JPS55156477A - Automatic controlling device for screen display size - Google Patents
Automatic controlling device for screen display sizeInfo
- Publication number
- JPS55156477A JPS55156477A JP6464379A JP6464379A JPS55156477A JP S55156477 A JPS55156477 A JP S55156477A JP 6464379 A JP6464379 A JP 6464379A JP 6464379 A JP6464379 A JP 6464379A JP S55156477 A JPS55156477 A JP S55156477A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- time constant
- saw
- tooth wave
- screen display
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
- H04N3/223—Controlling dimensions
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
PURPOSE:To make screen display of the same size possible even when deflection frequencies are different, by outputting a saw-tooth wave, generated by two time constant circuit, with a discrimination according to the kind of trigger pulses. CONSTITUTION:Vertical deflecting circuit 5 is provided with time constant circuits consisting of variable resistors 53 and 54 differing in time constant and active elements 56 and 57, and a saw-tooth wave of the same amplitude is output to output transistor 51 by charging and discharging capacitor 52. Pulse forming circuit 4 forms and outputs trigger pulses corresponding to the 1st and 2nd synchronizing signals. Then, discriminating circuit 6 outputs it by the trigger signal of circuit 4 and holding circuit 7 holds it. Thus, when the 1st synchronizing signal is input, element 56 is put into operation and element 57 out of operation; when the 2nd synchronizing signal is input, element 56 is OFF and element 57 is ON, thereby outputting the saw-tooth wave, based upon the time constant to terminal 55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6464379A JPS55156477A (en) | 1979-05-25 | 1979-05-25 | Automatic controlling device for screen display size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6464379A JPS55156477A (en) | 1979-05-25 | 1979-05-25 | Automatic controlling device for screen display size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55156477A true JPS55156477A (en) | 1980-12-05 |
Family
ID=13264143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6464379A Pending JPS55156477A (en) | 1979-05-25 | 1979-05-25 | Automatic controlling device for screen display size |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55156477A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178775U (en) * | 1982-05-26 | 1983-11-30 | 日立電子株式会社 | video monitor |
| JPS6317489A (en) * | 1986-07-09 | 1988-01-25 | 三菱電機株式会社 | Vertical synchronization circuit |
-
1979
- 1979-05-25 JP JP6464379A patent/JPS55156477A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178775U (en) * | 1982-05-26 | 1983-11-30 | 日立電子株式会社 | video monitor |
| JPS6317489A (en) * | 1986-07-09 | 1988-01-25 | 三菱電機株式会社 | Vertical synchronization circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS55156477A (en) | Automatic controlling device for screen display size | |
| JPS5450212A (en) | Receiver | |
| JPS5468281A (en) | Waveform display and alarm device | |
| EP0278718A3 (en) | Time variant frequency correction technique | |
| GB1533941A (en) | Echo suppression circuit | |
| JPS54124633A (en) | Display circuit of television receiver | |
| SU644409A3 (en) | Frequency detector of tv colour signals | |
| JPS5410696A (en) | Video quantizing circuit | |
| JPS54149452A (en) | Signal level adjustment unit | |
| JPS554532A (en) | Device for displaying electronic level by liquid crystal | |
| GB663054A (en) | Improvements in delay devices | |
| JPS56162545A (en) | Band display system of electronic tuner | |
| JPS5471932A (en) | Ghost delay time display unit | |
| SU849073A1 (en) | Article quality control device | |
| KR820001027B1 (en) | Remote control system | |
| JPS5696526A (en) | Timing signal generating system | |
| JPS5526789A (en) | Oscillation circuit | |
| JPS5397724A (en) | Television picture receiver possessing waveform display function | |
| JPS5450211A (en) | Receiver | |
| JPS57110966A (en) | Frequency-voltage conversion circuit | |
| JPS5481874A (en) | Electronic watch | |
| JPS56138261A (en) | Detector for ultrasonic moving object | |
| JPS5579526A (en) | Digital type delay circuit | |
| JPS5795774A (en) | Display device for television receiver | |
| JPS5443653A (en) | Automatic delay circuit |