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公开(公告)号：US20180287707A1
公开(公告)日：2018-10-04
申请号：US15478789
申请日：2017-04-04
发明人： Alessandro Cevrero , Daniel M. Kuchta , Christian I. Menolfi , Thomas E. Morf , Ilter Özkaya , Marc A. Seifried
IPC分类号： H04B10/50 , H04Q11/00 , H04B10/508 , H04B10/564
CPC分类号： H04B10/503 , H04B10/508 , H04B10/564 , H04B2210/08 , H04Q11/0003
摘要： Devices and methods are provided to reduce the wake-up time of a Vertical Cavity Surface Emitting Laser (VCSEL) used in a data communication link. For example, in one aspect, a method for optical communications includes, in an optical communication device including a light-emitting device, applying a bias current to the light-emitting device and transmitting a pulse to the light-emitting device before transmitting a preamble signal or data signal to the light-emitting device, wherein the pulse has a voltage greater than a highest voltage of the preamble signal or data signal.
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公开(公告)号：US10720994B2
公开(公告)日：2020-07-21
申请号：US16272497
申请日：2019-02-11
发明人： Alessandro Cevrero , Pier Andrea Francese , Marcel A. Kossel , Christian I. Menolfi , Ilter Özkaya , Thomas H. Toifl
IPC分类号： H04B10/04 , H04B10/50 , H04B10/524 , H03F1/06 , H04L25/49 , H04L25/497
摘要： A system and method for a high-speed transmitter comprising a precoder configured to receive a sequence of input symbols and to generate for each received symbol a respective recoded symbol is disclosed. The transmitter includes a recoding unit configured for recoding each current received PAM-M based on the recoded symbol immediately preceding the current recoded symbol at the recoding unit, a shift unit configured for determining a shift value for each current received symbol from the recoding unit based on the symbol received from the recoding unit and immediately preceding the current symbol at the shift unit; and Feed-Forward Equalizer unit for applying the shift values to the respective symbols received from the recoding unit to generate a corresponding sequence of output symbols to be transmitted in an output stream.
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公开(公告)号：US10516485B2
公开(公告)日：2019-12-24
申请号：US16220782
申请日：2018-12-14
发明人： Alessandro Cevrero , Daniel M. Kuchta , Christian I. Menolfi , Thomas E. Morf , Ilter Özkaya , Marc A. Seifried
IPC分类号： H04B10/00 , H04B10/50 , H04B10/508 , H01S5/062 , H04B10/564 , H04Q11/00 , H01S5/183 , H01S5/00 , H01S5/042
摘要： Devices and methods are provided to reduce the wake-up time of a Vertical Cavity Surface Emitting Laser (VCSEL) used in a data communication link. For example, in one aspect, a method for optical communications includes, in an optical communication device including a light-emitting device, applying a bias current to the light-emitting device and transmitting a pulse to the light-emitting device before transmitting a preamble signal or data signal to the light-emitting device, wherein the pulse has a voltage greater than a highest voltage of the preamble signal or data signal.
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公开(公告)号：US20190342128A1
公开(公告)日：2019-11-07
申请号：US16516296
申请日：2019-07-19
摘要： The present invention relates to a continuous time linear equalizer comprising a first signal path comprising a high pass filter and a first controllable transconductance unit and a second signal path comprising a second controllable transconductance unit. The continuous time linear equalizer comprises a summation node configured to receive complementary current summation signals of the first transconductance unit and the second transconductance unit. The high pass filter comprises a first port configured to receive an input signal, a second port coupled to a control port of the first transconductance unit and a third port coupled to the summation node. The invention is notably also directed to a corresponding method and a corresponding design structure.
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公开(公告)号：US10205525B1
公开(公告)日：2019-02-12
申请号：US15827960
申请日：2017-11-30
发明人： Alessandro Cevrero , Pier Andrea Francese , Marcel A. Kossel , Christian I. Menolfi , Ilter Özkaya , Thomas H. Toifl
IPC分类号： H04B10/04 , H04B10/50 , H04B10/524 , H03F1/06
摘要： A system and method for a high-speed transmitter comprising a precoder configured to receive a sequence of input symbols and to generate for each received symbol a respective recoded symbol is disclosed. The transmitter includes a recoding unit configured for recoding each current received PAM-M based on the recoded symbol immediately preceding the current recoded symbol at the recoding unit, a shift unit configured for determining a shift value for each current received symbol from the recoding unit based on the symbol received from the recoding unit and immediately preceding the current symbol at the shift unit; and Feed-Forward Equalizer unit for applying the shift values to the respective symbols received from the recoding unit to generate a corresponding sequence of output symbols to be transmitted in an output stream.
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公开(公告)号：US10142090B1
公开(公告)日：2018-11-27
申请号：US15702811
申请日：2017-09-13
摘要： Octagonal phase rotator apparatus is provided for producing an output signal that is phase dependent on a digital control code. The apparatus includes an I-mixer, a Q-mixer, and first and second IQ-mixers. The I-mixer is responsive to I-control bits of the digital control code. The Q-mixer is responsive to Q-control bits of the digital control code. The first and second IQ-mixers are respectively responsive to one or more IQ1-control bits and one or more IQ2-control bits of the digital control code. The I-mixer comprises an I-DAC for steering current between a positive phase IP and a negative phase IN of an in-phase (I) signal wherein the one or more I-control bits control switching of a first current unit between IP and IN, and a set of amplifiers for weighting the phases IP and IN, in dependence on current steered to each phase by the I-DAC, to produce a weighted I-signal.
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公开(公告)号：US10673660B2
公开(公告)日：2020-06-02
申请号：US16516296
申请日：2019-07-19
摘要： The present invention relates to a continuous time linear equalizer comprising a first signal path comprising a high pass filter and a first controllable transconductance unit and a second signal path comprising a second controllable transconductance unit. The continuous time linear equalizer comprises a summation node configured to receive complementary current summation signals of the first transconductance unit and the second transconductance unit. The high pass filter comprises a first port configured to receive an input signal, a second port coupled to a control port of the first transconductance unit and a third port coupled to the summation node. The invention is notably also directed to a corresponding method and a corresponding design structure.
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公开(公告)号：US10397027B2
公开(公告)日：2019-08-27
申请号：US15715205
申请日：2017-09-26
摘要： The present invention relates to a continuous time linear equalizer comprising a first signal path comprising a high pass filter and a first controllable transconductance unit and a second signal path comprising a second controllable transconductance unit. The continuous time linear equalizer comprises a summation node configured to receive complementary current summation signals of the first transconductance unit and the second transconductance unit. The high pass filter comprises a first port configured to receive an input signal, a second port coupled to a control port of the first transconductance unit and a third port coupled to the summation node. The invention is notably also directed to a corresponding method and a corresponding design structure.
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公开(公告)号：US20190173586A1
公开(公告)日：2019-06-06
申请号：US16272497
申请日：2019-02-11
发明人： Alessandro Cevrero , Pier Andrea Francese , Marcel A. Kossel , Christian I. Menolfi , Ilter Özkaya , Thomas H. Toifl
IPC分类号： H04B10/50 , H04B10/524 , H03F1/06
摘要： A system and method for a high-speed transmitter comprising a precoder configured to receive a sequence of input symbols and to generate for each received symbol a respective recoded symbol is disclosed. The transmitter includes a recoding unit configured for recoding each current received PAM-M based on the recoded symbol immediately preceding the current recoded symbol at the recoding unit, a shift unit configured for determining a shift value for each current received symbol from the recoding unit based on the symbol received from the recoding unit and immediately preceding the current symbol at the shift unit; and Feed-Forward Equalizer unit for applying the shift values to the respective symbols received from the recoding unit to generate a corresponding sequence of output symbols to be transmitted in an output stream.
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公开(公告)号：US20190123830A1
公开(公告)日：2019-04-25
申请号：US16220782
申请日：2018-12-14
发明人： Alessandro Cevrero , Daniel M. Kuchta , Christian I. Menolfi , Thomas E. Morf , Ilter Özkaya , Marc A. Seifried
IPC分类号： H04B10/50 , H04B10/564 , H04Q11/00 , H04B10/508
CPC分类号： H04B10/503 , H01S5/0014 , H01S5/0428 , H01S5/06216 , H01S5/183 , H04B10/508 , H04B10/564 , H04B2210/08 , H04Q11/0003
摘要： Devices and methods are provided to reduce the wake-up time of a Vertical Cavity Surface Emitting Laser (VCSEL) used in a data communication link. For example, in one aspect, a method for optical communications includes, in an optical communication device including a light-emitting device, applying a bias current to the light-emitting device and transmitting a pulse to the light-emitting device before transmitting a preamble signal or data signal to the light-emitting device, wherein the pulse has a voltage greater than a highest voltage of the preamble signal or data signal.
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