Title:
DIGITAL-TO-ANALOG CONVERTER
Document Type and Number:
WIPO Patent Application WO/1999/066642
Kind Code:
A1
Abstract:
A D/A converter for generating output waveforms with little distortion without the need for high-speed components. The D/A converter comprises a D/A converter (10), four voltage-holding sections (11-1 to 11-4), four step-function generators (12-1 to 12-4), a voltage summing section (14), two integrators (16, 18), and a timing control (20). The voltages corresponding to four sequential digital data inputs are held in the voltage holding sections, respectively, and the step-function generators generate step-function waveforms at the voltage levels corresponding to the held voltages. The voltage summing section (14) combines the step-function waveforms generated in the step-function generators, and two integrators (16, 18) integrate this combined waveform two times, thus producing a continuous analog voltage composed of the input digital data.
Inventors:
KOYANAGI YUKIO (JP)
TORAICHI KAZUO (JP)
TORAICHI KAZUO (JP)
Application Number:
PCT/JP1999/003047
Publication Date:
December 23, 1999
Filing Date:
June 08, 1999
Export Citation:
Assignee:
NIIGATA SEIMITSU CO LTD (JP)
FLUENCY RESEARCH & DEV CO LTD (JP)
KOYANAGI YUKIO (JP)
TORAICHI KAZUO (JP)
FLUENCY RESEARCH & DEV CO LTD (JP)
KOYANAGI YUKIO (JP)
TORAICHI KAZUO (JP)
International Classes:
G06G7/186; H03M1/06; H03M1/08; H03M1/66; H03M1/72; (IPC1-7): H03M1/08
Foreign References:
| JPH01296714A | 1989-11-30 | |||
| JPH03217126A | 1991-09-24 |
Other References:
See also references of EP 1096688A4
Attorney, Agent or Firm:
Amagai, Masahiko (2nd floor 8-15 Kitashinjuku 1-chome, Shinjuku-ku Tokyo, JP)
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