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    METHOD AND DEVICE FOR HOLDING LINE POWERED CODEC IN OFF- HOOK STATE THROUGH LOW POWER STATE BETWEEN LINE POWERED CODEC AND CALL BRIDGE
    1.
    发明专利
    METHOD AND DEVICE FOR HOLDING LINE POWERED CODEC IN OFF- HOOK STATE THROUGH LOW POWER STATE BETWEEN LINE POWERED CODEC AND CALL BRIDGE 失效

    公开(公告)号：JP2001203804A

    公开(公告)日：2001-07-27

    申请号：JP2000309804

    申请日：2000-10-10

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： JONATHAN HERMAN FISHER ,  DONALD RAYMOND RATORERU ,  RENE A SMITH ,  TOTH MICHAEL S ,  MICHAEL G WILLIAMS

    IPC: H04M1/738 ,  H04M19/00

    Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive and reliable digital access arrangement(DAA), with which power can be partially supplied at least by available line currents provide by various countries. SOLUTION: This DAA adaptively enables operation suitable as the condition guarantee with power supplied from a telephone line, which it satisfies requested conditions related to a number of countries. Concerning a line power codec, register setting such as register setting for specified country, for example, is used for a startup procedure for an international line powered codec, and this is supplied and held with power from the low-voltage side (for example PC or modem side) of the line powered codec. Thus, the programmed state of the line powered codec can be kept even during the low line power state. Therefore, the line powered codec is not always returned into default state by reset caused by power loss within a telephone circuit.

    MAINTAINING AN OFF-HOOK CONDITION IN A LINE POWERED DAA DURING A CALL BRIDGE
    3.
    发明专利
    MAINTAINING AN OFF-HOOK CONDITION IN A LINE POWERED DAA DURING A CALL BRIDGE 未知

    公开(公告)号：CA2322253C

    公开(公告)日：2005-04-19

    申请号：CA2322253

    申请日：2000-10-04

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： WILLIAMS MICHAEL G ,  FISCHER JONATHAN HERMAN ,  SMITH LANE A ,  TOTH MICHAEL S ,  LATURELL DONALD RAYMOND

    IPC: H04M1/738 ,  H04M19/00 ,  H04M11/06 ,  H04L29/12

    Abstract: A line powered data access arrangement (DAA) is disclosed which adaptive ly allows proper operation with power supplied from a telephone line as conditions warrant, while at the same time satisfying the relevant requirements of many countries. In the line powered codec, a startup procedure for the international line powered codec uses register settings, e.g., country-specific register settings, which are powered and maintained from the low voltage side (e.g., from the PC or modem side) of the line powered codec. In this way, even during low line power conditions the programmed state of the line powered codec can be maintained, thus a default condition will not necessarily returned to by the line powered codec upon reset due to a power loss in the telephone line. In another aspect, a charge storage devi ce such as a charge capacitor is charged from a charge pump formed from a differenti al clock signal from the low voltage side. A current and voltage detection module in the line powered codec is always powered from the telephone line. Upon detection of a n off/ hook signal or a power down condition, the current detection module determin es if/when the current and voltage on the telephone line is sufficient to power certain circuits on the line powered codec. If sufficient power is not present, the line powered codec does not power up. However, the line powered codec will power up if sufficient current is detected. In another aspect, a plurality of power rails may be provided. A first power rail may be associated with the line power, a second power rail may be associated with a low voltage side power source, e.g., a charge storage device. A third (and other) power rails may be switchably connected to either the firs t power rail or second power rail as line power conditions and on-hook/off-hook condition s warrant.

    5.
    发明专利
    未知

    公开(公告)号：DE60034197D1

    公开(公告)日：2007-05-16

    申请号：DE60034197

    申请日：2000-10-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FISCHER JONATHAN HERMAN ,  LATURELL DONALD RAYMOND ,  SMITH LANE A ,  TOTH MICHAEL S ,  WILLIAMS MICHAEL G

    IPC: H04M1/738 ,  H04M3/00 ,  H04M19/00 ,  H04M19/08

    Abstract: A line powered data access arrangement (DAA) is disclosed which adaptively allows proper operation with power supplied from a telephone line as conditions warrant, while at the same time satisfying the relevant requirements of many countries. In the line powered codec, a startup procedure for the international line powered codec uses register settings, e.g., country-specific register settings, which are powered and maintained from the low voltage side (e.g., from the PC or modem side) of the line powered codec. In this way, even during low line power conditions the programmed state of the line powered codec can be maintained, thus a default condition will not necessarily returned to by the line powered codec upon reset due to a power loss in the telephone line. In another aspect, a charge storage device such as a charge capacitor is charged from a charge pump formed from a differential clock signal from the low voltage side. A current and voltage detection module in the line powered codec is always powered from the telephone line. Upon detection of an off-hook signal or a power down condition, the current detection module determines if/when the current and voltage on the telephone line is sufficient to power certain circuits on the line powered codec. If sufficient power is not present, the line powered codec does not power up. However, the line powered codec will power up if sufficient current is detected. In another aspect, a plurality of power rails may be provided. A first power rail may be associated with the line power, a second power rail may be associated with a low voltage side power source, e.g., a charge storage device. A third (and other) power rails may be switchably connected to either the first power rail or second power rail as line power conditions and on-hook/off-hook conditions warrant.

    6.
    发明专利
    未知

    公开(公告)号：DE60037230T2

    公开(公告)日：2008-10-09

    申请号：DE60037230

    申请日：2000-10-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FISCHER JONATHAN HERMAN ,  HOLLENBACH KEITH EUGENE ,  LATURELL DONALD RAYMOND ,  SMITH LANE A ,  TOTH MICHAEL S ,  ZHU WEILIN

    IPC: H02J7/00 ,  H04M3/00 ,  H04M1/00 ,  H04M11/00 ,  H04M19/00 ,  H04M19/08

    Abstract: A line powered data access arrangement (DAA) is disclosed which adaptively allows proper operation with power supplied from a telephone line as conditions warrant, while at the same time satisfying the relevant requirements of many countries. In the line powered codec, a startup procedure for the international line powered codec uses register settings, e.g., country-specific register settings, which are powered and maintained from the low voltage side (e.g., from the PC or modem side) of the line powered codec. In this way, even during low line power conditions the programmed state of the line powered codec can be maintained, thus a default condition will not necessarily returned to by the line powered codec upon reset due to a power loss in the telephone line. In another aspect, a charge storage device such as a charge capacitor is charged from a charge pump formed from a differential clock signal from the low voltage side. A current and voltage detection module in the line powered codec is always powered from the telephone line. Upon detection of an off-hook signal or a power down condition, the current detection module determines if/when the current and voltage on the telephone line is sufficient to power certain circuits on the line powered codec. If sufficient power is not present, the line powered codec does not power up. However, the line powered codec will power up if sufficient current is detected. In another aspect, a plurality of power rails may be provided. A first power rail may be associated with the line power, a second power rail may be associated with a low voltage side power source, e.g., a charge storage device. A third (and other) power rails may be switchably connected to either the first power rail or second power rail as line power conditions and on-hook/off-hook conditions warrant.

    MAINTAINING AN OFF-HOOK CONDITION IN A LINE POWERED DAA DURING A CALL BRIDGE
    9.
    发明专利
    MAINTAINING AN OFF-HOOK CONDITION IN A LINE POWERED DAA DURING A CALL BRIDGE 未知

    公开(公告)号：CA2322253A1

    公开(公告)日：2001-04-08

    申请号：CA2322253

    申请日：2000-10-04

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： WILLIAMS MICHAEL G ,  TOTH MICHAEL S ,  SMITH LANE A ,  LATURELL DONALD RAYMOND ,  FISCHER JONATHAN HERMAN

    IPC: H04M1/738 ,  H04M19/00 ,  H04M11/06 ,  H04L29/12

    Abstract: A line powered data access arrangement (DAA) is disclosed which adaptive ly allows proper operation with power supplied from a telephone line as conditions warrant, while at the same time satisfying the relevant requirements of many countries. In the line powered codec, a startup procedure for the international line powered codec uses register settings, e.g., country-specific register settings, which are powered and maintained from the low voltage side (e.g., from the PC or modem side) of the line powered codec. In this way, even during low line power conditions the programmed state of the line powered codec can be maintained, thus a default condition will not necessarily returned to by the line powered codec upon reset due to a power loss in the telephone line. In another aspect, a charge storage devi ce such as a charge capacitor is charged from a charge pump formed from a differenti al clock signal from the low voltage side. A current and voltage detection module in the line powered codec is always powered from the telephone line. Upon detection of a n off hook signal or a power down condition, the current detection module determin es if/when the current and voltage on the telephone line is sufficient to power certain circuits on the line powered codec. If sufficient power is not present, thel ine powered codec does not power up. However, the line powered codec will power up if sufficient current is detected. In another aspect, a plurality of power rails may be provided. A first power rail may be associated with the line power, a second power rail may be associated with a low voltage side power source, e.g., a charge storage device. A third (and other) power rails may be switchably connected to either the firs t power rail or second power rail as line power conditions and on-hook/off-hook condition s warrant.

    10.
    发明专利
    未知

    公开(公告)号：DE60037230D1

    公开(公告)日：2008-01-10

    申请号：DE60037230

    申请日：2000-10-03

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： FISCHER JONATHAN HERMAN ,  HOLLENBACH KEITH EUGENE ,  LATURELL DONALD RAYMOND ,  SMITH LANE A ,  TOTH MICHAEL S ,  ZHU WEILIN

    IPC: H02J7/00 ,  H04M3/00 ,  H04M1/00 ,  H04M11/00 ,  H04M19/00 ,  H04M19/08

    Abstract: A line powered data access arrangement (DAA) is disclosed which adaptively allows proper operation with power supplied from a telephone line as conditions warrant, while at the same time satisfying the relevant requirements of many countries. In the line powered codec, a startup procedure for the international line powered codec uses register settings, e.g., country-specific register settings, which are powered and maintained from the low voltage side (e.g., from the PC or modem side) of the line powered codec. In this way, even during low line power conditions the programmed state of the line powered codec can be maintained, thus a default condition will not necessarily returned to by the line powered codec upon reset due to a power loss in the telephone line. In another aspect, a charge storage device such as a charge capacitor is charged from a charge pump formed from a differential clock signal from the low voltage side. A current and voltage detection module in the line powered codec is always powered from the telephone line. Upon detection of an off-hook signal or a power down condition, the current detection module determines if/when the current and voltage on the telephone line is sufficient to power certain circuits on the line powered codec. If sufficient power is not present, the line powered codec does not power up. However, the line powered codec will power up if sufficient current is detected. In another aspect, a plurality of power rails may be provided. A first power rail may be associated with the line power, a second power rail may be associated with a low voltage side power source, e.g., a charge storage device. A third (and other) power rails may be switchably connected to either the first power rail or second power rail as line power conditions and on-hook/off-hook conditions warrant.

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