JP2003087064A5 - - Google Patents
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- JP2003087064A5 JP2003087064A5 JP2001279143A JP2001279143A JP2003087064A5 JP 2003087064 A5 JP2003087064 A5 JP 2003087064A5 JP 2001279143 A JP2001279143 A JP 2001279143A JP 2001279143 A JP2001279143 A JP 2001279143A JP 2003087064 A5 JP2003087064 A5 JP 2003087064A5
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Description
【発明の名称】信号出力装置及びステレオ装置 Patent application title: Signal output device and stereo device
【０００１】
【発明の属する技術分野】
本発明は、オーディオ信号を出力する信号出力装置及びステレオ装置に関するものである。[0001]
Field of the Invention
The present invention relates to a signal output device and a stereo device for outputting an audio signal.
【０００７】
本発明は、上記の問題点に鑑み、電源電圧の変動の影響を受けない信号出力装置及びステレオ装置を提供することを第一の目的とする。[0007]
SUMMARY OF THE INVENTION In view of the above problems, it is a first object of the present invention to provide a signal output device and a stereo device which are not affected by fluctuations in power supply voltage.
【００１１】
本発明は、上記の問題点に鑑み、３端子ヘッドホンと接続しても破損しない２チャネルのステレオタイプ出力をする平衡出力型信号出力装置を提供することを第二の目的とする。[0011]
In view of the above problems, it is a second object of the present invention to provide a balanced output type signal output device that produces a two-channel stereotype output that is not damaged even when connected to a three-terminal headphone.
【００１２】
【課題を解決するための手段】
上記第一の目的を達成するために、本発明に係る信号出力装置においては、入力信号を非反転増幅して出力する正相増幅手段及び入力信号を反転増幅して出力する逆相増幅手段からなる一対の増幅手段と、前記正相増幅手段の出力側に接続される第１の出力端子と、前記逆相増幅手段の出力側に接続される第２の出力端子と、を備え、前記増幅手段に入力する入力信号として２値量子化信号を用いる。また、上記第一の目的を達成するために、本発明に係る信号出力装置又はステレオ装置においては、入力信号を非反転増幅して出力する第１の正相増幅手段及び入力信号を反転増幅して出力する第１の逆相増幅手段からなる一対の第１の増幅手段と、入力信号を非反転増幅して出力する第２の正相増幅手段及び入力信号を反転増幅して出力する第２の逆相増幅手段からなる一対の第２の増幅手段と、前記第１の正相増幅手段の出力側に接続される第１の正相出力端子と、前記第２の正相増幅手段の出力側に接続される第２の正相出力端子と、前記第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、前記第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、
４端子プラグと、前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗と、前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗とを有する音声出力手段が接続されたときに、
前記第１の正相出力端子と前記４端子プラグの第１の端子とが接続され、前記第２の正相出力端子と前記４端子プラグの第２の端子とが接続され、前記第１の逆相出力端子と前記４端子プラグの第３の端子とが接続され、前記第２の逆相出力端子と前記４端子プラグの第４の端子とが接続され、前記第１の入力信号を増幅した電圧を前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗の両端に出力し、前記第２の入力信号を増幅した電圧を前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗の両端に出力する。 [0012]
[Means for Solving the Problems]
To achieve the above first object, in the signal output apparatus according to the present invention, a positive phase amplification means and the input signal to output an input signal non-inverting amplifier to the negative phase amplification means for inversely amplifies the output A pair of amplifying means , a first output terminal connected to the output side of the positive phase amplification means, and a second output terminal connected to the output side of the negative phase amplification means, the amplification A binary quantization signal is used as an input signal input to the means . Further, in order to achieve the above first object, in the signal output apparatus or stereo apparatus according to the present invention, the first positive phase amplification means for inverting and amplifying the input signal and invertingly amplifying the input signal , And a second positive phase amplification means for non-inverting amplification of an input signal and outputting the same; and second output means for inverting and amplifying the input signal A pair of second amplification means comprising reverse phase amplification means, a first positive phase output terminal connected to the output side of the first positive phase amplification means, and an output of the second positive phase amplification means A second positive phase output terminal connected to the output side, a first negative phase output terminal connected to the output side of the first negative phase amplification means, and an output side of the second negative phase amplification means And a second negative phase output terminal connected, wherein the first positive phase amplification means and the first negative phase amplification are provided. Stage receives the first input signal, the second positive phase amplification means and said second opposite phase amplifying means inputs a second input signal,
A 4-terminal plug, a resistor provided between a first terminal and a third terminal of the 4-terminal plug, and a resistor provided between a second terminal and a fourth terminal of the 3-terminal plug When an audio output means having
The first positive phase output terminal is connected to the first terminal of the four-terminal plug, the second positive phase output terminal is connected to the second terminal of the four-terminal plug, and the first The negative phase output terminal and the third terminal of the four-terminal plug are connected, the second negative phase output terminal and the fourth terminal of the four-terminal plug are connected, and the first input signal is amplified Output voltage across the resistor provided between the first terminal and the third terminal of the four-terminal plug, and the voltage obtained by amplifying the second input signal as the second terminal of the three-terminal plug It outputs to the both ends of the resistance provided between the and the 4th terminal.
【００１３】
上記第二の目的を達成するために、本発明に係る信号出力装置においては、入力信号を非反転増幅して出力する第１の正相増幅手段及び第２の正相増幅手段と、入力信号を反転増幅して出力する第１の逆相増幅手段及び第２の逆相増幅手段と、前記第１の正相増幅手段の出力側に接続される第１の正相出力端子と、前記第２の正相増幅手段の出力側に接続される第２の正相出力端子と、前記第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、前記第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、前記第１の正相増幅手段と前記第１の正相出力端子とが第１の抵抗を介して接続され、前記第２の正相増幅手段と前記第２の正相出力端子とが第２の抵抗を介して接続されるようにする。または、入力信号を非反転増幅して出力する第１の正相増幅手段及び第２の正相増幅手段と、入力信号を反転増幅して出力する第１の逆相増幅手段及び第２の逆相増幅手段と、前記第１の正相増幅手段の出力側に接続される第１の正相出力端子と、前記第２の正相増幅手段の出力側に接続される第２の正相出力端子と、前記第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、前記第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、前記第１の逆相増幅手段と前記第１の逆相出力端子とが第１の抵抗を介して接続され、前記第２の逆相増幅手段と前記第２の逆相出力端子とが第２の抵抗を介して接続されるようにする。[0013]
In order to achieve the above second object, in a signal output device according to the present invention, a first positive phase amplification means and a second positive phase amplification means for non-inverting amplifying an input signal and outputting the same, and an input signal A first negative phase amplification means and a second negative phase amplification means for inverting and amplifying and outputting the first positive phase output terminal connected to the output side of the first positive phase amplification means; A second positive phase output terminal connected to the output side of the positive phase amplification means of No. 2; a first negative phase output terminal connected to the output side of the first negative phase amplification means; A second negative phase output terminal connected to the output side of the negative phase amplification means, wherein the first positive phase amplification means and the first negative phase amplification means receive the first input signal; The second positive phase amplification means and the second negative phase amplification means receive a second input signal, and the first positive phase amplification means and the first positive phase amplification means An output terminal connected via a first resistor, so that said second positive-phase amplifier means and said second positive-phase output terminal is connected via a second resistor. Alternatively, a first positive phase amplification means and a second positive phase amplification means that non-inverts and amplifies an input signal and a first reverse phase amplification means and a second reverse phase that inverts and amplifies the input signal and outputs A phase amplification means, a first positive phase output terminal connected to the output side of the first positive phase amplification means, and a second positive phase output connected to the output side of the second positive phase amplification means A terminal, a first negative phase output terminal connected to the output side of the first negative phase amplification means, and a second negative phase output terminal connected to the output side of the second negative phase amplification means , And the first positive phase amplification means and the first negative phase amplification means receive the first input signal, and the second positive phase amplification means and the second negative phase amplification means are 2 input signals, the first negative-phase amplification means and the first negative-phase output terminal are connected via a first resistor, and the second negative-phase amplification is performed Said the stage second negative-phase output terminal is to be connected via a second resistor.
【００２１】
このような構成である第一実施形態のディジタルアンプの動作について説明する。アナログオーディオ信号Ｓ２は、デルタシグマ変調回路１３によって２値量子化信号に変換される。また、１６ビットディジタル信号は、補間回路１４によって例えば、元のサンプリング周波数のＮ倍のサンプリング周波数の３２ビットディジタル信号に変換される。その３２ビットディジタル信号は、デルタシグマ変調回路１５によって２値量子化信号に変換される。したがって、スイッチ回路１６の端子１６ａ、１６ｂ、及び１６ｃに入力される信号はいずれも２値量子化信号である。[0021]
The operation of the digital amplifier according to the first embodiment having such a configuration will be described. The analog audio signal S2 is converted by the delta sigma modulation circuit 13 into a binary quantized signal. Also, the 16-bit digital signal is converted by the interpolation circuit 14 into, for example, a 32-bit digital signal having a sampling frequency N times the original sampling frequency. The 32-bit digital signal is converted into a binary quantization signal by the delta sigma modulation circuit 15. Therefore, the signals input to the terminals 16a, 16b and 16c of the switch circuit 16 are all binary quantization signals.
【００５８】
【発明の効果】
本発明によると、入力信号を非反転増幅して出力する正相増幅手段及び入力信号を反転増幅して出力する逆相増幅手段からなる一対の増幅手段と、正相増幅手段の出力側に接続される第１の出力端子と、逆相増幅手段の出力側に接続される第２の出力端子と、を備え、前記増幅手段に入力する信号として２値量子化信号を用いるので、第１の出力端子と第２の出力端子との間の電圧である出力オーディオ信号が電源電圧の影響を受けないディジタル信号出力装置を実現することができる。これにより、良好な音質を得ることができる。また、このディジタル信号出力装置とオーディオ機器に設けられる他のディジタル回路とからなる集積回路の製造が容易になり、オーディオ機器の低コスト化を図ることができる。また、本発明に係る信号出力装置又はステレオ装置によると、入力信号を非反転増幅して出力する第１の正相増幅手段及び入力信号を反転増幅して出力する第１の逆相増幅手段からなる一対の第１の増幅手段と、入力信号を非反転増幅して出力する第２の正相増幅手段及び入力信号を反転増幅して出力する第２の逆相増幅手段からなる一対の第２の増幅手段と、前記第１の正相増幅手段の出力側に接続される第１の正相出力端子と、前記第２の正相増幅手段の出力側に接続される第２の正相出力端子と、前記第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、前記第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、４端子プラグと、前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗と、前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗とを有する音声出力手段が接続されたときに、前記第１の正相出力端子と前記４端子プラグの第１の端子とが接続され、前記第２の正相出力端子と前記４端子プラグの第２の端子とが接続され、前記第１の逆相出力端子と前記４端子プラグの第３の端子とが接続され、前記第２の逆相出力端子と前記４端子プラグの第４の端子とが接続され、前記第１の入力信号を増幅した電圧を前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗の両端に出力し、前 記第２の入力信号を増幅した電圧を前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗の両端に出力するので、上記効果を奏するとともに２チャンネルのステレオ出力が可能となる。 [0058]
【Effect of the invention】
According to the present invention, a pair of amplifying means comprising positive phase amplifying means for non-inverting amplifying and outputting an input signal and negative phase amplifying means for inverting and amplifying the input signal and connected to the output side of the positive phase amplifying means And a second output terminal connected to the output side of the negative phase amplification means, and a binary quantization signal is used as a signal to be input to the amplification means . It is possible to realize a digital signal output device in which the output audio signal, which is the voltage between the output terminal and the second output terminal, is not affected by the power supply voltage. Thereby, good sound quality can be obtained. In addition, the integrated circuit composed of the digital signal output device and other digital circuits provided in the audio device can be easily manufactured, and the cost of the audio device can be reduced. Further , according to the signal output device or the stereo device according to the present invention, the first positive phase amplification means for inverting and amplifying the input signal and outputting the same, and the first negative phase amplification means for inverting and amplifying the input signal and outputting A second pair of first amplification means, a second positive phase amplification means for non-inverting amplification of the input signal and outputting the same, and a second anti-phase amplification means for inverting and amplifying the input signal and outputting the second signal , Positive first phase output terminal connected to the output side of the first positive phase amplification means, and second positive phase output connected to the output side of the second positive phase amplification means A terminal, a first negative phase output terminal connected to the output side of the first negative phase amplification means, and a second negative phase output terminal connected to the output side of the second negative phase amplification means , And the first positive phase amplification means and the first negative phase amplification means receive a first input signal, The second positive phase amplification means and the second positive phase amplification means are provided between the first terminal and the third terminal of the 4-terminal plug and the 4-terminal plug; The first positive phase output terminal and the four terminal plug are connected when an audio output means having a resistor and a resistor provided between the second terminal and the fourth terminal of the three terminal plug is connected. And the second positive phase output terminal and the second terminal of the four terminal plug are connected, and the first negative phase output terminal and the third terminal of the four terminal plug are connected. Terminals are connected, the second negative phase output terminal is connected to the fourth terminal of the four-terminal plug, and a voltage obtained by amplifying the first input signal is transmitted to the first terminal of the four-terminal plug. output across the resistor provided between the third terminal, the previous SL voltage obtained by amplifying the second input signal Since the output across the resistor provided between the second terminal and the fourth terminal of the serial three-terminal plug, stereo output of two channels is possible it is possible to obtain the above effect.
【００５９】
また、本発明によると、第１の正相増幅手段及び第２の正相増幅手段と、第１の逆相増幅手段及び第２の逆相増幅手段と、第１の正相増幅手段の出力側に接続される第１の正相出力端子と、第２の正相増幅手段の出力側に接続される第２の正相出力端子と、第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、第１の正相増幅手段及び第１の逆相増幅手段が第１の入力信号を入力し、第２の正相増幅手段及び第２の逆相増幅手段が第２の入力信号を入力し、第１の正相増幅手段と第１の正相出力端子とが第１の抵抗を介して接続され、第２の正相増幅手段と第２の正相出力端子とが第２の抵抗を介して接続されるので、第１の正相出力端子と第１の逆相出力端子がヘッドホンのボイス・コイルを介して接続されると第１の正相出力端子の電位を第１の正相増幅手段の出力信号と第１の逆相増幅手段の出力信号との中間レベル付近にすることができ、第２の正相出力端子と第２の逆相出力端子がヘッドホンのボイス・コイルを介して接続されると第２の正相出力端子の電位を第２の正相増幅手段の出力信号と第２の逆相増幅手段の出力信号との中間レベル付近にすることができる。これにより、３端子ヘッドホンが接続されることによって第１の正相出力端子と第２の正相出力端子とが接続されても、第１の正相出力端子と第２の正相出力端子との電位差を小さくすることができる。したがって、信号出力装置の破損を防ぐことができ、クロストークを小さくすることができる。また、第１の抵抗及び第２の抵抗の抵抗値がそれぞれ接続されるヘッドホンのボイス・コイルの抵抗成分の抵抗値と一致する場合には、クロストークの発生を防ぐことができる。[0059]
Further, according to the present invention, the first positive phase amplification means and the second positive phase amplification means, the first negative phase amplification means and the second negative phase amplification means, and the output of the first positive phase amplification means And a second positive phase output terminal connected to the output side of the second positive phase amplification means, and a second positive phase output terminal connected to the output side of the first negative phase amplification means. A first negative-phase output terminal and a second negative-phase output terminal connected to the output side of the second negative-phase amplifier, and the first positive-phase amplifier and the first negative-phase amplifier The means receives a first input signal, the second positive phase amplification means and the second negative phase amplification means receive a second input signal, and the first positive phase amplification means and the first positive phase output The first positive phase output terminal and the second positive phase output terminal are connected to each other via the first resistor, and the second positive phase amplification means and the second positive phase output terminal are connected to each other via the second resistor. First negative phase When the power terminal is connected through the voice coil of the headphone, the potential of the first positive phase output terminal is set to an intermediate level between the output signal of the first positive phase amplification means and the output signal of the first negative phase amplification means When the second positive phase output terminal and the second negative phase output terminal are connected via the voice coil of the headphone, the potential of the second positive phase output terminal is set to the second positive phase. It can be near the intermediate level between the output signal of the amplification means and the output signal of the second antiphase amplification means. Thereby, even if the first positive phase output terminal and the second positive phase output terminal are connected by connecting the three-terminal headphone, the first positive phase output terminal and the second positive phase output terminal Potential difference can be reduced. Therefore, damage to the signal output device can be prevented, and crosstalk can be reduced. In addition, when the resistance values of the first and second resistors match the resistance value of the resistance component of the voice coil of the headphone to be connected, the occurrence of crosstalk can be prevented.
【００６０】
また、本発明によると、第１の正相増幅手段及び第２の正相増幅手段と、第１の逆相増幅手段及び第２の逆相増幅手段と、第１の正相増幅手段の出力側に接続される第１の正相出力端子と、第２の正相増幅手段の出力側に接続される第２の正相出力端子と、第１の逆相増幅手段の出力側に接続される第１の逆相出力端子と、第２の逆相増幅手段の出力側に接続される第２の逆相出力端子と、を備え、第１の正相増幅手段及び第１の逆相増幅手段が第１の入力信号を入力し、第２の正相増幅手段及び第２の逆相増幅手段が第２の入力信号を入力し、第１の逆相増幅手段と第１の逆相出力端子とが第１の抵抗を介して接続され、第２の逆相増幅手段と第２の逆相出力端子とが第２の抵抗を介して接続されるので、第１の正相出力端子と第１の逆相出力端子がヘッドホンのボイス・コイルを介して接続されると第１の逆相出力端子の電位を第１の正相増幅手段の出力信号と第１の逆相増幅手段の出力信号との中間レベル付近にすることができ、第２の正相出力端子と第２の逆相出力端子がヘッドホンのボイス・コイルを介して接続されると第２の逆相出力端子の電位を第２の正相増幅手段の出力信号と第２の逆相増幅手段の出力信号との中間レベル付近にすることができる。これにより、３端子ヘッドホンが接続されることによって第１の逆相出力端子と第２の逆相出力端子とが接続されても、第１の逆相出力端子と第２の逆相出力端子との電位差を小さくすることができる。したがって、信号出力装置の破損を防ぐことができ、クロストークを小さくすることができる。また、第１の抵抗及び第２の抵抗の抵抗値がそれぞれ接続されるヘッドホンのボイス・コイルの抵抗成分の抵抗値と一致する場合には、クロストークの発生を防ぐことができる。[0060]
Further, according to the present invention, the first positive phase amplification means and the second positive phase amplification means, the first negative phase amplification means and the second negative phase amplification means, and the output of the first positive phase amplification means And a second positive phase output terminal connected to the output side of the second positive phase amplification means, and a second positive phase output terminal connected to the output side of the first negative phase amplification means. A first negative-phase output terminal and a second negative-phase output terminal connected to the output side of the second negative-phase amplifier, and the first positive-phase amplifier and the first negative-phase amplifier The means receives a first input signal, and the second positive phase amplification means and the second negative phase amplification means receive a second input signal, and the first negative phase amplification means and the first negative phase output The first positive-phase output terminal is connected to the terminal via the first resistor, and the second negative-phase amplifier and the second negative-phase output terminal are connected via the second resistor. First negative phase When the power terminal is connected through the voice coil of the headphone, the potential of the first negative phase output terminal is set to an intermediate level between the output signal of the first positive phase amplification means and the output signal of the first negative phase amplification means When the second positive phase output terminal and the second negative phase output terminal are connected via the voice coil of the headphone, the potential of the second negative phase output terminal is changed to the second positive phase It can be near the intermediate level between the output signal of the amplification means and the output signal of the second antiphase amplification means. Thereby, even if the first reverse phase output terminal and the second reverse phase output terminal are connected by connecting the three-terminal headphone, the first reverse phase output terminal and the second reverse phase output terminal Potential difference can be reduced. Therefore, damage to the signal output device can be prevented, and crosstalk can be reduced. In addition, when the resistance values of the first and second resistors match the resistance value of the resistance component of the voice coil of the headphone to be connected, the occurrence of crosstalk can be prevented.
【００６１】
また、本発明によると、前記第１の入力信号及び第２の入力信号が２値量子化信号であるので、ディジタル信号出力装置となる。これにより、このディジタル信号出力装置とオーディオ機器に設けられる他のディジタル回路とからなる集積回路の製造が容易になり、オーディオ機器の低コスト化を図ることができる。[0061]
Further, according to the present invention, since the first input signal and the second input signal are binary quantization signals, they become digital signal output devices . This facilitates the manufacture of an integrated circuit comprising this digital signal output device and other digital circuits provided in the audio device, and can reduce the cost of the audio device.
Claims (9)
前記増幅手段に入力する入力信号として２値量子化信号を用いることを特徴とする信号出力装置。A pair of amplifying means comprising non-inverting amplifying means for non-inverting amplifying the input signal and negative-phase amplifying means for inverting and amplifying the input signal, and the first connected to the output side of the positive-phase amplifying means And a second output terminal connected to the output side of the negative phase amplification means,
A signal output device characterized by using a binary quantization signal as an input signal input to the amplification means .
前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、
４端子プラグと、前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗と、前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗とを有する音声出力手段が接続されたときに、
前記第１の正相出力端子と前記４端子プラグの第１の端子とが接続され、前記第２の正相出力端子と前記４端子プラグの第２の端子とが接続され、前記第１の逆相出力端子と前記４端子プラグの第３の端子とが接続され、前記第２の逆相出力端子と前記４端子プラグの第４の端子とが接続され、
前記第１の入力信号を増幅した電圧を前記４端子プラグの第１の端子と第３の端子との間に設けられる抵抗の両端に出力し、前記第２の入力信号を増幅した電圧を前記３端子プラグの第２の端子と第４の端子との間に設けられる抵抗の両端に出力することを特徴とする信号出力装置。 A pair of first amplification means comprising a first positive-phase amplification means for non-inverted amplification of the input signal and output, and a first reverse-phase amplification means for inverted amplification and output of the input signal; A pair of second amplification means comprising a second positive phase amplification means for amplifying and outputting and a second reverse phase amplification means for inverting and amplifying an input signal, and an output of the first positive phase amplification means A first positive phase output terminal connected to the output side, a second positive phase output terminal connected to the output side of the second positive phase amplification means, and an output side of the first negative phase amplification means A first negative phase output terminal connected, and a second negative phase output terminal connected to the output side of the second negative phase amplification means,
The first positive phase amplification means and the first negative phase amplification means receive a first input signal, and the second positive phase amplification means and the second negative phase amplification means produce a second input signal. Enter
A 4-terminal plug, a resistor provided between a first terminal and a third terminal of the 4-terminal plug, and a resistor provided between a second terminal and a fourth terminal of the 3-terminal plug When an audio output means having
The first positive phase output terminal is connected to the first terminal of the four-terminal plug, the second positive phase output terminal is connected to the second terminal of the four-terminal plug, and the first The negative phase output terminal and the third terminal of the four-terminal plug are connected, and the second negative phase output terminal and the fourth terminal of the four-terminal plug are connected.
A voltage obtained by amplifying the first input signal is output to both ends of a resistor provided between a first terminal and a third terminal of the four-terminal plug, and a voltage obtained by amplifying the second input signal is output as the voltage A signal output device characterized by outputting at both ends of a resistor provided between a second terminal and a fourth terminal of a three-terminal plug .
前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、 The first positive phase amplification means and the first negative phase amplification means receive a first input signal, and the second positive phase amplification means and the second negative phase amplification means produce a second input signal. Enter
前記第１の正相増幅手段と前記第１の正相出力端子とが第１の抵抗を介して接続され、前記第２の正相増幅手段と前記第２の正相出力端子とが第２の抵抗を介して接続される請求項１に記載の信号出力装置。 The first positive phase amplification means and the first positive phase output terminal are connected via a first resistor, and the second positive phase amplification means and the second positive phase output terminal are secondly The signal output device according to claim 1 connected via a resistor of
前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、 The first positive phase amplification means and the first negative phase amplification means receive a first input signal, and the second positive phase amplification means and the second negative phase amplification means produce a second input signal. Enter
前記第１の逆相増幅手段と前記第１の逆相出力端子とが第１の抵抗を介して接続され、前記第２の逆相増幅手段と前記第２の逆相出力端子とが第２の抵抗を介して接続される請求項１に記載の信号出力装置。 The first reverse phase amplification means and the first reverse phase output terminal are connected via a first resistor, and the second reverse phase amplification means and the second reverse phase output terminal are second The signal output device according to claim 1 connected via a resistor of
前記増幅手段に入力する入力信号として２値量子化信号を用いることを特徴とするステレオ装置。 A stereo apparatus characterized in that a binary quantization signal is used as an input signal input to the amplification means.
前記第１の正相増幅手段及び前記第１の逆相増幅手段が第１の入力信号を入力し、前記第２の正相増幅手段及び前記第２の逆相増幅手段が第２の入力信号を入力し、
４つの端子を有するプラグのそれぞれの端子が、前記第１の正相出力端子と、前記第２の正相出力端子と、前記第１の逆相出力端子と、前記第２の逆相出力端子とにそれぞれ接続されたときに、
前記第１の正相出力端子に接続される前記プラグの端子と、前記第１の逆相出力端子に接続される前記プラグの端子との間に設けた抵抗により両端子間の電圧を発生させ、
前記第２の正相出力端子に接続される前記プラグの端子と、前記第２の逆相出力端子に接続される前記プラグの端子との間に設けた抵抗により両端子間の電圧を発生させることを特徴とするステレオ装置。 A pair of first amplification means comprising a first positive-phase amplification means for non-inverted amplification of the input signal and output, and a first reverse-phase amplification means for inverted amplification and output of the input signal; A pair of second amplification means comprising a second positive phase amplification means for amplifying and outputting and a second reverse phase amplification means for inverting and amplifying an input signal, and an output of the first positive phase amplification means A first positive phase output terminal connected to the output side, a second positive phase output terminal connected to the output side of the second positive phase amplification means, and an output side of the first negative phase amplification means A first negative phase output terminal connected, and a second negative phase output terminal connected to the output side of the second negative phase amplification means,
The first positive phase amplification means and the first negative phase amplification means receive a first input signal, and the second positive phase amplification means and the second negative phase amplification means produce a second input signal. Enter
Each terminal of a plug having four terminals is the first positive phase output terminal, the second positive phase output terminal, the first negative phase output terminal, and the second negative phase output terminal. And when connected to
A voltage between both terminals is generated by a resistor provided between a terminal of the plug connected to the first positive phase output terminal and a terminal of the plug connected to the first negative phase output terminal ,
The voltage between both terminals is generated by the resistance provided between the terminal of the plug connected to the second positive phase output terminal and the terminal of the plug connected to the second negative phase output terminal A stereo device characterized by
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