JPS5478066A - Ad converter - Google Patents
Ad converterInfo
- Publication number
- JPS5478066A JPS5478066A JP14499377A JP14499377A JPS5478066A JP S5478066 A JPS5478066 A JP S5478066A JP 14499377 A JP14499377 A JP 14499377A JP 14499377 A JP14499377 A JP 14499377A JP S5478066 A JPS5478066 A JP S5478066A
- Authority
- JP
- Japan
- Prior art keywords
- resistances
- converter
- transistor
- reference voltage
- counter
- 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
Abstract
PURPOSE: To enhance an effective resolution for video signals and make operation high-speed with making a circuit scale small, by constituting an AC converter by plural reference voltage generation means, a comparator, an AD converter by plural reference voltage generation means, a comparator, an encoder, a counter and a shift means.
CONSTITUTION: An AD converter is constituted by counter CNT, comparators C1 to C7, logical gates G1 to G4, transistors Q1 and Q2, resistances R1 to T3 and R1 to R3 and R0 to r7, variable resistances VR1 and VR2, etc. In this constitution, vertical synchronizing signals SV are counted in frequency division every input by counter CNT, and counter output FC which is inverted in odd fields and even fields is obtained. Next, output FC is given to the base of transistor Q1 through resistance R1; and when output FC is "1", Q1 is turned on. Meanwhile, since transistor Q2, resistances R2 and R3, and variable resistance VR2 constitute a constant current circuit, the constant current flows from the collector of transistor Q2. As a result, the reference voltage can be taken out from resistances r2 to R7 in seven steps E1 to E7.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14499377A JPS5478066A (en) | 1977-12-05 | 1977-12-05 | Ad converter |
FR7828647A FR2405603A1 (en) | 1977-10-07 | 1978-10-06 | IMAGE PRESENTATION DEVICE |
GB7839652A GB2006569A (en) | 1977-10-07 | 1978-10-06 | A flat panel image display system |
DE19782843706 DE2843706A1 (en) | 1977-10-07 | 1978-10-06 | IMAGE PLAYBACK SYSTEM |
NL7810125A NL7810125A (en) | 1977-10-07 | 1978-10-06 | IMAGE DISPLAY SYSTEM. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14499377A JPS5478066A (en) | 1977-12-05 | 1977-12-05 | Ad converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5478066A true JPS5478066A (en) | 1979-06-21 |
Family
ID=15374971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14499377A Pending JPS5478066A (en) | 1977-10-07 | 1977-12-05 | Ad converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5478066A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054527A (en) * | 1983-09-05 | 1985-03-29 | Omron Tateisi Electronics Co | A/d converting device |
JPS60169228A (en) * | 1984-02-13 | 1985-09-02 | Victor Co Of Japan Ltd | Ad conversion circuit |
JPS61293023A (en) * | 1985-06-20 | 1986-12-23 | Nec Corp | Digital to analog converter |
JPS6439830A (en) * | 1987-08-05 | 1989-02-10 | Toshiba Corp | A/d converter |
JPH03101387A (en) * | 1990-09-07 | 1991-04-26 | Casio Comput Co Ltd | A/d converter for video signal |
WO2003065589A1 (en) * | 2002-01-28 | 2003-08-07 | Neuro Solution Corp. | Analog-digital conversion apparatus |
JP4648996B2 (en) * | 2000-10-11 | 2011-03-09 | ローム株式会社 | Analog-to-digital converter |
KR20170113010A (en) | 2016-03-29 | 2017-10-12 | 세키스이가세이힝코교가부시키가이샤 | Polymer particles, and production method and use thereof |
-
1977
- 1977-12-05 JP JP14499377A patent/JPS5478066A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054527A (en) * | 1983-09-05 | 1985-03-29 | Omron Tateisi Electronics Co | A/d converting device |
JPS60169228A (en) * | 1984-02-13 | 1985-09-02 | Victor Co Of Japan Ltd | Ad conversion circuit |
JPH0211182B2 (en) * | 1984-02-13 | 1990-03-13 | Victor Company Of Japan | |
JPS61293023A (en) * | 1985-06-20 | 1986-12-23 | Nec Corp | Digital to analog converter |
JPH0455005B2 (en) * | 1985-06-20 | 1992-09-02 | Nippon Electric Co | |
JPS6439830A (en) * | 1987-08-05 | 1989-02-10 | Toshiba Corp | A/d converter |
JPH03101387A (en) * | 1990-09-07 | 1991-04-26 | Casio Comput Co Ltd | A/d converter for video signal |
JP4648996B2 (en) * | 2000-10-11 | 2011-03-09 | ローム株式会社 | Analog-to-digital converter |
WO2003065589A1 (en) * | 2002-01-28 | 2003-08-07 | Neuro Solution Corp. | Analog-digital conversion apparatus |
KR20170113010A (en) | 2016-03-29 | 2017-10-12 | 세키스이가세이힝코교가부시키가이샤 | Polymer particles, and production method and use thereof |
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