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1. 发明授权

US06751261B1 Synchronisation 有权
标题翻译：同步
公开(公告)号：US06751261B1
公开(公告)日：2004-06-15
申请号：US09147230
申请日：1999-02-09
申请人： Lennart Olsson , Gunnar Bahlenberg , Daniel Bengtsson , Siwert Håkansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Sven-Rune Olofsson , Tomas Stefansson , Hans Oman , Goran Okvist
发明人： Lennart Olsson , Gunnar Bahlenberg , Daniel Bengtsson , Siwert Håkansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Sven-Rune Olofsson , Tomas Stefansson , Hans Oman , Goran Okvist
IPC分类号： H04L506
CPC分类号： H04L27/2662 , H04L27/2657 , H04L27/2672 , H04L27/2678
摘要： With OFDM systems the frequency domain data is the Fourier transform of the received time domain OFDM frames. The time domain frames must be sampled, at the receiver, in synchronism with the transmitter, so that each received frame contains data from only a single transmitted frame. It is vital for this synchronism to be maintained in order to maintain the orthogonality of the frames. A typical multi-carrier system, of the OFDM type, which uses a cyclic prefix permits orthogonality to be maintained when there is a small deviation from exact frame synchronisation. Because the signalling interval includes both an entire frame and the cyclic prefix, which is a repetition of part of the frame, a frame sampled within the signalling interval will contain data from only one frame. Since the signalling interval is greater than the frame period, this gives some leeway in frame alignment. In a multi-carrier system of the OFDM type, an adaptive channel equalizer, operating in the frequency domain, is often used. The internal parameters in such an equalizer contain, in addition to information about the characteristics of the channel, information which can be interpreted as the time deviation between the sampling clocks of the transmitter and the receiver. The present invention utilizes this information to control the sampling clock of the receiver in a more robust way than has previously been possible with known techniques. The present invention is particularly suitable for use in ADSL and VDSL modems which can be used to give broadband access over copper networks. The invention is also of relevance to broadband transmission in mobile and semi-mobile systems for transmission over the radio channels.
摘要翻译：对于OFDM系统，频域数据是接收的时域OFDM帧的傅里叶变换。必须在接收机处与发射机同步地采样时域帧，使得每个接收的帧包含来自仅一个发射帧的数据。为了保持帧的正交性，保持该同步是至关重要的。使用循环前缀的OFDM类型的典型多载波系统当与精确帧同步的偏差很小时，允许维持正交性。由于信令间隔包括作为帧的一部分的重复的整个帧和循环前缀，所以在信令间隔内采样的帧将仅包含来自一个帧的数据。由于信令间隔大于帧周期，所以在帧对齐中给出了一些余地。在OFDM类型的多载波系统中，经常使用在频域中工作的自适应信道均衡器。除了关于信道特性的信息之外，这种均衡器中的内部参数还包含可被解释为发射机和接收机的采样时钟之间的时间偏差的信息。本发明利用该信息以比先前已知技术可能的更可靠的方式来控制接收机的采样时钟。本发明特别适用于ADSL和VDSL调制解调器，可用于通过铜网络提供宽带接入。本发明还涉及用于在无线电信道上传输的移动和半移动系统中的宽带传输。

2. 发明授权

US07039020B1 Near-echo suppression 有权
标题翻译：近回波抑制
公开(公告)号：US07039020B1
公开(公告)日：2006-05-02
申请号：US09529427
申请日：1998-10-27
申请人： Gunnar Bahlenberg , Daniel Bengtsson , Siwert Hakansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Lennart Olsson , Sven-Rune Olofsson , Tomas Stefansson , Hans Oman , Goran Okvist , Per Odling , Petra Dentgen , Franck Sjöberg
发明人： Gunnar Bahlenberg , Daniel Bengtsson , Siwert Hakansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Lennart Olsson , Sven-Rune Olofsson , Tomas Stefansson , Hans Oman , Goran Okvist , Per Odling , Petra Dentgen , Franck Sjöberg
IPC分类号： H04J1/00
CPC分类号： H04B3/23
摘要： The hybrid circuit can be used to substantially reduce near echo signals. The circuit includes a balanced 2-wire to 4-wire hybrid for interconnecting a two wire receive path and a two wire transmit path to a two wire transmission line. The two wire receive path connects the balanced hybrid to an A/D converter and the two wire transmit path connects a D/A converter to the balanced hybrid. The two wire receive path contains a filter, dimensioned to remove signals transmitted from the D/A converter. The invention is particularly adapted for use with FDD and OFDD.
摘要翻译：混合电路可以用于大大减少近回波信号。该电路包括用于将两线接收路径和两线传输路径互连到双线传输线的平衡的2线至4线混合。两线接收路径将平衡混合器连接到A / D转换器，并且双线传输路径将D / A转换器连接到平衡混合器。两线接收路径包含滤波器，其尺寸用于去除从D / A转换器发送的信号。本发明特别适用于FDD和OFDD。

3. 发明授权

US06625112B1 Synchronization 有权
标题翻译：同步
公开(公告)号：US06625112B1
公开(公告)日：2003-09-23
申请号：US09147229
申请日：1999-03-11
申请人： Lennart Olsson , Gunnar Bahlenberg , Daniel Bengtsson , Siwert Hakansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Sven-Rune Olofsson , Tomas Stefansson , Hans Ohman , Goran Okvist
发明人： Lennart Olsson , Gunnar Bahlenberg , Daniel Bengtsson , Siwert Hakansson , Anders Isaksson , Lars-Ake Isaksson , Mikael Isaksson , Magnus Johansson , Mauritz Lahti , Lis-Marie Ljunggren , Hans Lundberg , Tomas Nordstrom , Sven-Rune Olofsson , Tomas Stefansson , Hans Ohman , Goran Okvist
IPC分类号： H04J1100
CPC分类号： H04L27/2662 , H04L27/2657 , H04L27/2672 , H04L27/2678
摘要： A mechanism for achieving frame synchronization in the frequency domain. In order to synchronize a receiver with a transmitter, on signal acquisition, the interval in which orthogonality exists is determined. Once this has been achieved, an argument function is calculated from the received frame. This argument function can then be used to improve the synchronization. This system is particularly suitable for use in ADSL and VDSL modems which can be used to give broad band access over copper networks. It is also relevant to broad band transmission in mobile and semi-mobile systems for transmission over radio channels.
摘要翻译：实现频域帧同步的机制。为了使接收机与发射机同步，在信号采集中，确定存在正交性的间隔。一旦达到这个目的，就会从接收的帧中计算一个自变量函数。这个参数函数可以用来改善同步。该系统特别适用于ADSL和VDSL调制解调器，可用于通过铜网络实现宽带接入。它也适用于通过无线电信道进行传输的移动和半移动系统中的宽带传输。

4. 发明授权

US06731707B1 Arrangement for synchronization of nodes in VDSL-systems 有权
标题翻译： VDSL系统中节点同步的安排
公开(公告)号：US06731707B1
公开(公告)日：2004-05-04
申请号：US09446120
申请日：2000-08-24
申请人： Sven-Rune Olofsson , Joachim Johansson , Mikael Isaksson , Hans Öhman , Daniel Bengtsson , Lennart Olsson , Anders Isaksson , Göran Ökvist , Lis-Mari Ljunggren , Hans Lundberg , Tomas Stefansson , Gunnar Bahlenberg , Sivert Håkansson , Magnus Johansson
发明人： Sven-Rune Olofsson , Joachim Johansson , Mikael Isaksson , Hans Öhman , Daniel Bengtsson , Lennart Olsson , Anders Isaksson , Göran Ökvist , Lis-Mari Ljunggren , Hans Lundberg , Tomas Stefansson , Gunnar Bahlenberg , Sivert Håkansson , Magnus Johansson
IPC分类号： H04L700
CPC分类号： H04N1/0035 , H04J3/0644
摘要： An arrangement for synchronization of nodes in VDSL-systems, or more exactly, synchronization of optical VDSL-nodes which share a common part of a cable in the access network between subscribers and a local station. A time synchronization is provided towards an external system, for instance GPS, which gives a time reference by which the different nodes can be synchronized. The synchronization reduces the near end cross-talk between the VDSL-systems in the different nodes. Preferably, each respective node includes a receiver for a synchronization signal and an internal oscillator with high stability to deliver a stable clock signal.
摘要翻译：用于VDSL系统中的节点同步的装置，或者更确切地说，在用户和本地站之间共享接入网络中的电缆的公共部分的光VDSL节点的同步。向外部系统（例如GPS）提供时间同步，其给出不同节点可以被同步的时间参考。同步减少不同节点中的VDSL系统之间的近端串扰。优选地，每个相应节点包括用于同步信号的接收器和具有高稳定性以提供稳定时钟信号的内部振荡器。

5. 发明授权

US4592804A Method for pre-treating lignocellulosic material in two steaming zones 失效
标题翻译：在两个蒸汽区预处理木质纤维素材料的方法
公开(公告)号：US4592804A
公开(公告)日：1986-06-03
申请号：US622944
申请日：1984-06-21
申请人： Sture Noreus , Hans Lundberg , Lars Uhlin , Bengt Lindquist
发明人： Sture Noreus , Hans Lundberg , Lars Uhlin , Bengt Lindquist
IPC分类号： D21C1/00 , D21B1/02 , D21C1/02
CPC分类号： D21C1/02 , D21B1/021
摘要： In the continuous manufacture of cellulose pulp it has been found that air often remains in the lignocellulosic material subsequent to steaming the same. These air inclusions cause the lignocellulosic material to float in the cooking liquid, which results in interruptions in the digestion process. This problem is solved by means of the present invention, which relates to a method in which prior to being steamed, the lignocellulosic material is brought into contact with a heating medium. The method is characterized by supplying the heating medium to the advancing lignocellulosic material at several occasions; by distributing the heating medium in a manner such as to increase the temperature of the material in the direction in which it is advanced; and by separating condensed liquid from the lignocellulosic material.The invention also relates to apparatus for carrying out the above method.
摘要翻译：在纤维素纸浆的连续制造中，已经发现在蒸汽之后，空气通常保留在木质纤维素材料中。这些空气夹杂物使木质纤维素材料漂浮在烹调液中，这导致消化过程中断。通过本发明解决了这个问题，本发明涉及一种方法，其中在蒸煮之前使木质纤维素材料与加热介质接触。该方法的特征在于在几种情况下将加热介质供应到前进的木质纤维素材料; 通过以如下方式分配加热介质：使材料的温度沿其前进方向增加; 并通过分离来自木质纤维素材料的冷凝液体。本发明还涉及用于实施上述方法的装置。

6. 发明授权

US5318010A Medical instrument 失效
标题翻译：医疗仪器
公开(公告)号：US5318010A
公开(公告)日：1994-06-07
申请号：US730781
申请日：1992-09-01
申请人： Hans Lundberg
发明人： Hans Lundberg
IPC分类号： A61B1/32
CPC分类号： A61B1/32
摘要： An instrument for vaginal inspection or exploration consists of separate speculum and depressor components, each molded from plastic material. The handles of the components are adapted to be releasably interfitted in a dovetail manner to form a unitary handle, with the handles being longitudinally slidable relative to each other to adjust the separation between the speculum and depressor blades. The dovetail arrangement includes toothed locking flanges on the depressor handle which releasably cooperate with teeth on the sides of the speculum handle. By depressing a transverse web portion or button, the flanges are flexed apart to allow longitudinal adjustment between the handles, using one hand only. The depressor handle includes an intermediate member connected to the depressor blade. This intermediate member is of an arcuate, laterally offset configuration so as to provide unobstructed access to the space between the blades in the longitudinal direction of the blades.
摘要翻译： PCT No.PCT / GB90 / 00128 Sec。 371日期：1992年9月1日 102（e）日期1992年9月1日PCT 1990年1月29日PCT PCT。第WO90 / 08499号公报 1990年8月9日。阴道检查或探查的仪器由单独的窥器和抑制器组件组成，每个模具和塑料材料均由塑料材料模制而成。部件的把手适于以燕尾方式可释放地相互配合以形成整体手柄，其中把手可相对于彼此纵向滑动以调节窥器与压降器叶片之间的间隔。燕尾装置包括在压力把手上的齿形锁定凸缘，其可释放地与窥器手柄的侧面上的齿配合。通过按压横向腹板部分或按钮，凸缘弯曲分开，以便仅使用一只手即可在手柄之间进行纵向调节。所述按压手柄包括连接到所述降压片的中间构件。该中间构件具有弓形的横向偏移构造，以便在刀片的纵向方向上提供对刀片之间的空间的无阻碍的通路。

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