公开(公告)号：EP1442598A1

公开(公告)日：2004-08-04

申请号：EP02798101.8

申请日：2002-08-29

申请人： Broadcom Corporation

发明人： DEMAS, Jason ,  BHATIA, Sandeep ,  KELLERMAN, Marcus ,  HUMLANI, Girish, R. ,  REDDY, Srinivasa, Mogathala, Prabhakara ,  RAO, Arun, Gopalakrishna ,  CHEN, Xuemin ,  WALLS, Frederick, George

IPC分类号： H04N7/24

CPC分类号： H04N21/4385 ,  G06T9/004 ,  H04N21/4147 ,  H04N21/4348 ,  H04N21/6587 ,  H04N21/8455

摘要： Command packets for personal video recorder. A transport stream (TS) contains data and also includes a transport packet (TP)/TS formatted command packets. The TP/TS formatted command packet may be communicated between any number of devices, including multiple chips, multiple boards, and multiple processors. A decoder is able to decode the TP/TS formatted command packet and to perform the appropriate operation on data portions of the TS. When a TS is provided to a device not having the capability to perform the proper decoding of the TP/TS formatted command packet, that particular packet may be deemed as being unidentified (or unknown) adaptation field data. Alternatively, the packet may be identified as being corrupted data and/or irrelevant data. The command packets may be encoded into command packets of the transport stream in such a way that it is backward compatible with previous systems.

公开(公告)号：EP1440540A2

公开(公告)日：2004-07-28

申请号：EP02778342.2

申请日：2002-09-26

申请人： Broadcom Corporation

发明人： LANSING, Shane ,  PANTELIAS, Niki ,  VU, Young ,  GOMEZ, Francisco, J.

IPC分类号： H04L12/54

CPC分类号： H04L47/10 ,  H04L12/2801 ,  H04L12/4604 ,  H04L47/14 ,  H04L47/2441 ,  H04L47/28 ,  H04L47/29 ,  H04L47/32 ,  H04L65/80

摘要： A method and system (Fig. 1) for dropping lower priority packets for transmission over a communication medium (106, 108) is provided. A cable modem termination system (102) receives one or more packets to be transferred to one or more data providers (104), each packet having a priority. Then, based on the priority, a media access controller (112) stores each of the packets in one or more priority queues in a fixed shared memory space (114) in such a way as to maintain the order in which the packets were received in each of the priority queues. The media access controller (112) monitors the number of packets in each of the priority queues and signals an interrupt when a packet threshold is exceeded in one or more of the priority queues. The media access controller (112) then drops lower priority packets in the fixed shared memory space (114) based on the order received to guarantee that there is enough memory to store higher priority packets in the fixed shared memory space (114).

公开(公告)号：EP1367709A3

公开(公告)日：2004-07-21

申请号：EP03012507.4

申请日：2003-06-02

申请人： Broadcom Corporation

发明人： Wakayama, Myles H.

IPC分类号： H03D7/16

CPC分类号： H03L7/185 ,  H03D7/161 ,  H03L7/07 ,  H03L7/10 ,  H03L7/1976

摘要： A double-conversion tuner receives an RF signal having a number of channels and down-converts a selected channel from the plurality of channels. The double-conversion tuner includes a first mixer configured to up-convert the RF signal to a first IF signal using a first local oscillator signal. A first local oscillator includes a delta-sigma fractional-N phase lock loop to produce the first local oscillator signal. The delta-sigma fractional-N phase lock loop is configured to perform fine-tuning of the first local oscillator signal and to have a wide tuning range sufficient to cover the number of channels. A bandpass filter is configured to select a subset of channels from said first IF signal. A second mixer is configured to down-convert the subset of channels to a second IF signal using a second local oscillator signal. A second local oscillator generates the second local oscillator signal. The second local oscillator is configured to perform coarse frequency tuning of the second local oscillator signal and has a narrow tuning range relative to said first local oscillator. The delta-sigma fractional-N phase lock loop in the first local oscillator permits implementation of a double-conversion tuner with improved phase noise for a given amount of power and complexity.

公开(公告)号：EP1315150A3

公开(公告)日：2004-07-21

申请号：EP02256895.0

申请日：2002-10-03

申请人： Broadcom Corporation

发明人： Chen, Juin-Hwey ,  Thyssen, Jes

IPC分类号： G10L19/14

CPC分类号： G10L19/26

摘要： A filter controller processes a decoded speech (DS) signal. The DS signal has a spectral envelope including a first plurality of formant peaks having different respective amplitudes. The controller produces, from the DS signal, a spectrally-flattened DS signal that is a time-domain signal. The spectrally-flattened time-domain DS signal has a spectral envelope including a second plurality of formant peaks. Each of the second plurality of formant peaks approximately coincides in frequency with a respective one of the first plurality of formant peaks. Also, the second plurality of formant peaks have approximately equal respective amplitudes. Next, the controller derives, from the spectrally-flattened time-domain DS signal, a set of filter coefficients representative of a filter response that is to be used to filter the DS signal.

公开(公告)号：EP1391927A3

公开(公告)日：2004-07-14

申请号：EP03018920.3

申请日：2003-08-20

申请人： Broadcom Corporation

发明人： Rakshani, Vafa James

IPC分类号： H01L23/485 ,  H01L23/50 ,  H01L27/118

CPC分类号： H01L24/06 ,  H01L23/50 ,  H01L24/05 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/04042 ,  H01L2224/05554 ,  H01L2224/05556 ,  H01L2224/05599 ,  H01L2224/48091 ,  H01L2224/4813 ,  H01L2224/48463 ,  H01L2224/49174 ,  H01L2224/49431 ,  H01L2224/85399 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01068 ,  H01L2924/01077 ,  H01L2924/14 ,  H01L2224/45099

摘要： Multi-concentric pad (MCP) arrangements provide for increased pad densities on integrated circuits. The multi-concentric pad (MCP) configuration includes a first set of input output (IO) pads and a second set of IO pads, both disposed on an integrated circuit die. Each IO pad in said first set and said second set of IO pads includes a bond pad for receiving a bond wire connection, and an IO circuit coupled to the bond pad. The IO circuits provide an interface between a signal received at the corresponding bond pad and a core circuit disposed on said IC die. The first set of IO pads are arranged closer to the perimeter of the IC die than the second set of IO pads. Furthermore, the second set of IO pads are arranged so that each IO circuit in the second set of IO pads is closer to the center of the IC die than a corresponding IO circuit in the first set of IO pads.

摘要翻译： 多同心衬垫（MCP）布置提供了集成电路上增加的衬垫密度。 多同心焊盘（MCP）配置包括均设置在集成电路管芯上的第一组输入输出（IO）焊盘和第二组IO输入焊盘。 所述第一组和所述第二组IO垫中的每个IO垫包括用于接收键合线连接的键合焊盘，以及耦合到键合焊盘的IO电路。 IO电路提供在相应接合焊盘处接收到的信号与布置在所述IC管芯上的​​核心电路之间的接口。 第一组IO垫布置成比第二组IO垫更接近IC裸片的周边。 此外，第二组IO垫被布置为使得第二组IO垫中的每个IO电路比第一组IO垫中的对应IO电路更靠近IC管芯的中心。

公开(公告)号：EP1429505A1

公开(公告)日：2004-06-16

申请号：EP03024384.4

申请日：2003-10-24

申请人： Broadcom Corporation

发明人： Berard, Richard, S.

IPC分类号： H04L25/03 ,  H04B7/005 ,  H04L27/36

CPC分类号： H04W52/24 ,  H04L27/367

摘要： The present invention relates to a system and method for improving the waveform at a receiver. More specifically, the present invention relates to a system adapted to modify at least one signal in anticipation of channel attenuation and delay. The present invention comprises a memory adapted to store at least one coefficient that is pre-determined based on at least one expected degradation characteristic of a channel; and a pre-emphasizer communicating with at least the memory and the channel, and adapted to modify the at least one signal using the at least one coefficient prior to transmission of the at least one signal over the channel, compensating for the at least one expected degradation characteristic.

摘要翻译： 本发明涉及一种改善接收机波形的系统和方法。 更具体地，本发明涉及适于在预期信道衰减和延迟的情况下修改至少一个信号的系统。 本发明包括适于存储基于信道的至少一个预期劣化特性而预先确定的至少一个系数的存储器; 以及预加重器，其至少与所述存储器和所述通道进行通信，并且适于在通过所述通道发送所述至少一个信号之前使用所述至少一个系数来修改所述至少一个信号，补偿所述至少一个预期的 退化特性。

公开(公告)号：EP1429487A2

公开(公告)日：2004-06-16

申请号：EP03028244.6

申请日：2003-12-09

申请人： Broadcom Corporation

发明人： Chang, Li Fung ,  Wang, Yongqian

IPC分类号： H04L1/18

CPC分类号： H04L1/0059 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1829 ,  H04L1/1835 ,  H04L1/1845 ,  H04L1/203 ,  H04L1/208 ,  H04L25/03006 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/0008 ,  H04L2025/03401 ,  H04L2025/03407 ,  H04L2025/03726 ,  H04L2027/0038

摘要： A system for implementing Incremental Redundancy (IR) operations in a wireless receiver includes at least one processing device, an IR processing function, and IR memory. The at least one processing device is operable to receive analog signals corresponding to a data block, to sample the analog signals to produce samples, to equalize the samples to produce soft decision bits corresponding to the data block, and to initiate IR operations. The IR processing function is operable to perform IR operations on the soft decision bits of the data block in an attempt to correctly decode the data block. The IR memory operably couples to the IR processing function, includes Type I IR memory adapted to store IR status information of the data block, and includes Type II IR memory adapted to store the data block.

摘要翻译： 用于在无线接收机中实现增量冗余（IR）操作的系统包括至少一个处理设备，IR处理功能和IR存储器。 所述至少一个处理装置可操作以接收对应于数据块的模拟信号，以对模拟信号进行采样以产生样本，以使样本均衡以产生与该数据块相对应的软判决位，并发起IR操作。 IR处理功能可操作以对数据块的软判决位执行IR操作，以试图正确解码数据块。 IR存储器可操作地耦合到IR处理功能，包括适于存储数据块的IR状态信息的I型IR存储器，并且包括适于存储数据块的II型IR存储器。

公开(公告)号：EP1427164A2

公开(公告)日：2004-06-09

申请号：EP03028115.8

申请日：2003-12-05

申请人： Broadcom Corporation

发明人： Buer, Mark ,  McDaniel, Scott

IPC分类号： H04L29/06

CPC分类号： H04L63/0485 ,  H04L29/06 ,  H04L29/12009 ,  H04L29/12839 ,  H04L61/6022 ,  H04L63/0853 ,  H04L63/123 ,  H04L69/16 ,  H04L69/161 ,  H04L69/22

摘要： Methods and associated systems are disclosed for providing secured data transmission over a data network. Data to be encrypted and encryption information may be sent to a security processor via a packet network so that the security processor may extract the encryption information and use it to encrypt the data. The encryption information may include flow information, security association and/or other cryptographic information, and/or one or more addresses associated with such information. The encryption information may consist of a tag in a header that is appended to packets to be encrypted before the packets are sent to the security processor. The packet and tag header may be encapsulated into an Ethernet packet and routed via an Ethernet connection to the security processor.

摘要翻译： 公开了用于通过数据网络提供安全数据传输的方法和相关系统。 要加密的数据和加密信息可以经由分组网络发送到安全处理器，使得安全处理器可以提取加密信息并将其用于加密数据。 加密信息可以包括流信息，安全关联和/或其他加密信息，和/或与这些信息相关联的一个或多个地址。 加密信息可以包括在分组被发送到安全处理器之前附加到要加密的分组的报头中的标签。 分组和标签报头可以被封装成以太网分组，并且经由以太网连接路由到安全处理器。

公开(公告)号：EP1396948A3

公开(公告)日：2004-05-26

申请号：EP03020002.6

申请日：2003-09-03

申请人： Broadcom Corporation

发明人： Dale, Mark ,  Hartman, David ,  Lin, Dorothy ,  Brescia, Rocco J., Jr. ,  Gin, Alan ,  Bhaskaran, Ravi ,  Chien, Jen-chieh ,  Fanous, Adel

IPC分类号： H04B7/185

CPC分类号： H04B7/18513

摘要： A system and method for minimizing the frequency error of satellite modem signals at a satellite gateway. The gateway downstream baud (symbol) clock and the elements that control the upstream frequency ( i.e ., local oscillators in the conversion chain, A/D sample clocks) are locked to a common frequency reference. The gateway sends upstream satellite frequency offset information, such as satellite ephemeris data from which to calculate Doppler offset, to the satellite modem. The satellite modem locks the frequency of the satellite modems master oscillator to the recovered baud rate using a frequency locked loop. The satellite modem uses its master oscillator as the carrier reference for the upstream frequency up conversion. The satellite modem uses or calculates the upstream satellite frequency offset and compensates for this offset by shifting its center frequency.

公开(公告)号：EP1355486A3

公开(公告)日：2004-05-26

申请号：EP03007697.0

申请日：2003-04-03

申请人： Broadcom Corporation

发明人： Dang, Cynthia ,  Monroe, Jason ,  Kaylani, Tarek

IPC分类号： H04N5/00

CPC分类号： H04N21/4147 ,  H04N5/4401 ,  H04N5/76 ,  H04N5/765 ,  H04N5/775 ,  H04N5/781 ,  H04N21/42661

摘要： A system for implementing personal video recording, in which integrated drive electronics are incorporated in set-top box logic, instead of with a hard disk drive. This allows the set-top box logic to communicate directly to the hard disk, so that no intervening bus is necessary.