CN102722465B - A kind of interface duplex device and electronic equipment - Google Patents
A kind of interface duplex device and electronic equipment Download PDFInfo
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- CN102722465B CN102722465B CN201210167957.6A CN201210167957A CN102722465B CN 102722465 B CN102722465 B CN 102722465B CN 201210167957 A CN201210167957 A CN 201210167957A CN 102722465 B CN102722465 B CN 102722465B
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Abstract
The present invention is applicable to belong to Design Technique of Interface field, provides a kind of interface duplex device and electronic equipment.Device wherein comprises: multiplex interface, for receiving the signal transmission that external unit sends; Switch unit, for identifying that signal transmission is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result.This device utilizes the level differences between Fast Ethernet signal and differential serial signals, automatic identification transmission of signal-type, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result, achieve interface duplex function, solving existing Electronic equipment panel can the problem of usage space anxiety, for the miniaturization of product provides possibility, be conducive to popularization and the application of electronic equipment.
Description
Technical field
The invention belongs to Design Technique of Interface field, particularly relate to a kind of interface duplex device and electronic equipment.
Background technology
In the middle of data communication, computer network and distributed industrial control system, often need to use serial communication interface to realize the exchanges data with external unit, need to use Fast Ethernet (FastEthernet, FE) interface to be connected to Ethernet simultaneously.Conventional serial communication interface has RS-232 interface, RS-485 interface, RS-422 interface etc.
But, along with increasing of electronic functionalities, and the reduction of small product size, in electronic equipment panel can usage space more and more nervous, even cannot hold serial communication interface and fastethernet interface simultaneously, make the range of application of product limited, be unfavorable for popularization and the application of electronic product.
Summary of the invention
The object of the present invention is to provide a kind of interface duplex device, be intended to solve in prior art, electronic equipment due to panel can the restriction of usage space, serial communication interface and fastethernet interface cannot be held simultaneously, limit the problem of electronic apparatus application scope.
The present invention is achieved in that a kind of interface duplex device, and described device comprises:
Multiplex interface, for receiving the signal transmission that external unit sends;
Switch unit, for identifying that the described signal transmission that described multiplex interface receives is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result.
Another object of the present invention is to, additionally provide a kind of electronic equipment, comprise a panel, described panel comprises Fast Ethernet signal processing unit, differential serial signals processing unit, described panel also comprises an interface duplex device, and described interface duplex device comprises:
Multiplex interface, for receiving the signal transmission that external unit sends;
Switch unit, for identifying that the described signal transmission that described multiplex interface receives is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result.
The interface duplex device that the embodiment of the present invention provides utilizes the level differences between Fast Ethernet signal and differential serial signals, the transmission of signal-type that automatic identification multiplex interface receives, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result, achieve interface duplex function, solving existing Electronic equipment panel can the problem of usage space anxiety, for the miniaturization of product provides possibility, be conducive to popularization and the application of electronic equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the interface duplex device that the embodiment of the present invention provides;
Fig. 2 is the circuit diagram of Fig. 1.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
For prior art Problems existing, the interface duplex device that the embodiment of the present invention provides utilizes the level differences between Fast Ethernet signal and differential serial signals, the transmission of signal-type that automatic identification multiplex interface receives, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result.
Fig. 1 shows the principle of the interface duplex device that the embodiment of the present invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
The interface duplex device that the embodiment of the present invention provides comprises: multiplex interface 12, for receiving the signal transmission that external unit sends; Switch unit 11, for identifying that the signal transmission that multiplex interface 12 receives is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface 12 and Electronic equipment panel or differential serial signals processing unit according to recognition result, thus achieve interface duplex function, solving existing Electronic equipment panel can the problem of usage space anxiety, for the miniaturization of product provides possibility, be conducive to popularization and the application of electronic equipment.
Fig. 2 shows the circuit of Fig. 1.
Switch unit 11 comprises: single-pole double-throw switch (SPDT) K1, single-pole double-throw switch (SPDT) K2, single-pole double-throw switch (SPDT) K3, single-pole double-throw switch (SPDT) K4 and voltage detection unit 111.The positive pin of multiplexing transmission of multiplex interface 12 connects the moving contact of single-pole double-throw switch (SPDT) K1, the moving contact of pin connection single-pole double-throw switch (SPDT) K3 is born in the multiplexing transmission of multiplex interface 12, the positive pin of multiplexing reception of multiplex interface 12 connects the moving contact of single-pole double-throw switch (SPDT) K2, and the multiplexing reception of multiplex interface 12 bears the moving contact of pin connection single-pole double-throw switch (SPDT) K4; a stationary contact of single-pole double-throw switch (SPDT) K1 sends positive pin as Fast Ethernet signal and connects Fast Ethernet signal processing unit, another stationary contact of single-pole double-throw switch (SPDT) K1 sends positive pin as differential serial signals and connects differential serial signals processing unit, a stationary contact of single-pole double-throw switch (SPDT) K2 connects Fast Ethernet signal processing unit as the positive pin of Fast Ethernet Signal reception, another stationary contact of single-pole double-throw switch (SPDT) K2 receives positive pin as differential serial signals and connects differential serial signals processing unit, a stationary contact of single-pole double-throw switch (SPDT) K3 sends negative pin as Fast Ethernet signal and connects Fast Ethernet signal processing unit, another stationary contact of single-pole double-throw switch (SPDT) K3 sends negative pin as differential serial signals and connects differential serial signals processing unit, a stationary contact of single-pole double-throw switch (SPDT) K4 is born pin as Fast Ethernet Signal reception and is connected Fast Ethernet signal processing unit, another stationary contact of single-pole double-throw switch (SPDT) K4 receives negative pin as differential serial signals and connects differential serial signals processing unit, the multiplexing reception of one input pin connection multiplexing interface 12 of voltage detection unit 111 bears pin, the positive pin of multiplexing reception of another input pin connection multiplexing interface 12 of voltage detection unit 111, the output pin of voltage detection unit 111 connects single-pole double-throw switch (SPDT) K1, single-pole double-throw switch (SPDT) K2, single-pole double-throw switch (SPDT) K3 and single-pole double-throw switch (SPDT) K4.
In the embodiment of the present invention, voltage detection unit 111 utilizes the level differences between Fast Ethernet signal and differential serial signals, that is: the feature of the level range of Fast Ethernet signal and the level range non-overlapping copies of differential serial signals realizes the type detection to signal transmission, then voltage detection unit 111 prestores a compare threshold, and this compare threshold is the arbitrary value between the maximal value of the waveform absolute value of Fast Ethernet signal and the minimum value of the waveform absolute value of differential serial signals.Voltage detection unit 111 identifies whether the signal transmission that multiplex interface 12 receives is greater than this compare threshold, that another stationary contact of the moving contact and single-pole double-throw switch (SPDT) K1 that control single-pole double-throw switch (SPDT) K1 is connected, another stationary contact of the moving contact and single-pole double-throw switch (SPDT) K2 that control single-pole double-throw switch (SPDT) K2 is connected, another stationary contact of the moving contact and single-pole double-throw switch (SPDT) K3 that control single-pole double-throw switch (SPDT) K3 is connected, another stationary contact of the moving contact and single-pole double-throw switch (SPDT) K4 that control single-pole double-throw switch (SPDT) K4 is connected, thus the signal path established between multiplex interface 12 and differential serial signals processing unit, otherwise a stationary contact of single-pole double-throw switch (SPDT) K4 was connected, controlled to a stationary contact of single-pole double-throw switch (SPDT) K3 was connected, controlled to a stationary contact of single-pole double-throw switch (SPDT) K2 was connected, controlled to a stationary contact of the moving contact and single-pole double-throw switch (SPDT) K1 that control single-pole double-throw switch (SPDT) K1 moving contact and single-pole double-throw switch (SPDT) K2 moving contact and single-pole double-throw switch (SPDT) K3 moving contact and single-pole double-throw switch (SPDT) K4 is connected, thus establishes the signal path between multiplex interface 12 and Fast Ethernet signal processing unit.
Are RJ45 interfaces with multiplex interface 12 below, differential serial signals processing unit is RS485 signal processing unit is example, illustrates the principle of work of foregoing circuit:
As everyone knows, the minimum value of the waveform absolute value of differential serial signals is 1.5V, and the maximal value of the waveform absolute value of Fast Ethernet signal is 1.285V, then the compare threshold that voltage detection unit 111 prestores is the arbitrary value between 1.5V and 1.285V.
Voltage detection unit 111 when the signal transmission identifying that multiplex interface 12 receives is greater than this compare threshold, then can confirms that this signal transmission is RS485 signal, otherwise can confirm that this signal transmission is Fast Ethernet signal.Voltage detection unit 11 is by the control to single-pole double-throw switch (SPDT) K1, single-pole double-throw switch (SPDT) K2, single-pole double-throw switch (SPDT) K3 and single-pole double-throw switch (SPDT) K4, thus the signal path between the Fast Ethernet signal processing unit set up on multiplex interface 12 and Electronic equipment panel or differential serial signals processing unit.
The embodiment of the present invention additionally provides a kind of electronic equipment, comprises a panel, and this panel comprises again Fast Ethernet signal processing unit, differential serial signals processing unit and an interface duplex device as above.
The interface duplex device that the embodiment of the present invention provides utilizes the level differences between Fast Ethernet signal and differential serial signals, the transmission of signal-type that automatic identification multiplex interface receives, and set up the signal path between Fast Ethernet signal processing unit on multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result, achieve interface duplex function, solving existing Electronic equipment panel can the problem of usage space anxiety, for the miniaturization of product provides possibility, be conducive to popularization and the application of electronic equipment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an interface duplex device, is characterized in that, described device comprises:
Multiplex interface, for receiving the signal transmission that external unit sends;
Switch unit, for identifying that the described signal transmission that described multiplex interface receives is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result;
Described switch unit comprises voltage detection unit, voltage detection unit utilizes the level differences between Fast Ethernet signal and differential serial signals, be specially, the type detection to signal transmission is realized with the level range non-overlapping copies of the level range of Fast Ethernet signal and differential serial signals, described voltage detection unit is used for the compare threshold that prestores, and identify whether the described signal transmission that described multiplex interface receives is greater than described compare threshold, if, then set up the signal path between the differential serial signals processing unit on described multiplex interface and Electronic equipment panel, if not, then set up the signal path between the Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel,
Described compare threshold is the arbitrary value between the maximal value of the waveform absolute value of described Fast Ethernet signal and the minimum value of the waveform absolute value of described differential serial signals.
2. interface duplex device as claimed in claim 1, it is characterized in that, described switch unit comprises: single-pole double-throw switch (SPDT) K1, single-pole double-throw switch (SPDT) K2, single-pole double-throw switch (SPDT) K3, single-pole double-throw switch (SPDT) K4;
The positive pin of multiplexing transmission of described multiplex interface connects the moving contact of described single-pole double-throw switch (SPDT) K1, the moving contact that pin connects described single-pole double-throw switch (SPDT) K3 is born in the multiplexing transmission of described multiplex interface, the positive pin of multiplexing reception of described multiplex interface connects the moving contact of described single-pole double-throw switch (SPDT) K2, and the multiplexing reception of described multiplex interface bears the moving contact that pin connects described single-pole double-throw switch (SPDT) K4;
A stationary contact of described single-pole double-throw switch (SPDT) K1 sends positive pin as Fast Ethernet signal and connects described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K1 sends positive pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K2 connects described Fast Ethernet signal processing unit as the positive pin of Fast Ethernet Signal reception, another stationary contact of described single-pole double-throw switch (SPDT) K2 receives positive pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K3 sends negative pin as Fast Ethernet signal and connects described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K3 sends negative pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K4 is born pin as Fast Ethernet Signal reception and is connected described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K4 receives negative pin as differential serial signals and connects described differential serial signals processing unit,
The described multiplexing reception that one input pin of described voltage detection unit connects described multiplex interface bears pin, another input pin of described voltage detection unit connects the positive pin of multiplexing reception of described multiplex interface, and the output pin of described pressure detecting unit connects the control end of the control end of described single-pole double-throw switch (SPDT) K1, the control end of single-pole double-throw switch (SPDT) K2, the control end of single-pole double-throw switch (SPDT) K3 and single-pole double-throw switch (SPDT) K4 respectively.
3. interface duplex device as claimed in claim 2, it is characterized in that, whether the described signal transmission that described in described voltage detection unit identification, multiplex interface receives is greater than described compare threshold, that another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K1 that control described single-pole double-throw switch (SPDT) K1 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K2 that control described single-pole double-throw switch (SPDT) K2 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K3 that control described single-pole double-throw switch (SPDT) K3 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K4 that control described single-pole double-throw switch (SPDT) K4 is connected, otherwise a stationary contact of described single-pole double-throw switch (SPDT) K4 was connected, controlled to a stationary contact of described single-pole double-throw switch (SPDT) K3 was connected, controlled to a stationary contact of described single-pole double-throw switch (SPDT) K2 was connected, controlled to a stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K1 that control described single-pole double-throw switch (SPDT) K1 moving contact and described single-pole double-throw switch (SPDT) K2 moving contact and described single-pole double-throw switch (SPDT) K3 moving contact and described single-pole double-throw switch (SPDT) K4 is connected.
4. interface duplex device as claimed in claim 3, it is characterized in that, described multiplex interface is RJ45 interface, and described differential serial signals processing unit is RS485 signal processing unit, and described compare threshold is the arbitrary value between 1.5V and 1.285V.
5. an electronic equipment, comprises a panel, and described panel comprises Fast Ethernet signal processing unit, differential serial signals processing unit, it is characterized in that, described panel also comprises an interface duplex device, and described interface duplex device comprises:
Multiplex interface, for receiving the signal transmission that external unit sends;
Switch unit, for identifying that the described signal transmission that described multiplex interface receives is Fast Ethernet signal or differential serial signals, and set up the signal path between Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel or differential serial signals processing unit according to recognition result;
Described switch unit comprises voltage detection unit, voltage detection unit utilizes the level differences between Fast Ethernet signal and differential serial signals, be specially, the type detection to signal transmission is realized with the level range non-overlapping copies of the level range of Fast Ethernet signal and differential serial signals, described voltage detection unit is used for the compare threshold that prestores, and identify whether the described signal transmission that described multiplex interface receives is greater than described compare threshold, if, then set up the signal path between the differential serial signals processing unit on described multiplex interface and Electronic equipment panel, if not, then set up the signal path between the Fast Ethernet signal processing unit on described multiplex interface and Electronic equipment panel,
Described compare threshold is the arbitrary value between the maximal value of the waveform absolute value of described Fast Ethernet signal and the minimum value of the waveform absolute value of described differential serial signals.
6. electronic equipment as claimed in claim 5, it is characterized in that, described switch unit comprises: single-pole double-throw switch (SPDT) K1, single-pole double-throw switch (SPDT) K2, single-pole double-throw switch (SPDT) K3, single-pole double-throw switch (SPDT) K4;
The positive pin of multiplexing transmission of described multiplex interface connects the moving contact of described single-pole double-throw switch (SPDT) K1, the moving contact that pin connects described single-pole double-throw switch (SPDT) K3 is born in the multiplexing transmission of described multiplex interface, the positive pin of multiplexing reception of described multiplex interface connects the moving contact of described single-pole double-throw switch (SPDT) K2, and the multiplexing reception of described multiplex interface bears the moving contact that pin connects described single-pole double-throw switch (SPDT) K4;
A stationary contact of described single-pole double-throw switch (SPDT) K1 sends positive pin as Fast Ethernet signal and connects described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K1 sends positive pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K2 connects described Fast Ethernet signal processing unit as the positive pin of Fast Ethernet Signal reception, another stationary contact of described single-pole double-throw switch (SPDT) K2 receives positive pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K3 sends negative pin as Fast Ethernet signal and connects described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K3 sends negative pin as differential serial signals and connects described differential serial signals processing unit, a stationary contact of described single-pole double-throw switch (SPDT) K4 is born pin as Fast Ethernet Signal reception and is connected described Fast Ethernet signal processing unit, another stationary contact of described single-pole double-throw switch (SPDT) K4 receives negative pin as differential serial signals and connects described differential serial signals processing unit,
The described multiplexing reception that one input pin of described voltage detection unit connects described multiplex interface bears pin, another input pin of described voltage detection unit connects the positive pin of multiplexing reception of described multiplex interface, and the output pin of described pressure detecting unit connects the control end of the control end of described single-pole double-throw switch (SPDT) K1, the control end of single-pole double-throw switch (SPDT) K2, the control end of single-pole double-throw switch (SPDT) K3 and single-pole double-throw switch (SPDT) K4 respectively.
7. electronic equipment as claimed in claim 6, it is characterized in that, whether the described signal transmission that described in described voltage detection unit identification, multiplex interface receives is greater than described compare threshold, that another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K1 that control described single-pole double-throw switch (SPDT) K1 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K2 that control described single-pole double-throw switch (SPDT) K2 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K3 that control described single-pole double-throw switch (SPDT) K3 is connected, another stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K4 that control described single-pole double-throw switch (SPDT) K4 is connected, otherwise a stationary contact of described single-pole double-throw switch (SPDT) K4 was connected, controlled to a stationary contact of described single-pole double-throw switch (SPDT) K3 was connected, controlled to a stationary contact of described single-pole double-throw switch (SPDT) K2 was connected, controlled to a stationary contact of the moving contact and described single-pole double-throw switch (SPDT) K1 that control described single-pole double-throw switch (SPDT) K1 moving contact and described single-pole double-throw switch (SPDT) K2 moving contact and described single-pole double-throw switch (SPDT) K3 moving contact and described single-pole double-throw switch (SPDT) K4 is connected.
8. electronic equipment as claimed in claim 7, it is characterized in that, described multiplex interface is RJ45 interface, and described differential serial signals processing unit is RS485 signal processing unit, and described compare threshold is the arbitrary value between 1.5V and 1.285V.
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| CN201210167957.6A CN102722465B (en) | 2012-05-28 | 2012-05-28 | A kind of interface duplex device and electronic equipment |
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| CN103269298B (en) * | 2013-05-23 | 2016-01-27 | 华为技术有限公司 | A kind of bus adaptive method for switching and device |
| CN103678237B (en) * | 2013-12-19 | 2018-04-27 | 华为技术有限公司 | The docking calculation and device of transmission equipment satellite interface |
| CN103838693B (en) * | 2014-02-28 | 2017-10-13 | 努比亚技术有限公司 | The device and mobile terminal of data transfer |
| CN105187820B (en) * | 2015-09-21 | 2017-08-25 | 深圳创维数字技术有限公司 | A kind of signal transfer management method and set top box |
| CN107273320A (en) * | 2016-04-08 | 2017-10-20 | 中兴通讯股份有限公司 | A kind of adaptive multiplexer of communication interface hardware and method |
| CN107219881A (en) * | 2017-06-27 | 2017-09-29 | 歌尔科技有限公司 | A kind of the connection circuit and separate type call bracelet of bracelet of being conversed for separate type |
| CN107463523A (en) * | 2017-08-17 | 2017-12-12 | 迈普通信技术股份有限公司 | Communication equipment and extension neck multiplexing method |
| CN109086233B (en) * | 2018-06-30 | 2020-12-08 | 惠州华阳通用电子有限公司 | Communication type automatic identification and switching device and method |
| CN109117400B (en) * | 2018-08-09 | 2021-01-05 | 深圳市宏电技术股份有限公司 | Automatic interface switching device and method |
| CN112737566B (en) * | 2021-04-02 | 2021-06-22 | 荣耀终端有限公司 | Interface conversion circuit and electronic equipment |
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| US7046664B2 (en) * | 2001-10-17 | 2006-05-16 | Broadcom Corporation | Point-to-multipoint network interface |
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| CN1863351A (en) * | 2005-05-13 | 2006-11-15 | 中兴通讯股份有限公司 | Wireless communication cell phone apparatus |
| CN101452051A (en) * | 2007-12-04 | 2009-06-10 | 联想移动通信科技有限公司 | Data processing device and method |
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