CN1127252C - Fault-tolerant method and device able to recognize connect/disconnect signals - Google Patents
Fault-tolerant method and device able to recognize connect/disconnect signals Download PDFInfo
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- CN1127252C CN1127252C CN 98109560 CN98109560A CN1127252C CN 1127252 C CN1127252 C CN 1127252C CN 98109560 CN98109560 CN 98109560 CN 98109560 A CN98109560 A CN 98109560A CN 1127252 C CN1127252 C CN 1127252C
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Abstract
The present invention relates to a fault-tolerant method and a fault-tolerant device for identifying a connecting/disconnecting signal, which is used for a telephone with a connecting/disconnecting function. The method comprises the actions: a signal line is detected so as to transmit a trigger signal when the time length of the detected signal is in a first specific time period and is in accordance with the specifications of a specific frequency; the telephone is interrupted so as to transmit an externally received sound signal to the signal line, and the signal on the signal line is continuously detected until a second specific time; when the amplitude strength of the signal is larger than a specific value by detection, the telephone is restored so as to transmit the externally received sound signal to the signal line. The device utilizes an amplitude detecting device to execute a reconfirming action so as to increase the identification rate of the connecting/disconnecting signal.
Description
Technical field
The present invention is a kind of connect/disconnect signal identification fault-tolerance approach and device, especially refer to be applied to utilize an amplitude arrangement for detecting to carry out to confirm action again and again on the tool plug functional telephone machine, to reach the connect/disconnect signal identification fault-tolerance approach and the device of the discrimination power that improves connect/disconnect signal.
Background technology
See also shown in Figure 1, connection diagram for telephone set and switch end, when first phone and second phone are conversed, and third phone is also desired to be allocated to the first phone and is conversed, the switch end will send a connect/disconnect signal to the first phone this moment, in the present domestic practice, its connect/disconnect signal is a voice signal, the user who uses notice first phone has the third party's phone to desire to converse, and the user can use function button (normally Flash key) on the keyboard to carry out switching with the second phone or the third telephone booth talking state.But this voice signal that continues can have a strong impact on the communication quality of original first, second telephone booth, and the user at first, second phone two ends also is difficult for its connect/disconnect signal of person why of identification, causes sizable puzzlement.
Connect/disconnect signal in the comparatively advanced country (as the U.S.) of telecommunications industry is then adopted the different practices, the connect/disconnect signal that this switch end is sent is a signal that meets special time length and frequency specification (the 2130HZ/2750HZ complex tone of time span 80ms (millisecond) is a signal frequently), because this signal amplitude intensity is little, be difficult for being discovered, so do not influence the communication quality of original first, second telephone booth by the user.Audio signal detector 11 (Tone Detector) (the function block schematic diagram sees also second figure) after detecting this connect/disconnect signal on the holding wire 10 when first phone institute tool, touch microcontroller 12 interrupts the action that this first telephone set will be sent to this holding wire from the voice signal that the external world is received and reach a special time (being set at 1 second usually) at once, meaning is that the voice signal that microphone received of first phone will stop to be sent to and reach 1 second on the holding wire, this moment, the switch end also made the voice signal of second telephone set can not deliver on the first telephone signal line in 1 second, thus, to no longer include any external sound in this 1 second delivers on this holding wire, the telephone number (utilizing the Hou section time in this second to transmit usually) that the switch end then utilizes this time of 1 second to transmit third phone shows to the display screen 13 of first phone institute tool, the third party's phone plug is arranged with the user who reminds the first phone, and the conversation of first phone and second telephone booth recovered after 1 second, this moment, first phone and second phone still can continue conversation, and its communication quality will no longer be subjected to the interference of connect/disconnect signal, and the user of first phone also can be by telephone number shown on the display screen 13, judge whether to interrupt to switch to third phone and converse, also have a function of screening phone with the conversation of second phone.
And owing to produce phenomenons such as decay or adding noise after the transmission of holding wire of the connect/disconnect signal that above-mentioned switch end sent process most probably, make the connect/disconnect signal of original transmission be out of shape to some extent, (the i.e. first special time section so must be interval with specification error tolerance, be generally 30ms to 90ms) specification of its connect/disconnect signal is compared, because if strictness is compared with time span 80ms, then accurately acceptance rate will significantly be reduced to insufferable stage, but relatively, tolerate when error and intervally will cause the probability of misoperation to heighten again when excessive, modal situation is in the background sound of the voice signal that sent of second phone user or its second phone position, just have and meet the interval audio signal of this specification error tolerance (complex tone of 2130HZ/2750HZ is signal frequently), the audio signal detector 11 (Tone Detector) of first phone institute tool will be judged by accident to there being connect/disconnect signal to come in to touch microcontroller 12 and be produced a succession of misoperation this moment, as the sound interruption that produced for 1 second perplexs user's action with the signal (but actual signal transmission that there is no the telephone number of represent third party) of preparing to receive the telephone number of represent third party etc.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of connect/disconnect signal identification fault-tolerance approach and device thereof are provided, it is distinguishable judges voice signal that the signal that receives is correspondent phone user or for the background sound of position etc., still the real connect/disconnect signal that is sent by the switch end is to reach the discrimination power that improves connect/disconnect signal.
The objective of the invention is to be achieved through the following technical solutions:
A kind of connect/disconnect signal identification fault-tolerance approach, be applied on the telephone set of a tool plug function, this telephone set is electrically connected with the switch end by a holding wire, its step comprises: (a) detect this holding wire, when the time span of detecting signal is positioned at one first special time section is 30ms-90ms and to meet a characteristic frequency specification be the complex tone of 2130/2750Hz frequently during signal, sends a triggering signal; (b) respond this triggering signal and interrupt this telephone set and will be sent to the action of this holding wire, and continuing signal on this holding wire of detecting, to reach one second special time be 10ms from the extraneous voice signal that is received; And (c) when in this second special time, detecting signal amplitude intensity on this holding wire, recover the action that this telephone set is sent to the voice signal that the external world received this holding wire greater than a particular value; When if the signal amplitude intensity in this second special time on detected this holding wire is not more than this particular value, this telephone set will respond the action of plug signal.
Another aspect of the invention is the fault-tolerant device of a kind of connect/disconnect signal identification, be applied on the telephone set of a tool plug function, this telephone set is electrically connected with the switch end by a holding wire, its device for identifying comprises: an audio signal detector, be electrically connected on this holding wire, in order to detect this holding wire, when the time span of the signal that is detected is positioned at one first special time section is 30ms-90ms and to meet a characteristic frequency specification be the complex tone of 2130/2750Hz frequently during signal, sends a triggering signal; One microcontroller is electrically connected on this audio signal detector, and it is to interrupt this telephone set will be sent to the action of this holding wire from the extraneous voice signal that is received in response to the triggering of this triggering signal, and sends and determine signal again and again; One amplitude arrangement for detecting, be electrically connected on this holding wire and this microcontroller, it is to determine the triggering of signal again and continue signal on this holding wire of detecting to reach one second special time be 10ms in response to this, when in this second special time, detecting signal amplitude intensity on this holding wire greater than a particular value, send a restoring signal, recover the action that this telephone set is sent to the voice signal that the external world received this holding wire in order to trigger this microcontroller.
Owing to adopt above technical scheme, utilize an amplitude arrangement for detecting to carry out and confirm action again and again, can judge voice signal that the signal that receives is correspondent phone user or background sound of position etc., still the real connect/disconnect signal that is sent by the switch end, so just, can avoid false touch microcontroller 12 to produce a succession of misoperation, thoroughly improve the disappearance of the means of commonly using.
Description of drawings
Fig. 1 is the connection diagram of three telephone sets and switch end;
Fig. 2 commonly uses the function block schematic diagram of tool plug functional telephone machine;
The function block schematic diagram of Fig. 3 preferred embodiment of the present invention.
The present invention is described in detail below by drawings and Examples: see also Fig. 3, be the function block schematic diagram of preferred embodiment of the present invention, be made up of audio signal detector 21, amplitude arrangement for detecting 22, microcontroller 23.With three phone frameworks shown in Figure 1 is the explanation that example is done a technological means.The time span that detects a signal when the audio signal detector 21 (Tone Detector) of first phone institute tool on holding wire 20 meets interval (the i.e. first special time section of this specification error tolerance, be generally 30ms to 90ms) after, send a triggering signal and touch microcontroller 23 at once, interrupt this first telephone set and will be sent to the action (voice signal that microphone received that is the first phone will stop to be sent on the holding wire) of this holding wire, and sending again and again definite signal to amplitude arrangement for detecting 22 from the extraneous voice signal that is received.And amplitude arrangement for detecting 22 is determined the triggering of signal again in response to this and the signal that continues on this holding wire of detecting reaches one second special time (being approximately 10ms), whether is about to received its oscillator intensity of signal amplification detection of this 10ms greater than a particular value.Because when really intercutting signal by switch end transmission one, the switch end also makes the voice signal of second telephone set can not deliver on the first telephone signal line in this special time (being generally 1 second), in order to avoid disturb the transmission of the telephone number signal of third phone therebetween.So if really be when intercutting signal by switch end transmission one, amplitude arrangement for detecting 22 received signal between this 10ms will level off to zero, can't be greater than default particular value, just be judged as real connect/disconnect signal this moment, proceeds the follow-up actions such as transmission that wait the telephone number of third phone.But if the signal that makes audio signal detector 21 send triggering signal is the voice signal that second phone user is sent, or the background sound of its second phone position etc. is not the connect/disconnect signal that is really sent by the switch end, and this moment the second telephone set the voice signal action of delivering to first telephone signal line can't be interrupted.So amplitude arrangement for detecting 22 is after signal received between this 10ms is exaggerated detection, its oscillator intensity is inevitable greater than this particular value.This moment, the amplitude arrangement for detecting 22 just sent a restoring signal, triggered this microcontroller and recovered this telephone set the voice signal that the external world received is sent to the action of this holding wire, stopped to prepare to receive the action of the telephone number signal of representing the third party.So avoid false touch microcontroller 12 to produce a succession of misoperation, thoroughly improve the deficiency of the means of commonly using.
Claims (2)
1. a connect/disconnect signal identification fault-tolerance approach is applied on the telephone set of a tool plug function, and this telephone set is electrically connected with the switch end by a holding wire, it is characterized in that its step comprises:
(a) detecting this holding wire, is 30ms-90ms and to meet a characteristic frequency specification be the complex tone of 2130/2750Hz frequently during signal when the time span of detecting signal is positioned at one first special time section, sends a triggering signal;
(b) respond this triggering signal and interrupt this telephone set and will be sent to the action of this holding wire, and continuing signal on this holding wire of detecting, to reach one second special time be 10ms from the extraneous voice signal that is received; And
When (c) in this second special time, detecting signal amplitude intensity on this holding wire, recover the action that this telephone set is sent to the voice signal that the external world received this holding wire greater than a particular value; When if the signal amplitude intensity in this second special time on detected this holding wire is not more than this particular value, this telephone set will respond the action of plug signal.
2. the fault-tolerant device of connect/disconnect signal identification is applied on the telephone set of a tool plug function, and this telephone set is electrically connected with the switch end by a holding wire, it is characterized in that described device for identifying comprises:
One audio signal detector, be electrically connected on this holding wire, in order to detecting this holding wire, be the complex tone of 2130/2750Hz frequently during signal when the time span of the signal that is detected is positioned at one first special time section 30ms-90ms and meets a characteristic frequency specification, send a triggering signal;
One microcontroller is electrically connected on this audio signal detector, responds the triggering of this triggering signal and interrupts this telephone set and will be sent to the action of this holding wire from the extraneous voice signal that is received, and send and determine signal again and again;
One amplitude arrangement for detecting, be electrically connected on this holding wire and this microcontroller, respond this triggering of determining signal again and continue signal on this holding wire of detecting to reach one second special time be 10ms, when in this second special time, detecting signal amplitude intensity on this holding wire greater than a particular value, send a restoring signal, recover the action that this telephone set is sent to the voice signal that the external world received this holding wire in order to trigger this microcontroller, when the signal amplitude intensity on detected this holding wire in this second special time is not more than this particular value, this telephone set will respond the action of plug signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98109560 CN1127252C (en) | 1998-06-05 | 1998-06-05 | Fault-tolerant method and device able to recognize connect/disconnect signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98109560 CN1127252C (en) | 1998-06-05 | 1998-06-05 | Fault-tolerant method and device able to recognize connect/disconnect signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1238634A CN1238634A (en) | 1999-12-15 |
| CN1127252C true CN1127252C (en) | 2003-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98109560 Expired - Fee Related CN1127252C (en) | 1998-06-05 | 1998-06-05 | Fault-tolerant method and device able to recognize connect/disconnect signals |
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| Country | Link |
|---|---|
| CN (1) | CN1127252C (en) |
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1998
- 1998-06-05 CN CN 98109560 patent/CN1127252C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1238634A (en) | 1999-12-15 |
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