CN114328068A - Novel burn and write and test integration device - Google Patents
Novel burn and write and test integration device Download PDFInfo
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- CN114328068A CN114328068A CN202111489657.5A CN202111489657A CN114328068A CN 114328068 A CN114328068 A CN 114328068A CN 202111489657 A CN202111489657 A CN 202111489657A CN 114328068 A CN114328068 A CN 114328068A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the technical field of electronic information, in particular to a novel programming and testing integrated device; novel burn and write and test integrated device is including conversion control module, level conversion module, power module, general interface, two wire jumper caps, signal transmission direction control module, seven core interfaces and fourteen core interfaces, through novel design, realize simultaneously burning on a section device, test two kinds of functions, and let seven core interfaces and fourteen core interface signals communicate with each other, the circuit design of integrated device has been simplified to a certain extent, the problem of putting up the debugging line has been solved, make to connect more stable, signal transmission is safer.
Description
Technical Field
The invention relates to the technical field of electronic information, in particular to a novel programming and testing integrated device.
Background
In the production process of the intelligent identity key, when a program is programmed, a special programming tool is needed, although the special programming tool is a general product, the design of the special programming tool still cannot be completely compatible with the intelligent identity key, when the program is programmed, a plurality of debugging lines need to be set up, the connection is not stable enough, in the programming process, programming failure is often caused due to deviation of the debugging lines or poor contact, the production efficiency is influenced, in the test process, because a special test tool is not provided, a mode of accompanying with a complete machine for testing is adopted, but if the intelligent identity key is produced independently, because the complete machine is not provided, the test is difficult; the whole machine is used for accompanying measurement, so that the whole machine is lost to a certain extent, and the production cost is increased.
With the fact that smart identity keys are widely used and orders are more and more, how to reduce production cost and improve production efficiency is more and more urgent.
Disclosure of Invention
The invention aims to provide a novel programming and testing integrated device to solve the problem that programming and testing are difficult to realize simultaneously in the prior art.
In order to achieve the purpose, the invention provides a novel programming and testing integrated device, which comprises a conversion control module, a level conversion module, a power supply module, a universal interface, two jumper caps, a signal transmission direction control module, a seven-core interface and a fourteen-core interface,
the seven-core interface is in signal communication with the fourteen-core interface, the seven-core interface is used for installing a seven-core intelligent identity key, the fourteen-core interface is used for installing a fourteen-core intelligent identity key, the signal transmission of the seven-core interface and the seven-core intelligent identity key and the signal transmission of the fourteen-core interface and the fourteen-core intelligent identity key both adopt TTL levels,
different pins of the conversion control module are matched with the two jumper caps to realize the function adjustment of the seven-core interface and the fourteen-core interface,
the power supply module is used for controlling the on-off of an external power supply and converting the voltage of the external power supply and is used by the level conversion module, the seven-core intelligent identity key and the fourteen-core intelligent identity key single board,
the signal transmission direction control module is used for solving the switching problem between one channel and two channels between a single-channel bidirectional signal and a signal passing through the level conversion module and a double-channel unidirectional signal of TTL level signals outside the seven-core intelligent identity key and the fourteen-core intelligent identity key,
the universal interface is configured to be connected with a computer provided with upper computer software through a USB (universal serial bus) interface line, and to input and transmit signals to and from the integrated device by using an RS232 level.
And the level conversion module is used for realizing the bidirectional conversion between the RS232 level and the TTL level.
In an integrated device, designed seven cores and fourteen cores two interfaces, be used for installing the intelligent identity key of two kinds of interface forms respectively, two interface signals communicate with each other, simplified integrated device's circuit design to a certain extent, this partial circuit design has solved the problem of putting up the debugging line for connect more stably, signal transmission is safer, the jumper wire cap is as select switch, in an integrated device, dials the switch to different positions, realizes different transmission lines, and then realizes respectively burning, test two kinds of functions.
The fourteen-core interface comprises a fourteen-core socket X4, a single-board socket X1, a single-board socket X2 and a single-board socket X3, the single-board socket X1, the single-board socket X2 and the single-board socket X3 are used for installing a control board of the fourteen-core intelligent identity key on the integrated device so as to realize the programming and testing of the fourteen-core intelligent identity key control board single-board level and screen out products with hardware problems, and the fourteen-core socket X4 is used for installing the fourteen-core intelligent identity key on the integrated device.
The single board socket X1, single board socket X2 and single board socket X3 are the single board socket that designs to fourteen core intelligent identity keys, and three sockets are used together and can be installed fourteen core intelligent identity key's control panel on integrated device, realize fourteen core intelligent identity key control panel single board level burn, test, the realization of single board level burn test function can be screened out the product that has the hardware problem at the single board level, reprocess in advance, the cost of reprocessing has been reduced, production efficiency has also been improved to a certain extent.
The fourteen-core socket X4 comprises an X4-C pin, an X4-B pin and an X4-H pin, wherein when the whole machine level is burnt, the X4-C pin is used for receiving signals transmitted by the integrated device and outputting the signals to the integrated device through the X4-B pin, and the X4-H pin is used for bidirectionally transmitting signals when the whole machine level is tested.
When a fourteen-core intelligent identity key is programmed, signals are transmitted in a two-channel one-way mode, if the programming is carried out on the whole machine level, the whole machine receives the signals transmitted by the integrated device through the X4-C pin, and the signals are output to the integrated device through the X4-B pin; if the single-board level programming is carried out, the single board receives signals transmitted by the integrated device through the X2-1 pin and outputs signals to the integrated device through the X2-2 pin.
The single board socket X1 comprises an X1-3 pin, and the X1-3 pin transmits signals in a two-way mode during single board level testing.
The single board socket X2 comprises an X2-1 pin and an X2-2 pin, and when the single board is programmed, the single board receives signals transmitted by the integrated device through the X2-1 pin and outputs the signals to the integrated device through the X2-2 pin.
During single-board level programming, the single board receives signals transmitted by the integrated device through the X2-1 pin and outputs signals to the integrated device through the X2-2 pin
The seven-core interface comprises a seven-core socket XS1, a single board socket XS2 and a single board socket XS3, the single board socket XS2 and the single board socket XS3 are used for installing a control board of the seven-core intelligent identity key on an integrated device so as to realize single-board level programming and testing of the seven-core intelligent identity key control board, and the seven-core socket XS1 is used for installing the seven-core intelligent identity key on the integrated device so as to realize complete-level programming and testing of the seven-core intelligent identity key.
The seven-core socket XS1 is used for installing a seven-core intelligent identity key on an integrated device to realize whole-machine-level programming and testing of the seven-core intelligent identity key, the single-board socket XS2 and the single-board socket XS3 are designed for the seven-core intelligent identity key, the two sockets are used together to install a control board of the seven-core intelligent identity key on the integrated device to realize single-board-level programming and testing of the seven-core intelligent identity key control board and single-board-level programming and testing functions, products with hardware problems can be screened out on a single-board level, repair is carried out in advance, repair cost is reduced, and production efficiency is improved to a certain extent.
According to the novel programming and testing integrated device, two functions of programming and testing are simultaneously realized on the device through a novel design, the seven-core interface is in signal communication with the fourteen-core interface, the circuit design of the integrated device is simplified to a certain extent, the problem of building a debugging line is solved, the connection is more stable, and the signal transmission is safer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a novel programming and testing integrated device provided by the present invention.
Fig. 2 is a circuit diagram of a fourteen-core smart identity key interface of the novel programming and testing integrated device provided by the invention.
Fig. 3 is a circuit diagram of a seven-core smart identity key interface of the novel programming and testing integrated device provided by the invention.
FIG. 4 is a circuit diagram of a signal transmission direction control module of the novel programming and testing integrated device provided by the invention.
FIG. 5 is a circuit diagram of a level shift module of the novel programming and testing integrated device provided by the present invention.
FIG. 6 is a circuit diagram of a power module of the novel programming and testing integrated device provided by the invention.
FIG. 7 is a circuit diagram of a universal interface module of the novel programming and testing integrated device provided by the invention.
FIG. 8 is a circuit diagram of a conversion control module of the novel programming and testing integrated device provided by the invention.
The device comprises a 1-conversion control module, a 2-level conversion module, a 3-power supply module, a 4-universal interface, 5-two jumper caps, a 6-signal transmission direction control module, a 7-seven-core interface and an 8-fourteen-core interface.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 8, the present invention provides a novel integrated programming and testing device, which is characterized in that,
the novel programming and testing integrated device comprises a conversion control module 1, a level conversion module 2, a power supply module 3, a universal interface 4, two jumper caps 5, a signal transmission direction control module 6, a seven-core interface 7 and a fourteen-core interface 8,
the seven-core interface 7 is in signal communication with the fourteen-core interface 8, the seven-core interface 7 is used for installing a seven-core intelligent identity key, the fourteen-core interface 8 is used for installing a fourteen-core intelligent identity key, the signal transmission of the seven-core interface 7 and the seven-core intelligent identity key and the signal transmission of the fourteen-core interface 8 and the fourteen-core intelligent identity key both adopt TTL levels,
different pins of the conversion control module 1 are matched with the two jumper caps to realize the function adjustment of the seven-core interface 7 and the fourteen-core interface 8,
the power supply module 3 is used for controlling the on-off of an external power supply and converting the voltage of the external power supply and is used by the level conversion module 2, the seven-core intelligent identity key and the fourteen-core intelligent identity key single board,
the signal transmission direction control module 6 is used for solving the switching problem between one channel and two channels between the single-channel bidirectional signal and the signal passing through the level conversion module 2, the TTL level signal outside the seven-core intelligent identity key and the fourteen-core intelligent identity key,
the universal interface 4 is configured to be connected with a computer provided with upper computer software through a USB (universal serial bus) interface line, and input and output signals to and from the integrated device by using an RS232 level,
the level conversion module 2 is configured to implement bidirectional conversion between the RS232 level and the TTL level.
Further, the fourteen-core interface 8 includes a fourteen-core socket X4, a single board socket X1, a single board socket X2, and a single board socket X3, the single board socket X1, the single board socket X2, and the single board socket X3 are used to install the control board of the fourteen-core smart identity key on the integrated device, so as to implement programming and testing of the fourteen-core smart identity key control board at the single board level, so as to screen out products with hardware problems, and the fourteen-core socket X4 is used to install the fourteen-core smart identity key on the integrated device.
Furthermore, the fourteen-core socket X4 comprises an X4-C pin, an X4-B pin and an X4-H pin, wherein the X4-C pin is used for receiving signals transmitted by the integrated device and outputting the signals to the integrated device through the X4-B pin, and the X4-H pin is used for transmitting the signals in two directions during the whole machine level programming.
Further, the single board socket X1 includes X1-3 pins, and during single board level testing, the X1-3 pins transmit signals in two directions.
Further, the single board socket X2 includes an X2-1 pin and an X2-2 pin, and when programming at a single board level, the single board receives a signal transmitted by the integrated device through the X2-1 pin and outputs the signal to the integrated device through the X2-2 pin.
Further, the seven-core interface 7 includes a seven-core socket XS1, a single board socket XS2, and a single board socket XS3, where the single board socket XS2 and the single board socket XS3 are used to install a control board of the seven-core smart identity key on the integrated device, so as to implement the programming and testing of the seven-core smart identity key control board at the single board level, and the seven-core socket XS1 is used to install the seven-core smart identity key on the integrated device, so as to implement the programming and testing of the seven-core smart identity key at the complete machine level.
Further, the seven-core socket XS1 comprises an XS1-2 pin, an XS1-3 pin and an XS1-7 pin,
the single board socket XS2 comprises an XS2-1 pin, an XS2-2 pin and an XS2-3 pin;
when a program is programmed for the seven-core intelligent identity key, if the program is programmed for the whole machine level, a signal transmitted by the integrated device is received through the XS1-2 pin, the signal is output to the integrated device through the XS1-3 pin, if the program is programmed for the single board level, the signal transmitted by the integrated device is received through the XS2-2 pin by the single board, the signal is output to the integrated device through the XS2-3 pin, and a TTL signal of the seven-core intelligent identity key is transmitted through the XS1-7 pin;
when the TTL level function of the seven-core intelligent identity key is tested, if the TTL level function is a complete machine level test, signals are transmitted in a two-way mode through the XS1-7 pin; in the case of single board level testing, signals are transmitted bi-directionally through the XS2-1 pin.
Further, general interface 4 module includes general DB9 socket X8, general DB9 socket X8 includes X8-2 foot and X8-3 foot, general DB9 socket X8 is connected with the USB mouth of computer through USB commentaries on classics serial port line, can establish the signal transmission passageway between host computer software and the integrated device, and the signal that host computer software sent passes through X8-3 foot input integrated device, integrated device passes through X8-2 foot is to host computer software transfer signal.
Further, the level shift module 2 includes a chip D2, the chip D2 includes a pin D2-2, a pin D2-7, a pin D2-8, a pin D2-9, a pin D2-10, a pin D2-11, a pin D2-12, a pin D2-13, and a pin D2-14, when a TTL level signal is transmitted to the pin D2-11, the TTL level signal is internally converted by the pin D2, and the pin D2-14 outputs a corresponding RS232 level signal;
when the RS232 level signal is transmitted to the D2-13 pin, the corresponding TTL level signal is output by the D2-12 pin through the internal conversion of the chip D2;
when TTL level signals are transmitted to the pins D2-10, corresponding RS232 level signals are output by the pins D2-7 through internal conversion of the chip D2;
when the RS232 level signal is transmitted to the D2-8 pin, the corresponding TTL level signal is output by the D2-9 pin through the internal conversion of the chip D2.
Further, the signal transmission direction control module 6 includes a chip D4, the chip D4 is used to solve the problem of switching signals between one channel and two channels, the chip D4 includes a D4-1 pin, a D4-3 pin, a D4-4 pin and a D4-6 pin, the D4-4 pin is connected to the XS1-7 pin and the X4-H pin, the D4-3 pin and the D4-6 pin are connected to a signal which needs to be sent to the intelligent identity key after being converted by the level conversion module 2, that is, the D2-12 pin, and the D4-1 pin is connected to a signal to be converted, that is, the D2-11 pin, which needs to be sent to the upper computer software.
In the present embodiment, when the level of the D4-4 pin changes, the D4 chip may output its signal as it is to the D4-1 pin; when the level of the D4-3 pin changes, the D4 chip can output the signal to the D4-4 pin as it is, so that conversion between a single-channel bidirectional signal and a double-channel unidirectional signal is realized
Further, the conversion control module 1 is matched with the two jumper caps, and the conversion control module 1 comprises an XS13-1 pin, an XS13-2 pin, an XS13-3 pin, an XS13-4 pin, an XS13-5 pin, an XS13-6 pin, an XS13-7 pin, an XS13-8 pin, an XS13-9 pin, an XS13-10 pin, an XS13-11 pin and an XS13-12 pin;
when the XS13-1 pin and the XS13-2 pin are communicated and the XS13-3 pin and the XS13-4 pin are communicated, the writing function of the seven-core intelligent identity key is realized;
the device is used for realizing the programming function of the fourteen-core intelligent identity key when the XS13-5 pin and the XS13-6 pin are communicated and the XS13-7 pin and the XS13-8 pin are communicated;
the test device is used for realizing the test functions of two intelligent identity keys by communicating an XS13-9 pin with an XS13-10 pin and communicating an XS13-11 pin with an XS13-12 pin.
Further, the power module 3 includes a 5V power supply, a socket X7, a switch S1, and a chip N1, wherein the 5V power supply is input through the socket X7, the switch S1 controls on/off of the 5V power supply, and the chip N1 is configured to convert the 5V power supply into a 3.3V power supply.
The use steps and the principle are as follows:
connecting the software of the upper computer and the integrated device:
connecting the computer and the integrated device by using a USB (universal serial bus) switching port line, starting upper computer software of the computer, inputting a signal sent by the upper computer software into the integrated device through the X8-3 pin if the upper computer software is operated, and transmitting the signal to the upper computer software by the integrated device through the X8-2 pin;
connect intelligent identity key and integrated device, set up integrated device:
1) when a program needs to be written for the seven-core intelligent identity key, the operation is as follows:
if the programming is the whole machine level programming, inserting the seven-core intelligent identity key into the seven-core interface 7 of the integrated device;
if the programming is single-board level programming, inserting a single board into the single-board socket XS2 and the single-board socket XS3 of the integrated device;
the two jumper caps are respectively in short circuit with the XS13-1 pin and the XS13-2 pin on the integrated device, the XS13-3 pin and the XS13-4 pin, and at the moment, signals output by upper computer software are transmitted to the XS1-2 pin and the XS2-2 pin through the X8-3 pin and the XS13-1 pin and the XS13-2 pin and respectively reach receiving pins of a whole machine and a single board; signals sent by the whole machine and the single board are transmitted to the X8-2 pin through the XS13-4 pin and the XS13-3 pin and reach a receiving pin of an upper computer respectively through the XS1-3 pin and the XS2-3 pin.
2) When a fourteen-core intelligent identity key programming program needs to be written, the operation is as follows:
if the programming is complete machine level programming, inserting the fourteen-core intelligent identity key into a fourteen-core interface 8 of the integrated device;
if the programming is single-board level programming, inserting a single board into the single-board socket X1, the single-board socket X2 and the single-board socket X3 of the integrated device;
two jumper caps 5 short the XS13-5 pin and the XS13-6 pin, the XS13-7 pin and the XS13-8 pin, respectively, on the integrated device, at which time: signals sent by the upper computer are transmitted to the D2-8 pin through the X8-3 pin and the XS13-5 pin and the XS13-6 pin, converted into TTL level signals through the chip D2, output from the D2-9 pin, transmitted to the X4-C pin and the X2-1 pin and respectively reach receiving pins of a complete machine and a single board; signals sent by the whole machine and the single board are respectively transmitted to the D2-10 pin through the X4-B pin and the X2-2 pin, converted into RS232 level signals through the chip D2, output from the D2-7 pin, transmitted to the X8-2 pin through the XS13-8 pin and the XS13-7 pin and transmitted to a receiving pin of an upper computer.
When two kinds of intelligent identity keys need to be tested, the operation is as follows:
if the test is a complete machine level test, respectively inserting a seven-core intelligent identity key and a fourteen-core intelligent identity key into the seven-core interface 7 or the fourteen-core interface 8 of the integrated device;
if the test is a single-board level test, respectively inserting single boards of the seven-core intelligent identity key and the fourteen-core intelligent identity key into a combination of the single-board socket XS2 and the single-board socket XS3 or a combination of the single-board socket X1, the single-board socket X2 and the single-board socket X3 of the integrated device;
the two jumper caps respectively short the XS13-9 pin and the XS13-10 pin, the XS13-11 pin and the XS13-12 pin on the integrated device, and at the moment: the signal sent by the upper computer is transmitted to the D2-13 pin through an X8-3 pin through the XS13-9 pin and the XS13-10 pin, is converted into a TTL level signal through a chip D2, is output from the D2-12 pin, is transmitted to the D4-3 pin, is converted and transmitted to the D4-4 pin through a chip D4, and is transmitted to the XS1-7 pin, the XS2-1 pin, the X4-H pin and the X1-3 pin to reach a receiving end of the intelligent identity key; a signal sent by the intelligent identity key is transmitted to the D4-4 pin through the XS1-7 pin, the XS2-1 pin, the X4-H pin or the X1-3 pin, is converted by the chip D4 and output to the D2-11 pin through the D4-1 pin, is converted by the chip D2 into an RS232 level signal, is output from the D2-14 pin, and is transmitted to the X8-2 pin through the XS13-12 pin and the XS13-11 pin to reach a receiving pin of an upper computer;
the two-terminal signal path establishment is completed.
And powering up the integrated device, operating different buttons of the software of the upper computer, and completing the whole machine or single board level programming or testing of the intelligent identity key.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A novel programming and testing integrated device is characterized in that,
the novel programming and testing integrated device comprises a conversion control module, a level conversion module, a power supply module, a universal interface, two jumper caps, a signal transmission direction control module, a seven-core interface and a fourteen-core interface,
the seven-core interface is in signal communication with the fourteen-core interface, the seven-core interface is used for installing a seven-core intelligent identity key, the fourteen-core interface is used for installing a fourteen-core intelligent identity key, the signal transmission of the seven-core interface and the seven-core intelligent identity key and the signal transmission of the fourteen-core interface and the fourteen-core intelligent identity key both adopt TTL levels,
different pins of the conversion control module are matched with the two jumper caps to realize the function adjustment of the seven-core interface and the fourteen-core interface,
the power supply module is used for controlling the on-off of an external power supply and converting the voltage of the external power supply and is used by the level conversion module, the seven-core intelligent identity key and the fourteen-core intelligent identity key single board,
the signal transmission direction control module is used for solving the switching problem between one channel and two channels between a single-channel bidirectional signal and a signal passing through the level conversion module and a double-channel unidirectional signal of TTL level signals outside the seven-core intelligent identity key and the fourteen-core intelligent identity key,
the general interface is configured to be connected with a computer provided with upper computer software through a USB interface line and input and output signals to and from the integrated device by using an RS232 level,
and the level conversion module is used for realizing the bidirectional conversion between the RS232 level and the TTL level.
2. The new type of integrated programming and testing device as claimed in claim 1,
the fourteen-core interface comprises a fourteen-core socket X4, a single-board socket X1, a single-board socket X2 and a single-board socket X3, the single-board socket X1, the single-board socket X2 and the single-board socket X3 are used for installing a control panel of the fourteen-core intelligent identity key on the integrated device, so that writing and testing of the fourteen-core intelligent identity key control panel single-board level are achieved, products with hardware problems are screened out, and the fourteen-core socket X4 is used for installing the fourteen-core intelligent identity key on the integrated device.
3. The new type of integrated programming and testing device as set forth in claim 2,
the fourteen-core socket X4 comprises an X4-C pin, an X4-B pin and an X4-H pin, wherein when the whole machine is used for programming, the X4-C pin is used for receiving signals transmitted by the integrated device and outputting the signals to the integrated device through the X4-B pin, and the X4-H pin is used for transmitting the signals in two directions.
4. The new type of integrated programming and testing device as set forth in claim 3,
the single board socket X1 comprises an X1-3 pin, and during single board level test, the X1-3 pin transmits signals in two directions.
5. The new type of integrated programming and testing device as set forth in claim 4,
the single board socket X2 comprises an X2-1 pin and an X2-2 pin, and when the single board is used for programming, the single board receives signals transmitted by the integrated device through the X2-1 pin and outputs the signals to the integrated device through the X2-2 pin.
6. The new type of integrated programming and testing device as set forth in claim 5,
the seven-core interface comprises a seven-core socket XS1, a single board socket XS2 and a single board socket XS3, the single board socket XS2 and the single board socket XS3 are used for installing a control board of the seven-core intelligent identity key on an integrated device so as to realize single-board level programming and testing of the seven-core intelligent identity key control board, and the seven-core socket XS1 is used for installing the seven-core intelligent identity key on the integrated device so as to realize complete-level programming and testing of the seven-core intelligent identity key.
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| CN113656336A (en) * | 2021-08-11 | 2021-11-16 | 杭州聚触科技有限公司 | Communication conversion circuit |
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| CN114328068B (en) | 2024-04-19 |
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