KR100371436B1 - Wireless headphone capable of selecting automatically or manually channel - Google Patents

Abstract

The present invention combines a wireless headphone with a multi-channel selection function capable of automatically selecting a frequency channel with a manual channel selection function for manually selecting an arbitrary channel available to a user, so that a carrier frequency channel of a wireless transmitter of an acoustic device The wireless headphone can be automatically or manually selected by the user so as to automatically or manually select the wireless headphone, so that the desired wireless headphone can simultaneously listen to the signal of the acoustic device transmitted from one wireless transmitter within an effective distance. In order to achieve this, the manual channel selector includes a manual channel selector switch for manually selecting a channel, and a selection channel signal generator for generating a signal for transmitting and receiving at the multichannel selector to a channel selected by the manual channel selector switch. Done, everything The channel selector of the channel selector automatically allocates a channel when there is no signal from the selection channel signal generator, and allocates a corresponding channel manually selected when there is a signal from the selection channel signal generator, and is allocated from the frequency controller. And a wireless transceiver for transmitting and receiving in a channel.

Description

Wireless headphones with automatic or manual channel selection {WIRELESS HEADPHONE CAPABLE OF SELECTING AUTOMATICALLY OR MANUALLY CHANNEL}

The present invention relates to a wireless headphone, and specifically, when only one wireless headphone is used in combination with a sound device, the signal of the sound device can be listened to through a channel automatically assigned by a multi-channel selection function. In addition, if several people want to use multiple wireless headphones to listen to the sound of the sound equipment at the same time, the rest of the sound is not paired with the sound equipment so that one wireless headphone paired with the sound equipment automatically matches the selected channel. The present invention relates to wireless headphones capable of automatically or manually selecting a channel for manually adjusting a channel of wireless headphones.

In listening to recent home audio devices such as audio component systems or portable audio devices such as MP3 and Walkman, wireless communication technology is applied to convert the signal from the audio device into wireless headphones or earphones (hereinafter referred to as "wireless headphones"). By allowing them to listen, they ensure maximum activity for their listeners.

Generally, various frequency bands can be used as a carrier wave used to transmit and receive signals between radio transceivers, but sound equipment or computer peripheral devices mainly use RF (radio frequency) or IrDA (infrared ray). Since the carrier frequency band that can be used for wireless transmission and reception is limited, the usable transmission / reception frequency band, that is, the number of channels is inevitably limited.

In addition, if a fixed transmission / reception frequency between wireless transceivers is specified and fixed, interference with other transceivers is more likely to occur. In particular, in the case of a portable audio device, it is likely that other acoustic devices are in close proximity to the transmission effective distance. This is also easy to occur.

To solve this problem, Multi Channel Adaptation (MCA) technology detects channels that are not in use by other transceivers within the effective distance and automatically adjusts channels. Many devices are widely used as a method of determining the transmission and reception channel frequency, which automatically avoids interference if the number of wireless transceivers within the effective distance is less than the number of available channels.

Therefore, in a wireless communication, a multi-channel selection technique for automatically allocating only one communication channel between a set of transmitting and receiving devices in order to avoid interference or interference between transmitting and receiving devices of the same frequency is applied to a device that uses only one device at the same time as a wireless telephone. It is suitable and widely applied.

However, if multi-channel selection technology is applied to a device that can listen to one device at the same time, such as an audio device, two or more people cannot listen at the same time because only one headphone can be used per audio device. There is a problem.

That is, when only one channel is automatically selected between a conventional sound device including one wireless transmitter as shown in FIG. 1 and a pair of wireless headphones, wirelessly transmitting and receiving a signal of the sound device.

The wireless headphones 200 and 300 used to listen to a signal of the acoustic device wirelessly from the acoustic device 100 including the wireless transmitter 110 are configured as follows.

In general, since the wireless headphones are used in combination with the wireless transmitter 120 of the audio device 100, the wireless transmitter 120 and the carrier frequency should be matched. If the carrier frequency channel is fixed to one, interference may occur. 120 and a multi-channel selector 210 and 310 for automatically avoiding interference by automatically selecting one channel among multiple transmit / receive channels and a single channel selected by the multi-channel selector 210 and 310. The wireless receiver 220 and 320 and the wireless receiver 220 and 320 to receive a carrier wave modulated signal of the acoustic device 100 transmitted from the wireless transmitter 120 of the acoustic device 100 through Detectors 230 and 330 for extracting a signal of an acoustic device from the carrier, and amplification units 240 and 340 for amplifying a signal of the audio device extracted from the detectors 230 and 330, and In the amplifier 240, 340 Speaker 250 and 350 for reproducing the signal of the amplified sound device. In the case of digital wireless headphones, a digital signal processor (not shown) is further included.

In the conventional wireless headphones having such a configuration, the multi-channel selector 210 or 310 automatically selects the wireless transmitter 120 and the carrier frequency channel of the acoustic device to form a pair of wireless headphones. Hereinafter, the wireless headphone (hereinafter referred to as "wireless headphone B") 300 which is not paired with an audio device other than "wireless headphone A" 200 is a channel of all wireless transceivers within an effective distance. Since it does not form a pair with the sound device even within the effective distance (short distance) from automatically setting differently, the wireless headphone B cannot hear the signal of the sound device 100 unlike the wireless headphone A.

From this, an object of the present application is to combine a wireless headphone with a multi-channel selection function that can automatically select a frequency channel with a manual channel selection function that allows a user to manually select any available channel. By allowing the user to automatically or manually select the carrier frequency channel of the user, the wireless headphone can be automatically or manually selected so that the desired wireless headphones can simultaneously listen to the signal of the acoustic device transmitted from one wireless transmitter within an effective distance. It is to provide wireless headphones.

1 is a block diagram illustrating a case where a signal of an audio device is wirelessly transmitted and received by automatically selecting only one channel between an acoustic device including one wireless transmitter and a pair of wireless headphones.

FIG. 2 is a diagram illustrating a channel identical to a channel for automatically selecting and transmitting a signal of an audio device wirelessly between an acoustic device including a wireless transmitter and a pair of wireless headphones according to an embodiment of the present disclosure. FIG. 1 is a block diagram illustrating a case where a user manually selects a pair of different wireless headphones to listen to a signal of one audio device at the same time.

FIG. 3 is a block diagram illustrating in detail the multi-channel selector and the manual channel selector for automatically or manually selecting channels in the wireless headphone of FIG. 2.

Figure 4 illustrates the operation of the wireless headphones capable of channel selection automatically or manually according to an embodiment of the present application.

*. Explanation of references to the main parts of the drawings

100: sound equipment

110: sound signal output unit

120: wireless transmission unit

200: conventional wireless headphones paired with sound equipment

210, 310, 410, 510: multi channel selector

220, 320, 420, 520: wireless receiver

230, 330, 430, 530: detector

240, 340, 440, 540: amplifier

250, 350, 450, 550: Speaker

300: conventional wireless headphones that do not pair with sound equipment

400: Wireless headphones of the present invention to form a pair of sound equipment

411, 511: frequency controller

412, 512: radio transceiver

460, 560: manual channel selector

461, 561: manual channel selector switch

462, 562: Select channel signal generator

470, 570: channel display unit

500: Wireless headphones of the present invention not paired with sound equipment

In order to achieve the above object, the wireless headphones capable of channel selection automatically or manually, which is the invention according to claim 1 of the present application,

Multi-channel selector that automatically selects only one communication channel between a set of radio transceivers to avoid interference or interference between radio transceivers of the same frequency, and radio of the audio device through one channel selected by the multi-channel selector. A wireless receiver for receiving a carrier modulated signal of the sound device transmitted from the transmitter, a detector for extracting a signal of the sound device from the carrier received by the radio receiver, and amplifying the signal of the sound device extracted by the detector A wireless headphone comprising an amplifying unit and a speaker for reproducing a signal of an audio device amplified by the amplifying unit,

And a manual channel selector connected to the multi-channel selector to allow a user to manually select a desired channel.

In addition, the wireless headphones capable of channel selection automatically or manually according to the invention according to claim 2,

The method of claim 1,

The manual channel selection unit includes a manual channel selection switch for manually selecting a channel, and a selection channel signal generator for generating a signal for transmitting / receiving from the multi-channel selection unit to a channel selected by the manual channel selection switch,

The multi-channel selector assigns a channel automatically when there is no signal from the select channel signal generator, and assigns a corresponding channel manually selected when there is a signal from the select channel signal generator, and assigns the channel from the frequency controller. It consists of a wireless transceiver for transmitting and receiving on the channel.

According to the wireless headphones capable of automatically or manually selecting channels according to the above-described claims 1 and 2 of the present application, not only can the signal of the acoustic device be listened to by the automatically assigned channel, but also the automatic It is also possible to manually select the same channel as the channel assigned to the unit so that several people can simultaneously listen to the same audio device.

In addition, the wireless headphones capable of channel selection automatically or manually according to claim 3 of the present application,

The method according to claim 1 or 2,

And a channel display unit for displaying the channel selected by the multi-channel selector.

According to the wireless headphones capable of automatically or manually selecting a channel according to the above-described claim 3 of the present application, the channel selected by the multi-channel selection unit is displayed on the acoustic device or the wireless headphone including the wireless transmission unit to display the currently selected channel. Make it easy to see.

Hereinafter, with reference to the accompanying drawings, a wireless headphone 400, 500 capable of channel selection automatically or manually of the present application.

FIG. 2 automatically selects a signal of an acoustic device between a sound device 100 including a wireless transmitter and a plurality of wireless headphones 400 and 500 according to an embodiment of the present disclosure. FIG. 1 is a block diagram illustrating a case in which the same channel as a channel to be transmitted / received wirelessly is manually selected by another wireless headphone 500 so that a signal of one acoustic device can be simultaneously listened to.

The signal of the acoustic device 100 including the wireless transmitter 120 is transmitted by the multi-channel selector 410 of the wireless headphone (hereinafter referred to as "wireless headphone C") 400 which is paired with the acoustic device. A wireless headphone (hereinafter referred to as "wireless headphone D") 500 which does not form a pair with a sound device other than the wireless headphone C 400 by automatically selecting a carrier frequency channel with the wireless transmitter 120 of the acoustic device 500 Does not form a pair with the sound device even within the effective distance, unlike the wireless headphone C 400, the wireless headphone C 400 may not be able to hear a signal from the sound device 100.

In this case, the wireless headphone D 500 is automatically turned on by the wireless headphone C 400 through the multi-channel selector 510 and the manual channel selector 560 as shown in FIG. 3. Manually select a channel the same as the selected and assigned channel.

First, in the manual channel selection unit 560, the manual channel selection switch 561 is selected from the wireless headphone C 400 by mechanical driving such as a rotary knob or a push button from the outside of the wireless headphone D 500. Manually adjust and select the channel.

The channel selected by the manual channel selection switch 561 is sent to the selection channel signal generator 562, and the radio transceiver of the multi-channel selection unit 510 is generated by a signal generated from the selection channel signal generator 562. Causes 512 to generate the signal required by frequency controller 511 to use the assigned channel.

Next, the frequency controller 511 of the multi-channel selector 510 automatically allocates a channel when there is no signal from the selection channel signal generator 562, and there is a signal from the selection channel signal generator 562. In this case, the channel frequency of the radio transceiver 512 is controlled by setting a frequency channel of a phase-locked loop (PLL) to allocate a corresponding channel selected manually.

The radio transceiver 512 wirelessly transmits and receives through an assigned channel from the frequency controller 511.

From this, the manual channel selector 560 is connected to the multi-channel selector 510 and has a function of adjusting a channel with a wireless transmitter of the acoustic device so that a user can use a desired channel.

In addition, the channel display unit 570 as shown in FIG. 2 is used to display a channel (usually a channel number) used between the acoustic device and the wireless headphone C 400. When the wireless headphone C 400 is in use, the wireless headphone D 500 that wants to listen to a signal from the same sound device at the same time may refer to the channel displayed on the channel display unit 570 to determine the wireless headphone C 400 that is using the channel. Can match the channel. The channel display unit 570 may be installed in the wireless headphone C 400 or the wireless headphone D 500. The channel display unit 570 may be installed anywhere according to the user's convenience, such as an audio device, and the design of the device.

Figure 4 illustrates the operation of the wireless headphones capable of channel selection automatically or manually according to an embodiment of the present application.

First, when the acoustic device 100 including the wireless transmitter 120 and the wireless headphone C 400 are operated, the multi-channel selector 410 detects a carrier and automatically performs a channel selection process to transmit and receive channels N. Is selected.

When the multi-channel selector 410 selects an appropriate channel that is not used by other radio transceivers within the effective distance, the wireless headphone C 400 pairs with the acoustic device 100 afterwards. The channel used between 100) and the wireless headphone C 400 is fixed to N.

Since the automatic channel selection process operates according to the principle of preemption, the wireless headphone C 400 is used even when an acoustic device including another wireless transmitter comes within an effective distance while using the wireless headphone C 400. Since the channel N is not available, once the channel is fixed, if the number of other sound devices including the radio transmitter is larger than the number of available channels, or if the current channel is not available due to interference, channel change or interference may occur. The problem does not occur.

After the transmission / reception channel is fixed to N, the signal is transmitted between the acoustic device 100 and the wireless headphone C 400 using the corresponding channel, thereby operating in the same manner as the conventional wireless headphone A. FIG.

At this time, the channel display unit 470 displays the channel number N currently being used by the wireless headphone C 400 that is a pair with the acoustic apparatus 100.

When the wireless headphone D 500 within the effective distance wants to simultaneously listen to the signal of the audio device that the wireless headphone C 400 is listening to, the passive channel of the manual channel selector 560 of the wireless headphone D 500. Operation of the selector switch 561 stops the function of automatically selecting a channel and manually selects the channel number N.

In the embodiment of the present application, when the manual channel selection switch 561 does not operate, it is operated to have only the automatic selection channel function.

In order to select a channel, the user of the wireless headphone D 500 first checks the channel number N used by the wireless headphone C 400 from the channel display unit 470.

Check the channel number N and manually adjust the manual channel selection switch 561 of the wireless headphone D 500 to match the channel number to N so as to be the same channel as the wireless headphone C 400.

When the channel is matched to N, the signal from the sound equipment can be listened to simultaneously at the wireless headphone C 400 and the wireless headphone D 500, which can be operated in the same process even when the number of wireless headphones within the effective distance is increased. have.

Listening is terminated when the wireless headphone D 500 is out of the effective distance, manually changed to another channel, or the operation of the wireless headphone D 500 is stopped.

Although the present invention has been described above based on examples, these examples are intended to illustrate the present invention without restricting the invention, and various modifications are made within the scope of the technical idea intended by the present invention to those skilled in the art. As the modifications can be made to, the protection scope of the present invention will be defined only by the appended claims.

As described above, the wireless headphones capable of selecting a channel automatically or manually according to the present invention may be manufactured separately by a frequency channel by adding a manual channel selection method to a conventional single channel or automatic channel selection wireless headphones. Instead of having to replenish, wireless channels can be easily tuned to match the channels of other headphones in a pair with the audio device, allowing two or more wireless headphones to be shared at the same time.

Claims (3)

Multi-channel selector that automatically selects only one communication channel between a set of radio transceivers to avoid interference or interference between radio transceivers of the same frequency, and radio of the audio device through one channel selected by the multi-channel selector. A wireless receiver for receiving a carrier modulated signal of the sound device transmitted from the transmitter, a detector for extracting a signal of the sound device from the carrier received by the radio receiver, and amplifying the signal of the sound device extracted by the detector A wireless headphone comprising an amplifying unit and a speaker for reproducing a signal of an audio device amplified by the amplifying unit, And a manual channel selector connected to the multi-channel selector to allow a user to manually select a desired channel. The method of claim 1, The manual channel selection unit includes a manual channel selection switch for manually selecting a channel, and a selection channel signal generator for generating a signal for transmitting / receiving a signal to be transmitted and received by the multi-channel selection unit to a channel selected by the manual channel selection switch, The multi-channel selector assigns a channel automatically when there is no signal from the select channel signal generator, and assigns a corresponding channel manually selected when there is a signal from the select channel signal generator, and assigns the channel from the frequency controller. Wireless headphones capable of selecting a channel automatically or manually characterized in that the wireless transceiver for transmitting and receiving in the channel. The method according to claim 1 or 2, And a channel display unit for displaying the channel selected by the multi-channel selection unit.