CN202841125U - Carrier communication control module - Google Patents
Carrier communication control module Download PDFInfo
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- CN202841125U CN202841125U CN 201220354447 CN201220354447U CN202841125U CN 202841125 U CN202841125 U CN 202841125U CN 201220354447 CN201220354447 CN 201220354447 CN 201220354447 U CN201220354447 U CN 201220354447U CN 202841125 U CN202841125 U CN 202841125U
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Abstract
Disclosed in the utility model is a carrier communication control module that comprises a power supply unit, a signal unit and a voice unit. Specifically, the power supply unit, which is used for completing supply of an intrinsic safe power supply of a controller itself and voice signal collection, includes an intrinsic safe circuit and a signal detection circuit; the signal unit, which is used for completing sending and receiving of a carrier signal and amplifying and storing a frequency modulated signal sent by the opposite side, includes a carrier modulation and demodulation circuit, a key switch and signal display circuit, a signal receiving circuit, a ringing generation circuit, and a microphone preamplifier and power amplifier output circuit; and the voice unit, which is used for completing alarm signal prompting inputted by at the scene and transmitting the signal to other communication control modules, includes a voice control and voice prompt tone generation circuit. Besides, the power supply unit, the signal unit and the voice unit are in signal connection; and after the combination, the voice intercom, ringing signal generation and voice prompting functions can be realized. Therefore, the provided carrier communication control module has the ringing, voice intercom and voice signal prompting functions.
Description
Technical field
The utility model relates to a kind of carrier communication control module.
Background technology
For a long time, many carrier wave products are very single some function of realization all, and industrial enterprise are badly in need of wanting a kind of installation simple, and communication products easy to maintenance are served production.Such as in ground factories and miness and family, available lighting circuit is realized the effects such as intercommunication, and anti-thefting monitoring that communicate with each other between family.By voltage transmission, voice are must recognize phase by causing when the wiring of down-hole of carrier transmission, otherwise burn circuit, cause damage to enterprise at underground rails of coal mine hoisting gear sending dotter signal.In addition, according to the relevant inaccurate pedestrian that drives of safety regulations in coal mine, the inaccurate regulation of driving of pedestrian, winch also will possess " inaccurate pedestrian drives " voice suggestion and prevent wounded pedestrian after starting, and to realize this function, and needing to cover in addition specially cable, the configure dedicated voice prompting can again.Our product of exploitation is with voice suggestion now, and conversation and sending dotter signal are finished above-mentioned functions in one on the basis that does not increase circuit, have simplified bulking block, have enriched product function, have reduced cost of manufacture, for enterprise brings remarkable benefit.
Summary of the invention
The technical problems to be solved in the utility model provides a kind ofly has ring, voice call to the carrier communication control module of the voice signal prompt facility of making peace.
The technical scheme in the invention for solving the technical problem is:
Communication control module is comprised of power unit, signal section and phonological component, wherein:
Power unit is used for finishing the supply of the intrinsic safety electric source of controller own and the collection of voice signal, comprises intrinsically safe circuit and signal deteching circuit;
Signal section is used for finishing the carrier signal sending and receiving, and amplifies the FM signal that reduction the other side sends, and comprises the carrier modulation demodulator circuit, and button switches and signal display circuit, signal receiving circuit, and ring produces circuit, the preposition and power amplifier output circuit of microphone;
Phonological component is used for finishing the alarm signal prompting of on-the-spot input and this signal is delivered to other communication control module, comprises that voice control and voice suggestion sound produce circuit;
Signal connects between power unit, signal section and the phonological component, has speech talkback after the combination, sends bell signal and sound prompt function.
Described intrinsically safe circuit is at power panel a power transformer to be installed, be used for converting power supply to 15 volts of DC power supply, through passing through integrated voltage stabilizer IC1 behind full-bridge rectification and the capacitor filtering, integrated voltage stabilizer IC2 two level current limiting and three sections integrated regulator IC chip IC 3,4 voltage stabilizings of three-terminal voltage-stabilizing ic chip, export 9 volts of direct currents, for communication control module work, circuit for checking input signals is the acquisition and processing of finishing controller signals, and this part circuit is to drive photoelectrical coupler IC5 action by rectifying and voltage-stabilizing after the control voltage signal process capacitance-resistance pressure drop of YYR and 0V input to send on-the-spot actuating signal to signal section.
Described carrier modulation demodulator circuit, it is to finish signal solution that the other side sends to be in harmonious proportion to the circuit of the modulation function of the other side's transmitted signal, its function realizes making 5 of integrated voltage stabilizer IC2,6 pin produce the 200KZ carrier frequency by diode D2, capacitor C 1, resistance R 4, triode BG1, inductance L 1, Dual-power switch controller T1, inductance L 2, inductance L 3, capacitor C 10, capacitor C 11 sends the carrier signal of modulation to interface J4, and the modulation signal that the other side can also be sent simultaneously is through interface J4, capacitor C 11, capacitor C 10, inductance L 2, inductance L 3, Dual-power switch controller T1, resistance R 7, capacitor C 7, capacitor C 9 settling signals receive, and signal passes through capacitor C 17 after receiving circuit amplifies output, capacitor C 16, resistance R 10, demodulation is carried out in the input of the 3rd pin of photoelectrical coupler IC5, and 2 pin of the signal after the demodulation by integrated voltage stabilizer IC2 are reduced into voice signal and send the power amplifier output circuit to promote loudspeaker to sound.
Button switches and signal display circuit is to finish input key information mutual linking and control, acousto-optic Presentation Function in the voice suggestion process, it mainly finishes this part control by photoelectrical coupler IC5 and integrated voltage stabilizer IC1,4 pin of oscillator IC1B output high level is controlled triode BG3 conductings through resistance R 3 through resistance R 27 when pressing press-to-talk switch, diode D1, and one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, lead up to diode D3, resistance R 31, triode BG5 shows to LED; When pressing call button, 6 pin of oscillator IC1C output high level is through resistance R 28, triode BG4, and conducting is through diode D12, and one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, leads up to diode D3, resistance R 31, triode BG5 shows to LED; Starting signal detects the one tunnel 8 pin output high level through oscillator IC1, through resistance R 42, triode BG6, carrying out voice output for phonological component Power supply and control photoelectrical coupler IC5 switches, high level is exported through diode D15 through 10 pin of IC1E in another road, resistance R 31, triode BG5 shows to LED; Receive the 2 pin output high level of IC1A behind the signal through diode D4, resistance R 31, triode BG5 shows to LED.
Described signal receiving circuit, finish by three sections integrated regulator IC chip IC 3, when input signal also amplifies signal by 3,4,5,6 pin and peripheral resistance R 14, capacitor C 20, the resistance R 11 of three sections integrated regulator IC chip IC 3 by the 3rd pin that capacitor C 9 is coupled to three sections integrated regulator IC chip IC 3, deliver to modulation-demodulation circuit by capacitor C 16, resistance R 10 and carry out demodulation, finish receiving the signal amplification.
Described ring produces circuit, finish by integrated circuit (IC) 3,1,2,13,12,11,10,9,8 pin of integrated circuit (IC) 3 and peripheral resistance R 15, capacitor C 22, resistance R 13, resistance R 12, capacitor C 19, consist of oscillating circuit, produce dual-audio from the 8th pin output of three sections integrated regulator IC chip IC 3, send commutation circuit and power amplifier, produce bell signal.
Described microphone front end circuit, be the circuit that will send the language tone signal to convert the signal of telecommunication to, when sound is inputted from MIC, by capacitor C 28, deliver to triode BG7, triode BG2 and peripheral cell capacitor C 30, resistance R 18, resistance R 20, capacitor C 34, resistance R 39, resistance R 40, capacitor C 40 forms the microphone signal pre-amplification circuit, and the signal after the amplification is by capacitor C 37, and resistance R 24 sends on the power line after sending the carrier modulation demodulator circuit with the signal modulation.
Described power amplifier output circuit, that Control on Communication promotes the circuit that loudspeaker are sounded, after the voice signal that receives the other side or bell signal and the bell signal process commutation circuit settling signal switching that produces own, deliver to the 3rd pin input of power amplifier piece IC4 and pass through peripheral cell capacitor C 29, resistance R 19, capacitor C 31, capacitor C 32, capacitor C 27, settling signal is processed, and the voice signal after the processing is sounded by the 5th pin output promotion loudspeaker SP of power amplifier piece IC4.
Phonological component is the circuit that produces voice suggestion sound, when carrying out the voice reporting words, signal plate powers to voice plate VCC1 first, power to single-chip microcomputer IC1 by the V1 voltage stabilizing, power to cd-rom recorder IC2 by the V2 voltage stabilizing again, 7 pin of single-chip microcomputer IC1 and resistance R 5 triode BG1 are the circuit at control voice broadcast interval, 2 pin of single-chip microcomputer IC1,3 pin are that control cd-rom recorder IC2 reports voice content, and the voice signal that cd-rom recorder IC2 produces is finished voice suggestion output by its 6 pin, resistance R 9, capacitor C 7 number of delivering letters circuit.
The beneficial effects of the utility model are:
Because the utility model is used for the ground factories and miness and family is wired to communicate with each other between realization family on the lighting circuit intercommunication and anti-thefting monitoring effect.Be used for not needing to cover in addition cable under the coal mine, do not need the configure dedicated voice prompting just can realize voice suggestion again, conversation and sending dotter signal are in the function of one, simplified bulking block, enriched product function, reduced cost of manufacture, for enterprise brings remarkable benefit.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model;
Fig. 2 is intrinsically safe circuit schematic diagram of the present utility model;
Fig. 3 is Speech signal detection circuit theory diagrams of the present utility model;
Fig. 4 is carrier modulation demodulator circuit schematic diagram of the present utility model;
Fig. 5 is that button of the present utility model switches and the signal indicating circuit schematic diagram;
Fig. 6 is signal receiving circuit schematic diagram of the present utility model;
Fig. 7 is that the tinkle of bells of the present utility model produces circuit theory diagrams;
Fig. 8 is microphone front end circuit schematic diagram of the present utility model;
Fig. 9 is power amplifier output circuit schematic diagram of the present utility model;
Figure 10 is voice control of the present utility model and prompt tone generative circuit schematic diagram.
Embodiment
As shown in the figure, the carrier communication control module is comprised of power unit, signal section and phonological component, wherein:
Power unit is used for finishing the supply of the intrinsic safety electric source of controller own and the collection of voice signal, comprises intrinsically safe circuit and signal deteching circuit;
Signal section is used for finishing the carrier signal sending and receiving, and amplifies the FM signal that reduction the other side sends, and comprises the carrier modulation demodulator circuit, and button switches and signal display circuit, signal receiving circuit, and ring produces circuit, the preposition and power amplifier output circuit of microphone;
Phonological component is used for finishing the alarm signal prompting of on-the-spot input and this signal is delivered to other communication control module, comprises that voice control and voice suggestion sound produce circuit;
Signal connects between power unit, signal section and the phonological component, has speech talkback after the combination, sends bell signal and sound prompt function.
Intrinsically safe circuit is at power panel a power transformer to be installed, be used for converting power supply to 15 volts of DC power supply, through passing through integrated voltage stabilizer IC1 behind full-bridge rectification and the capacitor filtering, integrated voltage stabilizer IC2 two level current limiting and three sections integrated regulator IC chip IC 3,4 voltage stabilizings of three-terminal voltage-stabilizing ic chip, export 9 volts of direct currents, for communication control module work, circuit for checking input signals is the acquisition and processing of finishing controller signals, and this part circuit is to drive photoelectrical coupler IC5 action by rectifying and voltage-stabilizing after the control voltage signal process capacitance-resistance pressure drop of YYR and 0V input to send on-the-spot actuating signal to signal section.
The carrier modulation demodulator circuit, it is to finish signal solution that the other side sends to be in harmonious proportion to the circuit of the modulation function of the other side's transmitted signal, its function realizes making 5 of integrated voltage stabilizer IC2,6 pin produce the 200KZ carrier frequency by diode D2, capacitor C 1, resistance R 4, triode BG1, inductance L 1, Dual-power switch controller T1, inductance L 2, inductance L 3, capacitor C 10, capacitor C 11 sends the carrier signal of modulation to interface J4, and the modulation signal that the other side can also be sent simultaneously is through interface J4, capacitor C 11, capacitor C 10, inductance L 2, inductance L 3, Dual-power switch controller T1, resistance R 7, capacitor C 7, capacitor C 9 settling signals receive, and signal passes through capacitor C 17 after receiving circuit amplifies output, capacitor C 16, resistance R 10, demodulation is carried out in the input of the 3rd pin of photoelectrical coupler IC5, and 2 pin of the signal after the demodulation by integrated voltage stabilizer IC2 are reduced into voice signal and send the power amplifier output circuit to promote loudspeaker to sound.
Button switches and signal display circuit is to finish input key information mutual linking and control, acousto-optic Presentation Function in the voice suggestion process, it mainly finishes this part control by photoelectrical coupler IC5 and integrated voltage stabilizer IC1,4 pin of oscillator IC1B output high level is controlled triode BG3 conductings through resistance R 3 through resistance R 27 when pressing press-to-talk switch, diode D1, and one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, lead up to diode D3, resistance R 31, triode BG5 shows to LED; When pressing call button, 6 pin of oscillator IC1C output high level is through resistance R 28, triode BG4, and conducting is through diode D12, and one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, leads up to diode D3, resistance R 31, triode BG5 shows to LED; Starting signal detects the one tunnel 8 pin output high level through oscillator IC1, through resistance R 42, triode BG6, carrying out voice output for phonological component Power supply and control photoelectrical coupler IC5 switches, high level is exported through diode D15 through 10 pin of IC1E in another road, resistance R 31, triode BG5 shows to LED; Receive the 2 pin output high level of IC1A behind the signal through diode D4, resistance R 31, triode BG5 shows to LED.
Signal receiving circuit, finish by three sections integrated regulator IC chip IC 3, when input signal also amplifies signal by 3,4,5,6 pin and peripheral resistance R 14, capacitor C 20, the resistance R 11 of three sections integrated regulator IC chip IC 3 by the 3rd pin that capacitor C 9 is coupled to three sections integrated regulator IC chip IC 3, deliver to modulation-demodulation circuit by capacitor C 16, resistance R 10 and carry out demodulation, finish receiving the signal amplification.
Ring produces circuit, finish by integrated circuit (IC) 3,1,2,13,12,11,10,9,8 pin of integrated circuit (IC) 3 and peripheral resistance R 15, capacitor C 22, resistance R 13, resistance R 12, capacitor C 19, consist of oscillating circuit, produce dual-audio from the 8th pin output of three sections integrated regulator IC chip IC 3, send commutation circuit and power amplifier, produce bell signal.
The microphone front end circuit, be the circuit that will send the language tone signal to convert the signal of telecommunication to, when sound is inputted from MIC, by capacitor C 28, deliver to triode BG7, triode BG2 and peripheral cell capacitor C 30, resistance R 18, resistance R 20, capacitor C 34, resistance R 39, resistance R 40, capacitor C 40 forms the microphone signal pre-amplification circuit, and the signal after the amplification is by capacitor C 37, and resistance R 24 sends on the power line after sending the carrier modulation demodulator circuit with the signal modulation.
The power amplifier output circuit, that Control on Communication promotes the circuit that loudspeaker are sounded, after the voice signal that receives the other side or bell signal and the bell signal process commutation circuit settling signal switching that produces own, deliver to the 3rd pin input of power amplifier piece IC4 and pass through peripheral cell capacitor C 29, resistance R 19, capacitor C 31, capacitor C 32, capacitor C 27, settling signal is processed, and the voice signal after the processing is sounded by the 5th pin output promotion loudspeaker SP of power amplifier piece IC4.
Phonological component is the circuit that produces voice suggestion sound, when carrying out the voice reporting words, signal plate powers to voice plate VCC1 first, power to single-chip microcomputer IC1 by the V1 voltage stabilizing, power to cd-rom recorder IC2 by the V2 voltage stabilizing again, 7 pin of single-chip microcomputer IC1 and resistance R 5 triode BG1 are the circuit at control voice broadcast interval, 2 pin of single-chip microcomputer IC1,3 pin are that control cd-rom recorder IC2 reports voice content, and the voice signal that cd-rom recorder IC2 produces is finished voice suggestion output by its 6 pin, resistance R 9, capacitor C 7 number of delivering letters circuit.
Claims (9)
1. communication control module is comprised of power unit, signal section and phonological component, wherein:
Power unit is used for finishing the supply of the intrinsic safety electric source of controller own and the collection of voice signal, comprises intrinsically safe circuit and signal deteching circuit;
Signal section is used for finishing the carrier signal sending and receiving, and amplifies the FM signal that reduction the other side sends, and comprises the carrier modulation demodulator circuit, and button switches and signal display circuit, signal receiving circuit, and ring produces circuit, the preposition and power amplifier output circuit of microphone;
Phonological component is used for finishing the alarm signal prompting of on-the-spot input and this signal is delivered to other communication control module, comprises that voice control and voice suggestion sound produce circuit;
It is characterized in that:
Signal connects between power unit, signal section and the phonological component, has speech talkback after the combination, sends bell signal and sound prompt function.
2. according to communication control module claimed in claim 1, it is characterized in that: intrinsically safe circuit is at power panel a power transformer to be installed, be used for converting power supply to 15 volts of DC power supply, through passing through integrated voltage stabilizer IC1 behind full-bridge rectification and the capacitor filtering, integrated voltage stabilizer IC2 two level current limiting and three sections integrated regulator IC chip IC 3,4 voltage stabilizings of three-terminal voltage-stabilizing ic chip, export 9 volts of direct currents, for communication control module work, circuit for checking input signals is the acquisition and processing of finishing controller signals, and this part circuit is to drive photoelectrical coupler IC5 action by rectifying and voltage-stabilizing after the control voltage signal process capacitance-resistance pressure drop of YYR and 0V input to send on-the-spot actuating signal to signal section.
3. according to communication control module claimed in claim 1, it is characterized in that: the carrier modulation demodulator circuit, it is to finish signal solution that the other side sends to be in harmonious proportion to the circuit of the modulation function of the other side's transmitted signal, and its function realizes making 5 of integrated voltage stabilizer IC2,6 pin produce the 200KZ carrier frequency by diode D2, capacitor C 1, resistance R 4, triode BG1, inductance L 1, Dual-power switch controller T1, inductance L 2, inductance L 3, capacitor C 10, capacitor C 11 sends the carrier signal of modulation to interface J4, the modulation signal that the other side can also be sent simultaneously is through interface J4, capacitor C 11, capacitor C 10, inductance L 2, inductance L 3, Dual-power switch controller T1, resistance R 7, capacitor C 7, capacitor C 9 settling signals receive, signal passes through capacitor C 17, capacitor C 16, resistance R 10 after receiving circuit amplifies output, demodulation is carried out in the input of the 3rd pin of photoelectrical coupler IC5, and 2 pin of the signal after the demodulation by integrated voltage stabilizer IC2 are reduced into voice signal and send the power amplifier output circuit to promote loudspeaker to sound.
4. according to communication control module claimed in claim 1, it is characterized in that: button switches and signal display circuit is to finish input key information mutual linking and control, acousto-optic Presentation Function in the voice suggestion process, it mainly finishes this part control by photoelectrical coupler IC5 and integrated voltage stabilizer IC1,4 pin of oscillator IC1B output high level is controlled triode BG3 conductings through resistance R 3 through resistance R 27 when pressing press-to-talk switch, diode D1, one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, lead up to diode D3, resistance R 31, triode BG5 shows to LED; When pressing call button, 6 pin of oscillator IC1C output high level is through resistance R 28, triode BG4, and conducting is through diode D12, and one tunnel resistance R 3 send the transmission power supply for the modulation transtation mission circuit, leads up to diode D3, resistance R 31, triode BG5 shows to LED; Starting signal detects the one tunnel 8 pin output high level through oscillator IC1, through resistance R 42, triode BG6, carrying out voice output for phonological component Power supply and control photoelectrical coupler IC5 switches, high level is exported through diode D15 through 10 pin of IC1E in another road, resistance R 31, triode BG5 shows to LED; Receive the 2 pin output high level of IC1A behind the signal through diode D4, resistance R 31, triode BG5 shows to LED.
5. according to communication control module claimed in claim 1, it is characterized in that: signal receiving circuit, finish by three sections integrated regulator IC chip IC 3, when input signal also amplifies signal by 3,4,5,6 pin and peripheral resistance R 14, capacitor C 20, the resistance R 11 of three sections integrated regulator IC chip IC 3 by the 3rd pin that capacitor C 9 is coupled to three sections integrated regulator IC chip IC 3, deliver to modulation-demodulation circuit by capacitor C 16, resistance R 10 and carry out demodulation, finish receiving the signal amplification.
6. according to communication control module claimed in claim 1, it is characterized in that: ring produces circuit, finish by integrated circuit (IC) 3,1,2,13,12,11,10,9,8 pin of integrated circuit (IC) 3 and peripheral resistance R 15, capacitor C 22, resistance R 13, resistance R 12, capacitor C 19, consist of oscillating circuit, produce dual-audio from the 8th pin output of three sections integrated regulator IC chip IC 3, send commutation circuit and power amplifier, produce bell signal.
7. according to communication control module claimed in claim 1, it is characterized in that: the microphone front end circuit, to send the language tone signal to convert the circuit of the signal of telecommunication to, when inputting from MIC, passes through sound capacitor C 28, deliver to triode BG7, triode BG2 and peripheral cell capacitor C 30, resistance R 18, resistance R 20, capacitor C 34, resistance R 39, resistance R 40, capacitor C 40 forms the microphone signal pre-amplification circuit, signal after the amplification is by capacitor C 37, and resistance R 24 sends on the power line after sending the carrier modulation demodulator circuit with the signal modulation.
8. according to communication control module claimed in claim 1, it is characterized in that: the power amplifier output circuit, that Control on Communication promotes the circuit that loudspeaker are sounded, after the voice signal that receives the other side or bell signal and the bell signal process commutation circuit settling signal switching that produces own, deliver to the 3rd pin input of power amplifier piece IC4 and pass through peripheral cell capacitor C 29, resistance R 19, capacitor C 31, capacitor C 32, capacitor C 27, settling signal is processed, and the voice signal after the processing is sounded by the 5th pin output promotion loudspeaker SP of power amplifier piece IC4.
9. according to communication control module claimed in claim 1, it is characterized in that: phonological component is the circuit that produces voice suggestion sound, when carrying out the voice reporting words, signal plate powers to voice plate VCC1 first, power to single-chip microcomputer IC1 by the V1 voltage stabilizing, power to cd-rom recorder IC2 by the V2 voltage stabilizing again, 7 pin of single-chip microcomputer IC1 and resistance R 5 triode BG1 are the circuit at control voice broadcast interval, 2 pin of single-chip microcomputer IC1,3 pin are that control cd-rom recorder IC2 reports voice content, and the voice signal that cd-rom recorder IC2 produces is by its 6 pin, resistance R 9, capacitor C 7 number of delivering letters circuit are finished voice suggestion output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354447 CN202841125U (en) | 2012-07-21 | 2012-07-21 | Carrier communication control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220354447 CN202841125U (en) | 2012-07-21 | 2012-07-21 | Carrier communication control module |
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| Publication Number | Publication Date |
|---|---|
| CN202841125U true CN202841125U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220354447 Expired - Fee Related CN202841125U (en) | 2012-07-21 | 2012-07-21 | Carrier communication control module |
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| CN (1) | CN202841125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301665A (en) * | 2013-07-08 | 2015-01-21 | 弗马克斯设计和开发公司 | Two-wire multichannel video door system |
-
2012
- 2012-07-21 CN CN 201220354447 patent/CN202841125U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301665A (en) * | 2013-07-08 | 2015-01-21 | 弗马克斯设计和开发公司 | Two-wire multichannel video door system |
| CN104301665B (en) * | 2013-07-08 | 2019-04-09 | 弗马克斯设计和开发公司 | Two-wire multi-channel video gate system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20140721 |
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| EXPY | Termination of patent right or utility model |