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1.发明授权Compatible wide screen television system with variable image compression/expansion 失效兼容可变图像压缩/扩展的宽屏电视系统
公开(公告)号：US4730215A
公开(公告)日：1988-03-08
申请号：US869174
申请日：1986-05-30
申请人： David L. Jose , Robert A. Dischert
发明人： David L. Jose , Robert A. Dischert
CPC分类号： H04N11/006
摘要： A compressor compresses the edges of a wide screen image to provide a compressed wide screen video signal which may be displayed on a conventional 4:3 aspect ratio receiver with the compressed edge portions largely hidden from view because of receiver overscan. Complementary edge expansion restores the compressed signal to its original form for display by a wide screen receiver. The relative proportions of compression applied to the left and right edges of the wide screen images are varied to reduce the appearance of edge distortion in the compressed signal when displayed on a standard aspect ratio receiver and to reduce the appearance of loss of edge resolution in the expanded signal when displayed on a wide screen receiver.
摘要翻译： 压缩器压缩宽屏幕图像的边缘以提供压缩的宽屏视频信号，其可以在传统的4：3宽高比接收机上显示，其中由于接收机过扫描，压缩边缘部分大部分隐藏在视野之外。 互补边缘扩展将压缩信号恢复到其原始形式，以便通过宽屏幕接收器进行显示。 改变施加到宽屏幕图像的左边缘和右边缘的压缩的相对比例是变化的，以减少当在标准宽高比接收器上显示时压缩信号中的边缘失真的出现，并且减少边缘分辨率损失的出现 扩展信号显示在宽屏幕接收器上。
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2.发明授权
公开(公告)号：US4672443A
公开(公告)日：1987-06-09
申请号：US771420
申请日：1985-08-30
CPC分类号： H04N7/0122 , H04N11/006
摘要： A wide aspect ratio television system includes memories for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted to restore the signal to its original aspect ratio. The pattern of delected pulses is altered on a line-by-line basis to reduce visible artifacts of signal decimation. Dual mode receivers include provisions for controlling edge blanking, interpolation and the pattern of clock pulses deleted as a function of received signals. Wide and standard aspect ratio images are displayed without altering the width of the display raster.
摘要翻译： 大宽高比电视系统包括分别响应于读和写时钟脉冲存储和恢复视频输入信号的存储器。 写入时钟脉冲被删除以压缩宽宽比输入信号的边缘区域，并且删除读取时钟脉冲以将信号恢复到其原始宽高比。 逐行扫描的脉冲的图案被改变以减少信号抽取的可见伪像。 双模式接收器包括用于控制边沿消隐，内插和作为接收信号的函数被删除的时钟脉冲的模式的规定。 在不改变显示栅格宽度的情况下显示宽和标准宽高比图像。
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公开(公告)号：US4523105A
公开(公告)日：1985-06-11
申请号：US424264
申请日：1982-09-27
申请人： David L. Jose , Winthrop S. Pike , Jack Craft
发明人： David L. Jose , Winthrop S. Pike , Jack Craft
CPC分类号： H02M7/2173
摘要： An amplifier, including a pair of emitter coupled non-complementary transistors operated at constant emitter, base and collector potentials, provides a bidirectional output current proportional to an AC signal to be rectified. The output current is applied to a common base connection of a pair of complementary emitter-coupled base-coupled transistors having a common emitter connection coupled via a linearizing feedback resistor to the base electrode of one of the amplifier transistors and via a load to a source of reference potential. The collector potentials of the complementary transistors are regulated and a full wave rectified output signal is produced by a cascade connection of complementary current mirror amplifiers having inputs coupled to the collector electrodes of the complementary transistors and an output coupled to the point of reference potential via a further load thereby providing the combined advantages of improved linearity and dynamic range characteristic of feedback types of rectifiers and improved stability and wide bandwidth characteristic of feedforward rectifiers.
摘要翻译： 放大器，包括以恒定发射极，基极和集电极电位工作的一对发射极耦合非互补晶体管，提供与要整流的AC信号成比例的双向输出电流。 输出电流被施加到一对互补发射极耦合基极耦合晶体管的公共基极连接，其具有通过线性化反馈电阻器耦合到放大器晶体管之一的基极并经由负载到源极的公共发射极连接 的参考潜力。 互补晶体管的集电极电位被调节，并且通过具有耦合到互补晶体管的集电极的输入的互补电流镜放大器的级联连接产生全波整流输出信号，以及通过经由 进一步加载，从而提供整流器反馈类型的改进的线性度和动态范围特性的综合优点，并提高了前馈整流器的稳定性和宽带宽特性。
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4.发明授权Dual mode television receiver for displaying wide screen and standard aspect ratio video signals 失效用于显示宽屏幕和标准宽高比视频信号的双模式电视接收机
公开(公告)号：US4729012A
公开(公告)日：1988-03-01
申请号：US771551
申请日：1985-08-30
IPC分类号： H04N5/46 , H04N20060101 , H04N3/223 , H04N5/222 , H04N7/00 , H04N7/01 , H04N7/015 , H04N9/64 , H04N11/00 , H04N11/06 , H04N11/20
CPC分类号： H04N7/0122 , Y10S348/903
摘要： A wide aspect ratio television system includes memories for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted to restore the signal to its original aspect ratio. The pattern of deleted pulses is altered on a line-by-line basis to reduce visible artifacts of signal decimation. Dual mode receivers include provisions for controlling edge blanking, interpolation and the pattern of clock pulses deleted as a function of received signals. Wide and standard aspect ratio images are displayed without altering the width of the display raster.
摘要翻译： 大宽高比电视系统包括分别响应于读和写时钟脉冲存储和恢复视频输入信号的存储器。 写入时钟脉冲被删除以压缩宽宽比输入信号的边缘区域，并且删除读取时钟脉冲以将信号恢复到其原始宽高比。 删除的脉冲的模式在逐行的基础上被改变，以减少信号抽取的可见伪像。 双模式接收器包括用于控制边沿消隐，内插和作为接收信号的函数被删除的时钟脉冲的模式的规定。 在不改变显示栅格宽度的情况下显示宽和标准宽高比图像。
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