DESCRIPTION JP3019801

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DESCRIPTION JP3019801
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
television receiver provided with an amplifier circuit dedicated to a headphone.
[0002]
2. Description of the Related Art Conventionally, a television has a headphone terminal, but when
a plug of the headphone is inserted, the speaker sound of the television disappears.
[0003]
[0003] This has had the following disadvantages.
When several people try to watch the same TV in a family, for example (a) The sound of the
speaker will reach anyone's ear uniformly, so even if there is a person with hearing loss, make
the volume act only on that person I can not do it. (B) Television bilingual (voice multiplex)
broadcasting has also increased, but it is difficult to play bilinguals from the same speaker and
distinguish each one. The present invention is made to solve these drawbacks.
[0004]
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A television receiver is provided with a volume (1), an amplifier (2) and a headphone terminal (3)
after an audio detection and amplification circuit (6). The present invention is a television
receiver provided with an amplifier circuit dedicated to a headphone having the above
configuration.
[0005]
[Operation] When the power switch of the television receiver is turned on and a commercially
available headphone is connected to the headphone terminal (3) of the present invention, the
same television program from the headphone is not erased without the sound of the speaker of
the television receiver. Can be heard regardless of the volume of the speakers.
[0006]
EXAMPLES Examples of the present invention will be described below.
A volume (1), an amplifier (2) and a headphone terminal (3) are provided after the voice
detection and amplification circuit (6). The present invention has a structure as described above,
and when using it, a commercially available headphone is connected to the headphone terminal
(3), and the volume (1) is adjusted to an appropriate volume to obtain a television receiver The
same television program can be heard from the headphones without muting the speakers.
Moreover, since the volume dedicated to the headphone is provided, the volume can be made
independent of the speaker. Also, if the headphone is a stereo headphone with a selector switch
for the primary voice and the secondary voice, it is possible to hear another voice than the
speaker of the television. By using the switching relay (4) as shown in FIG. 2, the headphone
terminal of the present invention and the conventional headphone terminal may be combined.
That is, the switching relay (4) may make the speaker sound disappear and not disappear.
Further, as shown in FIG. 3, the headphone circuit portion may be deleted from the conventional
circuit, and when it is desired to extinguish the speaker sound, the volume for the speaker may
be minimized or the muffling relay (9) may be operated. Also, the volume (1) and the amplifier
(2) of the circuit may be switched in the order.
[0007]
Effect of the Invention (A) Regardless of the volume of the speaker, it is possible to provide a deaf
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person, for example, an old man, with the necessary volume through the headphone, so that it is
possible to make a family surrounded by the same television. (B) For example, in a bilingual
broadcast program such as a television movie, a person who listens to Japanese through a
speaker and a person who listens to a foreign language from a headphone can simultaneously
enjoy it.
[0008]
Brief description of the drawings
[0009]
1 is an explanatory view of the present invention.
[0010]
2 is an explanatory view showing another embodiment of the present invention.
[0011]
Explanation of sign
[0012]
Reference Signs List 1 volume 2 amplifier 3 headphone terminal 4 switching relay 5 headphone
dedicated amplifier circuit 6 detection amplifier circuit 7 conventional audio amplification circuit
8 speaker 9 mute relay
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