CN2561035Y - Multimedia wireless two-way visval voice teaching host and machine for students - Google Patents
Multimedia wireless two-way visval voice teaching host and machine for students Download PDFInfo
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- CN2561035Y CN2561035Y CN 02273226 CN02273226U CN2561035Y CN 2561035 Y CN2561035 Y CN 2561035Y CN 02273226 CN02273226 CN 02273226 CN 02273226 U CN02273226 U CN 02273226U CN 2561035 Y CN2561035 Y CN 2561035Y
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Abstract
A multimedia wireless bi-directional visible sound teaching host computer and student computer, by which the frequency can be adjusted and the numbers of the student computers, has the functions of bi-directional image teaching, bi-directional communication, teacher guiding and students following, self reciting and listening of the students and online translation when being used online, and visible play, repeated reading and translation when being used singly. An input end of the audio frequency amplifier in the host computer is connected with a visible repeated reading tape unit. An emission unit and a reception unit are respectively connected with a frequency synthesis unit, which is used for tuning. A display screen for showing the numbers of the student computers is connected on a system control unit. The tape unit in the student computer is visible repeated reading tape unit. Output ends of a decoder and the visible repeated reading tape unit are connected with a video frequency decoding unit, an electronic dictionary reservoir and a liquid crystal display through an electronic switch unit. The emission unit and the reception unit are also respectively connected with the frequency synthesis unit, so as to realize the adjustment of the frequency. An application button is connected with a telecommunication control end of the system control unit, so as to realize the communication between the student computer and the host computer.
Description
Technical field
The utility model is combine together concrete application in the voice electronic teaching such as multimedia technology, radio communication technology, wireless coding and decoding technology, visual re-reading technology, frequency synthesis technique, particularly a kind of multi-media radio bidirectional visual phonetic teaching main frame and student's machine.
Background technology
Wireless speech Education Literature System in the past mostly is one-way transmission, and promptly teaching machine can only be broadcast voice, and student's machine can only receive voice, can not realize that all video transmits, and it is not lively to impart knowledge to students, interactive not strong yet; Be unfavorable for that the student understands the content of courses better; Can not realize sound, video bi-directional synchronization instructional function between the two.Existing a kind of multimedia wireless speech intercommunication tutoring system, its main frame comprises power circuit, the diphthong coding device, sound signal is modulated into the transmitter unit of FM signal and the emitting antenna that the FM signal radiation is gone out, magnetic tape station, microphone, note amplifier, be connected on the volume control unit and the power amplifier output stage of note amplifier output terminal, signal output part in the power amplifier output stage is connected to earphone and external loudspeaker, its signal input part at note amplifier is connected to CD drive, said CD drive is also drawn vision signal through video output interface, be used for realizing that sound and image synchronization transmit, be connected at the input end of note amplifier and be used for that the FM signal is carried out detection and amplify and be reduced into the receiving element of sound signal and be used for responding to the receiving antenna of the FM signal that student's machine sends, this multimedia wireless speech intercommunication tutoring system also has a keyboard, is connected to by keyboard to be used to select magnetic tape station or CD drive work, signal transmits between control transmitter unit and the note amplifier, signal transmits and controls the control module that signal transmits between power amplifier output stage and the external loudspeaker between receiving element and the note amplifier; Its student's machine comprises the receiving antenna that is used for receiving the FM signal that main frame sends, the FM signal is reduced into the receiving element of sound signal, volume power amplifier level and earphone that sound signal is amplified, the output terminal of receiving element be connected to by filtering circuit be used for to main frame in the coded signal that sends of the diphthong coding device double-tone interpreter code frequently device that carries out interpreter code, its output terminal at double-tone interpreter code frequently device is connected to student's machine control module, said double-tone interpreter code frequently device is reduced into the command level signal with the sound signal that receives and delivers to student's machine control module, student's machine control module is connected on microphone unit, between transmitter unit and the volume power amplifier level, be used for volume power amplifier unit or transmitter unit being delivered in the sound signal switching of microphone unit output according to the command level signal of double-tone interpreter code frequently device output, the emitting antenna of sound signal through linking to each other with transmitter unit of delivering to transmitter unit radiate to be realized leading in reading aloud and intercommunication function, and the sound signal of delivering to volume power amplifier level is reduced into sound through earphone and realizes from reading aloud from listening, with reading function.
It is blended in phonetic teaching with multimedia technology and wireless communication technology and realizes real-time intercommunication, leads in reading aloud with reading, read aloud certainly from listening by receiving element, receiving antenna, transmitter unit and emitting antenna and diphthong coding device, double-tone interpreter code frequently device, by being set, CD drive realizes the image teaching, and then realize the interactive teaching pattern of the synchronous driving of sound, image, change the single in the past teaching pattern of hearing, quality of instruction and interest are got a qualitative improvement, to improving teaching pattern, improve student's Foreigh-language oral-speech ability to express, played certain effect.
But also there are some problems in it: the one, and interpretative function when this device can not be realized translation on line and unit work; The 2nd, main frame and student's machine have only a frequency, can not adjust; The 3rd, on main frame, can not show student's machine numbering, use inconvenient.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, have bidirectional picture teaching, two-way intercommunication when a kind of online use is provided and realize the teacher lead in reading aloud the student with read, the student from read aloud from listen, realize when translation on line and unit work visual playback, re-reading, interpretative function and frequency adjustable and can show student's machine numbering multi-media radio bidirectional visual phonetic teaching main frame and student's machine.
Said multi-media radio bidirectional visual phonetic teaching main frame comprises power circuit, system control unit, the electronic switch unit that links to each other with system control unit, coding unit, sound signal is modulated into the transmitter unit and the emitting antenna of FM signal, decoding unit and the FM signal is modulated into the receiving element and the receiving antenna of sound signal, note amplifier and microphone, volume control unit and power amplifier output stage, signal output part in the power amplifier output stage is connected to earphone and external loudspeaker, between power amplifier output stage and loudspeaker, be connected to monitoring unit by electronic switch unit control, signal input part at note amplifier is connected to CD drive, said CD drive is directly exported vision signal through video output unit one tunnel, and another road is drawn sound signal and is modulated into FM signal radiation to student's machine and is used for realizing that sound and image synchronization transmit; Said electronic switch unit is connected on video output unit, audio amplification unit, between video amplification unit and the coding unit, between decoding unit and the volume control unit between note amplifier and the volume control unit, said system control unit realizes selecting visual magnetic tape station or CD drive work by coupled keyboard unit control electronic switch unit, the control audio amplifier, signal transmits between video output unit and video amplification unit and the transmitter unit, reach signal transmission between note amplifier and the volume control unit between receiving element and the volume control unit, its special character, input end at note amplifier is connected to visual re-reading magnetic tape station, said visual re-reading magnetic tape station is that carrier one tunnel is directly exported vision signal with the tape, note amplifier is passed through on another road, video amplification unit to electronic switch unit with sound signal, vision signal is sent into transmitter unit and is modulated into the FM signal radiation, be used for realizing sound and literal synchronous driving to student's machine again, said transmitter unit also links to each other with the frequency synthesis unit that is used for adjusting frequency respectively with receiving element, also is connected to the display screen that is used for showing student's machine numbering on system control unit.
According to above-mentioned multi-media radio bidirectional visual phonetic teaching main frame, on system control unit, be used for connecing the CRT interface and the I/O interface that is used for realizing computer software control of LCD in addition.
According to above-mentioned multi-media radio bidirectional visual phonetic teaching main frame, said emitting antenna and receiving antenna are common antenna.
Said multi-media radio bidirectional visual phonetic teaching student machine comprises receiving antenna, the FM signal is reduced into the receiving element of sound signal, demoder, emitting antenna, transmitter unit and scrambler, volume control unit and power amplifier unit, note amplifier and be connected on the magnetic tape station and the microphone of note amplifier input end, be connected between note amplifier and the scrambler, be used for realizing the electronic switch unit that signal transmits between demoder and the volume control unit and between note amplifier and the volume control unit, be used for receiving the different coding that instructs electronic switch unit is sent the system control unit that corresponding steering order is carried out switch control by the signal that the decoding main frame is sent out, said electronic switch unit also is used for according to the instruction of interpreter code unit output, by output corresponding actions instruction after the system identification sound signal of microphone unit output is delivered to the volume power amplifier unit again to transmitter unit, its special character is that said magnetic tape station is visual re-reading magnetic tape station, also be connected to video decoding unit at the output terminal of demoder and the output terminal of visual re-reading magnetic tape station by electronic switch unit, the electronic dictionary reservoir and respectively with video decoding unit, the LCD that the electronic dictionary reservoir links to each other, play the interpretative function of magnetic tape station when realizing translation on line and unit state after the visual vision signal decipher that is used for student's machine is received, said transmitter unit also links to each other with the frequency synthesis unit respectively with receiving element, be used for realizing the adjustment of frequency, Communication Control termination at system control unit has the application button, is used for realizing the communication between student's machine and the main frame.
According to above-mentioned multi-media radio bidirectional visual phonetic teaching student machine, said emitting antenna and receiving antenna are common antenna.
The utility model has the advantages that multimedia technology, radio communication technology, wireless encoding technology, video decode technology, lcd technology are blended in phonetic teaching, and by receiving element, transmitter unit, antenna and codec unit realize two-way intercommunication, lead in reading aloud with read, read aloud certainly from listen, translation on line and the unit state function of translation down; By being set, CD drive and visual magnetic tape station realize two-way audio-visual teaching.Thereby realized the interactive teaching pattern that sound, image bi-directional synchronization transmit, changed the single in the past teaching pattern of hearing.Teaching pattern is convenient to get a qualitative improvement quality of instruction and interest flexibly, to popularizing phonetic teaching, improving teaching pattern, improves student's Foreigh-language oral-speech ability to express, has played substantial role.
Description of drawings
Fig. 1 is this multi-media radio bidirectional visual phonetic teaching host circuit block scheme;
Fig. 2 is this multi-media radio bidirectional visual phonetic teaching student machine circuit block scheme;
Embodiment
As shown in the figure, the utility model is become with several student mechanisms by main frame, power circuit 21 is arranged in the said main frame, system control unit 1, be connected on the keyboard 17 of system control unit 1 input end, by the electronic switch unit 2 of system control unit 1 by keyboard 17 control actions, wireless encoding unit 7, sound signal is modulated into the transmitter unit 3 of FM signal, decoding unit 6, integrating circuit 6` and the FM signal is modulated into the receiving element 4 of sound signal, note amplifier 11 and microphone 24, the volume control unit 8 and the power amplifier output stage 9 of joining by electronic switch unit 2 with note amplifier 11, signal output part in power amplifier output stage 9 is connected to earphone 15 and external loudspeaker 16, between power amplifier output stage 9 and external loudspeaker 16, also be connected to monitoring unit 10 by electronic switch unit 2 controls, signal input part at note amplifier 11 is connected to CD drive 23 and visual re-reading magnetic tape station 13, said CD drive 23 one the tunnel is directly exported vision signal behind video output unit 14, another road is drawn sound signal and is modulated into the FM signal, is radiated to student's machine and is used for realizing that sound and image synchronization transmit; Said visual magnetic tape station 13 is that carrier one tunnel is directly exported vision signal with the tape, another road is by note amplifier 11, video amplification unit 12 to electronic switch unit 2 with sound signal, vision signal is sent into transmitter unit 3 and is modulated into the FM signal radiation, be used for realizing sound and literal synchronous driving to student's machine again, the emitting antenna that links to each other with transmitter unit 3 is a common antenna 22 with the receiving antenna that links to each other with receiving element 4, said transmitter unit 3 and receiving element 4 also with the frequency synthesis unit 5 that is used for adjusting frequency, with transmission frequency and the receive frequency of adjusting student's machine as required, on system control unit 1, also be connected to the display screen 18 that is used for showing student's machine numbering, be used in addition on the said system control unit 1 external LCD CRT interface 19 and be used for realizing the I/O interface 20 of computer software control.
Said electronic switch unit 2 is connected on video output unit 14, note amplifier 11, between video amplification unit 12 and the coding unit 7 and between decoding unit 6 and volume control unit 8 and note amplifier 11 and the volume control unit 8, keyboard unit 17 control electronic switch units 2 actions of said system control unit 1 by being connected on its input end realize selecting the adjustment of visual re-reading magnetic tape station 13 or CD drive 23 work and frequency to set, control of video output unit 14, note amplifier 11, signal transmits between video amplification unit 12 and the transmitter unit 3, between receiving element 4 and the volume control unit 8, signal transmits between note amplifier 11 and the volume control unit 8.
Said student's machine comprises power circuit 41, be used for receiving the common antenna 44 of the FM signal that main frame sends, the receiving element 28 that is used for the FM signal is reduced into sound signal that links to each other with shared antenna 44, be connected to by integrating circuit 29 at the output terminal of receiving element 28 and be used for the host code signal is carried out the demoder 30 of interpreter code, on common antenna 44, also be connected to transmitter unit 25 and scrambler 26, also has volume control unit 35 in said student's machine, power amplifier unit 36 and loudspeaker 37 and earphone 45, note amplifier 38 and the microphone 39 and the visual re-reading magnetic tape station 40 that link to each other with note amplifier 38, between note amplifier 38 output terminals and scrambler 26, be connected to electronic switch unit 34 between demoder 30 and the volume control unit 35 and between note amplifier 38 and the volume control unit 35, said electronic switch unit 34 links to each other with system control unit 42, the different coding that system control unit 42 instructs by the signal reception that the decoding main frame is sent out sends corresponding steering order to electronic switch unit 34 and carries out switch transition control, electronic switch unit 34 is according to the instruction of decoding unit 30 outputs, by system control unit 42 identification back output corresponding actions instructions the sound signal of microphone 39 outputs is delivered to note amplifier 38, transmitter unit 25, the antenna 44 of sound signal through linking to each other with transmitter unit 25 of delivering to transmitter unit 25 radiate to be realized leading in reading aloud and intercommunication function, the sound signal of delivering to volume control unit 35 and power amplifier unit 36 is reduced into sound through earphone 45 and realizes from reading aloud from listening, with reading function, the output terminal of the output terminal of demoder 30 and visual re-reading magnetic tape station 40 also is connected to video decoding unit 32 by electronic switch unit 2, when being used for realization translation on line after the visual vision signal decipher of student's machine reception and realization unit state, electronic dictionary memory 31 and LCD 33, said electronic dictionary memory 31 play the interpretative function of magnetic tape station 40.Said transmitter unit 25 also links to each other with frequency synthesis unit 27 respectively with receiving element 28, is used for realizing the adjustment of frequency.Also be connected to application button 43 at the Communication Control end of system control unit 42, be used for realizing the communication between student's machine and the main frame.
The tutoring system that this multi-media radio bidirectional visual phonetic teaching main frame becomes with student mechanism can realize following function:
One, the function of system bidirectional image, phonetic teaching
When main frame is in emission,, after system control unit 1 is received instruction, drive electronic switch 2 corresponding actions by keyboard 17 input conversion instructions.When instruction during for visual broadcast magnetic tape station, respective foot is exported high level respectively and is gone to control electronic switch 2 respective foot in the system control unit 1.At this moment, visual magnetic tape station 13 sound signals and vision signal respectively in electronic switch 2 respective foot deliver to respective foot in the volume control unit 8, realize volume control.Press the monitoring in the keyboard 17, whether system control unit 1 identification back control monitoring unit 10 is monitored, thereby realizes monitoring control; The second the tunnel in electronic switch 2 respective foot deliver to and be sent to behind the coding unit 7 after transmitter unit 3 amplifies, radiate from antenna 22.
Two, the function of systematic teaching monitoring realizes
When being converted to dvd playback by keyboard 17, system control unit 1 output steering order respective foot to the electronic switch 2, signal was leaded up in the electronic switch 2 respective foot and was delivered to volume control unit 8 this moment, and power amplifier output stage 9 and monitoring circuit 10 and loudspeaker 16 are finished monitoring; Another road, be sent to coding unit 7 and radiating circuit unit 3 after, radiate from antenna 22; Also have one the tunnel to be sent to the demodulation that video output unit 14 is finished image.
Three, the function of system bidirectional image, the switching of phonetic teaching state
After system control unit 1 is received the instruction of keyboard 17 switches,, control corresponding circuit conversion in power panel Unit 21, thereby realize the conversion between visual magnetic tape station 13, the CD drive 23 from the respective foot output switched voltage of system control unit 1.
Four, the function of system bidirectional communication intercommunication
After keyboard 17 is keyed in the instruction of both-way communication intercommunication function, after system control unit 1 is discerned, enter holding state, electronic switch 2 actions by the respective foot demonstration control of system control unit 1, drive the state of display screen 18.When main frame and the intercommunication of student's machine or student's machine during by the 43 application intercommunications of application button, after receiving element 4 is delivered in master machine antenna 22 receptions, after entering volume control circuit 8, power amplifier output stage 9, monitoring 10, loudspeaker 10 at 2: the one tunnel, electronic switch carries out sounding again through decoding unit 6 decodings; One the tunnel enters main frame earphone 16; Another road signal is after system identification, and student's plane No. sign indicating number of output application is delivered to display screen 18 and shown.Main frame microphone 24 signals enter power amplifier unit 9, coding unit 7, transmitter unit 3 and antenna 22, finish the both-way communication intercommunication function of classmate's life.
Five, the operation computer software is realized the function of system operation and external display
In system control unit 1, be connected to I/O interface 20, by computer run multi-media radio bidirectional visual phonetic teaching system operating software, carry out serial communication with system control unit 1, thereby realize the operation of main frame operation computer software realization systemic-function.External display on CRT interface 19 can show.
Six, interpretative function
The signal that main frame sends behind electronic switch unit 2, through video decoding unit 32, LCD 33 display statements, behind the connection electronic dictionary memory 31, can be realized the statement translation on line function that will show through receiving element 28, decoding unit 30.Under the unit state, the statement that magnetic tape station is play, can be translated after video decoding unit 32, LCD 33 display statements are connected electronic dictionary memory 31 through electronic switch unit 2.
Claims (5)
1, a kind of multi-media radio bidirectional visual phonetic teaching main frame, comprise power circuit, system control unit, the electronic switch unit that links to each other with system control unit, coding unit, sound signal is modulated into the transmitter unit and the emitting antenna of FM signal, decoding unit and the FM signal is modulated into the receiving element and the receiving antenna of sound signal, note amplifier and microphone, volume control unit and power amplifier output stage, signal output part in the power amplifier output stage is connected to earphone and external loudspeaker, between power amplifier output stage and loudspeaker, be connected to monitoring unit by electronic switch unit control, signal input part at note amplifier is connected to CD drive, said CD drive is directly exported vision signal through video output interface one tunnel, and another road is drawn sound signal and is modulated into FM signal radiation to student's machine and is used for realizing that sound and image synchronization transmit; Said electronic switch unit is connected on video output unit, between note amplifier and video amplification unit and the coding unit, between decoding unit and the volume control unit and between note amplifier and the volume control unit, said system control unit realizes selecting visual magnetic tape station or CD drive work by coupled keyboard unit control electronic switch unit, the control of video output unit, note amplifier, signal transmits between video amplification unit and the transmitter unit, signal transmits between receiving element and volume control unit and the power amplifier output stage, it is characterized in that being connected to visual re-reading magnetic tape station at the input end of note amplifier, said visual re-reading magnetic tape station is that carrier one tunnel is directly exported vision signal with the tape, note amplifier is passed through on another road, video amplification unit to electronic switch unit with sound signal, vision signal is sent into transmitter unit and is modulated into the FM signal radiation, be used for realizing sound and literal synchronous driving to student's machine again, said transmitter unit also links to each other with the frequency synthesis unit that is used for adjusting frequency respectively with receiving element, also is connected to the display screen that is used for showing student's machine numbering on system control unit.
2, multi-media radio bidirectional visual phonetic teaching main frame according to claim 1 is characterized in that the I/O interface that is used for connecing the CRT interface of LCD in addition and is used for realizing computer software control on system control unit.
3, multi-media radio bidirectional visual phonetic teaching main frame according to claim 1 is characterized in that said emitting antenna and receiving antenna are common antenna.
4, a kind of multi-media radio bidirectional visual phonetic teaching student machine, comprise receiving antenna, the FM signal is reduced into the receiving element of sound signal, be used for demoder and emitting antenna that the host code signal is decoded, transmitter unit and scrambler, volume control unit and power amplifier unit, note amplifier and be connected on the magnetic tape station and the microphone of note amplifier input end, be connected between note amplifier and the scrambler, realize the electronic switch unit that signal transmits between demoder and the volume control unit and between note amplifier and the volume control unit, be used for receiving the different coding that instructs electronic switch unit is sent the system control unit that corresponding steering order is carried out switch control by the signal that the decoding main frame is sent out, said electronic switch unit is used for according to the instruction of interpreter code unit output, by output corresponding actions instruction after the system identification sound signal of microphone unit output is delivered to the volume power amplifier unit again to transmitter unit, it is characterized in that said magnetic tape station is visual re-reading magnetic tape station, also be connected to video decoding unit at the output terminal of demoder and the output terminal of visual re-reading magnetic tape station by electronic switch unit, the electronic dictionary memory and and video decoding unit, the LCD that the electronic dictionary memory links to each other, play the interpretative function of magnetic tape station when realizing translation on line and unit state after the visual vision signal decipher that is used for student's machine is received, said transmitter unit also links to each other with the frequency synthesis unit respectively with receiving element, be used for realizing the adjustment of frequency, Communication Control termination at system control unit has the application button, is used for realizing the communication between student's machine and the main frame.
5, multi-media radio bidirectional visual phonetic teaching student machine according to claim 4 is characterized in that said emitting antenna and receiving antenna are common antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273226 CN2561035Y (en) | 2002-05-19 | 2002-05-19 | Multimedia wireless two-way visval voice teaching host and machine for students |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273226 CN2561035Y (en) | 2002-05-19 | 2002-05-19 | Multimedia wireless two-way visval voice teaching host and machine for students |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561035Y true CN2561035Y (en) | 2003-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02273226 Expired - Fee Related CN2561035Y (en) | 2002-05-19 | 2002-05-19 | Multimedia wireless two-way visval voice teaching host and machine for students |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561035Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289282A (en) * | 2011-06-13 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Electronic control device used in synchronous system and synchronous control method thereof |
| CN102663909A (en) * | 2012-04-09 | 2012-09-12 | 大连联达科技有限公司 | Wireless phonetic teaching system |
| CN103248439A (en) * | 2013-04-08 | 2013-08-14 | 贵州航天天马机电科技有限公司 | Wireless communication equipment failure detection system and method thereof |
| CN106961587A (en) * | 2017-04-27 | 2017-07-18 | 泰州市永正救护装备有限公司 | Double-directional speech high-resolution wireless digital graphic transmission equipment |
-
2002
- 2002-05-19 CN CN 02273226 patent/CN2561035Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289282A (en) * | 2011-06-13 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Electronic control device used in synchronous system and synchronous control method thereof |
| CN102289282B (en) * | 2011-06-13 | 2013-11-06 | 鸿富锦精密工业（深圳）有限公司 | Electronic control device used in synchronous system and synchronous control method thereof |
| CN102663909A (en) * | 2012-04-09 | 2012-09-12 | 大连联达科技有限公司 | Wireless phonetic teaching system |
| CN102663909B (en) * | 2012-04-09 | 2014-03-05 | 大连联达科技有限公司 | Wireless phonetic teaching system |
| CN103248439A (en) * | 2013-04-08 | 2013-08-14 | 贵州航天天马机电科技有限公司 | Wireless communication equipment failure detection system and method thereof |
| CN103248439B (en) * | 2013-04-08 | 2015-01-28 | 贵州航天天马机电科技有限公司 | Wireless communication equipment failure detection system and method thereof |
| CN106961587A (en) * | 2017-04-27 | 2017-07-18 | 泰州市永正救护装备有限公司 | Double-directional speech high-resolution wireless digital graphic transmission equipment |
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| CF01 | Termination of patent right due to non-payment of annual fee |