JPS5851716B2 - Image transmission method - Google Patents
Image transmission methodInfo
- Publication number
- JPS5851716B2 JPS5851716B2 JP14414678A JP14414678A JPS5851716B2 JP S5851716 B2 JPS5851716 B2 JP S5851716B2 JP 14414678 A JP14414678 A JP 14414678A JP 14414678 A JP14414678 A JP 14414678A JP S5851716 B2 JPS5851716 B2 JP S5851716B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- audio
- signals
- band
- receiving side
- 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.)
- Expired
Links
Description
【発明の詳細な説明】
本発明はＮＴＳＣ方式の既存のＴＶ信号伝送系で本来こ
の系で伝送する画像信号の輝度、彩度、信号の伝送に代
えて、制御または連絡用の帯域圧縮された音声信号また
は多値ＰＣＭ信号を伝送し得るようｔこした画像伝送方
式に係り、更に詳述すれば前記帯域圧縮した音声信号お
よび多値ＰＣＭ信号の伝送において受信側の音声トラッ
プによって生じる高域の振幅減衰を送信側で予め補償し
て伝送することにより、前記歪の発生をなくすようにし
た画像伝送方式に関するものである。[Detailed Description of the Invention] The present invention is an existing TV signal transmission system based on the NTSC system, and instead of transmitting the brightness, chroma, and signal of the image signal that is originally transmitted in this system, the band compression for control or communication is performed. It relates to an image transmission method capable of transmitting an audio signal or a multi-value PCM signal, and more specifically, in transmitting the band-compressed audio signal and multi-value PCM signal, high-frequency signals generated by audio traps on the receiving side are transmitted. The present invention relates to an image transmission system that eliminates the occurrence of the distortion by compensating amplitude attenuation in advance on the transmitting side before transmitting.
帯域圧縮した音声や多値ＰＣＭ信号は広帯域伝送路Ｉこ
より伝送していることは知られている。It is known that band-compressed audio and multi-level PCM signals are transmitted over a wideband transmission path I.
また、近年、第１図Ａの如く、画像信号の輝度信号（以
下Ｙ信号と略す）、彩度信号（以下Ｃ信号と略す）波を
示すａの部分に、第１図Ｂの如き帯域圧縮した音声信号
すや、第１図Ｃの如き多値ＰＣＭ信号Ｃを代わりに重畳
し、画像ファイルにファイルしたり、画像伝送路を用い
て伝送することも知られている。In addition, in recent years, as shown in Fig. 1A, band compression as shown in Fig. 1B is applied to the part a indicating the luminance signal (hereinafter abbreviated as Y signal) and chroma signal (hereinafter abbreviated as C signal) wave of the image signal. It is also known to superimpose a multivalued PCM signal C such as that shown in FIG.
第２図に、画像伝送路を用いてＮＴＳＣ画像を伝送する
具体的系統図を示し説明する。FIG. 2 shows a specific system diagram for transmitting an NTSC image using an image transmission path and will be described.
第２図中、１は輝度、彩度信号が入力される端子、２は
ＦＭ音声信号、３は受信側に設置された音声トラップ回
路Ｔにおいて生ずる高域の遅延歪を補償する遅延補償回
路、４は送信アンプであって、重畳した輝度、彩度信号
とＦＭ音声信号を伝送路５に送出するためのものである
。In FIG. 2, 1 is a terminal into which luminance and chroma signals are input, 2 is an FM audio signal, and 3 is a delay compensation circuit that compensates for high-frequency delay distortion occurring in the audio trap circuit T installed on the receiving side. Reference numeral 4 denotes a transmitting amplifier for transmitting the superimposed luminance and chroma signals and the FM audio signal to the transmission line 5.
６は受信側に設けられた受信アンプ、７はＦＭ音声信号
２を除去し、送信側において入力された輝度、彩度信号
と同等の出力信号１′を得る音声トラップ回路、８は輝
度、彩度信号を除去し、送信側において入力されたＦＭ
音声信号２／を得る音声通過フィルタである。6 is a receiving amplifier provided on the receiving side, 7 is an audio trap circuit that removes the FM audio signal 2 and obtains an output signal 1' equivalent to the luminance and chroma signals inputted at the transmitting side, and 8 is a luminance and chroma signal. frequency signal is removed, and the input FM signal is removed at the transmitting side.
This is an audio pass filter that obtains an audio signal 2/.
第２図の如く構成された回路方式においては、入力端子
１より入力された第１図１こ示すＹ、Ｃ信号は、受信側
の音声トラップ回路３によりあらかじめ補償し、４．５
ＭＨｚを搬送波とした入力端子２からのＦＭ音声信号を
重畳して送信アンプ４により伝送路５１こ送出される。In the circuit system configured as shown in FIG. 2, the Y and C signals shown in FIG.
An FM audio signal from the input terminal 2 using MHz as a carrier wave is superimposed and sent out through the transmission line 51 by the transmitting amplifier 4.
伝送路５より伝送された重畳信号は、受信側の受信アン
プ６により受信され、その出力から音声トラップ回路７
でＦＭ音声信号２を取除き、送信側において人力された
輝度、彩度信号と同等の出力信号１′を得る。The superimposed signal transmitted from the transmission line 5 is received by the receiving amplifier 6 on the receiving side, and the output is sent to the audio trap circuit 7.
FM audio signal 2 is removed, and an output signal 1' equivalent to the brightness and chroma signals manually inputted on the transmitting side is obtained.
また音声通過フィルタ８で輝度、彩度信号を取除き、送
信側において入力されたＦＭ音声信号と同等の出力信号
２１を得るというものである。Also, the audio pass filter 8 removes the luminance and chroma signals, and an output signal 21 equivalent to the FM audio signal inputted at the transmitting side is obtained.
しかし、第２図の回路構６＋ｃよると、送信側に設置さ
れた遅延補償回路３に、第１図Ｂの音声信号またはＣの
多値ＰＣＭ信号を入力すると、受信側の音声トラップ回
路７の出力波形のうち４．５ ＭＨｚｆｉｉ分が減青し
、波形歪を生ずるという問題があった。However, according to the circuit structure 6+c in FIG. 2, when the audio signal shown in FIG. 1B or the multilevel PCM signal C in FIG. There was a problem in that 4.5 MHz of the output waveform was blue-reduced, causing waveform distortion.
本発明の目的は、従来の画像伝送路にＮＴＳＣ方式の画
像信号以外の帯域圧縮した音声信号および多値ＰＣＭ信
号を、波形歪を発生させることなく伝送できる方式を提
供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a system that can transmit band-compressed audio signals and multi-value PCM signals other than NTSC image signals over a conventional image transmission path without causing waveform distortion.
そこで本発明は、伝送路の送信側に、受信側音声トラッ
プによる振幅減衰を補償する回路を必要に応じて切替接
続できるようをこ設けることｆこよって、上記目的を達
成したものである。Therefore, the present invention achieves the above object by providing a circuit on the transmitting side of the transmission line so as to be able to switch and connect a circuit for compensating for amplitude attenuation due to voice traps on the receiving side as necessary.
以下第３図に従って本発明を詳述する。The present invention will be described in detail below with reference to FIG.
第３図は本発明の一実施例を示す系統図で、前述の第２
図と同一符号を付しであるものは同二のものを示しであ
る。FIG. 3 is a system diagram showing one embodiment of the present invention.
Items with the same reference numerals as those in the figures indicate the same items.
本実施例においては、帯域圧縮された音声信号および多
値ＰＣＮ信号が入力される専用の端子９を設け、振幅補
償回路１０並び（こ切替器１１を介して輝度、彩度信号
が入力される伝送路ｌこ接続される。In this embodiment, a dedicated terminal 9 is provided to which band-compressed audio signals and multivalued PCN signals are input, and an amplitude compensation circuit 10 (to which luminance and chroma signals are input via a switch 11) is provided. Two transmission lines are connected.
この切替器１１は入力信号に応じて伝送路を端子１ある
いは９に切替接続するものである。This switch 11 switches and connects the transmission line to the terminal 1 or 9 depending on the input signal.
また、受信側においても、音声トラップ回路Ｔの出力部
には、輝度、彩度信号を出力する出力端子１１と音声信
号および＋Ａ、０．−Ａのような正負側の振幅値をそれ
ぞれパルス符号変調する多値ＰＣＭ信号を出力する出力
端子９１に切替接続する切替器１１′が設けてあって、
送信側の切替器１１に応じて切替制御されるように構成
しである。Also, on the receiving side, the output section of the audio trap circuit T has an output terminal 11 for outputting luminance and chroma signals, and an output terminal 11 for outputting audio signals and +A, 0. A switch 11' is provided to switch and connect to an output terminal 91 that outputs a multi-value PCM signal that pulse code modulates positive and negative amplitude values such as -A, respectively.
The configuration is such that switching is controlled according to the switching device 11 on the transmitting side.
第３図の回路（こよると、入力端子９より入力される第
１図ＢまたはＣ（こ示す例えば画像センタとサブセンタ
間等でサブセンタのフレームメモリを制御する制御信号
、センタとサブセンタ間の連結等ｔこ用いる音声信号ま
たは多値ＰＣＭ信号は、振幅補償回路１０Ｉこおいて、
受信側の音声トラップ回路７で生ずる振幅歪のみ補償さ
れ、切替器１１に出力される。The circuit shown in FIG. 3 (accordingly, the control signal shown in FIG. 1 B or C input from the input terminal 9), for example, the control signal for controlling the frame memory of the sub-center between the image center and the sub-center, and the connection between the center and the sub-center. The audio signal or multi-level PCM signal to be used for this purpose is processed by the amplitude compensation circuit 10I,
Only the amplitude distortion occurring in the audio trap circuit 7 on the receiving side is compensated for and output to the switch 11.
切替器１１では目的により輝度、彩度、信号の入力端子
１または帯域圧縮した音声信号の入力端子９側に切替え
、輝度、彩度、信号が帯域圧縮した音声信号のいずれか
を従来の画像伝送方式と同様に受信側ｔこ送出する。Depending on the purpose, the switch 11 switches between input terminal 1 for brightness, saturation, and signals or input terminal 9 for band-compressed audio signals, and transmits either the brightness, chroma, or signal to the band-compressed audio signal for conventional image transmission. Similarly to the method, the receiving side sends out t.
受信側においても、従来と同様に処理されるが、音声ト
ラップ回路γの出力のみ送信側の切替器１１切替制御と
同様に、受信側の切替器１１′でも切替制御され、端子
１および９より輝度、彩度信号および帯域圧縮された音
声信号、多値ＰＣＭ信号を別々ｔこ出力するものである
。On the receiving side, processing is performed in the same manner as before, but only the output of the voice trap circuit γ is switched and controlled by the switching device 11' on the receiving side in the same way as the switching control on the transmitting side switching device 11, and the output from terminals 1 and 9 is controlled. A luminance signal, a chroma signal, a band-compressed audio signal, and a multivalued PCM signal are output separately.
このようｔこ本発明ｔこおいては、画像信号のＹＣ信号
部分に帯域圧縮した音声信号や多値ＰＣＭ信号を挿入し
た信号を伝送する際、従来の画像伝送方式の送信側に、
受信側の音声トラップによる高域の振幅減衰歪を補償す
る回路を付加し、目的に応じて切替接続するようにした
ものである。In this way, in the present invention, when transmitting a signal in which a band-compressed audio signal or a multi-level PCM signal is inserted into the YC signal portion of an image signal, the transmitting side of the conventional image transmission method
A circuit is added to compensate for high-frequency amplitude attenuation distortion caused by voice traps on the receiving side, and connections can be switched depending on the purpose.
したがって、送信側において帯域圧縮した音声信号、多
値ＰＣＭ信号を伝送しても受信側の音声トラップ回路に
より出力が減衰することがなく、波形歪という問題は解
消される。Therefore, even if a band-compressed audio signal or a multilevel PCM signal is transmitted on the transmitting side, the output is not attenuated by the audio trap circuit on the receiving side, and the problem of waveform distortion is solved.
第１図Ａ−Ｃは輝度、彩度信号、帯域圧縮した音声信号
並びに多値ＰＣＭ信号の伝送波形を示す図、第２図は従
来の画像伝送方式を説明するための具体的系統図、第３
図は本発明による画像伝送方式を説明するための具体的
一例を示す系統図である。
１・・・・・・輝度、彩度信号の入力端子、２・・・・
・・ＦＭ音声信号の入力端子、３・・・・・・遅延補償
回路、４・・・・・・送信アンプ、５・・・・・・伝送
路、６・・・・・・受信アンプ、７・・・・・・音声ト
ラップ回路、８・・・・・・音声通過フィルタ、９・・
・・・・音声信号および多値ＰＣＭ信号の入力端子、１
０・・・・・・振幅補償回路、１１，１１’・・・・・
・切替器、１’、２’、９’・・・・・・出力端子。1A to 1C are diagrams showing transmission waveforms of luminance, chroma signals, band-compressed audio signals, and multilevel PCM signals; FIG. 2 is a specific system diagram for explaining the conventional image transmission method; 3
The figure is a system diagram showing a specific example for explaining the image transmission method according to the present invention. 1...Input terminal for brightness and chroma signals, 2...
...FM audio signal input terminal, 3...Delay compensation circuit, 4...Transmission amplifier, 5...Transmission line, 6...Reception amplifier, 7...Audio trap circuit, 8...Audio pass filter, 9...
...Input terminal for audio signal and multi-value PCM signal, 1
0... Amplitude compensation circuit, 11, 11'...
・Switcher, 1', 2', 9'... Output terminal.
Claims (1)
号に周波数変調された音声信号を重畳して伝送し、受信
側で音声トラップおよび音声通過フィルタで前記各信号
を分離して取出すようにしたＮＴＳＣ方式のテレビ画像
伝送系において、受信側の音声トラップによる損失分を
振幅補償すると共に帯域圧縮した音声信号または多値Ｐ
ＣＭ信号と前記輝度、彩度、信号とを切替え入力し得る
ようにし受信側でこれら各信号のいずれかを切替え出力
した際、制御あるいは連絡用として用いる前記帯域圧縮
した音声信号または多値ＰＣＭ信号が前記音声トラップ
により振幅減衰しないように前記帯域圧縮した音声信号
または多値ＰＣＭ信号を送信側で補償するようにしたこ
とを特徴とする画像伝送方式。1 Transmit a frequency-modulated audio signal superimposed on brightness, chroma, and signals that compensate for high-frequency delay distortion from the transmitting side, and separate and extract each of the above signals using an audio trap and an audio pass filter on the receiving side. In the NTSC television image transmission system, the loss due to audio traps on the receiving side is compensated for in amplitude, and the audio signal or multi-value P is band-compressed.
The CM signal and the luminance, saturation, and signals can be switched and input, and when the receiving side switches and outputs any of these signals, the band-compressed audio signal or multi-value PCM signal is used for control or communication. The image transmission system is characterized in that the band-compressed audio signal or the multi-level PCM signal is compensated on the transmitting side so that the amplitude of the signal is not attenuated by the audio trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414678A JPS5851716B2 (en) | 1978-11-24 | 1978-11-24 | Image transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14414678A JPS5851716B2 (en) | 1978-11-24 | 1978-11-24 | Image transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5571370A JPS5571370A (en) | 1980-05-29 |
| JPS5851716B2 true JPS5851716B2 (en) | 1983-11-17 |
Family
ID=15355279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14414678A Expired JPS5851716B2 (en) | 1978-11-24 | 1978-11-24 | Image transmission method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851716B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3094146A1 (en) | 2019-03-22 | 2020-09-25 | Commet Group | Support device in the form of a jib crane for high voltage electric cable |
-
1978
- 1978-11-24 JP JP14414678A patent/JPS5851716B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3094146A1 (en) | 2019-03-22 | 2020-09-25 | Commet Group | Support device in the form of a jib crane for high voltage electric cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5571370A (en) | 1980-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4955048A (en) | Multiplex transmission of audio signal and video signal through inhouse cable | |
| US4139866A (en) | Stereophonic television sound transmission system | |
| US4048654A (en) | Stereophonic television sound transmission system | |
| ATE38755T1 (en) | SYSTEM FOR REDUNDANCY-REDUCING DIGITAL TRANSMISSION OF TELEVISION PICTURE SIGNALS. | |
| US2993086A (en) | Color television system | |
| JPH02210992A (en) | Method and device for supplying improved isolation of audio video spectuums | |
| JPS5851716B2 (en) | Image transmission method | |
| GB1070998A (en) | Improvements in or relating to circuit arrangements for converting a pal system colour television signal into an ntsc system signal and conversely | |
| US2841638A (en) | Method for frequency moldulated color television transmission | |
| US5877820A (en) | Optical transmission of signals | |
| JPH02166979A (en) | Television sound transmitting and receiving system, transmitter and receiver | |
| US4769840A (en) | Receiver for sound multiplex broadcast | |
| EP0401933B1 (en) | Video signal receiving and processing system | |
| SU1103361A1 (en) | Device for transmitting additional information via televison channel | |
| JPH01103349A (en) | Communication equipment | |
| JP2705579B2 (en) | Television broadcast signal receiver | |
| JP2865293B2 (en) | Videophone equipment | |
| JPS6031383A (en) | Television receiver | |
| JPS5938793Y2 (en) | Video signal recording and playback device | |
| JPH0247157B2 (en) | ||
| KR920008627B1 (en) | Television signal process system which transmiter and preceive information detecting motion in tv | |
| US5212543A (en) | Video processor having reduced capacity luminance delay circuit | |
| JPS628986B2 (en) | ||
| JPH05122717A (en) | Color encoder of secam system | |
| JPS622849Y2 (en) |