CN206948363U - A kind of digital modulation device - Google Patents
A kind of digital modulation device Download PDFInfo
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Abstract
A kind of digital modulation device, the device include：Embeded processor, FPGA and the DAC being sequentially connected.Wherein, FPGA includes：Parameter configuration unit, selecting unit, modulation source module, modulation control unit, carrier wave memory and multiplier.Because the parameter configuration unit of the application is according to the expectation type of waveform and supplemental characteristic of input, modulation source parameter, modulation wave parameter, carrier waveform data are exported respectively；Selecting unit is according to modulation source parameter, select different modulation source and modulating mode, modulation control unit is according to modulation wave parameter, it is determined that frequency control word, phase information and the attenuation coefficient of modulation, are modulated accordingly to carrier waveform, the digital modulation of different type, different systems can be achieved, a kind of so that data modulation of modulating device compatibility multiple types multi-system, meet different needs, this is simple in construction, compact, and the logical resource of consumption is less.
Description
Technical field
The application is related to digital modulation technique field, and in particular to a kind of digital modulation device.
Background technology
Unmodulated digital baseband signal can transmit in some wire message way such as local telephone network optical cable, but for wireless, micro-
Ripple and these channels of satellite typically band communication channel, baseband signal can not directly be transmitted in these band communication channels, so
Digital baseband signal must be modulated.
Digital modulation is the important method of modern communicationses, and it has many advantages compared with analog-modulated.Digital modulation has
More preferable interference free performance, stronger anti-channel loss, and more preferable security.Digital modulation is made using digital baseband signal
Go to modulate carrier wave for modulated signal, obtain modulating wave, different according to the type of parameter so as to control some parameters of carrier wave, bag
Include the digital modulation pattern of the types such as range parameter modulation ASK, phase parameter modulation PSK, frequency parameter modulation FSK.In numeral
In modulation, modulated signal can be expressed as the time series of symbol or pulse, wherein each symbol can have m kind finite states,
And each symbol can be represented using n-bit.
In the prior art, for different types of digital modulation, there are different prior arts, such as 2FSK, can
To produce the carrier wave of 2 frequencies using FPGA, the switching of 2 carrier waves is controlled using modulating wave.Such as 2ASK, FPGA can be used
Carrier wave is produced, the output of carrier wave is controlled with not exporting using modulating wave；Digital modulation for different systems, also have different
Prior art；Such as 4ASK, FPGA can be used to produce carrier wave, and the input using carrier wave and modulating wave as multiplier,
By the amplitude of the data control carrier wave output of modulating wave.But existing digital modulation scheme is relatively more independent, function is relatively simple, it is more difficult to
Realize the digital modulation of various modes and multi-system.
The content of the invention
The application provides a kind of digital modulation device, the digital modulation of various modes and multi-system can be achieved, relative to biography
The digital modulation scheme of system, the structure is simpler, and the logical resource of consumption is less.
The application provides a kind of digital modulation device, including embeded processor, FPGA and DAC, the FPGA include：
Parameter configuration unit, for receive and according to embeded processor input expectation type of waveform and supplemental characteristic,
Modulation source parameter, modulation wave parameter and carrier waveform data, the modulation source parameter is exported respectively to comprise at least：Modulating frequency fm
And modulation type, the modulation wave parameter comprise at least：Carrier frequency f and current system M；
Selecting unit, it is connected with parameter configuration unit, for receiving the modulation source parameter of parameter configuration unit output, root
According to the modulation source parameter, modulation source and modulating mode are selected, and exports corresponding modulating wave data, the modulating mode bag
Include：MFSK, MASK, MPSK and DPSK；
Source module is modulated, is connected with selecting unit, for providing modulation source so that the selecting unit selects, is available for selecting
The modulation source selected includes：External modulation source, inner modulation source and User Defined modulation source；
Modulation control unit, its first input end are connected with parameter configuration unit, its second input and selecting unit
It is connected, the modulating wave data that the modulation wave parameter and selecting unit exported according to parameter configuration unit exports, it is determined that modulation
Frequency control word, phase information and attenuation coefficient；
Carrier wave memory, its first input end are connected with parameter configuration unit, receive the parameter configuration unit output
Carrier waveform data and stored, its second input is connected with modulation control unit, receives the modulation control list
The phase information of member output, using the phase information as address, carrier waveform data corresponding to reading, and by the carrier waveform
Data output；
Multiplier, its first input end are connected with modulation control unit, and its second input is connected with carrier wave memory
Connect, the carrier waveform data exported according to the attenuation coefficient that modulation control unit exports with carrier wave memory, obtain it is expected waveform
Data, and the expectation Wave data is exported to DAC.
In some embodiments, the FPGA also includes：Differential encoder, the differential encoder be connected to selecting unit with
Between modulation control unit, when modulating mode is DPSK, the modulating wave data that differential encoder exports to selecting unit are advanced
Row differential coding, it is then forwarded to modulation control unit.
In some embodiments, parameter configuration unit also exports self-defined modulating wave data.
In some embodiments, the modulation source module includes：
Pattern converter, for providing external modulation source, it receives external modulation input signal, the highest supported according to system
System Mmax, external modulation input signal is converted to the Nmax bit modulation wave number evidences for meeting form, wherein, Nmax=
log2Mmax；
Wave memory is modulated, for providing self-defined modulation source, it is connected with parameter configuration unit, receives parameter configuration
Self-defined modulating wave data that unit is sent simultaneously are stored；
M-sequence generator, for providing inner modulation source, it is connected with parameter configuration unit, according to parameter configuration list
The modulating frequency fm of member output, export the pseudorandom modulation data of Nmax bits.
In some embodiments, the modulation source module also includes：Modulation source clock generator,
The modulation source clock generator receives the modulating frequency fm parameters that parameter configuration unit is sent, and generation frequency is fm
Clock, as M sequence generator and modulation wave memory reference clock.
In some embodiments, the modulation wave memory or/and carrier wave memory can use FPGA internal storages,
The plug-in memories of FPGA can be used.
In some embodiments, the modulation control unit includes：
Frequency selector, for according to different modulating modes, carrier frequency f and current system M, sending corresponding frequency
Control word is to phase processor；
Phase processor, for cumulative frequency control word and corresponding accumulated phase is calculated, and according to accumulated phase and just
Beginning phase, calculate and export the phase information to carrier wave memory；
Attenuation coefficient generation unit, for according to different modulating modes and current system M, sending corresponding attenuation coefficient
To the multiplier.
In some embodiments, the phase processor includes：
Phase accumulator, for cumulative frequency control word and calculate corresponding accumulated phase；
Initial phase generation module, for according to different modulating modes, configuring corresponding initial phase；
Adder, its first end are connected with phase accumulator, and its second end is connected with initial phase generation module, root
According to the accumulated phase of phase accumulator output and the initial phase of initial phase generation configuration, calculate and export the phase information
To carrier wave memory.
According to above-described embodiment, because the parameter configuration unit of the application is according to the expectation type of waveform and parameter number of input
According to exporting modulation source parameter, modulation wave parameter, carrier waveform data respectively；Selecting unit is different according to modulation source parameter, selection
Modulation source and modulating mode, modulation control unit according to modulation wave parameter, it is determined that modulation frequency control word, phase information and
Attenuation coefficient, carrier waveform is modulated accordingly, the digital modulation of different type, different systems can be achieved so that be a kind of
The data modulation of modulating device compatibility multiple types multi-system, meets different needs, this is simple in construction, compact, consumption
Logical resource is less.
Brief description of the drawings
Fig. 1 is a kind of digital modulation device structural representation that the application provides；
Fig. 2 is a kind of differential encoder schematic diagram of embodiment；
Fig. 3 is the selecting unit and modulation source module diagram of a kind of embodiment；
Fig. 4 is a kind of modulation control cellular construction schematic diagram of embodiment；
Fig. 5 is a kind of phase processor structural representation of embodiment.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.Wherein different embodiments
Middle similar component employs associated similar element numbers.In the following embodiments, many detailed descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Certain operations that please be related are not shown in the description or description, and this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, be described in detail these associative operations be not it is necessary, they
The general technology knowledge of description and this area in specification can completely understand associative operation.
In the present embodiment, the structure of analog channel is added using embeded processor, FPGA, the numeral to realize general is adjusted
Generation scheme processed.Wherein, embeded processor mainly completes user mutual, arrange parameter, is received by modes such as USB, network interfaces
The modulation waveform data of user；FPGA realizes digital modulation, produces digital modulation waveform by producing modulating wave and carrier wave；
Finally export modulation waveform by DAC conversions and analog channel again.In other embodiments, embeded processor and FPGA can
To use the realization of SOC on piece, so as to simplify hardware circuit.
Fig. 1, a kind of digital modulation device that the application provides are refer to, the device includes：The embedded place being sequentially connected
Manage device 1, FPGA2 and DAC3.Wherein, FPGA2 includes：Parameter configuration unit 10, selecting unit 20, modulation source module 21, modulation
Control unit 40, carrier wave memory 30 and multiplier 50.
Parameter configuration unit 10, for the expectation type of waveform and parameter number for receiving and being inputted according to embeded processor 1
According to exporting modulation source parameter, modulation wave parameter and carrier waveform data respectively.Modulation source parameter comprises at least：Modulating frequency fm
And modulation type, wherein, modulation type is divided into range parameter modulation, phase parameter modulation and frequency parameter modulation etc..The modulation
Wave parameter comprises at least：Carrier frequency f and current system M.In some embodiments, parameter configuration unit 10 also exports self-defined tune
Wave number evidence processed,
Selecting unit 20 is connected with parameter configuration unit 10, for receiving the modulation source ginseng of the output of parameter configuration unit 10
Number, according to modulation source parameter, modulation source and modulating mode are selected, and export corresponding modulating wave data to modulation control unit
40.In some embodiments, selectable modulation source includes：External modulation source, inner modulation source and User Defined modulation source；Can
The modulating mode of selection includes：MFSK, MASK, MPSK and DPSK.Wherein,
MASK represents multi-system digital amplitude modulation, and digital information is represented with a variety of amplitudes of carrier wave；
MFSK represents multi-system digital frequency modulation, and a variety of digital informations are represented with multiple different carrier frequencies；
MPSK represents multi-system digital phase modulation, and digital information is characterized with a variety of out of phase states of carrier wave；
DPSK represents differential phase keying (DPSK), is transmitted using the change of carrier wave relative phase between symbol before and after modulated signal
Information.
When selectable modulating mode includes DPSK, FPGA2 also includes：Differential encoder 60, differential encoder 60 connect
It is connected between selecting unit 20 and modulation control unit 40, for when modulating mode is DPSK, being exported to selecting unit 20
Modulating wave data first carry out differential coding, are then forwarded to modulation control unit 40.
Modulation source module 21 is connected with selecting unit 20, is selected for providing modulation source unit 20 for selection, the tune
The exportable bit wide in source processed is the modulating wave data of Nmax bits, including：External modulation source, inner modulation source and User Defined are adjusted
Source processed.
It should be noted that if modulation source is User Defined modulating wave, customized modulating wave data are inputting
Before FPGA2, embeded processor 1 by the modulating wave data of N-bit, mends 0 by low level, expands to Nmax bits.Also
It is to say, if the modulation source of user's selection is self-defined modulating wave, then embeded processor 1 is needed the user of N-bit certainly
Modulating wave data are defined, 0 is mended by low level, expands to Nmax bits；If modulation source is not self-defined modulation source, for selection
The modulating wave data that unit 20 is sending, bit wide is Nmax bits, FPGA2 intercept its preceding N-bit data, mend 0 by low level, expand
Open up as Nmax bits.
Illustrate the preceding N-bit data that intercept the modulating wave data that bit wide is Nmax bits why below, low level is mended
(Nmax-N) individual 0, then become Nmax bits.Citing,
If maximum system Mmax=8, Nmax=3, the system of current setting is M=2, N=1.Assuming that it is modulation source m-sequence
Generator (inner modulation source), then the modulation source by random output data 000,001,010,011,100,101,110,111,
Up to 8 kinds of random data；By intercepting 1 bit data before random data, low level mends (3-1) individual 0, and now random data just becomes
Into 000 or 100, random data only has 2 kinds of situations, meets current setting M=2's.
The first input end of modulation control unit 40 is connected with parameter configuration unit 10, and it is defeated to receive parameter configuration unit 10
The modulation wave parameter gone out, its second input are connected with selecting unit 20, receive the modulating wave data that selecting unit 20 exports,
According to modulation wave parameter and modulating wave data, it is determined that frequency control word FTW, phase information and the attenuation coefficient of modulation.
The first input end of carrier wave memory 30 is connected with parameter configuration unit 10, receives parameter configuration unit 10 and exports
Carrier waveform data and stored, its second input is connected with modulation control unit 40, receive modulation control unit
The phase informations of 40 outputs, using the phase information as address, carrier waveform data corresponding to reading, and by the carrier waveform number
According to output.
The first input end of multiplier 50 is connected with modulation control list 40, receives the decay of the output of modulation control unit 40
Coefficient, its second input are connected with carrier wave memory, the carrier waveform data of carrier wave memory output are received, by carrier wave ripple
Graphic data is multiplied with attenuation coefficient, obtains it is expected Wave data, and the expectation Wave data is exported to DAC3.
As can be seen here, in the application, parameter configuration unit 10 is according to the expectation type of waveform and supplemental characteristic of input, difference
Export modulation source parameter, modulation wave parameter, carrier waveform data；Selecting unit 20 selects different tune according to modulation source parameter
Source processed and modulating mode, modulation control unit 40 is according to modulation wave parameter, it is determined that the frequency control word FTW of modulation, phase information
And attenuation coefficient, carrier waveform is modulated accordingly, the digital modulation of different type, different systems can be achieved so that one
The data modulation of kind modulating device compatibility multiple types multi-system, meets different needs, and this is simple in construction, compact, consumption
Logical resource it is less.
With reference to figure 3, in some embodiments, modulation source module 21 includes：Pattern converter 22, modulation wave memory 23 and M
Sequencer 24.In an embodiment, modulation source module 21 also includes modulation source clock generator 25, is specifically described below.
Modulation source clock generator 25 receives the modulating frequency fm that sends of parameter configuration unit 10, produce frequency be fm when
Clock, as m-sequence generator 23 and the reference clock of modulation wave memory 21.
Pattern converter 22 is used to provide external modulation source, and it receives external modulation input signal, is supported most according to system
High system Mmax, external modulation input signal is converted to the Nmax bit modulation wave number evidences for meeting form, wherein, Nmax=
log2Mmax.Wherein, the external modulation input signal is sampled by ADC4, inputs to pattern converter 22.
Modulation wave memory 23 is used to provide self-defined modulation source, and it is connected with parameter configuration unit 10, receives parameter
Self-defined modulating wave data that dispensing unit 10 is sent simultaneously are stored.
M-sequence generator 24 is used to provide inner modulation source, and it is connected with parameter configuration unit 10, according to parameter configuration
The modulating frequency fm that unit 10 is sent, the pseudorandom modulation data of Nmax bits are exported to selecting unit 20.It is pointed out that
By the use of M sequence generator 23 as inner modulation source, random modulating wave is produced.Relative to the modulating wave of traditional fixation, more
Close to real application.
In some embodiments, FPGA internal storages can be used by modulating wave memory 23 and carrier wave memory 30, also may be used
Using memory plug-in FPGA, so as to expand memory capacity, to realize better performance and using effect, but to use plug-in
Memory can make it that hardware circuit is more complicated.
With reference to figure 4, in some embodiments, modulation control unit 40 includes：Frequency selector 41, phase processor 42 and decline
Subtract coefficient generation unit 43.
Frequency selector 41 is used for according to different modulating modes, carrier frequency f and current system M, sends corresponding frequency
Rate control word FTW is to phase processor 42.
Phase processor 42 is used for cumulative frequency control word FTW and calculates corresponding accumulated phase, and according to accumulated phase
And initial phase, calculate and output phase information is to carrier wave memory.With reference to figure 5, in an embodiment, phase processor 42 wraps
Include：Phase accumulator 421, initial phase generation module 422 and adder 423.Phase accumulator 421 controls for cumulative frequency
Word FTW and the corresponding accumulated phase of calculating, such as, the phase that current time phase accumulator 421 exports is P, then when next
Clock exports P+FTW；Initial phase generation module 422 is used for according to different modulating modes, configures corresponding initial phase；Addition
The first end of device 423 is connected with phase accumulator 421, and its second end is connected with initial phase generation module 422, according to phase
The initial phase that the accumulated phase and initial phase generation module 422 that bit accumulator 421 exports configure, is calculated and output phase is believed
Cease to carrier wave memory.
Attenuation coefficient generation unit 43 is used for according to different modulating modes and current system M, sends corresponding decay
Coefficient is to multiplier 50.
Specifically, for frequency selector 41：
When modulating mode is not MFSK, carrier frequency f that frequency selector 41 directly sends parameter configuration unit 10
Corresponding frequency control word is transmitted directly to phase processor 42；
When modulating mode is MFSK, frequency selector 41 first receives the M FREQUENCY CONTROL that parameter configuration unit 10 is sent
Word, Mmax frequency control word is expanded to, further according to the value of Nmax bits, frequency control word corresponding to selection, be sent to
Phase processor 42；In an embodiment, M frequency control word is expanded into Mmax frequency control word, can be slotting by first calculating
It is worth multiple Mmax/M, Mmax/M identical frequency control words is then inserted after each frequency control word and are realized.Such as：M=4,
Mmax=16, M FTW are ftw1, ftw2, ftw3, ftw4, be changed into after interpolation ftw1, ftw1, ftw1, ftw1, ftw2,
ftw2、ftw2、ftw2、ftw3、ftw3、ftw3、ftw3、ftw4、ftw4、ftw4、ftw4；If modulation source is not self-defined
Modulation source, before frequency control word corresponding to selection, also need to intercept the preceding N-bit for the modulating wave data that selecting unit 20 is sent
Data, 0 is mended by low level, is extended to Nmax bits.
Specifically, for phase processor 42：
When modulating mode is not MPSK, DPSK, initial phase generation module 422 directly configures initial phase as 0 or pre-
If fixed phase value；
When modulating mode is MPSK or DPSK, it is Mmax that initial phase generation module 422, which first generates a regular length,
Phase meter, the phase meter isThen according to the value of Nmax bits, choosing
Corresponding initial phase is taken, is sent to adder 423.If modulation source is not self-defined modulation source, first corresponding to selection
Before beginning phase, also need to intercept the preceding N-bit data for the modulating wave data that selecting unit 20 is sent, mend 0 by low level, be extended to
Nmax bits.
Specifically, for attenuation coefficient generation unit 43：
When modulating mode is not MASK, attenuation coefficient generation unit 43 directly sends attenuation coefficient 1 to multiplier 50.
When modulating mode is MASK, attenuation coefficient generation unit 43 receives the current system that parameter configuration unit 10 is sent
M, then the modulating wave data that selecting unit 20 is sent are received, N-bit modulating wave data divided by (M-1), obtained decay before interception
Coefficient, it is sent to multiplier 50.
In summary, user can select different modulating modes by the digital modulation device of the application, set difference to enter
M processed and selection different modulating source, when being modulated, it is necessary to set carrier frequency f, frequency of modulated wave fm, if MFSK moulds
Formula, it is also necessary to which M Hopping frequencies are set.According to the setting of user, parameter configuration unit 10 is matched somebody with somebody to modulation source clock generator 25
Timing parameter is put, it is produced the clock that frequency is fm；Parameter configuration unit 10 configures modulation source parameter to selecting unit 20, makes
Corresponding modulation source can be selected as modulation waveform data, if self-defined according to the setting of user by obtaining selecting unit 20
Modulating wave, parameter configuration unit 10 send modulating wave data and give modulation wave memory 23；Parameter configuration unit 10 sends carrier wave ripple
Shape is to carrier waveform memory 30；The modulating mode that parameter configuration unit 10 is set according to user is frequency selector 41, initially
Phase generating module 422, the configuration parameter of attenuation coefficient generation unit 43, carry out corresponding range parameter modulation, phase parameter is adjusted
System or frequency parameter modulation, can be achieved to carrier wave different type, the digital modulation of different systems.
Use above specific case is illustrated to the present invention, is only intended to help and is understood the present invention, not limiting
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make some simple
Deduce, deform or replace.
Claims (8)
1. a kind of digital modulation device, including embeded processor, FPGA and DAC, it is characterised in that the FPGA includes：
Parameter configuration unit, for the expectation type of waveform and supplemental characteristic for receiving and being inputted according to embeded processor, difference
Output modulation source parameter, modulation wave parameter and carrier waveform data, the modulation source parameter comprise at least：Modulating frequency fm and tune
Type processed, the modulation wave parameter comprise at least：Carrier frequency f and current system M；
Selecting unit, it is connected with parameter configuration unit, for receiving the modulation source parameter of parameter configuration unit output, according to institute
Modulation source parameter is stated, selects modulation source and modulating mode, and exports corresponding modulating wave data, the modulating mode includes：
MFSK, MASK, MPSK and DPSK；
Source module is modulated, is connected with selecting unit, it is alternative for providing modulation source so that the selecting unit selects
Modulation source includes：External modulation source, inner modulation source and User Defined modulation source；
Modulation control unit, its first input end are connected with parameter configuration unit, and its second input is connected with selecting unit
Connect, the modulating wave data that the modulation wave parameter and selecting unit exported according to parameter configuration unit exports, it is determined that the frequency of modulation
Control word, phase information and attenuation coefficient；
Carrier wave memory, its first input end are connected with parameter configuration unit, receive the load of the parameter configuration unit output
Waveform data is simultaneously stored, and its second input is connected with modulation control unit, and it is defeated to receive the modulation control unit
The phase information gone out, using the phase information as address, carrier waveform data corresponding to reading, and by the carrier waveform data
Output；
Multiplier, its first input end are connected with modulation control unit, and its second input is connected with carrier wave memory, root
According to the attenuation coefficient and the carrier waveform data of carrier wave memory output of the output of modulation control unit, obtain it is expected Wave data,
And the expectation Wave data is exported to DAC.
2. device as claimed in claim 1, it is characterised in that the FPGA also includes：Differential encoder, the differential coding
Device is connected between selecting unit and modulation control unit, and when modulating mode is DPSK, differential encoder is defeated to selecting unit
The modulating wave data gone out first carry out differential coding, are then forwarded to modulation control unit.
3. device as claimed in claim 1, it is characterised in that parameter configuration unit also exports self-defined modulating wave data.
4. device as claimed in claim 3, it is characterised in that the modulation source module includes：
Pattern converter, for providing external modulation source, it receives external modulation input signal, the highest system supported according to system
Mmax, external modulation input signal is converted to the Nmax bit modulation wave number evidences for meeting form, wherein, Nmax=log2Mmax；
Wave memory is modulated, for providing self-defined modulation source, it is connected with parameter configuration unit, receives parameter configuration unit
The self-defined modulating wave data sent simultaneously are stored；
M-sequence generator, for providing inner modulation source, it is connected with parameter configuration unit, defeated according to parameter configuration unit
The modulating frequency fm gone out, export the pseudorandom modulation data of Nmax bits.
5. device as claimed in claim 4, it is characterised in that the modulation source module also includes：Modulation source clock generator,
The modulation source clock generator receives the modulating frequency fm parameters that parameter configuration unit is sent, produce frequency be fm when
Clock, as M sequence generator and the reference clock of modulation wave memory.
6. device as claimed in claim 4, it is characterised in that the modulation wave memory or/and carrier wave memory can make
With FPGA internal storages, the plug-in memories of FPGA can also be used.
7. device as claimed in claim 1, it is characterised in that the modulation control unit includes：
Frequency selector, for according to different modulating modes, carrier frequency f and current system M, sending corresponding FREQUENCY CONTROL
Word is to phase processor；
Phase processor, for cumulative frequency control word and corresponding accumulated phase is calculated, and according to accumulated phase and initial phase
Position, calculates and exports the phase information to carrier wave memory；
Attenuation coefficient generation unit, for according to different modulating modes and current system M, sending corresponding attenuation coefficient to institute
State multiplier.
8. device as claimed in claim 7, it is characterised in that the phase processor includes：
Phase accumulator, for cumulative frequency control word and calculate corresponding accumulated phase；
Initial phase generation module, for according to different modulating modes, configuring corresponding initial phase；
Adder, its first end are connected with phase accumulator, and its second end is connected with initial phase generation module, according to phase
The accumulated phase of bit accumulator output and the initial phase of initial phase generation configuration, calculate and export the phase information to load
Wave memory.
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| CN113948030B (en) * | 2021-12-20 | 2022-04-01 | 成都利普芯微电子有限公司 | Display signal generating device, driving device and display device |
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Address after: 518000 Guangdong Province, Baoan District, Baoan District, Xin'an Street, Xingdong Community, 68 District, Antongda Industrial Factory Area, 4 factories, 3 floors, 5 office buildings, 1-3 floors Patentee after: Shenzhen dingyang Technology Co., Ltd Address before: Shenzhen City, Guangdong province Baoan District 518000 District 68 road left three Antongda Industrial Park, 4 floor Patentee before: Shenzhen Siglent Technologies Co., Ltd. |