CN119521067B - A power supply and differential signal transmission device and headphones - Google Patents
A power supply and differential signal transmission device and headphonesInfo
- Publication number
- CN119521067B CN119521067B CN202411611908.6A CN202411611908A CN119521067B CN 119521067 B CN119521067 B CN 119521067B CN 202411611908 A CN202411611908 A CN 202411611908A CN 119521067 B CN119521067 B CN 119521067B
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- CN
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- Prior art keywords
- transformer
- signal
- management circuit
- power management
- differential signal
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
Abstract
The invention discloses a power supply and differential signal same network transmission device and an earphone, wherein the device comprises a first signal transmission module and a second signal transmission module, the first signal transmission module comprises a first transmitting transformer and a first coupling power management circuit, the first transmitting transformer is connected with a differential signal, the first coupling power management circuit transmits a power supply signal to the first transmitting transformer so as to output the coupled differential signal and the power supply signal, the second signal transmission module comprises a second receiving transformer and a second separation power management circuit, the input end of the second receiving transformer is connected with the coupled differential signal and the power supply signal, the second separation power management circuit separates the power supply signal from the second receiving transformer, and the second separation power management circuit outputs at least one path of voltage signal according to the power supply signal.
Description
Technical Field
The invention relates to the technical field of intelligent headphones, in particular to a power supply and differential signal same-network transmission device.
Background
With the increasing development of electronic products, there are various products on the market, and the functions are more and more diversified and refined, so that some products have insufficient communication lines or interfaces, and cannot accommodate too many signal lines or power line interfaces, such as headphones, so that some products have to change the original design and reduce part of functions.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the power supply and differential signal same network transmission device and the earphone, which are used for coupling the power supply line number and the differential signal together and then transmitting, so that interface terminals occupied by power supply signal input are saved, the earphone utilizes limited interface numbers to transmit more data, and more functions are realized.
In order to solve the technical problems, the technical scheme of the invention is as follows:
The power supply and differential signal same-network transmission device comprises a first signal transmission module and a second signal transmission module, wherein the first signal transmission module comprises a first transmitting transformer and a first coupling power supply management circuit, a middle tap of an input end of the first transmitting transformer is grounded, a middle tap of an output end of the first transmitting transformer is electrically connected with an output end of the first coupling power supply management circuit, an input end of the first transmitting transformer is connected with a differential signal, the first coupling power supply management circuit transmits a power supply signal to the first transmitting transformer to enable the first transmitting transformer to output a coupled differential signal and a power supply signal, the second signal transmission module comprises a second receiving transformer and a second separating power supply management circuit, an input end of the second receiving transformer is electrically connected with an output end of the first transmitting transformer to receive the coupled differential signal and the power supply signal, a middle tap of an input end of the second receiving transformer is electrically connected with an input end of the second separating power supply management circuit to separate the power supply signal, and the second receiving transformer is electrically connected with an output end of the second separating power supply management circuit to enable the second receiving the differential signal and the second separating power supply management circuit to output the differential signal according to at least the first path of the differential signal and the second separating power supply management circuit.
Preferably, the first signal transmission module further comprises a first differential signal converter and a first data processor which are electrically connected, the first differential signal converter is electrically connected with the input end of the first transmitting transformer, the second signal transmission module further comprises a second differential signal converter and a second data processor which are electrically connected, and the second differential signal converter is electrically connected with the output end of the second receiving transformer.
Preferably, the first signal transmission module further comprises a first receiving transformer and a first split power management circuit, wherein a middle tap of an input end of the first receiving transformer is electrically connected with an input end of the first split power management circuit to split power signals, a middle tap of an output end of the first receiving transformer is electrically connected with a reference end of the first split power management circuit to enable the first receiving transformer to output differential signals, the first split power management circuit outputs at least one path of voltage signals according to the power signals, the second signal transmission module further comprises a second transmitting transformer and a second coupling power management circuit, a middle tap of an input end of the second transmitting transformer is grounded, a middle tap of an output end of the second transmitting transformer is electrically connected with an output end of the second coupling power management circuit, and an input end of the second transmitting transformer is connected with the differential signals, and a transmission power signal of the second coupling power management circuit is connected to the second receiving transformer to enable the second receiving transformer to output the coupled differential signals and the power signals.
Preferably, the first signal transmission module further comprises a first handshake identification circuit, the first handshake identification circuit is electrically connected with the enabling end of the first separation power management circuit, the second signal transmission module further comprises a second handshake identification circuit, the second handshake identification circuit is electrically connected with the enabling end of the second separation power management circuit, handshake between the first handshake identification circuit and the second handshake identification circuit is successful, and an enabling signal is transmitted to the first separation power management circuit or the second separation power management circuit, so that the first separation power management circuit or the second separation power management circuit outputs at least one voltage signal according to a power signal.
Preferably, the first handshake identification circuit and the second handshake identification circuit are in wireless communication connection.
Preferably, the first transmitting transformer and the second receiving transformer have the same structure.
Preferably, the first receiving transformer and the second transmitting transformer have the same structure.
Preferably, the reference voltage values output by the reference terminals of the first split power management circuit and the second split power management circuit are set according to the differential signal and the minimum voltage fluctuation allowable value.
An earphone comprises the power supply and differential signal same-network transmission device.
The preferred mode is, including left earphone and right earphone, set up the battery in the left earphone, perhaps, set up the battery in the right earphone.
After the technical scheme is adopted, the invention has the beneficial effects that:
The power supply and differential signal same-network transmission device and the earphone comprise a first signal transmission module and a second signal transmission module, wherein the first signal transmission module comprises a first sending transformer and a first coupling power supply management circuit, the first sending transformer is used for being connected with differential signals, the first coupling power supply management circuit is used for transmitting power supply signals to the first sending transformer so that the first sending transformer outputs coupled differential signals and power supply signals, the second signal transmission module comprises a second receiving transformer and a second separation power supply management circuit, the input end of the second receiving transformer is connected with the coupled differential signals and the power supply signals, the second separation power supply management circuit separates the power supply signals from the second receiving transformer and ensures that the second receiving transformer outputs the differential signals transmitted by the first signal transmission module, and the second separation power supply management circuit outputs at least one voltage signal according to the power supply signals so as to meet different working voltage requirements.
Drawings
FIG. 1 is a schematic block diagram of a power supply and differential signal co-network transmission device in accordance with the present invention;
FIG. 2 is a functional block diagram of an embodiment of the present invention;
In the figure, 100-a first signal transmission module, 10-a first sending transformer, 11-a first receiving transformer, 12-a first differential signal converter, 13-a first data processor, 14-a first coupling power management circuit, 15-a first separation power management circuit, 16-a first handshake identification circuit, 200-a second signal transmission module, 20-a second receiving transformer, 21-a second sending transformer, 22-a second differential signal converter, 23-a second data processor, 24-a second separation power management circuit, 25-a second coupling power management circuit, and 26-a second handshake identification circuit.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1, according to an embodiment of the first aspect of the present invention, the power and differential signal co-network transmission device includes a first signal transmission module 100 and a second signal transmission module 200.
The first signal transmission module 100 includes a first transmitting transformer 10 and a first coupling power management circuit 14, where an intermediate tap at an input end of the first transmitting transformer 10 is grounded GND, an intermediate tap at an output end of the first transmitting transformer 10 is electrically connected to an output end of the first coupling power management circuit 14, an input end of the first transmitting transformer 10 is connected to a differential signal, and the first coupling power management circuit 14 transmits a power signal VCC to the first transmitting transformer 10, so that the first transmitting transformer 10 outputs the coupled differential signal and the power signal. The first signal transmission module 100 in the present invention further includes a first differential signal converter 12 and a first data processor 13, wherein an input end of the first differential signal converter 12 is electrically connected to an input end of the first transmitting transformer 10, and an output end of the first differential signal converter 12 is electrically connected to the first data processor 13.
The second signal transmission module 200 includes a second receiving transformer 20 and a second split power management circuit 24, wherein an input terminal of the second receiving transformer 20 is electrically connected to an output terminal of the first transmitting transformer 10 to receive the coupled differential signal and the power signal, a middle tap of an input terminal of the second receiving transformer 20 is electrically connected to an input terminal of the second split power management circuit 24 to split the power signal VCC, and a middle tap of an output terminal of the second receiving transformer 20 is electrically connected to a reference terminal Vref of the second split power management circuit 24 to enable the second receiving transformer 20 to output the differential signal. The second signal transmission module 200 further includes a second differential signal converter 22 and a second data processor 23, where an input end of the second differential signal converter 22 is electrically connected to an output end of the second receiving transformer 20, and an output end of the second differential signal converter 22 is electrically connected to the second data processor 23.
In the invention, the first differential signal converter 12 and the second differential signal converter 22 mainly convert the single-channel signal and the differential signal, reduce the interference of the high-speed signal in long-distance transmission, and protect the signal data from losing conversion in the transmission.
In the present invention, the second split power management circuit 24 outputs at least one voltage signal according to the power signal VCC, and the second split power management circuit 24 may include, but is not limited to, a voltage conversion circuit, which can convert the power signal VCC into different voltage signals, i.e. output at least one voltage signal, so as to improve different working voltages, such as 3.3V, 5V, etc., and indirectly realize multiple functions.
In a preferred embodiment, the first transmitting transformer 10 and the second receiving transformer 20 have the same structure, so that the influence on the differential signal in the transmission process is reduced, and the stability of differential signal transmission is ensured.
As shown in fig. 1, when the power supply and differential signal co-network transmission device of the present invention is operated, the power supply signal and the differential signal are integrated and separated by the first transmitting transformer 10 and the second receiving transformer 20, wherein the first signal transmission module 100 is used for transmitting the coupled power supply signal and differential signal, and the second signal transmission module 200 is used for separating the power supply signal and differential signal.
The first data processor 13 transmits the high-speed signal to the first differential signal converter to be converted into differential signals P and N, the differential signals are transmitted to the input terminal of the first transmitting transformer 10, a power VCC is superimposed on the center of the output terminal of the first transmitting transformer 10, the power VCC is outputted by the first coupling power management circuit 14, and then transmitted to the second receiving transformer 20, which corresponds to a power bias being applied to the output signal. In addition, when the first signal transmission module 100 and the second signal transmission module 200 do not limit transmission of the differential signals described above.
The differential signal with the bias power is transmitted to the second receiving transformer 20, a signal is led out from the center of the second receiving transformer 20 to the second split power management circuit 24, the signal is the power VCC following the signal transmission, the second split power management circuit 24 has the input voltage VCC, then outputs corresponding other power to supply power to the first signal transmission module 100, and also supplies power to other power utilization modules, the signal input to the second receiving transformer 20, due to the characteristics of the transformer, only the ac signal is transmitted, the signal output by the transformer is the normal ac signal without bias voltage, and the Vref bias voltage output by the second split power management circuit 24 is added to the midpoint of the output end of the second receiving transformer 20, so that the signals of the two output ports of the second receiving transformer 20 are above 0 level, and then transmitted to the second differential signal converter 22, and then a normal high-speed single-ended signal is output to the second data processor 23 after the integration processing, thereby realizing the data transmission.
Therefore, the invention couples the power line number and the differential signal for transmission, saves the interface terminal occupied by the input of the power signal VCC, transmits more data by using the limited interface number, and realizes more functions.
As shown in fig. 2, in some embodiments of the present invention, the first signal transmission module 100 further includes a first receiving transformer 11 and a first split power management circuit 15, wherein a middle tap of an input end of the first receiving transformer 11 is electrically connected to an input end of the first split power management circuit 15 to split a power signal VCC, a middle tap of an output end of the first receiving transformer 11 is electrically connected to a reference end Vref of the first split power management circuit 15 to enable the first receiving transformer 11 to output a differential signal, and the first split power management circuit 15 outputs at least one voltage signal according to the power signal VCC.
The second signal transmission module 200 further includes a second transmitting transformer 21 and a second coupling power management circuit 25, where an intermediate tap at an input end of the second transmitting transformer 21 is grounded GND, an intermediate tap at an output end of the second transmitting transformer 21 is electrically connected to an output end of the second coupling power management circuit 25, an input end of the second transmitting transformer 21 is connected to a differential signal, and a power signal VCC transmitted by the second coupling power management circuit 25 is transmitted to the second receiving transformer 20, so that the second receiving transformer 20 outputs the coupled differential signal and power signal.
In a preferred scheme, the first receiving transformer 11 and the second sending transformer 21 have the same structure, so that the influence on differential signals in the transmission process is reduced, and the stability of differential signal transmission is ensured.
In these embodiments, the first signal transmission module 100 has both functions of transmitting and receiving signals, and the second signal transmission module 200 also has both functions of transmitting and receiving signals, so that when the power and differential signal network transmission device of the present invention is applied to headphones, the two headphones have the same function, and an interface, an internal function module, etc. can be set according to actual needs.
As shown in fig. 2, in some embodiments of the present invention, the first signal transmission module 100 further includes a first handshake identification circuit 16, the first handshake identification circuit 16 is electrically connected to the enable terminal of the first split power management circuit 15, the first handshake identification circuit 16 is electrically connected to the first data processor 13, the second signal transmission module 200 further includes a second handshake identification circuit 26, the second handshake identification circuit 26 is electrically connected to the enable terminal of the second split power management circuit 24, and the second handshake identification circuit 26 is electrically connected to the second data processor 23.
The first handshake identification circuit 16 and the second handshake identification circuit 26 handshake successfully, and transmit an enabling signal to the first split power management circuit 15 or the second split power management circuit 24, so that the first split power management circuit 15 or the second split power management circuit 24 outputs at least one voltage signal according to the power signal VCC.
Preferably, the first handshake identification circuit 16 and the second handshake identification circuit 26 are wireless communication connections, such as bluetooth communication connections between the first handshake identification circuit 16 and the second handshake identification circuit 26.
When the power supply and differential signal same-network transmission device is applied to a headset, and the headset comprises a left headset and a right headset, the first signal transmission module 100 can be arranged in the left headset, and the second signal transmission module 200 can be arranged in the right headset. When the first signal transmission module 100 transmits the coupled power signal and the differential signal to the second signal transmission module 200, the second split power management module can split the power signal VCC and output a desired operating voltage signal according to the earphone requirement.
When the first handshake identification circuit 16 and the second handshake identification circuit 26 work, after the first handshake identification circuit 16 and the second handshake identification circuit 26 handshake successfully, the second handshake identification circuit 26 transmits an enabling signal to the second split power management, so that the second split power management work can output a voltage signal to provide a power signal VCC (working voltage) for the right earphone, when the first handshake identification circuit 16 and the second handshake identification circuit 26 handshake unsuccessfully, the second handshake identification circuit 26 does not transmit the enabling signal to the second split power management circuit 24, and the second split power management circuit 24 cannot output the voltage signal, so that the left earphone and the right earphone cannot be matched for use. Of course, when the handshake between the first handshake identification circuit 16 and the second handshake identification circuit 26 is unsuccessful, the first handshake identification circuit 16 may transmit a corresponding electrical signal to the first data processor 13 to inform the left earphone, or the second handshake identification circuit 26 may transmit a corresponding electrical signal to the second data processor 23 to inform the right earphone.
In addition, whether the first handshake identification circuit 16 is in use or not may be controlled by the first data processor 13, and whether the second handshake identification circuit 26 is in use or not may be controlled by the second data processor 23, such as controlling the enabling end of the first handshake identification circuit 16 or the second handshake identification circuit 26.
The second signal transmission module 200 is used as a data transmission module, and when the first signal transmission module 100 is used as a data receiving module, whether the first split power management circuit 15 outputs a voltage signal or not can also be controlled by the first handshake identification circuit 16 according to the above principle.
It should be noted that, when the first signal transmission module 100 and the second signal transmission module 200 of the present invention are applied to a bluetooth headset, a handshake recognition circuit may not be provided, and the bluetooth headset may be paired to perform recognition, and specifically, the enabling ends of the first split power management circuit 15 and the second split power management circuit 24 may be controlled by the bluetooth module.
In some embodiments of the present invention, the reference voltage values output by the reference terminals Vref of the first split power management circuit 15 and the second split power management circuit 24 are set according to the differential signal and the minimum voltage fluctuation allowable value. By setting the reference voltage value output from the reference terminal Vref, the first differential signal converter 12 and the second differential signal converter 22 can be ensured to output stable differential signals. For example, the differential signal may range from + -1.2V, the minimum voltage ripple may be 0.6V, and the reference voltage may be set to 1.8V.
According to the second aspect of the invention, the earphone comprises the power supply and differential signal same network transmission device of the first aspect of the invention, the earphone can be a headphone, a Bluetooth earphone and the like, the earphone comprises a left earphone and a right earphone, a battery is arranged in the left earphone, or the battery is arranged in the right earphone, and the power supply signal VCC can be transmitted in the first signal transmission module 100 and/or the second signal transmission module 200, so that one of the left earphone and the right earphone is provided with the battery, thereby saving space and reducing the overall weight.
The earphone of the invention saves the terminal of the power supply signal VCC in the interface because the power supply and differential signal same-network transmission device is arranged, so that the earphone transmits more data by utilizing the limited interface number and realizes more functions.
In summary, the differential signal and the power supply are integrated and transmitted, and the combined signal is separated into the differential signal and the power supply through the combined transformer after the transmission, so that the power supply and the differential signal transmission are realized, transmission lines and interfaces are saved, and meanwhile, the signal can be converted into a single-ended signal through the differential signal converter, so that the signal interference of the high-speed signal in the transmission is reduced, and the accuracy of the signal transmission is ensured.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention, but is intended to cover any modifications, equivalent to those of the power and differential signal transmission device and earphone, within the spirit and principles of the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411611908.6A CN119521067B (en) | 2024-11-12 | 2024-11-12 | A power supply and differential signal transmission device and headphones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411611908.6A CN119521067B (en) | 2024-11-12 | 2024-11-12 | A power supply and differential signal transmission device and headphones |
Publications (2)
| Publication Number | Publication Date |
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| CN119521067A CN119521067A (en) | 2025-02-25 |
| CN119521067B true CN119521067B (en) | 2025-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411611908.6A Active CN119521067B (en) | 2024-11-12 | 2024-11-12 | A power supply and differential signal transmission device and headphones |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117793569A (en) * | 2023-12-28 | 2024-03-29 | 钜泉微电子(上海)有限公司 | Magnetic coupling electrical isolation communication device, method and electric energy meter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5994998A (en) * | 1997-05-29 | 1999-11-30 | 3Com Corporation | Power transfer apparatus for concurrently transmitting data and power over data wires |
| US10374813B2 (en) * | 2015-08-07 | 2019-08-06 | The Boeing Company | Coupler for power line communication and power-over-ethernet |
| US10333742B1 (en) * | 2018-03-15 | 2019-06-25 | Linear Technology Holding Llc | Termination for wire pair carrying DC and differential signals using isolation transformer with split primary and secondary windings |
| TWI762909B (en) * | 2020-04-21 | 2022-05-01 | 美律實業股份有限公司 | Headset charging and data transmission system |
| CN111901012A (en) * | 2020-07-23 | 2020-11-06 | 深圳市奥拓电子股份有限公司 | Ethernet communication module and electronic system for simultaneously transmitting two signals |
| CN113645167B (en) * | 2021-10-13 | 2022-02-15 | 深圳市维海德技术股份有限公司 | Method, system, device and storage medium for transmitting digital audio and power signals |
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- 2024-11-12 CN CN202411611908.6A patent/CN119521067B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117793569A (en) * | 2023-12-28 | 2024-03-29 | 钜泉微电子(上海)有限公司 | Magnetic coupling electrical isolation communication device, method and electric energy meter |
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