Charge-transfer coded-voltage generator for use in analog-digital coders
and decoders
    1.
    发明授权
    Charge-transfer coded-voltage generator for use in analog-digital coders and decoders 失效
    电荷传输编码电压发生器,用于模拟数字编码器和解码器

    公开(公告)号:US4350976A

    公开(公告)日:1982-09-21

    申请号:US215134

    申请日:1980-12-10

    IPC分类号: H03M1/66 H03M1/00 H03K13/02

    摘要: Successive two-trip traversals of charges between gates G.sub.0 and G.sub.2 make it possible to obtain beneath gates G.sub.1 and G.sub.2 quantities of charges equal to Q.sub.R, Q.sub.R /2, Q.sub.R /2.sup.2 . . . Q.sub.R /2.sup.i. A readout device for reading charges and connected to gates G.sub.2 and G.sub.4 generates voltages V.sub.R and V.sub.Ri =a.sub.0 .multidot.V.sub.R +a.sub.1 .multidot.V.sub.R /2+ . . . +a.sub.i-1 .multidot.V.sub.R /2.sup.i-1 +V.sub.R /2.sup.i which are compared with a voltage sample V.sub.x to be coded in order to determine by successive approximations the coefficients a.sub.0 . . . a.sub.n which are equal to 0 or to 1 such that V.sub.x =a.sub.0 .multidot.V.sub.R +a.sub.1 .multidot.V.sub.R /2+ . . . +a.sub.n .multidot.V.sub.R /2.sup.n. Depending on the value of a.sub.i, each quantity of charges Q.sub.R /2.sup.i stored beneath gate G.sub.1 is removed beneath diode D.sub.e or stored beneath gate G.sub.3 and then transferred beneath gate G.sub.4.

    摘要翻译: 栅极G0和G2之间的电荷的连续两次跳变使得可以获得栅极G1和G2之下的等于QR,QR / 2,QR / 22的电荷量。 。 。 QR / 2i 用于读取电荷并连接到门G2和G4的读出装置产生电压VR和VRi = a0xVR + a1xVR / 2 +。 。 。 + ai-1xVR / 2i-1 + VR / 2i,其与要编码的电压采样Vx进行比较,以便通过逐次逼近来确定系数a0。 。 。 a等于0或1,使得Vx = a0xVR + a1xVR / 2 +。 。 。 + anxVR / 2n。 根据ai的值,存储在栅极G1下方的每个电荷量QR / 2i在二极管De下方被去除或存储在栅极G3下方,然后在栅极G4下方传送。