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    • 11. 发明授权
    • Video image storage device
    • 视频图像存储设备
    • US4843471A
    • 1989-06-27
    • US131682
    • 1987-12-11
    • Yoshiyuki YazawaHirofumi OhnishiTaizo AkimotoSusumu WashizuTsuyoshi Shoji
    • Yoshiyuki YazawaHirofumi OhnishiTaizo AkimotoSusumu WashizuTsuyoshi Shoji
    • H04N5/76G09G5/391H04N1/40H04N5/907H04N5/937
    • H04N1/40068G09G5/391H04N5/907H04N5/937
    • A video image storage device comprises a signal input means capable of analog-to-digital conversion of input video signals including various types of scanning lines such as different numbers of scanning lines, a frame memory means capable of memorizing image signals and signal output means. The video image storage device further comprises an input signal generating means, an output signal generating means and a frame memory control means. The input signal generating means comprises a N multiplying circuit capable of N multiplying horizontal synchronizing pulses. The number of N in a dividing circuit can be arbitarily determined by the relation between effective image period and blanking period, and thus the video image storage device can store input video signals having different scanning line numbers which depend upon the types of diagnostic modalities.
    • 视频图像存储装置包括:信号输入装置,其能够对包括各种类型的扫描线(诸如不同数量的扫描线)的输入视频信号进行模数转换,能够存储图像信号的帧存储装置和信号输出装置。 视频图像存储装置还包括输入信号产生装置,输出信号产生装置和帧存储器控制装置。 输入信号产生装置包括一个能够N个水平同步脉冲相乘的N倍增电路。 划分电路中的N数可以通过有效图像周期和消隐周期之间的关系任意确定,因此视频图像存储装置可以存储取决于诊断模式的类型的具有不同扫描行号的输入视频信号。
    • 12. 发明授权
    • Synchronizing signal generating circuit
    • 同步信号发生电路
    • US4827341A
    • 1989-05-02
    • US133971
    • 1987-12-16
    • Taizo AkimotoMikio NishiyamaYoshiyuki YazawaHirohumi Ohnishi
    • Taizo AkimotoMikio NishiyamaYoshiyuki YazawaHirohumi Ohnishi
    • H04N5/10H04N5/04H04N5/08
    • H04N5/10
    • A synchronizing signal generating circuit is incorporated in a digital image storing device. When a plurality of video signals composed of different numbers of scanning lines and issued from television cameras of different types of various diagnostic apparatus are converted from analog to digital signals and stored per frame in an image memory in the digital image storing apparatus, sampling pulses for an A/D converter which are synchronous with the horizontal synchronizing signals of the video signals and field discriminating signals relative to odd-numbered fields and even-numbered fields, among composite synchronizing signals, are generated by using an N-multiplier including an equalizing pulse remover controlled by an F/V converter and a field discriminating circuit with a field discriminating time constant being automatically controlled by the F/V converter. The video signals are stored per frame in the image memory on a real-time basis by utilizing the sampling pulses and the field discriminating signal.
    • 同步信号发生电路被并入数字图像存储装置中。 当将由不同类型的各种诊断装置的不同数目的扫描线组成的多个视频信号从模拟信号转换为数字信号并且每帧存储在数字图像存储装置中的图像存储器中时,采样脉冲用于 通过使用包括均衡脉冲的N倍乘器来生成与复合同步信号中的奇数场和偶数场的视频信号和场识别信号的水平同步信号同步的A / D转换器 由F / V转换器控制的去除器和具有由F / V转换器自动控制的场鉴别时间常数的场识别电路。 视频信号通过利用采样脉冲和场鉴别信号实时地按帧存储在图像存储器中。