JPH0529977A - Wireless microphone receiver - Google Patents
Wireless microphone receiverInfo
- Publication number
- JPH0529977A JPH0529977A JP18607491A JP18607491A JPH0529977A JP H0529977 A JPH0529977 A JP H0529977A JP 18607491 A JP18607491 A JP 18607491A JP 18607491 A JP18607491 A JP 18607491A JP H0529977 A JPH0529977 A JP H0529977A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- phantom
- coaxial cable
- phantom power
- tone
- 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.)
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Links
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、同軸ケーブルを通して
アンテナ装置の機能を遠隔制御できるワイヤレスマイク
ロホン受信機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless microphone receiver capable of remotely controlling the function of an antenna device through a coaxial cable.
【０００２】[0002]
【従来の技術】近年、ワイヤレスマイクロホンに使用さ
れる電波の周波数が高くなり、それにともなってアンテ
ナと受信装置を接続する同軸ケーブルでの信号レベルの
損失が問題となることから、受信装置を二分し、アンテ
ナに近い部分であるアンテナ装置で中間周波数まで下
げ、中間周波信号を同軸ケーブルで伝えるようになっ
た。アンテナ装置に必要な電源を同軸ケーブルを利用し
て供給するファンタム電源方式が多く用いられている。2. Description of the Related Art In recent years, the frequency of radio waves used in wireless microphones has increased, and the loss of signal level in the coaxial cable connecting the antenna and the receiving device has become a problem. , The antenna device, which is the part near the antenna, lowered to the intermediate frequency, and the intermediate frequency signal came to be transmitted by the coaxial cable. A phantom power supply system is often used to supply power required for an antenna device using a coaxial cable.
【０００３】以下に従来のワイヤレスマイクロホン受信
機について説明する。図３は従来のワイヤレスマイクロ
ホン受信機の構成を示すブロック図である。同図におい
て、１は受信用アンテナ、３１は受信用アンテナ１から
の高周波信号を入力とし、中間周波信号を後記同軸ケー
ブル３へ出力するアンテナ装置、３はアンテナ装置３１
と後記ファンタム電源供給装置３２とを接続する同軸ケ
ーブル、３２は同軸ケーブル３を通じて入力する中間周
波信号を処理して音声信号を出力するとともに同軸ケー
ブル３を通してアンテナ装置３１に電源電力を供給する
ファンタム電源供給装置である。５は高周波増幅部、７
は局部発振部、８は高周波増幅部５と局部発振部７との
２入力信号の差の周波数である中間周波数をつくる周波
数混合部、９は周波数混合部８の出力のうち中間周波数
を選択増幅する中間周波増幅部、１０は同軸ケーブル３
で送られてきたファンタム電源を定電圧に安定化する定
電圧電源部、３４はアンテナ装置３１の電源供給状態を
表示する発光ダイオード、１４は同軸ケーブル３を通し
て入力した中間周波信号を増幅する中間周波増幅部、１
５は中間周波信号を復調して音声信号を出力する復調部
である。A conventional wireless microphone receiver will be described below. FIG. 3 is a block diagram showing the configuration of a conventional wireless microphone receiver. In the figure, 1 is a receiving antenna, 31 is an antenna device that receives a high frequency signal from the receiving antenna 1 and outputs an intermediate frequency signal to a coaxial cable 3 described later, and 3 is an antenna device 31.
And a phantom power supply device 32 which will be described later. A phantom power supply 32 supplies an electric power to the antenna device 31 through the coaxial cable 3 while processing an intermediate frequency signal input through the coaxial cable 3 and outputting an audio signal. It is a supply device. 5 is a high frequency amplifier, 7
Is a local oscillating section, 8 is a frequency mixing section for producing an intermediate frequency which is a frequency of a difference between two input signals of the high frequency amplifying section 5 and the local oscillating section 7, and 9 is a frequency amplifier for selectively amplifying the intermediate frequency of the outputs of the frequency mixing section Intermediate frequency amplifying section 10, coaxial cable 3
A constant voltage power supply unit that stabilizes the phantom power sent to the device at a constant voltage, 34 is a light emitting diode that displays the power supply state of the antenna device 31, and 14 is an intermediate frequency that amplifies the intermediate frequency signal input through the coaxial cable 3. Amplifier, 1
A demodulation unit 5 demodulates the intermediate frequency signal and outputs a voice signal.
【０００４】以下その動作について説明する。まず、電
波の到来によって受信用アンテナ１に誘起された高周波
信号は高周波増幅部５で増幅され、周波数混合部８に入
る。また、局部発振部７で発振した正弦波も周波数混合
部８に入り、高周波信号周波数と局部発振周波数の差の
周波数がつくられて中間周波増幅部９で増幅され、同軸
ケーブル３を通って中間周波増幅部１４で増幅され復調
部１５で音声信号に変わり、音響源として利用される。
一方、アンテナ装置の動作に必要な電源電力はファンタ
ム電源部３３でつくられて同軸ケーブル３を通して定電
圧電源部１０に入り、一定電圧に安定化され、各回路に
供給される。また、電源供給中は発光ダイオード３４が
点灯し表示する。The operation will be described below. First, the high frequency signal induced in the receiving antenna 1 by the arrival of the radio wave is amplified by the high frequency amplifier 5 and enters the frequency mixer 8. The sine wave oscillated by the local oscillator 7 also enters the frequency mixer 8, a frequency difference between the high-frequency signal frequency and the local oscillation frequency is created, amplified by the intermediate frequency amplifier 9, and passed through the coaxial cable 3 to form an intermediate signal. The signal is amplified by the frequency amplification unit 14 and converted into an audio signal by the demodulation unit 15, which is used as a sound source.
On the other hand, the power supply required for the operation of the antenna device is generated by the phantom power supply 33, enters the constant voltage power supply 10 through the coaxial cable 3, is stabilized at a constant voltage, and is supplied to each circuit. Further, the light emitting diode 34 lights up and displays while the power is being supplied.
【０００５】同軸ケーブル３での伝送損失はケーブルの
品種や長さで異なるため、ファンタム電源供給装置３２
へ入力する中間周波信号レベルが極端な値になるのを防
ぐ手段として、アンテナ装置からの中間周波信号出力レ
ベルを切り替えるスイッチを設ける等の策がとられてい
る。Since the transmission loss in the coaxial cable 3 varies depending on the type and length of the cable, the phantom power supply device 32
As a means for preventing the intermediate frequency signal level input to the terminal from becoming an extreme value, measures such as providing a switch for switching the intermediate frequency signal output level from the antenna device are taken.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来のワイヤレスマイクロホン受信機では、受信用アンテ
ナ１およびアンテナ装置３１は大規模なホールの天井に
設置される場合が多く、また、動作試験や調整の時期が
装置の設置、配線工事の完了後であるため、ケーブル損
失に応じた調整をアンテナ装置側で行うことは至難であ
った。However, in the above-mentioned conventional wireless microphone receiver, the receiving antenna 1 and the antenna device 31 are often installed on the ceiling of a large-scale hall, and the operation test and adjustment are not required. Since it was after the installation of equipment and the completion of wiring work, it was extremely difficult to make adjustments according to cable loss on the antenna device side.
【０００７】また、設置されるホール等の使用状況によ
って、電源表示の発光ダイオード３４の消灯を要望され
る場合があるにもかかわらず応じかねる等の問題を有し
ていた。In addition, there is a problem in that the light emitting diode 34 for indicating the power supply may be required to be turned off depending on the usage status of the hall or the like to be installed, but it is not possible to comply.
【０００８】本発明は上記従来の問題を解決するもの
で、アンテナ装置での中間周波出力レベルの切り替えや
発光ダイオードの消灯等の操作を、作業に安全なファン
タム電源供給装置側で遠隔制御できるワイヤレスマイク
ロホン受信機を提供することを目的とする。The present invention solves the above-mentioned problems of the related art, and the operation such as the switching of the intermediate frequency output level and the turning off of the light emitting diode in the antenna device can be remotely controlled by the phantom power supply device side which is safe for work. It is an object to provide a microphone receiver.
【０００９】[0009]
【課題を解決するための手段】この目的を達成するため
に本発明のワイヤレスマイクロホン受信機は、
（１）制御入力に応じた周波数のトーン信号を発生する
トーン発振部とファンタム電源部とを備えたファンタム
電源供給装置と、上記トーン信号を識別するトーン識別
部を備えたアンテナ装置と、上記ファンタム電源供給装
置と上記アンテナ装置とを接続する同軸ケーブルとを有
し、上記ファンタム電源部から上記アンテナ装置に上記
同軸ケーブルを通して電源電力を供給するとともに、上
記電源電力に上記トーン信号を重畳させ遠隔制御するよ
うにしている。To achieve this object, a wireless microphone receiver of the present invention comprises (1) a tone oscillating section for generating a tone signal having a frequency corresponding to a control input and a phantom power source section. A phantom power supply device, an antenna device having a tone identifying section for identifying the tone signal, and a coaxial cable connecting the phantom power supply device and the antenna device. Power is supplied to the device through the coaxial cable, and the tone signal is superimposed on the power to be remotely controlled.
【００１０】（２）制御入力に応じて供給電源電圧を変
える手段を持つファンタム電源部を備えたファンタム電
源供給装置と、上記供給電源電圧を識別する電源電圧識
別部を備えたアンテナ装置と、上記ファンタム電源供給
装置と上記アンテナ装置とを接続する同軸ケーブルとを
有し、上記ファンタム電源部から上記アンテナ装置に上
記同軸ケーブルを通して電源電圧を供給し遠隔制御する
ようにしている。(2) A phantom power supply device having a phantom power supply unit having means for changing the supply power supply voltage according to a control input, an antenna device having a power supply voltage identification unit for identifying the supply power supply voltage, and A phantom power supply device and a coaxial cable for connecting the antenna device are provided, and a power supply voltage is supplied from the phantom power supply unit to the antenna device through the coaxial cable for remote control.
【００１１】[0011]
【作用】上記構成による作用は以下のようである。The operation of the above construction is as follows.
【００１２】（１）制御入力に応じた周波数のトーン信
号がファンタム電源部の電源電力に重畳して同軸ケーブ
ルを通してアンテナ装置に達し、トーン識別部で識別さ
れ、トーン信号に対応した内容の、アンテナ装置の機能
制御がファンタム電源供給装置側で可能となる。(1) A tone signal having a frequency corresponding to the control input is superimposed on the power of the phantom power source, reaches the antenna device through the coaxial cable, is identified by the tone identifying unit, and has the content corresponding to the tone signal. Function control of the device becomes possible on the phantom power supply device side.
【００１３】（２）制御入力に応じて定められた電圧値
のファンタム電源電圧が同軸ケーブルを通してアンテナ
装置に達し、電源電圧識別部で識別され、電圧値に対応
した内容の、アンテナ装置の機能制御がファンタム電源
供給装置側で可能となる。(2) The phantom power supply voltage having a voltage value determined according to the control input reaches the antenna device through the coaxial cable, is identified by the power supply voltage identifying unit, and is functionally controlled by the antenna device in accordance with the voltage value. Is possible on the phantom power supply side.
【００１４】[0014]
【実施例】以下本発明の実施例について、図面を参照し
ながら説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】（実施例１）図１において、１は受信用ア
ンテナ、２はその受信用アンテナ１からの高周波信号を
入力とし、中間周波信号を後記同軸ケーブル３へ出力す
るアンテナ装置、３はアンテナ装置２と後記ファンタム
電源供給装置４とを接続する同軸ケーブル、４は同軸ケ
ーブル３を通して入力する中間周波信号を処理して音声
信号を出力するとともに、同軸ケーブル３を通してアン
テナ装置２に電源電力を供給するファンタム電源供給装
置である。５は高周波増幅部、６は後記トーン識別部１
１のレベル切替出力によって高周波信号のレベルを切り
替えるレベル制御部、７は局部発振部、８は高周波増幅
部５と局部発振部７との２入力信号の差の周波数である
中間周波信号をつくる周波数混合部、９は周波数混合部
８の出力のうち中間周波数を選択増幅する中間周波増幅
部、１０は同軸ケーブル３で送られてきたファンタム電
源を定電圧に安定化する定電圧電源部、１１は同軸ケー
ブル３で送られてきたトーン信号を識別して制御出力を
出すトーン識別部、１２は後記発光ダイオード１３をト
ーン識別部１１の表示切替出力によって強制消灯させる
表示制御部、１３はアンテナ装置２の電源供給状態を表
示する発光ダイオード、１４は同軸ケーブル３を通じて
入力した中間周波信号を増幅する中間周波増幅部、１５
は中間周波信号を復調して音声信号を出力する復調部、
１６は制御入力に応じた周波数のトーン信号を発生する
トーン発振部、１７はファンタム電源用直流電力にトー
ン発振部１６からのトーン信号を重畳させ同軸ケーブル
３に送出するファンタム電源部である。(Embodiment 1) In FIG. 1, 1 is a receiving antenna, 2 is an antenna device for receiving a high frequency signal from the receiving antenna 1, and outputting an intermediate frequency signal to a coaxial cable 3 described later, 3 is an antenna Coaxial cables 4 for connecting the device 2 and a phantom power supply device 4 which will be described later process intermediate frequency signals input through the coaxial cable 3 and output audio signals, and supply power to the antenna device 2 through the coaxial cable 3. Phantom power supply device. Reference numeral 5 is a high frequency amplifier, and 6 is a tone identifying section 1 described later.
A level control unit for switching the level of the high frequency signal by the level switching output of 1, a local oscillating unit, a frequency 8 for producing an intermediate frequency signal which is a frequency difference between two input signals of the high frequency amplifying unit 5 and the local oscillating unit 7. Mixing section 9, an intermediate frequency amplification section for selectively amplifying an intermediate frequency in the output of the frequency mixing section 8, 10 a constant voltage power supply section for stabilizing the phantom power sent by the coaxial cable 3 to a constant voltage, and 11 a A tone discriminating section for discriminating the tone signal sent by the coaxial cable 3 and outputting a control output, 12 is a display control section for forcibly turning off the light emitting diode 13 described later by the display switching output of the tone discriminating section 11, and 13 is an antenna device 2 , A light emitting diode for displaying the power supply state of the device, 14 is an intermediate frequency amplifier for amplifying the intermediate frequency signal input through the coaxial cable 3, and 15
Is a demodulation unit that demodulates the intermediate frequency signal and outputs a voice signal,
Reference numeral 16 is a tone oscillating section for generating a tone signal having a frequency corresponding to the control input, and 17 is a phantom power source section for superimposing the tone signal from the tone oscillating section 16 on the DC power for phantom power source and sending it to the coaxial cable 3.
【００１６】次にその動作について説明する。電波の到
来によって受信用アンテナ１に誘起された高周波信号は
高周波増幅部５、レベル制御部６を経て周波数混合部８
に入り、局部発振部７で発生する局部発振周波数との差
の周波数である中間周波信号がつくられて中間周波増幅
部９で増幅され、同軸ケーブル３を通ってファンタム電
源供給装置４に達し、中間周波増幅部１４で増幅され復
調部１５で音声信号に変わり、音響源として利用され
る。一方、アンテナ装置の動作に必要な電源電力はファ
ンタム電源部１７でつくられて同軸ケーブル３を通して
定電圧電源部１０に入り、一定電圧に安定化され、各回
路に供給される。トーン発振部１６に入る制御入力とし
て本実施例では、チャンネル周波数切替と中間周波信号
出力のレベル切替と電源表示の入り切り切替の３項目が
ある。これら３項目それぞれの状態の組合せに応じた周
波数のトーン信号がトーン発振部１６で発生し、ファン
タム電源部１７に入ってここで作られるファンタム電源
用直流電力に重畳して同軸ケーブル３を経由してアンテ
ナ装置２に達する。直流は定電圧電源部１０で電圧を安
定化させられ各回路の電源として供給される。トーン信
号はトーン識別部１１に入り、周波数により識別され
て、制御項目ごとに制御出力を出す。チャンネル周波数
切替出力は局部発振部７の発振周波数を制御し、レベル
切替出力はレベル制御部６の高周波信号のレベルを制御
してアンテナ装置２から同軸ケーブル３に出力する中間
周波信号レベルを増減させ、表示切替出力は表示制御部
１２によって電源電圧の有無を表示する発光ダイオード
１３の回路を強制的に切るか否かを制御するものであ
る。Next, the operation will be described. The high-frequency signal induced in the receiving antenna 1 by the arrival of the radio wave passes through the high-frequency amplifying unit 5 and the level control unit 6 and then the frequency mixing unit 8
Then, an intermediate frequency signal having a frequency difference from the local oscillation frequency generated in the local oscillation section 7 is produced, amplified by the intermediate frequency amplification section 9, and reaches the phantom power supply device 4 through the coaxial cable 3, The intermediate frequency amplifier 14 amplifies the signal, and the demodulator 15 converts it into an audio signal, which is used as a sound source. On the other hand, the power supply required for the operation of the antenna device is generated by the phantom power supply unit 17, enters the constant voltage power supply unit 10 through the coaxial cable 3, is stabilized to a constant voltage, and is supplied to each circuit. In this embodiment, there are three control inputs to the tone oscillating unit 16: channel frequency switching, intermediate frequency signal output level switching, and power display on / off switching. A tone signal of a frequency corresponding to the combination of the states of these three items is generated in the tone oscillation unit 16, enters the phantom power supply unit 17, and is superimposed on the DC power for phantom power supply produced here and is passed through the coaxial cable 3. To reach the antenna device 2. The direct current is stabilized in voltage by the constant voltage power supply unit 10 and is supplied as power for each circuit. The tone signal enters the tone identifying section 11, is identified by the frequency, and outputs a control output for each control item. The channel frequency switching output controls the oscillation frequency of the local oscillator 7, and the level switching output controls the level of the high frequency signal of the level controller 6 to increase or decrease the intermediate frequency signal level output from the antenna device 2 to the coaxial cable 3. The display switching output controls whether the circuit of the light emitting diode 13 for displaying the presence or absence of the power supply voltage is forcibly turned off by the display control unit 12.
【００１７】（実施例２）図２において、図１と異なる
点を記せば、２１はファンタム電源部１７から同軸ケー
ブル３を通して送られる直流電力の電圧値を識別してそ
の電圧値に応じた制御出力を出す電源電圧識別部、２２
はファンタム電源部１７の直流出力電圧を制御入力に応
じた電圧値とさせるよう制御する電圧制御部である。(Embodiment 2) In FIG. 2, if a difference from FIG. 1 is noted, reference numeral 21 identifies the voltage value of the DC power sent from the phantom power supply section 17 through the coaxial cable 3 and controls according to the voltage value. A power supply voltage identification unit for outputting an output, 22
Is a voltage control unit that controls the DC output voltage of the phantom power supply unit 17 to a voltage value according to the control input.
【００１８】次にその動作について説明する。電圧制御
部２２に入る制御入力として本実施例では、チャンネル
周波数切替と中間周波信号出力のレベル切替と電源表示
の入り切り切替の３項目がある。これら３項目それぞれ
の状態の組合せに応じた直流電圧値がファンタム電源部
１７から出力されるように電圧制御部２２が制御する。
上記の電圧のファンタム電源用直流電力が同軸ケーブル
３を経てアンテナ装置２に至り、ここの定電圧電源部１
０において一定の電圧に安定化され各回路に供給され
る。一方、ファンタム電源用直流電圧は電源電圧識別部
２１に入り、電圧値によって識別され、その電圧値に応
じた３項目の制御出力を出力する。各項目の制御につい
ては上記第１の実施例と同じである。Next, the operation will be described. In this embodiment, there are three control inputs to the voltage control unit 22: channel frequency switching, intermediate frequency signal output level switching, and power display on / off switching. The voltage control unit 22 controls the phantom power supply unit 17 to output a DC voltage value corresponding to the combination of the states of these three items.
DC power for the phantom power source having the above voltage reaches the antenna device 2 through the coaxial cable 3, and the constant voltage power source unit 1 there
At 0, the voltage is stabilized to a constant voltage and supplied to each circuit. On the other hand, the DC voltage for the phantom power supply enters the power supply voltage identification section 21, is identified by the voltage value, and outputs the control output of three items according to the voltage value. The control of each item is the same as that of the first embodiment.
【００１９】[0019]
【発明の効果】以上のように本発明は、同軸ケーブルを
通してアンテナ装置の機能をファンタム電源供給装置側
から遠隔制御することができ、一般に不便で危険な、近
づき難い場所に設置されることの多いアンテナ装置の場
所まで一々行かなくても機能変更ができるので、設置調
整または保守に携わる作業者の安全と作業能率向上の両
面で効果がある。As described above, according to the present invention, the function of the antenna device can be remotely controlled from the phantom power supply device side through the coaxial cable, and it is generally installed in an inconvenient and dangerous place that is difficult to approach. Since it is possible to change the function without having to go to the location of the antenna device one by one, it is effective in terms of both the safety of a worker involved in installation adjustment and maintenance and the improvement of work efficiency.
【図１】本発明の第１の実施例におけるワイヤレスマイ
クロホン受信機の概略ブロック図FIG. 1 is a schematic block diagram of a wireless microphone receiver according to a first embodiment of the present invention.
【図２】本発明の第２の実施例におけるワイヤレスマイ
クロホン受信機の概略ブロック図FIG. 2 is a schematic block diagram of a wireless microphone receiver according to a second embodiment of the present invention.
【図３】従来のワイヤレスマイクロホン受信機の概略ブ
ロック図FIG. 3 is a schematic block diagram of a conventional wireless microphone receiver.
１ 受信用アンテナ ２ アンテナ装置 ３ 同軸ケーブル ４ ファンタム電源供給装置 １１ トーン識別部 １６ トーン発振部 １７ ファンタム電源部 ２１ 電源電圧識別部 ２２ 電圧制御部 1 receiving antenna 2 antenna device 3 coaxial cable 4 Phantom power supply device 11 Tone identification section 16 tone oscillator 17 Phantom power supply 21 Power supply voltage identification section 22 Voltage control unit
Claims (2)
生するトーン発振部とファンタム電源部とを備えたファ
ンタム電源供給装置と、上記トーン信号を識別するトー
ン識別部を備えたアンテナ装置と、上記ファンタム電源
供給装置と上記アンテナ装置とを接続する同軸ケーブル
とを有し、上記ファンタム電源部から上記アンテナ装置
に上記同軸ケーブルを通して電源電力を供給するととも
に、上記電源電力に上記トーン信号を重畳させ遠隔制御
することを特徴とするワイヤレスマイクロホン受信機。1. A phantom power supply device including a tone oscillating unit for generating a tone signal having a frequency corresponding to a control input and a phantom power supply unit, and an antenna device including a tone identifying unit for identifying the tone signal. It has a coaxial cable that connects the phantom power supply device and the antenna device, and supplies power from the phantom power supply unit to the antenna device through the coaxial cable, and superimposes the tone signal on the power power. A wireless microphone receiver that is remotely controlled.
段を持つファンタム電源部を備えたファンタム電源供給
装置と、上記供給電源電圧を識別する電源電圧識別部を
備えたアンテナ装置と、上記ファンタム電源供給装置と
上記アンテナ装置とを接続する同軸ケーブルとを有し、
上記ファンタム電源部から上記アンテナ装置に上記同軸
ケーブルを通して電源電圧を供給し遠隔制御することを
特徴とするワイヤレスマイクロホン受信機。2. A phantom power supply device having a phantom power supply unit having means for changing the supply power supply voltage according to a control input, an antenna device having a power supply voltage identification unit for identifying the supply power supply voltage, and the phantom. Having a coaxial cable connecting the power supply device and the antenna device,
A wireless microphone receiver characterized in that a power supply voltage is supplied from the phantom power supply unit to the antenna device through the coaxial cable to perform remote control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18607491A JPH0529977A (en) | 1991-07-25 | 1991-07-25 | Wireless microphone receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18607491A JPH0529977A (en) | 1991-07-25 | 1991-07-25 | Wireless microphone receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0529977A true JPH0529977A (en) | 1993-02-05 |
Family
ID=16181933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18607491A Pending JPH0529977A (en) | 1991-07-25 | 1991-07-25 | Wireless microphone receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016106543B4 (en) | 2015-04-10 | 2022-03-03 | Sennheiser Electronic Gmbh & Co. Kg | Method for controlling a wireless audio receiving unit and wireless audio receiving unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127612A (en) * | 1978-03-27 | 1979-10-03 | Matsushita Electric Ind Co Ltd | Receiving device |
| JPS56754A (en) * | 1979-06-14 | 1981-01-07 | Matsushita Electric Ind Co Ltd | Receiver |
-
1991
- 1991-07-25 JP JP18607491A patent/JPH0529977A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54127612A (en) * | 1978-03-27 | 1979-10-03 | Matsushita Electric Ind Co Ltd | Receiving device |
| JPS56754A (en) * | 1979-06-14 | 1981-01-07 | Matsushita Electric Ind Co Ltd | Receiver |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016106543B4 (en) | 2015-04-10 | 2022-03-03 | Sennheiser Electronic Gmbh & Co. Kg | Method for controlling a wireless audio receiving unit and wireless audio receiving unit |
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