Apparatus for converting data between analog and digital values

Details Apparatus for converting data between analog and digital values Apparatus for converting data between analog and digital values

H - Electricity

03

M

354/97

H03M 1/12 (2006.01) H03M 1/00 (2006.01)

Patent

CA 1243409

APPARATUS FOR CONVERTING BETWEEN ANALOG AND DIGITAL VALUES Abstract of the Disclosure Apparatus for converting between analog and digital values includes means for providing a plurality of signals representing the digital values. Pluralities of control switches are also provided, the number of control switches in each plurality being directly related to the digital signifi- cance of the control switches in such plurality. The control switches may be paired to provide for a conductivity of one switch in each pair. The signals representing individual digi- tal values are introduced to the pluralities of control switches of corresponding digital significance to provide for the conduc- tivity of an individual one of the control switches in each pair in accordance with the digital value represented by the signals introduced to the control switches in such pair. A plurality of output members are also provided. The output members and the pluralities of control switches are connected in a particular matrix relationship to provide paths through the conductive ones of the control switches. Since the output members are conduc- tive, the control switches operate to introduce the current through the output members to one of two output lines. This provides for progressive increases in the number of the output members connected to a particular one of the output lines with progressive increases in the digital value and for a continued connection to the particular output line of output members previously connected to the particular output line with such progressive increases in the digital value. The cumulative current through the particular output line is indicative of the analog value.

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