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    • 2. 发明授权
    • Active demarcation point of an access network
    • 接入网络的主动分界点
    • US06320878B1
    • 2001-11-20
    • US08971971
    • 1997-11-17
    • Heinz KrimmelRainer FritschiRolf Heidemann
    • Heinz KrimmelRainer FritschiRolf Heidemann
    • H04J102
    • H04N7/22H04N7/17309
    • In a hybrid fiber/coax access network (NET) with downstream and upstream channels, the upstream channel serves to transmit voice and video signals as well as data signals from groups of customer locations (END) to a subcenter (HUB). A demarcation point (UP) provides the interface between the access network (NET) and the private network of the customer location (END). It contains at least two devices (BP4, BP5, BP6) for frequency-splitting received signals in the upstream frequency band, at least two switches (S4, S5, S6) following the at least two devices (BP4, BP5, BP6) and serving to block or unblock individual upstream frequency ranges, a measuring unit (MESS2) for measuring the amplitudes or intensities of the signals in the split frequency ranges, and a control unit (CTRL) for evaluating the measured values and controlling the at least two switches (S4, S5, S6). For a customer location (END), individual upstream frequency ranges can thus be telemetrically blocked for a limited time. Decentralized and autonomous monitoring of individual upstream frequency ranges is accomplished by a measuring unit which is controlled by the demarcation point (UP) itself.
    • 在具有下行和上行信道的混合光纤/同轴电缆接入网络(NET)中,上行信道用于将语音和视频信号以及从客户位置组(END)的数据信号传输到子中心(HUB)。 分界点(UP)提供访问网络(NET)和客户位置(END)的专用网络之间的接口。 它包含用于在上行频带中分频接收信号的至少两个装置(BP4,BP5,BP6),至少两个装置(BP4,BP5,BP6)之后的至少两个开关(S4,S5,S6)和 用于阻断或解除单个上游频率范围的测量单元(MESS2),用于测量分离频率范围内的信号的幅度或强度的测量单元(MESS2),以及用于评估测量值并控制至少两个开关的控制单元(CTRL) (S4,S5,S6)。 对于客户位置(END),单个上游频率范围可以在有限的时间内被遥测。 单独的上行频率范围的分散和自主监控由测量单元完成,该测量单元由分界点(UP)本身控制。
    • 3. 发明授权
    • Equalizer for optically transmitted analog information signals
    • 用于光传输模拟信息信号的均衡器
    • US5302922A
    • 1994-04-12
    • US905836
    • 1992-06-29
    • Rolf HeidemannHeinz KrimmelBernhard Junginger
    • Rolf HeidemannHeinz KrimmelBernhard Junginger
    • H04B3/14H03H7/01H03H7/075H04B10/2513H03H7/03
    • H04B10/25137
    • To compensate for nonlinear distortions in analog optical communication transmission systems, caused by laser chirps and the chromatic dispersion of the optical fiber, an equalizer in the form of an LC component is known, whose capacitance is formed by a variable capacitance diode. If this equalizer is to be adjusted for considerable signal distortions (long transmission path length), it must operate at great capacitance, which reduces its bandwidth. In order to be able to equalize large bandwidth signals (e.g. 600 MHz) containing considerable distortions, the invention indicates an LC chain circuit with LC components of the known type, as the equalizer. Further developments of this solution concern the appropriate polarizing of the variable capacitance diode and maintaining the frequency response constant, when adjusting the equalization.
    • 为了补偿由激光啁啾引起的模拟光通信传输系统中的非线性失真以及光纤的色散,已知以LC分量形式的均衡器,其电容由可变电容二极管形成。 如果要对相当大的信号失真(长传输路径长度)调整该均衡器,则必须以较大的电容工作,从而降低其带宽。 为了能够均衡包含相当大失真的大带宽信号(例如600MHz),本发明指出具有已知类型的LC分量的LC链电路作为均衡器。 当调整均衡时,该解决方案的进一步发展涉及可变电容二极管的适当极化并保持频率响应恒定。
    • 4. 发明授权
    • Equalizer for optical communication systems
    • 用于光通信系统的均衡器
    • US5378937A
    • 1995-01-03
    • US905724
    • 1992-06-29
    • Rolf HeidemannHeinz KrimmelBernhard Junginger
    • Rolf HeidemannHeinz KrimmelBernhard Junginger
    • H03H7/01H04B3/04H04B3/06H04B10/2507H04B10/2513H03K3/26G06G7/12H03G11/04H03H5/00
    • H04B10/2507H04B10/25137
    • To compensate for nonlinear signal distortions in analog optical communication transmission systems, caused by laser chirps and the chromatic dispersion of the optical fiber, an equalizer in the form of an LC component is known, whose capacitance is formed by a variable capacitance diode. However, the known equalizer functions only when the capacitance has the proper polarity, which cannot be predicted because of possible polarity inversion during signal transmission. According to the invention, the variable capacitance diode (C.sub.a) has another variable capacitance diode (C.sub.b), with the opposite polarity, connected in parallel, and is equally biased in the high-resistance direction. By adjusting the bias voltage of both capacitances, it can be achieved that one of the two variable capacitance diodes takes over the equalization function, and the other is practically inoperative. Further developments of this solution concern keeping the frequency response constant during adjustment of the equalization, by means of a capacitance connected in parallel to the variable capacitance diodes (C.sub.a, C.sub.b), and the equalization of large bandwidth signals by an LC chain circuit with LC components according to the invention.
    • 为了补偿由激光啁啾引起的模拟光通信传输系统中的非线性信号失真和光纤的色散,已知一种LC分量形式的均衡器,其电容由可变电容二极管形成。 然而,已知的均衡器仅在电容具有适当的极性时起作用,这在信号传输期间由于可能的极性反转而不能被预测。 根据本发明,可变电容二极管(Ca)具有另一个具有相反极性的可变电容二极管(Cb),并联连接,并且在高电阻方向上被均等地偏置。 通过调整两个电容的偏置电压,可以实现两个可变电容二极管中的一个取代均衡功能,另一个实际上不起作用。 该解决方案的进一步发展涉及通过与可变电容二极管(Ca,Cb)并联连接的电容以及通过具有LC的LC链电路来均衡大带宽信号来均衡调节均衡期间保持频率响应恒定 根据本发明的组分。
    • 5. 发明授权
    • Transmission system with tap devices which reduce the effects of
interference
    • 具有抽头装置的传输系统,减少干扰的影响
    • US6006066A
    • 1999-12-21
    • US724183
    • 1996-09-30
    • Heinz Krimmel
    • Heinz Krimmel
    • H04N7/173
    • H04N7/17309
    • A transmission system with a number of tap devices (1), which are connected to a distribution network (9). Subscriber terminals (11) can be connected to each tap device (1) present in a building (10), by means of a private, in-house network (13); these terminals can send upstream signals (AUF) to a center (8). A tap device (1) has first means (4, 5, 6) which attenuate an upstream signal (AUF) supplied to a second port (3) with a specified attenuation factor (a) and send it to the first port (2). The upstream signal (AUF) is sent out by a subscriber terminal (11) with a signal level which is selected so that after the attenuation, the upstream signal (AUF) has a level specified in the distribution network (9).
    • 具有多个抽头装置(1)的传输系统,其连接到分配网络(9)。 订户终端(11)可以通过私人内部网络(13)连接到建筑物(10)中存在的每个抽头设备(1)。 这些终端可以向中心(8)发送上行信号(AUF)。 抽头设备(1)具有以指定的衰减因子(a)衰减提供给第二端口(3)的上行信号(AUF)的第一装置(4,5,6)并将其发送到第一端口(2) 。 上行信号(AUF)由用户终端(11)发送,信号电平被选择,使得在衰减之后,上行信号(AUF)具有在分配网络(9)中指定的电平。
    • 6. 发明授权
    • Optical transmitter
    • 光发射机
    • US5550667A
    • 1996-08-27
    • US108325
    • 1993-08-18
    • Heinz KrimmelHenning BulowRolf HeidemannJurgen Otterbach
    • Heinz KrimmelHenning BulowRolf HeidemannJurgen Otterbach
    • H04B10/2537H04B10/04
    • H04B10/2537
    • A laser (2) of an optical transmitter (1) for the transmission of an analog broadband signal for CATV in particular, can be amplitude-modulated in two different manners with an intelligence signal (N). Direct modulation can lead to an undesired additional frequency modulation. With indirect modulation by means of an optical intensity modulator (3), Brillouin scattering occurs at powers of approximately 10 mW in an optical fiber of the transmission path connected to the optical transmitter (1). Both modulations lead to distortions of the transmitted signal. In order to avoid the disadvantages of both modulations in a technically simple fashion, the carrier emitted from a laser (2) is indirectly modulated with an intelligence signal (N) and the laser (2) also faintly directly modulated with an energy-dispersing signal (V). The faint direct modulation leads to a constant, limited wave length alteration of the optical signal, such that Brillouin scattering is reduced, simultaneously with the avoidance of dispersion distortions.
    • 用于传输CATV的模拟宽带信号的光发射机(1)的激光器(2)可以用智能信号(N)以两种不同的方式进行幅度调制。 直接调制可能导致不需要的附加频率调制。 通过利用光强度调制器(3)的间接调制,在连接到光发送器(1)的传输路径的光纤中,约为10mW的功率发生布里渊散射。 两种调制都会导致发送信号的失真。 为了避免技术上简单的两种调制的缺点,从激光器(2)发射的载体用智能信号(N)间接调制,激光器(2)也用能量分散信号微弱地直接调制 (V)。 微弱的直接调制导致光信号的恒定的有限波长变化,使得布里渊散射减小,同时避免色散失真。
    • 8. 发明申请
    • METHOD FOR MAINTAINING THE COMPATIBILITY OF LEGACY OF RECEIVERS, OPTICAL DISTRIBUTING NETWORK STRUCTURE, AND PARTS THEREOF INCLUDING A METHOD FOR USING SUCH PART
    • 用于维护接收者协调能力的方法,光分布式网络结构及其部分,包括使用此类方法的方法
    • US20090324225A1
    • 2009-12-31
    • US12107753
    • 2008-04-22
    • Heinz KrimmelThomas PfeifferLothar Jentsch
    • Heinz KrimmelThomas PfeifferLothar Jentsch
    • H04J14/02
    • H04B10/27
    • The invention relates to a method for maintaining the compatibility of legacy receivers in network termination units of an optical distributing network structure, especially in a passive optical network, when in the distributing network structure advanced receivers with a multiple of the data rate of the legacy receivers shall be operated too, in which signals for the advanced receivers are transmitted on the same wavelength and using the same physical paths as signals for the legacy receivers, in which, while transmitting signals for the advanced receivers at the same time also signals for the legacy receivers are transmitted, and in which the amplitude of the signals for the advanced receivers compared to the amplitude of the signals for the legacy receivers are chosen such that the signals for the advanced receivers do not block the legacy receivers in the receipt of the signals intended for them.
    • 本发明涉及一种在分布式网络结构中具有传统接收机的数据速率的倍数的高级接收机的情况下,保持传统接收机在光分配网络结构的网络终端单元(特别是无源光网络)中的兼容性的方法 也将运行高级接收机的信号在相同的波长上传输,并使用与传统接收机的信号相同的物理路径,其中同时为高级接收机发送信号也为遗留信号 接收机被发送,并且其中选择用于高级接收机的信号的幅度与用于传统接收机的信号的振幅相比较,使得用于高级接收机的信号在接收到信号时不阻止传统接收机 为他们
    • 9. 发明授权
    • Time-division-multiplexing method and apparatus
    • 时分复用方法和装置
    • US5719874A
    • 1998-02-17
    • US547708
    • 1995-10-19
    • Rolf HeidemannHeinz KrimmelJurgen Otterbach
    • Rolf HeidemannHeinz KrimmelJurgen Otterbach
    • H04J3/16H04J14/08
    • H04J3/1647H04J3/1694H04J14/08
    • In known optical distribution systems, a signal intended for the subscribers is distributed from a transmitting point to all network terminations (point-to-multipoint transmission). The receivers, which are connected to a passive optical network, are adapted to a common bit rate. If a need for a higher data rate arises at a network termination, this need can only be satisfied in the prior art by converting all receivers. This is not possible without interrupting the service. Furthermore, the conversion entails great expense, since the receivers of these network terminations where the need for information is unchanged have to be converted as well. By a time-division-multiplexing method, a time-division multiplex signal is generated which has a frame whose duration is equal to one bit period (T) of a digital signal, and which is divided into k time slots (ZS). At least two time slots (ZS) are used for one digital signal, and one respective time slot (ZS) is used for each of the remaining digital signals.
    • 在已知的光分配系统中,用于用户的信号从发射点分发到所有网络终端(点到多点传输)。 连接到无源光网络的接收机适用于公共比特率。 如果在网络终止时需要较高的数据速率,则只需在现有技术中通过转换所有接收机来满足这一需求。 这不可能不中断服务。 此外,转换需要很大的费用,因为这些网络终端的接收者在信息需求不变的情况下也必须被转换。 通过时分多路复用方法,产生时间复用信号,该时分复用信号的持续时间等于数字信号的一个比特周期(T),并被划分为k个时隙(ZS)。 对于一个数字信号使用至少两个时隙(ZS),并且对于每个剩余的数字信号使用一个相应的时隙(ZS)。
    • 10. 发明授权
    • Transmitting/receiving facility and method for transmitting broadband signals as well as transmitting/receiving facility for receiving broadband signals
    • 用于发送宽带信号的发射/接收设施和方法以及用于接收宽带信号的发射/接收设施
    • US06310706B1
    • 2001-10-30
    • US09325458
    • 1999-06-03
    • Rolf HeidemannHeinz Krimmel
    • Rolf HeidemannHeinz Krimmel
    • H04B1000
    • H04J13/0022H04B1/69H04J13/004H04J13/10H04N7/17309H04N21/6118H04N21/6168
    • Stationary interference signals from radio stations, for example, enter a transmission network (NET), e.g., a coaxial cable network with return channel, and impair the transmission of broadband signals, e.g., data, in the upstream frequency band, since they lie in the same frequency range. The tranmitting/receiving unit (SE1) of a terminal (END) contains a receiving unit (EMP1) for receiving frequency values of stationary interference signals induced in the transmission link, a memory (MEMO1) for storing the received frequency values, a generator (SG1, NG1) for generating a spreading function with spectral zeros at frequency values which are determined from the stored frequency values, and a multiplier (MUL1) for multiplying the broadband signals to be transmitted by the generated spreading function with spectral zeros. The spectral zeros are so generated that, if the spreading function with the spectral zeros is multiplied by the individual interference signals, at least one of the spectral zeros is located in the frequency range of the broadband signals, so that when the broadband signals are despread at a center (ZE), the impairment caused by the interference signals is reduced.
    • 例如,来自无线电台的固定干扰信号进入传输网络(NET),例如具有返回信道的同轴电缆网络,并且损害上游频带中宽带信号(例如数据)的传输,因为它们位于 频率范围相同。 终端(END)的发送/接收单元(SE1)包含用于接收在传输链路中感应到的静止干扰信号的频率值的接收单元(EMP1),用于存储所接收的频率值的存储器(MEMO1) SG1,NG1),用于根据从所存储的频率值确定的频率值产生具有频谱零点的扩展函数;以及乘法器(MUL1),用于将由所生成的扩展函数发送的宽带信号乘以频谱零。 光谱零被如此生成,如果具有频谱零的扩展函数与各个干扰信号相乘,则至少有一个频谱零位于宽带信号的频率范围内,使得当宽带信号被解扩时 在中心(ZE),由干扰信号引起的损害减少。