JP2005051461A - Superposition transmission system of dc current, low-frequency signal, and high-frequency signal - Google Patents

Superposition transmission system of dc current, low-frequency signal, and high-frequency signal Download PDF

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JP2005051461A
JP2005051461A JP2003280609A JP2003280609A JP2005051461A JP 2005051461 A JP2005051461 A JP 2005051461A JP 2003280609 A JP2003280609 A JP 2003280609A JP 2003280609 A JP2003280609 A JP 2003280609A JP 2005051461 A JP2005051461 A JP 2005051461A
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frequency signal
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direct current
diat
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JP2005051461A5 (en
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Tomotoshi Ishikawa
智敏 石川
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Sony Corp
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<P>PROBLEM TO BE SOLVED: To transmit a DC current, a low-frequency signal, and a high-frequency signal by a single-conductor coaxial signal conductor. <P>SOLUTION: A transmitter superposes the high-frequency signal Hf on the DC current (DC) used at a receiver for transmitting. When the high-frequency signal is not required, the transmitter superposes the low-frequency signal Lf on the DC current (DC) by time sharing Lf1, Lf2 for transmitting. The receiver separates only the high-frequency signal without separating all signals. A circuit using the low-frequency signal Lf is devised so that the circuit operates without being affected by the DC current (DC), and the low-frequency signal Lf is used without separating from the DC current (DC). The (DC), Lf, and Hf can be transmitted by a single-conductor coaxial signal conductor. Additionally, only the high-frequency signal may be separated from the DC current, thus facilitating signal separation and making the single-conductor coaxial signal conductor advantageous in terms of products and costs. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、直流電流と低周波信号と高周波信号を１本のピンケーブルで送ることができる直流電流と低周波信号と高周波信号の重畳伝送方式に関するものである。   The present invention relates to a superimposed transmission system of a direct current, a low frequency signal, and a high frequency signal that can send a direct current, a low frequency signal, and a high frequency signal with a single pin cable.

従来、デジタル空間伝送システム（ＤＩＡＴ）を備えた家庭用ドルビサランドシステム（ホームシアタ）は、図７に示すように、ＣＤプレイヤなどオーディオ再生装置を有する本体１０からＤＩＡＴ送信部（転送部）２０Ａへピンケーブルなどの同軸信号線１５を用いて高周波数のデジタルオーディオ信号（（３〜６ＭＨｚ））及びＤＩＡＴ送信部２０Ａの電源用直流電流を伝送し、ＤＩＡＴ送信部２０Ａはこの直流電流で動作して伝送されるデジタルオーディオ信号を受信し、直流電流に重畳されているデジタルオーディオ信号を分離し、信号処理して赤外線でＤＩＡＴ信号を左（右）（Ｌ（Ｒ））のリアスピーカ装置４０Ｌ（Ｒ）側にあるＤＩＡＴ受信部３１Ｌ（Ｒ）に転送し、ＤＩＡＴ受信部３１Ｌ（Ｒ）はこのＤＩＡＴ信号を受信して音楽信号をリアスピーカ装置４０Ｌ（Ｒ）のアンプ４１Ｌ（Ｒ）に出力するように構成されている。   2. Description of the Related Art Conventionally, a home Dolvisaland system (home theater) equipped with a digital spatial transmission system (DIAT), as shown in FIG. 7, from a main body 10 having an audio playback device such as a CD player to a DIAT transmission unit (transfer unit) 20A. A coaxial audio signal line 15 such as a hepin cable is used to transmit a high-frequency digital audio signal ((3 to 6 MHz)) and a direct current for power supply of the DIAT transmission unit 20A. The DIAT transmission unit 20A operates with this direct current. The digital audio signal transmitted is received, the digital audio signal superimposed on the direct current is separated, signal processing is performed, and the DIAT signal is left (right) (L (R)) rear speaker device 40L (infrared). Transfer to the DIAT receiver 31L (R) on the R) side, and the DIAT receiver 31L (R) receives this DIAT signal. It is configured to output music signal to the amplifier 41L (R) of the rear speaker apparatus 40L (R).

ＤＩＡＴ受信部３１Ｌ（Ｒ）などワイヤレス機器の消費電力が大きいので、必要のないときには、その電源をオフしているのが望ましい。特に、ワイアレス機器をバッテリ機器とした場合は、必須である。またリアスピーカ装置のアンプ４１Ｌ（Ｒ）などに電源も必要のないときオフしているのが、必須である。   Since the power consumption of the wireless device such as the DIAT receiver 31L (R) is large, it is desirable to turn off the power supply when it is not necessary. In particular, it is essential when the wireless device is a battery device. Further, it is essential that the amplifier 41L (R) of the rear speaker device is turned off when no power is required.

従来、外部装置の省電力化のため、外部装置に対して電力供給開始、電力供給遮断等の処理を通して行なうことは、画像処理装置などで知られている（例えば、特許文献１参照）。
特開平８−１７４９６３号公報（図１）。 2. Description of the Related Art Conventionally, in order to save power of an external device, it is known in an image processing device or the like to perform through processing such as power supply start and power supply interruption to the external device (for example, see Patent Document 1).
JP-A-8-174963 (FIG. 1).

上記ＤＩＡＴ受信部やリアスピーカ装置のアンプの電源を赤外線リモコンで制御することを考える。その場合、赤外線リモコン送信部（リモコンＬＥＤ）をＤＩＡＴ送信部に設けることになる。しかし、ホームシアタの本体からＤＩＡＴ送信部に、電源用の直流電流、デジタルオーディオ信号、リモコン制御信号を送るための接続線に特殊なものや煩雑なものを使用することは、商品上、コスト上望ましくない。   Consider controlling the power source of the DIAT receiver and the amplifier of the rear speaker device with an infrared remote controller. In this case, an infrared remote control transmission unit (remote control LED) is provided in the DIAT transmission unit. However, using special or complicated connection lines for sending DC current, digital audio signals, and remote control signals for power supply from the home theater main unit to the DIAT transmission unit is difficult in terms of product and cost. Not desirable.

本発明は、このような課題に鑑みてなされたものであり、１本の１芯同軸信号線で、直流電流と低周波信号と高周波信号を送ることができる直流電流と低周波信号と高周波信号の重畳伝送方式を提供することを目的とする。   The present invention has been made in view of such a problem, and a direct current, a low frequency signal, and a high frequency signal that can send a direct current, a low frequency signal, and a high frequency signal with one single-core coaxial signal line. An object of the present invention is to provide a superposition transmission method.

本発明の直流電流と低周波信号と高周波信号の重畳伝送方式は、送信部から受信部へ直流電流と高周波信号および低周波信号を１本の1芯同軸信号線で送る伝送方式であって、前記送信部は高周波信号を前記直流電流に重畳して送り、前記低周波信号を前記受信部が前記高周波信号を必要としないときに時分割で前記直流電流に重畳して送り、前記受信部は、前記直流電流に重畳された高周波信号のみを分離し、低周波信号Ｌｆを用いる回路を直流電流（ＤＣ）の影響なく動作するように工夫し、低周波信号は直流電流と分離しないようにしたものである。   The superimposed transmission method of direct current, low frequency signal and high frequency signal of the present invention is a transmission method in which a direct current, a high frequency signal and a low frequency signal are transmitted from a transmission unit to a reception unit through one single-core coaxial signal line. The transmitting unit sends a high-frequency signal superimposed on the DC current, and sends the low-frequency signal superimposed on the DC current in a time-sharing manner when the receiving unit does not need the high-frequency signal. The high frequency signal superimposed on the direct current is separated, and the circuit using the low frequency signal Lf is devised to operate without the influence of the direct current (DC) so that the low frequency signal is not separated from the direct current. Is.

本発明は、送信部から受信部へ直流電流と高周波信号および低周波信号を１本の1芯同軸信号線で送る伝送方式であって、送信部は高周波信号を直流電流に重畳して送り、低周波信号を受信部が前記高周波信号を必要としないときに時分割で直流電流に重畳して送り、受信部は直流電流に重畳された高周波信号のみを分離する分離回路を有するものであるから、
（１）１本の1芯同軸信号線で直流電流と高周波信号および低周波信号を伝送できるので、伝送する接続線に特殊なものや煩雑なものを使用する必要がなく、商品上、コスト上有利である。
（２）受信部は高周波信号のみを分離すればよく、全ての信号を分離する高価な信号分離回路を必要としない。 The present invention is a transmission system for sending a direct current, a high-frequency signal and a low-frequency signal from a transmission unit to a reception unit through one single-core coaxial signal line, and the transmission unit sends the high-frequency signal superimposed on the direct current, Since the receiving unit superimposes the low frequency signal on the DC current in a time division manner when the receiving unit does not need the high frequency signal, the receiving unit has a separation circuit that separates only the high frequency signal superimposed on the DC current. ,
(1) Direct current, high-frequency signal, and low-frequency signal can be transmitted with one single-core coaxial signal line, so there is no need to use special or complicated connection lines for transmission. It is advantageous.
(2) The receiving unit need only separate high-frequency signals, and does not require an expensive signal separation circuit that separates all signals.

図１、図２に実施形態に係る家庭用ドルビサランドシステム（ホームシアタ）の概略構成図を示す。ホームシアタの本体１０とフロントスピーカ５０Ｌ、５０Ｃ、５０Ｒは直接が接続され、本体１０とリアスピーカ装置４０Ｌ、４０ＲはＤＩＡＴ・リモコン送信部２０とＤＩＡＴ受信部３１からなるデジタル光空間伝送システム（ＤＩＡＴ）によりが接続されている。本体１０の近くに設けられているＤＩＡＴ・リモコン送信部２０は、本体１０と１本のビデオ用ピンケーブル（１芯の同軸信号線）１５で接続されいる。また、リア側にはＤＩＡＴ受信部３１Ｌ（Ｒ）とリアスピーカ装置４０Ｌ（Ｒ）の電源を制御するリモコン受信部３２Ｌ（Ｒ）が設けられている。   FIG. 1 and FIG. 2 show a schematic configuration diagram of a household Dolby Land system (home theater) according to the embodiment. The home theater main body 10 and the front speakers 50L, 50C, 50R are directly connected, and the main body 10 and the rear speaker devices 40L, 40R are a digital optical space transmission system (DIAT) comprising a DIAT / remote control transmitter 20 and a DIAT receiver 31. Is connected. The DIAT / remote control transmitter 20 provided near the main body 10 is connected to the main body 10 by a single video pin cable (single-core coaxial signal line) 15. On the rear side, a DIAT receiver 31L (R) and a remote control receiver 32L (R) for controlling the power supply of the rear speaker device 40L (R) are provided.

本体１０は、図３に示すように、本体制御用リモコン（図示省略）のＤＩＡＴオンボタンの操作により動作するＣＤプレーヤなどオーディオ再生装置１１と、このオーディオ再生装置１１からのオーディオステレオＬ、Ｒの信号を高周波数帯（数ＭＨｚ以上）のＬ、Ｒデジタルオーディオ信号Ｈｆ１、Ｈｆ２（Ｈｆ）に変換するオーディオ信号処理部１２と、低周波数帯（数１００〜数１０ｋＨｚ）のリモコンオン信号又はリモコンオフ信号Ｌｆ（Ｌｆ１ｏｒＬｆ２）を出力するリモコン信号処理回路１３と、上記本体リモコンのＤＩＡＴオンボタンの操作によりオンし電源用直流電流（ＤＣ）を出力するトランジスタスイッチ（ＴｒＳＷ）と、本体１０に内蔵するマイコンの制御により、図４に示すタイミングで、電源用直流電流（ＤＣ）と、リモコン信号Ｌｆ及びデジタルオーディオ信号Ｈｆ１を重畳して同軸信号線１５へ送出するＭＩＸ（混合）部１４とにより構成されている。   As shown in FIG. 3, the main body 10 includes an audio playback device 11 such as a CD player that operates by operating a DIAT on button of a main body control remote controller (not shown), and audio stereo L, R from the audio playback device 11. Audio signal processing unit 12 for converting the signal into L and R digital audio signals Hf1 and Hf2 (Hf) in a high frequency band (several MHz or more), and a remote control on signal or remote control off in a low frequency band (several hundreds to several tens of kHz) A remote control signal processing circuit 13 that outputs a signal Lf (Lf1 or Lf2), a transistor switch (TrSW) that is turned on by operating a DIAT on button of the main body remote controller and outputs a direct current for power supply (DC), and a microcomputer built in the main body 10 With the control, the direct current for power supply (DC) at the timing shown in FIG. Is constituted by the MIX (mixing) section 14 to be transmitted to the coaxial signal line 15 by superimposing the remote control signal Lf and the digital audio signal Hf1.

ＤＩＡＴ・リモコン送信部２０は、図５に示すように、高周波信号分離回路２１と、この高周波信号分離回路２１で分離されたＬ、Ｒの高周波信号Ｈｆ１、Ｈｆ２をそれぞれ入力するＤＩＡＴ信号処理回路２２Ｌ（Ｒ）と、ＤＩＡＴＬＥＤ駆動回路２３Ｌ（Ｒ）及びリモコンＬＥＤ駆動回路２４Ｌ（Ｒ）から構成されている。これら回路は同軸信号線１５の直流電流（ＤＣ）を電源として動作するようにインダクタンス１６を介して同軸信号線１５に接続されている。   As shown in FIG. 5, the DIAT / remote control transmitter 20 receives a high-frequency signal separation circuit 21 and a DIAT signal processing circuit 22L for inputting the L and R high-frequency signals Hf1 and Hf2 separated by the high-frequency signal separation circuit 21, respectively. (R), a DIATLED drive circuit 23L (R), and a remote control LED drive circuit 24L (R). These circuits are connected to the coaxial signal line 15 via the inductance 16 so as to operate using the direct current (DC) of the coaxial signal line 15 as a power source.

高周波分離回路２１は、伝送されてきた直流電流（ＤＣ）、リモコン信号Ｌｆデジタルオーディオ信号Ｈｆから、Ｌ、Ｒのデジタルオーディオ信号Ｈｆ１、Ｈｆ２を分離する２つのＢＰＦ（バンドパスフィルタ）などで構成されている。   The high-frequency separation circuit 21 includes two BPFs (band pass filters) that separate the L and R digital audio signals Hf1 and Hf2 from the transmitted direct current (DC) and the remote control signal Lf digital audio signal Hf. ing.

ＤＩＡＴ信号処理回路２２Ｌ（Ｒ）は分離されたデジタルオーディオ信号ＨｆをＤＩＡＴ信号処理してＬ（Ｒ）のＤＩＡＴ信号を出力するように構成されている。ＤＩＡＴＬＥＤ駆動回路２３Ｌ（Ｒ）はそれぞれＬ（Ｒ）のＤＩＡＴ信号でＬＥＤを駆動し、Ｌ（Ｒ）の赤外線のＤＩＡＴ信号Ｈｆを出力するように構成されている。また、リモコンＬＥＤ駆動回路２４Ｌ（Ｒ）は、直流電流（ＤＣ）に重畳されたリモコン信号Ｌｆ１又はＬｆ２でＬＥＤを駆動して赤外線のリモコンオン信号Ｌｆ１又はリモコンオン信号Ｌｆ２を出力するように構成されている。   The DIAT signal processing circuit 22L (R) is configured to perform DIAT signal processing on the separated digital audio signal Hf and output an L (R) DIAT signal. Each of the DIATLED drive circuits 23L (R) is configured to drive an LED with an L (R) DIAT signal and to output an L (R) infrared DIAT signal Hf. The remote control LED drive circuit 24L (R) is configured to drive the LED with a remote control signal Lf1 or Lf2 superimposed on a direct current (DC) and output an infrared remote control on signal Lf1 or a remote control on signal Lf2. ing.

リヤスピーカ装置側に設けられるＤＩＡＴ受信部（受光部）３１Ｌ（Ｒ）は、図６に示すように、バッテリーＢを電源とし、電源スイッチＳＷ１のオンで動作可能となり、赤外線ＤＩＡＴ信号ＨｆＬ（Ｒ）が入力するとＬ（Ｒ）の音声信号をリヤスピーカ装置４０Ｌ（Ｒ）のアンプ４１Ｌ（Ｒ）に出力するように構成されている。また、アンプ４１Ｌ（Ｒ）もバッテリーＢを電源とし、電源スイッチＳＷ２のオンで動作可能となるようにしてある。   As shown in FIG. 6, the DIAT receiving unit (light receiving unit) 31L (R) provided on the rear speaker device side can be operated with the battery B as a power source and the power switch SW1 is turned on, and the infrared DIAT signal HfL (R). Is input, the L (R) audio signal is output to the amplifier 41L (R) of the rear speaker device 40L (R). The amplifier 41L (R) is also configured to be operable by turning on the power switch SW2 with the battery B as a power source.

リモコン受光部３２Ｌ（Ｒ）は、赤外線リモコンオン信号Ｌｆ１が入力すると、オン制御信号ＳONをＤＩＡＴ受信部３１Ｌ（Ｒ）の電源スイッチＳＷ１及びアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ２へ出力する。また、赤外線リモコンオフ信号Ｌｆ２が入力すると、オフ制御信号Ｓ0FFをＤＩＡＴ受信部３１Ｌ（Ｒ）の電源スイッチＳＷ１及びアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ２へ出力するように構成されている。 When the infrared remote controller ON signal Lf1 is input, the remote controller light receiving unit 32L (R) outputs the ON control signal S ON to the power switch SW1 of the DIAT receiver 31L (R) and the power switch SW2 of the amplifier 41L (R). When the infrared remote control off signal Lf2 is input, the off control signal S 0FF is output to the power switch SW1 of the DIAT receiver 31L (R) and the power switch SW2 of the amplifier 41L (R).

赤外線リモコンの消費電力は極めて小さいので、赤外線リモコンの電源（図示省略）は常時オンにしてある。   Since the power consumption of the infrared remote control is extremely small, the power supply (not shown) of the infrared remote control is always on.

次に図４を参照して、上記本体１０から１本の同軸信号線１５を用いて伝送する直流電流（ＤＣ）、デジタルオーディオ信号Ｈｆ、リモコンオン信号Ｌｆのタイミング及びＤＩＡＴ機器やリモコンの動作などについて説明する。
（ａ）ＤＩＡＴオフ時は、伝送機能が停止状態にあるので、本体１０から直流電流（ＤＣ）の伝送がなく、ＤＩＡＴ・リモコン送信部２０（図５）は動作停止状態になっている。また、ＤＩＡＴ受信部３１Ｌ（Ｒ）の電源スイッチＳＷ１及びアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ２は共にオフになっている（図６）。
（ｂ）本体リモコンのＤＩＡＴオンボタンがオンされると、本体内のマイコンの制御により、ＤＩＡＴオン時に先立って本体のＭＩＸ回路１４から直流電流（ＤＣ）及びこれに重畳されたリモコンオン信号Ｌｆ１が伝送される。ＤＩＡＴ・リモコン送信部２０の各回路はこの直流電流（ＤＣ）によりが動作可能になる（図５）。直流電流（ＤＣ）に重畳されたリモコンオン信号Ｌｆ１は、赤外線リモコンＬＥＤ駆動回路２４Ｌ（Ｒ）に入力し赤外線リモコンオン信号として常時電源オンとなっているリモコン受光部３２Ｌ（Ｒ）に転送され（図５）、リモコン受光部３２Ｌ（Ｒ）が電源スイッチオンのオン制御信号Ｓ0Nを出力し、ＤＩＡＴ受信部３１Ｌ（Ｒ）の電源スイッチＳＷ１及びアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ２をオンさせる（図６）。これによりＤＩＡＴ受信部３１Ｌ（Ｒ）及びアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ１、ＳＷ２はオンとなり、ＤＩＡＴ受信部３１Ｌ（Ｒ）及びアンプ４１Ｌ（Ｒ）は動作可能な状態となる。
（ｃ）次いで、マイコンの制御によりＤＩＡＴオン時前にリモコンオン信号Ｌｆ１の伝送が停止され、直流電流のみの伝送となる。
（ｄ）ＤＩＡＴオン時になると、デジタルオーディオ信号Ｈｆ（Ｈｆ１、Ｈｆ２）が直流電圧（ＤＣ）に重畳されて伝送される。このときデジタルオーディオ信号Ｈｆは高周波のため信号電圧を低くして伝送する。デジタルオーディオ信号Ｈｆ（Ｈｆ１、Ｈｆ２）はＤＩＡＴ・リモコン送信部２０の信号分離回路２１で直流電流（ＤＣ）から分離され、ＤＩＡＴ信号処理部２２Ｌ（Ｒ）を介してＤＩＡＴＬＥＤ駆動回路２３Ｌ（Ｒ）から赤外線ＤＩＡＴ信号ＨｆＬ（Ｒ）としてＤＩＡＴ受信部３１Ｌ（Ｒ）に転送され、ＤＩＡＴ受信部３１Ｌ（Ｒ）からオーデオ信号がリアスピーカ装置４０Ｌ（Ｒ）のアンプ４１Ｌ（Ｒ）に入力し、リヤスピーカ４２Ｌ、４２Ｒから音楽が流れる。
（ｅ）デジタルオーディオ信号Ｈｆの伝送が終わると、直流電流（ＤＣ）の伝送のみとなる。
（ｆ）間もなくマイコンの制御によりモコンオフ信号Ｌｆ２が直流電流（ＤＣ）に重畳されて伝送され、赤外線リモコンＬＥＤ駆動回路２４Ｌ（Ｒ）に入力し、Ｌ（Ｒ）の赤外線リモコンオフ信号として常時電源オンしている赤外線リモコン受光部３２Ｌ（Ｒ）に転送され、リモコン受光部３２Ｌ（Ｒ）がオフ制御信号ＳOFFを出力し、ＤＩＡＴ受信部３１Ｌ（Ｒ）とアンプ４１Ｌ（Ｒ）の電源スイッチＳＷ１、ＳＷ２をオフにする。マイコンの制御によりリモコンオフ信号Ｌｆ２及び直流電流（ＤＣ）の伝送は停止される。
（ｇ）全ての伝送が終わりＤＩＡＴオフ時の状態に戻る。 Next, referring to FIG. 4, the direct current (DC) transmitted from the main body 10 using one coaxial signal line 15, the timing of the digital audio signal Hf, the remote control on signal Lf, the operation of the DIAT device and the remote control, etc. Will be described.
(A) Since the transmission function is in a stopped state when DIAT is off, there is no transmission of direct current (DC) from the main body 10, and the DIAT / remote control transmitter 20 (FIG. 5) is in an operation stopped state. Further, the power switch SW1 of the DIAT receiver 31L (R) and the power switch SW2 of the amplifier 41L (R) are both turned off (FIG. 6).
(B) When the DIAT on button of the main body remote control is turned on, the direct current (DC) and the remote control on signal Lf1 superimposed on it from the MIX circuit 14 of the main body are controlled by the microcomputer in the main body before the DIAT is turned on. Is transmitted. Each circuit of the DIAT / remote control transmitter 20 can be operated by this direct current (DC) (FIG. 5). The remote control on signal Lf1 superimposed on the direct current (DC) is input to the infrared remote control LED drive circuit 24L (R) and transferred to the remote control light receiving unit 32L (R) that is always on as an infrared remote control on signal ( 5), the remote control light receiving unit 32L (R) outputs a power switch ON control signal S 0N to turn on the power switch SW1 of the DIAT receiver 31L (R) and the power switch SW2 of the amplifier 41L (R) ( FIG. 6). As a result, the power switches SW1 and SW2 of the DIAT receiver 31L (R) and the amplifier 41L (R) are turned on, and the DIAT receiver 31L (R) and the amplifier 41L (R) become operable.
(C) Next, under the control of the microcomputer, the transmission of the remote control on signal Lf1 is stopped before the DIAT is turned on, and only the direct current is transmitted.
(D) When DIAT is turned on, the digital audio signal Hf (Hf1, Hf2) is superimposed on the direct current voltage (DC) and transmitted. At this time, the digital audio signal Hf is transmitted at a low signal voltage because of its high frequency. The digital audio signal Hf (Hf1, Hf2) is separated from the direct current (DC) by the signal separation circuit 21 of the DIAT / remote control transmitter 20, and from the DIATLED drive circuit 23L (R) via the DIAT signal processor 22L (R). The infrared signal is transferred to the DIAT receiver 31L (R) as the infrared DIAT signal HfL (R), and the audio signal is input from the DIAT receiver 31L (R) to the amplifier 41L (R) of the rear speaker device 40L (R), and the rear speaker 42L. Music flows from 42R.
(E) When the transmission of the digital audio signal Hf is completed, only the direct current (DC) is transmitted.
(F) Soon, the microcomputer control signal Lf2 is transmitted by being superimposed on the direct current (DC) under the control of the microcomputer, input to the infrared remote control LED drive circuit 24L (R), and always powered on as the infrared remote control off signal of L (R) to have been transferred to the infrared remote sensor 32L (R), the remote receiver 32L (R) outputs an oFF control signal S oFF, the power switch SW1 of DIAT receiver 31L (R) and the amplifier 41L (R), Turn off SW2. Transmission of the remote control off signal Lf2 and the direct current (DC) is stopped under the control of the microcomputer.
(G) All transmissions are completed and the state returns to the state when DIAT is off.

上記では、１本の同軸信号線を用いて直流電流（電源）、低周波信号（リモコン制御信号）、高周波信号（ＤＩＡＴ信号）を伝送している。この伝送は、直流電流に高周波信号を重畳し、低周波信号は高周波信号と重ならないように直流電圧（又は直流電流）と分離せずに時分割で送っているので、高周波の分離が容易である。また、リモコンＬＥＤ駆動回路は直流電流に重畳された低周波信号を受けて低周波の赤外線信号が出力するように構成されているので、直流電流、低周波信号、高周波信号を全て分離する信号分離回路を必要としない。また、上記実施の形態は、本発明をホームシアタに適用した例であるが、本発明は、これに限定されるものではない。   In the above, a direct current (power supply), a low frequency signal (remote control signal), and a high frequency signal (DIAT signal) are transmitted using one coaxial signal line. In this transmission, high frequency signals are superimposed on direct current, and low frequency signals are sent in time division without being separated from direct current voltage (or direct current) so that they do not overlap with high frequency signals. is there. In addition, the remote control LED drive circuit is configured to receive a low frequency signal superimposed on a DC current and output a low frequency infrared signal, so signal separation that separates all DC current, low frequency signal, and high frequency signal. Does not require a circuit. Moreover, although the said embodiment is an example which applied this invention to the home theater, this invention is not limited to this.

実施の形態に係る家庭用ドルビサランドシステムの構成説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 同システムにおけるデジタル空間伝送システムのブロック図。The block diagram of the digital space transmission system in the same system. 家庭用ドルビサランドシステム本体の概略構成を示すブロック図。1 is a block diagram showing a schematic configuration of a home Dolvisa Land system main body. 信号伝送ラインのタイミング図。The timing diagram of a signal transmission line. ＤＩＡＴ・リモコン信号送信部のブロック図。The block diagram of a DIAT and remote control signal transmission part. ＤＩＡＴ・リモコン受光部側回路ブロック図。DIAT / remote control light receiving unit side circuit block diagram. 従来例に係る家庭用ドルビサランドシステムの構成説明図。Structure explanatory drawing of the household Dolby land system concerning a prior art example.

符号の説明Explanation of symbols

１０…家庭用ドルビサランドシステム（ホームシアタ）の本体
１１…オーディオ再生装置
１２…オーディオ信号処理回路
１３…リモコン信号処理回路
１４…マイコン制御による信号ＭＩＸ回路
２０…ＤＩＡＴ・リモコン送信部
２０Ａ…ＤＩＡＴ送信部
２１…高周波信号分離回路
２２…ＤＩＡＴ信号処理部
２３…ＤＩＡＴＬＥＤ駆動回路
３１…リモコンＬＥＤ駆動回路
３２…ＤＩＡＴ受信部（受光部）
４０…リヤスピーカ装置 ４１…アンプ ４２…スピーカ
５０…フロントスピーカ装置
DESCRIPTION OF SYMBOLS 10 ... Main body of a domestic Dolvisaland system (home theater) 11 ... Audio reproduction apparatus 12 ... Audio signal processing circuit 13 ... Remote control signal processing circuit 14 ... Signal MIX circuit by microcomputer control 20 ... DIAT / remote control transmission unit 20A ... DIAT transmission Unit 21... High-frequency signal separation circuit 22... DIAT signal processing unit 23... DIATLED drive circuit 31.
40 ... Rear speaker device 41 ... Amplifier 42 ... Speaker 50 ... Front speaker device

Claims (2)

送信部から受信部へ直流電流と高周波信号および低周波信号を１本の1芯同軸信号線で送る伝送方式であって、
前記送信部は高周波信号を前記直流電流に重畳して送り、前記低周波信号を前記受信部が前記高周波信号を必要としないときに時分割で前記直流電流に重畳して送り、
前記受信部は、前記直流電流に重畳された高周波信号のみを分離する分離回路を有することを特徴とする直流電流と低周波信号と高周波信号の重畳伝送方式。 A transmission system that sends a direct current, a high-frequency signal, and a low-frequency signal from a transmitter to a receiver through a single single-core coaxial signal line.
The transmitting unit sends a high frequency signal superimposed on the direct current, and sends the low frequency signal superimposed on the direct current in a time division manner when the receiving unit does not need the high frequency signal,
The receiving unit includes a separation circuit that separates only a high-frequency signal superimposed on the direct current, wherein the direct current, the low-frequency signal, and the high-frequency signal are superimposed and transmitted. 請求項１において、
前記送信部は赤外線で音声信号を転送するデジタル光空間伝送システムを備えた家庭用ドルビサランドシステムの本体の送信部であり、前記受信部はデジタル光空間伝送システムの転送部であり、
前記直流電流は前記デジタル光空間伝送システムの転送部への電源電流であり、前記高周波信号はデジタルオーディオ信号であり、前記低周波信号はリモコン信号であることを特徴とする直流電流と低周波信号と高周波信号の重畳伝送方式。
In claim 1,
The transmission unit is a transmission unit of a main body of a domestic Dolby land system equipped with a digital optical space transmission system that transfers an audio signal by infrared rays, and the reception unit is a transfer unit of the digital optical space transmission system,
The direct current is a power supply current to a transfer unit of the digital optical space transmission system, the high frequency signal is a digital audio signal, and the low frequency signal is a remote control signal. And high-frequency signal superposition transmission system.
JP2003280609A 2003-07-28 2003-07-28 Superposition transmission system of dc current, low-frequency signal, and high-frequency signal Pending JP2005051461A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011151591A (en) * 2010-01-21 2011-08-04 Nec Corp Transmission circuit and signal transmission method
US8010870B2 (en) 2005-04-25 2011-08-30 Sony Corporation Coding apparatus and coding method
CN105390091A (en) * 2015-11-04 2016-03-09 深圳市绿源半导体技术有限公司 LED display enabling signal control system, LED display system and display driving method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8010870B2 (en) 2005-04-25 2011-08-30 Sony Corporation Coding apparatus and coding method
JP2011151591A (en) * 2010-01-21 2011-08-04 Nec Corp Transmission circuit and signal transmission method
CN105390091A (en) * 2015-11-04 2016-03-09 深圳市绿源半导体技术有限公司 LED display enabling signal control system, LED display system and display driving method

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