JPH0511559U - Headphone device - Google Patents

Abstract

(57) [Summary] [Purpose] The sound and music output from TVs, stereo devices, etc. are transmitted from the headphone terminal and received and reproduced by wireless headphones. At this time, a plurality of people can listen to different voice music in the same room or the like. [Configuration] A headphone terminal, a transmission means for transmitting an audio signal input from this terminal, and a mode switching means for switching a transmission signal mode such as a frequency are provided in a transmission side device, while a receiving means and a frequency of a transmission signal ( Or, the receiving side device is provided with a tuning circuit for switching and tuning to the signal format) and a reproducing means for reproducing the tuned audio signal.

Description

[Detailed description of the device]       [0001]     [Industrial applications]   The present invention relates to a headphone device used for a stereo device, etc. The present invention relates to a headphone device that transmits and receives by a method.       [0002]     [Prior Art]   Headphone device that sends and receives audio output such as stereo by so-called wireless system Conventionally, as shown in FIG. 5, an antenna device 3 is attached to the rear output terminal of the stereo device 1. Is connected by wiring 4, and the output signal of the reproduction circuit is oscillated from the antenna device 3 and received. The headphone device 6 including the circuit 5 is adapted to receive.       [0003]   Further, in the case of an AV device without such an oscillating means, the rear output of an amplifier device or the like is used. A so-called FM transmitter device is connected to the terminal. This FM transmitter As shown in FIG. 6, the device 6 connects the signal line 9 to the rear output terminal 8 of each AV device 7. The radio signal is transmitted from the antenna 10 to the voice signal input from the signal line 9. Yes, the reception of the transmitted radio wave is performed by another FM tuner device 11. . When the audio signal is auditioned with the headphones 12, the FM tuner device 1 Insert the headphone terminal 15 into the headphone terminal 14 of No. 1 and re-receive the received voice. We will listen live.       [0004]   On the other hand, recent advances in integrated circuit technology have simplified the circuit configuration on the receiving side. Various small-sized and high-performance receivers have been proposed. FIG. 7 shows a headphone device A so-called headphone that incorporates a circuit that can directly receive and reproduce FM radio signals 1 shows an example of a mobile radio. In the figure, 16 is a headphone main body, 17 is The speaker unit, 18 is a reception / reproduction circuit. The reception / reproduction circuit 18 itself Functions as a radio, FM antenna loading coil 20, external antenna Terminal 21, signal reproduction IC chip 22, music selection volume switch section 23, display section 24, etc. Prepare       [0005]   Watches with AM / FM radios that are smaller than headphone radios Is also well known in the art and uses stereo earphones to receive stereo broadcasts. For example, on the receiving side, the device is further miniaturized. Arm with radio like this The structure of the watch is basically the same as that of the headphone radio, but it has a smaller size. In order to use a power supply battery as a silver oxide battery and to have an earphone jack terminal, Improvements have been added.       [0006]     [Problems to be solved by the device]   By the way, the conventional signal wiring was an obstacle for wireless headphone devices. As a result, distance restrictions due to wiring were liberalized and the trouble of wiring code was eliminated. However, the conventional headphone device has a limited number of models. Or the FM signal that can be received by the headphone device is limited, etc. There is a problem that the freedom is not realized.       [0007]   In other words, since the wireless headphone device has restrictions such as the Radio Law, The radio waves transmitted from the device are suppressed to the extent that they can be received indoors at most. . The current regulations require a weak current of 15 μV / m or less at a distance of 100 m. It is required. In this case, the conventional headphone device is The number and the reception frequency on the headphone side are preset to avoid signal interference For example, even if it is the same model as the adjacent house, signal interference will occur if the device is different. It does not come.       [0008]   However, in such a conventional headphone device, the transmission / reception frequency is preset. Audio signals from other models such as existing TVs and additional CD devices. I cannot freely send and receive. Also, the FM transmitter device is not compatible with other models. Signals can be sent freely to the device, but this device requires an FM tuner device on the receiving side Therefore, it is possible to hear the audio signal with normal headphones without a wiring cord. Can not. In addition, a wireless headphone that allows you to hear audio signals directly from FM stations. When listening to radio, listen to audio signals from home CD devices, video devices, etc. Cannot be selected, and free signal selection cannot be performed.       [0009]   Therefore, the purpose of the present invention is to make it possible to freely use any model in the home area. When transmitting audio signals and listening with wireless headphones, multiple types of audio signals The point is to be able to choose freely without interference.       [0010]     [Means for Solving the Problems]   In order to achieve the above object and the task, the headphone device according to the present invention is You can insert the headphone jack that can be inserted into the audio signal output terminal and play the input audio signal. The headphone device provided with a reproducing means for The terminal is a signal modulating means for modulating the signal input from the audio output terminal, and the signal modulating means. Switch means for selecting a modulation waveform mode in the means and the selected modulation mode From the antenna means that oscillates and outputs the audio signal by The audio signal transmitting means, and the reproducing means is oscillated from the audio signal transmitting means. Sound signal receiving means for receiving the received signal and tuning by selecting the modulation mode of the received signal And a signal demodulating means for demodulating the output of the selective tuning means. Audio signal receiving means.       [0011]     [Action]   The headphone device according to the present invention has audio signal transmitting means on the headphone terminal side. Since it is equipped with audio signals from existing TVs, radio devices, etc., directly under weak power. You can make a call from the antenna. At this time, the signal modulation means is selected by the switch means. The input audio signal is modulated according to the modulated waveform mode. The modulation method is Iwayu A / D conversion and pulse width modulation of the input signal in addition to FM modulation and frequency modulation Various methods such as pulse amplitude modulation, pulse phase position modulation, pulse code modulation can be used. It For indoor wireless devices, the antenna must be kept short to keep the device compact Therefore, it emits light in the high frequency and short wavelength band, especially in the range from below the FM wave to infrared light. Shake.       [0012]   On the other hand, on the reproducing means side, a receiver for demodulating the audio signal transmitted in this way is provided. Since the step is provided, it is possible to listen to the output sound of various AV devices at a remote position. become. At this time, the signal mode to be received is designated by the selective tuning means. This This may be signal type designation or frequency selection. Oscillation side If the tuning circuit on the receiving side is set according to the signal mode, a simpler circuit configuration is made. You can For example, if sending and receiving are limited to FM signals, the receiving side It is sufficient to configure only the switching circuit.       [0013]   Therefore, insert the headphone terminal on the oscillation side into the audio output terminal of any AV device. If this is the case, it is possible to listen to the audio and music of the AV device at a remote location using the receiving headphones. You can Multiple people with different audio signals in the same room or the same house Even when oscillating, the signal mode on the transmitting side is changed by the switch means, Interference due to mutual signals does not occur if the receiving side also matches the signal mode . [0014]     【Example】   An embodiment of the present invention will be described below with reference to the accompanying drawings.   The headphone device according to the present invention has an appearance configuration as shown in FIG. 2, for example. In other words, it basically comprises a transmitting side device 30 and a receiving side device 41. Originator here The device 30 includes a headphone terminal 31, a signal processing circuit, and an antenna. The transmitter 32 and the channel 33 for switching and setting the signal frequency are provided. The receiving side device 41 includes a receiving unit 42 having a built-in antenna and a signal processing circuit, A live speaker unit 43 and a hanger cap 49 are provided.       [0015]   FIG. 1 shows an example of the internal configuration of the transmission unit 32 and the reception unit 42.   The transmitter 32 is a signal modulation circuit that modulates the signal input from the headphone terminal 31. The signal modulating circuit 34 is provided with a path 34. , The frequency at that time is set by switching by the channel 33. It The channel 33 has a mechanical contact terminal (moving contact) to connect a resistor array or the like. The resistance value of the switching signal modulation circuit 34 may be changed, but more simply Drive the varicap in the IC circuit by using the digital switch to convert the frequency. Is also good.       [0016]   Also, in order to facilitate miniaturization of the antenna 35, the transmission frequency should be as high as possible. However, it is desirable to do it in the infrared band (shorter wavelength), but the frequency is higher. If it is too large, it will be difficult to reproduce the voice for both transmission and reception. It is optimal to use it to simplify the circuit configuration. For use in indoor areas The antenna 35 is, for example, as shown in FIG. It suffices to use an oscillation coil with a longitudinal dimension of about 9 mm in which the metal wire 36 is wound about 7 times. Yes. The output of the signal modulation circuit 34 is sent to the receiving device 41 by the antenna 35. It       [0017]   Here, the power source of the oscillator 32 is a small size such as a silver oxide battery lithium battery, and the voltage is low. A so-called button battery can be used. Can all circuits be driven with a voltage of about 1.5V? It is. Of course, the size is slightly larger than button batteries, but the size of AAA, AAA, etc. It may be a conventional battery. However, if you only use it in a normal room, By storing the DC component of the applied audio signal in the capacitor in the IC circuit The external battery can be eliminated. In that case, at least 110mW (preferably The headphone terminal is an audio output terminal that can output about 5 times 0.5W) The condition is that 31 is connected.       [0018]   On the other hand, the receiver 42 receives the signal oscillated and transmitted from the antenna 35 of the oscillator 32. Selection for tuning by tuning the received voice signal receiving circuit 44 and the modulation mode of the received signal A tuning circuit 45 and a signal demodulating circuit 46 for demodulating the output of the selective tuning circuit 45 are provided. Get In such a configuration, parts other than the selective tuning circuit 45 are conventional headphones. The basic structure is the same as the radio. The selective tuning circuit 45 is a circuit on the oscillation side device side 30. It is tuned to the wave number and receives the broadcast waves transmitted from ordinary radio stations. You don't necessarily need to be in agreement. The selective tuning circuit 45 is a It may be the same as the tuner dial in a diffon radio, but at least Also has a frequency range capable of receiving the radio waves transmitted from the transmission side device 30. Also, the calling side When the device 30 performs pulse modulation or the like, a mode changeover switch is required accordingly. It will be important.       [0019]   Therefore, according to such a headphone device, the headphone end of the oscillation side device 30 is Inserting the child 31 into the audio output terminal of any AV device such as a television or a CD device From the speaker unit 43 of the receiving side device 41, the audio music of the AV device is released. You can listen to it in a different position. Multiple people in the same room or house Even when oscillating different audio signals, the signal mode of the originating device 30 is The signal is also set by the channel 33 and the receiving side device 41 is also set by the selective tuning circuit 44. If they are set according to the mode (or frequency), there will be no interference due to mutual signals. As a result, each person can freely enjoy voice music in the same room or the same house. I can.       [0020]   FIG. 4 shows an amplifier device 50 having a plurality of output terminals 51 to 55, and a plurality of oscillator devices. The example in which the units 61 to 65 are mounted is shown. This amplifier device 50 is, for example, a country It is used to input signals for simultaneous interpretation at an international conference, etc. for each language. 61 to 65 can transmit audio signals for each language by setting channels 71 to 75. You can With this system configuration, channel switching is performed on the receiving device 90 side. By this, it becomes possible to receive and listen to an interpreter of any national language. Many people come to the same venue Even if you are seated, you can set an appropriate interpreter voice depending on the channel setting of your receiving device. Can be selected. In this case, the reception channel according to the number of channels on the calling side It goes without saying that the reception side device 90 is provided with the channel number.       [0021]   It should be noted that the headphone device according to the present invention is not necessarily a so-called headphone terminal type. It does not require a receiver, but the terminal and transmitter are designed independently, and both are connected by wiring. It doesn't matter. In that case, the transmitter may have a larger size than that of the above embodiment. That is why.       [0022]     [Effect of the device]   As described above, the headphone device according to the present invention is connected to the headphone terminal side. The audio signal transmitting means is provided, while the reproducing means receives and demodulates the audio signal. Since the communication means is provided, the audio signals of existing TVs, radio devices, etc. You can send under the power of your hands and listen directly to and listen wirelessly. Therefore , If you insert the headphone terminal on the oscillation side into the audio output terminal of any AV device, It is possible to listen to the audio and music of the AV device at a remote location using the headphone of the receiving side. In the same room or the same house, multiple people each emit different audio signals. Even when shaking, the signal mode of the transmitting side is changed by the switch means and the signal is received. If the side also adjusts to that signal mode, each person will not interfere with each other's signals You can freely enjoy voice music.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an example of a headphone device according to the present invention. FIG. 2 is a perspective view showing an external configuration example of a headphone device according to the present invention. FIG. 3 is a perspective view showing an example of an FM oscillating antenna applied to the present invention. FIG. 4 is a perspective view showing an example of a voice transmitting device according to the present invention. FIG. 5 is a diagram showing an example of a conventional wireless stereo. FIG. 6 is a diagram showing an example of use of a conventional FM transmitter device. FIG. 7 is a diagram showing an example of a conventional wireless headphone radio. [Explanation of Codes] 30 Source Device 31 Headphone Terminal 32 Transmitter 33 Channel 34 Signal Modulation Circuit 35 Antenna 41 Receiver Device 42 Receiver 43 Speaker Unit 44 Voice Signal Receiver Circuit 45 Selection Tuning Circuit

Claims (1)

[Claims for utility model registration] In a headphone device comprising a headphone terminal which can be inserted into an audio signal output terminal and a reproducing means for reproducing an inputted audio signal, the headphone terminal modulates a signal inputted from the audio output terminal. Audio signal transmitting means including signal modulating means, switch means for selecting a modulation waveform mode in the signal modulating means, and antenna means for oscillating and transmitting an audio signal according to the selected modulation mode under weak power of a predetermined value or less. The reproducing means includes an audio signal receiving means for receiving a signal oscillated from the audio signal transmitting means, a selective tuning means for selecting and tuning a modulation mode of the received signal, and an output of the selective tuning means. A headphone device, comprising: an audio signal receiving means including a signal demodulating means for demodulating.