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40 条记录 (耗时 0.03 秒)

    Dual purpose HDTV/NTSC receiver
    1.
    发明授权
    Dual purpose HDTV/NTSC receiver 失效
    双用途HDTV / NTSC接收机

    公开(公告)号：US5173774A

    公开(公告)日：1992-12-22

    申请号：US629523

    申请日：1990-12-18

    申请人： Wayne E. Bretl ,  Paul A. Snopko

    发明人： Wayne E. Bretl ,  Paul A. Snopko

    IPC分类号： H04N5/44 ,  H04N5/46

    CPC分类号： H04N5/46 ,  H04N7/012

    摘要： A dual purpose receiver can receive and process either 525-line NTSC signals or 787.5-line HDTV signals without the use of costly interlace-to-progressive scan conversion circuitry. The 525-line signal can either be stored a line at a time and repeated twice to create a 1575-line format, or it can also interpolate values based on the two adjacent received lines to create a form of averaging in the 1575-line format. The invention is not restricted to use with NTSC/HDTV systems.

    摘要翻译： 双用途接收机可以接收和处理525行NTSC信号或787.5行HDTV信号，而无需使用昂贵的交错逐行扫描转换电路。 525行信号可以一次存储一行，重复两次以创建1575行格式，或者也可以根据两个相邻的接收行内插值，以创建1575行格式的平均形式 。 本发明不限于与NTSC / HDTV系统一起使用。

    MPEG on screen display coder for DTV interfaces
    2.
    发明授权
    MPEG on screen display coder for DTV interfaces 有权
    用于DTV接口的MPEG屏幕显示编码器

    公开(公告)号：US07327790B1

    公开(公告)日：2008-02-05

    申请号：US09330769

    申请日：1999-06-11

    申请人： Wayne E. Bretl ,  Mark Fimoff ,  Paul A. Snopko

    发明人： Wayne E. Bretl ,  Mark Fimoff ,  Paul A. Snopko

    IPC分类号： H04N7/18

    CPC分类号： H04N5/44508 ,  H04N21/4316 ,  H04N21/4383 ,  H04N21/4402

    摘要： An MPEG on-screen display coder includes a buffer, an MPEG encoder, and a multiplexer. The buffer receives and buffers an MPEG transport data stream containing frames of a selected program and frames of a non-selected program. The MPEG encoder encodes frames of the selected program with an on-screen display. The multiplexer selectively passes to a digital television receiver the frames of the non-selected program, the encoded frames of the selected program, and original frames of the selected program.

    摘要翻译： MPEG屏幕显示编码器包括缓冲器，MPEG编码器和多路复用器。 缓冲器接收并缓冲包含所选节目的帧和未选择节目的帧的MPEG传输数据流。 MPEG编码器通过屏幕显示对所选程序的帧进行编码。 复用器选择性地向数字电视接收机传递未选择节目的帧，所选节目的编码帧以及所选节目的原始帧。

    Coding and decoding a signal modified in accordance with the feedback states of an encoder
    3.
    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：US06917655B2

    公开(公告)日：2005-07-12

    申请号：US10215081

    申请日：2002-08-08

    申请人： Mark Fimoff ,  Wayne E. Bretl

    发明人： Mark Fimoff ,  Wayne E. Bretl

    IPC分类号： H04L1/00 ,  H04L27/34 ,  H04N5/44 ,  H04N7/66 ,  H04N21/2383 ,  H04N21/438 ,  H04N1/64

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

    摘要： A data encoding system includes a modifier, an encoder, and a feedback. The modifier receives a first data stream and modifies the first data stream so as to provide a second data stream. The encoder encodes the second data stream in order to provide an output. At least a portion of the output has predetermined symbol values. A feedback from the encoder to the modifier provides encoder states to the modifier. The modifier modifies the first data stream based on the encoder states so as to facilitate the encoder in providing the portion of the output having the predetermined symbol values. A receiver receives a signal based on the output and decodes the signal.

    摘要翻译： 数据编码系统包括修改器，编码器和反馈。 修改器接收第一数据流并修改第一数据流以便提供第二数据流。 编码器对第二数据流进行编码，以提供输出。 输出的至少一部分具有预定的符号值。 从编码器到修改器的反馈为编辑器提供编码器状态。 修改器基于编码器状态修改第一数据流，以便于编码器提供具有预定符号值的输出部分。 接收机基于输出接收信号并对信号进行解码。

    Robust system for transmitting and receiving map data
    4.
    发明授权
    Robust system for transmitting and receiving map data 有权

    公开(公告)号：US06762698B2

    公开(公告)日：2004-07-13

    申请号：US10663953

    申请日：2003-09-16

    申请人： Wayne E. Bretl ,  Mark Fimoff

    发明人： Wayne E. Bretl ,  Mark Fimoff

    IPC分类号： H03M700

    CPC分类号： H04L1/0071 ,  H03M7/3082 ,  H03M13/00 ,  H04L1/0041 ,  H04L27/02 ,  H04N21/2383 ,  H04N21/4382 ,  Y02D70/10

    摘要： Frames comprise odd fields and even fields. The frame sync segments of the odd fields contains a current map specifying the location of data in frames, a next map specifying the location of data in a future frame, and a frame count designating the future frame. The frame sync segments of the even field may contain the same information. Alternatively, the frame sync segments of the odd fields contain the current map and part of the frame count, and the frame sync segments of the corresponding even fields contain the next map and the rest of the frame count. A receiver uses the map and frame count information to find data in the fields of received frames.

    Frame to field converter
    5.
    发明授权
    Frame to field converter 失效
    帧到场转换器

    公开(公告)号：US06259481B1

    公开(公告)日：2001-07-10

    申请号：US08951269

    申请日：1997-10-17

    申请人： Mark Fimoff ,  Wayne E. Bretl

    发明人： Mark Fimoff ,  Wayne E. Bretl

    IPC分类号： H04N701

    CPC分类号： H04N7/012 ,  H04N5/4401 ,  H04N21/440218

    摘要： A frame to field converter includes a converter memory and an address generator. The address generator is arranged to repetitively generate a set of line selecting address sequences and to sequentially apply the addresses of successive ones of the line selecting address sequences to the converter memory. Each line selecting address sequence has a first portion of addresses and a second portion of addresses, and no address is repeated in the first portion of each line selecting address sequence. In response to these line selecting addresses, a first group of lines is written into the converter memory in frame order, and the first group of lines is subsequently read out of the converter memory in field order as a second group of lines is written into the converter memory in frame order.

    摘要翻译： 帧到场转换器包括转换器存储器和地址发生器。 地址生成器被配置为重复地生成一组行选择地址序列，并且将顺序地将行选择地址序列的地址顺序地应用到转换器存储器。 每行选择地址序列具有地址的第一部分和地址的第二部分，并且在每行选择地址序列的第一部分中不重复地址。 响应于这些线选择地址，第一组线以帧顺序被写入转换器存储器，并且随后第二组线被写入到第一组线中，随后从第一组线以字段顺序从转换器存储器中读出 转换器内存的帧顺序。

    Two-channel compatible HDTV system
    6.
    发明授权
    Two-channel compatible HDTV system 失效
    双通道兼容HDTV系统

    公开(公告)号：US4907069A

    公开(公告)日：1990-03-06

    申请号：US201137

    申请日：1988-06-01

    申请人： Wayne E. Bretl

    发明人： Wayne E. Bretl

    IPC分类号： H04N7/46 ,  H04N11/24

    CPC分类号： H04N11/004 ,  H04N19/587

    摘要： A video signal is produced as a 37.8 MHz bandwidth high resolution signal. The system then derives a compatible NTSC signal from that signal and transmits the NTSC signal on one channel and an enhancement signal is transmitted on a second channel. The enhancement signal is produced by storing the 37.8 MHz signal, scanning it at a lower frame rate, and folding it so that the original information is retained within a normal channel width. In an HDTV receiver, the two channels are received and the signals are decoded separately then, using dot interlace techniques, combined to produce the HDTV signal having three times the horizontal and vertical resolution of a standard NTSC signal.

    摘要翻译： 产生视频信号作为37.8MHz带宽的高分辨率信号。 然后，该系统从该信号导出兼容的NTSC信号，并在一个信道上发送NTSC信号，并且在第二信道上发送增强信号。 增强信号通过存储37.8MHz信号，以较低的帧速率进行扫描并折叠，以使原始信息保持在正常信道宽度内产生。 在HDTV接收机中，接收两个信道，并且分别对信号进行解码，然后使用点交错技术组合以产生具有三倍标准NTSC信号的水平和垂直分辨率的HDTV信号。

    Stabilization network for a cathode ray tube
    7.
    发明授权
    Stabilization network for a cathode ray tube 失效
    阴极射线管稳定网络

    公开(公告)号：US4370674A

    公开(公告)日：1983-01-25

    申请号：US239969

    申请日：1981-03-03

    申请人： Fred D. Johnson ,  Michael D. Flasza ,  Wayne E. Bretl

    发明人： Fred D. Johnson ,  Michael D. Flasza ,  Wayne E. Bretl

    IPC分类号： H04N9/72 ,  H04N9/16

    CPC分类号： H04N9/72

    摘要： A stabilization network is disclosed which compensates for variable emission characteristics of a cathode in a television receiver's cathode ray tube. During the receiver's vertical interval, a variable gain video amplifier applies a black level D.C. voltage to the cathode. The resulting cathode current is sensed and compared to a low level reference current. If the cathode current does not equal the reference current, a control signal is applied to the amplifier. The amplifier responds to changing its D.C. output voltage until the cathode current is equal to the reference current. The amplifier also responds to the control signal by altering its gain so that, when a video signal is received, the cathode develops peak white currents of a given value in response to peak white portions of the video signal.

    摘要翻译： 公开了稳定网络，其补偿电视接收机的阴极射线管中的阴极的可变发射特性。 在接收机的垂直间隔期间，可变增益视频放大器将黑电平直流电压施加到阴极。 所得到的阴极电流被检测并与低电平参考电流进行比较。 如果阴极电流不等于参考电流，则控制信号被施加到放大器。 放大器响应改变直流输出电压直到阴极电流等于参考电流。 放大器还通过改变其增益来响应控制信号，使得当接收到视频信号时，阴极响应于视频信号的峰值白色部分产生给定值的峰值白电流。