing unit is coupled to the first data slicing unit, and utilized for generating a second equalized signal according to the first equalized signal. The second data slicing unit is coupled to the second feed forward equalizing unit, and utilized for generating a second output signal according to the second equalized signal. | 08-06-2009 |
20090199035 | Network signal processing apparatus - A network signal processing circuit includes a first signal processing module, a first sampling rate converter, a second signal processing module, a second sampling rate converter and a timing controller. The first signal processing module is utilized for processing a network signal to output a first processed signal. The first sampling rate converter is utilized for performing signal frequency conversion on the first processed signal according to a first clock timing adjusting signal and outputting a first converted signal. The second signal processing module is utilized for processing the first converted signal to output a second processed signal. The second sampling rate converter is utilized for performing signal frequency conversion on the second processed signal according to a second clock timing adjusting signal and outputting a second converted signal. The timing controller is utilized for generating the first and second clock timing adjusting signals. | 08-06-2009 |
20090257578 | Network Apparatus Capable of Canceling Far-End-Crosstalk and Network Signal Processing Method thereof - The present invention provides a network apparatus capable of canceling far-end crosstalk (FEXT). When the network apparatus is under a training mode, hard data is provided to a FEXT canceller for performing FEXT cancellation. When the network apparatus is under a data mode, soft data is provided to the FEXT canceller for performing FEXT cancellation as well. Therefore, FEXT is effectively canceled, and consumption power of the network apparatus is saved. | 10-15-2009 |
20100054315 | Apparatus and Method for Start-up in Communication System - A transceiver in a communication system and a start-up method thereof are provided. The transceiver comprises an auto-negotiation circuit, a timing recovery circuit, an interference cancellation circuit and an equalizer. The auto-negotiation circuit performs an auto-negotiation procedure to determine whether the transceiver operates as a master or slave transceiver. If the transceiver operates as a slave transceiver, it executes a first stage and a second stage during the start-up process. In the first stage, the transceiver performs channel estimation to generate a channel estimation value, presets the parameters of the equalizer according to the channel estimation value, and trains the timing recovery circuit and the equalizer; in the second stage, the transceiver trains the interference cancellation circuit. | 03-04-2010 |
20100091640 | COMMUNICATIONS DEVICE CAPABLE OF ADJUSTING POWER CONSUMED THEREBY AND METHOD THEREOF, AND ETHERNET COMMUNICATIONS DEVICE - A communications device is capable of adjusting power consumed thereby and includes a receiver and a control circuit. The receiver includes an analog-to-digital converter and a decoding circuit. The analog-to-digital converter receives receive-data from another communications device, converts the receive-data into a digital signal, and provides the digital signal to the decoding circuit for decoding. Based on the digital signal, the control circuit obtains a signaling index that indicates a communications quality of the receiver. The control circuit determines an operating state of the analog-to-digital converter and the decoding circuit in accordance with the signaling index and a receiving index. When the signaling index conforms with a reference range, the control circuit reduces a reference signal so as to reduce linearity of the analog-to-digital converter in accordance with the receiving index, and reduces a decoding capability of the decoding circuit in accordance with the receiving index. | 04-15-2010 |
20100098140 | NETWORK COMMUNICATIONS DEVICE CAPABLE OF PROMOTING CONNECTION QUALITY AND METHOD THEREOF - A network communications device is capable of promoting connection quality, and includes: a plurality of transmitting units for outputting a plurality of analog transmit-signals to another network communications device based on a plurality of digital transmit-signals; a plurality of receiving units for outputting a plurality of digital receive-signals based on a plurality of analog receive-signals sent from the another network communications device; an echo canceller for providing a signal for canceling an echo in one of the digital receive-signals; a near end crosstalk canceller for providing a signal for canceling near end crosstalk in one of the digital receive-signals; a decoding circuit for generating a decoded signal based on one of the digital receive-signals subsequent to cancellation of the echo and the near end crosstalk therein; and a power-increasing control circuit for increasing operating power so as to promote connection quality. | 04-22-2010 |
20100122122 | WIRED NETWORK CONNECTION ESTABLISHING METHOD AND NETWORK DEVICE FOR PERFORMING THE METHOD - A wired network connection establishing method includes the steps of: configuring two network devices to exchange connection capacity information with each other through first and second twisted pair cables of a network cable, the connection capacity information including at least a first connection mode using four of the twisted pair cables, a second connection mode using three of the twisted pair cables, and a third connection mode using two of the twisted pair cables; configuring the two network devices to detect a number of the twisted pair cables in the network cable capable of supporting a normal connection; and configuring the two network devices to determine which one of the first, second, and third connection modes is to be used for establishing a connection based on the number of the twisted pair cables capable of supporting a normal connection. | 05-13-2010 |
20100128625 | Remote Control Method for Physical Layer Device and Related Physical Layer Device - A remote control method for a local physical layer device includes receiving a received packet, determining a coding of the received packet according to a packet format to generate a first determining result, determining an identification of the received packet according to the packet format to generate a second determining result, discarding the received packet according to the first determining result and the second determining result or decoding the received packet according to the packet format to generate a decoding result, and controlling or negotiating with a remote physical layer device according the decoding result. | 05-27-2010 |
20100166009 | VARIABLE-FREQUENCY NETWORK DEVICE AND VARIABLE-FREQUENCY NETWORK CONNECTION ESTABLISHING METHOD - A variable-frequency network connection establishing method is adapted for establishing a connection between a local network device and a remote network device. The variable-frequency network connection establishing method includes the steps of: providing a plurality of local communications protocols including a local standard communications protocol and a local variable-frequency communications protocol to the remote network device; receiving a remote communications protocol provided by the remote network device; generating an indicator signal in accordance with the remote communications protocol and the plurality of local communications protocols; and operating in one of a standard mode and variable-frequency mode according to the indicator signal. | 07-01-2010 |
20100169704 | Ethernet System and Related Clock Synchronization Method - A master device for an Ethernet system is disclosed. The master device includes a receiver, a buffer, a phase lock loop unit, and a transmitter. The receiver is used for generating phase adjustment data according to transmission data sent by a slave device when the master device operates during a switch mode. The buffer is coupled to the receiver for accumulating the phase adjustment data and outputting a phase adjustment value. The phase lock loop unit is coupled to the buffer for adjusting the phase of an output clock according to the phase adjustment value to maintain a fixed phase difference between the recovery clock and the output clock. The transmitter is used for transmitting initialization data to the slave device according to the output clock. | 07-01-2010 |
20100172371 | NETWORK SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD THEREOF - A network signal processing apparatus includes: a transceiver for transmitting or receiving a network signal, and a transformer coupled to the transceiver and a network connecting port for transmitting or receiving the network signal. The transformer includes: a first coil, which is coupled to the transceiver and has a first turn number; and a second coil, which is coupled to the network connecting port and has a second turn number. The second turn number is different from the first turn number. | 07-08-2010 |
20100208577 | COMMUNICATION APPARATUS WITH ECHO CANCELLATION AND METHOD THEREOF - A communication apparatus with echo cancellation includes a transmitter, a receiver, a digital echo cancellation circuit, a parameter control circuit, and an analog echo cancellation circuit. The digital echo cancellation circuit determines an echo estimation component according to a digital output signal, and performs a digital echo cancellation on a digital input signal according to the echo estimation component. The parameter control circuit generates a control signal according to the echo estimation component. The analog echo cancellation circuit includes a first echo cancellation resistor and a second echo cancellation resistor, wherein the resistances of the first echo cancellation resistor and the second echo cancellation resistor are adjusted according to the control signal. | 08-19-2010 |
20100248774 | POWER CONSUMPTION CONTROL METHOD OF A COMMUNICATION SYSTEM AND RELATED COMMUNICATION SYSTEM - A communication system includes a first network device and a second network device. A power consumption control method applied to the communication system includes the steps of: checking a receiving capability of the first network device to generate a first checking result; and selectively notifying the second network device to adjust a transmitting capability of the second network device according to the first checking result. When the first checking result indicates that the receiving capability of the first network device is greater than a first threshold, transmit a first notice signal to notify the second network device. When receiving the first notice signal, lower the transmitting capability of the second network device. | 09-30-2010 |
20100272217 | Power Consumption Control Methods Applied to Communication Systems, and Related Devices - A power consumption control method applied to a communication system adjusts the power consumption of a portion of circuit in the communication system according to a transmission distance between the communication system and another communication system. Another power consumption control method applied to a communication system adjusts the power consumption of a portion of circuit in the communication system according to a signal index of the communication system. | 10-28-2010 |
20100316112 | COMMUNICATION SIGNAL RECEIVER AND SIGNAL PROCESSING METHOD THEREOF - A communication signal receiver includes an adder, a slicer, and an infinite impulse response (IIR) filter. The adder performs an addition on a first signal and a filtered signal to generate an output signal. The slicer performs a hard decision on the output signal to generate a detecting result. The IIR filter is coupled to the slicer and the adder for processing the output signal to generate the filtered signal. The communication signal receiver further includes a decoder. The decoder receives and decodes the output signal to generate a decoded output signal, wherein the decoder is a Viterbi decoder. | 12-16-2010 |
20110043221 | Method and Device for Dynamic Adjustment of Network Operating Voltage - The present invention is to provide a method and device of dynamically adjusting the operating voltage of a network integrated circuit including the steps of detecting and ranking the signal-to-noise ratio of N ports to single out a port for arbitration, dynamically controlling the operating voltage according to the signal-to-noise ratio of the port for arbitration, decreasing the operating voltage by a voltage unit when the signal-to-noise ratio of the port for arbitration is greater than a first threshold, increasing the operating voltage to a default operating voltage when the signal-to-noise ratio of the port for arbitration is smaller than the first threshold, decreasing the operating voltage by a voltage unit when the signal-to-noise ratio of the port for arbitration is greater than a second threshold, and increasing the operating voltage by a voltage unit when the signal-to-noise ratio of the port for arbitration is smaller than the second threshold. | 02-24-2011 |