CN112910605A - Signal adjusting method and device and electronic equipment - Google Patents
Signal adjusting method and device and electronic equipment Download PDFInfo
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- CN112910605A CN112910605A CN202110190027.1A CN202110190027A CN112910605A CN 112910605 A CN112910605 A CN 112910605A CN 202110190027 A CN202110190027 A CN 202110190027A CN 112910605 A CN112910605 A CN 112910605A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/028—Arrangements specific to the transmitter end
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Abstract
The application provides a signal adjusting method, a signal adjusting device and electronic equipment, wherein the method comprises the following steps: obtaining a transmission signal between a sending end part and a receiving end part, wherein the transmission signal at least comprises a differential signal; determining an abnormal signal in the differential signal; determining a parameter adjustment strategy required by the sending end part for adjusting the signal sending parameters based on the abnormal signal; and sending the signal parameter adjustment strategy to the sending end part, so that the sending end part adjusts the signal sending parameters based on the parameter adjustment strategy. The scheme of the application can reduce the condition that the receiving end part receives the abnormal signal, and improve the signal transmission quality.
Description
Technical Field
The present application relates to the field of information processing technologies, and in particular, to a signal adjustment method and apparatus, and an electronic device.
Background
Under the condition that data are transmitted between different equipment end parts based on high-frequency differential signals, relatively high-efficiency data transmission can be realized.
However, in the process of transmitting data based on the high-frequency differential signal, there may be problems such as signal interference and attenuation due to the influence of factors such as the transmission medium. Therefore, how to improve the signal transmission quality on the premise of transmitting data based on high-frequency differential signals is a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The application provides a signal adjusting method and device and electronic equipment.
The signal adjusting method comprises the following steps:
obtaining a transmission signal between a sending end part and a receiving end part, wherein the transmission signal at least comprises a differential signal;
determining an abnormal signal in the differential signal;
determining a parameter adjustment strategy required by the sending end part for adjusting the signal sending parameters based on the abnormal signal;
sending the signal parameter adjustment policy to the sending end component, such that the sending end component adjusts signal sending parameters based on the parameter adjustment policy.
In one possible implementation, the determining an abnormal signal in the differential signal includes:
determining a data signal used for indicating transmission data and a check signal used for indicating check data in the differential signal;
and verifying the data signals based on the verification signals, and confirming abnormal signals in the data signals according to verification results.
In another possible implementation manner, before determining, based on the abnormal signal, a parameter adjustment policy required by the sending-end component to adjust a signal sending parameter, the method further includes:
determining a target data value of the abnormal signal expected representation;
the determining, based on the abnormal signal, a parameter adjustment policy required by the sending end component to adjust a signal sending parameter includes:
determining a target parameter value expected by the abnormal signal according to the target data value represented by the abnormal signal expectation;
and determining a parameter adjusting strategy for adjusting the abnormal signal by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal.
In yet another possible implementation manner, the determining, by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal, a parameter adjustment policy for adjusting the abnormal signal includes:
and determining a value of a parameter compensation coefficient for adjusting the abnormal signal according to a parameter compensation rule by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal.
In another possible implementation manner, the abnormal signals include multiple types of abnormal signals, and the different types of abnormal signals represent different data value hopping categories;
determining a value of a parameter compensation coefficient for adjusting the abnormal signal according to a parameter compensation rule by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal, including:
obtaining a maximum parameter value adopted by the sending end component for sending a signal;
determining a sending parameter value required to be set by the sending end part to send the data signal capable of representing the target data value according to the maximum parameter value, the target parameter value expected by the abnormal signal and the actual parameter value corresponding to the abnormal signal, and obtaining a sending parameter value corresponding to the abnormal signal;
and calculating the value of at least one parameter compensation coefficient by combining the maximum parameter value, the sending parameter value corresponding to the abnormal signal, the data value hopping category corresponding to the abnormal signal and compensation coefficient formulas corresponding to different data value hopping categories.
In yet another possible implementation manner, the determining, by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal, a signal adjustment policy for adjusting the transmission parameter of the abnormal signal includes:
determining the parameter amplification required by the abnormal signal by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal;
said sending said signal parameter adjustment strategy to said transmitting end component to cause said transmitting end component to adjust signal transmission parameters based on said signal parameter adjustment strategy, comprising:
and amplifying the parameters required by the abnormal signals and sending the parameters to the sending end part, so that the sending end part determines the value of the parameter compensation coefficient based on the parameter amplification, and adjusts the signal sending parameters of the sending end part based on the value of the parameter compensation coefficient.
In yet another possible implementation manner, the transmitting signal further includes: a clock signal;
the determining a data signal for carrying transmission data and a check signal for carrying check data in the differential signal includes:
sampling the differential signal based on the clock signal to obtain a plurality of sampling signals;
at least one data signal characterizing the numerical data and at least one check signal characterizing the check data are determined from the plurality of sampled signals.
In another possible implementation manner, the verifying the data signal based on the verification signal and determining an abnormal signal in the data signal according to a verification result includes:
determining a target threshold for determining a high level;
respectively determining an actual data value represented by the data signal and a check value corresponding to the check signal according to the target threshold;
and determining an abnormal signal in the at least one data signal by combining the check value and the actual data value represented by the data signal.
Wherein, a signal adjusting device includes:
a signal obtaining unit configured to obtain a transmission signal between a transmitting end part and a receiving end part, the transmission signal including at least a differential signal;
an abnormality determination unit configured to determine an abnormal signal in the differential signal;
a strategy determining unit, configured to determine, based on the abnormal signal, a parameter adjustment strategy required by the sending end component to adjust a signal sending parameter;
a strategy sending unit, configured to send the signal parameter adjustment strategy to the sending end component, so that the sending end component adjusts a signal sending parameter based on the parameter adjustment strategy.
Wherein, an electronic equipment includes:
a sending end component;
a receiving end component;
and a processing chip disposed between and connected to the transmit end part and the receive end part;
wherein, the processing chip is used for executing the signal adjusting method.
According to the scheme, in the process that the sending end part transmits signals to the receiving end part, the differential signals transmitted between the sending end part and the receiving end part can be obtained, under the condition that abnormal signals exist in the differential signals, the parameter adjusting strategy required by the sending end part for adjusting the signal sending parameters can be determined by combining the abnormal signals, and the parameter adjusting strategy is sent to the sending end part, so that the sending end part can adjust the signal sending parameters, the condition that the receiving end part receives the abnormal signals can be reduced, and the signal transmission quality is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a signal adjustment method according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of another signal adjustment method according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another signal adjustment method according to an embodiment of the present disclosure;
FIG. 4 is a waveform diagram of a voltage differential signal according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a signal adjustment method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a signal conditioning device according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced otherwise than as specifically illustrated.
Detailed Description
The scheme of the application is suitable for the differential signal transmission between different parts in the electronic equipment, or the scenes such as the differential signal transmission between parts externally connected with the electronic equipment and parts in the electronic equipment, so that the abnormal condition of signal transmission caused by signal attenuation and the like is reduced in the process of transmitting signals between different parts.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a signal adjustment method provided in the present application, and the method of the present embodiment may be applied to a processing chip such as an intelligent chip.
The processing chip is disposed between the sending end component and the receiving end component, and the intelligent chip can be a processing chip disposed on one side of the receiving end component in order to more accurately determine the condition of the signal received by the receiving end component.
The method of the embodiment can comprise the following steps:
s101, obtaining a transmission signal between the sending end component and the receiving end component.
The transmission signal includes at least a differential signal. Considering that signals are generally transmitted through voltage in a signal transmission process, the differential signal may be a voltage differential signal in the present application.
The differential signal is a signal transmitted by using a differential transmission technology. In distinction from the conventional method of one signal wire and one ground wire, differential transmission transmits signals on both wires, and the two signals have the same amplitude and opposite phases. The signals transmitted on these two wires are differential signals. Accordingly, the signal receiving end (e.g., the receiving end part of the present application) compares the difference between the two voltages to determine whether the logic state sent by the sending end part is logic 0 or logic 1.
In one possible implementation, the differential signal may be a so-called high frequency differential signal.
For example, in one possible scenario, the sending side component and the receiving side component may be PCIE (peripheral component Interconnect express) standard bus based connections. Among them, PCIe is a high-speed serial computer expansion bus standard.
For example, a PCIe bus may be provided on a CPU of the electronic device, and the PCIe bus and PCIe devices such as a display card, a network card, or a hard disk may be connected through the PCIe bus, and on this basis, signal transmission may be performed between the CPU and the devices such as the display card or the hard disk through the PCIe bus. For example, suppose that the CPU and the graphics card can be a sending end component and a receiving end component, that is, when the CPU is a sending end component, the graphics card is a receiving end component; and when the display card is a receiving end component, the CPU is a sending end component.
In yet another possible scenario, the sending end-part and the receiving end-part may be connected based on a Universal Serial Bus (USB), which is an external bus standard. Accordingly, if a CPU or the like in the electronic device is connected to other components through a USB bus, the two components to which the CPU and the other components are connected through the USB bus may be a transmitting terminal component and a receiving terminal component, respectively, which transmit signals to each other.
It is understood that in the present application, a processing chip is disposed between the sending end part and the receiving end part, for example, a processing chip may be disposed on the receiving end part side to obtain a transmission signal transmitted from the sending end part to the receiving end part side.
And S102, determining an abnormal signal in the differential signal.
The abnormal signal refers to a signal carried by a signal that does not conform to the actual signal due to signal attenuation or interference.
For example, the exception signal may be a differential signal indicating that the actual value does not match the target value actually transmitted by the transmitter.
The manner of determining the anomaly signal may be various and is not limited in this application.
In a possible implementation manner, the differential signal obtained in this application may include, in addition to the data signal indicating the numerical data that the sender wishes to transmit, verification data for verifying the numerical data indicated by the data signal.
Accordingly, the data signal used for indicating the transmission data and the verification signal used for indicating the verification data in the differential signal can be determined. On the basis, the data signal can be checked based on the check signal, and correspondingly, the abnormal signal existing in the data signal can be determined according to the check data.
The specific way of verifying the data signal based on the verification signal may be multiple possibilities, and the verification way may be specifically selected according to actual needs, which is not limited to this.
S103, determining a parameter adjusting strategy required by the sending end part for adjusting the signal sending parameters based on the abnormal signal.
The parameter adjustment strategy is a relevant adjustment strategy for adjusting parameters of signals sent by the sending end part. The parameter adjustment strategy is determined based on the abnormal signal, and is used for enabling the abnormal signal to be recovered to the normal signal and requiring the sending end part to adjust the signal sending parameters.
For example, when the differential signal is a voltage differential signal, the value of the voltage compensation coefficient of the signal sent by the sending end component generally needs to be adjusted, and on this basis, the parameter adjustment policy may be the determined value of the voltage compensation coefficient.
For another example, parameter adjustment reference information used for calculating a value of the voltage compensation coefficient may be determined, and on this basis, the sending-end component may calculate the voltage compensation coefficient by itself based on the parameter adjustment reference information and perform corresponding adjustment.
It will be appreciated that in practical applications, the parameter adjustment strategy may be determined in conjunction with an abnormal condition of the abnormal signal.
And S104, sending the parameter adjustment strategy to the sending end part, so that the sending end part adjusts the signal sending parameters based on the parameter adjustment strategy.
It can be understood that, after the sending end component adjusts the signal sending parameters according to the signal parameter adjustment strategy, the occurrence of abnormal signals can be reduced.
Therefore, in the process that the sending end part transmits signals to the receiving end part, the differential signals transmitted between the sending end part and the receiving end part can be obtained, under the condition that abnormal signals exist in the differential signals, the parameter adjustment strategy required by the sending end part for adjusting the signal sending parameters can be determined by combining the abnormal signals, and the parameter adjustment strategy is sent to the sending end part, so that the sending end part can adjust the signal sending parameters, the condition that the receiving end part receives the abnormal signals can be reduced, and the signal transmission quality is improved.
Meanwhile, the inventor has found through research that, although it is also possible to reduce the signal abnormality received by the receiving end part due to signal attenuation by presetting several possible sets of parameter configuration values at the transmitting end part and by mutually negotiating between the transmitting end part and the receiving end part to constantly adjust the parameter configuration values set at the transmitting end part, because the preset parameter configuration values are relatively limited, such as presetting 32 sets of parameter configuration values, it is easy to cause that the configured parameter configuration values are not appropriate, and the signal clock transmitted from the transmitting end part to the receiving end part is abnormal, thereby causing the signal adjustment failure.
In the signal transmission process, the processing chip is used for analyzing abnormal signals possibly existing in the transmission signals which can be received by the receiving end part and determining the corresponding parameter adjustment strategy in real time, so that the parameters of the signals sent by the sending end part can be adjusted in time, and the abnormal signal transmission condition is reduced; the situation that parameter adjustment fails due to the fact that the preset fixed parameter configuration values are all met can also be reduced.
The following describes the signal adjustment method according to the present application by taking a case of determining an abnormal signal by combining a check signal as an example, as shown in fig. 2, which shows another schematic flow chart of the signal adjustment method according to the present application, where the method according to the present embodiment may include:
s201, obtaining a transmission signal between the sending end part and the receiving end part.
The transmission signal includes at least a differential signal and a clock signal.
It is understood that the differential signal is a continuous signal, and the effective signal in the differential signal is determined based on the clock signal.
S202, sampling the differential signal based on the clock signal to obtain a plurality of sampling signals.
After the differential signal is sampled based on the clock signal, the sampled signal is a valid differential signal. For the sake of distinction, the sampled differential signal is referred to as a sampling signal.
S203, at least one data signal used for representing numerical data and at least one check signal used for representing check data in the plurality of sampling signals are determined.
The data signal refers to a differential signal which is transmitted by the sending end part to the receiving end part and used for indicating transmission data, and the verification data is a differential signal carrying verification data.
It is understood that, according to the difference of the connection bus between the receiving end part and the sending end part, the transmission protocol for transmitting data may also be different, and the transmission protocol may specify the distribution of the data signal and the check signal in the differential signal, so that the data signal and the check signal may be extracted from the plurality of sampling signals based on the transmission protocol.
For example, if the first 8 bits of the 12-bit data may be data and the last 4 bits may be check data, the sampling signal corresponding to the first 8 bits may be extracted as a data signal, and the sampling signal corresponding to the last 8 bits may be determined as a check signal.
And S204, determining a target threshold for determining a high level.
Wherein the target threshold is used to determine a logical value of the differential signal.
The target threshold is a parameter value of the differential signal, and if the differential signal is a voltage differential signal, the target threshold is a threshold corresponding to a voltage differential value (also referred to as a voltage value) of the differential signal.
S205, respectively determining an actual data value represented by the data signal and a check value corresponding to the check signal according to a target threshold.
For example, the value of the data corresponding to the differential signal may be determined by combining the parameter value of the differential signal and the target threshold.
For example, taking the differential signal as the voltage differential signal as an example, and the target threshold is a voltage threshold, on this basis, if the voltage differential signal represents a differential voltage value not less than the target threshold, the voltage differential signal represents a value of 1, and if the voltage differential signal represents a voltage value less than the target threshold, the voltage differential signal may be determined to represent a value of 0.
Of course, other possibilities are possible for determining the data value of the differential signal based on the target threshold.
In this embodiment, for the sake of convenience of distinction, the data value (or referred to as a logical value) determined by the data signal is referred to as an actual data value, and the value determined by the check signal is referred to as a check value.
And S206, determining an abnormal signal in at least one data signal by combining a check value corresponding to the check signal and an actual data value represented by the data signal.
Based on the check value corresponding to the check signal, the check mode of checking the actual data value corresponding to the data signal can be various, and the application does not limit the check mode.
For convenience of understanding, as an example of a possible case, a check value may be calculated by combining data values corresponding to a data signal, and then, whether the calculated check value is consistent with an actual check value is compared, if not, it is determined that the data signal is abnormal, and the data signal is an abnormal signal.
It can be understood that, this embodiment is exemplified by an implementation manner of verifying the data signal based on the verification signal, and in practical applications, the data signal is verified by other manners based on the verification signal, which is also applicable to this application, and this is not limited thereto.
And S207, determining a parameter adjustment strategy required by the sending end part to adjust the signal sending parameters based on the abnormal signal.
And S208, sending the parameter adjustment strategy to the sending end part, so that the sending end part adjusts the signal sending parameters based on the parameter adjustment strategy.
The above steps S207 and S208 may refer to other related descriptions of the embodiments of the present application, and are not described herein again.
To facilitate understanding of the solution of the present application, the following describes the solution of the present application with reference to an implementation of a parameter adjustment strategy as an example.
As shown in fig. 3, which shows another schematic flow chart of a signal adjustment method according to the present application, the method of the present embodiment may include:
s301, obtaining a transmission signal between the sending end part and the receiving end part.
Wherein the transmission signal comprises at least a differential signal.
S302, a data signal used for indicating transmission data and a verification signal used for indicating verification data in the differential signal are determined.
And S303, verifying the data signal based on the verification signal, and confirming an abnormal signal in the data signal according to a verification result.
The above steps S302 and S303 can refer to the related description of the previous embodiment, and are not described again.
And S304, determining a target data value of the abnormal signal expected representation.
The target data value represented by the abnormal signal expectation is a data value which is expected to be indicated by the fact that the sending end part actually transmits the abnormal signal.
It can be understood that, in the case that there is no abnormality in the differential signal, after the receiving end component receives the differential signal, the determined actual data value represented by the differential signal should be consistent with the target data value that is expected to be represented by the differential signal. Because the abnormal signal is a differential signal with an abnormality, the actual data value of the abnormal signal is inconsistent with the target data value expected to be represented by the abnormal signal.
For example, in one possible case, in combination with the check signal, the value of the target data expected to be expressed by the abnormal signal can be determined.
For another example, in yet another possible case, since the logic values represented by the differential signal are only 0 and 1, if the actual data value of the abnormal signal is 0, it can be deduced that the expected target data value of the abnormal signal is 1. In addition, since the signal abnormality of the high-frequency differential signal is mainly due to signal attenuation, the signal with the abnormality is due to signal attenuation, and the target data value of the signal with the abnormality is 1, and the target data value is erroneously judged to be 0, so that the actual data value of the abnormal signal can be determined to be 1.
It can be understood that, if the target data value expected by the abnormal signal is determined in the process of checking the abnormal signal, the target data value of the abnormal signal does not need to be determined repeatedly here, and the determined target data value of the abnormal signal can be directly obtained.
S305, determining the target parameter value expected by the abnormal signal according to the target data value represented by the abnormal signal expectation.
The parameter value of the differential signal refers to a parameter used for representing a data value of the differential signal. For example, the differential signal is a voltage differential signal, and the voltage differential signal can represent different data values by voltage values, so that the parameter values related to the voltage differential signal are all voltage values.
In a possible implementation, since the differential signal may determine the data value represented by the differential signal in combination with a target threshold for determining the high level, the target threshold is a threshold for a parameter value of the differential signal, as described in detail in the introduction. Therefore, the target parameter value expected by the abnormal signal can be determined by combining the target threshold value and the target data value expected to be characterized by the abnormal signal.
If the differential signal is still taken as the voltage differential signal as an example, the target threshold is the target voltage threshold, and if the target voltage threshold is 1.5V, the voltage value of the differential voltage signal is greater than 1.5V, the data value actually represented by the differential voltage is 1, otherwise, the data value actually represented by the differential signal is 0. Therefore, if the expected data value of the differential signal is 1, the expected target parameter value of the differential signal is at least not less than 1.5, and therefore, the expected target voltage value (i.e., the target parameter value) of the differential signal may be set to 1.5, or 1.5 plus a set value (e.g., set to 0.2, and then to 1.7).
S306, combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal, and determining a parameter adjusting strategy for adjusting the abnormal signal.
The actual parameter value of the abnormal signal is the parameter value of the abnormal signal obtained by the processing chip. Of course, the parameter value also characterizes the parameter value that the receiving end part has when the abnormal signal is obtained.
If the differential signal is a voltage differential signal, then the actual parameter value of the abnormal signal is the actual voltage value of the abnormal signal.
It can be understood that, after the target parameter value expected based on the abnormal signal and the actual parameter value thereof, a parameter adjustment condition that the parameter value of the received abnormal signal can reach the target parameter value and needs to be adjusted by the sending end component for sending the abnormal signal may be analyzed, so as to obtain a corresponding parameter adjustment policy.
For example, in one possible case, a parameter compensation rule for calculating a compensation parameter, such as a compensation rule for calculating a pre-emphasis compensation coefficient or a de-emphasis compensation coefficient, may be pre-configured on the processing chip. On this basis, the value of the parameter compensation coefficient for adjusting the abnormal signal can be determined according to the parameter compensation rule by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal.
As an alternative, the value represented by the differential signal is considered to be 0 or 1, and in the case of signal attenuation, the differential signal with an abnormality is a differential signal whose target data value to be represented is 1 and whose actual data value is 0. In the differential signal transmission process, the differential signal with the target data value of 1 is actually divided into three data value hopping categories, and on the basis, the abnormal signals aiming at different data value hopping categories in the parameter compensation rule can correspond to different compensation formulas.
The data value hopping categories can be divided into: a first hopping class from 0 to 1, a second hopping class that maintains 1, and a third hopping class from 1 to 0.
As shown in fig. 4, when the differential signal is a voltage differential signal, the waveform of the voltage differential signal changes. The data values on the upper graph of fig. 4 are data values actually represented by the sampled differential signals at the respective sampling points in the differential signals, and it can be known from the waveform diagram of the voltage differential signals that Va, Vb, and Vc are actually abnormal signals with abnormality. The data value hopping category of Va is a first hopping category, and Vb and Vc belong to a second hopping category and a third hopping category respectively.
Correspondingly, the abnormal signals which can be determined by the method can comprise three abnormal signals of the three data value categories.
On the basis, the maximum parameter value adopted by the sending end component to send the signal, that is, the maximum parameter value adopted by the sending end component to send the signal at present, is obtained at the handshaking stage of the sending end component and the receiving end component, or is predetermined in other manners.
For example, the differential signal is a voltage differential signal, and the maximum parameter value may be a maximum voltage value or a maximum voltage amplitude, as shown in fig. 4, Vd in the figure is the maximum voltage amplitude.
Then, according to the maximum parameter value, the expected target parameter value of the abnormal signal and the actual parameter value corresponding to the abnormal signal, the sending parameter value required to be set by the sending end component to send the data signal capable of representing the target data value is determined, and the sending parameter value corresponding to the abnormal signal is obtained. Correspondingly, the value of at least one parameter compensation coefficient is calculated by combining the maximum parameter value, the sending parameter value corresponding to the abnormal signal, the data value hopping category corresponding to the abnormal signal and the compensation coefficient formulas corresponding to different data value hopping categories. The following description will be made in conjunction with the voltage differential signal, and will not be repeated herein.
In yet another possible scenario, the desired parameter amplification for the anomaly signal is determined in combination with the desired target parameter value for the anomaly signal and the actual parameter value for the anomaly signal. The parameter amplification refers to an amplification of a parameter value required to adjust the time parameter value of the abnormal signal to a target parameter value.
For example, taking the voltage differential signal as an example, if the expected target voltage value of the abnormal signal is 1.6V, and the actual parameter value thereof is 1.3V, the transmission parameter value for the transmitting end component to adjust the abnormal signal transmission needs to be increased by 0.3V, and therefore, the parameter amplification corresponding to the abnormal signal is 0.3V.
S307, sending the parameter adjustment policy to the sending end component, so that the sending end component adjusts the signal sending parameter based on the parameter adjustment policy.
It can be understood that, when the parameter adjustment policy is the value of the parameter compensation coefficient, the sending end component may directly set or adjust the corresponding parameter compensation coefficient according to the value of the parameter compensation coefficient.
If the parameter adjustment strategy sent to the sending end component is the parameter amplification corresponding to the abnormal signal, the sending end component can determine the value of the parameter compensation coefficient by combining the parameter amplification, namely, the parameter compensation coefficient and the related value thereof which are required to be adjusted for increasing the sending voltage of the abnormal signal sent by the sending end component by the parameter amplification are determined. Accordingly, the sending end component may adjust the signal sending parameters of the sending end component based on the value of the parameter compensation coefficient.
For convenience of understanding, the following description takes the differential signal as a voltage differential signal, and takes an implementation case of determining a value of the parameter compensation coefficient in the processing chip and sending the value to the signal sending end as an example. As shown in fig. 5, which shows another schematic flow chart of a signal adjustment method according to the present application, the flow chart of this embodiment may include:
s501, a transmission signal between the sending end component and the receiving end component is obtained.
The transmission signal includes a voltage differential signal and a clock signal.
S502, sampling the voltage differential signal based on the clock signal to obtain a plurality of voltage sampling signals.
S503, determining a plurality of data signals for representing data values and at least one verification signal for representing verification data in the plurality of voltage sampling signals.
And S504, determining a target voltage threshold value for determining a high level.
Wherein the target voltage threshold is used to determine a logical value characterized by the voltage differential signal.
And S505, respectively determining an actual data value represented by the data signal and a check value corresponding to the check signal according to the target voltage threshold.
If the target voltage threshold is 1.5V and the voltage value of the differential voltage signal of the data signal is 1.4, the actual data value represented by the data signal is 0.
And S506, determining a plurality of voltage abnormal signals in the plurality of data signals by combining the check value corresponding to the check signal and the actual data value represented by the data signal.
The plurality of voltage abnormal signals belong to a plurality of types of abnormal voltage signals, and different types of abnormal signals represent different data value hopping categories.
And S507, determining a target data value of the voltage abnormal signal expected representation.
For example, when the signal obtained by attenuating the voltage signal is abnormal, if the voltage differential signal is an abnormal signal, the voltage value of the voltage differential signal is lower than the target voltage threshold due to the voltage attenuation of the voltage differential signal, and therefore the target data value of the voltage differential signal should be 1.
And S508, aiming at each voltage abnormal signal, determining an expected target voltage value of the voltage abnormal signal according to the expected represented target data value of the voltage abnormal signal.
For example, the expected target voltage value of the voltage anomaly signal is 1, and the data value of the voltage differential signal is determined as 1 only when the voltage value of the voltage differential signal is greater than the target voltage threshold, so that the expected target voltage value of the voltage anomaly signal is at least not less than the target voltage threshold. For example, if the target voltage threshold is 1.5V, the target voltage value expected by the voltage abnormality signal should be at least 1.5V.
Of course, in practical application, the desired target voltage value of the voltage abnormality signal may also be determined comprehensively in combination with the target voltage threshold, the data value transition category of the voltage abnormality signal, and the like.
S509, a maximum voltage value adopted for the transmission signal of the transmitting end component is obtained.
The maximum voltage value is a maximum differential voltage value adopted by the sending end component to send out the voltage differential signal at present.
And S510, for each abnormal voltage signal, determining a sending voltage value required to be set by the sending end component to send a voltage difference signal capable of representing the target data value according to the maximum voltage value, a target voltage value expected by the abnormal voltage signal and an actual voltage value corresponding to the abnormal voltage signal, and obtaining a sending voltage value corresponding to the abnormal voltage signal.
If it is assumed that the maximum differential voltage value currently used by the sending end component to send the voltage differential signal is 2V, the target voltage value expected by the abnormal signal is 1.5V, and the actual voltage value corresponding to the abnormal voltage signal is 1.3V, and therefore the actual voltage value needs to be increased by 0.2V to reach the target voltage value, it is described that in order to enable the receiving end component to receive the voltage abnormal signal, the voltage value used by the sending end component when sending the abnormal voltage signal needs to be adjusted from 2V to 2.2V, and the sending voltage value is 2.2V.
And S511, calculating the value of at least one parameter compensation coefficient by combining the maximum voltage value, the sending voltage values corresponding to various voltage abnormal signals, the data value hopping types corresponding to various voltage abnormal signals and compensation coefficient formulas corresponding to different data value hopping types.
The calculation rules of the compensation coefficients are different according to different types of the compensation coefficients, but under the condition that the compensation rules are determined, the values of the parameter compensation coefficients can be calculated by combining the parameters determined by the application and the corresponding compensation coefficient calculation rules.
For example, taking the pre-emphasis compensation coefficient as an example, when the pre-emphasis compensation coefficient relates to three compensation coefficients, i.e., coefficients C0, C-1, and C +1, on this basis, different compensation coefficient formulas may be corresponding to different data value transition categories, as described in conjunction with fig. 4, and the calculation formulas for the three types of voltage abnormal signals Va, Vb, and Vc shown in fig. 4 are respectively the following formula one, formula two, and formula three:
a transmission voltage value of Va (| C0| - | C-1| + | C +1|) Vd (formula one);
vb is the transmission voltage value (| C0| - | C-1| - | C +1|) Vd (formula two);
the sending voltage value of Vc is (C0 | + | C-1| - | C +1|) Vd (formula three);
wherein | C-1| + | C0| + | C +1| ═ 1 (formula four);
vd is the maximum voltage value.
On the basis, the values of the coefficients C0, C-1 and C +1 can be calculated by combining the formulas I to IV.
S512, sending the value of the at least one parameter compensation coefficient to the sending end component, so that the sending end component adjusts the signal sending parameter based on the value of the at least one parameter compensation coefficient.
The application also provides a signal adjusting device corresponding to the signal adjusting method. As shown in fig. 6, which shows a schematic structural diagram of an embodiment of a signal conditioning apparatus according to the present application, the apparatus of the present embodiment may include:
a signal obtaining unit 601, configured to obtain a transmission signal between a sending end component and a receiving end component, where the transmission signal at least includes a differential signal;
an anomaly determination unit 602, configured to determine an anomaly signal in the differential signal;
a policy determining unit 603, configured to determine, based on the abnormal signal, a parameter adjustment policy required by the sending end component to adjust a signal sending parameter;
a policy sending unit 604, configured to send the signal parameter adjustment policy to the sending end component, so that the sending end component adjusts a signal sending parameter based on the parameter adjustment policy.
In one possible implementation manner, the abnormality determining unit includes:
the signal separation unit is used for determining a data signal used for indicating transmission data and a verification signal used for indicating verification data in the differential signal;
and the abnormal checking unit is used for checking the data signals based on the checking signals and confirming the abnormal signals in the data signals according to the checking results.
In yet another possible implementation manner, the apparatus further includes:
a value determining unit, configured to determine a target data value of the expected characterization of the abnormal signal before the policy determining unit determines the parameter adjustment policy required by the sending end component to adjust the signal sending parameter;
the policy determination unit includes:
the parameter value determining unit is used for determining the target parameter value expected by the abnormal signal according to the target data value expected to be represented by the abnormal signal;
and the parameter adjustment determining unit is used for determining a parameter adjustment strategy for adjusting the abnormal signal by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal.
In a possible manner, the parameter adjustment determining unit is specifically configured to determine, according to a parameter compensation rule, a value of a parameter compensation coefficient for adjusting the abnormal signal by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal.
In a possible implementation manner, the abnormal signals include multiple types of abnormal signals, and the different types of abnormal signals represent different data value hopping categories;
a parameter adjustment determination unit comprising:
a maximum value obtaining unit, configured to obtain a maximum parameter value used by the sending end component to send a signal;
a sending value determining unit, configured to determine, according to the maximum parameter value, a target parameter value expected by the abnormal signal, and an actual parameter value corresponding to the abnormal signal, a sending parameter value that needs to be set for the sending end component to send a data signal that can represent the target data value, so as to obtain a sending parameter value corresponding to the abnormal signal;
and the compensation value determining unit is used for calculating the value of at least one parameter compensation coefficient by combining the maximum parameter value, the sending parameter value corresponding to the abnormal signal, the data value hopping category corresponding to the abnormal signal and compensation coefficient formulas corresponding to different data value hopping categories.
In another possible implementation manner, the parameter adjustment determining unit includes:
an amplification determining unit, configured to determine a parameter amplification required by the abnormal signal by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal;
the policy sending unit is specifically configured to send the parameter amplification required by the abnormal signal to the sending end component, so that the sending end component determines a value of a parameter compensation coefficient based on the parameter amplification, and adjusts a signal sending parameter of the sending end component based on the value of the parameter compensation coefficient.
In yet another possible implementation manner, the transmitting signal further includes: a clock signal;
the signal separation unit includes:
the sampling subunit is used for sampling the differential signal based on the clock signal to obtain a plurality of sampling signals;
a signal separation subunit, configured to determine at least one data signal used to characterize the numerical data and at least one check signal used to characterize the check data in the plurality of sampling signals.
In an alternative, an exception checking unit includes:
the threshold value determining subunit is used for determining a target threshold value for determining a high level;
a signal value determining subunit, configured to determine, according to the target threshold, an actual data value represented by the data signal and a check value corresponding to the check signal respectively;
and the abnormal check subunit is used for determining an abnormal signal in the at least one data signal by combining the check value and the actual data value represented by the data signal.
In another aspect, the present application further provides an electronic device, as shown in fig. 7, which shows a schematic structural diagram of the electronic device, where the electronic device includes:
a transmitting end part 701;
a receiving end component 702;
and a processing chip 703 disposed between and connected to the transmitting end part and the receiving end part;
the processing chip 703 is configured to perform the signal adjustment method according to any of the above embodiments.
It is understood that the electronic device may further include a display unit, an input unit, and the like, which is not limited thereto.
In another aspect, the present application further provides a computer-readable storage medium, in which at least one instruction, at least one program, a set of codes, or a set of instructions is stored, and the at least one instruction, the at least one program, the set of codes, or the set of instructions is loaded and executed by a processor to implement the signal adjusting method according to any one of the above embodiments.
The present application also proposes a computer program comprising computer instructions stored in a computer readable storage medium. The computer program is for performing the signal conditioning method as in any of the above embodiments when run on an electronic device.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. Meanwhile, the features described in the embodiments of the present specification may be replaced or combined with each other, so that those skilled in the art can implement or use the present application. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of signal conditioning, comprising:
obtaining a transmission signal between a sending end part and a receiving end part, wherein the transmission signal at least comprises a differential signal;
determining an abnormal signal in the differential signal;
determining a parameter adjustment strategy required by the sending end part for adjusting the signal sending parameters based on the abnormal signal;
sending the signal parameter adjustment policy to the sending end component, such that the sending end component adjusts signal sending parameters based on the parameter adjustment policy.
2. The method of claim 1, the determining an anomalous signal in the differential signal comprising:
determining a data signal used for indicating transmission data and a check signal used for indicating check data in the differential signal;
and verifying the data signals based on the verification signals, and confirming abnormal signals in the data signals according to verification results.
3. The method of claim 2, further comprising, prior to determining a parameter adjustment strategy required by the transmitter side component to adjust signaling parameters based on the anomaly signal:
determining a target data value of the abnormal signal expected representation;
the determining, based on the abnormal signal, a parameter adjustment policy required by the sending end component to adjust a signal sending parameter includes:
determining a target parameter value expected by the abnormal signal according to the target data value represented by the abnormal signal expectation;
and determining a parameter adjusting strategy for adjusting the abnormal signal by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal.
4. The method of claim 3, said determining a parameter adjustment strategy for adjusting the anomaly signal in combination with a target parameter value expected for the anomaly signal and an actual parameter value for the anomaly signal, comprising:
and determining a value of a parameter compensation coefficient for adjusting the abnormal signal according to a parameter compensation rule by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal.
5. The method of claim 4, wherein the exception signals include multiple types of exception signals, and the different types of exception signals represent different data value hopping classes;
determining a value of a parameter compensation coefficient for adjusting the abnormal signal according to a parameter compensation rule by combining an expected target parameter value of the abnormal signal and an actual parameter value of the abnormal signal, including:
obtaining a maximum parameter value adopted by the sending end component for sending a signal;
determining a sending parameter value required to be set by the sending end part to send the data signal capable of representing the target data value according to the maximum parameter value, the target parameter value expected by the abnormal signal and the actual parameter value corresponding to the abnormal signal, and obtaining a sending parameter value corresponding to the abnormal signal;
and calculating the value of at least one parameter compensation coefficient by combining the maximum parameter value, the sending parameter value corresponding to the abnormal signal, the data value hopping category corresponding to the abnormal signal and compensation coefficient formulas corresponding to different data value hopping categories.
6. The method of claim 3, wherein determining a signal adjustment strategy for adjusting a transmission parameter of the abnormal signal in combination with a target parameter value expected for the abnormal signal and an actual parameter value of the abnormal signal comprises:
determining the parameter amplification required by the abnormal signal by combining the target parameter value expected by the abnormal signal and the actual parameter value of the abnormal signal;
said sending said signal parameter adjustment strategy to said transmitting end component to cause said transmitting end component to adjust signal transmission parameters based on said signal parameter adjustment strategy, comprising:
and amplifying the parameters required by the abnormal signals and sending the parameters to the sending end part, so that the sending end part determines the value of the parameter compensation coefficient based on the parameter amplification, and adjusts the signal sending parameters of the sending end part based on the value of the parameter compensation coefficient.
7. The method of claim 2, the transmitting signals further comprising: a clock signal;
the determining a data signal for carrying transmission data and a check signal for carrying check data in the differential signal includes:
sampling the differential signal based on the clock signal to obtain a plurality of sampling signals;
at least one data signal characterizing the numerical data and at least one check signal characterizing the check data are determined from the plurality of sampled signals.
8. The method of claim 7, wherein the verifying the data signal based on the verification signal and the confirming the abnormal signal in the data signal according to the verification result comprises:
determining a target threshold for determining a high level;
respectively determining an actual data value represented by the data signal and a check value corresponding to the check signal according to the target threshold;
and determining an abnormal signal in the at least one data signal by combining the check value and the actual data value represented by the data signal.
9. A signal conditioning device, comprising:
a signal obtaining unit configured to obtain a transmission signal between a transmitting end part and a receiving end part, the transmission signal including at least a differential signal;
an abnormality determination unit configured to determine an abnormal signal in the differential signal;
a strategy determining unit, configured to determine, based on the abnormal signal, a parameter adjustment strategy required by the sending end component to adjust a signal sending parameter;
a strategy sending unit, configured to send the signal parameter adjustment strategy to the sending end component, so that the sending end component adjusts a signal sending parameter based on the parameter adjustment strategy.
10. An electronic device, comprising:
a sending end component;
a receiving end component;
and a processing chip disposed between and connected to the transmit end part and the receive end part;
wherein the processing chip is configured to perform the signal conditioning method according to any one of claims 1 to 8.
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