JPS6435493A - Signal processing circuit - Google Patents
Signal processing circuitInfo
- Publication number
- JPS6435493A JPS6435493A JP19078387A JP19078387A JPS6435493A JP S6435493 A JPS6435493 A JP S6435493A JP 19078387 A JP19078387 A JP 19078387A JP 19078387 A JP19078387 A JP 19078387A JP S6435493 A JPS6435493 A JP S6435493A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- generated
- polarity
- flickerless
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE: To provide a driving AC signal for a flickerless satisfactory liquid crystal display device or the like by generating signal potentials having a normal polarity and an inverted polarity by a DA conversion circuit. CONSTITUTION: When digital signals are supplied from input terminals 11 to 1n to inverters 211 to 21n and a switch 5 and switches 221 to 22n are switched to the up/down sides by control signals of an odd/even field from a terminal 9, a suction current which has a maximum/minimum value in the black level and has a minimum/maximum value in the white level is generated by a current source 24. A voltage drop due to this current and a resistor 4 are subtracted from bias voltages V1 and V2 , and results are outputted to an output terminal 8 through a buffer 3. Consequently, a stable signal is obtained because signal potentials having a normal polarity and an inverted polarity are generated by the DA conversion circuit, and a flickerless satisfactory signal is generated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19078387A JPS6435493A (en) | 1987-07-30 | 1987-07-30 | Signal processing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19078387A JPS6435493A (en) | 1987-07-30 | 1987-07-30 | Signal processing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6435493A true JPS6435493A (en) | 1989-02-06 |
Family
ID=16263662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19078387A Pending JPS6435493A (en) | 1987-07-30 | 1987-07-30 | Signal processing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6435493A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0566740A (en) * | 1991-09-04 | 1993-03-19 | Sharp Corp | Signal output circuit |
WO1997049080A1 (en) * | 1996-06-20 | 1997-12-24 | Seiko Epson Corporation | Image display apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61103199A (en) * | 1984-10-26 | 1986-05-21 | 旭硝子株式会社 | Image display unit |
-
1987
- 1987-07-30 JP JP19078387A patent/JPS6435493A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61103199A (en) * | 1984-10-26 | 1986-05-21 | 旭硝子株式会社 | Image display unit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0566740A (en) * | 1991-09-04 | 1993-03-19 | Sharp Corp | Signal output circuit |
WO1997049080A1 (en) * | 1996-06-20 | 1997-12-24 | Seiko Epson Corporation | Image display apparatus |
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