JPH10108288A - Infrared ray cordless microphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an infrared ray cordless microphone system provided with a function of remote control whose performance is sufficiently enhance. SOLUTION: In the system consisting of an infrared ray cordless microphone 3 having an infrared ray emission section, infrared ray receiving sensor 2, 2' mounted on a wall or a ceiling, a receiver main body 1 conducting signal processing, and a karaoke sing along device 4, the microphone 3 has a function of sending a remote control signal in addition to a function of providing a microphone output. In the infrared ray cordless microphone with a remote control function for karaoke sing along system, a singer simply controls the system at a hand and the system does not require any special function conversion in terms of software for new music to be on sale in future as well as music being already released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cordless microphone system using infrared communication means.

[0002]

2. Description of the Related Art Usually, in order to enjoy karaoke with duet music in a karaoke house or the like, men and women have their own cord-type or cordless-type microphones and sing and enjoy alternately or together.

In addition, a karaoke device is provided with a special signal processing function so that a single person can enjoy a duet song, and a karaoke device for converting a singer's voice from male to female or female to male, or as if together. There is provided a karaoke apparatus capable of listening to voices of both men and women as if they were singing.

[0004]

However, switching of the functions requires a special infrared remote control (hereinafter referred to as a remote control), and the singer must operate two or more devices each. Have inconvenience.

[0005] In addition, it is necessary to add a special function to the software as a karaoke sound source, and even if only the above-mentioned special function is provided to all the already-released songs, enormous cost is required.

[0006] In recent years, an infrared cordless microphone system is often used because of the trouble such as pulling a cord-type microphone when enjoying karaoke. Or, it is often blocked by karaoke equipment or the like, and the performance cannot be fully exhibited.

[0007] It is an object of the present invention to reduce the cost of the software and to eliminate the trouble of operating two or more devices when enjoying karaoke, and to improve the performance of the software. An object of the present invention is to provide an infrared cordless microphone system with a remote control function that can be used.

[0008]

An object of the present invention is to provide an infrared cordless microphone having a microphone output switching unit and a remote control signal transmitting unit, and a receiver main body having an infrared light receiving sensor and an output switching circuit. This is achieved by the first means.

In the first means, the presence or absence of an infrared carrier is regarded as a microphone output switching signal, and a microphone power on / off switch having a microphone output switching function and a remote control signal transmitting function is provided. Achieved by means.

Further, the first means is achieved by a third means for superimposing a microphone output signal and a remote control signal on an infrared carrier.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, an infrared cordless microphone system according to the present invention has a receiver main body 1 for performing signal processing, infrared light receiving sensors 2 and 2 'mounted on a wall or a ceiling, and an infrared cordless microphone 3 having an infrared light emitting section. Karaoke equipment 4 is connected to the singer 5, so that the singer 5 can enjoy karaoke using the infrared cordless microphone system.

Hereinafter, an infrared cordless microphone system according to an embodiment of the present invention will be described with reference to FIGS.
It will be described based on.

The infrared cordless microphone 3 shown in FIG. 2 has a built-in battery, a power on / off switch 3a, a microphone unit for converting sound into an electric signal, a built-in infrared transmitting unit for converting an electric signal into infrared light, A plurality of radially arranged infrared light emitting elements 3c are built in the lower part of the microphone body.

FIG. 3 is a block diagram of an infrared microphone transmitting unit in the carrier wave detection switching system. Switch T
6, the power supply T7, and the operation of the carrier wave transmitting unit T8, the voice signal of the user (singer) 5 is transmitted to the microphone unit T
1. FM modulation is performed by the FM modulation unit T3 via the microphone amplifier T2.

The carrier wave signal passes through the LED output amplifier T4 and is output from the infrared light emitting element 3c shown in FIG. 2 to the air as an infrared signal from the infrared light emitting diode T5.

FIG. 4 is an internal block diagram of the infrared light receiving sensors 2 and 2 ′ and the receiver main body 1. The infrared aerial signal output from the microphone 3 is a photodiode R1 and a photodiode amplifier R2 shown in FIG.
The infrared light receiving sensors 2, 2 '
The signal is converted into an electric signal by the photodiode amplifier R2 and reaches the demodulation unit of the receiver main body 1.

The electric signal arriving at the demodulation unit passes through a band-pass filter (BPF) R3 as a unique carrier signal by the infrared cordless microphone 3, and is transmitted to the FM.
The signal is FM-demodulated by a demodulation unit R4, and furthermore, an audio output amplifier
Are converted to audio signals and output as audio outputs R6A and R6B via an output switching circuit R6.

A carrier detection circuit R7 and a mode switching ternary counter R8 for detecting the presence or absence of a carrier signal after passing through the band pass filter R3 are provided. This mode switching ternary counter R8 is incremented by the number of times the carrier detection signal is turned on and off. That is, by operating the output switching circuit R6 for switching the audio output in accordance with the value of the mode switching ternary counter R8, the number of times of output of the carrier by the power ON / OFF switch 3a of the microphone 3 is switched by the mode. Ternary counter R
6 and the operation of switching the voice output to three modes of male voice, female voice, and duet.

That is, in the carrier wave detection switching system, the presence / absence of an infrared carrier wave is regarded as a microphone output switching signal in the above configuration, and the power on / off switch 3a is also used as a microphone output switching switch and a remote control signal transmission switch.

FIG. 5 is a table showing the relationship between the counter value of the mode switching ternary counter shown in FIG. 4, the outputs A and B, and the audio mode. In the table, audio output A (R6A) indicates normal audio (male), audio output B (R6B) indicates voice changer audio (female), and both outputs indicate the synthesis thereof.

FIG. 6 is a timing chart of each part shown in FIG. From the relationship between the output A and the output B, the above-described voice mode [normal voice (male), voice changer voice (female), voice changer voice + normal voice (male + female)] is obtained. In the case of further increasing the number of modes or the like, n (n = 2 or more) mode settings can be made by changing the ternary counter R8 to 4-n.

Next, an infrared cordless microphone system with a remote control function for karaoke which superimposes a microphone output signal and a remote control signal on an infrared carrier wave will be described as a control code reproducing method with reference to FIGS.

As shown in FIG. 2, the infrared cordless microphone 3 has a power on / off switch 3a.
In addition, an infrared remote control switch 3b having a function as a remote control signal transmission switch is provided.

FIG. 7 shows an infrared cordless microphone 3 provided with an infrared remote control switch 3b and a key (KE).
Y) a switch TP6 composed of 1 to 3 keys (KEY);
FIG. 3 is a block diagram of an infrared cordless microphone as a transmission unit in which an arbitrary voice conversion mode can be selected by superimposing a control code corresponding to each key on an infrared carrier.

The voice signal of the user 5 passes through the microphone unit TP1 and the microphone amplifier TP2 and is FM-modulated by the FM modulator TP3. And this carrier signal f
_0, switch TP6, the key detection unit TP7, carrier f ₁ passing through the control code oscillator and modulating unit T8 reaches the combining circuit TP9.

The carrier f ₁ is a carrier having a frequency sufficiently lower than the infrared output carrier frequency f ₀ for sound output, and is superimposed on f ₀ by the synthesizing circuit TP9. The LED output amplifier TP4 outputs the infrared signal from the infrared light emitting diode TP5 to the air via the infrared light emitting element 3c.

Further, this infrared aerial signal reaches the infrared light receiving sensors 2 and 2 'comprising a photodiode RP1 and a photodiode amplifier RP2 shown in FIG. 8, is converted into an electric signal by the photodiode amplifier RP2, and To the demodulation unit of the receiver main body 1 as shown in FIG.

The electric signal reaches the demodulation unit part through the band pass filter (BPF) RP3 as a unique sound carrier signal f ₀ by an infrared cordless microphones, a FM demodulation reaches the FM demodulator RP4, further low-pass filter The audio signal is converted into an audio signal by an audio output amplifier RP6 via an (LPF) RP5 and output as an audio output RP6A.

Incidentally, the superimposed infrared aerial signal for control code reaches the infrared light receiving sensors 2 and 2 'comprising a photodiode RP1 and a photodiode amplifier RP2, and is converted into an electric signal by the photodiode amplifier RP2. Arrives at the demodulation unit of the receiver body 1 as a receiver.

The control code carrier from the photodiode amplifier RP2 is, f ₁ band pass filter (BPF) R
Through P7, a control code output circuit RP6C is output via a control code reproduction circuit RP8.

The voice output RP6A and the control code output RP6C reach a commander unit as a central processing unit of the karaoke apparatus 4 shown in FIG. 9, and the control code demodulation unit RP9 converts the voice output into a male voice inside the voice conversion circuit RP10.
The operation of switching to the three modes of female voice and duet is realized, and an AO converted voice output RP6AO is obtained. It transmits the coded signal at a sufficiently low frequency f ₁ of the carrier than the infrared carrier frequency f ₀ for audio output as described above, thereby remotely operating the karaoke system 4 shown in FIG. 1, of course, optionally the number of keys It can be selected to provide necessary functions, and it is also possible to share the power supply, share the LED for voice output and the LED for control code.

Further, the control code reproducing method includes a method of separating the voice carrier f ₀ and the control code carrier f ₁ in the receiving section shown in FIGS.
As shown in FIG. 10, there is a method in which the control code is reproduced by a remote operation (remote control) receiving unit built in the commander unit 4a as a central processing unit of the Karakeo apparatus 4.

An infrared remote control switch 3b is provided on the infrared cordless microphone 3 as a transmitting unit, and an arbitrary voice conversion mode can be selected by superimposing a switch TP6 and a control code corresponding to each key on the infrared carrier. The blocks are as described above.

When the commander unit 4a as the central processing unit of the karaoke apparatus 4 and the infrared cordless microphone receiver (receiver main body 1) are individually constructed and connected, for example, the infrared aerial signal is a photodiode RP1, f ₀ reaches the bandpass filter RP3, FM demodulator RP4 is FM demodulated and outputted to the audio output RP6A.

[0035] The infrared aerial signal the superposed control code photodiode RP1 'and f ₁ band pass filter RP7', a control code output RP6C via control code demodulation circuit RP9 '.

The voice output RP6A and the control code output RP6C are output in three modes of a male voice, a female voice and a duet in a voice conversion circuit RP10 built in a commander unit 4a as a central processing unit of the karaoke apparatus 4. RP6AO conversion sound output
Becomes

[0037]

The infrared cordless microphone system with a remote control function for karaoke according to the present invention having the above-described configuration allows a singer to easily operate it at hand, and it will be released in addition to already-released songs. There is no need to perform any special software conversion on the new deaf song, and the cost of the software can be greatly reduced. In addition, it is possible to eliminate the inconvenience of the various operations described above, such as operating two or more devices when enjoying karaoke.

[Brief description of the drawings]

FIG. 1 is an infrared cordless embodiment according to the present invention.
It is a system conceptual diagram of a microphone system.

FIG. 2 is an external perspective view of a cordless microphone with an infrared remote controller used in the system.

FIG. 3 is a block diagram showing a first example of a transmission unit in the system.

FIG. 4 is a block diagram showing a first example of a receiving unit in the system.

5 is a table showing a relationship between a counter value of a mode switching ternary counter shown in FIG. 4 and outputs A and B and a sound mode.

FIG. 6 is a timing chart of each unit shown in FIG.

FIG. 7 is a block diagram showing a second example of the transmission unit of the infrared cordless microphone system according to the present invention.

FIG. 8 shows a cordless infrared remote controller according to the present invention.
FIG. 9 is a block diagram illustrating a second example of the receiving unit of the microphone system.

FIG. 9 shows a cordless infrared remote controller according to the present invention.
It is a block diagram of a commander part of a microphone system.

FIG. 10 is a block diagram of a transmission / reception unit of the infrared cordless microphone system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiver main body 2, 2 'Infrared light receiving sensor 3 Infrared cordless microphone 3a Power on / off switch 3b Infrared remote control switch 3c Infrared light emitting element part 4 Karaoke equipment 4a Commander part 5 Singer T1 Microphone unit T2 Microphone amplifier T3 FM modulation part T4 LED Output amplifier T5 Infrared light emitting diode T6 Switch T7 Power supply T8 Carrier radiator R1 Photodiode R2 Photodiode amplifier R3 Band pass filter (BPF) R4 FM demodulator R5 Audio output amplifier R6 Output switching circuit R6A Audio output A R6B Audio output B R7 Carrier Detection circuit R8 Mode switching ternary counter TP1 Microphone unit TP2 Microphone amplifier TP3 FM modulator TP4 LED output amplifier TP5 Infrared light emitting diode T P6 switch TP7 key detection unit TP8 control code oscillation / modulation unit TP9 synthesis circuit RP1 photodiode RP2 photodiode amplifier RP3 band pass filter RP4 FM demodulation unit RP5 low pass filter RP6 audio output buffer amplifier RP8 control code reproduction circuit RP9 control code demodulation unit RP10 Voice conversion circuit

Claims (3)

[Claims] A microphone output switching unit and a remote control unit;
An infrared cordless microphone system comprising: an infrared cordless microphone provided with a control signal transmitting unit; and a receiver body having an infrared light receiving sensor and an output switching circuit. 2. A microphone power on / off switch according to claim 1, wherein the presence or absence of an infrared carrier is regarded as a microphone output switching signal, and a microphone power on / off switch having a microphone output switching function and a remote control signal transmission function is provided. Infrared cordless microphone system. 3. The infrared cordless microphone system according to claim 1, wherein a microphone output signal and a remote control signal are superimposed on the infrared carrier.