CN107656720B - Circuit for automatically identifying coaxial audio line access - Google Patents
Circuit for automatically identifying coaxial audio line access Download PDFInfo
- Publication number
- CN107656720B CN107656720B CN201710919905.2A CN201710919905A CN107656720B CN 107656720 B CN107656720 B CN 107656720B CN 201710919905 A CN201710919905 A CN 201710919905A CN 107656720 B CN107656720 B CN 107656720B
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- China
- Prior art keywords
- coaxial
- shell ground
- coaxial audio
- detection
- circuit
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier
Abstract
The circuit for automatically identifying the access of the coaxial audio line comprises a first shell ground and a second shell ground, wherein the first shell ground is disconnected with the second shell ground, the first shell ground is grounded, the second shell ground is connected with the detection part, the coaxial audio line is connected with the coaxial audio output part, and the first shell ground is conducted with the second shell ground. Has the advantages that: the method and the device realize automatic identification of whether the coaxial audio line is accessed or not, prompt whether the television accompanying sound is switched to coaxial output or not, and simplify the operation of products.
Description
Technical Field
The invention belongs to the technical field of image communication, relates to an audio output circuit of a flat-panel television, and particularly relates to a circuit for automatically identifying coaxial audio line access.
Background
The coaxial audio is an audio interface and has input and output functions, and different from the traditional audio interface, the coaxial audio integrates an interface of a microphone (an input interface) and an interface of an earphone or a sound (an output interface).
At present, all flat televisions have a coaxial audio output function, in actual use, after a plurality of users manually access coaxial audio lines, the users need to use a remote controller to select coaxial audio output in complicated settings, and under the condition that the users are unfamiliar with operation, the product is slightly complex, the operation difficulty is increased, and the user use experience is reduced.
Disclosure of Invention
The invention aims to solve the problem that after a user manually accesses a coaxial audio line, the user needs to select coaxial audio output in complicated settings by using a remote controller, and the product is slightly complicated under the condition that the user is unfamiliar with operation.
The technical scheme of the invention is as follows: the utility model provides an automatic circuit that discernment coaxial audio line accessed, the circuit includes coaxial audio output module, detection module will coaxial audio output module and coaxial audio line's the signal transmission to the AD detection mouth of MCU module, the MCU module sends tip information to the user through confirming the connection signal.
According to the invention, the detection module is arranged to automatically detect and identify the connection condition of the coaxial audio output module and the coaxial audio line, when the coaxial audio module is connected with the coaxial audio line, the detection module identifies the connection signal, then transmits the connection signal to the AD detection port of the MCU module, and finally sends the prompt information of successful connection to the user, so that the operation of the user is simplified, and the user experience is improved.
Preferably, the coaxial audio output module includes a first housing ground and a second housing ground, the first housing ground is disconnected from the second housing ground, the first housing ground is grounded, the second housing ground is electrically connected to the detection module, the coaxial audio line is connected to the coaxial audio output module, and the first housing ground is conducted to the second housing ground.
The invention sets the first shell ground and the second shell ground in the coaxial audio output module, the first shell ground and the second shell ground are in a normally open state, when the coaxial audio line is connected to the coaxial audio output module, the first shell ground and the second shell ground are conducted, and when the coaxial audio line is disconnected with the coaxial audio output module, the first shell ground and the second shell ground are simultaneously disconnected.
Preferably scheme, the detection module includes PNP triode, detection interface, resistance R1, resistance R2, PNP triode projecting pole resistance R1 one end is connected, the high level is connected to the resistance R1 other end, PNP triode base is connected the second shell ground, PNP triode collecting electrode respectively with the detection interface with resistance R2 one end is connected, the detection interface other end with the AD detection mouth of MCU module is connected, resistance R2 other end ground connection.
Preferably, the high level voltage is 3.3 volts, the resistor R1 is 10 kilo-ohms, and the resistor R2 is 1.2 kilo-ohms.
In the preferred scheme, the base electrode of the PNP triode is connected with one end of the transient suppression diode, and the other end of the transient suppression diode is grounded to protect the detection circuit.
The invention has the beneficial effects that: compared with the prior art, the invention has the advantages of realizing automatic identification of whether to access the coaxial audio line and prompting whether to switch the television accompanying sound to coaxial output, and simplifying the operation of the product. The circuit for automatically identifying the coaxial audio line access controlled by the man-machine is provided, a user can use the circuit without complex operation, and the convenience of man-machine interaction is improved.
Drawings
FIG. 1 is a schematic diagram of a circuit signal access method for automatically identifying coaxial audio line access according to the present invention;
fig. 2 is a schematic diagram of a circuit control for automatically identifying the coaxial audio line access according to the present invention.
Detailed Description
Embodiments of the present invention are designed in accordance with the principles of the present invention, which is further described below in conjunction with the drawings and the following detailed description.
As shown in fig. 1 and fig. 2, the circuit for automatically identifying the access of the coaxial audio line of the embodiment includes a coaxial audio output module and a detection module, the detection module transmits a connection signal between the coaxial audio output module and the coaxial audio line to an AD detection port of an MCU module, and the MCU module sends a prompt message to a user by confirming the connection signal. When the detection part detects that the coaxial audio output part is connected to the coaxial audio line, the detection part provides an electric signal for the AD detection port of the MCU module, and the flat-panel television prompts the accessed information of the coaxial audio line through the display screen.
In the preferred embodiment, the coaxial audio output module includes a housing ground 1 and a housing ground 2, the housing ground 1 is disconnected from the housing ground 2, the housing ground 1 is grounded, the housing ground 2 is electrically connected to the detection module, the coaxial audio line is connected to the coaxial audio output module, and the housing ground 1 is conducted to the housing ground 2. Detection module includes 3906 type PNP triode, detection interface, resistance R1, resistance 2, 3906 type PNP triode emitter with resistance R1 one end is connected, the high level is connected to the resistance R1 other end, 3906 type PNP triode base is connected 2 on the shell, 3906 type PNP triode collecting electrode respectively with detection interface with resistance R2 one end is connected, the detection interface other end with MCU module AD detects the mouth and connects, resistance R2 other end ground connection. When the coaxial audio line is connected to the coaxial audio output module, the shell ground 1 on the coaxial audio output module is conducted with the shell ground 2, at the moment, the base electrode of the 3906 type PNP triode is grounded, the 3906 type PNP triode is conducted, the collector electrode of the 3906 type PNP triode outputs a 0.7-volt electric signal to the detection interface, and after the duration time of the voltage signal is longer than 3 seconds, the television MCU module receives the signal and sends prompt information to a user through the television display screen after processing.
In a preferred embodiment, the high level voltage is 3.3 volts, the resistor R1 is 10 kilo-ohms, and the resistor R2 is 1.2 kilo-ohms.
In the scheme of the preferred embodiment, the base of the PNP triode is connected to one end of the transient suppression diode, and the other end of the transient suppression diode is grounded to protect the detection circuit.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (4)
1. A circuit for automatically identifying coaxial audio line access is characterized in that: the circuit includes coaxial audio output module, detection module, coaxial audio output module passes through with the connected signal of coaxial audio line the AD detection mouth that detection module transmitted the MCU module, the MCU module sends tip information to the user through confirming connected signal, coaxial audio output module includes first shell ground, second shell ground, first shell ground with second shell ground disconnection, first shell ground, the second shell ground with the detection module electricity is connected, coaxial audio line is connected behind the coaxial audio output module first shell ground with second shell ground switches on.
2. The circuit for automatically identifying coaxial line access of claim 1, wherein: the detection module includes PNP triode, detection interface, resistance R1, resistance R2, PNP triode projecting pole with resistance R1 one end is connected, the high level is connected to the resistance R1 other end, PNP triode base is connected the second shell ground, PNP triode collecting electrode respectively with the detection interface with resistance R2 one end is connected, the detection interface other end with the AD detection mouth of MCU module is connected, resistance R2 other end ground connection.
3. The circuit for automatically identifying coaxial line access of claim 2, wherein: the high level voltage is 3.3 volts, the resistor R1 is 10 kilo-ohms, and the resistor R2 is 1.2 kilo-ohms.
4. The circuit for automatically identifying coaxial line access of claim 2, wherein: the base electrode of the PNP triode is connected with one end of the transient suppression diode, and the other end of the transient suppression diode is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919905.2A CN107656720B (en) | 2017-09-30 | 2017-09-30 | Circuit for automatically identifying coaxial audio line access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919905.2A CN107656720B (en) | 2017-09-30 | 2017-09-30 | Circuit for automatically identifying coaxial audio line access |
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| Publication Number | Publication Date |
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| CN107656720A CN107656720A (en) | 2018-02-02 |
| CN107656720B true CN107656720B (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710919905.2A Active CN107656720B (en) | 2017-09-30 | 2017-09-30 | Circuit for automatically identifying coaxial audio line access |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020142893A1 (en) * | 2019-01-08 | 2020-07-16 | 深圳市大疆创新科技有限公司 | Radar access detection method, circuit and movable platform |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650641A (en) * | 2009-07-27 | 2010-02-17 | 浪潮电子信息产业股份有限公司 | Automatic identification device of two-in-one interface of SPDIF and Headphone |
| CN203734822U (en) * | 2013-12-24 | 2014-07-23 | Tcl通力电子（惠州）有限公司 | Automatic identification circuit for audio port connection modes and audio playback device |
| CN106843802A (en) * | 2017-03-13 | 2017-06-13 | 北京糖护科技有限公司 | The circuit and method of a kind of various standard cell phone earphone interfaces of automatic identification |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW589527B (en) * | 2002-09-20 | 2004-06-01 | Realtek Semiconductor Corp | Device and method for automatically recognizing output and input of analog signal |
| US8414326B2 (en) * | 2008-11-17 | 2013-04-09 | Rochester Institute Of Technology | Internal coaxial cable connector integrated circuit and method of use thereof |
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2017
- 2017-09-30 CN CN201710919905.2A patent/CN107656720B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650641A (en) * | 2009-07-27 | 2010-02-17 | 浪潮电子信息产业股份有限公司 | Automatic identification device of two-in-one interface of SPDIF and Headphone |
| CN203734822U (en) * | 2013-12-24 | 2014-07-23 | Tcl通力电子（惠州）有限公司 | Automatic identification circuit for audio port connection modes and audio playback device |
| CN106843802A (en) * | 2017-03-13 | 2017-06-13 | 北京糖护科技有限公司 | The circuit and method of a kind of various standard cell phone earphone interfaces of automatic identification |
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| CN107656720A (en) | 2018-02-02 |
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