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公开(公告)号：JP2000324207A
公开(公告)日：2000-11-24
申请号：JP2000117075
申请日：2000-04-18
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RITTER KAI-UWE
Abstract: PROBLEM TO BE SOLVED: To adjust the volume of an alarm tone for a user, while analyzing an environment where a telephone set is placed. SOLUTION: This telephone set 10 generates sound and receives the reflected sound. A processor 11 measures characteristics of the reflected sound, such as amplitude and/or delay to decide a kind of an environment where the telephone set 10 is placed. Then the volume of an alarm tone for a user is adjusted on the basis of the kind of the environment shown in the characteristics of the reflected sound. For example, when one of characteristics indicates that the telephone set 10 is placed in an enclosed environment such as a brief case, the volume is adjusted to a high level, and when the other characteristics shows that the telephone set 10 is placed in an open environment such as on a desk, the volume is adjusted to a low level.
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公开(公告)号：JP2001186059A
公开(公告)日：2001-07-06
申请号：JP2000341242
申请日：2000-11-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RITTER KAI-UWE
Abstract: PROBLEM TO BE SOLVED: To provide a transmitter/receiver for a base station of a mobile wireless network and to provide a method that conducts frequency hopping in a link to which an electromagnetic signal is transmitted. SOLUTION: The transmitter/receiver for an electromagnetic signal uses two hybrid couplers and/or broadband couplers to combine signals sent from 4 transmitters. The broadband coupler is provided with two filters that confirm a frequency range and each transmitter can transmit a signal within an assigned frequency range. The filter especially accommodates a plurality of frequency channels and then can conduct synthesizer hopping. Moreover, the method combining the synthesizer hopping with the base band hopping especially has advantages in the transmitter/receiver of this invention so as to ensures effective utilization of channels.
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公开(公告)号：DE60031775T2
公开(公告)日：2007-09-20
申请号：DE60031775
申请日：2000-08-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOUBRAVA MICHAEL , RITTER KAI-UWE
IPC: H04B1/04
Abstract: Transmission and reception device for a mobile radio base station comprising a plurality of transmission and reception units and hence a plurality of carriers, the transmission and reception units being accommodated in push-in modules and each having a modulator (10), a channel frequency device (19) and an output stage (20). At least some of the push-in modules comprise two full transmission and reception units having a first and a second transmission branch (1, 2). The two transmission branches (1, 2) are connected to a transmission connection (4) via an incorporated hybrid combiner (3) in order to provide two mutually combined carriers in a first mode of operation for relatively high capacity. In a second mode of operation for high output power, the two transmission branches (1, 2) are additionally connected to one another by means of an internal changeover device (25, 26, 27) such that the same transmitted signal is routed at least via the output stages (20) of both transmission branches (1, 2).
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公开(公告)号：DE602004000320D1
公开(公告)日：2006-04-06
申请号：DE602004000320
申请日：2004-04-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： FISCHER GEORG , RITTER KAI-UWE
IPC: H03D7/00 , H04B1/30 , H03D3/00 , H04B1/26 , H04B7/155 , H04L27/20 , H04L27/22 , H04L27/36 , H04L27/38
Abstract: In a telecommunications transmitter and receiver two IQ-mixers are operated in 180 degrees phase shift. In both the transmitter and receiver, an input signal is coupled to each IQ-mixer and the output signal of the mixers are combined so as to cancel unwanted error components in each individual output signal. In the transmitter, residual carrier signals are cancelled, and in the receiver, DC-offsets are cancelled. In both, the wanted signals are added, doubling the amplitude of the resultant output signal leading to four times more output power and improved dynamic range.
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公开(公告)号：AU2770500A
公开(公告)日：2000-10-26
申请号：AU2770500
申请日：2000-04-12
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RITTER KAI-UWE
Abstract: A processor (25) may include a microprocessor (11) or digital signal processor (DSP) (12) and, when a telephone (10) receives a call, the microprocessor instructs the DSP to analyze the environment to determine if the telephone is in a briefcase, pocket. The microprocessor then generates a control signal to activate a ringer (19) to alert the user and ensure the ringer is audible. The DSP generates digital measuring signals which are emitted as acoustic signals by a speaker (15), while reflected response signals are received by a microphone (18), converted into analog signals and fed to the DSP. An independent claim is included for a volume control device.
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Patent Agency Ranking
公开(公告)号：DE60108944D1
公开(公告)日：2005-03-24
申请号：DE60108944
申请日：2001-04-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BOGNER NORBERT , RITTER KAI-UWE , SCHENKEL HORST
Abstract: The application relates to transmission power control in transmission systems, in particular mobile radio systems. One object of the invention is to indicate a way of guaranteeing, compared with the state of the art, improved, in particular dynamic, control of transmission powers within predefinable emitted interference requirements with, in particular, increased efficiency and reduced power consumption. For this purpose, the invention provides for the filtering of an amplified transmission signal to be divided up between a narrower-band tunable pre-filter (4) and a broadband post-filter (10). To perform this operation, a signal-amplification circuit is proposed which comprises a tunable filter (4) which is connected downstream of a power amplifier (2).
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公开(公告)号：CA2350354A1
公开(公告)日：2002-02-21
申请号：CA2350354
申请日：2001-06-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOUBRAVA MICHAEL , RITTER KAI-UWE
Abstract: Transmission and reception device for a mobile radio base station comprising a plurality of transmission and reception units and hence a plurality of carriers, the transmission and reception units being accommodated in push-in modules and each having a modulator (10), a channel frequency device (19) and an output stage (20). At least some of the push-in modules comprise two full transmission and reception units having a first and a second transmission branch (1, 2). The two transmission branches (1, 2) are connected to a transmission connection (4) via an incorporated hybrid combiner (3) in order to provide two mutually combined carriers in a first mode of operation for relatively high capacity. In a second mode of operation for high output power, the two transmission branches (1, 2) are additionally connected to one another by means of an internal changeover device (25, 26, 27) such that the same transmitted signal is routed at least via the output stages (20) of both transmission branches (1, 2).
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公开(公告)号：CA2303719A1
公开(公告)日：2000-10-19
申请号：CA2303719
申请日：2000-04-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RITTER KAI-UWE
Abstract: An apparatus and method for controlling the volume of a device's user alert sound based on an analysis of the device's environment. The device (20) emits a signal and receives a resulting reflected signal. A processor (25) measures characteristics such as the amplitude and/or delay of the reflected signal to determine the type of environment in which the communication device (20) is located. The volume of the alert sound is then adjusted based on the type of environment indicted by the characteristics of the reflected signal. For example, if the characteristics indicate a closed environment such as a brief case, the volume is adjusted to a high level, and if the characteristics indicate an open environment such as a desk top, the volume is adjusted to a low level.
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公开(公告)号：DE60108944T2
公开(公告)日：2006-03-16
申请号：DE60108944
申请日：2001-04-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BOGNER NORBERT , RITTER KAI-UWE , SCHENKEL HORST
Abstract: The application relates to transmission power control in transmission systems, in particular mobile radio systems. One object of the invention is to indicate a way of guaranteeing, compared with the state of the art, improved, in particular dynamic, control of transmission powers within predefinable emitted interference requirements with, in particular, increased efficiency and reduced power consumption. For this purpose, the invention provides for the filtering of an amplified transmission signal to be divided up between a narrower-band tunable pre-filter (4) and a broadband post-filter (10). To perform this operation, a signal-amplification circuit is proposed which comprises a tunable filter (4) which is connected downstream of a power amplifier (2).
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公开(公告)号：BR0005125A
公开(公告)日：2001-06-19
申请号：BR0005125
申请日：2000-10-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RITTER KAI-UWE
Abstract: The invention relates to a transmitting/receiving apparatus for electromagnetic signals which combines signals transmitted by four transmitters by means of two hybrid and/or broadband combiners. The broadband combiners comprise two filters which define frequency ranges within which the respectively assigned transmitters can transmit. The filters cover in particular a plurality of frequency channels, with the result that synthesizer hopping is possible. The invention furthermore relates to a method for combined synthesizer and baseband hopping which is particularly advantageous for the apparatus according to the invention in order to ensure effective channel utilization.
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