CN2867296Y - Wireless screen displaying speech prompting vehicle-reversing indicator - Google Patents
Wireless screen displaying speech prompting vehicle-reversing indicator Download PDFInfo
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- CN2867296Y CN2867296Y CN 200520060919 CN200520060919U CN2867296Y CN 2867296 Y CN2867296 Y CN 2867296Y CN 200520060919 CN200520060919 CN 200520060919 CN 200520060919 U CN200520060919 U CN 200520060919U CN 2867296 Y CN2867296 Y CN 2867296Y
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Abstract
The utility model belongs to the field of vehicle signal equipment and specifically relates to a wireless-display language-warning reverse indicator. It comprises a transmitting module and a receiving module. The transmitting module consists of ultrasonic transmission circuit, ultrasonic reception signal circuit, power supply circuit, signal transmitting circuit, and single-chip microcomputer. The receiving module consists of power supply circuit, signal receiving circuit, camera, video circuit, voice circuit, display screen, and single-chip microcomputer. It has simple structure, convenient installation, and performances of wireless transmission and reception, and can provide drivers with audio and visual indications for reverse by the multi-function wireless-display language orientation display.
Description
Technical field
The utility model wireless screen display language prompting reversing indicator belongs to signals of vehicles device field, particularly relates to a kind of vehicle backing indicator.
Background technology
For a long time, the reversing automobile backsight is bad to be driver's a great problem always, particularly abominable in climatic environment, under the narrow and small situation of parking spot, collision appears easily, existing a kind of reversing alarm set, the detection principle that it utilizes ultrasonic emitting to receive when reversing automobile, has hummer prompting sounding, charactron shows the distance of barrier, but can not specifically know the situation of the tailstock and the orientation of tailstock barrier in detail, size and shape, and the another kind of backing device that camera is housed, the driver can recognize the situation of the tailstock, but can not accurately know the distance of barrier, there is the dead angle in camera simultaneously.Above backing device all is one-side driver assistance person's reversing.During reversing, the driver will visually judge between a moment in the distance of automobile tail and barrier, judges orientation, the shape of the barrier of automobile tail again, has increased driver's work difficulty.Installing, connecting line will be leaned in signal processing and display part, be connected to car behind the car before, bring difficulty to installation.
The content of utility model
The purpose of this utility model is to avoid the deficiencies in the prior art, and provide a kind of circuit structure simple, easy for installation, realize wireless transmit, receiving function, simultaneously at the multifunction wireless screen display language orientation of vision, driver assistance person's reversing acoustically prompting reversing device indicating.
The purpose of this utility model reaches by following measure, the driver is by being installed in the camera behind the car, situation behind the car that is absorbed, being sent to screen display shows, with the environment behind the understanding car, the distance of the barrier that transmitter module obtains, the orientation, send by wireless signal transmission circuit, receiver module receives distance by signal receiving circuit, bearing signal, stack simultaneously is presented at camera and takes the photograph on the picture, and by the verbal cue circuit, accurately enter for out the orientation and the distance of barrier, security and accuracy thereby the raising driver moves backward.It is made up of transmitter module and receiver module, transmitter module is by ultrasonic transmit circuit, ultrasound wave received signal circuit, power circuit, signal transmission circuit and processor of single chip computer are formed, receiver module is by power circuit, signal receiving circuit, camera, video circuit, sound circuit, display screen and processor of single chip computer are formed.Power circuit is made up of filtering, step-down, mu balanced circuit, obtains 5 volts and 8 volts of tributary voltages respectively, for processor of single chip computer and each circuit provide D.C. regulated power supply.The processor of single chip computer timed sending ultrasonic pulse signal of transmitter module, send to more than one ultrasonic probe the ultrasonic pulse signal cycle assignment through channel selecting, ultrasound wave received signal circuit receives ultrasonic pulse signal and meets the signal that barrier reflects, through operational amplification circuit, transmit signal to processor of single chip computer, processor of single chip computer calculates the signal that receives, compare the distance between each ultrasonic probe and the barrier, draw the nearest distance of barrier and ultrasonic probe, corresponding signal is sent by signal transmission circuit in the orientation.The signal receiving circuit of receiver module receives distance, the bearing signal that transmitter module sends, be input to processor of single chip computer, the signal of camera picked-up picture outputs to screen display by the video superimpose circuit, thus the environment after demonstrating car on the screen display.Processor of single chip computer output corresponding signal shows supercircuit to video, stack demonstrates distance values on full-screen panel, the barrier orientation, the corresponding instruction of processor of single chip computer output simultaneously signal, the control language cue circuit, the loudspeaker of verbal cue drives screen display send alarm sound, remind the driver.
The power circuit of transmitter module of the present utility model is to be imported by automobile storage battery, by diode and inductance, the filtering of electric capacity, step-down, voltage stabilizing, by 8 volts of DC voltage of output behind the integrated package U2, pass through filtering, step-down, the voltage stabilizing of resistance and electric capacity again, by 5 volts of DC voltage of output behind the integrated package U6.
The ultrasonic emitting of transmitter module is to be sent by processor of single chip computer U1 plug-in, triggers integrated package U4 and multidiameter option switch integrated package U3 through two D, and the ultrasonic pulse signal cycle assignment is sent to ultrasonic probe.Each ultrasonic probe links to each other with the integrated package U3 of multidiameter option switch by the ultrasonic probe match circuit, the ultrasonic probe match circuit is made up of transtat and triode, triode links to each other with integrated package U3 by resistance, transtat connects triode and ultrasonic probe, and integrated package U3 connects ultrasonic probe by diode.
The ultrasound wave received signal circuit of transmitter module is to receive ultrasonic pulse signal to run into the electric signal that barrier reflects, integrated package U3 output by multidiameter option switch, amplifier frequency-selecting, amplification and shaping through integrated package U5 and peripheral cell composition are handled, and are input to processor of single chip computer U1.The signal that ultrasonic probe detects is through being input to the integrated package U3 of multidiameter option switch after the filtering of diode, electric signal connects the operational amplification circuit of being made up of integrated package U5 and peripheral resistance, electric capacity from the output pin of the integrated package U3 of multidiameter option switch, signal is through frequency-selecting, the amplification of operational amplification circuit, relatively export square wave in the back with reference voltage, be input to processor of single chip computer.On integrated package U5, connect adjustable resistance, adjust the sensitivity of amplifying circuit by regulating adjustable resistance.
The signal transmission circuit of transmitter module is that the processor of single chip computer by transmitter module sends signal, and constituting frequency through power valve Q7 and electric capacity, inductance, sound table resonator SAW is 433MHz ultrahigh frequency radiating circuit, by tours antenna to aerial emission.The frequency of operation of data transmission module is 433MHZ, employing sound table resonator SAW frequency stabilization, and frequency stability is high, and when environment temperature changed between-25～+ 85 degree, frequently wafing only was the 3ppm/ degree.The frequency stability of sound table resonator SAW is only second to crystal, and general LC oscillator frequency stabilizing degree and consistance are relatively poor, even adopt high-quality trimmer, the frequency that the also very difficult assurance of difference variation and vibration has mixed up can not be offset.
The power circuit of receiver module is by the automobile storage battery input, arrives by diode and inductance, and the filtering of electric capacity, step-down, voltage stabilizing are by 5 volts of DC voltage of output behind the integrated package U13.
The signal receiving circuit of receiver module is made up of integrated package U8 and resistance, inductance, electric capacity.Receive the signal that launches from transmitter module by antenna,, be input to integrated package U8, handle, obtain distance, bearing signal, be input to processor of single chip computer U7 through integrated package U8 through electric capacity.
The video superimpose circuit of receiver module is by integrated package U10, integrated package U12 and peripheral resistance, electric capacity, and inductance, triode are formed.The picture signal that camera is taken the photograph sends distance, the bearing signal of barrier together with single-chip microcomputer, handles by U10 and peripheral circuit, shows on screen display simultaneously.Single-chip microcomputer U7 receives the processing through U10 of the signal in distance, orientation of gained barrier and camera signals, together from U10 output, through C3, Q5, the distance of barrier, orientation stack is presented on the picture that camera takes the photograph.To go field sync signal by the circuit of being made up of integrated package U12 and peripheral resistance, electric capacity and separate, this separation signal is input to U10.
The verbal cue circuit of receiver module is made up of integrated package U11, voice integrated package U9 and peripheral resistance, electric capacity.Processor of single chip computer U7 is according to distance, the orientation of barrier, output corresponding instruction signal is to voice integrated package U9, pass through power discharging integrated block U11 processing and amplifying again, on the loudspeaker of screen display, send the voice of distance values, enter for out simultaneously concrete barrier orientation, and the prompting of BiBi sound is arranged.
When needs were moveed backward, the utility model began energising work, and power circuit offers transmitter module and receiver module provides needed burning voltage.The built-in control program of processor of single chip computer U1 of transmitter module sends the supersonic frequency (s.f.) pulse signal, give each ultrasonic probe through channel selecting with the ultrasonic pulse signal cycle assignment, add supersonic frequency (s.f.) voltage by the ultrasonic probe match circuit to ultrasonic probe, ultrasonic probe sends ultrasound wave, the ultrasound wave that sends is met the barrier reflection, receive through ultrasonic probe, obtain electric signal, electric signal is through the frequency-selecting of operational amplification circuit, amplify, the output square wave carries out numerical value to processor of single chip computer U1 to be handled, each passage of processor of single chip computer U1 scan round, in a circulation, processor of single chip computer U1 handles the square-wave signal that receives, with analog signal conversion is digital signal, with the digital signal write buffer, carry out computing and comparison, draw ultrasonic probe in a circulation and the distance between the barrier, and the distance that compares between each ultrasonic probe and the barrier is big or small, draw minimum distance, processor of single chip computer U1 sends signal according to the signal transmission circuit that azimuth-range issues a signal to module, receiver module receives the signal of distance and bearing, and the stack of this numerical value and orientation is presented at camera takes the photograph on the picture, processor of single chip computer U7 sends signal according to the azimuth-range of barrier and gives the verbal cue circuit, drive the loudspeaker of screen display, send the language alarm sound that conforms to it, remind the driver.
The utility model is formed by transmitting and receiving two big modules, utilize camera and many group ultrasonic probes, camera is installed in automobile tail, the ultrasonic emitting of transmitter module and received signal circuit are provided with a plurality of ultrasonic probes, processor of single chip computer U1 timed sending ultrasonic pulse signal, send to a plurality of ultrasonic probes the ultrasonic pulse signal cycle assignment through channel selecting, a plurality of ultrasonic probes can be separately positioned on front portion, rear portion, and each position of side of automobile.Camera is arranged on automobile rear.
Each functional circuit of the utility model is simple in structure, stable performance, installation and observation are convenient, can be by the situation of full-screen panel display automobile afterbody and the distance and bearing of barrier, enter for the distance and bearing of barrier simultaneously with language, improve the safety of automobile when reversing, can be widely used in various vehicle backings and use.
Description of drawings
Accompanying drawing 1 is a transmitter module electrical block diagram of the present utility model.
Accompanying drawing 4 is transmitter module power circuit principle figure of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Shown in accompanying drawing 1, accompanying drawing 2, it is made up of the utility model transmitter module and receiver module, and transmitter module is by ultrasonic transmit circuit, ultrasound wave received signal circuit, power circuit, signal transmission circuit and processor of single chip computer are formed, and receiver module is by power circuit, signal receiving circuit, camera, video circuit, sound circuit, display screen and processor of single chip computer are formed.Power circuit provides D.C. regulated power supply, the processor of single chip computer timed sending ultrasonic pulse signal of transmitter module, send through ultrasonic transmit circuit, ultrasonic probe receives the signal process ultrasound wave received signal circuit that barrier reflects, obtain signal and input to processor of single chip computer, processor of single chip computer calculates distance between ultrasonic probe and the barrier with the signal that receives, and the distance that compares between each ultrasonic probe and the barrier is big or small, sends the distance and bearing signal by signal transmission circuit.Receiver module receives distance, bearing signal by signal receiving circuit, be input to processor of single chip computer, processor of single chip computer carries out verbal cue according to obstacle distance, orientation output instruction signal to the verbal cue circuit, simultaneously processor of single chip computer is input to the video superimpose circuit with distance values, orientation beacon signal, and the azimuth-range numerical value stack of barrier is presented on the screen display picture that camera takes the photograph.
Shown in accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, the power circuit of transmitter module of the present utility model is to be imported by automobile storage battery, by diode and inductance, the filtering of electric capacity, by 8 volts of tributary voltages of integrated package of pressure-stabilizing U2 (7808) back output, pass through the filtering of resistance and electric capacity again, by 5 volts of tributary voltages of integrated package of pressure-stabilizing U6 (7805) back output.
The ultrasonic transmit circuit of transmitter module of the present utility model is that 6 human hair combing wastes by processor of single chip computer U1 (AT89C2051) go out, through triode Q5, be connected to 13 pin of multidiameter option switch integrated package U3 (4052), one group of ultrasonic probe selecting to open wherein sends ultrasonic pulse signal.The 8 pin output high-low level of processor of single chip computer U1 (AT89C2051), pass through resistance, triode, be connected on the trigger integrated package U4 (MC14013B), integrated package U4 (MC14013B) links to each other with 10,9 pin of multidiameter option switch integrated package U3 (4052), obtain the level configuration of 9,10 pin of integrated package U3 (4052), the channel cycle that realizes multidiameter option switch integrated package U3 is open-minded, ultrasonic pulse signal is distributed to 4 ultrasonic probe J2, J3, J4, J5 in regular turn send.
The ultrasound wave received signal circuit of transmitter module of the present utility model is that ultrasonic probe J2, J3, J4, J5 receive the signal that ultrasonic pulse signal chance barrier reflects, signal is through input multidiameter option switch integrated package U3 (4052) after the filtering of diode, 3 pin output by integrated package U3 (4052), this electric signal is very faint, and be in a mess, handle via operational amplification circuit frequency-selecting, amplification and shaping, input to processor of single chip computer U1.Half voltage by U5B, R14, C2 and 8 volts is formed first order amplifying circuit for 4 volts, and first order amplifying circuit makes signal obtain amplifying, to the time filter low frequency signal.Form second level selective frequency amplifier circuit by U5C, R15, R18, R19, C8, C9, second level selective frequency amplifier circuit amplifies filter frequently with signal, only allows the ultrasonic frequency of 40KHZ to pass through, the electric signal that is further amplified.By the three-stage amplifier that U5D, C12, R20 and adjustable resistance W1 form, third level amplifying circuit further amplifies electric signal.At last the electric signal that amplifies is input to the comparator circuit of being made up of U5A, R21-R25, C13-C15 and D7, relatively output square-wave signal in back inputs to processor of single chip computer U1.Adjustable resistance W1 adjusts the sensitivity of amplifying circuit.
The signal transmission circuit of transmitter module of the present utility model is that 13 human hair combing wastes by the processor of single chip computer U1 of transmitter module go out signal, constituting frequency through triode Q7 and peripheral cell C35, L5, sound table resonator SAW is 433MHz ultrahigh frequency radiating circuit, by tours antenna to aerial emission.Antenna adopts silver jacketed wire, and printed antenna is of a size of 24mm (length) * 9mm (height).Triode Q7 selects vapotron 2SC3355 for use.
As shown in Figure 6, the signal receiving circuit of the utility model receiver module is made up of integrated package U8 (T5744) and resistance, inductance, electric capacity, receive the signal that launches from transmitter module by antenna, through capacitor C 36, C37, be input to 9 pin of integrated package U8 (T5744), handle through integrated package U8 (T5744),, be input to 16 pin of processor of single chip computer U7 from the 20 pin output signals of integrated package U8.
Video circuit of the present utility model is made up of processor of single chip computer U7 (PIC16C62B), integrated package U10 (UPD6450) and peripheral resistance, electric capacity, triode, crystal oscillator Y2.Camera signals process electrochemical capacitor C2, and, be input to 20 pin of integrated package U10 (UPD6450) by triode Q4 amplification.7,14,15,16 pin of single-chip microcomputer U7 (PIC16C62B) connect 1 of U10 respectively, 2,3,4 foot control system integrated package U10, the distance of the 16 pin output barrier of single-chip microcomputer U7 (PIC16C62B), the signal in orientation, 4 pin that are connected to U10 input to U10, the processing of the distance of camera signals and barrier, the signal in orientation process U10, from the 19 pin output of U10,, the distance of barrier, orientation stack are presented on the picture of camera together through C3, Q5.The capable field synchronization separation module of camera signals through forming by integrated package U12 (74LS04) and peripheral resistance, electric capacity, export 14 pin of line synchronizing signal at 2 pin of U12 (74LS04), at 13 pin that arrive U10 in the 6 pin output field synchronizing signals of U12 (74LS04) to U10.Crystal oscillator Y2, C42 and C43 provide clock pulse signal to U10.Adjustable resistance R70, W1, W2 proofread and correct the demonstration of obstacle distance numerical value on the screen display, orientation indication.
Verbal cue circuit of the present utility model is by processor of single chip computer U7, integrated package U11 (LM386), voice integrated package U9 (API840N), the loudspeaker of screen display and peripheral resistance, electric capacity are formed, processor of single chip computer U7 (PIC16C62B) sends the corresponding instruction signal to voice integrated package U9 (API840N) according to orientation, the distance of barrier, voice signal sends verbal cue through power discharging integrated block U11 (LM386) processing and amplifying on loudspeaker.Voice signal through R49, C18, is connected to 3 pin of integrated package U11 in the 8 pin output of integrated package U9 (API840N), and through amplification, the processing of integrated package U11, the loudspeaker by C46 is connected to screen display enter for out sound.11 pin of processor of single chip computer U7 connect R26, and are far and near according to distance through R50, R27, C44, U11, C46, loudspeaker, send the bi..bi.. sound of different frequency.
The power circuit of receiver module is by inductance, capacitor filtering, through 5 volts of DC voltage of integrated package of pressure-stabilizing U13 (7805) output by the automobile storage battery input.
The utility model is when reversing, the driver is by the distance that shows picture that pickup camera is taken the photograph and barrier on the screen display, the situation that the car back is understood in the orientation, simultaneously send left, center, right, voice orientation according to distance, the orientation of barrier, and quote apart from digital speech from 0.35 meter to 2 meters etc., can quote other voice suggestion as required.
The utility model is installed, and is simple to operate.Realize the wireless receiving and dispatching signal by transmitter module and receiver module, line connects two big modules thereby need not in succession, reaches easy for installation.Camera is installed in the afterbody of automobile; Four ultrasonic sensors are installed in one on the left side of automobile tail, middle two, one on the right respectively; Screen display can be put in position by adjusting.
Claims (6)
1, a kind of wireless screen display language prompting reversing indicator, it is made up of transmitter module and receiver module, transmitter module is by ultrasonic transmit circuit, ultrasound wave received signal circuit, power circuit, signal transmission circuit and processor of single chip computer are formed, receiver module is by power circuit, signal receiving circuit, camera, video circuit, sound circuit, display screen and processor of single chip computer are formed, the processor of single chip computer timed sending ultrasonic pulse signal of transmitter module, send to more than one ultrasonic probe the ultrasonic pulse signal cycle assignment through channel selecting, ultrasound wave received signal circuit receives ultrasonic pulse signal and meets the signal that barrier reflects, through operational amplification circuit, transmit signal to processor of single chip computer, processor of single chip computer calculates the signal that receives, compare the distance between each ultrasonic probe and the barrier, draw the nearest distance of barrier and ultrasonic probe, the orientation, the signal of camera picked-up picture is by the video superimpose circuit, output to screen display, processor of single chip computer output corresponding instruction signal, the control language cue circuit, the loudspeaker of verbal cue drives screen display send alarm sound, it is characterized in that transmitter module sends corresponding signal by signal transmission circuit, the signal receiving circuit of receiver module receives the distance that transmitter module sends, bearing signal is input to processor of single chip computer.
2, wireless screen display language prompting reversing indicator according to claim 1, it is characterized in that processor of single chip computer U1 timed sending ultrasonic pulse signal, send to more than one ultrasonic probe the ultrasonic pulse signal cycle assignment through selector switch, processor of single chip computer U1 carries out computing with the signal that receives, relatively, draw the nearest distance and bearing between ultrasonic probe and the barrier, send signal by signal transmission circuit, the signal that receiver module receives is input to processor of single chip computer U7, processor of single chip computer U7 is according to the distance of barrier, command signal is sent to verbal cue circuit and video superimpose circuit in the orientation, the picture signal that camera is taken the photograph and the distance of barrier, bearing signal is handled by U10, and stack is presented on the screen display.
3, wireless screen display language prompting reversing indicator according to claim 1, it is characterized in that multidiameter option switch integrated package U3 sends the ultrasonic pulse signal cycle assignment to ultrasonic probe, each ultrasonic probe links to each other with integrated package U3 by the ultrasonic probe match circuit, the ultrasonic probe match circuit is made up of transtat and triode, transtat connects triode and ultrasonic probe, voltage is improved, send ultrasonic pulse signal to promote ultrasonic probe.
4, wireless screen display language prompting reversing indicator according to claim 1, it is characterized in that ultrasonic pulse signal meets signal that barrier fires back through input integrated package U3 after the filtering of diode, the operational amplification circuit frequency-selecting that electric signal is made up of integrated package U5 and peripheral cell, amplification and shaping are handled, and input to processor of single chip computer U1.On integrated package U5D, connect adjustable resistance W1.
5, wireless screen display language prompting reversing indicator according to claim 1,13 human hair combing wastes that it is characterized in that processor of single chip computer U1 go out signal, through triode Q7, it is 433MHz ultrahigh frequency radiating circuit that C35, L5, SAW constitute frequency, launches by tours antenna.
6, wireless screen display language prompting reversing indicator according to claim 1, it is characterized in that signal receiving circuit is made up of integrated package U8 and resistance, inductance, electric capacity, receive the signal that launches from transmitter module by antenna, through capacitor C 36, C37, be input to 9 pin of integrated package U8, handle through integrated package U8,20 pin output signals from integrated package U8 are input to processor of single chip computer U7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060919 CN2867296Y (en) | 2005-06-29 | 2005-06-29 | Wireless screen displaying speech prompting vehicle-reversing indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520060919 CN2867296Y (en) | 2005-06-29 | 2005-06-29 | Wireless screen displaying speech prompting vehicle-reversing indicator |
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| Publication Number | Publication Date |
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| CN2867296Y true CN2867296Y (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520060919 Expired - Fee Related CN2867296Y (en) | 2005-06-29 | 2005-06-29 | Wireless screen displaying speech prompting vehicle-reversing indicator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082831A1 (en) * | 2007-12-27 | 2009-07-09 | Shenzhen Gospell Smarthome Electronic Co., Ltd | Vehicle rearview instrument |
| CN102259618A (en) * | 2010-05-25 | 2011-11-30 | 德尔福(中国)科技研发中心有限公司 | Warning treatment method for fusion of vehicle backward ultrasonic and camera |
| CN102485535A (en) * | 2010-12-03 | 2012-06-06 | 北京汽车研究总院有限公司 | Auxiliary device for backing |
| CN103325276A (en) * | 2013-06-25 | 2013-09-25 | 天津云视科技发展有限公司 | Device for realizing parking positioning monitoring through surface acoustic wave label |
-
2005
- 2005-06-29 CN CN 200520060919 patent/CN2867296Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082831A1 (en) * | 2007-12-27 | 2009-07-09 | Shenzhen Gospell Smarthome Electronic Co., Ltd | Vehicle rearview instrument |
| CN102259618A (en) * | 2010-05-25 | 2011-11-30 | 德尔福(中国)科技研发中心有限公司 | Warning treatment method for fusion of vehicle backward ultrasonic and camera |
| CN102259618B (en) * | 2010-05-25 | 2015-04-22 | 德尔福(中国)科技研发中心有限公司 | Warning treatment method for fusion of vehicle backward ultrasonic and camera |
| CN102485535A (en) * | 2010-12-03 | 2012-06-06 | 北京汽车研究总院有限公司 | Auxiliary device for backing |
| CN103325276A (en) * | 2013-06-25 | 2013-09-25 | 天津云视科技发展有限公司 | Device for realizing parking positioning monitoring through surface acoustic wave label |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20120629 |