公开(公告)号：EP3446408B1

公开(公告)日：2020-12-02

申请号：EP17717541.1

申请日：2017-03-17

申请人： QUALCOMM Incorporated

发明人： SUN, Jing ,  YOO, Taesang ,  LUO, Tao

IPC分类号： H04B7/0413 ,  H04L23/00 ,  H04L5/00 ,  H04L1/18

公开(公告)号：EP1157475B1

公开(公告)日：2008-07-16

申请号：EP00903326.7

申请日：2000-01-18

申请人： Silicon Laboratories, Inc.

发明人： OKUNEV, Yuri ,  DRUCKER, Vitaly ,  WANG, Qin ,  GOLDSTEIN, Yuri

IPC分类号： H04B1/38 ,  H04B14/04 ,  H04L23/02 ,  H04L27/10 ,  H04L27/04 ,  H04L27/36 ,  H04L27/20 ,  H04L23/00 ,  H04J3/12

CPC分类号： H04J3/125 ,  H04B14/048 ,  H04L25/4927

摘要： A method in a modem having a frame having a plurality of slots, for determining whether incoming DIL sequence information contains A-law or mu-law is provided. From the DIL sequence information, an ordered table of levels for each slot is generated. The levels of all non-robbed-bit slots are averaged, and average levels are subjected to an A-law/mu-law separation function. The separation function F1(n1,n2)=sum from i=n1 to i=n2 {L(i) - 2* [L(i-16]} effectively compares values of a first plurality of levels L(i) to twice the values of a second plurality of levels sixteen levels removed from the first plurality of levels (420). The sum is compared to a threshold (430), as the sum will be small for A-law values and large for mu-law values.

公开(公告)号：EP1389777A2

公开(公告)日：2004-02-18

申请号：EP03017878.4

申请日：2003-08-05

申请人： Kabushiki Kaisha Toshiba

发明人： Tsumagari, Yasufumi, Toshiba Corporation ,  Mimura, Hideki, Toshiba Corporation

IPC分类号： G11B19/12 ,  G11B20/00 ,  H04L23/00

CPC分类号： G11B27/329 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/10 ,  G11B27/105 ,  G11B27/11 ,  G11B2220/2562 ,  H04N5/765 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/8063 ,  H04N9/8227

摘要： An optical disk apparatus has a control portion for, based on address information and authentication information read out from an optical disk, providing access to a specific server via a communication line, thereby acquiring extensible information, and a reproducing portion for reproducing and outputting the acquired extensible information. In this optical disk apparatus, if an optical disk is not provided, authentication processing cannot be carried out, and extensible information cannot be acquired. Thus, extensible information can be reproduced with security.

公开(公告)号：EP1389382A4

公开(公告)日：2004-02-18

申请号：EP98960624

申请日：1998-12-02

申请人： TELCORDIA TECH INC

发明人： BANWELL THOMAS C ,  CHEUNG NIM K

IPC分类号： H04L7/02 ,  H04L7/027 ,  H04L7/033 ,  H04L25/02 ,  H04L23/00

CPC分类号： H04L25/0262 ,  H04L7/027 ,  H04L7/0334

摘要： Methods and apparatuses consistent with the present invention recover a clock signal (160) from a variable bit rate data signal by estimating, in the time domain, the bit rate of the data signal, and based on the estimated variable bit rate, determining a center frequency of a narrow-band filter (330) for extracting the clock signal from the data signal (155). A clock recovery circuit (300) consistent with the present invention extracts a clock signal from a variable bit rate data signal by estimating a minimum time interval between transition (320) in the data signal, generating a plurality of pulses that correspond respectively to transitions in the data signal, adjusting the duration of each of the pulses based on the estimated minimum time interval (310) and inputting into a narrow-band filter (320) the adjusted pulses (RS2), determining the center frequency of the narrow-band filter (320) based on the estimated minimum time interval, and extracting in the narrow-band filter (320) the clock signal (160) from the adjusted pulses.

摘要翻译： 根据本发明的方法和设备通过在时域中估计数据信号的比特率并基于估计的可变比特率来从可变比特率数据信号中恢复时钟信号（160），从而确定中心 用于从数据信号（155）提取时钟信号的窄带滤波器（330）的频率。 符合本发明的时钟恢复电路（300）通过估计数据信号中转换（320）之间的最小时间间隔，从可变比特率数据信号中提取时钟信号，产生多个脉冲，分别对应于 所述数据信号基于估计的最小时间间隔（310）调整每个脉冲的持续时间并将调整的脉冲（RS2）输入到窄带滤波器（320）中，确定窄带滤波器的中心频率 （320），并且从所述调整后的脉冲中提取所述时钟信号（160）在所述窄带滤波器（320）中。

公开(公告)号：EP0847641A4

公开(公告)日：2000-02-23

申请号：EP96930654

申请日：1996-08-30

申请人： MOTOROLA INC

发明人： DUPONT PIERRE B ,  GERHARDS RONALD H ,  SPEAR STEPHEN LEE

IPC分类号： H04L1/00 ,  H04W72/08 ,  H04L23/00

CPC分类号： H04L1/0015 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0027 ,  H04W72/08 ,  Y02D50/10

摘要： In one embodiment a system is provided for multirate communications allowing for different data rates for each data unit on a channel, including both data units from different mobile units and from the same mobile unit. A sending unit preferably begins by determining the rate at which to start communications, and monitors, for example by use of an RSSI detector, for an indication that the rate should be changed. A rate adjustor implements the change, and can make changes as frequently as every data unit. The encoder applies the appropriate rate and inserts a rate indicator indicative of the data or encoding rate, and sends the data unit. On receiving data units, the receiving unit first determines the rate for each data unit or group of units, then appropriately decodes the data unit(s). As a result, the actual data throughput can be adjusted to permit optimized throughput.

公开(公告)号：EP0676096A4

公开(公告)日：1999-08-25

申请号：EP94930438

申请日：1994-09-16

申请人： MOTOROLA INC

发明人： LIM RICARDO ,  DUTKIEWICZ MAREK

IPC分类号： H04L27/00 ,  H03D1/00 ,  H04L23/00 ,  H04L27/06

CPC分类号： H04L27/0008

摘要： A data demodulation logic unit (200) and method used therein, adaptable to multiple data protocols, including an arithmetic logic unit (205) that is architecturally optimized to demodulate multiple data protocols under the control of a hardware based state machine (209) that operates in a selectable mode that corresponds to one of multiple data protocols.

公开(公告)号：EP0076844B1

公开(公告)日：1987-07-22

申请号：EP82901654.2

申请日：1982-04-13

申请人： NCR CORPORATION

发明人： GUNDERSON, Robert Ogden ,  KOCOL, James Edward ,  SCHUCK, David Burton

IPC分类号： H04J3/00 ,  H04L23/00

CPC分类号： H04L12/44

摘要： A data processing system includes a plurality of stations (412), first and second star couplers (416A, 416B) and first and second pairs of transmission lines (414A, 414B) associated with each station (412). The first pair of transmission lines (414A) is connected between its associated station (412) and the first star coupler (416A) and the second pair of transmission lines (414B) is connected between its associated station (412) and the second star coupler (416B). Each pair of transmission lines includes a first transmission line (418A, 418B) for carrying signals from its associated station (412) and a second transmission line (420A, 420B) for carrying signals to its associated station (412). Each station (412) includes a plurality of subsystems (424A, 424B, 424C), coupled by respective interface circuits (428) to both pairs of transmission lines. The system provides reduced transmission interference and high reliability. The star couplers are preferably optical but may be electrical or magnetic star couplers.

摘要翻译： 数据处理系统包括与每个站（412）相关联的多个站（412），第一和第二星形耦合器（416A，416B）以及第一和第二对传输线（414A，414B）。 第一对传输线（414A）连接在其相关站（412）和第一星形耦合器（416A）之间，第二对传输线（414B）连接在其相关站（412）和第二星形耦合器 （416B）。 每对传输线包括用于承载来自其相关站（412）的信号的第一传输线（418A，418B）和用于将信号传送到其关联站（412）的第二传输线（420A，420B）。 每个站（412）包括由相应的接口电路（428）耦合到两对传输线的多个子系统（424A，424B，424C）。 该系统提供降低的传输干扰和高可靠性。 星形耦合器优选是光学的，但是可以是电或磁性星形耦合器。

公开(公告)号：EP2137828A1

公开(公告)日：2009-12-30

申请号：EP08736843.7

申请日：2008-04-16

申请人： Nokia Corporation

发明人： SIVONEN, Pete ,  VILANDER, Ari

IPC分类号： H04B1/30 ,  H04B1/06 ,  H04L23/00

CPC分类号： H03F3/45179 ,  H03F3/195 ,  H03F3/4508 ,  H03F2200/294 ,  H03F2200/456 ,  H03F2203/45306 ,  H03F2203/45352 ,  H03F2203/45364 ,  H03F2203/45554

摘要： A transconductor input circuit for a downconverting quadrature mixer stage of a direct-conversion receiver comprises a parr of common-gate input transistors whose source electrodes are coupled to a differential radio frequency (RF) input signal outputted from an interstage RF filter. The transconductor circuit further comprises a pair of equally sized biasing transistors for biasing the pair of common-gate input transistors. Source electrodes of the biasing transistors are coupled to the source electrodes of the transistors to sense the differential radio frequency input signal for canceling intermodulation distortion.

公开(公告)号：EP1410517A4

公开(公告)日：2009-05-13

申请号：EP02740985

申请日：2002-06-25

申请人： NOKIA CORP

发明人： KWAN RAYMOND ,  POUTIAINEN EEVA ,  HAMALAINEN SEPPO ,  MALKAMAKI ESA

IPC分类号： H04B7/26 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/20 ,  H04L29/08 ,  H04B1/69 ,  H04B1/707 ,  H04L23/00

CPC分类号： H04L1/0016 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/16 ,  H04L1/1819 ,  H04L1/20 ,  Y02D50/10

摘要： A two-dimensional optimization between adaptive modulation and coding (AMC) and multi-code transmission targets the best bit rate at which a highest useable modulation and coding scheme (MCS) achieves a maximum allowed number of channelization codes or less. The optimized MCS and number of channelization codes at a best bit rate is communicated from a transmitter to a receiver, possibly also with power information for instance using a transport format combination indicator (TFCI). A user equipment may play the role of carrying out the optimization and signaling the result to the Node B or may instead receive the result as carried out by the Node B or RNC in response to a radio link quality measurement sent from the UE to the Node B.

公开(公告)号：EP1532785A1

公开(公告)日：2005-05-25

申请号：EP03761115.9

申请日：2003-06-19

申请人： Thomson Licensing S.A.

发明人： ZHANG, Junbiao ,  LI, Jun ,  RAMASWAMY, Kumar

IPC分类号： H04L23/00

CPC分类号： H04N7/17318 ,  H04N5/4401 ,  H04N5/765 ,  H04N21/234327 ,  H04N21/2662 ,  H04N21/4126 ,  H04N21/41407 ,  H04N21/4263 ,  H04N21/43637 ,  H04N21/440281 ,  H04N21/4621 ,  H04N21/4622 ,  H04N21/6131 ,  H04N21/64792 ,  H04W4/00 ,  H04W4/06 ,  H04W28/14 ,  H04W28/22 ,  H04W48/18 ,  H04W88/06

摘要： There is provided a method for managing the downloading and display of a video program using a mobile device in an networking environment that includes a first radio access network and a second radio access network that has a faster transfer rate than the first network. A layer of video program that has been encoded into multiple layers is downloaded via the first or second network. The downloaded video program is displayed at a playback rate that corresponds to a display quality. Excess portion of the downloaded video program that result when a rate at which the video program is displayed are buffered. The number of layers being downloaded and the playback rate at which the video program is displayed are increased to increase the display quality, when the buffered excess portions exceeds a threshold level.