SU645289A1 - Method of transmitting sound background for television signal - Google Patents
Method of transmitting sound background for television signalInfo
- Publication number
- SU645289A1 SU645289A1 SU752142104A SU2142104A SU645289A1 SU 645289 A1 SU645289 A1 SU 645289A1 SU 752142104 A SU752142104 A SU 752142104A SU 2142104 A SU2142104 A SU 2142104A SU 645289 A1 SU645289 A1 SU 645289A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pulse
- code
- television signal
- transmitting sound
- transmitting
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
- H04N7/085—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only the inserted signal being digital
Description
1one
Изобретение относитс к способу передачи звуковых сопровождений телевизионного сигнала посредством импульсно-кодового стробировани , передаваемого в видеосигнале .The invention relates to a method for transmitting audio signals of a television signal by means of a pulse code gating transmitted in a video signal.
Известен способ передачи программ звукового сопровождени телевизионного сигнала путем передачи во врем строчного гас щего импульса импульсно-кодовых посылок с переменным шагом квантовани , заключающийс в разделении программ на передающей стороне на основную, передаваемую с помощью двух импульсно-кодовых посылок за период строчной развертки, и вспомогательные, передаваемые с помощью одной импульсно-кодовой посылки за тот же период, с последующей демодул цией на приемной стороне {.A known method of transmitting television sounding programs by transmitting, during a horizontal quenching pulse, variable-quantization pulses and code transmissions, consists in dividing the programs on the transmitting side into the main, transmitted using two pulse-coded transmissions during the horizontal scanning period, and auxiliary transmitted using one pulse code package for the same period, followed by demodulation on the receiving side {.
Однако этот способ требует расширени полосы частот передаваемых сигналов.However, this method requires an expansion of the frequency band of the transmitted signals.
Цель изобретени - уменьшение полосы частот передаваемых сигналов.The purpose of the invention is to reduce the frequency band of transmitted signals.
Дл этого в способе передачи программ звукового сопровождени телевизионного сигнала путем передачи во врем строчного гас щего импульса импульсно-кодовых посылок с переменным шагом квантовани , заключающемс в разделении программ наTo do this, in the method of transmitting television sound programs by transmitting, during a horizontal quenching pulse, pulsed code premises with a variable quantization step, consisting in dividing the programs into
передающей стороне на основную, передаваемую с помощью двух импульсно-кодовых посылок за период строчной развертки , и вспомогательные, передаваемые с помощью одной импульсно-кодовой посылки за тот же период, с последующей демодул цией на приемной стороне, формируют код, разрешающий демодул цию сигнала основного канала, и передают его по каналу не используемой в данный момент времени вспомогательной программы звукового сопровождени , при прекращении передачи кода демодулируют сигнал вспомогательной программы, при этом исключаютto the transmitting side to the main one transmitted using two pulse-code parcels for the horizontal scanning period, and auxiliary ones transmitted by one pulse-code parcel for the same period, followed by demodulation on the receiving side, form a code allowing the demodulation of the main signal channel, and transmit it through the channel of the auxiliary audio program not used at the moment, when the transmission of the code is stopped, the signal of the auxiliary program is demodulated, while
строчный синхроимпульс и формируют вспомогательный синхроимпульс, пол рность и положение фронта которого совпадает с пол рностью и положением фронта погашенного синхроимпульса, положениеhorizontal sync pulse and form an auxiliary sync pulse, the polarity and position of the front of which coincides with the polarity and position of the front of the canceled sync pulse, the position
спада которого определ ют формированием двухбитового кода, перед которым располагают импульсы маркера, указывающие на начало передачи импульсно-кодовых посылок в данном интервале гас щего импульса .The decay of which is determined by the formation of a two-bit code, in front of which the marker pulses are located, indicating the start of the transmission of the pulse-code messages in a given damping interval.
Сущность способа по сн етс чертежом. Положение сигнала импульсно-кодовой модул ции С на чертеже задано через длиThe essence of the method is illustrated in the drawing. The position of the pulse code modulation signal C in the drawing is given after
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS368974A CS171516B1 (en) | 1974-05-23 | 1974-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU645289A1 true SU645289A1 (en) | 1979-01-30 |
Family
ID=5377677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU752142104A SU645289A1 (en) | 1974-05-23 | 1975-05-22 | Method of transmitting sound background for television signal |
Country Status (5)
| Country | Link |
|---|---|
| CS (1) | CS171516B1 (en) |
| DD (1) | DD118495A1 (en) |
| FR (1) | FR2272559A1 (en) |
| HU (1) | HU175310B (en) |
| SU (1) | SU645289A1 (en) |
-
1974
- 1974-05-23 CS CS368974A patent/CS171516B1/cs unknown
-
1975
- 1975-05-19 HU HU75TE825A patent/HU175310B/en unknown
- 1975-05-21 DD DD18616075A patent/DD118495A1/xx unknown
- 1975-05-22 FR FR7515994A patent/FR2272559A1/en active Granted
- 1975-05-22 SU SU752142104A patent/SU645289A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2522947B2 (en) | 1977-02-17 |
| DE2522947A1 (en) | 1975-11-27 |
| FR2272559B3 (en) | 1978-12-01 |
| FR2272559A1 (en) | 1975-12-19 |
| HU175310B (en) | 1980-06-28 |
| DD118495A1 (en) | 1976-03-05 |
| CS171516B1 (en) | 1976-10-29 |
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