发明名称 |
Digital-to-analog converting apparatus equipped with calibrating function |
摘要 |
In a D/A converting apparatus which provides a converted analog signal at its output terminal by selectively yielding one or more currents from one or more current sources in accordance with an input digital signal, the current sources are selectively actuated to output the currents and an error in the current of each selected current source is obtained from the output derived at the output terminal in response to the outputting of the current. From the current error of each current source is computed a final error corresponding to each input digital signal and corrected data corresponding to the final error is stored in a corrected data memory, which is read out by the input digital signal. The output thus read out is converted into an analog signal, whereby a correct converted output is obtained.
|
申请公布号 |
US4835535(A) |
申请公布日期 |
1989.05.30 |
申请号 |
US19870022483 |
申请日期 |
1987.03.06 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION;TAKEDA RIKEN KOGYO KABUSHIKIKAISHA |
发明人 |
SHIBAYAMA, AKINORI;NIIJIMA, HIRONOBU |
分类号 |
H03M1/10;G05B19/23;H03M1/00;H03M1/74 |
主分类号 |
H03M1/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|