公开(公告)号：US06160898A

公开(公告)日：2000-12-12

申请号：US216155

申请日：1998-12-18

申请人： Wolfgang Bachmann ,  Gerhard Krump ,  Hans-Jurgen Regl

发明人： Wolfgang Bachmann ,  Gerhard Krump ,  Hans-Jurgen Regl

IPC分类号： H04R7/22 ,  H04R1/00 ,  H04R7/04 ,  H04R7/20 ,  H04R25/00

CPC分类号： H04R7/045 ,  H04R7/20 ,  H04R2307/207

摘要： The invention proposes a suspension mount for sound reproduction devices according to the flexural wave principle. Characteristic for such devices is that a panel 10 is provided which must be flexibly attached to a holder 17. The panel 10 is composed of a core layer with a perforated structure, and two cover layers 12 which cover the core layer 11. Since the usual edge borders of conventional loudspeakers must be designed very hard due to the size and weight of the panel 10, the quality of the sound reproduction by such a device is reduced. For that reason the objective of the invention is a suspension mount which avoids the drawbacks of the state of the art. To that end it is proposed to build the suspension mount with the core layer 11 and/or at least one of the cover layers 12. If the core layer 11 itself provides the flexible attachment, it is also possible without any great effort to flexibly attach the panel 10 away from the edge areas. In that case the flexibility of the perforated structure of the core layer 11 is used as a spring element.

摘要翻译： 本发明提出了一种根据弯曲波原理的声音再现装置的悬架。 这种装置的特征在于，提供了必须将柔性地附接到保持器17的面板10.面板10由具有多孔结构的芯层和覆盖芯层11的两个覆盖层12组成。由于通常 由于面板10的尺寸和重量，常规扬声器的边缘必须设计得非常硬，所以这种装置的声音再现质量降低。 为此，本发明的目的是避免现有技术的缺点的悬挂安装件。 为此，提出用核心层11和/或至少一个覆盖层12构建悬挂安装件。如果芯层11本身提供柔性附件，则也可以没有任何大的努力灵活地附着 面板10远离边缘区域。 在这种情况下，芯层11的穿孔结构的柔性被用作弹簧元件。

公开(公告)号：US6148103A

公开(公告)日：2000-11-14

申请号：US14954

申请日：1998-01-28

申请人： Petri Nenonen

发明人： Petri Nenonen

IPC分类号： G06T5/40 ,  G06K9/00

CPC分类号： H04N5/20 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10016

摘要： The invention relates to adjusting contrast in television pictures and other natural picture sequences. In the method according to the invention, the pictures of the picture sequence are gathered into histograms which are processed in certain fashion in order to improve contrast in the pictures, whereafter there are formed mapping functions on the basis of the processed histograms, and the pixel values of the pictures in the picture sequence are then altered on the basis of said mapping functions. The histograms are processed so that from each class where the magnitude of values surpasses a given, predetermined limit, there are cut off all values surpassing said limit, which are then redistributed in the histogram, to classes nearest to the class under observation. The weighting of the distribution controlling the redistribution of the cut-off values advantageously varies according to the class under observation, so that near the low-value end of the histogram, the values are redistributed mainly to classes with higher values than in the class under observation, and near the high-value end of the histogram, the cut-off values are redistributed mainly to classes with lower values than in the class under observation. In the middle region of the histogram, the values are distributed essentially evenly on both sides of the class under observation. Moreover, the cut-off limit can advantageously be defined to be dependent on the class, so that the limit at the extreme ends of the histogram is lower than in the middle region thereof. By applying this procedure, it is possible to avoid a situation where the picture details are covered under areas that are seen nearly black or nearly white. The thus preprocessed histograms are filtered in an adaptive edge-preserving filter, so that flickering is effectively prevented and at the same time there is avoided a distortion of the pictures successive to the cut-off spots in the picture sequence.

公开(公告)号：US5987063A

公开(公告)日：1999-11-16

申请号：US815963

申请日：1997-03-13

申请人： Jukka Rinne

发明人： Jukka Rinne

IPC分类号： H04L27/26 ,  H04Q1/20 ,  H04B1/10

CPC分类号： H04L27/2679 ,  H04L27/2657

摘要： The invention relates to a method for compensating channel errors in digital data communication in a signal in sampled data form. The method evaluates the phase error of the examined sample on the basis of the phase errors of at least two preceding samples, the estimate being used to compensate the phase error of the examined sample (y.sub.m (n)).

摘要翻译： 本发明涉及用于以采样数据形式补偿信号中的数字数据通信中的信道错误的方法。 该方法基于至少两个先前样本的相位误差来评估检查样本的相位误差，该估计用于补偿所检查样本的相位误差（ym（n））。

公开(公告)号：US5892799A

公开(公告)日：1999-04-06

申请号：US744866

申请日：1996-11-07

申请人： Reijo Jaakkola

发明人： Reijo Jaakkola

IPC分类号： H04L27/38 ,  H03D1/00 ,  H03D3/18 ,  H04N5/44 ,  H04N5/50

CPC分类号： H04L27/3836

摘要： The invention relates to a method in connection with a QAM receiver wherein, particularly when making use of a 32QAM, 64QAM demodulator lator a like, a digital transmission signal (1) to be transmitted is down-converted in a tuner and band-filtered with a first filter to a preferably fixed, standard intermediate frequency (5). This is followed by a further subsequent down-conversion by a first oscillator and filtering with a second filter to a so-called low intermediate frequency (6) which is equal to the symbol rate used in image transmission or its low odd multiple, whereafter an AD converter (7) is used under the synchronization of a second oscillator (8) for picking up samples (X) from the symbol sequence of a processed signal (6) to a demodulator (9), capable of regulating the above-mentioned, preferably voltage-controlled oscillators. Particularly in order to provide a variable-rate transmission signal, said low intermediate frequency signal (6), such as the mean frequency and bandwidth of its spectrum, is measured by of a measuring system (11), the measuring results thereof being used for controlling the oscillators (4, 8) in such a manner that the fixed-rate demodulator (9) can be locked to the signal. The invention relates also to a QAM receiver operating in accordance with the method.

摘要翻译： 本发明涉及一种与QAM接收机有关的方法，其中特别是当使用32QAM，64QAM解调器等时，要发射的数字传输信号（1）在调谐器中进行下变频，并用 第一过滤器至优选固定的标准中频（5）。 随后由第一振荡器进一步进一步下变频，并用第二滤波器滤波成所谓的低中频（6），其等于在图像传输或其低奇数倍中使用的符号率，之后是 AD转换器（7）在第二振荡器（8）的同步下使用，用于从处理的信号（6）的符号序列拾取样本（X）到解调器（9），能够调节上述的， 优选电压控制振荡器。 特别是为了提供可变速率传输信号，通过测量系统（11）测量所述低频中频信号（6），例如其频谱的平均频率和带宽，其测量结果用于 以固定速率解调器（9）可以锁定信号的方式来控制振荡器（4,8）。 本发明还涉及根据该方法操作的QAM接收机。

公开(公告)号：US5822470A

公开(公告)日：1998-10-13

申请号：US598640

申请日：1996-02-06

申请人： Markku Vehvilainen

发明人： Markku Vehvilainen

IPC分类号： G06T5/20 ,  H04N7/26 ,  H04N7/30 ,  G06F17/10

CPC分类号： H04N19/527 ,  G06T5/20 ,  H04N19/86

摘要： The invention relates to a method for processing a data signal which is transformed into an n-dimensional matrix form and which is to be processed by an n-dimensional quantizing matrix. In the invention the n-dimensional quantizing matrix is processed by an n-dimensional transfer function matrix before processing the data signal. In order to form the transfer function matrix, at least one transfer function is selected, and it is given a fixed point in the n-dimensional transfer matrix. At least a part of the elements of the transfer function matrix are processed by at least one transfer function, so that elements at a predetermined distance from the fixed point are processed by a processing quantity dependent on the transfer function.

摘要翻译： 本发明涉及一种用于处理数据信号的方法，该数据信号被变换为n维矩阵形式，并且将由n维量化矩阵处理。 在本发明中，在处理数据信号之前，通过n维传递函数矩阵来处理n维量化矩阵。 为了形成传递函数矩阵，选择至少一个传递函数，并在n维传递矩阵中给出一个固定点。 传递函数矩阵的至少一部分元素由至少一个传递函数进行处理，使得距离固定点预定距离的元素被处理依赖于传递函数的处理量。

公开(公告)号：US5729617A

公开(公告)日：1998-03-17

申请号：US690322

申请日：1996-07-25

申请人： Hermann Gruber

发明人： Hermann Gruber

IPC分类号： H04R9/02 ,  H04R25/00

CPC分类号： H04R9/025 ,  H04R2209/022

摘要： The invention presents a magnet system (10) for electromagnetic converters, which is essentially formed of two parts. This magnet system (10) is formed of a one-piece pot-shaped yoke (11), which contains a bottom (13), an edge wall (14) and a core (16), and a permanent magnet (12). This permanent magnet (12), which is either connected to the core (16) or the edge wall (14), is magnetized crosswise to the extended direction of the core axis. This type of configuration permits to construct a very low scatter magnet system (10), whose number of components is clearly reduced with respect to known systems. The connection of yoke (11) and permanent magnet (12) is advantageously made into a press fit connection.

摘要翻译： 本发明提供一种用于电磁转换器的磁体系统（10），其基本上由两部分组成。 该磁体系统（10）由包含底部（13），边缘壁（14）和芯部（16）的一体式盆形磁轭（11）和永磁体（12）构成。 该永磁体（12）或者连接到芯部（16）或边缘壁（14）上，与芯轴的延伸方向相互磁化。 这种类型的配置允许构造非常低的散射磁体系统（10），其相对于已知系统明显地减少了部件的数量。 轭（11）和永磁体（12）的连接有利地制成压配合连接。

公开(公告)号：US5593057A

公开(公告)日：1997-01-14

申请号：US579886

申请日：1995-12-28

申请人： Martin Kunzmann ,  Erwin Rommel

发明人： Martin Kunzmann ,  Erwin Rommel

IPC分类号： H01J9/24 ,  H01J9/00 ,  H01J29/00 ,  H01J29/86 ,  H01J31/00

CPC分类号： H01J9/00 ,  H01J2209/466

摘要： It is known to provide picture tube parts with identification marks. According to the state of the art, this identification of picture tube parts is achieved by attaching special layers or labels containing the identification data to the outside of the glass pans (10). However, this technique is extraordinarily costly because of the additional layers or labels. The invention shows that the respective identification marks (16) are formed directly on a first functional layer applied to the inside (19) of the respective picture tube part. The process is very simple if the respective identification marks (16) are burned into the first functional layer by means of a laser.

摘要翻译： 已知提供具有识别标记的显像管部件。 根据现有技术，通过将包含识别数据的特殊层或标签附接到玻璃盘（10）的外部来实现显像管部件的识别。 然而，由于附加的层或标签，这种技术非常昂贵。 本发明表明，相应的识别标记（16）直接形成在施加到各个显像管部分的内部（19）的第一功能层上。 如果通过激光将相应的识别标记（16）燃烧到第一功能层中，则该过程非常简单。

公开(公告)号：US5559891A

公开(公告)日：1996-09-24

申请号：US316101

申请日：1994-09-30

申请人： Juha Kuusama ,  Aki Makivirta

发明人： Juha Kuusama ,  Aki Makivirta

IPC分类号： G10K15/08 ,  G10K11/16

CPC分类号： G10K15/08

摘要： The invention relates to a device to be used for changing the acoustic properties of a room, comprising a pressure transducer (1), a loudspeaker (2) and an electronic control circuit (3) adapted to generate, in response to pressure changes in the room, an electrical signal that serves to cancel the pressure change detected by the pressure transducer (1) when it is reproduced through the loudspeaker. For improving the properties of the room also with respect to reverberation, the device of the invention further includes an ambience generator (4) adapted to receive an electrical signal proportional to the sound present in the room and to generate, in response to said signal, a signal which produces an acoustic field containing early reflections and reverberation in the room when reproduced through the loudspeaker (2).

摘要翻译： 本发明涉及一种用于改变房间的声学特性的装置，包括压力传感器（1），扬声器（2）和电子控制电路（3），适于响应于 房间，用于消除由压力传感器（1）通过扬声器再现时检测到的压力变化的电信号。 为了改善相对于混响的房间的性质，本发明的装置还包括适于接收与房间中存在的声音成比例的电信号并响应于所述信号产生的电气信号的环境发生器（4） 当通过扬声器（2）再现时，产生包含室内早期反射和混响的声场的信号。

公开(公告)号：US5546470A

公开(公告)日：1996-08-13

申请号：US447558

申请日：1995-05-23

申请人： Stefan Geisenberger ,  Manfred Aigner

发明人： Stefan Geisenberger ,  Manfred Aigner

IPC分类号： H04R9/00 ,  H04R7/16 ,  H04R9/04 ,  H04R9/06 ,  H04R25/00

CPC分类号： H04R7/16 ,  H04R9/04 ,  H04R9/06

摘要： According to the state of the art, high-temperature resistant centering of loudspeakers is configured so that a rod (17) that is connected to the pole body (14) serves as a guide for a bushing (19) connected to the voice coil support (11). However, the narrow space between the rod (17) and the bushing (19) leads to friction between the rod (17) and the bushing (19) during excursion movements of the voice coil support (11), which retards the free movement of the voice coil support (11). The invention therefore has the task of providing high-temperature resistant centering for loudspeakers, in which any touching of rod (17) and bushing (19) is eliminated. The invention makes the rod (17) and the bushing (19) from magnetic material, and magnetizes this material radially to the loudspeaker axis (16). If the facing magnetic areas of rod (17) and bushing (19) have the same polarity, no-contact centering of the bushing (19) over the rod (17) is achieved by the mutual rejection.

摘要翻译： 根据现有技术，扬声器的耐高温居中配置使得连接到极体（14）的杆（17）用作用于连接到音圈支撑件的衬套（19）的引导件 （11）。 然而，在音圈支撑件（11）的偏移运动期间，杆（17）和衬套（19）之间的狭窄空间导致杆（17）和衬套（19）之间的摩擦，这阻碍了自由运动 音圈支架（11）。 因此，本发明的任务是提供用于扬声器的耐高温定心器，其中消除了杆（17）和衬套（19）的任何接触。 本发明使得杆（17）和衬套（19）由磁性材料制成，并使该材料径向磁化到扬声器轴线（16）。 如果杆（17）和衬套（19）的面对的磁性区域具有相同的极性，则通过相互排斥实现衬套（19）在杆（17）上的无接触定心。

公开(公告)号：US5509081A

公开(公告)日：1996-04-16

申请号：US473100

申请日：1995-06-07

申请人： Juha Kuusama

发明人： Juha Kuusama

IPC分类号： B60R11/02 ,  H03G3/32 ,  H03G3/00

CPC分类号： H03G3/32 ,  H04R2225/43

摘要： The invention relates to a sound reproduction system comprising a source of a sound signal in electrical form, a first filter group for dividing the signal derived from the sound signal source into several sound signals occurring in different frequency bands and an adjustable gain amplifier for each frequency band for amplifying the sound signal occurring in said frequency band. To take into account the noise existing in the environment of the sound reproduction system in the adjustment of the system, the system further comprises means for generating an electrical signal proportional to the background noise existing in the environment and means for adjusting the gain of the amplifiers in response to said electrical signal proportional to the background noise.

摘要翻译： 本发明涉及一种包括电气形式的声音信号源的声音再现系统，用于将从声音信号源导出的信号分解成在不同频带中出现的几个声音信号的第一滤波器组以及用于每个频率的可调增益放大器 用于放大在所述频带中发生的声音信号。 为了在系统的调整中考虑声音再现系统的环境中存在的噪声，系统还包括用于产生与环境中存在的背景噪声成比例的电信号的装置和用于调节放大器的增益的装置 响应于与背景噪声成比例的所述电信号。