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71 条记录 (耗时 0.014 秒)

    Video display
    1.
    发明授权
    Video display 失效
    视频显示

    公开(公告)号：US4145706A

    公开(公告)日：1979-03-20

    申请号：US826462

    申请日：1977-08-22

    申请人： Heinz Hess ,  Horst Peth

    发明人： Heinz Hess ,  Horst Peth

    IPC分类号： G01R13/22 ,  G01R13/26 ,  G01R17/04 ,  H04N9/62 ,  H04N7/02 ,  H04N7/18

    CPC分类号： G01R13/26 ,  G01R13/22 ,  G01R17/04

    摘要： This invention concerns a circuit arrangement for visually representing a horizontal frequency coupled input signal on the picture screen of a video display device such as a domestic television receiver. This is achieved by comparing the input signal to be represented in visual form with a vertical frequency sawtooth signal, the comparison being effected in such manner that a further signal is produced which identifies the moments when the two compared signals are equal. The further signal is then used directly or indirectly to control the brightness of the picture screen of the video display device. The further signal may be a pulse form signal with the leading flanks of the pulses corresponding to moments when the input signal crosses the sawtooth signal upwardly and the trailing flanks corresponding to the moments when the input signal crosses the sawtooth signal downwardly. The further signal is preferably differentiated prior to application to the display device.

    摘要翻译： 本发明涉及一种用于在诸如家用电视接收机之类的视频显示设备的画面上可视地表示水平频率耦合的输入信号的电路装置。 这是通过将要以视觉形式表示的输入信号与垂直频率锯齿波信号进行比较来实现的，该比较以这样的方式进行，即产生另外的信号，其识别当两个比较信号相等时的力矩。 然后直接或间接地使用另外的信号来控制视频显示设备的画面的亮度。

    Apparatus for producing continuous graphic displays from intermittantly sampled data
    2.
    发明授权
    Apparatus for producing continuous graphic displays from intermittantly sampled data 失效
    用于从间歇采样数据生成连续图形显示的装置

    公开(公告)号：US3968499A

    公开(公告)日：1976-07-06

    申请号：US550984

    申请日：1975-02-19

    申请人： Peter R. Lowe ,  Tommy N. Tyler

    发明人： Peter R. Lowe ,  Tommy N. Tyler

    IPC分类号： G01R13/14 ,  G01D1/12 ,  G01D9/16 ,  G01R13/20 ,  G01R17/04 ,  G01D9/42

    CPC分类号： G01D1/12 ,  G01D9/16 ,  G01R17/04

    摘要： The minimum and maximum values attained by an analog data signal in each of successive sampling periods are determined by alternately operative amplitude detectors which produce and store a corresponding minimum and maximum signal for each of these periods. A generator produces a ramp signal which repeats in each period in synchronism with the sweep of the beam of a fiber optics strip cathode ray tube along the strip thereof. A record sheet is advanced at right angles to this strip. Comparators are operative in each period to compare the stored detector signals of the immediately preceding period with the ramp signal, and to produce an output when the ramp signal exceeds either of the detector signals. An EXCLUSIVE OR gate receives these outputs and unblanks the normally blanked tube beam for a time in each period to produce a line on the sheet extending along the strip between points representing the minimum and maximum signal values for the preceding period. The successive lines of the successive periods combine to form a recorded curve for the data signal.

    摘要翻译： 在每个连续的采样周期中由模拟数据信号获得的最小值和最大值由交替操作的振幅检测器确定，该检测器产生并存储这些周期中的每一个的对应的最小和最大信号。 发生器产生斜坡信号，其在每个周期中与沿着条带的光纤条带阴极射线管的扫描同步地重复。 记录表与该条直角前进。 比较器在每个周期中进行操作，以将紧接在前的周期的存储的检测器信号与斜坡信号进行比较，并且当斜坡信号超过检测器信号中的任一个时产生输出。 独占或门接收这些输出，并且在每个周期内接收通常消隐的管束一段时间，以便在表示前一周期的最小和最大信号值的点之间沿着带延伸的片材上产生一条线。 连续周期的连续行组合形成数据信号的记录曲线。

    Method and apparatus for producing continuous graphic displays from intermittently sampled data
    3.
    发明授权
    Method and apparatus for producing continuous graphic displays from intermittently sampled data 失效
    用于从间接采样数据生成连续图形显示的方法和装置

    公开(公告)号：US3605109A

    公开(公告)日：1971-09-14

    申请号：US3605109D

    申请日：1970-01-08

    申请人： HONEYWELL INC

    发明人： TYLER TOMMY N ,  LOWE PETER R

    IPC分类号： G01R13/14 ,  G01D15/14 ,  G01R17/04 ,  G01D9/32

    CPC分类号： G01D15/14 ,  G01R17/04

    摘要： The values of a plurality of data signals to be plotted against time as curves on a moving photosensitive record sheet are sampled by being simultaneously compared continuously with a single cyclically repeated ramp voltage by a plurality of comparators. Each of the latter produces an output each time that the ramp voltage just exceeds the value of the corresponding signal. The ramp voltage is synchronized with the horizontal sweep for a fiber optics cathode-ray tube, across the optics strip of which the record sheet is advanced at right angles. An EXCLUSIVE OR gate for each signal unblanks the normally blanked beam of the tube for a period in each sweep to mark a line on the sheet. Each period is that in which the ramp voltage lies between the two values of the corresponding signal at which the corresponding comparator output is produced for the present and the immediately previous sweeps. The lines produced for each signal combine to form a recorded curve for that signal. In one form, each gate is controlled by the corresponding comparator output applied both directly and through a device providing a delay of one sweep period. In another form, each gate is controlled by two comparator outputs, one based on the present value of the corresponding signal, and the other based on a stored value of that signal from the previous sweep.