JPS5460825A - Television picture receiver - Google Patents
Television picture receiverInfo
- Publication number
- JPS5460825A JPS5460825A JP12777477A JP12777477A JPS5460825A JP S5460825 A JPS5460825 A JP S5460825A JP 12777477 A JP12777477 A JP 12777477A JP 12777477 A JP12777477 A JP 12777477A JP S5460825 A JPS5460825 A JP S5460825A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- video signal
- definition
- band
- 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.)
- Granted
Links
Landscapes
- Picture Signal Circuits (AREA)
- Details Of Television Scanning (AREA)
Abstract
PURPOSE: To avoid the deterioration of the phase characteristics even with the band variation of the video signal and thus to improve the definition of the TV picture, by varying the band in accordance with the S/N of the video signal in the definition improving circuit.
CONSTITUTION: Band variation circuit 2 is constituted by secondary differentiating circuit 3 to supply the video signal through input terminal 1 and first level varying means 5 comprising the potentiometer which supplies the output of circuit 3 via differential amplifier circuit 4. Furthermore, the following component parts are added to form definition improving circuit 10: compounder 7 which adds the output of circuit 2 and the output of video signal amplifier circuit 6 together; drimary differentiating circuit 11 to supply the output of compounder 7; and second level varying means 12 to supply the output of circuit 11. Then the output of circuit 10 is supplied to electron beam scanning velocity modulation means G4. Thus, the deterioration of the phase characteristics caused by variations of the band of the video signal can be prevented, improving the definition of the TV picture
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12777477A JPS5460825A (en) | 1977-10-25 | 1977-10-25 | Television picture receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12777477A JPS5460825A (en) | 1977-10-25 | 1977-10-25 | Television picture receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5460825A true JPS5460825A (en) | 1979-05-16 |
JPS6122508B2 JPS6122508B2 (en) | 1986-05-31 |
Family
ID=14968354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12777477A Granted JPS5460825A (en) | 1977-10-25 | 1977-10-25 | Television picture receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5460825A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10897073B2 (en) | 2018-08-27 | 2021-01-19 | Canon Kabushiki Kaisha | Receiver for detecting a terahertz wave and image forming apparatus |
-
1977
- 1977-10-25 JP JP12777477A patent/JPS5460825A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6122508B2 (en) | 1986-05-31 |
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