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    Multiplexed digital to ac analog converter
    1.
    发明授权
    Multiplexed digital to ac analog converter 失效
    多路复用数字到交流模拟转换器

    公开(公告)号：US3588880A

    公开(公告)日：1971-06-28

    申请号：US3588880D

    申请日：1968-10-24

    申请人： SINGER GENERAL PRECISION

    发明人： GROSS ROBERT D ,  MASEL MARVIN ,  SCHOLL PETER K

    IPC分类号： H03M1/00 ,  H03K13/04

    CPC分类号： H03M1/662 ,  H03M1/665

    摘要： A MULTIPLEXING DIGITAL TO ANALOG CONVERTER COMPRISING: INPUT GATE MEANS TO RECEIVE MORE THAN ONE DIGITAL SIGNAL, AN OUTPUT SECTION COUPLED TO THE INPUT GATE MEANS, A REFERENCE SIGNAL SOURCE COUPLED TO THE INPUT GATE MEANS, A REFERENCE EACH DIGITAL SIGNAL TO AC FORM AND CONNECTIONS TO FEED SAID CONVERTED SIGNAL TO THE OUTPUT SECTION, SAMPLING MEANS TO RAPIDLY SAMPLE THE CHANGING VALUES IN SAID OUTPUT SECTION FOR STORAGE, CAPACITOR STORAGE MEANS COUPLED TO THE OUTPUT SECTION FOR STORING SAID VALUES THEREON, AND, OUTPUT FILTER AND AMPLIFIER MEANS FED BY SAID CAPACITOR STORAGE MEANS TO PROVIDE SMOOTHLY CHANGING AC OUTPUTS CORRESPONDING TO EACH OF SAID DIGITAL SIGNALS.

    Analog-to-digital cyclic forward feed successive approximation conversion equipment
    2.
    发明授权
    Analog-to-digital cyclic forward feed successive approximation conversion equipment 失效
    模拟数字循环前进进给接收式近似转换设备

    公开(公告)号：US3581304A

    公开(公告)日：1971-05-25

    申请号：US3581304D

    申请日：1967-05-16

    申请人： SINGER GENERAL PRECISION

    发明人： PARADISE RONALD Y ,  MASEL MARVIN ,  NAYDAN BOB N ,  BRINKMAN JOHN D

    IPC分类号： H03M1/00 ,  H03K13/14

    CPC分类号： H03M1/00 ,  H03M1/50

    摘要： An analog value to be converted to a digital count is first converted into a coarse digital number by applying the analog signal to a ladder network converter which converts the signal into digital form by successive approximation techniques and transfers this digital number to an output register. The value of the number in the register is also reconverted back to analog form by a summing network and subtracted from the original analog signal. The difference between the original and the reconverted values is then amplified by a proper scale factor and again converted to obtain a second digital number in the same converter. The most significant digits of the second digital number are then compared with the corresponding least significant digits of the first number by logic means and the two numbers are then properly consolidated into one number, in a form suitable for use by external equipment, which represents the input analog value with an accuracy higher than that inherent in the analogto-digital converter being used.