利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

40 条记录 (耗时 0.025 秒)

    Error correction for digital signal transmission
    11.
    发明授权
    Error correction for digital signal transmission 失效
    数字信号传输误差校正

    公开(公告)号：US4907248A

    公开(公告)日：1990-03-06

    申请号：US99864

    申请日：1987-09-22

    申请人： Wayne E. Bretl

    发明人： Wayne E. Bretl

    IPC分类号： H04L1/00

    CPC分类号： H04L1/0059

    摘要： The system provides correction for error signals caused by noise in the transmission channel in digital signals or analog signals which have been digitized. The first or second differential of the quantized values is taken and encoded. One or more reliable update signals per data block are included in the transmitted signal. Using any difference between an update signal value and the corresponding actual received signal value, an error signal in time reverse sequence is reconstructed in the receiver. This signal is reversed and subtracted from a signal containing the error signal to produce an accurate output signal.

    摘要翻译： 该系统对已经数字化的数字信号或模拟信号中的传输信道中的噪声引起的误差信号进行校正。 采用并编码量化值的第一或第二差分。 每个数据块的一个或多个可靠的更新信号被包括在所发送的信号中。 使用更新信号值和对应的实际接收信号值之间的任何差异，在接收机中重构时间反向序列中的误差信号。 该信号被反转并从包含误差信号的信号中减去以产生精确的输出信号。

    Integrated crystal VCO
    12.
    发明授权
    Integrated crystal VCO 失效
    集成晶体VCO

    公开(公告)号：US4517533A

    公开(公告)日：1985-05-14

    申请号：US545803

    申请日：1983-10-26

    申请人： Wayne E. Bretl

    发明人： Wayne E. Bretl

    IPC分类号： H03B5/36 ,  H03D3/24 ,  H03B5/00

    CPC分类号： H03B5/36 ,  H03B2200/0026 ,  H03B5/366 ,  H03D3/241

    摘要： An integrated crystal voltage controlled oscillator (VCO) with only two terminals for the crystal network and no additional terminals for decoupling, bypass capacitors, etc., as well as no internal capacitors is disclosed. A negative feedback loop having both AC and DC gain for increased amplification stability as well as a separate positive feedback path having little or no DC gain but sufficient AC gain at the desired oscillating frequency to compensate for the negative feedback are provided in the crystal VCO which is capable of low voltage, e.g., 5 VDC, and high frequency, i.e., greater than 10 MHz, operation and thus is particularly adapted for digital applications utilizing emitter coupled logic (ECL).

    摘要翻译： 一个集成的晶体压控振荡器（VCO），只有两个晶体网络端子，没有额外的去耦端子，旁路电容等，以及没有内部电容器。 具有用于增加放大稳定性的AC和DC增益的负反馈环路以及具有很少或没有DC增益但是在期望的振荡频率下具有足够的AC增益以补偿负反馈的单独的正反馈路径在晶体VCO中提供 能够具有低电压，例如5VDC和高频，即大于10MHz的操作，因此特别适用于利用发射极耦合逻辑（ECL）的数字应用。

    E-VSB main stream packet jitter remediation
    16.
    发明授权
    E-VSB main stream packet jitter remediation 有权
    E-VSB主流包抖动补救

    公开(公告)号：US06798361B1

    公开(公告)日：2004-09-28

    申请号：US10729640

    申请日：2003-12-05

    申请人： Wayne E. Bretl ,  Timothy G. Laud

    发明人： Wayne E. Bretl ,  Timothy G. Laud

    IPC分类号： H03M700

    CPC分类号： H04N21/2383 ,  H04N21/4382

    摘要： A field transmitted by a transmitter and received by a receiver has a map indicating the number of E-VSB segments and VSB segments in the field. The E-VSB segments contain E-VSB data, and the VSB segments contain VSB data. The VSB data includes video and/or audio data. The audio data in the field is limited to a predetermined data rate when the VSB data in the field has a VSB bit rate below a predetermined threshold. This limit reduces or eliminates audio related jitter in the receiver.

    摘要翻译： 由发射机发射并由接收机接收的场具有指示场中的E-VSB段和VSB段的数目的映射。 E-VSB段包含E-VSB数据，VSB段包含VSB数据。 VSB数据包括视频和/或音频数据。 当场中的VSB数据具有低于预定阈值的VSB比特率时，该字段中的音频数据被限制为预定的数据速率。 此限制可减少或消除接收机中的音频相关抖动。

    Trellis coded modulation system for digital television signal with trellis coded data and synchronization symbols
    17.
    发明授权
    Trellis coded modulation system for digital television signal with trellis coded data and synchronization symbols 有权
    网格编码调制系统，用于具有网格编码数据和同步符号的数字电视信号

    公开(公告)号：US06687310B1

    公开(公告)日：2004-02-03

    申请号：US09321392

    申请日：1999-05-27

    申请人： Mark Fimoff ,  Richard W. Citta ,  Wayne E. Bretl

    发明人： Mark Fimoff ,  Richard W. Citta ,  Wayne E. Bretl

    IPC分类号： H04L512

    CPC分类号： H04L1/006 ,  H04L1/0054 ,  H04L27/3416 ,  H04N5/4401

    摘要： A transmitter transmits, and a receiver receives, a data frame is transmitted into an 8 MHZ channel. The data frame contains a plurality of data segments, where each of the data segments contain DS symbols. The DS symbols include data symbols, priming symbols, and segment synchronization symbols. The transmitter trellis encodes the data symbols, priming symbols, and segment synchronization symbols. The receiver trellis decodes the data symbols, priming symbols, and segment synchronization symbols. The data frame also contains a mode control ID which the receiver uses in trellis decoding the data symbols, priming symbols, and segment synchronization symbols.

    摘要翻译： 发射机发送数据帧，并且接收机接收数据帧发送到8MHZ信道。 数据帧包含多个数据段，其中每个数据段包含DS符号。 DS符号包括数据符号，引号符号和段同步符号。 发射机网格编码数据符号，引号符号和段同步符号。 接收机网格解码数据符号，引号符号和段同步符号。 数据帧还包含接收机在对数据符号，引导符号和段同步符号进行网格解码时使用的模式控制ID。

    Coding and decoding a signal modified in accordance with the feedback states of an encoder
    18.
    发明授权
    Coding and decoding a signal modified in accordance with the feedback states of an encoder 有权
    编码和解码根据编码器的反馈状态修改的信号

    公开(公告)号：US06529558B1

    公开(公告)日：2003-03-04

    申请号：US09321462

    申请日：1999-05-27

    申请人： Mark Fimoff ,  Wayne E. Bretl

    发明人： Mark Fimoff ,  Wayne E. Bretl

    IPC分类号： H04L704

    CPC分类号： H04L1/0054 ,  H04L27/3416 ,  H04N5/4401

    摘要： A transmitter transmits, and a receiver receives, a data frame is transmitted into an 8 MHZ channel. The data frame contains a plurality of data segments, where each of the data segments contain DS symbols. The DS symbols include data symbols, priming symbols, and segment synchronization symbols. The transmitter trellis encodes the data symbols, priming symbols, and segment synchronization symbols. The receiver trellis decodes the 10 data symbols, priming symbols, and segment synchronization symbols. The data frame also contains a mode control ID which the receiver uses in trellis decoding the data symbols, priming symbols, and segment synchronization symbols.

    摘要翻译： 发射机发送数据帧，并且接收机接收数据帧发送到8MHZ信道。 数据帧包含多个数据段，其中每个数据段包含DS符号。 DS符号包括数据符号，引号符号和段同步符号。 发射机网格编码数据符号，引号符号和段同步符号。 接收机网格解码10个数据符号，引号符号和段同步符号。 数据帧还包含接收机在对数据符号，引导符号和段同步符号进行网格解码时使用的模式控制ID。