WO1983003181A1

WO1983003181A1 - Electroacoustic converter

Info

Publication number: WO1983003181A1
Application number: PCT/JP1982/000065
Authority: WO
Inventors: Corporation Sony
Original assignee: Morita, Masaaki; Maruoka, Kouji
Priority date: 1982-03-09
Filing date: 1982-03-09
Publication date: 1983-09-15

Abstract

An electroacoustic converter using an earphone or a headphone (31). A control unit (35) is provided in a connecting cord (36) between a connecting plug (37) inserted into the body of the acoustic equipment and the headphone (31) or the like to provide control information to the equipment body through the cord (36), thereby remotely controlling the acoustic equipment.

Description

TECHNICAL FIELD The present invention relates to an electro-acoustic conversion device such as a headphone horn or the like, and more particularly to the above-described headphone horn or the like. In the middle of the connection code that connects the housing and headphone jack, for example, power supply of the audio equipment Ο Ν · OFF Switch and switch the channel remotely. It is related to the one in which the console operation unit is provided. Normally, in order to listen using a headphone, the plug provided at the end of the connection cord drawn out from the headphone housing is installed on the outer casing of the audio equipment. The headphone and audio equipment are connected to the headphone jack for use. In this case, the power switch, the voice volume, and the other control switches are integrally provided on the front panel of the audio equipment. In the case of audio equipment such as a radio pre-recorder or a recorder, if the user listens to the sound with these equipments installed on hand, the above controls can be operated manually. It's a hindrance by being able to do it

OMPI There was no such thing as. However, recently, audio is also broadcast in stereo in television broadcasting, and as a result, the opportunity to listen to television audio using a headphone is increasing. In the case of such a television receiver, there is a problem that it cannot be said that it is easy to install a television receiver at hand and watch as in the case of the above-mentioned audio equipment such as a radio. . In other words, to listen to the sound while watching the image, there is a suitable viewing distance of the image.If the image is too close, you cannot see the image clearly. There is a problem of getting tired.

Therefore, when watching a stereo broadcast from a television while listening to it on the headphone, the headphone code must be extended to some extent and the proper viewing distance from the television receiver should be increased. It is normal viewing condition to watch at the position where you put it.

By the way, at a position distant from the television receiver in this way, a control switch operation of a power switch and a channel switching switch provided on the main body of the apparatus, etc. When the members were operated, it was difficult to operate, such as having to approach the receiver each time. In addition, such a problem is not limited to the case of the television, but also in the case where the headphone code is drawn from the portable radio pre-recorder stored in the back and used. Occurs. In other words, there is an inconvenience that the user has to operate the control operation member by digging his hand into the bag and groping, or taking it out of the bag.

Under these circumstances, it has been customary to provide a control section for power supply, sound quality, volume, etc. in the-section of the headphone housing. In addition, the ability to control the head horn is considered to be S '. However, in particular, it is necessary to control the sound quality and volume while listening to the sound.Therefore, when the head horn is worn on the head-when the head is fitted to the ear, the above-mentioned control It is impossible to confirm the control with a huge size, and it is impossible to perform a precise control while watching the control dial, etc. The usability was bad. In addition, the control unit, which is integrated with the headphone, increases the weight of the headphone itself, causing head and ear fatigue during use. .

As shown in Fig. 1, a remote control cord (10) drawn from the equipment body (5) such as a television receiver is installed at the end of the remote control cord (10). If the remote control of the device body (5) is performed by using the control device (15), the head horn (25) or the like can be controlled at the suitable viewing distance. You can operate the control console even if you do not approach the device while using it. However, if you use such a remote control device (15), the remote control device (5) will allow remote control. The two cords (10, 20) of the cord (10) for the connection port and the connection cord (20) for the headphone (25) extend. It was inconvenient to get out of the room, because the surroundings of the equipment became cluttered and these codes (10, 20) became entangled. In use, the plug (11, 21) at the end of each of these two cords (10, 20) is connected to the remote control jack (1) of the main body of the equipment. It is necessary to fit each of the input jacks (1) and (2), and if the above codes (10, 20) are entangled, connect the input jacks (1, 2) by mistake.て ΡΙ There was also a risk of doing so. DISCLOSURE OF THE INVENTION The present invention enables a remote control of a main body of an audio equipment that supplies an audio signal to the earphone or the like when listening to an audio output using an earphone or a headphone. In particular, it is intended to ensure that the listener can operate the control operation unit while looking at it at hand.

Another object of the present invention is to supply an audio signal from the above-mentioned audio equipment main body to a horn or the like without providing a special code dedicated to remote control of the audio equipment main body. The purpose of the present invention is to enable the above-mentioned remote control α by effectively utilizing the connection code to be used.

Still another object of the present invention is to enable a plurality of remote controls of an audio equipment main body.

-That is, according to the present invention, a remote control opening of the audio equipment main body is provided in the middle of the connection cord between the connection plug attached to the audio equipment main body and the earphone or the like. By providing the control operation section, the remote control of the audio equipment is performed by the control operation section via the connection code. The control console controls various remote control operations, such as switching power switches in audio equipment such as television receivers, adjusting volume, and switching reception channels. You can do it. When using a stereo headphone or the like, two types of control information can be obtained from the control console through the control unit using the signal lines of each channel of the connection code. Give to

/ ΟΜΡΙ Can be Furthermore, four types of remote control can be performed by using the signal lines of each of the above channels to indicate the control information to be given to the audio equipment itself by using a binary code. Can be. Furthermore, the above control operation section can be constituted by a switch for short-circuiting between the signal line of the connection cord and the ground line. It can be excellent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view showing the configuration of a conventional general electroacoustic transducer.

FIG. 2 is a schematic external view showing the overall configuration of one embodiment of the electroacoustic transducer according to the present invention.

FIG. 3 is a plan view of a control operation unit applied to this embodiment.

FIG. 4 is a longitudinal sectional view of the control operation unit along the line I-I in FIG.

FIG. 5 is a circuit diagram showing the electrical configuration of this embodiment. 0 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. This will be described in detail with reference to FIG.

FIG. 2 is a schematic external view of a headphone to which the present invention is applied.

3 1) is the stereo head horn, and the head horn (32)

ΟΜΡΙ Electroacoustic transducers for the right and left channels (not shown) are built in the left and right headphone seals (33R) and (33L) attached to both ends of the. The codes (34R) and (34L) are drawn out from the above-mentioned head horn seals (33R) and (33L), and the control unit 5 (3 5), and at the end of a cord (36) drawn from the control operation section (35), a plug fitted to a connection jack provided on a television receiver (not shown) is attached. (37) is installed.

In addition, if a specific example of the above-mentioned control operation unit (35) is shown,

10 For example, as shown in Figs. 3 and 4, the control case (40) formed by the upper and lower case half (41A) and (41 ()

'— The cords (34R) and (34L) are pulled out from the end via a bush (9A), and the cord (36) is drawn out from the other end through the bush (39A). B) has been withdrawn through. The control operation section (35) has switch buttons (42A) and (42B) arranged in parallel on the surface (40A) of the case (40) so as to be able to press freely. A printed circuit board (4, 3) and electronic components such as resistors (51A) and (51B) are provided in the case (40). ing. The above switch buttons (41A) and (41B)

20 For example, the switches (52A) and (52B) in the control switch circuit as shown in Fig. 5 can be opened and closed.

Further, an annular concave portion (44) is formed in the case (40) near the center of the back surface (40B), and constitutes a mounting portion for the clip (45). . That is, the recessed surface (44) of the case (44A)

Reference numeral 25 denotes a mounting surface of the printed circuit board (43), and the upper case half 4 WIPO ,

The printed circuit board (43) can be sandwiched between the inner protrusion (46) formed on the 1A) side. Also, (47) a clip support pin which also serves as a fixing screw for connecting and fixing the upper and lower case half (41A) and (41B), and is provided in the recess (44). The female screw hole (46A) threaded through the opening (43A) of the printed circuit board (43) from the opened opening (44B) and threaded into the inward protrusion (46). Screwed into the halves (41A) and (41B), clamped the printed circuit board (43), and pivoted the clip (45). ing.

Next, in the circuit diagram of FIG. 5, the audio equipment main body 60 is, for example, a television receiver having a stereo audio output circuit, and the first output amplifier (61) is connected to the first audio amplifier. The audio signal for the right channel is output via the output transformer (62), and the left channel is output from the second output amplifier (63) via the second output transformer (64). It outputs the audio signal for the channel. The audio equipment main body (60) has a function of remotely controlling the gain of each of the output amplifiers (61) and (S3), that is, the volume control of the stereo audio signal. Therefore, the first detection circuit (72) is connected to the secondary coil of the first output transformer (62) via the first detection transformer (71). In addition, a second detection circuit (74) is connected to a secondary coil of the second output transformer (64) via a second detection transformer (73). Each of the above detection circuits (72) and (74) outputs the oscillation output supplied from the generator (75) oscillating at a frequency higher than the audible frequency to each detection coil (72) and (72). ) To the signal line of each channel, and the secondary coil (7P) viewed from the primary coil (71P) of the first detection transformer (71). 1 S)

OMPI The secondary coil (73S) as viewed from the primary coil (73P) of the second detection coil (73) as well as being detected by the detection circuit (72) of (1) The change in the impedance of is detected by the second detection circuit (74). Further, the first detection circuit (72 :) operates the first pulse generator (76) with the detection output. The volume control circuit for the right channel (R.7) controls the gain of the first output amplifier (61) in accordance with the pulse output from the first pulse generator (76). Similarly, the volume control circuit (79) for the left channel is provided with a pulse output from the second pulse generator (78) that operates with the detection switch of the second detection circuit (74). The gain control of the second output amplifier (63) is performed according to.

In addition, the control console (35) is provided with a cord (3) connecting the audio equipment body (60) and the stereo head horn (31).

6) A first switch (52A) and a second switch (52B) for short-circuiting between the signal line of each channel and the ground line. The first resistor (51 A) and the second resistor (51 A)

5 1 B).

Further, the stereo headphone (31) is connected to the electroacoustic transducers (31R) and (31L) for each channel by the resistors (51A) and (51B). ), The stereo audio signal supplied from the audio equipment body (60) is converted into an audio output and output.

In the embodiment having the above-described configuration, the first switch (52A) is opened and closed by the first switch button (42A) of the control operation section (35). OMPI controls the gain of the first output amplifier (61 :) of the audio equipment body (60), that is, the volume of the audio output of the right channel. -Can be controlled. Similarly, the volume of the audio output of the left channel can be remotely controlled by the second switch button (42B). In addition, the control console (35) is located in the middle of the cord (36) connecting the audio equipment (60) and the stereo headphone (31). Since it is provided, the user can easily and reliably operate it with the help of the clip (45 :) while wearing it on clothes. Furthermore, no special code is required for the remote control port of the audio equipment main body (60), and no connection error or the like occurs. Furthermore, the control operation section (35) has a very simple configuration with switches (52A) and (52B), and is small and small in size, making it easy to handle. is there

In this embodiment, the volume of each channel of the television receiver having the stereo audio output circuit is adjusted. However, the present invention is not limited to the above-described embodiment. Of course, it is also possible to perform remote control such as switching control of the receiving channel and power-on. Furthermore, if the control information of the binary code given in the combined state of opening and closing the switches provided on the signal lines of each channel is output from the control operation section, Various control operations can be performed.

OMPI

Claims

The scope of the claims

(1) A horn for converting an electric signal supplied from the main body of the audio equipment into a sound output through a command connected to the main body of the audio equipment via a detachable connection plug, and outputting the converted sound signal; And a control operation unit for performing remote control of the above, and the control operation unit is provided in the middle of the code between the connection plug and the horn. An electroacoustic transducer characterized in that an audio device is controlled by the console unit via the above code.

( ² ) The electro-acoustic transducer according to claim 1, further comprising a control operation unit including a switch for shortening a distance between a signal line of the cord and a ground line. -

(3) The control line is provided with switches on the signal lines of each channel of the code that supplies electric signals of two channels to the stereo earphone, and two types of control operations are performed. 3. The electro-acoustic conversion device according to claim 2, wherein the electroacoustic conversion device is used.

(4) A control operation section comprising switches on the signal lines of each channel for supplying electric signals of two channels to the stereo earphone is provided, and the open / close operation state of each of the above switches is provided. 3. The electric sound according to claim 2, wherein the control information indicated by the binary code according to the combination is output from the control operation unit.