专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5835730A MPEG packet header compression for television modems 失效
标题翻译：用于电视调制解调器的MPEG数据包报头压缩
公开(公告)号：US5835730A
公开(公告)日：1998-11-10
申请号：US688841
申请日：1996-07-31
申请人： Michael A. Grossman , Jonathan A. Fellows , Clive E. Holborow
发明人： Michael A. Grossman , Jonathan A. Fellows , Clive E. Holborow
IPC分类号： H04N5/44 , H04N21/434 , H01J13/00
CPC分类号： H04N5/4401 , H04N21/4143 , H04N21/4344 , H04N21/4381 , H04N21/64307 , H04N21/4382
摘要： A method and apparatus are provided for receiving a packet stream having fixed length packets. Data carried in the packet stream is selectively processed for output to a computer. A packet identifier filter selects particular packets from the recovered packet stream. A computer disk controller receives the packets selected by the filter and manages the transfer of packet data from the packets to and from a buffer. A data bus is coupled to the disk controller for communicating the packet data from the buffer to the computer. A data compression stage prior to the disk controller compresses packets from the recovered packet stream in order to provide a gap between data carried by successive packets to be provided by the disk controller. In this manner, a low cost disk controller chip can be used to control the buffering of data in a cable or satellite television modem that provides, e.g., Internet access.
摘要翻译：提供了一种用于接收具有固定长度分组的分组流的方法和装置。选择性地处理分组流中承载的数据以输出到计算机。分组标识符过滤器从恢复的分组流中选择特定分组。计算机磁盘控制器接收由过滤器选择的数据包，并管理从缓冲器到数据包和从缓冲器传送数据包数据。数据总线耦合到磁盘控制器，用于将分组数据从缓冲器传送到计算机。磁盘控制器之前的数据压缩级压缩来自恢复的分组流的分组，以便提供由盘控制器提供的连续分组携带的数据之间的间隙。以这种方式，可以使用低成本的盘控制器芯片来控制提供例如因特网访问的有线或卫星电视调制解调器中的数据的缓冲。

2. 发明授权

US5801753A Method and apparatus for providing an interactive guide to events available on an information network 失效
标题翻译：用于提供信息网络上可用事件的交互式指南的方法和装置
公开(公告)号：US5801753A
公开(公告)日：1998-09-01
申请号：US502774
申请日：1995-08-11
申请人： Mark K. Eyer , Zicheng Guo
发明人： Mark K. Eyer , Zicheng Guo
IPC分类号： G06F12/00 , G06F13/00 , G06Q10/00 , G06Q30/00 , G06Q50/00 , H04N7/16 , H04N7/173 , H04N21/235 , H04N21/236 , H04N21/262 , H04N21/433 , H04N21/434 , H04N21/435 , H04N21/84 , H04N21/845 , H04N7/14 , H04N7/08 , H04N7/084 , H04N7/087
CPC分类号： H04N21/4332 , H04N21/2362 , H04N21/26216 , H04N21/26266 , H04N21/26283 , H04N21/4221 , H04N21/42692 , H04N21/4312 , H04N21/4316 , H04N21/4331 , H04N21/4345 , H04N21/435 , H04N7/16 , H04N7/165 , H04N7/173 , H04N21/4823
摘要： Apparatus and methods are provided for implementing an interactive program guide on an information network. A plurality of database pages are communicated over the information network. Each page corresponds to a time slot over which events are available on the network. Schedule data for each event to be included in the interactive guide is inserted into the database page for the time slot during which the event is to be provided. The database pages are transmitted via the information network at a transmission rate selected to enable the recovery of a particular database page within a predetermined acquisition time limit, for retrieval of schedule data for the time represented by that page. Schedule information for a current time period can be provided in a trickle data stream with future scheduling information provided in a demand data stream. The demand data stream is transmitted at a substantially higher rate than the trickle data stream. Data from the trickle stream is downloaded into memory at the decoder for instantaneous display. Data from the demand data stream is accessible on an as needed basis by retrieving only that data necessary for the display of scheduling information for a desired time slot.
摘要翻译：提供了用于在信息网络上实现交互式节目指南的装置和方法。在信息网络上传送多个数据库页面。每个页面对应于网络上可用的事件的时隙。要包括在交互式指南中的每个事件的计划数据将插入数据库页面，以提供事件的时间段。数据库页面以选定的传输速率通过信息网络传输，以使得能够在预定的获取时间限制内恢复特定的数据库页面，以检索由该页面表示的时间的时间表数据。可以在需要数据流中提供的将来调度信息的涓流数据流中提供当前时间段的计划信息。要求数据流以比涓流数据流更高的速率发送。来自流淌流的数据被下载到解码器的存储器中，用于瞬时显示。来自需求数据流的数据可以根据需要进行访问，通过仅检索为期望的时隙显示调度信息所需的数据。

3. 发明授权

US5745522A Randomizer for byte-wise scrambling of data 失效
标题翻译：用于逐字数据加扰的随机器
公开(公告)号：US5745522A
公开(公告)日：1998-04-28
申请号：US556415
申请日：1995-11-09
申请人： Chris Heegard
发明人： Chris Heegard
IPC分类号： H04L25/03 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： H04L25/03866
摘要： An N-bit, byte-wise data randomizer uses a linear feedback shift register arrangement where each register stage stores N-bits. In this manner, a pseudorandom sequence can be generated based on a nonbinary primitive polynomial over a finite field of any desired length. In a specific disclosed embodiment, the primitive, degree three trinomial f(x)=x.sup.3 +x+.alpha..sup.3 over the finite field F.sub.128 =F.sub.2 �.alpha.!/(.alpha..sup.7 +.alpha..sup.3 +1) is implemented.
摘要翻译： N位字节数据随机化器使用线性反馈移位寄存器布置，其中每个寄存器级存储N位。以这种方式，可以在任何期望长度的有限域上基于非二进制多项式生成伪随机序列。在具体公开的实施例中，实现了有限域F128 =F2α/（α7+α3+ 1）处的原始三度三项式f（x）= x3 + x +α3。

4. 发明授权

US5739868A Apparatus for processing mixed YUV and color palettized video signals 失效
标题翻译：用于处理混合YUV和调色视频信号的装置
公开(公告)号：US5739868A
公开(公告)日：1998-04-14
申请号：US523396
申请日：1995-08-31
申请人： Donald S. Butler , Richard S. Amano
发明人： Donald S. Butler , Richard S. Amano
IPC分类号： H04N9/74 , G09G5/02 , G09G5/42 , H04N5/44 , H04N5/445 , H04N7/173 , H04N9/64 , H04N5/262
CPC分类号： H04N9/641 , G09G5/02 , G09G5/42 , H04N5/44 , G09G2340/10 , H04N5/445 , H04N7/173
摘要： Apparatus processes mixed YUV and color palettized video signals for display on an interlaced NTSC or PAL television receiver by storing first and second fields of one or more sprites in a graphic memory. Each sprite is stored as YUV or color palettized data and given a priority. A higher priority sprite overwrites pixel data of sprites of a lower priority when sprites overlap. First and second adjacent horizontal lines of pixel data in the first and second fields, respectively, are concurrently stored in respective first and second double buffers of a pixel assembly buffer during each line period. A delay buffer and the first and second double buffers generate first, second, and third adjacent horizontal lines, respectively, of pixel data at the output of the pixel assembly buffer while third and fourth adjacent horizontal lines of pixel data are inputted to the first and second double buffers. A convolving means receives the first, second, and third output signals from the pixel assembly buffer and generates therefrom an output signal providing a weighted average for a central pixel of a predetermined matrix of pixel data for transmission to the television receiver when a sprite is included in a pixel area of the television receiver. A live video signal is transmitted to the display of the television receiver when no sprite is included in a pixel area of the television receiver.
摘要翻译：设备通过将一个或多个精灵的第一和第二场存储在图形存储器中来处理混合的YUV和调色视频信号，以在隔行NTSC或PAL电视接收机上显示。每个精灵都存储为YUV或色彩调整数据并给予优先权。当精灵重叠时，较高优先级的精灵会覆盖较低优先级的精灵的像素数据。分别在第一和第二场中的像素数据的第一和第二相邻的水平行被同时存储在每个行周期期间的像素组合缓冲器的相应的第一和第二双缓冲器中。延迟缓冲器和第一和第二双缓冲器分别在像素组合缓冲器的输出处产生像素数据的第一，第二和第三相邻水平线，而第三和第四相邻水平线的像素数据被输入到第一和第二相邻的水平线，第二个双缓冲区。一个卷积装置从像素汇编缓冲器接收第一，第二和第三输出信号，并从中产生一个输出信号，该输出信号为预定的像素数据矩阵的中心像素提供一个加权平均值，以便在包括一个精灵时发送给电视接收机在电视接收机的像素区域中。当电视接收机的像素区域中没有子画面时，实时视频信号被发送到电视接收机的显示器。

5. 发明授权

US5703877A Acquisition and error recovery of audio data carried in a packetized data stream 失效
标题翻译：在分组数据流中携带的音频数据的采集和错误恢复
公开(公告)号：US5703877A
公开(公告)日：1997-12-30
申请号：US562611
申请日：1995-11-22
申请人： Ray Nuber , Paul Moroney , G. Kent Walker
发明人： Ray Nuber , Paul Moroney , G. Kent Walker
IPC分类号： G10L19/00 , H04N7/24 , H04N7/52 , H04N19/895 , H04N21/234 , H04N21/236 , H04N21/2368 , H04N21/43 , H04N21/434 , H04N21/439 , H04N21/44 , H04N21/81 , H04J3/06 , H04N7/12
CPC分类号： H04N21/4392 , H04N19/895 , H04N21/4305 , H04N21/4307 , H04N21/4341 , H04N21/8106 , G10L19/005
摘要： Audio data is processed from a packetized data stream carrying digital television information in a succession of fixed length transport packets. Some of the packets contain a presentation time stamp (PTS) indicative of a time for commencing the output of associated audio data. After the audio data stream has been acquired, the detected audio packets are monitored to locate subsequent PTS's for adjusting the timing at which audio data is output, thereby providing proper lip synchronization with associated video. Errors in the audio data are processed in a manner which attempts to maintain synchronization of the audio data stream while masking the errors. In the event that the synchronization condition cannot be maintained, for example in the presence of errors over more than one audio frame, the audio data stream is reacquired while the audio output is concealed. An error condition is signaled to the audio decoder by altering the audio synchronization word associated with the audio frame in which the error has occurred.
摘要翻译：音频数据从一系列固定长度传输分组携带数字电视信息的打包数据流处理。一些分组包含指示用于开始相关联的音频数据的输出的时间的演示时间戳（PTS）。在获取音频数据流之后，监视检测到的音频分组以定位用于调整输出音频数据的定时的后续PTS，从而与相关联的视频提供适当的唇同步。音频数据中的错误以尝试保持音频数据流的同步同时掩盖错误的方式被处理。在不能保持同步条件的情况下，例如在存在多于一个音频帧的错误的情况下，音频数据流被重新获取，同时音频输出被隐藏。通过改变与发生错误的音频帧相关联的音频同步字，向音频解码器发出错误状况。

6. 发明授权

US5627892A Data security scheme for point-to-point communication sessions 失效
标题翻译：数据安全方案，用于点对点通信会话
公开(公告)号：US5627892A
公开(公告)日：1997-05-06
申请号：US420710
申请日：1995-04-19
申请人： Marc W. Kauffman
发明人： Marc W. Kauffman
IPC分类号： H04N7/16 , H04L9/00 , H04N7/167
CPC分类号： H04N7/165
摘要： Secure point-to-point communication of information to specific terminals is provided via a shared network. Far in advance of the establishment of an information session with a particular one of a plurality of terminals, a unique session identifier is securely delivered to the terminal by a highly secure entity. Information to be provided to the terminal is subsequently encrypted under the session identifier of that terminal by an insecure connection manager. The encrypted information is inserted into designated locations in a signal multiplex. The signal multiplex is transmitted over a portion of the network serving the terminal that is to receive the information. The terminal is informed of the designated locations of the encrypted information in the signal multiplex and of a transmission frequency at which the signal multiplex is carried on the network portion. The terminal tunes to the transmission frequency to locate the signal multiplex, recovers the encrypted information from the designated locations in the multiplex, and then decrypts the information using the terminal's unique session identifier.
摘要翻译：通过共享网络提供信息到特定终端的安全点对点通信。在与多个终端中的特定一个终端建立信息会话的前提下，唯一的会话标识符被高度安全的实体安全地传送到终端。随后，通过不安全的连接管理器，在该终端的会话标识符下，对终端提供的信息进行加密。加密的信息被插入信号复用中的指定位置。信号复用通过服务于接收信息的终端的一部分网络传输。向终端通知信号复用中的加密信息的指定位置以及在网络部分上承载信号复用的发送频率。终端调谐到传输频率以定位信号复用，从多路复用中的指定位置恢复加密信息，然后使用终端的唯一会话标识符解密信息。

7. 发明授权

US5612956A Reformatting of variable rate data for fixed rate communication 失效
标题翻译：对固定利率通信的可变利率数据进行重新格式化
公开(公告)号：US5612956A
公开(公告)日：1997-03-18
申请号：US573227
申请日：1995-12-15
申请人： G. Kent Walker , Paul Moroney , Ray Nuber
发明人： G. Kent Walker , Paul Moroney , Ray Nuber
IPC分类号： H04J3/06 , H04L7/00 , H04L7/02 , H04L7/04 , H04L13/08 , H04L25/49 , H04L29/06 , H04N5/00 , H04N7/10 , H04N19/00 , H04N21/4147 , H04N21/4363 , H04N21/4402 , H04J3/22 , H04J3/26
CPC分类号： H04N21/4147 , H04J3/0632 , H04L2007/045 , H04L7/0066
摘要： Variable rate data is reformatted for communication to an external device at a fixed rate. Fixed length packets of the variable rate data are recovered from a multiplex of data packets. A packet start byte is added to the beginning of each of the recovered packets. Fill bits are added to the recovered packets as necessary to maintain the desired fixed output rate if the output rate is greater than an information rate of the variable rate data. The recovered packets with the added packet start byte and fill bits are provided as output to the external device at the fixed rate. The recovered packets with the added packet start byte and fill bits are advantageously encoded using alternate mark inversion (AMI) and binary eight zero substitution (B8ZS). The packet start byte and B8ZS substitution can comprise unique AMI violation sequences.
摘要翻译：可变速率数据被重新格式化以便以固定速率与外部设备通信。可变速率数据的固定长度分组从数据分组的复用中恢复。分组开始字节被添加到每个恢复的分组的开头。如果输出速率大于可变速率数据的信息速率，填充位将根据需要添加到恢复的数据包中，以保持所需的固定输出速率。具有添加的分组开始字节和填充比特的恢复分组以固定速率提供给外部设备的输出。具有添加的分组开始字节和填充比特的恢复的分组有利地使用交替标记反转（AMI）和二进制八进制零替换（B8ZS）进行编码。分组起始字节和B8ZS替换可以包括唯一的AMI违例序列。

8. 发明授权

US5566089A Syntax parser for a video decompression processor 失效
标题翻译：视频解压缩处理器的语法解析器
公开(公告)号：US5566089A
公开(公告)日：1996-10-15
申请号：US329500
申请日：1994-10-26
申请人： Chris Hoogenboom
发明人： Chris Hoogenboom
IPC分类号： H04N7/32 , C04B41/52 , H04N7/26 , H04N7/50 , G06F17/28
CPC分类号： C04B41/52 , H04N19/00 , H04N19/42 , H04N19/61 , H04N19/70
摘要： A video syntax parser is provided for a video decompression processor. A compressed bitstream is examined until a start code is located. The start code is decoded to enable a particular parser state corresponding thereto to be initiated. The parser state is communicated to a plurality of subsystems of the video decompression processor. Each subsystem monitors the parser state to determine which parsed data following the start code, if any, is intended for that subsystem. The subsystem then retrieves the parsed data it requires via a data bus which receives the parsed data from the parser.
摘要翻译：为视频解压缩处理器提供视频语法解析器。检查压缩比特流直到定位起始码。起始码被解码以使得能够启动与其对应的特定解析器状态。解析器状态被传送到视频解压缩处理器的多个子系统。每个子系统监视解析器状态，以确定在该子系统之后的起始代码之后的哪个解析数据（如果有的话）。然后，子系统通过从解析器接收解析数据的数据总线检索其所需的解析数据。

9. 发明授权

US5497112A Power-out reset system 失效
标题翻译：掉电复位系统
公开(公告)号：US5497112A
公开(公告)日：1996-03-05
申请号：US274046
申请日：1994-07-12
申请人： Chinh L. Hoang
发明人： Chinh L. Hoang
IPC分类号： G01R19/165 , G01R31/30 , G01R31/40 , G05F1/10 , H02J1/00 , H03K17/22
CPC分类号： H03K17/223 , G01R31/30 , G01R31/40
摘要： A power-out reset circuit includes reference voltage and current generators to generate a reference voltage and a reference current which are essentially independent of temperature variations over a useful temperature range, a delay/disable circuit, over and under voltage detectors and output logic circuitry. This circuit detects when the voltage level of a supply voltage source (+VDD) exceeds preselected limits. The reference voltage, which is related to the silicon band gap voltage, is connected to a first input of a comparator of each of the voltage detectors. The reference current, which is derived from the silicon band gap voltage, is connected to a current source of each of the detectors. Each detector has a hysteresis circuit which changes the point at which the comparator switches in the event that +VDD crosses into or outside of a preselected operating range. The delay/disable circuit ensures that the reference voltage is stable before the voltage detectors are activated, and that the voltage detectors are disabled when the supply voltage source falls below a minimum value which causes the reference voltage to be invalid (i.e., to be outside the preselected operating range. Outputs of the comparators are coupled to the output logic circuitry. The output logic circuitry includes a two input EXCLUSIVE OR logic circuit, a delay circuit, a two input OR logic gate, a transistor, a two input NOR logic gate, and an inverter.
摘要翻译：断电复位电路包括参考电压和电流发生器以产生基本上与有用温度范围上的温度变化无关的参考电压和参考电流，延迟/禁止电路，过压和欠压检测器以及输出逻辑电路。该电路检测电源电压源（+ VDD）的电压何时超过预选极限。与硅带隙电压相关的参考电压连接到每个电压检测器的比较器的第一输入端。从硅带隙电压导出的参考电流连接到每个检测器的电流源。每个检测器都有一个滞后电路，在+ VDD跨越预选工作范围或超出预设工作范围的情况下，改变比较器切换点。延迟/禁用电路确保在电压检测器被激活之前参考电压是稳定的，并且当电源电压降低到使参考电压无效的最小值（即，在外部时）时，电压检测器被禁用输出逻辑电路包括两路输入异或逻辑电路，一个延迟电路，一个二输入OR逻辑门，一个晶体管，一个二输入NOR逻辑门和逆变器。

10. 发明授权

US5408525A Diverter interface between two telecommunication lines and a station set 失效
标题翻译：两条电信线路和一组车站之间的分流器接口
公开(公告)号：US5408525A
公开(公告)日：1995-04-18
申请号：US248303
申请日：1994-05-24
申请人： Charles A. Eldering
发明人： Charles A. Eldering
IPC分类号： H04M1/00 , H04M1/738 , H04M1/82 , H04M3/428
CPC分类号： H04M3/428 , H04M1/006 , H04M1/738 , H04M1/82
摘要： A diverter interfaces first and second telecommunication lines from first and second telecommunication sources, respectively, with a third line coupled to a station set. The diverter includes separate line and set monitors and a control unit. The line and set monitors monitor and detect predetermined selective signals such as (a) ringing signals propagating on the first and second lines, and (b) line access codes, flash hook, and line change requests signals generated by the station set. In response to the detected predetermined selective signals, the line and set monitors generate first, second, and third output control signals representative of the predetermined selective signals on the first, second, and third lines, respectively, to the control unit. The control unit, which is responsive to output signals from the line and set monitors, selectively couples a predetermined one of the first and second lines directly to the third line without interfering with the predetermined selective signals and states present on the first, second, and third lines. The control unit also generates predetermined output control signals to the line and set monitors for generating output signals such as call waiting signals for transmission to the station set on the third line. The diverter is powered from the first and second lines, and its actions remain invisible to and do not affect the first and second telecommunication sources and the station set.
摘要翻译：分流器分别接合来自第一和第二电信源的第一和第二电信线路，其中第三线路耦合到站组。分流器包括单独的线路和设置监视器和控制单元。线路和设备监视器监视和检测预定的选择信号，例如（a）在第一和第二线路上传播的振铃信号，以及（b）由站组生成的线路接入码，闪存钩和线路改变请求信号。响应于检测到的预定选择信号，线路和组监视器分别产生表示第一，第二和第三线路上的预定选择信号的第一，第二和第三输出控制信号到控制单元。响应于来自线路和设置监视器的输出信号的控制单元选择性地将第一和第二线路中的预定的一条直接连接到第三线路，而不会干扰第一，第二和第二线路上存在的预定选择信号和状态第三行。控制单元还向线路产生预定的输出控制信号，并设置监视器以产生诸如呼叫等待信号之类的输出信号，以传送到设置在第三线路上的站点。分流器由第一和第二线路供电，并且其动作保持不可见并且不影响第一和第二电信源和站组。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式