Title:
DA CONVERTER
Document Type and Number:
Japanese Patent JPS6390219
Kind Code:
A
Abstract:
PURPOSE: To reduce the burden of image display software by giving multiplex constitution to a part of a circuit to facilitate switching between a main output and a suboutput.
CONSTITUTION: The analog output of a decoder 6 for main output is increased in accordance with an increase in digital input, and the analog output of a decoder 5 for suboutput is reduced in accordance with an increase in digital input. One of two decoders 5 and 5 is selected by a main/suboutput changeover switch, and the main output is taken out as the analog output if the decoder 6 for main output is selected, and the suboutput is taken out as the analog output if the decoder 5 for suboutput is selected.
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Inventors:
HAYASHI SHINICHI
MAIO KENJI
HOTTA MASAO
NAGATA SHUNJI
SHIMIZU TOSHIHIKO
MAIO KENJI
HOTTA MASAO
NAGATA SHUNJI
SHIMIZU TOSHIHIKO
Application Number:
JP23461086A
Publication Date:
April 21, 1988
Filing Date:
October 03, 1986
Export Citation:
Assignee:
HITACHI LTD
HITACHI VIDEO ENG
HITACHI VIDEO ENG
International Classes:
H03M1/66; (IPC1-7): H03M1/66
Attorney, Agent or Firm:
Katsuo Ogawa