JPS62117852U - - Google Patents
Info
- Publication number
- JPS62117852U JPS62117852U JP373886U JP373886U JPS62117852U JP S62117852 U JPS62117852 U JP S62117852U JP 373886 U JP373886 U JP 373886U JP 373886 U JP373886 U JP 373886U JP S62117852 U JPS62117852 U JP S62117852U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmission cable
- delay amount
- frequency
- transmitter
- 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
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims 4
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Studio Circuits (AREA)
Description
第１図は本考案装置の１実施例を示すブロツク
図、第２図は従来装置のブロツク図である。
１…ビデオカメラ、２…受信機、３…伝送ケー
ブル、５…ケーブル長判別回路、６…利得制御増
幅器、９…高周波発振器、１０…位相検波回路。
FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG. 2 is a block diagram of a conventional device. DESCRIPTION OF SYMBOLS 1... Video camera, 2... Receiver, 3... Transmission cable, 5... Cable length determination circuit, 6... Gain control amplifier, 9... High frequency oscillator, 10... Phase detection circuit.
Claims (1)
ケーブルを介して受信機に信号を伝送する信号伝
送システムにおいて、 前記受信機側に特定周波数の高周波信号を発生
する高周波発振手段と、前記高周波信号を前記信
号伝送線の１つを介して一旦送信機側まで伝送す
るとともに送信機側よりもう１つの信号伝送線を
介して再び受信機側に折返し返送されて来る折返
し信号の伝送ケーブル長に応じた信号遅延量を検
出する遅延量検出手段と、送信機側から受信機側
に伝送されて来る信号の減衰を前記遅延量検出手
段の検出出力に基いて補償する利得補償手段とを
具備してなり、 伝送ケーブルロスを自動的に補償するようにし
たことを特徴とする伝送ケーブルロス自動補償装
置。 ２ 前記遅延量検出手段として位相検波回路を用
いることを特徴とする前記実用新案登録請求の範
囲１記載の伝送ケーブルロス自動補償装置。[Claims for Utility Model Registration] 1. In a signal transmission system that transmits a signal from a transmitter to a receiver via a transmission cable that bundles multiple signal transmission lines, a high-frequency signal of a specific frequency is generated on the receiver side. a high-frequency oscillation means for transmitting the high-frequency signal, the high-frequency signal is once transmitted to the transmitter side via one of the signal transmission lines, and is then looped back from the transmitter side to the receiver side via another signal transmission line. a delay amount detection means for detecting a signal delay amount corresponding to the transmission cable length of an incoming return signal; and compensation for attenuation of the signal transmitted from the transmitter side to the receiver side based on the detection output of the delay amount detection means. 1. An automatic transmission cable loss compensation device, comprising: gain compensation means for automatically compensating for transmission cable loss. 2. The transmission cable loss automatic compensation device according to claim 1, wherein a phase detection circuit is used as the delay amount detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP373886U JPS62117852U (en) | 1986-01-14 | 1986-01-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP373886U JPS62117852U (en) | 1986-01-14 | 1986-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62117852U true JPS62117852U (en) | 1987-07-27 |
Family
ID=30783771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP373886U Pending JPS62117852U (en) | 1986-01-14 | 1986-01-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62117852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011082835A (en) * | 2009-10-07 | 2011-04-21 | Nec Corp | Radio base station device, control method of the same, and program |
-
1986
- 1986-01-14 JP JP373886U patent/JPS62117852U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011082835A (en) * | 2009-10-07 | 2011-04-21 | Nec Corp | Radio base station device, control method of the same, and program |
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