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公开(公告)号：JP2003101595A
公开(公告)日：2003-04-04
申请号：JP2002137541
申请日：2002-05-13
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
IPC: H03K19/0175 , H04B3/04 , H04L25/02 , H04L25/03
Abstract: PROBLEM TO BE SOLVED: To improve a digital line drive circuit in which the maximum transmission length or the maximum rate of a transmission system is restricted the more when the frequency component is higher or the transmission length passing through a medium is longer in the conventional technology, when outputting a digital signal onto a transmission line. SOLUTION: The digital line drive circuit 1, for driving a transmission line constituted so as to receive a digital input signal Di and to output digital output signals based on the digital input signal Di, is able to operate at least in a first mode and a second mode based on a mode selection signal Pe, where the first mode is a signal relay mode in which the digital output signal follows the digital input signal, and the second mode is a pre-emphasis mode in which the digital output signal follows the digital input signal and a given distortion is added to it.
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公开(公告)号：FI114669B
公开(公告)日：2004-11-30
申请号：FI963747
申请日：1996-09-20
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A connecting arrangement includes a number of NMOS transistors that can be activated or deactivated by means of a control voltage, serving as a control signal, connected to the gate terminals of transistors, to be able to form a circuit connected between two conductors, the circuit presenting resistive properties. The circuit is equipped with a signal receiver and it is regulated by an analog control voltage. The control voltage is connectable to one or several of a number of available control connections. Each control connection is connected to the gate terminals of a group of transistors where the drain and source terminals are connected to the conductors. The control voltage is selected so that the operating point of the transistors will be within, or at least close to, the region where the transistor presents resistive properties.
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公开(公告)号：FI114513B
公开(公告)日：2004-10-29
申请号：FI963748
申请日：1996-09-20
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal receiving and signal processing unit connected to one or several conductors is adapted to transmit information-carrying signals in the form of voltage pulses. A conductor is connected to a transistor belonging to a signal receiving circuit, to have an effect upon a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses passing through the transistor. The current is generated by the voltage pulse variations and a voltage level, and the current is adapted to an information-carrying form in a signal processing circuit. The transistor belonging to the signal receiving circuit is coordinated with at least one other transistor to form a current mirror. The ability of the signal receiving circuit to receive, detect, and process the signals is adjustable through a current generating circuit such that an increasing current value provides detection of a voltage pulse at an increased transfer rate and vice versa.
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公开(公告)号：CA2205893C
公开(公告)日：2001-06-26
申请号：CA2205893
申请日：1995-11-09
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: The invention includes a terminating circuit or network (4) which is connect ed to a signal transmission medium in the form of one or two conductors or line s (2, 3) on which information-carrying signals in the form of voltage pulses c an be transmitted, and a impedance-matching circuit (4a) connected to the conductor or conductors. The circuit includes a mean voltage value forming unit which produces a mean voltage value, a control unit which produces adapted reference voltage value, and an impedance-matching transistor which is included in said impedance-matching circuit, wherein said voltage value and said reference voltage value are added together to form a composite control voltage which is applied to the gate-connection of the impedance matching transistor.
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公开(公告)号：NO963928L
公开(公告)日：1996-11-14
申请号：NO963928
申请日：1996-09-19
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal receiving and signal processing unit connected to one or several conductors is adapted to transmit information-carrying signals in the form of voltage pulses. A conductor is connected to a transistor belonging to a signal receiving circuit, to have an effect upon a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses passing through the transistor. The current is generated by the voltage pulse variations and a voltage level, and the current is adapted to an information-carrying form in a signal processing circuit. The transistor belonging to the signal receiving circuit is coordinated with at least one other transistor to form a current mirror. The ability of the signal receiving circuit to receive, detect, and process the signals is adjustable through a current generating circuit such that an increasing current value provides detection of a voltage pulse at an increased transfer rate and vice versa.
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Patent Agency Ranking
公开(公告)号：FI963748A
公开(公告)日：1996-11-14
申请号：FI963748
申请日：1996-09-20
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal receiving and signal processing unit connected to one or several conductors is adapted to transmit information-carrying signals in the form of voltage pulses. A conductor is connected to a transistor belonging to a signal receiving circuit, to have an effect upon a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses passing through the transistor. The current is generated by the voltage pulse variations and a voltage level, and the current is adapted to an information-carrying form in a signal processing circuit. The transistor belonging to the signal receiving circuit is coordinated with at least one other transistor to form a current mirror. The ability of the signal receiving circuit to receive, detect, and process the signals is adjustable through a current generating circuit such that an increasing current value provides detection of a voltage pulse at an increased transfer rate and vice versa.
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公开(公告)号：NO963461A
公开(公告)日：1996-10-18
申请号：NO963461
申请日：1996-08-20
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
CPC classification number: H03F3/45179 , G05F3/267 , H03F3/45076 , H03F2203/45028 , H03F2203/45126 , H03F2203/45176 , H03K5/2481
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公开(公告)号：NO963928D0
公开(公告)日：1996-09-19
申请号：NO963928
申请日：1996-09-19
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal receiving and signal processing unit connected to one or several conductors is adapted to transmit information-carrying signals in the form of voltage pulses. A conductor is connected to a transistor belonging to a signal receiving circuit, to have an effect upon a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses passing through the transistor. The current is generated by the voltage pulse variations and a voltage level, and the current is adapted to an information-carrying form in a signal processing circuit. The transistor belonging to the signal receiving circuit is coordinated with at least one other transistor to form a current mirror. The ability of the signal receiving circuit to receive, detect, and process the signals is adjustable through a current generating circuit such that an increasing current value provides detection of a voltage pulse at an increased transfer rate and vice versa.
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公开(公告)号：FI963256A0
公开(公告)日：1996-08-20
申请号：FI963256
申请日：1996-08-20
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal-receiving and signal-processing unit connected to one or several conductors is configured to transmit information-carrying signals in the form of voltage pulses. The conductor is connected to a transistor in a signal-receiving circuit to affect a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses that pass through the transistor. The current is generated by the voltage pulse variations and voltage level. The current is given a signal-adapted information-carrying form by a signal-processing circuit. The transistor in the signal-receiving circuit is coordinated with at least one other transistor so that together they form a current mirror circuit.
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公开(公告)号：CA2182943A1
公开(公告)日：1995-08-24
申请号：CA2182943
申请日：1995-02-16
Applicant: ERICSSON TELEFON AB L M
Inventor： HEDBERG MATS OLOF JOAKIM
Abstract: A signal-receiving and signal-processing unit connected to one or several conductors is configured to transmit information-carrying signals in the form of voltage pulses. The conductor is connected to a transistor in a signal-receiving circuit to affect a current by using variations in the voltage pulses and the voltage value of a pulse. The current is in the form of pulses that pass through the transistor. The current is generated by the voltage pulse variations and voltage level. The current is given a signal-adapted information-carrying form by a signal-processing circuit. The transistor in the signal-receiving circuit is coordinated with at least one other transistor so that together they form a current mirror circuit.
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