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    • 1. 发明授权
    • Reproduction error correction circuit for a video reproduction system,
and the method for operating it
    • 用于视频再现系统的再现错误校正电路及其操作方法
    • US5666458A
    • 1997-09-09
    • US667169
    • 1996-06-20
    • Byung-joon MoonSung-il ChoKi-ho Shin
    • Byung-joon MoonSung-il ChoKi-ho Shin
    • G11B20/18H04N5/76H04N9/88H04N9/885H04N9/896H04N9/89H04N5/78H04N5/95
    • H04N9/885H04N9/896
    • A reproduction error correction circuit for a video reproduction system includes a line-storage memory for temporarily storing composite video signal samples, which memory is operated to provide both for time-base correction and for drop-out compensation. The memory is cyclically supplied sequential write addresses descriptive of pixel locations along a horizontal scan line, generated at a rate that tracks any jitter in the input video signal selectively used for writing over the previous contents of the memory. The memory is cyclically supplied sequential read addresses offset 1/2 scan line from the write addresses, generated at a stable rate equal to an average over several scan lines of the rate at which write addresses are generated. This provides for time-base error correction. When a drop-out is detected, overwriting of video signal samples already stored in the single line-storage memory is prohibited. This type of overwrite protection implements automatic replacement of the video signal during periods when drop-out is detected. The phase of the chrominance signal component of the delayed video used for drop-out compensation is adjusted, however, when necessary, to correspond to that required in the replacement signal.
    • 用于视频再现系统的再现纠错电路包括用于临时存储复合视频信号样本的行存储存储器,该存储器被操作以提供时基校正和丢弃补偿两者。 存储器循环地提供顺序写入地址,其描述沿着水平扫描线的像素位置,其以跟踪选择性地用于写入存储器的先前内容的输入视频信号中的任何抖动的速率生成。 存储器循环地从写入地址循环地提供顺序读取地址偏移+ E,fra 1/2 + EE扫描线,其以等于生成写入地址的速率的几个扫描线上的平均值的稳定速率生成。 这提供了时基误差校正。 当检测到辍学时,禁止覆盖已经存储在单行存储器中的视频信号样本。 这种类型的覆盖保护在检测到辍学期间实现视频信号的自动替换。 调整用于丢失补偿的延迟视频的色度信号分量的相位,但是,如果需要,则相应于替换信号中所需的相位。
    • 2. 发明授权
    • Reproduction error correction circuit for a video reproduction system &
the method for operating it
    • 视频再现系统的再生纠错电路及其操作方法
    • US5587804A
    • 1996-12-24
    • US280770
    • 1994-07-26
    • Byung-Joon MoonSung-il ChoKi-ho Shin
    • Byung-Joon MoonSung-il ChoKi-ho Shin
    • G11B20/18H04N5/76H04N9/88H04N9/885H04N9/896H04N9/89H04N5/78H04N5/95
    • H04N9/885H04N9/896
    • A reproduction error correction circuit for a video reproduction system includes a line-storage memory for temporarily storing composite video signal samples, which memory is operated to provide both for time-base correction and for drop-out compensation. The memory is cyclically supplied sequential write addresses descriptive of pixel locations along a horizontal scan line, generated at a rate that tracks any jitter in the input video signal selectively used for writing over the previous contents of the memory. The memory is cyclically supplied sequential read addresses offset 1/2 scan line from the write addresses, generated at a stable rate equal to an average over several scan lines of the rate at which write addresses are generated. This provides for time-base error correction. When a drop-out is detected, overwriting of video signal samples already stored in the single line-storage memory is prohibited. This type of overwrite protection implements automatic replacement of the video signal during periods when drop-out is detected. The phase of the chrominance signal component of the delayed video used for drop-out compensation is adjusted, however, when necessary, to correspond to that required in the replacement signal.
    • 用于视频再现系统的再现纠错电路包括用于临时存储复合视频信号样本的行存储存储器,该存储器被操作以提供时基校正和丢弃补偿。 存储器循环地提供顺序写入地址,其描述沿着水平扫描线的像素位置,其以跟踪选择性地用于写入存储器的先前内容的输入视频信号中的任何抖动的速率生成。 存储器循环地从写入地址循环地提供顺序读取地址偏移+ E,fra 1/2 + EE扫描线,其以等于生成写入地址的速率的几个扫描线上的平均值的稳定速率生成。 这提供了时基误差校正。 当检测到辍学时,禁止覆盖已经存储在单行存储器中的视频信号样本。 这种类型的覆盖保护在检测到辍学期间实现视频信号的自动替换。 调整用于丢失补偿的延迟视频的色度信号分量的相位,但是,如果需要,则相应于替换信号中所需的相位。
    • 5. 发明授权
    • Apparatus for performing various on-screen display functions and methods for each function
    • 用于执行各种屏幕显示功能的装置和用于每个功能的方法
    • US06198468B1
    • 2001-03-06
    • US08969101
    • 1997-11-13
    • Sung-il Cho
    • Sung-il Cho
    • G06F104
    • H04N5/44504H04N9/64H04N21/431Y10S248/917
    • An apparatus having various on-screen display (OSD) functions and methods for each function are provided. The apparatus includes an on-screen display device for receiving serial data having a RAM write address, a ROM address, and the on-screen display functions. The apparatus synthesizes a character signal corresponding to serial data with a background color signal or an external composite video signal in response to an internal or external composite synchronous signal and provides the result to a monitor. The apparatus also includes a synchronous signal generating device for generating internal horizontal and vertical synchronous signals upon receiving a main clock signal, synthesizing means for synthesizing an internal equalization pulse with the internal horizontal and vertical synchronous signals, and means for determining the internal composite synchronous signal or the external composite synchronous signal extracted from the composite video signal. A control device is also part of the OSD apparatus. The control device outputs user serial data to the on-screen display device, generates the main clock signal from a system clock, and controls the on-screen display device and the synchronous signal generating device.
    • 提供具有各种屏幕显示(OSD)功能和各种功能的方法的设备。 该装置包括用于接收具有RAM写地址,ROM地址和屏幕显示功能的串行数据的屏幕显示装置。 该装置响应于内部或外部复合同步信号,合成具有背景颜色信号或外部复合视频信号的与串行数据对应的字符信号,并将结果提供给监视器。 该装置还包括同步信号发生装置,用于在接收主时钟信号时产生内部水平和垂直同步信号,合成装置用于将内部均衡脉冲与内部水平和垂直同步信号合成,以及用于确定内部复合同步信号的装置 或从复合视频信号中提取的外部复合同步信号。 控制装置也是OSD装置的一部分。 控制装置将用户串行数据输出到屏幕显示装置,从系统时钟产生主时钟信号,并控制屏幕显示装置和同步信号产生装置。