Video signal processing system
    1.
    发明授权
    Video signal processing system 失效
    视频信号处理系统

    公开(公告)号:US4882615A

    公开(公告)日:1989-11-21

    申请号:US252024

    申请日:1988-09-28

    IPC分类号: H04N9/78

    CPC分类号: H04N9/78

    摘要: The video processing apparatus according to this invention is constructed to receive a composite television signal having frequency-multiplexed luminance and chrominance signals. The composite color television signal is divided into a plurality of picture element signals by sampling it, and the luminance and chrominance signals frequency-multiplexed in each of the plurality of picture element signals are separated. An arbitrary one of the plurality of picture element signals is extracted as a remark picture element. A plurality of picture element signals whose chrominance signal frequency multiplexed therein is of the same phase as that of the chrominance signal frequency multiplexed in said remark picture element signal is extracted as first reference picture element signals. A plurality of picture element signals whose chrominance signal frequency multiplexed therein is in opposite phase to that of the chrominance signal multiplexed in the remark picture element signal is extracted as second reference picture element signals. Plural kinds of computed picture element signals are formed by using the remark element signals and a part of the plurality of second picture element signals. A plurality of correlation state signals are formed by computing the remark picture element signal, a part of the plurality of first reference picture element signals and part of the plurality of second reference picture element signals. A part of the plurality of computed picture element signals is selected on the basis of the plurality of correlation state signals.

    摘要翻译: 根据本发明的视频处理装置被构造成接收具有频率复用的亮度和色度信号的复合电视信号。 复合彩色电视信号通过对复合彩色电视信号进行采样而被分成多个像素信号,并且分离多个像素信号中的每一个中的频率复用的亮度和色度信号。 提取多个像素信号中的任意一个作为备注图像元素。 作为第一参考图像元素信号,提取其色度信号频率多路复用的多个像素信号与在所述注释像素信号中复用的色度信号频率相同的相位。 作为第二基准像素信号,提取其色频信号频率多路复用的多个像素信号与在备注像素信号中多路复用的色度信号的相位相反。 通过使用备注元素信号和多个第二图像元素信号的一部分来形成多种计算的像素信号。 通过计算注释像素信号,多个第一参考像素信号的一部分和多个第二参考像素信号的一部分来形成多个相关状态信号。 基于多个相关状态信号来选择多个计算出的像素信号的一部分。

    Video signal processing system with selective signal extraction and delay
    2.
    发明授权
    Video signal processing system with selective signal extraction and delay 失效
    具有选择性信号提取和延迟的视频信号处理系统

    公开(公告)号:US5155583A

    公开(公告)日:1992-10-13

    申请号:US668748

    申请日:1991-03-13

    IPC分类号: H04N9/78

    CPC分类号: H04N9/78

    摘要: 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.

    摘要翻译: 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。

    Image information signal transmitting system
    3.
    发明授权
    Image information signal transmitting system 失效
    图像信息传输系统

    公开(公告)号:US5023716A

    公开(公告)日:1991-06-11

    申请号:US608634

    申请日:1990-10-31

    IPC分类号: H04N7/12 H04N7/26 H04N7/46

    CPC分类号: H04N7/125 H04N19/59 H04N19/98

    摘要: An image information signal transmitting system of this invention is a system which divides an image information signal for one picture constituted by a set of picture element data into blocks each constituted by a predetermined quantity of picture element data, transmits the picture element data on each of the blocks on the basis of a mode selected from among a plurality of transmission modes each of which allows a different quantity of picture element data to be transmitted and a mode information signal indicative of the transmission mode of each of the blocks, and restores the picture element data on each of the blocks to the original image information signal. The system is arranged to store the transmitted picture element data, read out the stored picture element data at a data readout rate of one kind which is selected from among a plurality of different data readout rates and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal, and implement a data restoring processing on the picture element data thus read on the basis of a data restoring processing of one kind which is selected from among a plurality of different data restoring processings and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal. With this arrangement, it is possible to realize reductions in the size, weight and cost of the apparatus without deteriorating an image information signal to be transmitted.

    摘要翻译: 本发明的图像信息信号发送系统是将由一组图像元素数据构成的一幅图像的图像信息信号分割为由预定量的图像元素数据构成的块的系统, 基于从多个传输模式中选择的模式,每个传输模式允许发送不同数量的图像元素数据,以及表示每个块的传输模式的模式信息信号,并恢复图像 每个块上的元素数据到原始图像信息信号。 该系统设置为存储所发送的图像元素数据,以从多个不同数据读出速率中选择的一种数据读出速率读出存储的图像元素数据,并且其对应于由 发送模式信息信号,并且基于从多个不同的数据恢复处理中选择并且对应于传输的种类的一种的数据恢复处理,对这样读取的图像元素数据执行数据恢复处理 模式由发送模式信息信号指示。 利用这种布置,可以实现装置的尺寸,重量和成本的降低,而不会使要发送的图像信息信号恶化。

    Image information signal transmitting system
    5.
    发明授权
    Image information signal transmitting system 失效
    图像信息传输系统

    公开(公告)号:US4916537A

    公开(公告)日:1990-04-10

    申请号:US329006

    申请日:1989-03-27

    CPC分类号: H04N7/125 H04N7/0152

    摘要: An image information signal transmitting system according to the present invention is structured in such a manner that an image information signal composed of a plurality of picture element data corresponding to one picture is stored in units of blocks each of which is composed of a predetermined number of picture element data, the image information signal composed of a plurality of picture element data corresponding to one picture is divided into the blocks, and picture element data is extracted from the thus-divided blocks by a number smaller than the number of picture element data forming the block, and the extracted picture element is stored in units of corresponding blocks. Furthermore, the image information signal composed of a plurality of picture element data corresponding to one picture is divided into the blocks, and a transmission mode for the picture element data forming each of the blocks is determined among a plurality of transmission modes having different numbers of picture element data transmitted, a reading address which corresponds to a block determined to be transmitted in a transmission mode having the greatest number of picture element data transmitted, discrimination data for discriminating an address corresponding to an end portion in each horizontal line direction of a picture from other reading addresses is generated, and stored picture element data is read out so that image information signals can be stably transmitted without any deterioration in the image quality.

    摘要翻译: 根据本发明的图像信息信号发送系统被构造成使得由与一个图像相对应的多个图像元素数据组成的图像信息信号以块为单位存储,每个块由预定数量的 图像元素数据,将由与一个图像相对应的多个图像元素数据组成的图像信息信号分割成块,并且从这样分割的块中提取小于图像元素数据形成数量的数量的图像元素数据 块和提取的图像元素以对应的块为单位存储。 此外,将由与一个图像相对应的多个图像元素数据构成的图像信息信号分割成块,并且在具有不同数量的多个图像数据的多个传输模式中确定形成每个块的图像元素数据的传输模式 发送的图像元素数据,对应于被确定为以发送的图像元素数量最多的传输模式发送的块的读取地址,用于识别与图像的每个水平线方向上的端部相对应的地址的鉴别数据 从其他读取地址生成,并且读出存储的图像元素数据,从而可以稳定地发送图像信息信号,而不会降低图像质量。

    Image encoding apparatus
    10.
    发明授权
    Image encoding apparatus 失效
    图像编码装置

    公开(公告)号:US5818970A

    公开(公告)日:1998-10-06

    申请号:US872988

    申请日:1992-04-24

    摘要: An image encoding apparatus of this invention extracts a character/line image from a multi-value image, and substitutes image information corresponding to the extracted character/line image with substitution data based on the image information. Thereafter, the apparatus encodes the image information corresponding to the character/line image, and the remaining image information by different methods, thereby performing efficient image encoding while preserving quality of a character/line image in a multi-value image.

    摘要翻译: 本发明的图像编码装置从多值图像中提取字符/行图像,并且基于图像信息将替换数据替换为与提取的字符/行图像对应的图像信息。 此后,该装置通过不同的方法对与字符/行图像相对应的图像信息和剩余图像信息进行编码,从而在保持多值图像中的字符/线图像的质量的同时执行有效的图像编码。