JPS634579A - Antenna receptacle plug - Google Patents
Antenna receptacle plugInfo
- Publication number
- JPS634579A JPS634579A JP61148770A JP14877086A JPS634579A JP S634579 A JPS634579 A JP S634579A JP 61148770 A JP61148770 A JP 61148770A JP 14877086 A JP14877086 A JP 14877086A JP S634579 A JPS634579 A JP S634579A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- antenna
- branch
- video equipment
- video
- 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
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (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
【発明の詳細な説明】
産業上の利用分野
本発明は同軸ケーブルを介して映像信号を送受信するホ
ームバスシステムにおいて、メインバスより映像信号を
分岐して取り出すための分岐器と映像機器とを継ぐケー
ブルに取付けるアンテナコンセントプラグに関するもの
である。[Detailed Description of the Invention] Industrial Application Field The present invention is a home bus system that transmits and receives video signals via a coaxial cable, in which a brancher for branching and extracting video signals from a main bus is connected to video equipment. This relates to an antenna outlet plug attached to a cable.
従来の技術
同軸ケーブルを介して映像信号を送受信するホームバス
システムの構成を第２図に示す。BACKGROUND OF THE INVENTION FIG. 2 shows the configuration of a home bus system that transmits and receives video signals via a conventional coaxial cable.
第２図において、１２は同軸ケーブルであり、アンテナ
２０からの映像信号および情報パケットを流す伝送媒体
となる。１３は同軸ケーブルバスから映像信号および情
報パケットを取り出すための分岐器であり、映像信号用
分岐端子１４および、情報パケット用分岐端子１５を持
つ、１６は通信制御装置であり、情報パケット用分岐端
子１５を介して情報パケットを送受信する。１７は分岐
用ケーブルであり、映像信号用分岐端子１４に接続され
ている。分岐用ケーブル１７の先端には映像機器のアン
テナ端子に接続するだめのアンテナコンセントプラグ１
９が取り付けられている。１８岐して取り出すための分
岐器と映像機器とを継ぐ分岐用ケーブル１７が、映像機
器に継がっていればインピーダンス整合がとれているの
で問題はないが、映像機器を取りはずして分岐用ケーブ
ルだけを分岐器に取付けておくと、映像信号が開放端で
全反射し問題となる。分岐用ケーブルのケーブル長を４
１光の速度をＣとすると、
ｆｎ ＝ （１＋２ｎ ）Ｃ／（４ｆｆ ）（ｎ＝ｏ、
１，２．−・−りなる周波数ｆｎの信号は分岐用ケーブ
ル上で分岐点が節となる定在波を生じる。よって、この
付近の周波数の信号はメインバス上で大きく減衰する。In FIG. 2, 12 is a coaxial cable, which serves as a transmission medium through which video signals and information packets from the antenna 20 are transmitted. 13 is a branching device for taking out video signals and information packets from the coaxial cable bus, and has a video signal branching terminal 14 and an information packet branching terminal 15; 16 is a communication control device, which has a branching terminal for information packets; 15 to transmit and receive information packets. A branch cable 17 is connected to the video signal branch terminal 14. At the tip of the branch cable 17 is an antenna outlet plug 1 for connecting to the antenna terminal of the video equipment.
9 is attached. If the branch cable 17 that connects the video equipment to the video equipment is connected to the video equipment, there is no problem since impedance matching is achieved, but if the video equipment is removed and the video equipment is removed, there is no problem. If it is attached to a branch, the video signal will be totally reflected at the open end, causing a problem. The cable length of the branch cable is 4.
If the speed of 1 light is C, then fn = (1+2n)C/(4ff)(n=o,
1, 2. A signal with a different frequency fn generates a standing wave on the branching cable, with the branching point serving as a node. Therefore, signals with frequencies around this area are greatly attenuated on the main bus.
従来、上記の現象による映像信号の減衰を防ぐだめに、
映像機器を取りはずしたケーブルの先端に特性インピー
ダンスを有した専用の終端器を取付けていた。Conventionally, in order to prevent video signal attenuation due to the above phenomenon,
A special terminator with characteristic impedance was attached to the end of the cable from which the video equipment was removed.
問題点を解決するための手段
本発明は同軸ケーブルを介して映像信号を送受信するホ
ームバスシステムの分岐器と映像機器とを継ぐ分岐用ケ
ーブルに取付けるアンテナコンセントプラグに、映像機
器に接続すれば自動的に終端器が離脱され、映像機器か
ら取りはずせば自動的に終端器がセットされる様な機構
を持たせる。Means for Solving the Problems The present invention provides an automatic system that automatically transmits and receives video signals by connecting it to the antenna outlet plug attached to the branch cable that connects the video equipment and the branch of a home bus system that transmits and receives video signals via a coaxial cable. A mechanism is provided so that the terminator can be removed automatically and automatically set when removed from the video equipment.
作用
本発明は上記した機構により、分岐用ケーブルを映像機
器に着脱する際に終端器を脱着する手間を省き、終端器
を保管しておかねばならないわずられしさを解消し、終
端器の付は忘れによる映像信号の劣化を防止することが
できる。The present invention uses the above-described mechanism to eliminate the trouble of attaching and detaching the terminator when attaching and detaching the branch cable to the video equipment, eliminates the trouble of having to store the terminator, and eliminates the trouble of attaching the terminator. can prevent video signal deterioration due to forgetting.
実施例
第１図は本発明の自動終端機能付アンテナコンセントプ
ラグの一実施例である。第１図において、１は芯線コン
タクト、２は外被コンタクトで従来のアンテナコンセン
トと同様の構成である。３は電気絶縁物より成るリング
、４は電気絶縁物より成る切断棒で３のリングに固定し
ておく。５は終端器のオン、オフを行なうための板バネ
形の接点スイッチである。６は終端用抵抗、７は分岐用
ケーブル、８はケーブルの外被、９はケーブルの芯線で
ある。１０はケースである。１１はスプリングである。Embodiment FIG. 1 shows an embodiment of the antenna outlet plug with automatic termination function of the present invention. In FIG. 1, 1 is a core wire contact and 2 is a jacket contact, which has the same structure as a conventional antenna outlet. 3 is a ring made of an electrically insulating material, and 4 is a cutting rod made of an electrically insulating material that is fixed to the ring 3. 5 is a leaf spring type contact switch for turning on and off the terminator. 6 is a terminating resistor, 7 is a branching cable, 8 is a cable jacket, and 9 is a core wire of the cable. 10 is a case. 11 is a spring.
次に、本実施例の動作について説明する。本発明を映像
機器のアンテナコンセントに装着すれば、アンテナコン
セントの外被コンタクトが外被コンタクト２に密着しな
がら絶縁リング３を押し込む形となり、スイッチ駆動棒
４が接点スイッチ５を開状態にする。これで終端抵抗６
が芯線コンタクト１と外被コンタクト２の間から離脱さ
れる。次に本発明のアンテナコンセントプラグをアンテ
ナコンセントから抜き取ると、スプリング１１の力によ
り、絶縁リング３とスイッチ駆動棒４が押しもどされ、
接点スイッチ５が閉状態となる。これで、芯線コンタク
ト１と外被コンタクト２の間に終端抵抗６が装着される
。Next, the operation of this embodiment will be explained. When the present invention is attached to an antenna outlet of a video equipment, the outer sheath contact of the antenna outlet presses in the insulating ring 3 while closely contacting the outer sheath contact 2, and the switch drive rod 4 opens the contact switch 5. Now the terminating resistor 6
is separated from between the core wire contact 1 and the outer sheath contact 2. Next, when the antenna outlet plug of the present invention is removed from the antenna outlet, the insulating ring 3 and switch drive rod 4 are pushed back by the force of the spring 11.
The contact switch 5 is in a closed state. The terminating resistor 6 is now installed between the core wire contact 1 and the outer sheath contact 2.
発明の効果
以上のように、本発明によれば、同軸ケーブルを介して
映像信号を送受信するホームバスシステムの分岐器と映
像機器とをつなぐ分岐用ケーブルを映像機器に接続すれ
ば自動的に終端器が離脱され、映像機器から取りはずせ
ば自動的に分岐用ケーブルの先端が終端されるため、映
像機器を分岐用ケーブルに着脱する際の終端器の脱着の
手間を省き、終端器を保管しておかねばならないわずら
れしさを解消し、終端器の付は忘れによる映像信号の劣
化を防止することができ、実用上きわめて有用である。Effects of the Invention As described above, according to the present invention, when the branching cable that connects the video equipment to the branch of the home bus system that transmits and receives video signals via the coaxial cable is connected to the video equipment, it is automatically terminated. The end of the branch cable is automatically terminated when the video equipment is removed from the video equipment, eliminating the trouble of attaching and removing the terminator when attaching/detaching the video equipment to the branch cable, and making it easier to store the terminator. It is extremely useful in practice, as it eliminates the hassle of having to keep the terminal in place and prevents deterioration of the video signal due to forgetting to attach the terminator.
第１図は本発明の一実施例の自動終端機能付アンテナコ
ンセントプラグの断面図、第２図は同軸ケーブルを介し
て映像信号を送受信するホームバスシステムの構成図で
ある。
１・・・・・・芯線コンタクト、２・・・・・・外被コ
ンタクト、３・・・・・・電気絶縁リング、４・・・・
・・スイッチ駆動棒、５・・・・・・板バネ形接点スイ
ッチ、６・・・・・・終端用抵抗、了・・・・・・分岐
用ケーブル、８・・・・・・ケーブルの外被、９・・・
・・・ケーブルの芯線、１１・・・・・・スプリング、
１２・・・・・・同軸ケーブル、１３・・・・・・分岐
器、１４・・・・・・映像信号用分岐端子、１５・・・
・・・情報パケット用分岐端子、１６・・・・・・通信
制御装置、１了・・・・・・分岐用ケーブル、１８・・
・・・・終端器、１９・・・・・・アンテナコンセント
プラグ。FIG. 1 is a sectional view of an antenna outlet plug with an automatic termination function according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a home bus system that transmits and receives video signals via a coaxial cable. 1... Core wire contact, 2... Outer contact, 3... Electrical insulation ring, 4...
...Switch drive rod, 5...Plate spring type contact switch, 6...Terminal resistor, End...Branch cable, 8...Cable Outer covering, 9...
... Cable core wire, 11 ... Spring,
12...Coaxial cable, 13...Brancher, 14...Video signal branch terminal, 15...
...Branch terminal for information packet, 16...Communication control device, 1 end...Branch cable, 18...
...Terminator, 19...Antenna outlet plug.
Claims (1)
記抵抗器を芯線と外被に接続するためのスイッチと、ア
ンテナコンセントに装着した際に前記スイッチを開くた
めのスイッチ駆動体と、アンテナコンセントから抜いた
際に前記スイッチ駆動体を押しもどしスイッチを閉じる
ためのスプリングで構成されたアンテナコンセントプラ
グ。A resistor for terminating the outer cover contact and the core wire, a switch for connecting the resistor to the core wire and the outer cover, a switch driver for opening the switch when attached to an antenna outlet, and an antenna. An antenna outlet plug configured with a spring that pushes back the switch driver and closes the switch when it is unplugged from the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61148770A JPS634579A (en) | 1986-06-25 | 1986-06-25 | Antenna receptacle plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61148770A JPS634579A (en) | 1986-06-25 | 1986-06-25 | Antenna receptacle plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS634579A true JPS634579A (en) | 1988-01-09 |
Family
ID=15460268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61148770A Pending JPS634579A (en) | 1986-06-25 | 1986-06-25 | Antenna receptacle plug |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634579A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63115207U (en) * | 1987-01-22 | 1988-07-25 |
-
1986
- 1986-06-25 JP JP61148770A patent/JPS634579A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63115207U (en) * | 1987-01-22 | 1988-07-25 |
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