| 摘要 |
<p>A digital-to-analogue converter for use in a digitally-recorded-signal reproducing apparatus comprises a first constant current source (5, 11, 12; 42, 43, 44), a switch (4; 13, 14; 45, 46, 47) for allowing the constant current of the first constant current source to flow therethrough for a period corresponding to the digital data, a second constant current source (26; 36; 55; 60) generating a current flowing in the direction opposite to that of the current generated by the first constant current source, a switch (27; 37; 56; 61) for allowing the current of the second constant current source to flow therethrough for a predetermined constant period, and an integrator (7,8,9), wherein the sum of the first and second constant currents is integrated by the integrator. The analogue signal outputted by the integrater has a center level in the vicinity of the ground potential level.</p> |
