JPS5861584U - Color signal transmitter/receiver - Google Patents
Color signal transmitter/receiverInfo
- Publication number
- JPS5861584U JPS5861584U JP15414781U JP15414781U JPS5861584U JP S5861584 U JPS5861584 U JP S5861584U JP 15414781 U JP15414781 U JP 15414781U JP 15414781 U JP15414781 U JP 15414781U JP S5861584 U JPS5861584 U JP S5861584U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- color signal
- color
- equal
- 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.)
- Granted
Links
Landscapes
- Color Television Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａおよびｂは広狭両帯域色信号の周波数分布特性
をそれぞれ示す特性曲線図、第２図は同じくそのスペク
トル分布の例を示す線図、第３図ａ、 ｂは本考案色
信号送受信装置における広狭両帯域色信号スペクトル成
分の周波数多量の態様の例をそれぞれ示す線図、第４図
ａ ” ｅは同じ（そのアナログ系による動作原理を順
次に示す線図、第５図は同じくその回路構成の例を示す
ブロック線図、第６図ａ ”−ｅは同じくその回路構成
に用いる各種フィルタの特性例をそれぞれ示す特性曲線
図、第７図ａ−ｅは同じくそのディジタル系による動作
原理を順次に示す線図である。
１．２・・・入力端子、３．４．１３・・・アナログ・
ディジタル変換器、５．１４・・・広帯域フィルタ、６
・・・狭帯域フィルタ、？、 ９． １８． １９・
・・掛算器、ａ、 ｔｏ、 ’ｔ４． １５・・・
低域通過フィルタ、１１・・・加算器、１２．１６．２
０・・・ディジタル・ −アナログ変換器、１７．２１
・・・出力端子。
！−−−カーーーーーFigures 1a and b are characteristic curve diagrams showing the frequency distribution characteristics of both wide and narrow band color signals, Figure 2 is a diagram showing an example of the spectrum distribution, and Figures 3a and b are color signal transmission and reception according to the present invention. Diagrams showing examples of frequency-rich aspects of both wide and narrow band color signal spectral components in the device; A block diagram showing an example of the circuit configuration, Figures 6a-e are characteristic curve diagrams showing examples of the characteristics of various filters used in the circuit configuration, and Figures 7a-e are the operating principles of the digital system. 1.2... Input terminal, 3.4.13... Analog terminal.
Digital converter, 5.14... wideband filter, 6
...Narrowband filter? , 9. 18. 19・
...multiplier, a, to, 't4. 15...
Low-pass filter, 11... Adder, 12.16.2
0...Digital-to-analog converter, 17.21
...Output terminal. ! ---Car
Claims (1)
域色信号および狭帯域色信号として送受信する色信号送
受信装置において、前記広帯域色信号および前記狭帯域
色信号の最高周波数をそれぞれＦＷおよびＦＮとすると
ともに、それら最高周波数ＦＷとＦＮとの差にほぼ等し
い前記カラーテレビジョン信号の水平走査周波数月の％
の奇数倍の周波数をＦ。とじたとき、前記狭帯域色信号
により周波数ＦＮ”にほぼ等しい水平走査周波数ｆＨの
整数倍の周波数Ｆ□を有する第１の搬送波を変調し゛
て第１の下側残留側波帯フィルタを通過させた第１の
被変調搬送波信号により周波数Ｆ１と周波数Ｆｏとの和
の周波数を有する第２の搬送波を再度変調して第２の下
側残留側波帯フィルタを通過させた第２の被変調搬送波
信号と前記広帯域色信号とを加算して形成した和信号を
送信し、受信した前記和信号を、周波数Ｆ。までほぼ平
坦な特性を呈するとともに周波数Ｆ。から周波数ＦＷま
では順次の通過帯域の中心周波数が水平走査周波数ｆＨ
の順次の整数倍にそれぞれ等しい櫛型特性を呈する−
広帯域フィルタに導いて前記広帯域色信号を再生する
とともに、受信した前記和信号を周波数Ｆ。 からＦＷまでの周波数領域において水平走査周波数ｆＨ
の％の順次の奇数倍にそれぞれ等しい中心周波数を有す
る順次の通過帯域を備えた櫛型特性を有するフィルタに
導いた後に前記第２の搬送波と等しい周波数を有する搬
送波信号および前記第１の搬送波に等しい周波数を有す
る搬送信号により順次に復調して前記狭帯域色信号を再
生するようにしたことを特徴とする色信号送受信装置。[Claims for Utility Model Registration] In a color signal transmitting and receiving device that transmits and receives two color signals constituting a color television signal as a wideband color signal and a narrowband color signal, the highest frequency of the wideband color signal and the narrowband color signal is provided. are FW and FN, respectively, and the horizontal scanning frequency of the color television signal is approximately equal to the difference between the highest frequencies FW and FN.
The frequency of an odd multiple of is F. When closing, the narrowband color signal modulates a first carrier wave having a frequency F□ that is an integral multiple of the horizontal scanning frequency fH that is approximately equal to the frequency FN''.
A second carrier wave having a frequency equal to the sum of frequency F1 and frequency Fo is modulated again by the first modulated carrier signal that has passed through the first lower vestigial sideband filter to generate a second lower vestigial sideband filter. A sum signal formed by adding the second modulated carrier signal passed through a sideband filter and the broadband color signal is transmitted, and the received sum signal is set to a frequency F. It exhibits almost flat characteristics up to the frequency F. From FW to frequency FW, the center frequency of successive passbands is the horizontal scanning frequency fH.
Each exhibits a comb-shaped property equal to successive integer multiples of −
The received sum signal is guided to a wideband filter to reproduce the wideband color signal, and the received sum signal is converted to a frequency F. Horizontal scanning frequency fH in the frequency domain from to FW
a carrier signal having a frequency equal to said second carrier wave and said first carrier wave after being guided through a filter having a comb-like characteristic with successive passbands having center frequencies each equal to successive odd multiples of % of A color signal transmitting/receiving device characterized in that the narrowband color signal is reproduced by sequential demodulation using carrier signals having the same frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15414781U JPS5861584U (en) | 1981-10-20 | 1981-10-20 | Color signal transmitter/receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15414781U JPS5861584U (en) | 1981-10-20 | 1981-10-20 | Color signal transmitter/receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5861584U true JPS5861584U (en) | 1983-04-25 |
| JPS6236395Y2 JPS6236395Y2 (en) | 1987-09-16 |
Family
ID=29946746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15414781U Granted JPS5861584U (en) | 1981-10-20 | 1981-10-20 | Color signal transmitter/receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861584U (en) |
-
1981
- 1981-10-20 JP JP15414781U patent/JPS5861584U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6236395Y2 (en) | 1987-09-16 |
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