JPS60198995A - Wireless earphone - Google Patents

Abstract

PURPOSE:To attain behavior while mounting an earphone on the ear by adding a small sized receiver to a TV or a radio set, superimposing sound of TV to a transmission wave and demodulating a radio wave by an ear mount receiver so as to listen to the sound by the earphone. CONSTITUTION:In inserting an earphone plug 3 to an earphone jack 2 of a TV1, the sound transmission of the TV speaker is interrupted and an electric signal obtained from the plug 3 is inputted to a small sized transmitter 4. The transmitter 4 transmits the radio wave modulated by a sound signal from an antenna 5. The small sized receiver 6 receiving and demodulating the transmission wave through tuning is provided with the earphone 7 and a person carrying the receiver 6 can be have himself freely with the earphone 7 mounted on the ear 8 while listening the TV sound.

Description

[Detailed description of the invention] TECHNICAL FIELD The present invention relates to earphones.

Conventional televisions, radios, stereos, etc. are generally equipped with an earphone jack or headphone jack, and if necessary, the earphone plug is fully inserted and the speaker is turned on to listen without leaking the sound to the outside.

Earphones or handphones are indispensable equipment, especially for families living with children who are listening to Hoya Broadcasting or studying for entrance exams.

However, since conventional earphones connect the TV or radio to the earphones near the ear using a conductive wire, the range of movement while listening to the earphones is extremely limited and the operation is also inconvenient. there were. Furthermore, there are various inconveniences, such as not only the trouble of having to take the earphones out of one's ears every time one moves away from the television or radio for a minor errand, but also the interruption of listening to the broadcast.

The present invention has been made in view of the above circumstances, and it adds a small-scale transmitter to a television, radio, etc., superimposes the entire sound of the television, etc. on this transmitted wave, and simultaneously receives and demodulates all of the transmitted wave. To provide wireless earphones in which each person carries a receiver and listens through earphones.

The present invention will be described in detail below based on illustrated embodiments.

FIG. 1 is a schematic diagram illustrating the invention in detail.

In the figure, 1 is a television, and by inserting an earphone plug 3 into this earphone jack 2, sound is transmitted from all the speakers of the television, and electricity is obtained from this plug.

The signal is input to the modulation circuit of the small-scale transmitter i 4, and the @ wave modulated with this audio signal is sent out from the antenna 5. On the other hand, a small receiver 6 that tunes to and demodulates the transmitted waves is equipped with earphones, and a person carrying the small receiver 6 listens to the television sound using the earphones.

1. As a small transmitter attached to the side of a television etc. used in the present invention, there is already a small transmitter commercially available for other purposes, such as transmitting stereo sound to another radio. Alternatively, it may be built into a television or the like from the beginning for the entire purpose of using the present invention.

FM waves are generally used as the communication medium for these small transmitters, and it is sufficient for the radio waves to reach a small area, for example, one room in a house.

In particular, it can be easily used by using weak radio waves that do not require a radio station license; however, the present invention does not need to be limited to those that use such radio waves; for example, an electromagnetic induction method using relatively low frequencies may be used. It is obvious that an ultrasonic method may also be used.

Also, with recent advanced electronics technology, it is easy to make extremely small receivers, so it would be even more convenient if the receiver according to the present invention was made into an earphone type receiver that can be hung directly on the ear. .

The invention is thus a small receiver that transmits the audio of a television, radio, or stereo device using a small transmitter and receives it.
Since it is portable and allows you to listen to the demodulated sound through earphones, there is no need to run cables like in the past, and you can move around freely while listening to earphones, eliminating all of the drawbacks of conventional earphones. It is highly effective in increasing the utility value of televisions, etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating the invention in detail. 1...TV etc., 2A...Earphone jack, 3...Plug. ４・・・・・・・・・Small transmitter, ５・・・・・・・・・
·antenna. 6・・・・・・・・・Small receiver, 7・・・・・・・・・
・Earphone 8・・・・・・Ear. Patent applicant: Toyo Tsushinki Co., Ltd.

Claims (1)

[Claims] A small transmitter is attached to a device to which an earphone is attached, such as a television, radio, or stereo amplifier, and the sound of the device is used as a modulation signal for the transmitter. Wireless earphone 7° characterized by receiving and demodulating the sound in a receiver and listening to the sound through the earphone.