WO1997005494A1 - Lan tester - Google Patents
Lan tester Download PDFInfo
- Publication number
- WO1997005494A1 WO1997005494A1 PCT/JP1996/002106 JP9602106W WO9705494A1 WO 1997005494 A1 WO1997005494 A1 WO 1997005494A1 JP 9602106 W JP9602106 W JP 9602106W WO 9705494 A1 WO9705494 A1 WO 9705494A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal line
- power supply
- pair
- lan
- polarity
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
Definitions
- the present invention relates to a test device that easily performs disconnection, short circuit, polarity check, connection test, reverse connection test, etc. in a LAN (Local Area Network). Background technology
- Such a network is commonly referred to as a LAN.
- LAN Local Area Network
- OS Operating System
- connection work of the folding connector for conducting the continuity test has a problem that it may cause new troubles such as connection error and poor contact.
- the connection confirmation test including HUB etc. cannot be performed.
- An object of the present invention is to provide a LAN tester that solves the above-mentioned problems, can perform a cable continuity test and an erroneous wiring confirmation test only at one end, and can also perform a simple operation test including a HUB and the like. Disclosure of invention
- the LAN tester of the present invention selects the continuity test mode as the operation mode by itself or by the switching switch (first switching switch) when performing the continuity test, and selects two signal lines.
- a power supply unit that supplies power supply current to any one signal line at one end of the bearing signal line, and a side that does not supply power supply current by the power supply unit at one end of the pair signal line to be tested. It is configured to include a current detection unit that detects the current flowing through the signal line of. As a result, if there is a failure such as a disconnection in the signal line, the current detection unit does not detect the current, and if there is no abnormality in the signal line, the current detection unit detects a predetermined current.
- a forward polarity detector that detects positive pulses from and negative pulses from the negative side signal line, and a negative pulse from the positive side signal line and positive from the negative side signal line at one end of the signal line to be tested. It may be configured to include a reverse polarity detection unit that detects a pulse. As a result, when a pulse is detected by the forward polarity detector, it is confirmed that the signal line has the correct polarity. On the other hand, when a pulse is detected by the reverse polarity detector, it can be confirmed that the signal line has the reverse polarity.
- the operation test mode When performing an operation test, select the operation test mode as the operation mode by itself or by using the first switching switch and the second switching switch, and connect the terminal for connecting the transmission signal line and the reception signal. Detects positive pulses from the positive electrode side signal line and negative pulses from the negative electrode side signal line at one end of the signal line to be tested and the folded connection part that connects the terminals for connecting the wires. Positive at one end of the forward polarity detector and the signal line to be tested It is configured to include a reverse polarity detection unit that detects a negative pulse from the polar side signal line and a positive pulse from the negative electrode side signal line.
- the pulse of the transmission signal line is folded back to the reception signal line to generate a pseudo signal, so that the operating state of the connected HUB or AUI (terminal device) is in the forward polarity detector and in reverse. It can be confirmed by the polarity detector.
- the continuity test mode should be selected and tested as the operation mode by itself or by the switching switch (first switching switch), as in the case of conducting the continuity test.
- the power supply unit that supplies power supply current to any one signal line at one end of the pair signal line, and to the signal line on the side that does not supply power supply current from the power supply unit at one end of the pair signal line. It is configured to include a current detection unit that detects the flowing current and a reverse connection confirmation circuit that is inserted and connected to the two signal lines at the other ends of the paired signal lines.
- This reverse connection confirmation circuit consists of a pair of unidirectional elements that clearly indicate the state when at least one is energized, connected in antiparallel. As a result, the state of the unidirectional element in the reverse connection confirmation circuit differs between the forward connection and the reverse connection, so that the connection state can be confirmed.
- the reverse connection confirmation circuits are arranged in combination, and the power supply current is connected to the plurality of pair signal lines connected to each reverse connection confirmation circuit. It is preferable to provide a power supply control means for controlling the power supply timing of the power supply unit.
- FIG. 1 is a circuit diagram showing an embodiment of a LAN tester in the present invention
- FIG. 2 is a diagram showing a connection relationship with a HUB and AUI when a continuity test is performed by the LAN tester of the present invention
- Fig. 3 is an extracted view of the main part of Fig. 1 for explaining an operation example in the continuity test by the LAN tester of the present invention
- Fig. 4 is a diagram showing the connection relationship with the HUB when performing a polarity test with the LAN tester of the present invention
- Fig. 5 is a diagram showing the connection relationship with the HUB when performing a communication monitor with the LAN tester of the present invention. It is a diagram showing the connection relationship with AU I, and Fig.
- FIG. 6 is a main part extraction diagram of Fig. 1 for explaining the polarity test by the LAN tester of the present invention and the operation example in the communication monitor.
- Fig. 7 is a diagram showing an example of the waveform of the trigger pulse (carrier component) in Fig. 4
- Fig. 8 is a diagram showing an example of the waveform during communication in Fig. 5
- Fig. 9 is a diagram of the present invention. It is a figure which shows the connection relationship with HU B or AUI when the simple operation test is performed by the LAN tester of the present invention
- Fig. 10 (a) and (b) are in the simple operation test by the LAN tester of this invention.
- This is an extracted diagram of the main parts of Fig. 1 to explain an operation example, and Fig.
- FIG. 11 is a configuration for confirming the presence or absence of incorrect wiring of a general-purpose 8-pin modular jack used for LAN wiring.
- a diagram showing an example Fig. 12 (a) is a diagram showing the state when the bare signal lines are connected in the forward direction, and Fig. 12 (b) is a diagram showing the state when the bare signal lines are connected in reverse.
- Fig. 13 (a) and (b) are both diagrams showing the state in which other signal lines are erroneously connected. The best mode for carrying out the invention
- FIG. 1 is a circuit configuration diagram showing a form example when this LAN tester is implemented.
- the power supply unit 2, the current detection unit 3, the forward polarity detection unit 4, and the reverse polarity detection unit 5 are roughly classified.
- the first switching switch (switching switch) 6 and the second switching switch 7 which has the function of the folding connection part.
- RA and RB are reception terminals
- SA and SB are transmission terminals.
- the power supply unit 2 consists of a power supply switch SWP and a built-in battery E, and is a current checker.
- the output 3 is composed of a bipolar transistor Q3, a light emitting dial LY1, LY2 that lights up in yellow, and a plurality of resistors R1, R7, R8, R14.
- the resistors R7 and R8 are provided to turn on the bipolar transistor Q3, turn off the bipolar transistor Q2, and supply the power supply current to the transmission terminal SA. 560 ⁇ is appropriate for Rl and R 14, and about 10 is appropriate for R 7 and R 8.
- the forward polarity detector 4 consists of a bipolar transistor Q 4, a field effect transistor Q 5, a light emitting die LG that lights up in green, resistors R 12, R 1, 3, R 15, R 16, and a capacitor C 2.
- the reverse polarity detector 5 is composed of a bipolar transistor Q 2, a field effect transistor Q 1, a light emitting diode LR that lights up in red, resistors R4, R 5, R 6, R9, and a capacitor C 1.
- the resistors R 10 and R 11 are provided to bias the bipolar transistors Q 2 and Q 4.
- a smoothing circuit is composed of capacitor C 1 and resistor R 5, capacitor C 2 and resistor R 15.
- Resistors R6, R 9, R 12, R 13 are lk Q, R 10 is 270 Q, R 1 1 is 4.7 k ⁇ Resistors R 4, R 16 are 500 k Q, resistors R 5, R 15 are 5 ⁇ , Around 0 is appropriate for capacitors CI and C 2.
- the first switching switch 6 turns on / off the connection terminal 1a and connects the transmission terminal SB to either the connection terminal 2a or 2b from the switch SW1.
- the second switching switch 7 is composed of a switch SW2 that connects the transmission terminal SA and the reception terminal RA, and the transmission terminal SB and the reception terminal RB, respectively. There is.
- Fig. 2 shows the HU when conducting a continuity test with the LAN tester of the present invention. It is a diagram showing the connection relationship with B (or AU I) 20, and Fig. 3 is a circuit configuration diagram in which the main parts of Fig. 1 are extracted to explain an operation example in the continuity test. 0
- the LAN tester 1 shown in Fig. 1 is equivalent to the circuit shown in Fig. 3.
- the above-mentioned current path will be cut off. Therefore, the light emitting die L Y 1 does not light up, and it can be seen that there is an abnormality in the receiving line or HUB 20.
- Fig. 4 shows the connection relationship with the HUB 40 when the polarity test is performed by the LAN tester 1 of the present invention
- Fig. 5 shows the HUB when the communication monitor is performed by the LAN tester 1 of the present invention
- 40 is a diagram showing the connection relationship with AU I 50
- Fig. 6 is a circuit configuration diagram in which the main parts of Fig. 1 are extracted to explain an operation example in the polarity test and communication monitor.
- the bipolar transistors Q3 are off, so the bipolar transistors Q2 and Q4 are in the active state.
- the switch SW1 (2 b part) is connected to the terminals S B, so that the switch data monitoring function works. Therefore, the LAN tester 1 shown in Fig. 1 is equivalent to the circuit shown in Fig. 6.
- the L AN tester 1 of the present invention is inserted between the communication Cape Le, thereby c connecting the HUB 40, AU I 50 As shown in FIG. 5, as shown in FIG. 8
- the communication status can be monitored by the operation during the polar test described above. That is, when a waveform is applied in which a positive pulse is continuously applied to the terminal SA and a negative pulse is continuously applied to the terminal SB, the light emitting die LG lights up in green. When a waveform is applied in which a negative pulse is continuously applied to the terminal SA and a positive pulse is continuously applied to the terminal SB, the light emitting diode LR lights up in red.
- the signal can be easily monitored by blinking each light emitting diode LG and LR.
- the signal voltage flowing through the cable for turning on the transistors Q l and Q 5 is a very short pulse as shown in Fig. 7. Therefore, even if the light emitting dials LG and LR are driven and turned on based on this pulse, it is difficult to recognize them with the naked eye. For this reason, the lighting time is widened by the capacitors CI and C 2, making it easier to see the lighting state.
- the polarity can be easily determined by the blinking of the two light emitting disks LG and LR by detecting the direction of the signal pulse.
- FIG. 9 is a diagram showing the connection relationship with the HUB 40 when a simple operation test is performed by the LAN tester 1 of the present invention
- FIG. 10 is an operation example in the simple operation test by the LAN tester of the present invention. This is a diagram in which the main parts of Fig. 1 are extracted for explanation.
- the bipolar transistors Q 3 are off, so the bipolar transistors Q 2 and Q 4 are in the active state.
- the switch SW1 (2 b part) is connected to the terminal SB.
- the pilot data monitoring function works, so the LAN tester 1 shown in Fig. 1 is equivalent to the circuit shown in Fig. 10 (a).
- C Furthermore, it is shown in Fig. 10 (b).
- the terminal RA and the terminal SA and the terminal RB and the terminal SB are connected for folding back by turning on the switch SW2.
- the HUB when the LAN tester 1 of the present invention is connected to the HUB, the HUB outputs the signal voltage that becomes the response data again to the transmission line based on the folded signal. Therefore, as with the operation example of the communication monitor described above, a simple operation test can be performed by checking the PART and LI NK of the HUB 40 and by blinking each light emitting side LG and LR irregularly. It can be carried out.
- the RZL ramp of the AU I lights up and the light emitting dials LG and LR blink irregularly. A simple operation test can be performed.
- connection test with the device and the simple operation test can perform the function simply by folding back the signal line.
- the LAN tester detects the signal in the wiring, determines its presence and polarity, and performs a simulated operation test by folding back the display part by the light emitting dial, so that the HUB and AU can be used.
- the continuity test of the cable alone is limited to those having a pulse transformer forming a DC loop in the HUB or AU I.
- Fig. 11 is a diagram showing a configuration example when performing a confirmation test for the presence or absence of incorrect wiring of a general-purpose 8-pin modular jack used for LAN wiring, for example.
- the LAN tester is provided with, for example, a plurality of reverse connection confirmation circuits 12 a, 121) that are conductively connected to the corresponding receiving terminal of the modular jack.
- Each of the reverse connection confirmation circuits 12 a and 12 b is a reverse connection of the laser disc D 1 1 (D 12) and the light emitting laser disc L D 1 a (L D 2 a).
- One end of the bear signal lines 1 1 1 a and 1 1 b is connected to No. 1 and No. 2 of the modular jack (MJ) 10 to be tested. Also, this pair credit A current based on the DC voltage E a is supplied from the above-mentioned power supply unit 2 to one signal line of the line, for example, the signal line 1 1 a connected to the 1st pin of the MJ 10. Furthermore, a light emitting die LD 1 b that lights up when the power is turned on is inserted and connected between the signal line 1 1 b connected to the 2nd pin of the MJ 10 and the ground line. The above-mentioned reverse connection confirmation circuit 12 a is connected to the other end of these signal lines 1 1 a and lib.
- the pair signal lines 1 1 c and 1 1 d are also connected to the MJ 10 on the 3rd pin and 6th bin. Therefore, as in the case of the pair signal lines 1 1 a and 1 1 b above, a current based on the direct current E b is supplied to the 3rd pin, and the light emitting voltage LD 2 is supplied between the 6th bin and the ground wire.
- the reverse connection confirmation circuit 12 b is connected to the other end of the bare signal lines 1 1 c and 1 1 d.
- the current based on the DC voltages E a and E b is Each is supplied separately from the power source 2 with a different timing. Since a known technique can be used for the power supply timing switching itself, it is not shown here. Further, as the light emitting die LD l b and LD 2 b, the circuit of the current detection unit 3 described above can be used as it is.
- connection direction confirmation test by the LAN tester having the above configuration will be described with reference to Fig. 12 and Fig. 13.
- Fig. 12 (a) is a diagram showing the state when the wiring of M J 10 is normal, that is, when the pair signal lines 1 1 a and 1 1 b are connected in the forward direction.
- the current supplied from the 1st pin of the M J 10 reaches the 2nd bin of the M J 10 through the die D 11 of the reverse connection confirmation circuit 12 a, so that the light emitting die LD 1 a lights up. This makes it possible to visually confirm that the wiring of M J 10 is normal.
- Fig. 12 (b) shows the case where the wiring of MJ 10 is abnormal, that is, the pair signal line. It is a figure which shows the state when 11 a and 1 1 b are reversely connected.
- the current supplied to pin 1 of MJ 10 reaches the reverse connection confirmation circuit 1 2 a from the other signal line 11 b. Therefore, the light emitting laser LD 1 a lights up.
- the current that has passed through the light-emitting laser disc LD 1 a reaches pin 6 of the MJ 10, so the light-emitting laser disc LD 1 b also lights up. Therefore, in this case, it can be visually confirmed that the 1st pin and the 2nd pin of the MJ 10 are connected in reverse.
- Fig. 13 (a) when a current is supplied to pin 3 of MJ 10, the light emitting dial LD 2 a and LD 2 b should light up during normal wiring, but the other light emitting dial LD 1 a , LD 1 b is lit. In this state, as shown in the figure, it means that the wiring in the M J 10 is sequentially shifted upward, so that it is possible to visually recognize that the wiring is incorrect. In addition, as shown in Fig.
- the current detection unit 3 or the reverse connection confirmation circuits 12a and 12b are configured to detect the energized state by using the light emitting timbre, but other current values that flow are displayed on the meter. It may be configured to notify the outside by an object or a sound (timbre or volume).
- the LAN tester can determine whether or not there is a failure such as disconnection in the signal line based on the presence or absence of current detection by the current detection unit, and the forward polarity detection unit and the reverse polarity can be determined. It is possible to confirm whether the signal line has the correct polarity or the opposite polarity depending on the presence or absence of pulse detection by the detection unit.
- a similar signal can be generated by folding back the pulse of the transmission signal line to the reception signal line, and the operating status of the connected HUB or AUI can be confirmed. Furthermore, it is possible to easily confirm incorrect wiring connections.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96925099A EP0784207A4 (en) | 1995-07-26 | 1996-07-26 | LAN EXAMINER |
AU65315/96A AU703954B2 (en) | 1995-07-26 | 1996-07-26 | Lan tester |
CA002200729A CA2200729C (en) | 1995-07-26 | 1996-07-26 | Lan tester |
US08/809,808 US6087835A (en) | 1995-07-26 | 1996-07-26 | LAN tester |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7/189992 | 1995-07-26 | ||
JP18999295 | 1995-07-26 | ||
JP8/132164 | 1996-05-27 | ||
JP13216496A JP3264827B2 (ja) | 1995-07-26 | 1996-05-27 | Lanテスタ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997005494A1 true WO1997005494A1 (en) | 1997-02-13 |
Family
ID=26466795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/002106 WO1997005494A1 (en) | 1995-07-26 | 1996-07-26 | Lan tester |
Country Status (7)
Country | Link |
---|---|
US (1) | US6087835A (ja) |
EP (1) | EP0784207A4 (ja) |
JP (1) | JP3264827B2 (ja) |
KR (1) | KR100258708B1 (ja) |
AU (1) | AU703954B2 (ja) |
CA (1) | CA2200729C (ja) |
WO (1) | WO1997005494A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6480510B1 (en) | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6434716B1 (en) * | 1999-01-29 | 2002-08-13 | Psiber Data Systems Inc. | Network link tester device configured to selectively and automatically couple to a network transmit pair line or a node transmit pair line of a LAN port and determine available operational modes |
US6956826B1 (en) | 1999-07-07 | 2005-10-18 | Serconet Ltd. | Local area network for distributing data communication, sensing and control signals |
US6549616B1 (en) | 2000-03-20 | 2003-04-15 | Serconet Ltd. | Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets |
US6842459B1 (en) | 2000-04-19 | 2005-01-11 | Serconet Ltd. | Network combining wired and non-wired segments |
US6961303B1 (en) | 2000-09-21 | 2005-11-01 | Serconet Ltd. | Telephone communication system and method over local area network wiring |
US6459275B1 (en) * | 2001-02-28 | 2002-10-01 | Avaya Technology Corp. | Detection of devices on a local area network |
JP2002261787A (ja) * | 2001-03-05 | 2002-09-13 | Allied Tereshisu Kk | Lan用信号確認判定装置及びlan用信号確認判定方法並びにlan用信号確認判定プログラム |
US6483318B1 (en) * | 2001-06-29 | 2002-11-19 | Ideal Industries, Inc. | Electric circuit providing selectable short circuit for instrumentation applications |
JP5167568B2 (ja) * | 2001-09-28 | 2013-03-21 | テンパール工業株式会社 | 分電盤の分岐回路接続チェック装置 |
IL152824A (en) | 2002-11-13 | 2012-05-31 | Mosaid Technologies Inc | A socket that can be connected to and the network that uses it |
DE10343723B4 (de) * | 2003-09-22 | 2007-09-27 | Ria-Btr Produktions-Gmbh | Vorrichtung zum Testen der Installation der Anschlussdosen eines ISDN-So-Bussystems |
IL159838A0 (en) | 2004-01-13 | 2004-06-20 | Yehuda Binder | Information device |
US7936671B1 (en) * | 2007-11-12 | 2011-05-03 | Marvell International Ltd. | Cable far end port identification using repeating link state patterns |
JP5704690B2 (ja) * | 2010-11-16 | 2015-04-22 | 九電テクノシステムズ株式会社 | 有線ページングシステムの複合ケーブルの異常検出装置 |
US8447845B1 (en) | 2011-02-10 | 2013-05-21 | Flir Systems, Inc. | Setting a network device to default settings |
JP5505887B2 (ja) * | 2011-09-12 | 2014-05-28 | テンパール工業株式会社 | 分電盤の分岐回路接続チェック装置 |
JP6193575B2 (ja) * | 2013-01-29 | 2017-09-06 | 京セラ株式会社 | エネルギー管理装置、エネルギー管理システム、及びエネルギー管理方法 |
Citations (3)
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JPS5943373A (ja) * | 1982-09-06 | 1984-03-10 | Fujitsu Ltd | 導通試験機 |
JPH0330874U (ja) * | 1989-08-02 | 1991-03-26 | ||
JPH04269668A (ja) * | 1991-02-25 | 1992-09-25 | Matsushita Electric Works Ltd | ツイストペア線の検査装置 |
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US4551671A (en) * | 1983-06-23 | 1985-11-05 | International Business Machines Corp. | Terminal disconnect and media wire fault detect mechanism |
JPS646878A (en) * | 1987-06-30 | 1989-01-11 | Yaskawa Denki Seisakusho Kk | Differential digital transmission line |
CA1315858C (en) * | 1987-10-30 | 1993-04-06 | David Douglas Clegg | Telecommunications wiring test apparatus and method |
FR2653893B1 (fr) * | 1989-10-26 | 1992-05-22 | Fieau Jean Claude | Dispositif de test d'un bus a deux paires de conducteurs. |
US5257287A (en) * | 1990-02-15 | 1993-10-26 | Advanced Micro Devices, Inc. | Automatic polarity detection and correction method and apparatus employing linkpulses |
US5228072A (en) * | 1991-05-29 | 1993-07-13 | Independent Technologies, Inc. | Multiwire-pair telecommunications test system |
USH1369H (en) * | 1991-07-29 | 1994-11-01 | Verbin; Randolph N. | Cable continuity test apparatus |
US5315597A (en) * | 1992-05-08 | 1994-05-24 | Digital Equipment Corporation | Method and means for automatically detecting and correcting a polarlity error in twisted-pair media |
US5598342A (en) * | 1995-01-31 | 1997-01-28 | The Siemon Company | Cable tester |
-
1996
- 1996-05-27 JP JP13216496A patent/JP3264827B2/ja not_active Expired - Lifetime
- 1996-07-26 EP EP96925099A patent/EP0784207A4/en not_active Ceased
- 1996-07-26 KR KR1019970701568A patent/KR100258708B1/ko not_active IP Right Cessation
- 1996-07-26 US US08/809,808 patent/US6087835A/en not_active Expired - Fee Related
- 1996-07-26 WO PCT/JP1996/002106 patent/WO1997005494A1/ja not_active Application Discontinuation
- 1996-07-26 CA CA002200729A patent/CA2200729C/en not_active Expired - Fee Related
- 1996-07-26 AU AU65315/96A patent/AU703954B2/en not_active Ceased
Patent Citations (3)
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JPS5943373A (ja) * | 1982-09-06 | 1984-03-10 | Fujitsu Ltd | 導通試験機 |
JPH0330874U (ja) * | 1989-08-02 | 1991-03-26 | ||
JPH04269668A (ja) * | 1991-02-25 | 1992-09-25 | Matsushita Electric Works Ltd | ツイストペア線の検査装置 |
Non-Patent Citations (1)
Title |
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See also references of EP0784207A4 * |
Also Published As
Publication number | Publication date |
---|---|
AU703954B2 (en) | 1999-04-01 |
CA2200729C (en) | 2001-10-16 |
US6087835A (en) | 2000-07-11 |
KR100258708B1 (ko) | 2000-06-15 |
CA2200729A1 (en) | 1997-02-13 |
EP0784207A1 (en) | 1997-07-16 |
EP0784207A4 (en) | 2001-08-22 |
KR970705756A (ko) | 1997-10-09 |
AU6531596A (en) | 1997-02-26 |
JPH0996656A (ja) | 1997-04-08 |
JP3264827B2 (ja) | 2002-03-11 |
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