DIGITAL/ANALOG CONVERSION SYSTEM AND ITS METHOD

    公开(公告)号:JP2002026733A

    公开(公告)日:2002-01-25

    申请号:JP2000172486

    申请日:2000-06-08

    Inventor: TOOSKY ZABIH

    Abstract: PROBLEM TO BE SOLVED: To solve the problems that conventionally a digital/analog conversion system that does not satisfy requirements, such that nonlinear transmission characteristics, is required in some applications even though the transmission characteristics of the digital/analog converter is normally linear; data compression is required, when a signal quantity is large and no data compression is required in other signals in some cases; and an integrated circuit providing a nonlinear transmission characteristics of the digital/analog converter is required. SOLUTION: This invention relates to digital/analog conversion. According to one embodiment of this invention, a logarithmic transform characteristics can be generated, by subtracting a fraction of an output current from a reference current according to a recursive expression.

    6.
    发明专利
    未知

    公开(公告)号:DE60036748T2

    公开(公告)日:2008-07-24

    申请号:DE60036748

    申请日:2000-03-31

    Inventor: TOOSKY ZABIH

    Abstract: The present invention relates to digital to analog conversion. According to an embodiment of the present invention, a logarithmic transfer characteristic (400) may be produced by subtracting a fraction of the output current to a reference current in a recursive equation (504).

    7.
    发明专利
    未知

    公开(公告)号:DE60030105T2

    公开(公告)日:2007-03-01

    申请号:DE60030105

    申请日:2000-04-18

    Abstract: The present invention relates to a conversion circuit that converts a single-ended signal to differential signals. According to an embodiment of the present invention, crosstalk is avoided by insuring that none of the transistors in the conversion circuit are directly connected to ground. By not having a transistor directly connected to ground, ground current is avoided and crosstalk associated with ground current is eliminated.

    10.
    发明专利
    未知

    公开(公告)号:DE60036748D1

    公开(公告)日:2007-11-29

    申请号:DE60036748

    申请日:2000-03-31

    Inventor: TOOSKY ZABIH

    Abstract: The present invention relates to digital to analog conversion. According to an embodiment of the present invention, a logarithmic transfer characteristic (400) may be produced by subtracting a fraction of the output current to a reference current in a recursive equation (504).

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