公开(公告)号：EP1985080A2

公开(公告)日：2008-10-29

申请号：EP06842513.1

申请日：2006-12-14

申请人： Koninklijke Philips Electronics N.V. ,  Signalion GmbH ,  Philips Intellectual Property & Standards GmbH

发明人： BAGGEN, Constant, P., M., J. ,  FILIPPI, Alessio ,  HUSEN, Sri, A. ,  STASSEN, Maurice, L., A. ,  AUE, Volker ,  BURY, Andreas ,  FLIESS, Thomas ,  CASAMAJOU, Yann ,  PIROT, Frederic

IPC分类号： H04L25/02

CPC分类号： H04L27/261

摘要： In an OFDM mobile communications system, an algorithm for forming a preliminary estimate of the channel on pilot subcarriers is carried out. Based on this preliminary estimate, a channel property is estimated. This channel property is then used to decide whether to enter a mobile receiver mode or a stationary receiver mode. For example, in the mobile mode channel estimation is performed using only pilot symbols from the current symbol period, while in the static mode channel estimation is performed using pilot symbols from the current symbol period and pilot symbols from other symbol periods.

公开(公告)号：EP2172083A2

公开(公告)日：2010-04-07

申请号：EP08789294.9

申请日：2008-07-14

申请人： Koninklijke Philips Electronics N.V.

发明人： BAGGEN, Constant, P., M., J. ,  HEKSTRA, Andries, P. ,  LINNARTZ, Johan, P., M., G.

IPC分类号： H05B37/02

CPC分类号： H05B37/0272 ,  H04B10/1141 ,  H04B10/116 ,  H04L25/4904 ,  H05B37/0245 ,  H05B37/0254

摘要： A method for driving a light source (11, 12, 13) is described, wherein the light source is alternately switched ON and OFF in an ON/OFF pattern, wherein the duty cycle of the ON/OFF pattern is varied to vary the average light intensity of the light source, and wherein the shape of the ON/OFF pattern is varied to transmit data. Thus, a control signal for the light source comprises data information as well as duty cycle information. The duty cycle is varied within a range from almost zero to almost 100%, and data is varied and transmitted without affecting the duty cycle.

公开(公告)号：EP1829038A1

公开(公告)日：2007-09-05

申请号：EP05822490.8

申请日：2005-12-07

申请人： Koninklijke Philips Electronics N.V.

发明人： BAGGEN, Constant, P., M., J. ,  HAITSMA, Jaap, A. ,  STARING, Antonius, A., M. ,  TALSTRA, Johan, C.

IPC分类号： G11B20/00

CPC分类号： G11B20/00086 ,  G11B20/00094 ,  G11B20/00123 ,  G11B20/0021 ,  G11B20/00369 ,  G11B20/00557 ,  G11B20/00731 ,  G11B20/00797 ,  G11B20/0092

摘要： In order to efficiently prevent the save-and-restore attack on usage rights associated with digital work, these usage rights are protected by a hidden channel. In order to make it a difficult or expensive to manipulate the hidden channel, a device is proposed comprising: writing means (34) for writing on a record carrier (20) said digital work (DW) and attached usage right information (22) defining one or more conditions to be satisfied in order for the usage right to be exercised, - fingerprint extraction means (23) for deriving fingerprint data (24) from physically uncontrollable, changeable non-uniformities on said record carrier (20) , and authentication means (25) for generating authentication data (26) from said fingerprint data (24) and said usage right information (22) , said authentication data being provided for authenticating said usage right information, said writing means (34) being adapted for writing said authentication data (25) on said record carrier (20) .

公开(公告)号：EP1757052A1

公开(公告)日：2007-02-28

申请号：EP05740463.4

申请日：2005-05-24

申请人： Koninklijke Philips Electronics N.V.

发明人： BAGGEN, Constant, P., M., J. ,  HUSEN, Sri, A. ,  STASSEN, Maurice, L., A. ,  TSANG, Hoi, Y.

IPC分类号： H04L25/03 ,  H04L27/26 ,  H04L25/02

CPC分类号： H04L27/2647 ,  H04L25/0234 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03605

摘要： A method of signal processing for a receiver for OFDM encoded digital signals, for counteracting inter-carrier interference (ICI) caused by Doppler broadening. The OFDM encoded digital signals are transmitted as sub-carriers in several channels, which form OFDM blocks. The method comprises estimation of a channel transfer function (H1) by a channel estimation scheme in each sub-carrier and estimation of data (a1) by a data estimation scheme from said channel transfer function (H1) and a received signal (yo). Then, a derivative (Hj’) of said channel transfer function in each sub-carrier is estimated by a temporal filtering; and the inter-carrier interference (ICI) is removed from said received signal by using the estimated data (â1) and the estimated derivative (Hj’ ) of the channel transfer function in order to obtain a cleaned received signal (y1).

摘要翻译： 一种用于OFDM编码数字信号的接收机的信号处理方法，用于抵消由多普勒展宽引起的载波间干扰（ICI）。 OFDM编码的数字信号作为形成OFDM块的几个信道中的子载波传送。 该方法包括通过每个子载波中的信道估计方案来估计信道传递函数（H1），并且通过来自所述信道传递函数（H1）和接收信号（yo）的数据估计方案来估计数据（a1）。 然后，通过时间滤波来估计每个子载波中的所述信道传递函数的导数（Hj'）; 并且通过使用估计的数据（11）和信道传递函数的估计微分（Hj'）从所述接收信号中去除载波间干扰（ICI），以便获得清洁的接收信号（y1）。

公开(公告)号：EP1757041A1

公开(公告)日：2007-02-28

申请号：EP05746695.5

申请日：2005-05-31

申请人： Koninklijke Philips Electronics N.V.

发明人： RIETMAN, Ronald ,  OOSTVEEN, Job, C. ,  VAN HOUTUM, Wilhelmus, J. ,  TOLHUIZEN, Ludovicus, M., G., M. ,  EGNER, Sebastian ,  BAGGEN, Constant, P., M., J. ,  LINNARTZ, Johan, P., M., G.

IPC分类号： H04L12/56 ,  H04L29/06

CPC分类号： H04W28/06 ,  H04B7/02 ,  H04L69/08 ,  H04W84/12 ,  H04W88/06

摘要： Transmitters (116) for transmitting information and receivers (126) for receiving the information are defined by the information comprising a primary message and a secondary message combined in a same transmission or a same reception, which primary and secondary messages comprise communication protocol signaling messages, to avoid that a protocol conversion arrangement needs to be added to and to be placed between the transmitter (116) and the receiver (126). This increases the efficiency of the transmitter (116) and the receiver (126). The primary and secondary communication protocol messages are in accordance with first and second standards such as 802.11 a and later standards such as 802.11 n. The receiver (126) is able to detect the primary or secondary communication protocol message in case of the receiver (126) being in accordance with the first or second standard. The secondary message is embedded in the primary message via a modulation or via a selection of a subset of a set of a modulation constellation.

公开(公告)号：EP1440437B1

公开(公告)日：2006-03-22

申请号：EP02772646.2

申请日：2002-09-23

申请人： Koninklijke Philips Electronics N.V. ,  SONY CORPORATION

发明人： SCHEP, Cornelis, M. ,  STEK, Aalbert ,  BAGGEN, Constant, P., M., J. ,  VANHOOF, Koen ,  YAMAGAMI, Tamotsu ,  KOBAYASHI, Shoei ,  KOBAYASHI, Nobuyoshi ,  IIMURA, Shinichiro

IPC分类号： G11B9/00 ,  G11B7/00

CPC分类号： G11B27/24 ,  G11B7/00 ,  G11B7/007 ,  G11B7/0938 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2545 ,  G11B2220/2562

摘要： A record carrier is described that has a servo track (4) indicating an information track (9) intended for recording information blocks. The servo track (4) has a periodic variation of a physical parameter at a predetermined frequency and modulated parts for encoding position information at regular intervals. The modulated parts start with a bit sync element and are of a data type having a data bit element or of a word sync type having a word sync element. The bit sync element, word sync element and the data bit element being modulated according to a same predetermined type of modulation of the periodic variation. The distances between all elements constituting the modulated parts are unique. Further a device for reading and/or writing the record carrier is described.

公开(公告)号：EP2281205A1

公开(公告)日：2011-02-09

申请号：EP09746236.0

申请日：2009-05-11

申请人： Koninklijke Philips Electronics N.V.

发明人： CHEN, Ningjiang ,  KIM, Sheng ,  VAN DEN DUNGEN, Wilhelmus, A., M., A., M. ,  BAGGEN, Constant, P., M., J. ,  DOORNBOS, Richard, M., P.

IPC分类号： G01P13/00 ,  G01P15/08 ,  G08B21/02

CPC分类号： A61B5/1117 ,  A61B2560/0209 ,  A61B2562/0219 ,  G01P1/127 ,  G01P13/00 ,  G01P15/08 ,  G06F1/3215 ,  G06F1/3293 ,  G08B21/0446 ,  G08B29/183 ,  Y02D10/122

摘要： There is provided a fall detection system, comprising a passive vibration sensor; one or more other sensors for detecting respective characteristics of a fall; and a processor for analyzing measurements from the one or more other sensors to determine if a fall has occurred; wherein the system is configured to selectively provide power to the one or more other sensors and/or processor in response to the passive vibration sensor detecting motion of a user of the fall detection system.

摘要翻译： 提供了一种坠落检测系统，包括被动振动传感器; 用于检测坠落的各个特征的一个或多个其它传感器; 以及用于分析来自所述一个或多个其它传感器的测量值以确定是否发生跌落的处理器; 其中所述系统被配置为响应于被动振动传感器检测所述跌倒检测系统的用户的运动而选择性地向所述一个或多个其他传感器和/或处理器提供电力。

公开(公告)号：EP1754352A1

公开(公告)日：2007-02-21

申请号：EP05738582.5

申请日：2005-05-23

申请人： Koninklijke Philips Electronics N.V.

发明人： BAGGEN, Constant, P., M., J. ,  HUSEN, Sri, A. ,  STASSEN, Maurice, L., A. ,  TSANG, Hoi, Y.

IPC分类号： H04L25/02 ,  H04L27/26

CPC分类号： H04L25/0232 ,  H04L25/022 ,  H04L25/0256 ,  H04L27/2602 ,  H04L27/2647 ,  H04L2025/03496

摘要： A method of signal processing and a signal processor for a receiver for OFDM encoded digital signals. The OFDM encoded digital signals are transmitted as data symbol sub-carriers in several frequency channels. A subset of said sub carriers is in the form of pilot sub-carriers having a value known to the receiver. A first estimation of channel coefficients (H0) at said pilot sub-carriers is performed followed by cleaning of the estimated channel coefficients (H0) at the pilot sub-carriers. Then, a second estimation of channels coefficients (H1) is performed at the data symbol sub-carriers. The first estimation is performed by dividing received symbols (yp) at said pilot sub-carriers by the known pilot symbols (ap). the channel frequency response is supposed to vary linearly within one OFDM symbol. Therefore for each symbol and sub-band, a channel frequency response and its derivate are calculated or interpolated.

公开(公告)号：EP1399819A2

公开(公告)日：2004-03-24

申请号：EP02720402.3

申请日：2002-04-12

申请人： Koninklijke Philips Electronics N.V.

发明人： GAPPISCH, Steffen ,  BAGGEN, Constant, P., M., J. ,  SLENTER, Andre, G., J. ,  GELKE, Hans-Joachim

IPC分类号： G06F11/10

CPC分类号： G06F11/1068

摘要： A system (70) comprising a microprocessor (74), a data bus (75) for writing data into a Flash memory device (71) and a data bus (75) for reading data from the Flash memory device (71). The Flash memory device (71) comprises an error correction encoder (72), a Flash memory (71), an error correction decoder (73), and a Flash data bus (75) for interconnecting the error correction encoder (72), the Flash memory (71), and the error correction decoder (73). The data, when being processed by the error correction encoder (72) are converted into a word that comprises a status word (51), a data word (52), and a redundancy word (53). This approach enables error correction with single-bit alterability.

公开(公告)号：EP1371161A2

公开(公告)日：2003-12-17

申请号：EP01982476.2

申请日：2001-11-06

申请人： Koninklijke Philips Electronics N.V.

发明人： EGNER, Sebastian ,  BAGGEN, Constant, P., M., J. ,  VAN DIJK, Marten, E.

IPC分类号： H04J3/06

CPC分类号： H04J3/0605 ,  G11B27/3027 ,  G11B2220/2545 ,  G11B2220/2562

摘要： The invention relates to a method for generating a serial bitstream comprising information for synchronizing the serial bitstream internally and/or to another serial bitstream and/or for determining the position in the serial bitstream wherein a fixed code pattern is embedded in the serial bitstream. In order to retrieve a synchronization information or to determine the position in the serial bitstream very fast after the start of reading the serial bitstream and at any time during reading the serial bitstream it is provided according to the invention that the code pattern is periodically repeated in the serial bitstream and that any sequence of a fixed number of successive bits of the code pattern forms a unique code word allowing for synchronization and/or position determination, even under the occurrence of bit errors. The invention also refers to a corresponding device, to a binary signal comprising a serial bitstream, to a record carrier carrying such a binary signal and to a method and device for reading such a binary signal.