CN109032985B - Signal transmission device, terminal and signal transmission method - Google Patents
Signal transmission device, terminal and signal transmission method Download PDFInfo
- Publication number
- CN109032985B CN109032985B CN201810679421.XA CN201810679421A CN109032985B CN 109032985 B CN109032985 B CN 109032985B CN 201810679421 A CN201810679421 A CN 201810679421A CN 109032985 B CN109032985 B CN 109032985B
- Authority
- CN
- China
- Prior art keywords
- signal
- usb
- usb signal
- module
- voltage value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4009—Coupling between buses with data restructuring
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Information Transfer Systems (AREA)
Abstract
The embodiment of the invention discloses a signal transmission device, a terminal and a signal transmission method, which are applied to the technical field of communication and can solve the problem that the terminal in the prior art cannot identify signals transmitted by some USB equipment. The method comprises the following steps: receiving a first serial universal bus (USB) signal; converting the first USB signal into a second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range. The method is applied to the scene of transmitting the USB signal.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a signal transmission device, a terminal and a signal transmission method.
Background
With the popularization of terminal technology, the application of terminals is more and more extensive. The terminal can establish a USB connection with other devices (hereinafter referred to as USB devices) having a Universal Serial Bus (USB) function, so as to implement signal transmission with other USB devices.
At present, in order to make the terminal compatible with more USB devices, a common mode filter may be disposed inside the terminal to eliminate an interference signal in a USB signal received by the terminal, so that the terminal may identify more USB signals sent by the USB devices by improving the signal quality of the USB signal received by the terminal.
Although the signal quality of the USB signals received by the terminal is improved in the above method, because some USB devices do not consider the compatibility problem with other devices in the design process, the terminal may not recognize the USB signals sent by the USB devices due to the defects in the hardware design of the USB devices. For example, if the USB devices are not impedance-controlled during the design process, the inductive impedance in the signal path between the terminal and the USB devices may be too large, so that the USB signal passing through the signal path may generate ringing, and the voltage value of the USB signal may exceed the preset voltage range, so that the terminal cannot recognize the USB signal sent by the USB devices, that is, the terminal cannot be compatible with the USB devices.
Disclosure of Invention
The embodiment of the invention provides a signal transmission device, a terminal and a signal transmission method, which are used for solving the problem that the terminal in the prior art cannot identify signals transmitted by some USB equipment.
In order to solve the above technical problem, the embodiment of the present invention is implemented as follows:
in a first aspect, a signal transmission apparatus is provided, which includes at least a voltage matching module; the voltage matching module is used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range.
In a second aspect, a terminal is provided, which includes: the signal transmission device according to the first aspect.
In a third aspect, a signal transmission method is provided, which includes: receiving a first serial universal bus (USB) signal; converting the first USB signal into a second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range.
In the embodiment of the invention, the signal transmission device at least comprises a voltage matching module; the voltage matching module is used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range. Through the scheme, under the condition that the first USB signal received by the voltage matching module generates ringing, the voltage value of the first USB signal is probably not in the preset voltage range, and at the moment, the voltage matching module can convert the first USB signal into the second USB signal of which the voltage value is in the preset voltage range, so that the signal transmission device can still identify the USB signal under the condition that the received USB signal generates ringing.
Drawings
Fig. 1 is a first schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 2 is a second schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 3 is a third schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 4 is a fourth schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 5 is a fifth schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 6 is a sixth schematic diagram of a signal transmission apparatus according to an embodiment of the present invention;
fig. 7 is a first schematic diagram illustrating a signal transmission method according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a signal transmission method according to an embodiment of the present invention;
fig. 9 is a third schematic diagram of a signal transmission method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and "fourth," etc. in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first USB signal, the second USB signal, the third USB signal, the fourth USB signal, and so on are used to distinguish different USB signals, and are not used to describe a specific order of USB signals.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The embodiment of the invention provides a signal transmission device, a terminal and a signal transmission method, wherein the signal transmission device at least comprises a voltage matching module; the voltage matching module is used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range. Through the scheme, under the condition that the first USB signal received by the voltage matching module generates ringing, the voltage value of the first USB signal is probably not in the preset voltage range, and at the moment, the voltage matching module can convert the first USB signal into the second USB signal of which the voltage value is in the preset voltage range, so that the signal transmission device can still identify the USB signal under the condition that the received USB signal generates ringing.
The following describes exemplary signal transmission apparatuses, terminals, and signal transmission methods according to embodiments of the present invention with reference to the drawings provided by embodiments of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a signal transmission apparatus 01, where the signal transmission apparatus 01 at least includes a voltage matching module 02;
the voltage matching module 02 is used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range.
Optionally, the voltage matching module 02 is further configured to send the first USB signal when the voltage value of the first USB signal is within a preset voltage range, that is, the first USB signal does not pass through the voltage matching module 02.
For example, if the voltage value of the first USB signal is too large and is greater than the maximum voltage of the preset voltage range, the first voltage matching module may reduce the voltage value of the first USB signal and convert the voltage value of the first USB signal into the second USB signal having a voltage value within the preset voltage range; if the voltage value of the first USB signal is too small and smaller than the minimum voltage of the preset voltage range, the voltage value of the first USB signal may be increased and converted into a second USB signal having a voltage value within the preset voltage range.
Optionally, the USB signal in the embodiment of the present invention may be a digital signal, and the digital signal may be a differential signal.
The first USB signal received by the voltage matching module may be sent to the signal transmission apparatus 01 by other USB devices (i.e. USB devices other than the signal transmission apparatus 01) through the USB interface.
Optionally, in the embodiment of the present invention, the preset voltage range may be determined according to a standard voltage range of a USB signal specified in a communication standard, or may be set according to a voltage range in which the signal transmission device 01 can actually recognize a voltage of the USB signal. The method can be determined according to actual use requirements, and the embodiment of the invention is not limited.
In practical use, when the USB signal received by the signal transmission device rings, the overshoot voltage may be larger than the preset voltage range, and at this time, the voltage matching module may convert the received USB signal, so that the voltage of the converted USB signal is within the preset voltage range, and the signal transmission device may identify the USB signal.
The embodiment of the invention provides a signal transmission device, which at least comprises a voltage matching module; the voltage matching module is used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range. Through the scheme, under the condition that the first USB signal received by the voltage matching module generates ringing, the voltage value of the first USB signal is probably not in the preset voltage range, and at the moment, the voltage matching module can convert the first USB signal into the second USB signal of which the voltage value is in the preset voltage range, so that the signal transmission device can still identify the USB signal under the condition that the received USB signal generates ringing.
Optionally, in conjunction with fig. 1, as shown in fig. 2, the voltage matching module 02 includes a detection module 021 and a conversion module 022 connected to the detection module 021;
the detecting module 021 is configured to receive the first USB signal, detect a voltage value of the first USB signal, and send the first USB signal to the converting module 022 if the voltage value of the first USB signal is not within a preset voltage range (hereinafter, referred to as a first case);
the converting module 022 is configured to receive the first USB signal, convert the first USB signal into a second USB signal, and send the second USB signal.
Optionally, the detecting module 021 is further configured to send the first USB signal when the voltage value of the first USB signal is within a preset voltage range (hereinafter, referred to as a second case). At this time, the first USB signal does not pass through the converting module 022.
Optionally, the detecting module receives the first USB signal, detects a voltage value of the first USB signal, and determines whether the voltage value of the first USB signal is within a preset voltage range, which may be implemented by a trigger or a high-speed comparator.
The detecting module may send the first USB signal to the converting module 022 in the first case, that is, the first USB signal is transmitted through the first signal path; in the second case, the first USB signal is sent without passing through the conversion module 022, i.e., the first USB signal is transmitted through the second signal path. The function of the detection module for determining from which signal path (the first signal path or the second signal path) the first USB signal is transmitted according to different situations can be implemented by a logic circuit.
The voltage matching module 01 in the embodiment of the present invention may be the first independent module as shown in fig. 1, or may be a combination including the detecting module 021 and the converting module 022 as shown in fig. 2.
Optionally, with reference to fig. 2, as shown in fig. 3, the signal transmission apparatus 01 further includes: the device comprises a processing module 03, a USB interface 04 and a common-mode filtering module 05; the USB interface 04 and the voltage matching module 02 are connected with the common-mode filtering module 05; the processing module 03 is connected with the voltage matching module 02;
the common mode filtering module 05 is configured to receive the third USB signal through the USB interface, eliminate an interference signal in the third USB signal, obtain a first USB signal, and send the first USB signal to the voltage matching module 02;
and the voltage matching module 02 is specifically configured to send the second USB signal to the processing module 03.
After receiving the third USB signal, the signal transmission apparatus in the embodiment of the present invention may first eliminate an interference signal in the third USB signal through the common mode filtering module to obtain the first USB signal, and then transmit the first USB signal to the voltage matching module, so that the voltage matching module may convert the first USB signal into the second USB signal and send the second USB signal to the processor when the voltage value of the first USB signal is not within the preset voltage range, or directly send the first USB signal to the processor when the voltage value of the first USB signal is within the preset voltage range (i.e., the first USB signal does not pass through the voltage matching module). Thus, the signal transmission device provided by the embodiment of the invention can improve the signal quality of the USB signal received by the terminal through the common mode filtering module, and can ensure that the terminal can receive the USB signal within the preset voltage range through the voltage matching module, thereby further ensuring that the signal transmission device can identify the received USB signal.
Optionally, with reference to fig. 2, as shown in fig. 4, the signal transmission apparatus 01 further includes: the device comprises a processing module 03, a USB interface 04 and a common-mode filtering module 05; the USB interface 04 and the common mode filtering module 05 are connected with the voltage matching module 02; the processing module 03 is connected with the common-mode filtering module 05;
the voltage matching module 02 is specifically configured to send the second USB signal to the common mode filtering module 05;
the common mode filtering module 05 is configured to receive the second USB signal, eliminate an interference signal in the second USB signal, obtain a fourth USB signal, and send the fourth USB signal to the processing module 03.
Alternatively, the processing module 03 in fig. 3 and 4 may be a CPU or a processor, and the processing module 03 may be connected to various parts of the entire signal transmission apparatus by using various interfaces and lines, and is configured to process USB signals and control the signal transmission apparatus to transmit USB signals. Also, the processing module 03 may include one or more processing units; optionally, the processing module 03 may integrate an application processor and a modem processor, and the processing module 03 may be configured to process a USB signal in this embodiment of the present invention.
Optionally, in the embodiment of the present invention, the common mode filtering module 05 may be a common mode filter.
In the embodiment of the present invention, after receiving the third USB signal, the signal transmission device may first convert the first USB signal into the second USB signal through the voltage matching module under the condition that the voltage value of the first USB signal is no longer within the preset voltage range, and then transmit the second USB signal to the common mode filtering module, so that the common mode filtering module may eliminate an interference signal in the second USB signal to obtain the fourth USB signal, and send the fourth USB signal to the processing module for processing. Thus, the signal transmission device provided by the embodiment of the invention can improve the signal quality of the USB signal received by the terminal through the common mode filtering module, and can ensure that the terminal can receive the USB signal within the preset voltage range through the voltage matching module, thereby further ensuring that the signal transmission device can identify the received USB signal.
Optionally, as shown in fig. 5 and fig. 5 as a signal transmission apparatus 01 in combination with fig. 3, or as shown in fig. 6 and fig. 6 as a signal transmission apparatus 01 in combination with fig. 4, the signal transmission apparatus 01 further includes: the power supply module 06 is connected with the processing module 03 and the USB interface 04;
the power module 06 is configured to supply power to the first device 11 when the signal transmission apparatus 01 is a master device and the first device 11 is a slave device; or in the case that the first device 11 is a master device and the signal transmission apparatus 01 is a slave device, the first device 11 supplies power to the signal transmission apparatus 01; the first device 11 is a device connected to the USB interface 04.
The first device can be connected with the signal transmission device through the USB interface so as to realize USB signal transmission between the first device and the signal transmission device.
Optionally, the first device may also include a USB interface.
For example, if the first device is not impedance-controlled during the design process, and an inductive impedance in a signal path (i.e., a signal path of the USB signal) between the signal transmission apparatus and the first device is relatively large, when the first device sends the first USB signal to the signal reception apparatus through the USB interface, the first USB signal may ring, and a voltage value of the first USB signal may exceed a preset voltage range. In the embodiment of the present invention, when the voltage value of the first USB signal exceeds the preset voltage range, the first USB signal may be converted into the second USB signal having the voltage value within the preset voltage range, so that the signal transmission apparatus may be the USB signal sent by the first device, that is, the signal transmission apparatus may be compatible with the first device.
An embodiment of the present invention provides a terminal, which may include any one of the signal transmission apparatuses in fig. 1 to 6. For the description of the signal transmission device, reference may be made to the related description in the above embodiments, and details are not repeated here.
The embodiment of the invention provides a terminal, which can comprise a signal transmission device, wherein the signal transmission device at least comprises a voltage matching module used for receiving a first USB signal; converting the first USB signal into a second USB signal and sending the second USB signal under the condition that the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within a preset voltage range. Through the scheme, under the condition that the first USB signal received by the voltage matching module generates ringing, the voltage value of the first USB signal is probably not in the preset voltage range, and at the moment, the voltage matching module can convert the first USB signal into the second USB signal of which the voltage value is in the preset voltage range, so that the signal transmission device can still identify the USB signal under the condition that the received USB signal generates ringing.
The terminal in the embodiment of the invention can be a mobile terminal or a non-mobile terminal. The mobile terminal may be a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), etc.; the non-mobile terminal may be a Personal Computer (PC), a Television (TV), a teller machine, a self-service machine, or the like; the embodiments of the present invention are not particularly limited.
An embodiment of the present invention further provides a signal transmission method, where an execution subject of the signal transmission method may be the terminal (including a mobile terminal and a non-mobile terminal) or the signal transmission device, or may also be a functional module and/or a functional entity capable of implementing the signal transmission method in the terminal or the signal transmission device, and may be determined specifically according to an actual use requirement, and the embodiment of the present invention is not limited. The following takes a signal transmission device as an example to exemplarily describe a signal transmission method provided by the embodiment of the present invention.
As shown in fig. 7, the signal transmission method provided by the embodiment of the present invention includes the following steps S11 and S12.
S11, the signal transmission device receives the first USB signal.
S12, converting the first USB signal into a second USB signal by the signal transmission device under the condition that the voltage value of the first USB signal is not in the preset voltage range; the voltage value of the second USB signal is within a preset voltage range.
The embodiment of the invention provides a signal transmission method, which can receive a first USB signal; and converting the first USB signal into a second USB signal if the voltage value of the first USB signal is not within the preset voltage range. Through the scheme, under the condition that the received first USB signal generates ringing, the voltage value of the first USB signal is possibly not in the preset voltage range, and at the moment, the first USB signal can be converted into the second USB signal with the voltage value in the preset voltage range, so that the USB signal can still be identified under the condition that the received USB signal generates ringing.
Optionally, the signal transmission device may directly send the first USB signal when the voltage value of the first USB signal is within the preset voltage range.
Optionally, with reference to fig. 7, as shown in fig. 8, after the step S11 and before the step S12, the signal transmission method provided in the embodiment of the present invention may further include the step S13.
S13, the signal transmitting device detects a voltage value of the first USB signal.
Optionally, with reference to fig. 8, as shown in fig. 9, after the step S12, the signal transmission method provided in the embodiment of the present invention may further include the step S14.
And S14, the signal transmission device processes the second USB signal.
Optionally, the signal transmission device processing the second USB signal may identify the second USB signal for the signal transmission device.
The signal transmission method provided by the embodiment of the invention can convert the USB signal within the voltage range which is not preset any more into the USB signal within the voltage range before the signal transmission device processes the USB signal, thereby ensuring that the signal transmission device can identify the second USB signal.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. A signal transmission device is characterized by at least comprising a voltage matching module, wherein the voltage matching module comprises a detection module and a conversion module connected with the detection module;
the voltage matching module is used for receiving a first serial universal bus (USB) signal; and converting the first USB signal into a second USB signal and transmitting the second USB signal when the voltage value of the first USB signal is not within a preset voltage range; the voltage value of the second USB signal is within the preset voltage range;
the voltage matching module is further configured to send the first USB signal when the voltage value of the first USB signal is within the preset voltage range;
the detection module is used for receiving the first USB signal, detecting the voltage value of the first USB signal, and sending the first USB signal to the conversion module through a first signal path under the condition that the voltage value of the first USB signal is not within the preset voltage range;
the conversion module is used for receiving the first USB signal, converting the first USB signal into the second USB signal and sending the second USB signal;
the detection module is further configured to send the first USB signal through a second signal path when the voltage value of the first USB signal is within a preset voltage range;
the signal transmission device further includes: the device comprises a processing module, a USB interface and a common-mode filtering module; the USB interface and the voltage matching module are connected with the common-mode filtering module; the processing module is connected with the voltage matching module;
the common mode filtering module is used for receiving a third USB signal through the USB interface, eliminating an interference signal in the third USB signal to obtain the first USB signal, and sending the first USB signal to the voltage matching module;
the voltage matching module is specifically configured to send the second USB signal to the processing module;
the detection module determines a signal path for sending the first USB signal through a logic circuit.
2. A terminal, characterized in that it comprises a signal transmission device according to claim 1.
3. A signal transmission method applied to the signal transmission apparatus according to claim 1, the method comprising:
receiving a first serial universal bus (USB) signal;
detecting a voltage value of the first USB signal;
under the condition that the voltage value of the first USB signal is not within a preset voltage range, the first USB signal is sent through a first signal path and converted into a second USB signal;
the voltage value of the second USB signal is within the preset voltage range;
under the condition that the voltage value of the first USB signal is within the preset voltage range, the first USB signal is sent through a second signal path;
the first USB signal is a digital signal, the digital signal is a differential signal, and a signal path for transmitting the first USB signal is determined through a logic circuit.
4. The method of claim 3, wherein after converting the first USB signal to a second USB signal, the method further comprises:
and processing the second USB signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679421.XA CN109032985B (en) | 2018-06-27 | 2018-06-27 | Signal transmission device, terminal and signal transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810679421.XA CN109032985B (en) | 2018-06-27 | 2018-06-27 | Signal transmission device, terminal and signal transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109032985A CN109032985A (en) | 2018-12-18 |
| CN109032985B true CN109032985B (en) | 2021-06-29 |
Family
ID=64611200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810679421.XA Active CN109032985B (en) | 2018-06-27 | 2018-06-27 | Signal transmission device, terminal and signal transmission method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109032985B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549459A (en) * | 2016-12-29 | 2017-03-29 | 硅谷数模半导体（北京）有限公司 | The determination method of charging voltage and mobile terminal |
| CN108073537A (en) * | 2016-11-11 | 2018-05-25 | 中兴通讯股份有限公司 | Usb circuit, the implementation method of USB interface and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9887620B2 (en) * | 2015-06-05 | 2018-02-06 | Dong-Sheng Li | Power converter |
-
2018
- 2018-06-27 CN CN201810679421.XA patent/CN109032985B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108073537A (en) * | 2016-11-11 | 2018-05-25 | 中兴通讯股份有限公司 | Usb circuit, the implementation method of USB interface and device |
| CN106549459A (en) * | 2016-12-29 | 2017-03-29 | 硅谷数模半导体（北京）有限公司 | The determination method of charging voltage and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109032985A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8838032B2 (en) | Communication terminal and communication control method | |
| CN111817385B (en) | Charger, data line and charging equipment | |
| CN109032985B (en) | Signal transmission device, terminal and signal transmission method | |
| CN104270826A (en) | Information processing method and electronic equipment | |
| CN105407166A (en) | Communication implementation method and system for wearable equipment | |
| KR102532885B1 (en) | Demodulation circuit and wireless power transmission device having the same | |
| CN104714121A (en) | Detection system and real-time notification method thereof | |
| CN102340423A (en) | Network monitoring device | |
| CN108289165B (en) | Method and device for realizing camera control based on mobile phone and terminal equipment | |
| CN108737673B (en) | Network telephone equipment, external connection card and communication method of network telephone equipment | |
| CN105224214A (en) | A kind of method for controlling dialing and intelligent watch | |
| CN105554168B (en) | A kind of methods, devices and systems obtaining the matched phone number of MAC Address | |
| CN105467230A (en) | Electronic product testing system, electronic product testing method and sensing device thereof | |
| US4683471A (en) | Data bus pilot tone | |
| WO2016161756A1 (en) | Call forwarding method, device and system | |
| CN110381483B (en) | Data communication device based on image processing | |
| CN103347575B (en) | Method, related device and system for processing crosstalk cancelling on port line of access device | |
| CN112882969A (en) | Data connection interface and data transmission device, system and method | |
| CN214591409U (en) | Intelligent network combined communication device | |
| US20160036537A1 (en) | Electronic device testing system | |
| WO2019197985A4 (en) | Sending information signals on a differential signal pair | |
| CN106470414B (en) | Method and device for accessing SIM card | |
| CN104298631A (en) | Method for terminal to be in communication with computer through USB | |
| CN112910487B (en) | Antenna detection device and electronic equipment | |
| CN111242598B (en) | Data communication method based on image processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |