WO1998007097B1 - Serial bus protection - Google Patents
Serial bus protectionInfo
- Publication number
- WO1998007097B1 WO1998007097B1 PCT/US1997/013177 US9713177W WO9807097B1 WO 1998007097 B1 WO1998007097 B1 WO 1998007097B1 US 9713177 W US9713177 W US 9713177W WO 9807097 B1 WO9807097 B1 WO 9807097B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conductors
- control signal
- power
- data communication
- connector
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims abstract 38
- 238000001514 detection method Methods 0.000 claims abstract 8
- 230000001808 coupling Effects 0.000 claims 6
- 238000010168 coupling process Methods 0.000 claims 6
- 238000005859 coupling reaction Methods 0.000 claims 6
- 230000002401 inhibitory effect Effects 0.000 claims 2
- 238000003384 imaging method Methods 0.000 abstract 1
Abstract
A simplified serial data bus provides interconnection between equipment such as computers, imaging apparatus, and consumer electronic devices. The simplified bus utilizes the cable (C) and connectors (P1) of a data bus standard. An apparatus for data communication comprises a connector (S1) for receiving a plurality of signal carrying conductors. A control circuit (U1) is coupled to the connector (S1) for supplying a control signal (102) to one of the plurality of conductors. A detector (200) is coupled to the connector (S1) for detecting a power source (PS) on the one of the plurality of conductors. The control signal (102) is inhibited responsive to detection of the voltage source (PS).
Claims
1. An apparatus for data communication, comprising: a connector (S I ) for receiving a plurality of signal carrying conductors; a control circuit (Ul ) coupled to said connector (S I ) for supplying a control signal ( 102) to an energizing power conductor of said plurality of conductors; and, a detector (200) coupled to said connector (S I ) for detecting a source of power (PS) presence on said energizing power conductor and inhibiting said control signal ( 102) responsive to detection of said source of power (PS).
2. The apparatus for data communication of claim 1 , wherein said detector (200) of said source of power (PS) has a voltage threshold detection value of at least approximately 7 volts .
3. The apparatus for data communication of claim 1 , wherein said connector (S I ) conforms to a standard, said presence of said source of power (PS) being consistent with said standard and said supplying of said control signal ( 102) being inconsistent with said standard.
4. The apparatus for data communication of claim 1 , wherein said one connector (S I ) receives up to 6 conductors which are assigned receptacles numbered between 1 and 6.
5. The apparatus for data communication of claim 4, wherein said energizing power conductor is coupled to receptacle number 1.
6. The apparatus for data communication of claim 1. wherein said detector (200) comprises a voltage sensing device (D3).
7. The apparatus for data communication of claim 6. wherein said voltage sensing device (D3) senses a DC voltage of at least approximately 7 volts.
8. The apparatus for data communication of claim 6. wherein said voltage sensing device (D3) comprises a zener diode.
9. The apparatus for data communication of claim 1 , wherein said coupling of said control signal ( 102) with said energizing power conductor ( 1 ) of said plurality of conductors is inhibited responsive to detection of said source of power (PS).
10. The apparatus for data communication of claim 1. wherein said detector (200) comprises a switch (Q3) for decoupling an output (98) of said control circuit (U l ) responsive to detection of said source of power (PS).
1 1. The apparatus for data communication of claim 10, wherein said switch (Q3) decouples an input control signal (99) to said control circuit (U l ) responsive to detection of said source of power (PS).
12. An apparatus for digital audio and video communication, comprising: a connector for receiving a plurality of signal carrying conductors in accordance with an industry standard; a control circuit (U l ), coupled to said connector (S I ), for supplying a control signal ( 102) to an energizing power conductor ( 1 ), of said plurality of conductors inconsistent with said industry standard; and, a safety circuit (200) coupled to said connector (S I ), for protecting said control circuit (Ul ) from a power source (PS) present on said energizing power conductor ( 1 ), of said plurality of conductors consistent with said industry standard.
13. The apparatus of claim 12. wherein said safety circuit (200) monitors, said energizing power conductor ( 1 ), of said plurality of conductors for a presence of said power source (PS) and interrupts said supplying of said control signal ( 102) responsive to detection of said power source (PS).
14. The apparatus of claim 13, wherein said safety circuit (200) interrupts said supplying of said control signal by decoupling said control signal ( 102) from said energizing power conductor ( 1 ), of said plurality of conductors.
15. The apparatus of claim 14, wherein said safety circuit (200) interrupts coupling between said energizing power conductor ( 1 ), of said plurality of conductors and an input terminal (CONTROL BUS IN) of said control circuit (U l ).
16. A method for protecting an apparatus coupled to a plurality of conductors for data communication, said method comprising the steps of: receiving said plurality of signal carrying conductors in a connector (SI ); coupling a control circuit (Ul ) to said connector (S I ), for supplying a control signal ( 102), to a power conductor of said plurality of conductors; monitoring said power conductor ( 1 ), for the presence of a power source (PS); and, interrupting said supplying of said control signal (102), responsive to detection of said power source (PS).
17. The method of claim 16, comprising the step of interrupting said supplying of said control signal ( 102) by decoupling said control signal ( 102) from said power conductor ( 1 ), of said plurality of conductors.
18. The method of claim 16, comprising the step of interrupting said supplying of said control signal ( 102) by inhibiting generation of said control signal ( 102).
19. The method of claim 16, comprising the step of: interrupting coupling between an output terminal (CONTROL BUS OUT) of said control circuit (Ul ) and said power conductor ( 1 ), of said plurality of conductors.
20. The method of claim 16, comprising the step of: interrupting coupling between said power conductor ( 1 ) of said plurality of conductors and an input terminal (CONTROL BUS IN) of said control circuit (U l ).
21. A method for utilizing a conductor in plurality of conductors having signals assigned thereto, said method comprising the steps of: monitoring a conductor ( 1 ) in said plurality of conductors ( 1 - 6) for a presence of an assigned signal (PS); coupling a control circuit (U l ) to said conductor ( 1 ), and supplying a control signal ( 102) thereto; and, interrupting said supplying of said control signal ( 102). responsive to a detected presence of said assigned signal (PS).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50976298A JP2000516365A (en) | 1996-08-08 | 1997-07-28 | Data bus protection device |
| AU38155/97A AU3815597A (en) | 1996-08-08 | 1997-07-28 | Serial bus protection |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/693,523 US5948085A (en) | 1996-08-08 | 1996-08-08 | Bus voltage detection and protection |
| US08/693,523 | 1996-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998007097A1 WO1998007097A1 (en) | 1998-02-19 |
| WO1998007097B1 true WO1998007097B1 (en) | 1998-03-19 |
Family
ID=24785021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/013177 WO1998007097A1 (en) | 1996-08-08 | 1997-07-28 | Serial bus protection |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5948085A (en) |
| JP (1) | JP2000516365A (en) |
| KR (1) | KR100447295B1 (en) |
| CN (1) | CN1120427C (en) |
| AU (1) | AU3815597A (en) |
| WO (1) | WO1998007097A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167321A (en) * | 1998-06-25 | 2000-12-26 | Qlogic Corporation | Interface module with protection circuit and method of protecting an interface |
| JP4372244B2 (en) * | 1998-10-26 | 2009-11-25 | 富士通マイクロエレクトロニクス株式会社 | Interface circuit power control method, interface circuit, and data transfer device |
| US6636922B1 (en) * | 1999-03-17 | 2003-10-21 | Adaptec, Inc. | Methods and apparatus for implementing a host side advanced serial protocol |
| GB2394152B (en) * | 2002-10-09 | 2005-11-02 | Nokia Corp | DMA Detection |
| JP3756882B2 (en) | 2003-02-20 | 2006-03-15 | 株式会社東芝 | Information processing apparatus and information processing method |
| EP1678623B1 (en) * | 2003-08-22 | 2008-10-22 | 4Links Limited | Communication system using embedded synchronisation |
| GB0319756D0 (en) * | 2003-08-22 | 2003-09-24 | 4Links Ltd | An alternative data-recovery method for spacewire and improved distribution of timecodes |
| US7630184B2 (en) * | 2006-09-25 | 2009-12-08 | Agere Systems Inc. | Method and apparatus for an over-voltage detection circuit |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4016458A (en) * | 1975-01-23 | 1977-04-05 | Jerrold Electronics Corporation | Radio frequency distribution network standby power system with overvoltage protection |
| US4075504A (en) * | 1977-05-19 | 1978-02-21 | Basler Electric Company | Power supply apparatus |
| US4153924A (en) * | 1977-10-12 | 1979-05-08 | Mcgraw-Edison Company | Inrush current restraint circuit for alternating power system switch |
| US4347602A (en) * | 1978-05-31 | 1982-08-31 | Vdo Adolf Schindling Ag | Circuit arrangement for time division multiplex data transmission with a bus system |
| US4296450A (en) * | 1979-10-05 | 1981-10-20 | The United States Of America As Represented By The Secretary Of The Interior | Discriminating circuit breaker protection system direct current power distribution systems |
| US4455534A (en) * | 1981-10-30 | 1984-06-19 | Motorola, Inc. | Multi-state control circuitry |
| JPH0614303B2 (en) * | 1984-01-19 | 1994-02-23 | シャープ株式会社 | Power on / off control circuit |
| US4704599A (en) * | 1984-06-20 | 1987-11-03 | Kimmel Arthur T | Auxiliary power connector and communication channel control circuit |
| US4835737A (en) * | 1986-07-21 | 1989-05-30 | American Telephone And Telegraph Company, At&T Bell Laboratories | Method and apparatus for controlled removal and insertion of circuit modules |
| US4924412A (en) * | 1987-06-25 | 1990-05-08 | Schlumberger Industries, Inc. | Integrated poly-phase power meter |
| JPH03147161A (en) * | 1989-11-02 | 1991-06-24 | Mitsubishi Electric Corp | Portable semiconductor memory device |
| GB9011700D0 (en) * | 1990-05-25 | 1990-07-18 | Inmos Ltd | Communication interface |
| US5291545A (en) * | 1990-10-02 | 1994-03-01 | Intertex Data Ab | Apparatus and method for determining the state of a telephone line |
| US5297014A (en) * | 1991-01-09 | 1994-03-22 | Canon Kabushiki Kaisha | Switching DC power supply apparatus |
| WO1993015459A1 (en) * | 1992-02-03 | 1993-08-05 | Micro Industries | Live insertion of computer modules |
| JPH05251800A (en) * | 1992-03-09 | 1993-09-28 | Nec Corp | He-ne laser power supply |
| US5359594A (en) * | 1992-05-15 | 1994-10-25 | International Business Machines Corporation | Power-saving full duplex nodal communications systems |
| US5414378A (en) * | 1992-06-04 | 1995-05-09 | Motorola, Inc. | Method of detecting voltage transients |
| US5485488A (en) * | 1994-03-29 | 1996-01-16 | Apple Computer, Inc. | Circuit and method for twisted pair current source driver |
| US5606482A (en) * | 1995-04-14 | 1997-02-25 | Lucent Technologies Inc. | Solid state circuit breaker |
| US5781051A (en) * | 1996-07-26 | 1998-07-14 | Exel Microelectronics, Inc. | Power-up detector for low power systems |
-
1996
- 1996-08-08 US US08/693,523 patent/US5948085A/en not_active Expired - Lifetime
-
1997
- 1997-07-28 AU AU38155/97A patent/AU3815597A/en not_active Abandoned
- 1997-07-28 WO PCT/US1997/013177 patent/WO1998007097A1/en active IP Right Grant
- 1997-07-28 CN CN97198462A patent/CN1120427C/en not_active Expired - Lifetime
- 1997-07-28 KR KR10-1999-7000945A patent/KR100447295B1/en not_active IP Right Cessation
- 1997-07-28 JP JP50976298A patent/JP2000516365A/en not_active Ceased
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