JPH0576066A - Infrared ray wireless microphone - Google Patents

Abstract

PURPOSE:To provide a wireless microphone system which meets the needs by enabling long-distance transmission in an open room, preventing interference with similar system used in the next room, etc., and controlling equipments on the reception side. CONSTITUTION:A microphone part 1 which converts a voice sound into a sound electric signal, a remote control signal generating part 4 which generates the electric signal corresponding to the infrared ray remote control code corresponding to respective functions of the equipments constituting a receiving system while corresponding to a frequency modulator 2 which modulates a carrier wave by using the sound electric signal and switches 3a-3b, a multiple circuit 5 which frequency-multiplexes the signal subjected to the modulation as started and a remote control signal and a light emitting part 6 which converts the multiplexed electric signal into an infrared ray signal are provided. Thus, a sound signal is transmitted by using an infrared ray and the remote control signal for equipments can be transmitted with the same infrared ray.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless microphone used for wireless transmission of voice.

[0002]

2. Description of the Related Art In recent years, wireless devices have been increasingly used,
A wide variety of wireless devices have been developed. Due to its nature, microphones are also strongly required to be wireless, and those that use FM radio waves for transmission have been put into practical use.

Here, an example of a conventional wireless microphone using FM radio waves will be described with reference to the drawings.

FIG. 2 is a block diagram of an example of a conventional wireless microphone using FM radio waves. In FIG. 2, reference numeral 7 is a microphone unit for converting voice into a voice electric signal, 8 is a frequency modulator for frequency-modulating a carrier wave with the voice electric signal, and 9 is an antenna for radiating the modulated signal.

Now, consider the case where voice is input to the microphone unit 7. At this time, the microphone unit 7 outputs an audio electrical signal having a size corresponding to the input audio. The carrier wave is frequency-modulated by the frequency modulator 8 using this audio electric signal as a modulation signal, and this output signal is radiated by the antenna 9.

On the receiving side, the FM electric wave is demodulated to obtain a voice electric signal.

[0007]

However, in the case of the FM wireless microphone having the above-described structure, there may be a problem due to restrictions such as the Radio Law and interference and interference depending on the environment in which it is used. For example, when used in a so-called karaoke system, there was a problem that the transmission distance was insufficient, or interference with a wireless microphone of an adjacent system occurred.

On the other hand, the use of wireless remote control for video / audio equipment (abbreviated as AV equipment) is generally widespread, and there is a case where the AV equipment on the receiving side is operated by the wireless remote control while using the wireless microphone. Sometimes. For example, in a karaoke system, it is possible to use a wireless remote controller for home and business use, but at this time, while using a wireless microphone, the pitch of music, the balance between music and one's own voice, volume, or echo. There is a very great need to control the effectiveness of the song so that it can be sung easily. At this time, a very complicated operation of holding the wireless microphone in one hand and the wireless remote controller in the other hand to operate is now required.

An object of the present invention is to eliminate such problems and provide a wireless microphone in a form more suitable for the usage environment.

[0010]

In order to achieve this object, the infrared wireless microphone of the present invention comprises means for converting a voice into an electric sound signal, means for modulating the sound electric signal, and a plurality of switches. , A means for generating a remote control electric signal according to the state of this switch, a means for multiplexing a sound electric signal and a remote control electric signal, and a means for converting the multiplexed electric signal into an infrared signal, It is possible to use the same infrared ray to transmit the remote control signal of the device while transmitting the signal.

[0011]

With this configuration, the infrared wireless microphone of the present invention enables long-distance transmission indoors where visibility is good,
It is possible to prevent interference with a similar system in an adjacent room or the like and control a device on the receiving side, thereby realizing a wireless microphone system that meets needs.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a wireless microphone according to the present invention. Reference numeral 1 is a microphone unit for converting voice into an electric voice signal, 2 is a frequency modulator for modulating a carrier wave with the electric voice signal, 3a, 3b, 3c and 3d are switches, which are "pitch up", "pitch down" and "pitch down", respectively. Balance (increasing microphone) "and" balance (increasing accompaniment) ". Reference numeral 4 denotes a remote control signal generation unit that corresponds to the switches 3a to 3d and generates an electric signal corresponding to an infrared remote control code corresponding to each function of the receiving-side system component device. Is a multiplexing circuit for frequency multiplexing, and 6 is a light emitting unit for converting the multiplexed electrical signal into an infrared signal.

When a voice is input to the microphone unit 1, a voice electric signal corresponding to the input voice is output, and the frequency modulator 2 frequency-modulates the carrier by the voice electric signal. On the other hand, when any of the switches 3a to 3d is closed, the remote control signal generator 4 generates a remote control signal corresponding to the switch. The output signal of the frequency modulator 2 and the output signal of the remote control signal generation unit 4 are frequency-multiplexed by the multiplexing circuit 5, converted into infrared rays by the light emitting unit 6, and transmitted.

On the receiving side, the wireless microphone receiving section or the remote control light receiving section of each system component receives and demodulates the infrared signal to obtain a voice electric signal and receive control.

Consider a case where the infrared wireless microphone of this embodiment is applied to a karaoke system. The user can sing anywhere with the wireless microphone. At this time, if the user feels that the pitch should be lower, the remote controller signal for pitch up can be transmitted by the switch 3a. Further, if the user feels that "more accompaniment is better", it is possible to transmit a remote control signal of balance (increasing accompaniment) by the switch 3d to adjust the desired environment and sing.

When used in a karaoke system, it is unlikely to use it in a place where visibility is not effective, such as in an adjacent room, and since the transmission distance requires a relatively long distance, a wireless microphone using infrared rays is very useful. Can be said to be suitable.

[0018]

INDUSTRIAL APPLICABILITY As described above, the infrared wireless microphone of the present invention enables long-distance transmission in a room with a clear line of sight, prevents interference with a similar system in an adjacent room or the like, and prevents the reception side device from being interfered with. It can also be controlled and realizes a wireless microphone system that meets the needs, and its practical effects are extremely large.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an infrared wireless microphone according to the present invention.

FIG. 2 is a block diagram of an example of a conventional wireless microphone.

[Explanation of symbols]

 1 Microphone section 2 Frequency modulation circuit 3 Switch 4 Remote control signal generation section 5 Multiplexing circuit 6 Light emitting section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location H04B 10/22 H04Q 9/00 311 U 7170-5K H04R 1/04 B 8946-5H

Claims (1)

[Claims] 1. A means for converting voice into a voice electric signal, a means for modulating the voice electric signal, a plurality of switches, a means for generating a remote control electric signal according to the states of the switches, and the voice electric signal. It is composed of a means for multiplexing the remote control electric signal and a means for converting the electric signal multiplexed by the means into an infrared signal, and transmits a voice signal using the infrared ray and transmits the remote control signal of the equipment to the same infrared ray. Infrared wireless microphone characterized by transmitting using.