JPS644347A - Modulator - Google Patents
ModulatorInfo
- Publication number
- JPS644347A JPS644347A JP62160761A JP16076187A JPS644347A JP S644347 A JPS644347 A JP S644347A JP 62160761 A JP62160761 A JP 62160761A JP 16076187 A JP16076187 A JP 16076187A JP S644347 A JPS644347 A JP S644347A
- Authority
- JP
- Japan
- Prior art keywords
- added
- light modulator
- image signal
- circuit
- output
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
Landscapes
- Fax Reproducing Arrangements (AREA)
- Filters And Equalizers (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
Abstract
PURPOSE:To eliminate the influence of a high-frequency noise content without using a high-cost multiplying circuit, by constituting a feed forward system with use of a D/A converter which converts a digital image signal to an analog image signal and adds it to a light modulator. CONSTITUTION:One output beam from a beam splitter 3 dividing an output beam of a first light modulator 2 is added to a second light modulator 4; the other output beam is added to a light detector 5. An output signal from the light detector 5 is added to a signal separation circuit 6 to be separated into a low-frequency content and a high-frequency content. The low-frequency content is added to a first drive circuit 8 driving the light modulator 2 via a reversing circuit 7, simultaneously being added to one input terminal of an adder 9 without being reversed. The high-frequency content is added to the other input terminal of the added 9 via a reversing circuit 10. And output signal of the added 9 is added to a D/A converter 12 converting a digital image signal to an analog image signal as a reference voltage via a potential divider 11. A conversion output from the converter 12 is added to a drive circuit 13 driving the light modulator 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160761A JPS644347A (en) | 1987-06-26 | 1987-06-26 | Modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62160761A JPS644347A (en) | 1987-06-26 | 1987-06-26 | Modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS644347A true JPS644347A (en) | 1989-01-09 |
Family
ID=15721893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62160761A Pending JPS644347A (en) | 1987-06-26 | 1987-06-26 | Modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS644347A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010201108A (en) * | 2009-03-06 | 2010-09-16 | Taisho Denki Hanbai Kk | Household food agitator |
-
1987
- 1987-06-26 JP JP62160761A patent/JPS644347A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010201108A (en) * | 2009-03-06 | 2010-09-16 | Taisho Denki Hanbai Kk | Household food agitator |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0887937A3 (en) | Analogue and digital convertors | |
JPS5757025A (en) | Waveform converting circuit | |
ATE175062T1 (en) | AD CONVERTER WITH MODULATED JAMMER SIGNAL | |
MY103933A (en) | Ghost canceling filter circuit | |
SE8306362D0 (en) | RECEIVING VIEW RECEIVERS WITH A DIGITAL TREATMENT SYSTEM THAT MAKES DIGITAL DRIVE SIGNALS FOR A CAR | |
JPS644347A (en) | Modulator | |
FR2435163A1 (en) | ANALOG-TO-DIGITAL CONVERTER | |
EP0399120A3 (en) | D/a conversion circuit | |
WO1987006080A3 (en) | Analog/digital converter apparatus for quantizing transmittance voltage signals | |
ES8700822A1 (en) | Kinescope driver in a digital video signal processing system | |
AU6632881A (en) | Determination of median frequency of 3 sequences | |
JPS54117612A (en) | Mike remote control-system transceiver | |
JPS6427397A (en) | Microphone equipment | |
DE3786420D1 (en) | CIRCUIT ARRANGEMENT FOR AN IMAGE DISPLAY DEVICE. | |
JPS6458125A (en) | Digital analog converter | |
JPS5767391A (en) | Solid image pickup device | |
EP0180461A3 (en) | Improvements in or relating to digital to analogue converters | |
JPS57155789A (en) | Semiconductor laser modulator | |
SU647885A1 (en) | Video- signal mixing apparatus | |
JPS6412732A (en) | Carrier signal sending system | |
JPS5552654A (en) | Signal transmission system | |
JPS56165123A (en) | Analog to digital converter | |
JPS6472620A (en) | Pulse width modulation type d/a converter | |
SU1647848A1 (en) | High-voltage amplifier | |
JPS5669924A (en) | Digital processing system |