JPS6230532B2 - - Google Patents
Info
- Publication number
- JPS6230532B2 JPS6230532B2 JP55012700A JP1270080A JPS6230532B2 JP S6230532 B2 JPS6230532 B2 JP S6230532B2 JP 55012700 A JP55012700 A JP 55012700A JP 1270080 A JP1270080 A JP 1270080A JP S6230532 B2 JPS6230532 B2 JP S6230532B2
- Authority
- JP
- Japan
- Prior art keywords
- branch
- terminal
- circuit
- signal
- carrier
- 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
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Details Of Television Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
【発明の詳細な説明】
本発明は、例えばUHF，VHF帯テレビ信号と
例えば搬送式インターホン信号等の相互通信信号
とを共存させる有線通信設備に使用される分岐器
の回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circuit for a branching switch used in wired communication equipment that allows for example UHF and VHF band television signals to coexist with mutual communication signals such as carrier intercom signals.
搬送式インターホンの通信回線として、テレビ
共同受信設備を共用することが考えられる。例え
ば、第１図に示した有線通信設備の配線図を用い
て説明すると、分岐器２の分岐端子２ａ，２ｃに
はそれぞれテレビ受像機３が接続され、また２
ｂ，２ｄにはそれぞれ搬送式インターホン４が接
続される。かゝる配線状態において、受信アンテ
ナ１で受信されたテレビ信号は、分岐器２の分岐
端子２ａ，２ｃに接続されたテレビ受像機３にそ
れぞれ供給される。一方、搬送式インターホン相
互の通話信号は分岐器２の分岐端子２ｂ，２ｄ間
を行き来する。ところが周知のように、テレビ共
同受信に用いられる分岐器は、第２図を用いて説
明するに、入力端子５から分岐端子７へ分岐され
る信号は例えば10dBの減衰を受け、また出力端
子６から分岐端子７へ抜ける信号は30dBの減衰
を受けるといつた方向性を有するため、分岐器２
の分岐端子２ｂ，２ｄ間を行き来する通話信号そ
れぞれは、分岐器２に上記例の分岐器を使用した
場合、10dBと30dBを加算した40dBとなり、これ
は相手の搬送インターホンからの信号が比率で表
わすと100分の１に減じられることを意味し、通
信の明瞭度が著しく低下するといつた問題点があ
る。 It is conceivable to share common television reception equipment as the communication line for the carrier intercom. For example, to explain using the wiring diagram of wired communication equipment shown in FIG.
A transport type intercom 4 is connected to each of b and 2d. In such a wiring state, the television signal received by the receiving antenna 1 is supplied to the television receiver 3 connected to the branch terminals 2a, 2c of the branching device 2, respectively. On the other hand, communication signals between the carrier type intercoms go back and forth between the branch terminals 2b and 2d of the branching device 2. However, as is well known, in the branching device used for communal television reception, as explained using FIG. Since the signal passing from branch terminal 7 to branch terminal 7 has a directionality such that it is attenuated by 30 dB, branch terminal 2
If the above example branch switch is used as the branch terminal 2, each call signal going back and forth between branch terminals 2b and 2d will be 40 dB, which is the sum of 10 dB and 30 dB, which means that the signal from the other party's carrier intercom is This means that the number is reduced to 1/100, and there is a problem that the clarity of communication is significantly reduced.
本発明は、搬送式インターホンの通信回線とし
てテレビ共同受信設備を共用させる場合に用いて
好適な分岐器の回路を提供することを目的とす
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide a branch circuit suitable for use when a common television reception facility is shared as a communication line for a carrier type intercom.
以下、本発明を図面により説明する。 Hereinafter, the present invention will be explained with reference to the drawings.
第３図は本発明の分岐器の回路を示すもので、
８は入力端子、９は出力端子、１０は分岐端子、
Ｔ１は結合トランスで、Ｌ１を１次巻線、Ｌ２を
２次巻線としてそれらは互いに充分な結合状態で
フエライト磁芯に巻かれて構成され、１次巻線Ｌ
１のａ側は入力端子８の中心導体８′に接続さ
れ、ｂ側は出力端子９の中心導体９′に接続され
る。２次巻線Ｌ２のｃ側は接地され、ｄ側は分岐
端子１０の中心導体１０′に接続される。Ｔ２は
Ｔ１と同じく結合トランスでＬ３を１次巻線、Ｌ
４を２次巻線として、それらは互いに充分な結合
状態でフエライト磁芯に巻かれ、１次巻線Ｌ３の
ｅ側は入力端子８の中心導体８′に接続されｆ側
は接地される。２次巻線Ｌ４のｇ側は抵抗１４を
介して接地され、ｈ側はコンデンサー１２とコイ
ル１３で構成される並列共振回路１１を介して分
岐端子１０の中心導体１０′に接続される。 FIG. 3 shows the circuit of the branching switch of the present invention.
8 is an input terminal, 9 is an output terminal, 10 is a branch terminal,
T1 is a coupling transformer, L1 is a primary winding, L2 is a secondary winding, and these are wound around a ferrite core in a sufficiently coupled state, and the primary winding L
The a side of 1 is connected to the center conductor 8' of the input terminal 8, and the b side is connected to the center conductor 9' of the output terminal 9. The c side of the secondary winding L2 is grounded, and the d side is connected to the center conductor 10' of the branch terminal 10. T2 is a coupling transformer like T1, with L3 as the primary winding and L
4 is used as a secondary winding, and they are wound around a ferrite magnetic core in a sufficiently coupled state, and the e side of the primary winding L3 is connected to the center conductor 8' of the input terminal 8, and the f side is grounded. The g side of the secondary winding L4 is grounded via a resistor 14, and the h side is connected to the central conductor 10' of the branch terminal 10 via a parallel resonant circuit 11 composed of a capacitor 12 and a coil 13.
次に、上記構成の分岐回路について例えば入力
端子８、出力端子９、分岐端子１０、のインピー
ダンスがそれぞれ75Ω、結合損失10dBで搬送式
インターホンの信号周波数が20MHzであつた場合
の分岐回路を得る場合における各部の定数につい
て説明する。 Next, regarding the branch circuit with the above configuration, for example, when obtaining a branch circuit when the impedance of the input terminal 8, output terminal 9, and branch terminal 10 is 75 Ω each, the coupling loss is 10 dB, and the signal frequency of the carrier intercom is 20 MHz. The constants of each part in will be explained.
結合トランスＴ１はフエライト磁芯を用いて、
それに１次巻線Ｌ１と２次巻線Ｌ２を巻数比１：
３で巻き、整合トランスＴ２はフエライト磁芯を
用いて、それに１次巻線Ｌ３と２次巻線Ｌ４を巻
数比３：１で巻く。抵抗１４は75Ω、並列共振回
路１１のコンデンサー１２は20PF、コイル１３
は３μＨとする。 The coupling transformer T1 uses a ferrite magnetic core,
In addition, the primary winding L1 and the secondary winding L2 are connected at a turns ratio of 1:
The matching transformer T2 uses a ferrite magnetic core, and a primary winding L3 and a secondary winding L4 are wound thereon at a turns ratio of 3:1. Resistor 14 is 75Ω, capacitor 12 of parallel resonant circuit 11 is 20PF, coil 13
is 3μH.
第４図は上記数値で構成された分岐回路につい
ての特性図を示すもので、Ａは挿入損失で、入力
端子８から信号を入れた場合における出力端子９
での信号の損失量、Ｂは結合損失で入力端子８か
ら信号を入れた場合における分岐端子１０での信
号の損失量、Ｃは逆結合損失で出力端子９から信
号を入れた場合における分岐端子１０での信号の
損失量を示す。図に示す様にテレビの周波数帯域
において90〜222MHzのVHF帯では結合損失
10dB、逆結合損失30〜35dB、挿入損失1dB、470
〜770MHzのUHF帯では結合損失11dB、逆結合損
失20〜25dB、挿入損失1.5dB、搬送式インターホ
ンの使用周波数である20MHzにおいて結合損失
11dB、逆結合損失12dB、挿入損失1.2dBの特性が
得られた。尚、上記分岐器を２個縦続してその分
岐端子それぞれに搬送式インターホンを接続した
場合の、インターホン相互間の信号の減衰は逆結
合損失12dBと結合損失11dBを加算した23dBとな
り、相手の搬送式インターホンからの信号は、比
率で表わすと約14分の１の減衰で済む。 FIG. 4 shows a characteristic diagram of the branch circuit configured with the above numerical values, where A is the insertion loss and the output terminal 9 when a signal is input from the input terminal 8.
B is the coupling loss and the amount of signal loss at the branch terminal 10 when the signal is input from the input terminal 8. C is the reverse coupling loss at the branch terminal when the signal is input from the output terminal 9. 10 shows the amount of signal loss at 10. As shown in the figure, coupling loss occurs in the VHF band from 90 to 222MHz in the television frequency band.
10dB, reverse coupling loss 30-35dB, insertion loss 1dB, 470
In the UHF band ~770MHz, coupling loss is 11 dB, reverse coupling loss is 20 to 25 dB, insertion loss is 1.5 dB, and coupling loss is at 20 MHz, which is the frequency used by carrier intercoms.
Characteristics of 11 dB, reverse coupling loss of 12 dB, and insertion loss of 1.2 dB were obtained. In addition, when two of the above branchers are connected in series and a carrier intercom is connected to each branch terminal, the signal attenuation between the intercoms will be 23 dB, which is the sum of the reverse coupling loss of 12 dB and the coupling loss of 11 dB, The signal from the standard intercom only needs to be attenuated by a factor of about 14.
尚、第５図は本発明の分岐器の分岐端子１０に
周知の２分配器１５を接続し、テレビ受像機３と
搬送式インターホン４を独立して接続できるよう
に構成した回路を示す。 FIG. 5 shows a circuit in which a well-known two-way divider 15 is connected to the branch terminal 10 of the branch of the present invention, so that the television receiver 3 and the transport type intercom 4 can be connected independently.
第６図は第５図の分岐回路を用いた分岐器の共
同受信設備の配線図で、２個の分岐端子１１の一
方はテレビ受像機３のアンテナ端子に、また、他
の分岐端子１１は搬送式インターホン４の送受信
端子にそれぞれ給電線１７を介して接続する。 FIG. 6 is a wiring diagram of a joint reception facility using a branch circuit using the branch circuit shown in FIG. 5. One of the two branch terminals 11 is connected to the antenna terminal of the television receiver 3, and the other It is connected to the transmission and reception terminals of the transport type intercom 4 via power supply lines 17, respectively.
以上のように本発明のものは、テレビ放送の信
号においては方向性を持つようにしてあり、例え
ば搬送式インターホン等の任意に選ばれ定められ
る周波数帯の信号については双方向性を持つよう
にしてあるから、テレビ受像機の局部発振器から
漏洩するスプリアスが分岐端子から逆流して受信
設備後段へ流入することが防止でき、また前段分
岐器の分岐端子に接続されたテレビ受像機の画質
に悪影響を及ぼすこともなく、更に例えば搬送式
インターホン等の相互間の通信回線における損失
は著しく少なくなるので明瞭度の極めて高い通信
ができ、重要な通信内容を正確に伝えることがで
きるという効果を得ることができる。 As described above, in the present invention, TV broadcast signals have directional properties, and signals in arbitrarily selected and determined frequency bands such as carrier intercoms have bidirectional properties. This prevents spurious signals leaking from the TV receiver's local oscillator from flowing backwards through the branch terminals and into the later stages of the receiving equipment, and also prevents negative effects on the image quality of the TV receiver connected to the branch terminals of the front branch. Moreover, losses in mutual communication lines such as carrier intercoms are significantly reduced, so communication with extremely high clarity is possible, and important communication contents can be accurately conveyed. I can do it.
第１図は有線通信設備の配線図、第２図は分岐
器のシンボルマークを示す図、第３図は本発明の
回路図、第４図は本発明の分岐回路による特性図
第５図は本発明の異なる回路図、第６図は第５図
の分岐回路を用いた分岐器の共同受信設備の配線
図、第７図は第５図の分岐回路を用いた分岐器の
使用状態を示す図。
８……入力端子、９……出力端子、１０……分
岐端子、Ｔ１，Ｔ２……結合トランス、１１……
並列共振回路、１４……抵抗。
Fig. 1 is a wiring diagram of wired communication equipment, Fig. 2 is a diagram showing the symbol mark of a branch switch, Fig. 3 is a circuit diagram of the present invention, Fig. 4 is a characteristic diagram of the branch circuit of the present invention, and Fig. 5 is a diagram showing the symbol mark of a branch switch. Different circuit diagrams of the present invention, FIG. 6 is a wiring diagram of a joint reception facility of a branch using the branch circuit of FIG. 5, and FIG. 7 shows the usage status of the branch using the branch circuit of FIG. 5. figure. 8...Input terminal, 9...Output terminal, 10...Branch terminal, T1, T2...Coupling transformer, 11...
Parallel resonant circuit, 14...resistance.
Claims (1)
端子に、また他端を出力端子にそれぞれ接続し、
２次巻線の一端を分岐端子に接続し、他端を接地
すると共に第２の結合トランスの１次巻線の一端
を上記入力端子に接続し、他端を接地し、２次巻
線の１端は抵抗を介して接地すると共に、その他
端を並列共振回路を介して分岐端子へ接続したこ
とを特徴とする分岐器。1 Connect one end of the primary winding of the first coupling transformer to the input terminal and the other end to the output terminal,
One end of the secondary winding is connected to the branch terminal and the other end is grounded, and one end of the primary winding of the second coupling transformer is connected to the input terminal and the other end is grounded. A branching switch characterized in that one end is grounded via a resistor, and the other end is connected to a branch terminal via a parallel resonant circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1270080A JPS56110324A (en) | 1980-02-05 | 1980-02-05 | Branching device |
| DE3103605A DE3103605C2 (en) | 1980-02-05 | 1981-02-03 | Knock detector for use in an ignition timing device for a spark ignition internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1270080A JPS56110324A (en) | 1980-02-05 | 1980-02-05 | Branching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56110324A JPS56110324A (en) | 1981-09-01 |
| JPS6230532B2 true JPS6230532B2 (en) | 1987-07-02 |
Family
ID=11812660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1270080A Granted JPS56110324A (en) | 1980-02-05 | 1980-02-05 | Branching device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS56110324A (en) |
| DE (1) | DE3103605C2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6046269B2 (en) * | 1980-04-23 | 1985-10-15 | 三菱電機株式会社 | Internal combustion engine ignition timing control device |
| US4530328A (en) * | 1982-04-15 | 1985-07-23 | Mitsubishi Denki Kabushiki Kaisha | Ignition timing controller for internal combustion engine |
| FR2544802B1 (en) * | 1983-04-19 | 1988-07-22 | Mitsubishi Electric Corp | IGNITION ADJUSTMENT CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES |
| JPS6139684A (en) * | 1984-07-30 | 1986-02-25 | Maspro Denkoh Corp | Information outlet |
| JPS61293031A (en) * | 1985-06-20 | 1986-12-23 | Victor Co Of Japan Ltd | Bidirectional branching device |
| JPH0681923B2 (en) * | 1988-05-19 | 1994-10-19 | 三菱自動車工業株式会社 | Knock suppression device for internal combustion engine |
| US5144929A (en) * | 1990-10-02 | 1992-09-08 | Mitsubishi Denki Kabushiki Kaisha | Knock suppression apparatus and method for a multi-cylinder internal combusiton engine |
| JPH04143463A (en) * | 1990-10-04 | 1992-05-18 | Mitsubishi Electric Corp | Ignition device for internal combustion engine |
| US5188079A (en) * | 1991-03-20 | 1993-02-23 | Mitsubishi Denki Kabushiki Kaisha | Electronic control device for an internal combustion engine |
| JP3346438B2 (en) * | 1994-05-27 | 2002-11-18 | 株式会社ユニシアジェックス | Engine cylinder pressure detector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002155A (en) * | 1976-01-12 | 1977-01-11 | General Motors Corporation | Engine and engine spark timing control with knock limiting etc. |
| US4153020A (en) * | 1977-07-26 | 1979-05-08 | The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency | Method and apparatus for spark control of engine knock |
| JPS5813749B2 (en) * | 1978-04-28 | 1983-03-15 | 株式会社豊田中央研究所 | Knocking control device |
| US4282841A (en) * | 1978-06-27 | 1981-08-11 | Nissan Motor Company, Limited | Ignition timing control system for an internal combustion engine |
| GB2061380B (en) * | 1979-10-11 | 1983-11-02 | Nissan Motor | Knocking detector for controlling ignition timing of an internal combustion engine |
-
1980
- 1980-02-05 JP JP1270080A patent/JPS56110324A/en active Granted
-
1981
- 1981-02-03 DE DE3103605A patent/DE3103605C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56110324A (en) | 1981-09-01 |
| DE3103605C2 (en) | 1983-12-01 |
| DE3103605A1 (en) | 1982-01-14 |
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