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    • 6. 发明授权
    • Video signal processing device
    • 视频信号处理装置
    • US5043815A
    • 1991-08-27
    • US300818
    • 1989-01-23
    • Katsuji YoshimuraTadayoshi NakayamaChikara Sato
    • Katsuji YoshimuraTadayoshi NakayamaChikara Sato
    • H04N5/21H04N5/262
    • H04N5/2625H04N5/21H04N5/262
    • A video signal processing device comprising a subtractor for computing a difference signal between an input video signal and a video signal input a predetermined period before relative to the input video signal, a computer for applying a predetermined computation to the difference signal, an adder for adding that computation result to the input video signal or the video signal input the predetermined period before and outputting the result, a delay circuit for delaying the output of the adder by the predetermined period, and a dither generator for generating a dither pattern, being characterized in that the dither pattern generated by the dither generator is added to the signal output from the computer or the adder.
    • 一种视频信号处理装置,包括:减法器,用于计算在输入视频信号和输入视频信号之前预定时段输入的视频信号之间的差分信号;计算机,用于对差分信号应用预定的计算;加法器, 该输出视频信号或输入视频信号的输出结果输出到输出结果之前的预定周期,延迟电路用于将加法器的输出延迟预定周期,以及用于产生抖动图案的抖动发生器,其特征在于 由抖动发生器产生的抖动模式被加到从计算机或加法器输出的信号中。
    • 7. 发明授权
    • Image signal recording apparatus
    • 图像信号记录装置
    • US4849833A
    • 1989-07-18
    • US78217
    • 1987-07-27
    • Katsuji YoshimuraToshiyuki MasuiChikara SatoTadayoshi Nakayama
    • Katsuji YoshimuraToshiyuki MasuiChikara SatoTadayoshi Nakayama
    • G11B20/12H04N5/926H04N9/797
    • H04N5/9268H04N9/7973
    • An image signal recording apparatus of the kind handling and recording on a recording medium an image signal which corresponds to a still image consisting of a plurality of horizontal scanning lines and which consists of a plurality of horizontal scanning line information signals corresponding to the horizontal scanning lines is arranged to receive the image signal by the unit of the horizontal scanning line information signal; to obtain horizontal scanning line information data by digitizing the horizontal scanning line information signals; and to form an n number (n: an integer which is at least one) of recording tracks on the recording medium by recording on the medium the horizontal scanning line information data which corresponds to an m number (m: an integer which can be expressed as 1.ltoreq.m.ltoreq.10) of horizontal scanning lines.
    • 一种在记录介质上进行处理和记录的图像信号记录装置,对与由多条水平扫描线组成的静止图像对应的图像信号进行处理并记录,该图像信号由与水平扫描线对应的多条水平扫描线信息信号组成 被布置成以水平扫描线信息信号为单位接收图像信号; 通过数字化水平扫描线信息信号来获得水平扫描线信息数据; 并且通过在介质上记录与m个数相对应的水平扫描线信息数据(m:可表达的整数),在记录介质上形成记录轨迹的n个数(n:至少为一个整数) 作为1
    • 8. 发明授权
    • Video signal processing system with selective signal extraction and delay
    • 具有选择性信号提取和延迟的视频信号处理系统
    • US5155583A
    • 1992-10-13
    • US668748
    • 1991-03-13
    • Katsuji YoshimuraTadayoshi NakayamaHisashi IshikawaChikara Sato
    • Katsuji YoshimuraTadayoshi NakayamaHisashi IshikawaChikara Sato
    • H04N9/78
    • H04N9/78
    • A video signal processing system for use in an apparatus that handles a composite color television signal having therein frequency-multiplexed luminance and chrominance signals frequency-multiplexed in the composite color television signal are separated, comprises: remark picture element signal extracting circuitry for taking part of the composite color television signal as a remark picture element signal and extracting the remark picture element signal from the composite color television signal; reference picture element signal extracting circuitry for taking the composite color television signal whose chrominance signal frequency-mutliplexed therein is of the reverse phase to the chrominance signal frequency-multiplexed in the remark picture element signal as a reference picture element signal and extracting a plurality of the reference picture signals from the composite color television signal; selecting circuitry for selecting out of the plurality of reference picture element signals extracted by the reference picture element signal extracting circuitry the one which takes a median value and producing it; and separating circuitry for separating the luminance signal and chrominance signal frequency-multiplexed in the selected reference picture element signal by using the remark picture element signal extracted by the remark picture element signal extracting circuitry.
    • 用于处理复合彩色电视信号的装置中的视频信号处理系统,其中复合彩色电视信号中具有频率复用的色度信号和复合彩色电视信号中频率多路复用的色度信号,包括:备注图像元素信号提取电路, 复合彩色电视信号作为备注像素信号,并从复合彩色电视信号中提取备注像素信号; 参考图像元素信号提取电路,用于将其色频信号频率复合的复合彩色电视信号与备注像素信号中多路复用的色度信号相反,作为参考像素信号,并提取多个 来自复合彩色电视信号的参考图像信号; 选择电路,用于从所述参考图像元素信号提取电路提取的所述多个参考图像元素中选择所述参考图像元素信号,所述参考图像元素获取中值并产生该参考图像元素信号; 以及分离电路,用于通过使用由备注像素信号提取电路提取的备注像素信号来分离所选择的参考像素信号中频率多路复用的亮度信号和色度信号。
    • 10. 发明授权
    • High efficient image signal recording system
    • 高效图像信号记录系统
    • US5734785A
    • 1998-03-31
    • US296615
    • 1994-08-25
    • Kenichi NagasawaTadayoshi NakayamaChikara SatoKoji Takahashi
    • Kenichi NagasawaTadayoshi NakayamaChikara SatoKoji Takahashi
    • H04N9/79H04N9/82H04N5/91
    • H04N9/8205H04N9/7904
    • In an image signal recording system for recording on a recording medium an original image signal corresponding to an original picture which is comprised of a plurality of pixels, the original picture is divided into a plurality of pixel blocks each consisting of a predetermined number of pixels, and image signals each corresponding to the associated pixel block divided are recorded on the recording medium in accordance with a first recording mode and a second recording mode which are mutually different in a recording format. Either of the first and second recording modes is selected on each of the plurality of pixel blocks and a recording mode information signal corresponding to the selected recording mode is generated. There are recorded on the recording medium, the first image information signal or the second image information signal formed and the recording mode information signal generated, on a multiple basis. Thus, it is possible to provide the image signal recording system capable of efficiently recording image signals while suppressing a deterioration of the image quality.
    • 在用于在记录介质上记录与由多个像素组成的原始图像相对应的原始图像信号的图像信号记录系统中,原始图像被分成多个像素块,每个像素块由预定数量的像素组成, 并且分别对应于相关联的像素块的图像信号根据记录格式相互不同的第一记录模式和第二记录模式被记录在记录介质上。 在多个像素块中的每一个上选择第一和第二记录模式之一,并且生成与所选记录模式对应的记录模式信息信号。 在多个基础上记录在记录介质上,形成的第一图像信息信号或第二图像信息信号和所生成的记录模式信息信号。 因此,可以提供能够有效地记录图像信号同时抑制图像质量劣化的图像信号记录系统。