Abstract: The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. Said training step includes at least one of the following: counting a number, and returning to the preceding step if a local receiver is not yet ready after finishing counting the number; detecting a reception signal according to a signal detection level, and returning to the preceding step when none of the reception signal is detected; determining a number of level(s) of the reception signal, and returning to the preceding step if the number of level(s) is less than an expected level number; and comparing a signal-to-noise ratio of the reception signal with a signal-to-noise threshold, and returning to the preceding step when the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.

Abstract: This invention discloses a signal receiving device for Ethernet and a control method thereof. The signal receiving device includes a gain control circuit, an alien near-end crosstalk canceller, a noise canceller, and a DFE. The gain control circuit adjusts an input signal of the signal receiving device according to a setting parameter. The alien near-end crosstalk canceller cancels an alien near-end crosstalk interference. The noise canceller uses a first filter to cancel noises. The DFE uses a second filter to cancel an inter-symbol interference of the input signal. The method includes steps of: temporarily stopping the gain control circuit from updating the setting parameter before a seed collision occurs, and temporarily stopping one of the noise canceller and the decision feedback canceller from updating the first filter coefficient of the first filter or the second filter coefficient of the second filter temporarily during the seed collision.

Abstract: A method for controlling amplification factor of a receiver device includes: detecting a first variation of an equivalent length of a cable, detecting a second variation of amplification factor of a digital automatic gain controller (DAGC), determining a first update value of amplification factor of an analog automatic gain controller (AAGC) according to the first variation and the second variation, calculating a tuning ratio of the first update value to a current value of the amplification factor of the AAGC, calculating a second update value of the amplification factor of the DAGC according to the tuning ratio, updating a set value of the amplification factor of the AAGC according to the first update value, and updating a set value of the amplification factor of the DAGC according to the second update value.

Abstract: The present invention discloses a temperature insensitive testing device comprising: a transmission-end test sequence generating circuit to generate a test sequence; a transmission circuit to process the test sequence according to a transmission clock and thereby generate a test signal; a reception circuit to process an echo of the test signal and generate a digital echo signal; a correlation-value generating circuit to generate correlation values including a maximum correlation value according to the test sequence and the digital echo signal; and a decision circuit to determine whether a relation between the maximum correlation value and at least one threshold satisfies a predetermined condition and thereby generate a decision result, wherein the frequency of the transmission clock is lower than a predetermined frequency which confines the variation of the maximum correlation value to a predetermined range provided that the temperature variation of the transmission cable is within a temperature variation ran

Abstract: A method for controlling amplification factor of a receiver device includes: detecting a first variation of an equivalent length of a cable, detecting a second variation of amplification factor of a digital automatic gain controller (DAGC), determining a first update value of amplification factor of an analog automatic gain controller (AAGC) according to the first variation and the second variation, calculating a tuning ratio of the first update value to a current value of the amplification factor of the AAGC, calculating a second update value of the amplification factor of the DAGC according to the tuning ratio, updating a set value of the amplification factor of the AAGC according to the first update value, and updating a set value of the amplification factor of the DAGC according to the second update value.

Abstract: This disclosure provides a network apparatus with communication ports, each connected to multiple channels, assigned a seed for eliminating the interference among the communication ports, and operable in a master or slave mode, each channel having a communication unit which comprises: an echo canceller, a near-end crosstalk (NEXT) canceller, a decision feedback equalizer, and a control unit configured for controlling the communication ports if the echo canceller and the decision feedback equalizer keep updating their filter coefficients according to the same symbol during a first pre-determined time-interval; wherein when more than two of the communication ports operate in the master mode, the control unit assigns different seeds to the more than two communication ports; and wherein when successive two of the communication ports operate in the slave mode, the control unit stops either the echo canceller or the NEXT canceller from updating their filter coefficients during a second pre-determined time-interval.

Abstract: The present invention discloses a signal level decision device to determine the level of a source signal. Said source signal comprises a plurality of source messages along a time axis; each source message corresponds to one of a plurality of normal levels; and each normal level is equivalent to at least one of a plurality of extension levels. The signal decision device comprises: a storage circuit to store the level information of the normal level(s) and the equivalent extension level(s) thereof in connection with some or all of the source messages; a transition parameter calculation circuit to calculate a plurality of transition parameters of the normal level and its equivalent extension level(s) in connection with each of the source messages according to the level information; and a decision circuit to determine the level of each of the source messages according to the plurality of transition parameters.

Abstract: The present invention discloses a signal transmission device performing compensation by filtering characteristics for generating a transmission signal according to a pulse amplitude modulation signal. The signal transmission device comprises: a filtering characteristic compensation circuit for generating a compensation signal according to the pulse amplitude modulation signal and a filtering function; a filter coupled to the filtering characteristic compensation circuit for generating a filtered signal through filtering the compensation signal according to the aforementioned filtering function; and an analog front-end circuit for generating the transmission signal according to the filtered signal.

Abstract: A method for estimating cable length in an Ethernet system and a receiver thereof are applicable to an Ethernet system. The method for estimating cable length includes obtaining a channel tap from channel information of a feedback equalizer in the Ethernet system and estimating a cable length according to the channel tap, a first coefficient and a constant.

Abstract: The present invention discloses a parameter generating device and the method thereof to generate a parameter for circuit operation in which the parameter corresponds to an N degree polynomial of a characteristic curve while said N is a positive integer. The parameter generating device comprises: a storage circuit to store at least N+1 initial values that are determined by a start value and a unit variation amount; and an parameter calculating circuit, coupled to the storage circuit, to carry out addition calculation for at least [(K?1)×N+1] time(s) if a multiple K is positive or subtraction calculation for at least ?K×N time(s) if the multiple K is negative, so as to generate the aforementioned parameter, wherein the multiple K is derived from a difference divided by the unit variation amount while the difference is a current value minus the start value.

Abstract: An impedance adjustment method for a communication device, wherein the communication device has a plurality of impedance paths for selection, includes: selecting an initial impedance path; and utilizing a predetermined algorithm to examine a portion of the plurality of impedance paths by starting from the initial impedance path for selecting an optimized impedance path for the communication device. A delay capacitance adjustment method for a communication device, wherein the communication device has a plurality of delay capacitance paths for selection, includes: selecting an initial delay capacitance path; and utilizing a predetermined algorithm to examine a portion of the plurality of delay capacitance paths by starting from the initial delay capacitance path for selecting an optimized delay capacitance path of the communication device.

Abstract: A network receiver includes a first variable resistor, a second variable resistor, a first processing unit, a second processing unit and an adjusting circuit. The first variable resistor is coupled to a first transmission line via a first terminal for transmitting a first signal. The second variable resistor is coupled to a second transmission line via a second terminal for transmitting a second signal. The first processing unit is utilized for obtaining a difference according to the first signal and the second signal, and processing the difference to generate first data. The second processing unit is utilized for obtaining a summation according to the first signal and the second signal, and processing the summation to generate second data. The adjusting circuit is utilized for adjusting resistance(s) of at least one of the first variable resistor and the second variable resistor according to the first data and the second data.

Abstract: A transceiver for dynamically adjusting a transmission clock includes: a transmitting unit, a receiving unit, and a transmission clock tracking unit. The transmitting unit is arranged for transmitting a transmission signal according to the transmission clock. The receiving unit is arranged for receiving a reception signal. The transmission clock tracking unit is coupled to the transmitting unit and the receiving unit, and arranged for dynamically controlling the transmission clock of the transmitting unit according to a reception clock corresponding to the reception signal.

Abstract: The present invention discloses a signal level decision device to determine the level of a source signal. Said source signal comprises a plurality of source messages along a time axis; each source message corresponds to one of a plurality of normal levels; and each normal level is equivalent to at least one of a plurality of extension levels. The signal decision device comprises: a storage circuit to store the level information of the normal level(s) and the equivalent extension level(s) thereof in connection with some or all of the source messages; a transition parameter calculation circuit to calculate a plurality of transition parameters of the normal level and its equivalent extension level(s) in connection with each of the source messages according to the level information; and a decision circuit to determine the level of each of the source messages according to the plurality of transition parameters.

Abstract: A master-slave detection method includes: every single time period, utilizing a random manner for determining whether a first device is used to transmit a specific pulse signal to a second device; every single time period, utilizing a random manner for determining whether the second device is used to transmit the specific pulse signal to the first device; when the first device receives at least one portion of the specific pulse signal earlier than the second device, setting the first device as a master device, stopping the master device from sending the specific pulse signal and utilizing the master device to start transmitting a specific sequence; and setting the second device as a slave device when the second device receives the specific sequence. The at least one portion of the specific pulse signal includes continuous single pulses.

Abstract: A signal transceiving method, applied to a signal transceiver, includes: adjusting to approximate a value of a clock frequency of a signal to be transmitted from the signal transceiver to a value of a clock frequency of a received signal; performing an echo cancellation operation; computing a distance between a first certification code transmitted by the signal transceiver and a second certification code received by the signal transceiver; and stopping the echo cancellation operation when the distance is smaller than a threshold value.

Abstract: The present invention discloses a signal transmission device performing compensation by filtering characteristics for generating a transmission signal according to a pulse amplitude modulation signal. The signal transmission device comprises: a filtering characteristic compensation circuit for generating a compensation signal according to the pulse amplitude modulation signal and a filtering function; a filter coupled to the filtering characteristic compensation circuit for generating a filtered signal through filtering the compensation signal according to the aforementioned filtering function; and an analog front-end circuit for generating the transmission signal according to the filtered signal.

Abstract: A transceiver for dynamically adjusting a transmission clock includes: a transmitting unit, a receiving unit, and a transmission clock tracking unit. The transmitting unit is arranged for transmitting a transmission signal according to the transmission clock. The receiving unit is arranged for receiving a reception signal. The transmission clock tracking unit is coupled to the transmitting unit and the receiving unit, and arranged for dynamically controlling the transmission clock of the transmitting unit according to a reception clock corresponding to the reception signal.

Abstract: The disclosure provides an electronic device and a network access module. The electronic device comprises: a multimedia processing module and a network access module. The multi-media processing module comprises a first network control circuit, and the network access module comprises: a second network control circuit, a third network control circuit, at least a fourth network control circuit, a network transmission unit, and a multiplexer. The multiplexer is utilized for selecting at least a multimedia connecting port from a plurality of multimedia connecting ports to connect to the at least a fourth network control circuit, so as to make at least a multimedia device connected to the at least a multimedia connecting port to connect to an external network and access the external network via the at least a fourth network control circuit, the network transmission unit, the third network control circuit, and the network connecting port.

Abstract: A signal transceiving method, applied to a signal transceiver, includes: adjusting to approximate a value of a clock frequency of a signal to be transmitted from the signal transceiver to a value of a clock frequency of a received signal; performing an echo cancellation operation; computing a distance between a first certification code transmitted by the signal transceiver and a second certification code received by the signal transceiver; and stopping the echo cancellation operation when the distance is smaller than a threshold value.