-
公开(公告)号：DE102008046308A1
公开(公告)日：2009-03-19
申请号：DE102008046308
申请日：2008-09-09
Applicant: INFINEON TECHNOLOGIES AG
Inventor： CLARA MARTIN , FLEISCHHACKER CHRISTIAN , KLATZER WOLFGANG , THELESKLAV TINA
IPC: H04L25/03
Abstract: Embodiments related to echo compensation have been described and depicted.
-
2.发明专利
公开(公告)号：DE10053914A1
公开(公告)日：2002-05-23
申请号：DE10053914
申请日：2000-10-31
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WIESBAUER ANDREAS , CLARA MARTIN , WEINBERGER HUBERT , FLEISCHHACKER CHRISTIAN
Abstract: The digital to analog convertor converts a digital input signal into an analog output signal. The D/A convertor (1) has a signal input (2) for the digital input signal. A reference current source (7) generates a reference current whose amplitude can be adjusted by a setting terminal (4) of the DAC (1). A current mirror circuit reflects the generated reference current by a corresponding ratio into a reflected current. A controllable switch device switches the reflected current in dependence on the input signal, through to a current summing node to generate a summed current. A current to voltage convertor (17) converts the summed current to a corresponding voltage which is output as an analog signal.
-
公开(公告)号：DE10246776A1
公开(公告)日：2004-05-19
申请号：DE10246776
申请日：2002-10-07
Applicant: INFINEON TECHNOLOGIES AG
Inventor： BERTELLE GENESIA , FLEISCHHACKER CHRISTIAN , CLARA MARTIN , WEINBERGER HUBERT , POETSCHER THOMAS
Abstract: A broadband signal amplifier comprises a signal input (2), an operational amplifier (11), two capacitors (5,17) and a signal outlet (14) connected to the amplifier. The potential node (8) for working point adjustment of the amplifier is connected through a resistance (22) to a reference node (23) of constant voltage. An Independent claim is also included for an amplifier as above having an active mean voltage regulation circuit.
-
公开(公告)号：DE10247208A1
公开(公告)日：2004-04-22
申请号：DE10247208
申请日：2002-10-10
Applicant: INFINEON TECHNOLOGIES AG
Inventor： FLEISCHHACKER CHRISTIAN
Abstract: A bridge circuit for echo suppression for a reception signal (c) of a communication device connected to a transmission path is designed so that during balancing/adjusting of the bridge circuit to the transmission signal component, the reception signal (b) is echo-suppressed with the suppressed transmission signal component, resulting from the transmission signal, picked off. For balancing the bridge circuit a variable simulating device (8) is provided for simulating at least one circuit section (Z5) of at least one bridge branch and with which at least one bridge branch is interconnected. An Independent claim is included for a communication device.
-
公开(公告)号：DE10053914C2
公开(公告)日：2003-05-22
申请号：DE10053914
申请日：2000-10-31
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WIESBAUER ANDREAS , CLARA MARTIN , WEINBERGER HUBERT , FLEISCHHACKER CHRISTIAN
Abstract: Digital/analog converter with programmable gain for converting a digital input signal (Dn) into an analog output signal, the digital/analog converter (1) having:a signal input (2) for applying the digital input signal (Dn)a reference current source (7) for generating a reference current (Irefphi), the current intensity of the reference current output by the reference current source (7) being adjustable via a setting terminal (4) of the digital/analog converter (1)current mirror circuits which mirror the generated reference current (Iref) with an associated current mirror ratio to form mirror currentsa controllable switching device (57), which switches through the mirror currents output by the current mirror circuits, in a manner dependent on the digital input signal (Dn) present at the signal input (2), to a summation current node (62) for generating a summation current (Isum) anda current/voltage converter (17) for converting the generated summation current (Isum) into a corresponding voltage (UA), which is output as an analog output signal via an analog signal output (3) of the digital/analog converter (1).
-
Patent Agency Ranking
公开(公告)号：DE50212574D1
公开(公告)日：2008-09-11
申请号：DE50212574
申请日：2002-04-24
Applicant: INFINEON TECHNOLOGIES AG
Inventor： FLEISCHHACKER CHRISTIAN , LABATE FRANCESCO , WEINBERGER HUBERT , KODER GUENTER , STABER MICHAEL
IPC: H03H11/04
Abstract: An adjustable filter, particularly for use as an antialiasing filter in digital telecommunications networks, includes adjustable capacitors which determine frequency response for the purpose of accurate alignment with a particular cut-off frequency. The active filter includes, in line with the invention, a control device with a measuring device for ascertaining the actual cut-off frequency of the filter. On the basis of the ascertained actual cut-off frequency of the filter and the information about the nominal cut-off frequency which is to be set, an adjustment parameter for the adjustable capacitor is selected from a memory arrangement. This adjustment parameter is used to adjust the adjustable capacitor such that the desired nominal cut-off frequency is obtained and, at the same time, the alignment is performed to achieve the nominal cut-off frequency with sufficient accuracy.
-
公开(公告)号：DE10130153A1
公开(公告)日：2002-08-29
申请号：DE10130153
申请日：2001-06-22
Applicant: INFINEON TECHNOLOGIES AG
Inventor： PORAT BOAZ , FLEISCHHACKER CHRISTIAN , STABER MICHAEL , WEINBERGER HUBERT
Abstract: An xDSL data transfer system for data transfer comprising at least one xDSL user modem (4) connected via a data transfer medium (8) to a corresponding xDSL modem (9) within a central office, wherein the xDSL user modem (4) generates a pulse length modulated wake-up signal for switching the corresponding xDSL modem (9) within the central office (10) from a sleep mode to an operation mode.
-
公开(公告)号：DE10050336C1
公开(公告)日：2002-07-25
申请号：DE10050336
申请日：2000-10-11
Applicant: INFINEON TECHNOLOGIES AG
Inventor： PESSL PETER , GIANDOMENICO ANTONIO DI , FLEISCHHACKER CHRISTIAN
Abstract: The echo compensation filter has a signal input (13) receiving the transmission signal provided by the transceiver coupled via an input resistance (36) to an operational amplifier (39), coupled at its output to an output resistance (43). A first programmable resistance circuit (48) is connected between the output and the input of the operational amplifier, a second programmable resistance circuit (51) connected between the output resistance and the output of the echo compensation filter and a third programmable resistance circuit (55) connected between the first programmable resistance circuit and the filter output. Each programmable resistance circuit has a number of parallel resistors and associated controlled switches. An Independent claim for a transceiver with a programmable echo compensation filter is also included.
-
公开(公告)号：DE10130153B4
公开(公告)日：2006-10-19
申请号：DE10130153
申请日：2001-06-22
Applicant: INFINEON TECHNOLOGIES AG
Inventor： PORAT BOAZ , FLEISCHHACKER CHRISTIAN , STABER MICHAEL , WEINBERGER HUBERT
Abstract: An xDSL data transfer system for data transfer includes at least one xDSL user modem connected via a data transfer medium to a corresponding xDSL modem within a central office, in which the xDSL user modem generates a pulse length modulated wake-up signal for switching the corresponding xDSL modem within the central office from a sleep mode to an operation mode.
-
公开(公告)号：DE10308946B4
公开(公告)日：2006-02-16
申请号：DE10308946
申请日：2003-02-28
Applicant: INFINEON TECHNOLOGIES AG
Inventor： GIOTTA DARIO , POETSCHER THOMAS , FERIANZ THOMAS , WIESBAUER ANDREAS , KOBAN RUEDIGER , FLEISCHHACKER CHRISTIAN
Abstract: The signal (Vi) is coupled into the input (2), producing a line (4) signal (Vo) at the output (3). A digital amplifier (6) produces a pulse-width-modulated signal (Vd, id) from the input signal (Vi) or a superimposed signal (Vs). An analog amplifier (5) produces an analog signal (Ve', ia) at the output side from (Vi) or (Vs). The output sides of the amplifiers (5, 6) are so coupled, that through superimposition of the analog signal with the digital signal, the driven signal (Vo) results. Amplification of the analog amplifier is so matched with that of the digital amplifier, that dispersion and/or harmonic oscillations on the digital signal are at least reduced, after superimposition.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.021 seconds)
