CN108492543B - Host equipment, input control equipment and signal transmission detection method - Google Patents
Host equipment, input control equipment and signal transmission detection method Download PDFInfo
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- CN108492543B CN108492543B CN201810223586.6A CN201810223586A CN108492543B CN 108492543 B CN108492543 B CN 108492543B CN 201810223586 A CN201810223586 A CN 201810223586A CN 108492543 B CN108492543 B CN 108492543B
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
Abstract
The invention provides a host device, an input control device and a signal transmission detection method, wherein the signal transmission detection method comprises the following steps: providing, by the host device, a first level voltage; detecting a signal of a first signal connecting part of the input control equipment through a first detecting unit of the input control equipment; if the first detection unit detects that the signal of the first signal connection part is a first signal, judging that the first signal connection part of the input control equipment is coupled with the second signal connection part of the host equipment; and if the first detection unit detects that the signal of the first signal connection part is a second signal, determining that the first signal connection part of the input control device is not coupled with the second signal connection part of the host device, wherein the first signal is different from the second signal. Therefore, whether the input control equipment is connected with the host equipment or not is accurately judged.
Description
Technical Field
The present invention relates to the field of control signal transmission, and in particular, to a connection detection method for an input control device and a host device.
Background
The conventional remote control by wire control is used to turn off the wireless remote control function, avoid interference and save POWER, because the remote control is designed with a mechanism to detect whether the remote control is in a "wired connection" state with the host, the electrical specifications of the signal connections sleep, Tip and Ring are usually defined first, for example, three connection terminals pin1 (sleep), pin2(Tip) and pin3(Ring) are respectively defined as group, POWER and DATA.
Referring to the schematic circuit design of the remote controller 1a and the host 2a in fig. 1a and 1b, both ends use a 3pin signal connection part. When the signal connection part 12a of the remote controller 1a is not connected to the signal connection part 22a of the host 2a, the processing unit (MCU)11a of the remote controller 1a detects that the voltage level of the Tip loop is at the low level M, and when the signal connection part 12a of the remote controller 1a is wired to the signal connection part 22a of the host 2a, the processing unit 11a of the remote controller 1a detects that the voltage level of the Tip end is at the high level N. Here, the host 2a provides power Vcc to the pull-up resistor R1 through the pin2(Tip) terminal, and when the processing unit 11a of the remote controller 1a sends the signal I1, the processing unit 11a of the remote controller 1a transmits DATA (DATA) to the signal connection 22a of the host 2a through the pin3(Ring) terminal of the signal connection 12a of the remote controller 1a and receives the signal I1' to be transmitted to the processing unit (MCU)21a of the host 2 a.
However, there is a safety concern that the pin2(Tip) of the signal connection 22a of the host 2a provides power Vcc, and a safety protection mechanism needs to be additionally provided at the host 2 a. Therefore, some technicians will use the signal connection portion 12b with the metal dome switch at the remote controller 1 b.
Referring to the remote controllers 1b and 1 b' and the host 2b shown in fig. 2a, 2b and 2c, three connection terminals pin1(Sleeve), pin2(Tip) and pin3(Ring) are defined as group, NC and DATA, respectively.
However, the signal connection parts 12b and 12b 'of the metal dome switch are expensive, and this embodiment will increase the cost of the remote controllers 1b and 1 b'; moreover, as long as there is a wire inserted into the signal connection parts 12b and 12b ' of the remote controllers 1b and 1b ', the wire is not connected to the signal connection part 21b of the host 2b, and the processing unit (MUC) of the remote controllers 1b and 1b ' will determine "wired connection" first, which is likely to cause misjudgment and not meet the actual state.
Therefore, it is necessary to design a new host device, an input control device and a signal transmission detection method to overcome the above-mentioned drawbacks.
Disclosure of Invention
The present invention provides an input control device, a host device and a signal transmission detection method, which can accurately determine whether the input control device is connected to the host device, thereby avoiding erroneous determination.
In order to achieve the above object, the present invention provides a host device for connecting with an input control device to transmit a first signal, the input control device having a first signal connection part and a first detection unit electrically connected to the first signal connection part, the host device comprising a second processing unit having a signal input end; a second signal connection part for coupling with the first signal connection part, the second signal connection part being electrically connected with the signal input terminal; and a level voltage input unit electrically connected to the second signal connection part and the signal input terminal; when the first signal connection part is not coupled with the second signal connection part, the first detection unit detects that the first signal connection part has a first signal; when the first signal connection part is coupled with the second signal connection part, the level voltage input unit provides a first level voltage, the first detection unit detects that the first signal connection part has a second signal, and the first signal is different from the second signal.
Preferably, the second signal connection portion has a contact signal input terminal and a second ground terminal; the contact signal input terminal is electrically connected to the level voltage input unit, and the second ground terminal is connected to ground.
Preferably, the level voltage input unit has a first level voltage input terminal and a first resistor, one end of the first resistor is electrically connected to the first level voltage terminal, and the other end of the first resistor is electrically connected to the contact signal input terminal.
To achieve the above object, the present invention further provides an input control device for connecting with a host device to transmit a first signal, the host device having a second signal connection portion, the input control device comprising: a first detection unit; a first processing unit having a signal output terminal; and a first signal connection part coupled to the signal output end and the first detection unit; when the first signal connection part is not coupled with the second signal connection part, the first detection unit detects that the first signal connection part has a first signal, and when the first signal connection part is coupled with the second signal connection part, the host equipment provides a first level voltage so that the first detection unit detects that the first signal connection part has a second signal, wherein the first signal is different from the second signal.
Preferably, the input control device further comprises: one end of the signal amplifying unit is electrically connected with the signal output end, the other end of the signal amplifying unit is electrically connected with the first signal connecting part, and the first detecting unit is electrically connected between the signal amplifying unit and the first signal connecting part.
Preferably, the signal amplifying unit has a triode, a base of the triode is electrically connected to the signal output terminal, and a collector of the triode is electrically connected to the first signal connecting part.
Preferably, the first signal connecting portion has a contact signal output terminal and a first ground terminal; the contact signal output terminal is coupled to the signal output terminal and the first detection unit, and the first ground terminal is used for connecting a ground terminal.
Preferably, the first detecting unit has a second resistor, one end of the second resistor is connected between the first processing unit and the contact signal output end of the first signal connecting portion, and the other end of the second resistor is connected to ground.
Preferably, when the first detecting unit detects the second signal and the input control device transmits the first signal to the second signal connection portion of the host device through the first signal connection portion, the input control device controls the first detecting unit to stop detecting, and when the input control device does not transmit the first signal to the second signal connection portion of the host device through the first signal connection portion any more, the input control device controls the first detecting unit to continue detecting.
Preferably, after the first detecting unit detects the second signal, if the first detecting unit of the input control device detects the first signal again for a first predetermined time, it is determined that the first signal connecting part is not coupled to the second signal connecting part.
In order to achieve the above object, the present invention further provides a signal transmission detection method for signal transmission between an input control device and a host device, the signal transmission detection method comprising the steps of: providing, by the host device, a first level voltage; detecting a signal of a first signal connecting part of the input control equipment through a first detecting unit of the input control equipment; if the first detection unit detects that the signal of the first signal connection part is a first signal, judging that the first signal connection part of the input control equipment is coupled with the second signal connection part of the host equipment; and if the first detection unit detects that the signal of the first signal connection part is a second signal, determining that the first signal connection part of the input control equipment is not coupled with the second signal connection part of the host equipment, wherein the first signal is different from the second signal.
Compared with the prior art, the input control equipment, the host equipment and the signal transmission detection method provided by the invention have the advantages that the level voltage input unit is arranged on the host equipment, the detection unit is arranged on the input control equipment, and whether the input control equipment is connected with the host equipment or not is judged by detecting the signal change of the signal connecting part of the input control equipment, so that the accuracy of the detection result is ensured; the host equipment provides the level voltage, so that the situation that the detection effect is influenced by the reduction of the level voltage caused by the power consumption of mobile communication equipment such as input control equipment is avoided.
Drawings
FIG. 1a is a schematic circuit diagram of a remote controller according to an embodiment of the prior art;
FIG. 1b is a schematic circuit diagram of a host according to an embodiment of the prior art;
FIG. 2a is a schematic circuit diagram of a remote controller according to another embodiment of the prior art;
FIG. 2b is a schematic circuit diagram of a remote controller according to another embodiment of the prior art;
FIG. 2c is a schematic circuit diagram of a host according to another embodiment of the prior art;
fig. 3a is a schematic circuit structure diagram of an input control device according to an embodiment of the present invention;
FIG. 3b is a schematic circuit diagram of a host device according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a signal transmission detection method according to an embodiment of the invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Certain terms are used throughout the description and following claims to refer to particular components. As one of ordinary skill in the art will appreciate, manufacturers may refer to a component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
Referring to fig. 3a to 3b, schematic structural diagrams of a first embodiment of an input control device 1 and a host device 2 according to the present invention are disclosed. Fig. 3a is a schematic circuit structure diagram of the input control device 1 according to the embodiment of the present invention; fig. 3b is a schematic circuit diagram of the host device 2 according to the embodiment of the present invention. In practice, the input control device 1 may be a remote controller, a portable electronic device, etc., the host device 2 may be a server, a computer, etc., the input control device 1 may be connected to the host device 2 to transmit a first signal I1, where the first signal I1 is, for example, a coded control signal, and a user may operate through an input unit of the input control device 1 to form a first signal I1.
The input control device 1 includes a first processing unit 11, a first detecting unit 12 and a first signal connecting portion 13, the first processing unit 11 has a signal output end 111 and a detecting signal input end 112, and the first signal connecting portion 13 is coupled to the signal output end 111 and the first detecting unit 12. The first processing unit 11 is coupled to the host device 2 through the first signal connection portion 13, the first processing unit 11 sends a first signal I1 to the host device 2 through the signal output end 111, and the first processing unit 11 receives a signal from the first signal connection portion 13 sent by the first detecting unit 12 through the detecting signal input end 112.
The host device 2 includes a second processing unit 21, a second signal connecting portion 22 and a level voltage input unit 23, the second processing unit 21 has a signal input end 211, the second signal connecting portion 22 is electrically connected to the signal input end 211, and the level voltage input unit 23 is electrically connected to the second signal connecting portion 22. The second signal connector 22 of the host device 2 is coupled to the first signal connector 13 of the input control device 1, receives the first signal I1 from the input control device 1 to form a corresponding second signal I1 ', and transmits the second signal I1' to the second processing unit 21 of the host device 2. When the first signal connection 13 is not coupled to the second signal connection 22, the first detection unit 12 detects that the first signal connection 13 has the first signal M, and when the first signal connection 13 is coupled to the second signal connection 22, the host device 2 provides the first level voltage Vcc, so that the first detection unit 12 detects that the first signal connection 13 has the second signal N, where the first signal M is different from the second signal N.
Preferably, the input control device 1 has a signal amplifying unit 14, one end of the signal amplifying unit 14 is electrically connected to the signal output end 111, the other end of the signal amplifying unit 14 is electrically connected to the first signal connecting portion 13, and the first detecting unit 12 is electrically connected between the signal amplifying unit 14 and the first signal connecting portion 13. In the embodiment of the invention, the signal amplifying unit 14 has a transistor Q1, a base b of a transistor Q1 is electrically connected to the signal output terminal 111, a collector c of a transistor Q1 is electrically connected to the first signal connection portion 13, and an emitter of a transistor Q1 is connected to ground. When the first signal connection 13 is coupled to the second signal connection 22, if the signal output end 111 outputs the first signal I1, the transistor Q1 is connected to the circuit to amplify the first signal I1 to the second signal connection 22, and when the signal value of the first signal I1 changes, the voltage output by the collector c of the transistor Q1 changes at the same time, so as to realize the transmission of different encoding signals, for example.
In an embodiment, the first signal connection portion 13 has a contact signal output terminal pin3 and a first ground terminal pin1, i.e., the socket for connecting the power supply to the terminal pin2 shown in fig. 3a can be omitted compared to the conventional signal connection portion, all the above expressions referring to the first signal connection portion 13 refer to the connection with the contact signal output terminal pin3 of the first signal connection portion 13, i.e., the contact signal output terminal pin3 is coupled to the signal output terminal 111 and the first detection unit 12, and the first ground terminal pin1 of the first signal connection portion 13 is used for connecting the ground terminal. Further, the contact signal output terminal pin3 of the first signal connection part is electrically connected to the collector c of the transistor Q1 to output a variation signal of different collectors c formed by variation of the first signal I1 at the base b of the transistor Q1 to the host device 2, thereby realizing transmission of different input signals (e.g., codes).
Preferably, the first detecting unit 12 has a second resistor R2, and in practice, one end of the second resistor R2 is connected between the first processing unit 11 and the pin3 of the first signal connecting portion 13, and the other end of the second resistor R2 is connected to ground. Thus, when the contact signal output terminal pin3 is not electrically connected to the host device 2, the detection signal input terminal 112 of the first processing unit 11 detects the first signal M, and when the contact signal output terminal pin3 is electrically connected to the host device 2, the detection signal input terminal 112 of the first processing unit 11 detects the second signal N, in this embodiment, the first signal M is a low level signal, and the second signal N is a high level signal.
In practice, the second signal connection part 22 of the host device 2 has a contact signal input terminal pin3 and a second ground terminal pin1, the contact signal input terminal pin3 is electrically connected to the level voltage input unit 23, the second ground terminal pin1 is used for connecting to ground, i.e., compared to the conventional signal connection part, the socket terminal for connecting the power supply to the pin2 terminal shown in fig. 3b can be omitted, all the above expressions with the second signal connection part 22 refer to the connection with the contact signal input terminal pin3 of the second signal connection part 22, i.e., the contact signal input terminal pin3 is coupled to the signal input terminal 211 of the second processing unit 21 and the level voltage input unit 23. The level voltage input unit 23 has a first level voltage input terminal for providing a first level voltage Vcc, and a first resistor R1, wherein one end of the first resistor R1 is electrically connected to the first level voltage terminal Vcc, and the other end of the first resistor R1 is electrically connected to the contact signal input terminal pin3 and the signal input terminal 211 of the second processing unit 21. Thus, when the input control device 1 is electrically connected to the host device 2, the first reference voltage input terminal, the first resistor R1 and the transistor Q1 may form a loop when the signal output terminal 111 of the first processing unit 11 has the first signal I1 output, and when the first signal I1 transmitted to the base b of the transistor Q1 changes, the signal output to the second processing unit 21 of the host device 2 also changes, so as to satisfy the transmission of different signals. So, only need two pin ends can accomplish to connect in order to transmit signal, be favorable to the miniaturization of signal connecting portion and the saving of cost, simultaneously, need not to provide the power on signal connecting portion, guaranteed host computer equipment's security.
In practical operation, when the first detecting unit 12 detects the second signal N (high level signal), and the input control device 1 transmits the first signal I1 to the second signal connection 22 of the host device 2 through the first signal connection 13, the first processing unit 11 of the input control device 1 controls the first detecting unit 12 to stop detecting, and when the input control device 1 no longer transmits the first signal I1 to the second signal connection 22 of the host device 2 through the first signal connection 13, the input control device 1 controls the first detecting unit 12 to continue detecting. Thus, the energy consumption of the system can be reduced. Alternatively, when the first detecting unit 12 detects the second signal N (high level signal), if the first detecting unit 12 of the input control device 1 detects the first signal I1 again for the first preset time T1, it is determined that the first signal connecting portion 13 is disconnected from the second signal connecting portion 22.
The quasi-level voltage input unit is arranged on the host equipment, the detection unit is arranged on the input control equipment, whether the input control equipment is connected with the host equipment or not is judged by detecting the signal change of the signal connecting part of the input control equipment, the accuracy of a detection result is ensured, the quasi-level voltage is provided through the host equipment, and the situation that the detection effect is influenced due to the fact that the quasi-level voltage is reduced after the electric quantity of mobile communication equipment such as the input control equipment is consumed is avoided.
Referring to fig. 4, the present invention further provides a signal transmission detection method 100 for signal transmission between the input control device 1 and the host device 2 according to the above embodiment, wherein the signal transmission detection method 100 includes the steps of:
s001: providing a first level voltage by the host device 2;
s002: detecting a signal of a first signal connecting part of the input control equipment 1 through a first detecting unit of the input control equipment 1;
s003: if the first detecting unit detects that the signal of the first signal connecting part is the first signal M, it is determined that the first signal connecting part of the input control device 1 is coupled with the second signal connecting part of the host device 2, and in implementation, the coupling may be a wired connection of the input control device 1 and the host device 2 to achieve electrical communication; and
s004: if the first detecting unit detects that the signal of the first signal connecting part is the second signal N, it is determined that the first signal connecting part of the input control device 1 is not coupled to the second signal connecting part of the host device 2, and the first signal M is different from the second signal N. Other working processes and implementation manners are the same as those of the embodiment of the apparatus item, and the effect achieved by this embodiment is also the same as that of the embodiment, which is not described again here.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (11)
1. A host device is used for being connected with an input control device to transmit a first signal, the input control device is provided with a first signal connecting part, the input control device is characterized by also being provided with a first detecting unit, the first detecting unit is electrically connected with a contact signal output end of the first signal connecting part, and the host device comprises:
a second processing unit having a signal input terminal;
a second signal connection part for coupling with the first signal connection part, the second signal connection part electrically connected with the signal input end, the second signal connection part having a contact signal input end; and
a level voltage input unit electrically connected to the contact signal input terminal and the signal input terminal of the second signal connection part;
when the first signal connection part is not coupled with the second signal connection part, the first detection unit detects that the first signal connection part has a first signal; when the first signal connection part is coupled with the second signal connection part, the level voltage input unit provides a first level voltage, the first detection unit detects that the first signal connection part has a second signal, and the first signal is different from the second signal.
2. The host device of claim 1, wherein the second signal connection portion has a second ground terminal for connecting to ground.
3. The host device of claim 2, wherein the level voltage input unit has a first level voltage input terminal and a first resistor, one end of the first resistor is electrically connected to the first level voltage terminal, and the other end of the first resistor is electrically connected to the contact signal input terminal.
4. An input control device for connecting with a host device to transmit a first signal, the host device having a second signal connection, the input control device comprising:
a first detection unit;
a first processing unit having a signal output terminal; and
a first signal connection part coupled to the signal output terminal and the first detection unit, the first signal connection part having a contact signal output terminal coupled to the first detection unit;
wherein, the contact signal input end of the second signal connection part is electrically connected to the level voltage input unit; when the first signal connection part is not coupled with the second signal connection part, the first detection unit detects that the first signal connection part has a first signal, and when the first signal connection part is coupled with the second signal connection part, the host equipment provides a first level voltage so that the first detection unit detects that the first signal connection part has a second signal, wherein the first signal is different from the second signal.
5. The input manipulation device of claim 4 further comprising: one end of the signal amplifying unit is electrically connected with the signal output end, the other end of the signal amplifying unit is electrically connected with the first signal connecting part, and the first detecting unit is electrically connected between the signal amplifying unit and the first signal connecting part.
6. The input control device as claimed in claim 5, wherein the signal amplifying unit has a transistor, a base of the transistor is electrically connected to the signal output terminal, and a collector of the transistor is electrically connected to the first signal connection part.
7. The input control device as claimed in claim 4, wherein the first signal connection portion has a first ground terminal; the contact signal output terminal is coupled to the signal output terminal, and the first ground terminal is connected to a ground terminal.
8. The input control apparatus according to claim 7, wherein the first detecting unit has a second resistor, one end of the second resistor is connected between the first processing unit and the contact signal output terminal of the first signal connecting portion, and the other end of the second resistor is connected to ground.
9. The input control device as claimed in claim 4, wherein when the first detecting unit detects the second signal and the input control device transmits the first signal to the second signal connection portion of the host device through the first signal connection portion, the input control device controls the first detecting unit to stop detecting, and when the input control device does not transmit the first signal to the second signal connection portion of the host device through the first signal connection portion, the input control device controls the first detecting unit to continue detecting.
10. The input control device as claimed in claim 4, wherein after the first detecting unit detects the second signal, if the first detecting unit of the input control device detects the first signal again for a first predetermined time, it is determined that the first signal connecting part is not coupled to the second signal connecting part.
11. A signal transmission detection method is used for signal transmission between an input control device and a host device, and is characterized by comprising the following steps:
providing a first level voltage through a level voltage input unit of the host device;
detecting a signal of a contact signal output end of a first signal connecting part of the input control equipment through a first detecting unit of the input control equipment, wherein a contact signal input end of a second signal connecting part of the host equipment is coupled with the level voltage input unit;
if the first detection unit detects that the signal of the contact signal output end of the first signal connection part is a first signal, judging that the first signal connection part of the input control equipment is coupled with the second signal connection part of the host equipment; and
if the first detection unit detects that the signal of the contact signal output end of the first signal connection part is a second signal, it is determined that the first signal connection part of the input control device is not coupled with the second signal connection part of the host device, and the first signal is different from the second signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810223586.6A CN108492543B (en) | 2018-03-19 | 2018-03-19 | Host equipment, input control equipment and signal transmission detection method |
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| CN201810223586.6A CN108492543B (en) | 2018-03-19 | 2018-03-19 | Host equipment, input control equipment and signal transmission detection method |
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| CN108492543B true CN108492543B (en) | 2021-06-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3740340B2 (en) * | 1999-12-20 | 2006-02-01 | 松下電器産業株式会社 | Signal transmission device |
| CN2545718Y (en) * | 2002-06-13 | 2003-04-16 | 台达电子工业股份有限公司 | Connector with detecting signal |
| US8600080B2 (en) * | 2008-01-14 | 2013-12-03 | Apple Inc. | Methods for communicating with electronic device accessories |
| TWI462396B (en) * | 2011-11-04 | 2014-11-21 | Wistron Corp | Signal connecting module, electronic device, and connector identification method thereof |
| EP2770748B1 (en) * | 2013-02-26 | 2017-07-26 | BlackBerry Limited | Apparatus, systems and methods for detecting insertion or removal of an audio accessory from an electronic device |
| CN103259113A (en) * | 2013-05-21 | 2013-08-21 | 常熟泓淋电子有限公司 | Usb connector |
| CN104599672B (en) * | 2013-10-31 | 2018-04-03 | 瑞昱半导体股份有限公司 | There are the audio codec and audio grafting detection method of audio grafting detectability |
| CN105262354B (en) * | 2015-10-26 | 2017-12-01 | 苏州佳世达电通有限公司 | Sensing apparatus for AC power supply |
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