JPS5783970A - Synchronizing pulse separating circuit - Google Patents
Synchronizing pulse separating circuitInfo
- Publication number
- JPS5783970A JPS5783970A JP16003580A JP16003580A JPS5783970A JP S5783970 A JPS5783970 A JP S5783970A JP 16003580 A JP16003580 A JP 16003580A JP 16003580 A JP16003580 A JP 16003580A JP S5783970 A JPS5783970 A JP S5783970A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- delay
- addition
- same amplitude
- amplitude value
- 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 regenerate stable, high-precision vertical synchronizing pulses from a video signal containing waveform distortion, by using an addition video signal obtained by adding a video signal and its delay signal with the same amplitude value. CONSTITUTION:When a video signal l1 is applied, an adder 4a adds this input video signal and a delay video signal, delayed a constant time behind the said video signal by a delay circuit 4b, with nearly the same amplitude value, and the gain is reduced to half by an attenuator 4c to obtain an addition video signal at a terminal l2. The delay time value is set nearly equal to the pulse width of horizontal synchronizing pulses. Then, this addition video signal is applied to a trailing low-pass filter 5 to remove unnecessary high-frequency components.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16003580A JPS5783970A (en) | 1980-11-13 | 1980-11-13 | Synchronizing pulse separating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16003580A JPS5783970A (en) | 1980-11-13 | 1980-11-13 | Synchronizing pulse separating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5783970A true JPS5783970A (en) | 1982-05-26 |
Family
ID=15706531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16003580A Pending JPS5783970A (en) | 1980-11-13 | 1980-11-13 | Synchronizing pulse separating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5783970A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082877U (en) * | 1983-11-14 | 1985-06-08 | 三洋電機株式会社 | Vertical synchronization signal separation circuit for television receivers |
FR2644025A1 (en) * | 1989-03-03 | 1990-09-07 | Thomson Csf | Device for extracting "3 state" pulses in a noisy medium |
-
1980
- 1980-11-13 JP JP16003580A patent/JPS5783970A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082877U (en) * | 1983-11-14 | 1985-06-08 | 三洋電機株式会社 | Vertical synchronization signal separation circuit for television receivers |
JPH0441659Y2 (en) * | 1983-11-14 | 1992-09-30 | ||
FR2644025A1 (en) * | 1989-03-03 | 1990-09-07 | Thomson Csf | Device for extracting "3 state" pulses in a noisy medium |
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