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21.发明专利
公开(公告)号：CA2314400A1
公开(公告)日：2001-01-29
申请号：CA2314400
申请日：2000-07-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN , MUJTABA SYED AON
Abstract: Two or more digital signals are encoded using two or more respective li ne codes. The line codes are chosen in conjunction with the data rates of the digital signals such that the encoded signals are substantially orthogonal to each other in the frequency domain. As such, the two or more encoded signals may be combin ed and transmitted via a single physical medium with little or no interference. A transmitter for encoding and transmitting the digital signals contains line coders for encoding the digital signals and a combiner for combining the encoded signal s for transmission via a single physical medium. A receiver for receiving and decoding the combined encoded signal contains filters for extracting the individual encoded signals and line decoders for decoding the individual encoded signals to generate the original digital data signals.
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公开(公告)号：GB2323756B
公开(公告)日：1999-04-07
申请号：GB9802755
申请日：1998-02-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN , RUDNICK ROBERT
IPC: G06F3/00 , H03K19/0175 , H04L12/40 , H04L25/02 , G06F13/40
Abstract: Embodiments of the invention include a method and arrangement of integrated circuit components for enhancing the integrity of communication signals transmitted through a multi-device communication system. Embodiments of the invention provide controllable impedance arrangements for coupling to one or more integrated circuit components coupled along a bus transmission line within the communications system. The coupled impedance arrangements establish damping impedances for selected devices between the signal transmitting component and the signal receiving component along the bus transmission line to advantageously reduce distortion and ringing associated with the LC parasitic network behavior of the devices. Typically, a damping impedance is coupled to the integrated circuit component immediately adjacent to the signal transmitting component along the bus transmission line between the signal transmitting component and the signal receiving component. Alternatively, other integrated circuit components between the signal transmitting component and the signal receiving component have damping impedances coupled thereto in addition to or instead of the integrated circuit component adjacent to the signal transmitting component. According to an embodiment of the invention, the controllable damping impedance arrangements are on-chip and off-chip configurations of switchable impedance elements that when actuated couple the necessary impedance to the characteristic capacitance and associated inductance of selected integrated circuit components. The damping impedance arrangements are controlled by a controller operably coupled to the arrangement or by other suitable means. Implementation of the damping impedance arrangements advantageously improves the integrity of signals transmitted along the bus transmission line and reduces ringing without unnecessarily increasing power dissipation and/or driving power requirements of the signal transmitting components within the communications system.
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公开(公告)号：DE69733392T2
公开(公告)日：2006-04-27
申请号：DE69733392
申请日：1997-09-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN , MORRIS BERNARD LEE
Abstract: A communication system (100) having communicating devices (101-106) coupled to a closed loop bus (110) substantially reduces interconnect distances and corresponding signal propagation delays between the devices. Particular devices possess switchable impedance elements that can be selectively actuated to produce an effective terminating impedance substantially at a midpoint position along the closed loop from the coupling point of a transmission device. In such an arrangement, the produced effective terminating impedance would cause the signal transmitted by the transmission device to propagate to a destination device substantially without signal degradation due to signal reflections.
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公开(公告)号：BR0101967A
公开(公告)日：2002-01-02
申请号：BR0101967
申请日：2001-05-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN , MUJTABA SYED AON
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公开(公告)号：GB2323756A
公开(公告)日：1998-09-30
申请号：GB9802755
申请日：1998-02-10
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN , RUDNICK ROBERT
IPC: G06F3/00 , H03K19/0175 , H04L12/40 , H04L25/02 , G06F13/40
Abstract: Controllable impedance arrangements (60) are provided for coupling to one or more integrated circuit components 20a-20f coupled along a bus transmission line (24) within a communications system, to establish damping impedances for selected devices between the signal transmitting component and the signal receiving component along the bus transmission line to advantageously reduce distortion and ringing associated with the LC parasitic network behavior of the devices. Typically, a damping impedance is coupled to the integrated circuit component immediately adjacent to the signal transmitting component along the bus. Alternatively, other integrated circuit components between the signal transmitting component and the signal receiving component have damping impedances coupled thereto in addition to or instead of the integrated circuit component adjacent to the signal transmitting component. The controllable damping impedance arrangements are on-chip or off-chip configurations of switchable impedance elements that, when actuated, couple the necessary impedance to the characteristic capacitance and associated inductance of selected integrated circuit components. The damping impedance arrangements are controlled by a controller 72 operably coupled to the arrangement or by other suitable means. Implementation of the damping impedance arrangements advantageously improves the integrity of signals transmitted along the bus transmission line and reduces ringing without unnecessarily increasing power dissipation and/or driving power requirements of the signal transmitting components within the communications system.
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Patent Agency Ranking
公开(公告)号：DE69737731D1
公开(公告)日：2007-06-28
申请号：DE69737731
申请日：1997-06-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN
IPC: H03K19/0175 , H04L25/02 , H03K19/00
Abstract: A controllable impedance arrangement (110) is used in an adaptable input-output port (100,150) of an integrated circuit configuration (101,151) to enable the port to advantageously adapt its impedance according to whether its transmitting or receiving a communication signal. The controllable impedance arrangement (110) provides different specific impedances (120,125,130) for transmitting signals at respective signal levels, or a terminating impedance when receiving a data signal. This impedance arrangement (110) enables the input-output port and corresponding integrated circuit to have compact dimensions relative to conventional integrated circuits.
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公开(公告)号：DE69828226D1
公开(公告)日：2005-01-27
申请号：DE69828226
申请日：1998-07-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN
Abstract: A novel latch circuit configuration (100) that substantially reduces inverter-based setup and hold times includes first and second input switches (140, 145) connected to an effective sense amplifier configuration. It is possible for the input switches to receive complimentary signals of a balanced input signal. The latch circuit operates in initialization and output modes based on the signal level of an alternating clock signal. The output mode produces an output signal having a first or second signal magnitude based on the magnitude of the input signal at the end of the initialization mode. Also, disclosed is a high-speed serial-to-parallel converter based on this latch circuit.
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公开(公告)号：CA2342411A1
公开(公告)日：2001-11-24
申请号：CA2342411
申请日：2001-03-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MUJTABA SYED AON , GABARA THADDEUS JOHN
Abstract: A control technique for a communication system in which a microcell base station is co-located with a macrocell base station. The microcell base station trac ks hot spots as they move within the macrocell. The microcell base station may utilize a two - dimensional (2-D) antenna array, which is co-located with the macro cell antenna. The two-dimensional antenna is steerable in both the horizontal and vertical directions. The size of the microcell coverage area depends upon the distance from the cell site antenna as well as the dimensionality of the array, which determines the angular spread of the beam. Filter tap weights may be adjusted to point the beam to any desired location in the macrocell. The orthogonality between the macrocell and the microcell may be obtained either in the frequency domain or in the code domain, depending upon the system in which it is implemented.
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公开(公告)号：DE69800272T2
公开(公告)日：2001-01-18
申请号：DE69800272
申请日：1998-01-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN
IPC: H01L25/00 , H01L21/822 , H01L27/04 , H01L27/06
Abstract: A controllable magnetic field generator (10) applies a magnetic field to a transistor device (5) at a particular orientation for producing a corresponding Lorentz force (F) on the flow of carriers (11) in the device to advantageously deflect the carriers to facilitate performance of a corresponding desired circuit function. Such a component arrangement is useable in a variety of circuit configurations for performing different circuit functions with a reduced number of devices and complexity relative to conventional circuit configurations. Exemplary circuit configurations for signal mixers, differential amplifiers, switches, and multiplexers and demultiplexers are possible using as little as one or two devices. According to another aspect of the invention, an inductor coil is used for the magnetic field generator and is formed on a substrate (15) containing the transistor device to provide a component arrangement having relatively compact dimensions.
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公开(公告)号：DE69800272D1
公开(公告)日：2000-10-05
申请号：DE69800272
申请日：1998-01-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GABARA THADDEUS JOHN
IPC: H01L25/00 , H01L21/822 , H01L27/04 , H01L27/06
Abstract: A controllable magnetic field generator (10) applies a magnetic field to a transistor device (5) at a particular orientation for producing a corresponding Lorentz force (F) on the flow of carriers (11) in the device to advantageously deflect the carriers to facilitate performance of a corresponding desired circuit function. Such a component arrangement is useable in a variety of circuit configurations for performing different circuit functions with a reduced number of devices and complexity relative to conventional circuit configurations. Exemplary circuit configurations for signal mixers, differential amplifiers, switches, and multiplexers and demultiplexers are possible using as little as one or two devices. According to another aspect of the invention, an inductor coil is used for the magnetic field generator and is formed on a substrate (15) containing the transistor device to provide a component arrangement having relatively compact dimensions.
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