SU1626456A1 - Decoder - Google Patents
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- Publication number
- SU1626456A1 SU1626456A1 SU884608671A SU4608671A SU1626456A1 SU 1626456 A1 SU1626456 A1 SU 1626456A1 SU 884608671 A SU884608671 A SU 884608671A SU 4608671 A SU4608671 A SU 4608671A SU 1626456 A1 SU1626456 A1 SU 1626456A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- input
- frequency
- filter
- output
- channel
- Prior art date
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- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Abstract
Изобретение относитс к телевизионной технике и может быть использовано в приемной телевизионной аппаратуре системы СЕКАМ. Цель изобретени - повышение точности восстановлени цветоразностного сигнала путем уменьшени времени переходного процесса. Декодирующее устройство содержит фильтр 1 коррекции высокочастотных предыскажений, конденсатор 2. вход 3 устройства, лвухканальный коммутатор 4, вход 5 управлени , усилитель-ограничитель 6, частотный детектор 7, вход 8 стробироеани , дискриминатор 9, фильтр 10. Коммутатор 4, управл емый импульсами строчной частоты по входу 5. подает на усилитель-ограничитель 5 во врем срочного гас щего импульса сигнал с выхода фильтра 10. При этом защитные пакеты «смодулированной поднесущей подаютс на частотный детектор 7 без искажений, что позвол ет повысить точность восстановлений посто нной составл ющей цветоразностных сигналов . 3 ил. ч ЁThe invention relates to television technology and can be used in the receiving television equipment of the SECAM system. The purpose of the invention is to improve the accuracy of the recovery of the color difference signal by reducing the transient time. The decoding device contains a high-frequency predistortion correction filter 1, a capacitor 2. devices 3 input, two-channel switch 4, control input 5, limiting amplifier 6, frequency detector 7, sampling input 8, discriminator 9, filter 10. Switching switch 4, controlled by lower-case pulses frequency at input 5. delivers to the limiting amplifier 5 during an urgent extinguishing pulse a signal from the output of filter 10. In this case, the modulated subcarrier's protective packets are fed to the frequency detector 7 without distortion, which allows to improve the accuracy of the restoration of the constant component of the color difference signals. 3 il. h y
Description
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884608671A SU1626456A1 (en) | 1988-11-24 | 1988-11-24 | Decoder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU884608671A SU1626456A1 (en) | 1988-11-24 | 1988-11-24 | Decoder |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1626456A1 true SU1626456A1 (en) | 1991-02-07 |
Family
ID=21410795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU884608671A SU1626456A1 (en) | 1988-11-24 | 1988-11-24 | Decoder |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1626456A1 (en) |
-
1988
- 1988-11-24 SU SU884608671A patent/SU1626456A1/en active
Non-Patent Citations (1)
Title |
---|
Франци за вка № 2551295, кл. Н 04 N 9/445, Н 04 N 11/18, 1983. * |
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