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    • 10. 发明授权
    • Television signal processing apparatus
    • 电视信号处理装置
    • US5142353A
    • 1992-08-25
    • US685164
    • 1991-04-12
    • Sadashi KageyamaYoshio AbeYoshio YasumotoShuji InoueHideyo Uwabata
    • Sadashi KageyamaYoshio AbeYoshio YasumotoShuji InoueHideyo Uwabata
    • H04N11/24
    • H04N11/008
    • A television signal processor which is compatible with the existing television systems and is capable of producing television signals having a larger aspect ratio than the standard aspect ratio has an arrangement such that, at the transmission side, a main signal and a multiplex signal are produced from an electrical signal obtained by receiving an original image through processes such as time-axis compression, time-axis expansion, and chrominance signal processing, and are subjected to non-time-axis multiplexing. The processor has a further arrangement such that, at the reception side, there are provided a circuit for separating the non-time-axis multiplexed signal, a circuit for separating a luminance signal and a chrominance signal, a circuit for demodulating the chrominance signal, a circuit for effecting time-axis compression, a circuit for time-axis expanding the time-axis multiplexed signal, and a circuit for time-axis compressing the non-time-axis multiplexed signal. A receiver provided with this processor may receive images broadcast under the existing television systems without troubles and also may reproduce TV images with a larger aspect ratio than the conventional 4:3 aspect ratio by the application of synchronous detection, time-axis compression, time-axis expansion, etc.
    • 与现有电视系统兼容并且能够产生具有比标准宽高比更大的纵横比的电视信号的电视信号处理器具有以下结构:在发送侧,主信号和多路信号由 通过诸如时间轴压缩,时间轴扩展和色度信号处理的处理接收原始图像而获得的电信号,并且进行非时间轴多路复用。 该处理器具有另外的结构,即在接收侧设置有用于分离非时间轴多路复用信号的电路,用于分离亮度信号和色度信号的电路,用于解调色度信号的电路, 用于实现时间轴压缩的电路,用于时间轴扩展时间轴多路复用信号的电路,以及用于时间轴压缩非时间轴多路复用信号的电路。 设置有该处理器的接收机可以在现有的电视系统下接收图像而无需麻烦,并且还可以通过应用同步检测,时间轴压缩,时间轴压缩,再现具有比传统的4:3宽高比更大的宽高比的TV图像。 轴扩展等