JPS57152281A - Energy diffusion signal removing circuit - Google Patents
Energy diffusion signal removing circuitInfo
- Publication number
- JPS57152281A JPS57152281A JP3660181A JP3660181A JPS57152281A JP S57152281 A JPS57152281 A JP S57152281A JP 3660181 A JP3660181 A JP 3660181A JP 3660181 A JP3660181 A JP 3660181A JP S57152281 A JPS57152281 A JP S57152281A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- diffusion
- diffusion signal
- synchronizing
- 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
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/08—Separation of synchronising signals from picture signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronizing For Television (AREA)
Abstract
PURPOSE:To obtain sag-free TV signals from which a diffusion signal is removed by subtracting the diffusion signal reproduced by sampling a TV signal from the TV signal superposing the diffusion signal. CONSTITUTION:A TV signal superposing an inputted energy diffusion signal is branched and inputted to clamping circuits 7, 8. A synchronizing pulse signal from which the diffusion signal and a sag are removed is obtained by using a diode clamping circuit using a capacitor with small capacity for the circuit 8 and selecting a cutting level of a synchronizing separation circuit 9, and the signal is used as a gate signal for a sample holding circuit 11. A signal superposing the diffusion signal is obtained by using a diode clamping circuit using a capacitor with large capacity for the circuit 7. A diffusion signal is obtained by gating the superposed signal by a synchronizing signal from the circuit 9 in the circuit 11 and then holding signal until the next synchronizing signal. The diffusion signal waveform is subtracted from the output of the circuit 7 by a subtraction circuit 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3660181A JPS57152281A (en) | 1981-03-16 | 1981-03-16 | Energy diffusion signal removing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3660181A JPS57152281A (en) | 1981-03-16 | 1981-03-16 | Energy diffusion signal removing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57152281A true JPS57152281A (en) | 1982-09-20 |
Family
ID=12474309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3660181A Pending JPS57152281A (en) | 1981-03-16 | 1981-03-16 | Energy diffusion signal removing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57152281A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60250793A (en) * | 1984-05-28 | 1985-12-11 | Nippon Hoso Kyokai <Nhk> | Energy diffusing system |
JPS6251885U (en) * | 1985-09-19 | 1987-03-31 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830813A (en) * | 1971-08-24 | 1973-04-23 | ||
JPS555552A (en) * | 1978-06-28 | 1980-01-16 | Matsushita Electric Ind Co Ltd | Dc reproducing circuit |
-
1981
- 1981-03-16 JP JP3660181A patent/JPS57152281A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830813A (en) * | 1971-08-24 | 1973-04-23 | ||
JPS555552A (en) * | 1978-06-28 | 1980-01-16 | Matsushita Electric Ind Co Ltd | Dc reproducing circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60250793A (en) * | 1984-05-28 | 1985-12-11 | Nippon Hoso Kyokai <Nhk> | Energy diffusing system |
JPH0462513B2 (en) * | 1984-05-28 | 1992-10-06 | Japan Broadcasting Corp | |
JPS6251885U (en) * | 1985-09-19 | 1987-03-31 |
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