CN107360337A - A kind of full silver association Modem transmission method, storage medium and terminal - Google Patents
A kind of full silver association Modem transmission method, storage medium and terminal Download PDFInfo
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- CN107360337A CN107360337A CN201710547965.6A CN201710547965A CN107360337A CN 107360337 A CN107360337 A CN 107360337A CN 201710547965 A CN201710547965 A CN 201710547965A CN 107360337 A CN107360337 A CN 107360337A
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- signal
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- modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0081—Network operation, administration, maintenance, or provisioning
- H04M7/0084—Network monitoring; Error detection; Error recovery; Network testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/002—Applications of echo suppressors or cancellers in telephonic connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
- H04M9/085—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using digital techniques
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of full silver association Modem transmission method, storage medium and terminal, methods described includes：Detect IP>The signal intensity for the transmission signal that TMD sides are sent, and the signal intensity is compared with goal-selling intensity；If the signal intensity is more than the goal-selling intensity, the first yield value by the signal intensity gain reduction to the goal-selling intensity is obtained；Using first yield value to IP>The transmission signal that TMD sides are sent carries out gain reduction.The present invention is by IP>The signal that TMD sides are sent carries out gain reduction to desired value, can so reduce the echo that two or four lines change the Modem signals that stage string comes up, improve the success rate of Modem data transmission.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of full silver association Modem transmission method, storage medium and end
End.
Background technology
VoIP（Voice over Internet Protocol, network telephone）System is a kind of based on IP phone, and
The technology of corresponding value-added service is released, its essence is by the voice signal of simulation after overcompression and package, with data packet
Form IP network road environment carry out speech sound signal transmission.The maximum advantage of the VoIP system is widely to use
The environment of global ip interconnection, there is provided more more than traditional business, more preferable service；Voice can be transmitted on ip networks, faxed, regarded
The business such as frequency and data.But in voip systems, Modem（Modem）There is echo in data transfer, and echo cancellor
Algorithm may exist to signal to be damaged, and this damage can cause data transmission fails.
The solution that VoIP system uses at present is by DSP Echo Canceller work(according to the Modem signals that detect
It can close, although will not so cause to damage to signal, improve the success rate of Modem data transfer.But work as Modem
It is excessive echo to be present in data transfer, can still result in data transmission fails.
Thus prior art could be improved and improve.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, there is provided a kind of full silver association Modem biography
Transmission method, storage medium and terminal, echo be present to solve existing full silver association Modem transmission and cause Modem data transmission fails
The problem of.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is as follows：
A kind of full silver association Modem transmission method, it includes：
Detect IP->The signal intensity for the transmission signal that TMD sides are sent, and by the signal intensity compared with goal-selling intensity
Compared with；
If the signal intensity is more than the goal-selling intensity, obtains and preset the signal intensity gain reduction to described
First yield value of target strength；
Using first yield value to IP->The transmission signal that TMD sides are sent carries out gain reduction.
The transmission method of the full silver association Modem, wherein, it is described to use first yield value to IP->TMD sides are sent
Transmission signal carry out gain reduction after also include：
When receiving IP- again>TMD sides send transmission signal when, by the current information intensity of the transmission signal received with
The signal intensity of a upper transmission signal is compared；
If the current signal strength is consistent with the signal intensity of a upper transmission signal, using first yield value to IP->
The transmission signal of TMD sides carries out gain reduction.
The transmission method of the full silver association Modem, wherein, it is described to use first yield value to IP->TMD sides are sent
Transmission signal carry out gain reduction after also include：
If the current signal strength and the signal intensity of a upper transmission signal are inconsistent, obtain the current signal strength
Gain reduction to the target strength current gain value；
First yield value is updated using the current gain value, and using the first yield value after renewal to IP->TMD sides
Transmission signal carry out gain reduction.
The transmission method of the full silver association Modem, wherein, the detection IP->The signal for the transmission signal that TMD sides are sent
Intensity, and include before the signal intensity is compared with goal-selling intensity：
When establishing Modem transmission, IP- is detected>The order for the transmission signal that TMD sides are sent, and the order is suitable with presetting
Sequence is compared；
If the order meets preset order, perform detection IP->The step of signal intensity for the transmission signal that TMD sides are sent.
The transmission method of the full silver association Modem, wherein, it is described to be sequentially in advance：
ANS signals first are detected from IP sides, then detect JBA signals；Or
ANS signals first are detected from TDM sides, then JBA signals are detected from IP sides.
The transmission method of the full silver association Modem, wherein, a length of 2.6-4s 2100Hz signals when the ANS signals are
Sound, a length of 120s 1350Hz+2545Hz signal sounds when the JBA signals are.
The transmission method of the full silver association Modem, it also includes：
Detect TMD->The signal intensity of the transmission signal of IP sides, and obtain the signal intensity gain reduction to goal-selling
Second yield value of intensity；
Using second yield value to TMD->The signal of IP sides carries out gain reduction, and sends the letter of the transmission after gain reduction
Number.
The transmission method of the full silver association Modem, wherein, the goal-selling intensity is -30dbov.
A kind of storage medium, it is stored with a plurality of instruction, and the instruction is suitable to be loaded by processor and performed as above any
Described full silver association Modem transmission method.
A kind of terminal, it includes：
Processor, it is adapted for carrying out each instruction；And
Storage device, suitable for storing a plurality of instruction, the instruction be suitable to load by processor and performed it is as above any described in it is complete
Silver association Modem transmission method.
Beneficial effect：Compared with prior art, the invention provides a kind of full silver association Modem transmission method, storage to be situated between
Matter and terminal, methods described include：Detect IP->The signal intensity for the transmission signal that TMD sides are sent, and by the signal intensity
Compared with goal-selling intensity；If the signal intensity is more than the goal-selling intensity, obtain the signal intensity
Gain reduction to the goal-selling intensity the first yield value；Using first yield value to IP->The biography that TMD sides are sent
Defeated signal carries out gain reduction.The present invention is by IP->The signal that TMD sides are sent carries out gain reduction to desired value, so may be used
To reduce the echo for the Modem signals that two or four lines conversion stage string comes up, the success rate of Modem data transmission is improved.
Brief description of the drawings
Fig. 1 is the flow chart of full silver association Modem provided by the invention transmission method preferred embodiment.
Fig. 2 is the structure principle chart of the preferred embodiment of terminal provided by the invention.
Embodiment
The present invention provides a kind of full silver association Modem transmission method, storage medium and terminal, for make the purpose of the present invention,
Technical scheme and effect are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.Should
Understand, specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is individual ", " described " and "the" may also comprise plural form.It is to be further understood that what is used in the specification of the present invention arranges
Diction " comprising " refer to the feature, integer, step, operation, element and/or component be present, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their groups.It should be understood that when we claim member
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " can include wireless connection or wireless coupling.It is used herein to arrange
Taking leave "and/or" includes whole or any cell and all combinations of one or more associated list items.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), there is the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, it should be understood that have with the context of prior art
The consistent meaning of meaning, and unless by specific definitions as here, idealization or the implication of overly formal otherwise will not be used
To explain.
Below in conjunction with the accompanying drawings, by the description to embodiment, the content of the invention is described further.
Fig. 1 is refer to, Fig. 1 is the flow chart of the preferred embodiment of full silver association Modem provided by the invention transmission method.
Methods described includes：
S100, detection IP->The signal intensity for the transmission signal that TMD sides are sent, and by the signal intensity and goal-selling intensity
Compare.
Specifically, the target strength is the desired value pre-set, and it can be obtained according to many experiments.
In the present embodiment, the target strength is preferably -30dbov, and the target strength causes full silver association Modem in 0-3.6 kilometers
Line length in the range of, Modem gains set the full silver association Modem data in scope -8db to -15db can transmission success.
Further, because only full silver association Modem is very sensitive to echo, it is necessary to which it is hypoechoic strong to drop to do Gain tuning
Degree, and commonly fax that do not make any adjustments can normal work by test with Modem.So as in detection IP->Send out TMD sides
A deterministic process can be included before the signal intensity for the transmission signal sent, the deterministic process is used to judge IP->TMD sides
Whether the transmission signal of transmission is full silver association Modem signals.
Exemplary, the detection IP->TMD sides send transmission signal signal intensity, and by the signal intensity with
Goal-selling intensity includes before comparing：
S01, when establish Modem transmission when, detect IP->TMD sides send transmission signal order, and by the order with it is pre-
If order is compared；
If S02, the order meet preset order, perform detection IP->The signal intensity for the transmission signal that TMD sides are sent
Step.
Specifically, the transmission of the complete silver-colored association Modem includes establishing, consults, transmits and terminate 4 stages；Consulting
The stage signal of transmission is useful signal, and for the harmful effect caused by adjustment that decays, by signal strength detection and gain
The process of adjustment is arranged on call establishment stage.In call establishment stage, calling party can send for the full silver association Modem transmission
JBA signals, callee can send ANS and JBA signals, so as to only need the order for detecting the signal that TMD side joints are received to can determine whether to build
Whether vertical is full silver association Modem transmission.Here for convenience of explanation, it is local terminal by TMD sides, IP sidelights are distal end.
Further, because the call establishment stage in full silver association Modem, calling party can send JBA signals, callee can send out
Send ANS and JBA signals.Accordingly, calling party judges that the foundation of full silver association Modem patterns can be：First from distally detecting ANS
Signal, then again from distally detecting JBA signals；Callee judges that the foundation of full silver association Modem patterns can be：First from local terminal
ANS signals are detected, then again from distally detecting JBA signals.
In the present embodiment, the local terminal can be calling party, can also callee, be sequentially in advance so as to described：First
ANS signals are detected from IP sides, then detect JBA signals；Or ANS signals first are detected from TDM sides, then detected from IP sides
To JBA signals.It is worth explanation, comparatively it, is distally distal end for local terminal that the local terminal and distal end, which are, for distal end, this
Hold as distal end.
In order to further illustrate the deterministic process of book silver-colored association's pattern entirely, by local terminal（TDM->IP）The ANS signals of detection and
JBA signals are denoted as ANS and JBA；Will distal end（IP->TDM）The ANS signals and JBA signals of detection are denoted as ANS_remote, JBA_
remote.The ANS a length of 2.6-4s when being, frequency are 2100HZ signal sound, and JBA is duration 120ms, frequency 1350HZ
+ 2545HZ signal sounds.Accordingly, calling party：ANS_remote+JBA, i.e., ANS signals first are detected from IP sides, then detected again
Then it is considered complete silver-colored association's pattern to JBA signals；Callee：ANS+JBA_remote, i.e., ANS signals first are detected from TDM sides, with
Detect that JBA signals are then considered complete silver-colored association's pattern from IP sides again afterwards.
If S200, the signal intensity are more than the goal-selling intensity, obtain the signal intensity gain reduction
To the first yield value of the goal-selling intensity.
Specifically, obtaining can be pre- by the signal intensity gain reduction to the first yield value of the goal-selling intensity
One gain reduction coefficient is first set, and the transmission information decayed using the gain reduction coefficient, and detects and declines
The signal intensity of transmission signal after subtracting, some signal intensities are not up to goal-selling intensity, then adjust attenuation coefficient until passing
The signal intensity of defeated signal reaches goal-selling intensity, and the attenuation coefficient is saved as into the first yield value.
S300, using first yield value to IP->The transmission signal that TMD sides are sent carries out gain reduction.
Specifically, it is determined that after the first yield value, using first yield value to IP->The transmission information of TMD sides is entered
Row gain reduction, and the transmission information after repeater gain decay, the echo of stage string can be so changed with two or four lines, is improved
The success rate of Modem data transfers.
Further, because each Modem calls the IP->There is change in the intensity for the signal that TMD sides are sent, so as to every
It is secondary to receive IP->The signal that TMD sides are sent, it can be determined that whether the first yield value preserved can be used to increase it
Benefit decay, it so can further reduce the echo of Modem signals, there is provided the success rate of Modem data transfers..Accordingly, institute
State using first yield value to IP->The transmission signal that TMD sides are sent also include after gain reduction：
S400, when receiving IP- again>It is during the transmission signal that TMD sides are sent, the current information of the transmission signal received is strong
Degree is compared with the signal intensity of a upper transmission signal；
If S500, the current signal strength are consistent with the signal intensity of a upper transmission signal, using first yield value
To IP->The transmission signal of TMD sides carries out gain reduction,；
If S600, the current signal strength and the signal intensity of a upper transmission signal are inconsistent, obtain the current letter
Number intensity gain decays to the current gain value of the target strength；
S700, first yield value is updated using the current gain value, and using the first yield value after renewal to IP->
The transmission signal of TMD sides carries out gain reduction
In one embodiment of the invention, in order to improve compatible row of the local terminal with distal end, for TMD->The transmission signal of IP sides
Gain reduction can also be detected, so when local terminal equipment identical with distal end use, it is only necessary to carry out a signal learning, so
It is more beneficial for improving the success rate of Modem transmission.Accordingly, the transmission method of the full silver association Modem, it also includes：
H10, detection TMD->The signal intensity of the transmission signal of IP sides, and obtain the signal intensity gain reduction to default
Second yield value of target strength；
H20, using second yield value to TMD->The signal of IP sides carries out gain reduction, and sends the biography after gain reduction
Defeated signal.
Specifically, the TMD->The determination that the signal gain of IP sides decays with the second yield value can use and IP->TMD
The transmission information identical method of side, is not being repeated here.
Further, because the wire length of local terminal, local terminal use the gain configuration of FXS ports and local terminal Modem gain
Configuration is all without changing, so the signal intensity that local terminal detects will not change.So that before local terminal is not changed, can
To use the second yield value to TMD->The signal of IP sides carries out gain reduction.And it need to only be established first after user's changes terminal
Connection when detection signal intensity, and goal-selling intensity is decayed to the intensity gain, and record second gain
Value, gain reduction is directly carried out to the water outlet signal according to second yield value when subsequently sending signal.
Present invention also offers a kind of storage medium, and it is stored with a plurality of instruction, and the instruction is suitable to be loaded by processor
And perform as above any full silver association Modem transmission method.
Present invention also offers a kind of terminal, as shown in Fig. 2 it includes at least one processor（processor）30（Figure
In 2 by taking a processor 30 as an example）；Display screen 31；And memory（memory）32, communication interface can also be included
（Communications Interface）33 and bus 34.Wherein, processor 30, display screen 31, memory 32 and communication connect
Mouth 33 can complete mutual communication by bus 34.Display screen 31 is arranged to show default user in initial setting mode
Guide interface.Communication interface 33 can transmit information.Processor 30 can call the logical order in memory 32, with execution
State the method in embodiment.
In addition, the logical order in above-mentioned memory 32 can be realized by the form of SFU software functional unit and is used as solely
Vertical production marketing in use, can be stored in a computer read/write memory medium.
Memory 32 is used as a kind of computer-readable recording medium, may be configured as storage software program, computer can perform
Program, programmed instruction or module as corresponding to the method in the embodiment of the present disclosure.Processor 30 is stored in memory by operation
Software program, instruction or module in 32, so as to perform function application and data processing, that is, realize the side in above-described embodiment
Method.
Memory 32 may include storing program area and storage data field, wherein, storing program area can storage program area, extremely
Application program needed for few One function；Storage data field can store uses created data etc. according to terminal device.This
Outside, memory 32 can include high-speed random access memory, can also include nonvolatile memory.For example, USB flash disk, movement
Hard disk, read-only storage (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), magnetic disc or CD etc. are a variety of can be with the medium or transitory memory medium of store program codes.
In addition, the detailed process that a plurality of instruction processing unit in above-mentioned storage medium and mobile terminal is loaded and performed exists
It has been described in detail in above-mentioned full silver association Modem transmission, has just no longer stated one by one herein.
In embodiment provided by the present invention, it should be understood that disclosed system and method, others can be passed through
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of the module, is only
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, device or unit
Connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in one and computer-readable deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are causing a computer
It is each that equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention
The part steps of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. it is various
Can be with the medium of store program codes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of full silver association Modem transmission method, it is characterised in that it includes：
Detect IP->The signal intensity for the transmission signal that TMD sides are sent, and by the signal intensity compared with goal-selling intensity
Compared with；
If the signal intensity is more than the goal-selling intensity, obtains and preset the signal intensity gain reduction to described
First yield value of target strength；
Using first yield value to IP->The transmission signal that TMD sides are sent carries out gain reduction.
2. full silver association Modem transmission method according to claim 1, it is characterised in that described to use first gain
Value is to IP->The transmission signal that TMD sides are sent also include after gain reduction：
When receiving IP- again>TMD sides send transmission signal when, by the current information intensity of the transmission signal received with
The signal intensity of a upper transmission signal is compared；
If the current signal strength is consistent with the signal intensity of a upper transmission signal, using first yield value to IP->
The transmission signal of TMD sides carries out gain reduction.
3. full silver association Modem transmission method according to claim 2, it is characterised in that described to use first gain
Value is to IP->The transmission signal that TMD sides are sent also include after gain reduction：
If the current signal strength and the signal intensity of a upper transmission signal are inconsistent, obtain the current signal strength
Gain reduction to the target strength current gain value；
First yield value is updated using the current gain value, and using the first yield value after renewal to IP->TMD sides
Transmission signal carry out gain reduction.
4. full silver association Modem transmission method according to claim 1, it is characterised in that the detection IP->TMD sides are sent
Transmission signal signal intensity, and include before the signal intensity is compared with goal-selling intensity：
When establishing Modem transmission, IP- is detected>The order for the transmission signal that TMD sides are sent, and the order is suitable with presetting
Sequence is compared；
If the order meets preset order, perform detection IP->The step of signal intensity for the transmission signal that TMD sides are sent.
5. full silver association Modem transmission method according to claim 4, it is characterised in that described to be sequentially in advance：
ANS signals first are detected from IP sides, then detect JBA signals；Or
ANS signals first are detected from TDM sides, then JBA signals are detected from IP sides.
6. full silver association Modem transmission method according to claim 5, it is characterised in that the ANS signals are a length of when being
2.6-4s 2100Hz signal sounds, a length of 120s 1350Hz+2545Hz signal sounds when the JBA signals are.
7. full silver association Modem transmission method according to claim 1, it is characterised in that it also includes：
Detect TMD->The signal intensity of the transmission signal of IP sides, and obtain the signal intensity gain reduction to goal-selling
Second yield value of intensity；
Using second yield value to TMD->The signal of IP sides carries out gain reduction, and sends the letter of the transmission after gain reduction
Number.
8. according to any full silver association Modem of claim 1-7 transmission method, it is characterised in that the goal-selling is strong
Spend for -30dbov.
9. a kind of storage medium, it is characterised in that it is stored with a plurality of instruction, and the instruction is suitable to be loaded and performed by processor
The transmission method of full silver association Modem as described in claim 1-8 is any.
10. a kind of terminal, it is characterised in that it includes：
Processor, it is adapted for carrying out each instruction；And
Storage device, suitable for storing a plurality of instruction, the instruction is suitable to be loaded by processor and performed as claim 1-8 is any
Described full silver association Modem transmission method.
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| CN201710547965.6A CN107360337A (en) | 2017-07-06 | 2017-07-06 | A kind of full silver association Modem transmission method, storage medium and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710547965.6A CN107360337A (en) | 2017-07-06 | 2017-07-06 | A kind of full silver association Modem transmission method, storage medium and terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602060A (en) * | 2019-08-23 | 2019-12-20 | 深圳震有科技股份有限公司 | Method, terminal and system for obtaining gain value |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305591A (en) * | 2005-10-31 | 2008-11-12 | 甲骨文国际公司 | Dynamic call characteristic control on a per call basis |
| US20120300646A1 (en) * | 2011-05-24 | 2012-11-29 | International Business Machines Corporation | Voice over internet protocol (voip) session quality |
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2017
- 2017-07-06 CN CN201710547965.6A patent/CN107360337A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305591A (en) * | 2005-10-31 | 2008-11-12 | 甲骨文国际公司 | Dynamic call characteristic control on a per call basis |
| US20120300646A1 (en) * | 2011-05-24 | 2012-11-29 | International Business Machines Corporation | Voice over internet protocol (voip) session quality |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602060A (en) * | 2019-08-23 | 2019-12-20 | 深圳震有科技股份有限公司 | Method, terminal and system for obtaining gain value |
| CN110602060B (en) * | 2019-08-23 | 2021-12-10 | 深圳震有科技股份有限公司 | Method, system, terminal and readable storage medium for obtaining gain value |
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Application publication date: 20171117 |