JPH089483A - Headphone set - Google Patents

Abstract

PURPOSE:To provide a headphone set with good appearance and convenience in use by effectively assembling and integrating the reproduction part of an electric signal and a connection mechanism. CONSTITUTION:A signal from the reproduction part of the electric signal consisting of a reproduction module 111, storage modules 112 and 114, and battery 114 housed in a top case 150 is supplied to a metal frame 504 and wires 117L, 117R, 118, and 119 and to hoods 501L and 501R through sliders 116L, 116R, 121L, 121R, 124, and 125 in length adjustors 503L and 503R along the metal frame 504.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headphone set, and more particularly to a headphone set integrated with an electric signal reproducing section. In the following description, L means the left part and R means the right part, and in order to avoid complication, if the left part and the right part have the same contents, the description is partially omitted.

[0002]

2. Description of the Related Art A conventional headphone set, as shown in FIG. 5, is a hood 501L having a built-in electroacoustic conversion element,
501R, holders 502L, 502R, length adjuster 5
03L, 503R, a metal frame 504 having a spring property for fixing to the head, a top guard 505, a Y-shaped cable 506, and a plug 507. The plug 507 is used to transmit an electric signal using a tape or a disk medium. It is common to connect with a playback device.

On the other hand, with the rapid progress of microelectronics technology, for example, by the technology disclosed in Japanese Patent Laid-Open No. 334866/1993, a semiconductor memory medium is used in place of a tape or a disk medium to dramatically reduce the size of electrical equipment. As a result of obtaining a signal reproducing section, it has become possible to incorporate it into a headphone set and integrate it. Regarding such a technique, for example, Japanese Patent Laid-Open No. 59-9.
5593, JP-A-3-139700 and the like.

[0004]

In the realization of a headphone set integrated with a reproducing section, it is important how to electrically connect the reproducing section and the electroacoustic conversion elements in the left and right hoods. It becomes a problem. At that time, from the viewpoint of manufacturing cost or reliability, it is required to shorten the length of the conductive wire and reduce the number thereof. On the other hand, in the above disclosed example, it seems that a conventional cable is assumed to be used for such connection, but in such a case,
The presence of the cable is troublesome and the appearance is unfavorable, and there is a drawback that the length cannot be adjusted efficiently.

An object of the present invention is to provide a headphone set which can solve such a drawback.

[0006]

A headphone set according to the present invention has a plurality of conductors arranged along a metal frame and sliders corresponding to the metal frame and the conductors, respectively, and has a built-in electric signal. The signal from the playback unit
It is made to be guided to the left and right hoods through the metal frame, conducting wire and slider.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is an external view showing an embodiment of a headphone set of the present invention. The reproduction module 111 and the storage modules 112 and 113 are disclosed in, for example, Japanese Patent Laid-Open No. 5-3348.
66, which together with the battery 114 constitute an electric signal reproducing section, are housed inside the top case 150. The ground wire of the reproducing unit is connected to the metal frame 504. Further, one end of the metal frame 504 is connected to the slider 116L fixed to the metal base 115L in the length adjuster 503L, and the other end is similarly connected to the metal base 115R in the length adjuster 503R.
Is connected to a slider 116R fixed to.

Conductors 117L, 117R, 118, and 119 are arranged along metal frame 504. Signal lines for the left and right ears of the electric signal reproducing section are connected to the conductors 117L and 117R, respectively.
It is connected to sliders 121L and 121R fixed on conductors 120L and 120R arranged along metal bases 115L and 115R in 03L and 503R. Conductor 11
A signal line for volume control is connected to 8 and a metal base 11
It is connected to a slider 124 fixed to a conducting wire 122 on 5L. A signal line for start / stop is connected to the conductor 119, and is connected to a slider 125 fixed to the conductor 123 on the metal base 115R. Further, the metal base 115L, the conductive wires 120L and 122 are holders 502.
One cable 126L is bundled in L and connected to the left hood 501L. The same applies to the right part. It should be noted that this embodiment also includes substituting one metal wire for the metal base and fixing it to the length adjuster together with other metal wires, or disposing five or more metal wires along the metal frame. Volume 127, push button switch 12
8 、 Alternate switch 129 adjusts volume,
It is for start / stop and power on / off. The cover 151 is opened and closed when replacing the storage modules 112, 113 or the battery 114.

FIG. 2 is a connection diagram of the cable and the electric parts in the left and right hoods. The conductive wires 120L and 122 and the metal base 115L are connected to the electroacoustic conversion element 201L, the volume 127 and the ground wire in the left hood 501L via a cable 126L, respectively. The right hood is basically the same.

FIG. 3 is a block diagram of the reproduction module. The oscillator 310 generates a synchronization signal. In this embodiment, left and right 2 channels, sampling frequency 48 KHz,
Assuming digital audio data obtained by the 16-bit quantization method, the sync signal is 1.536 Mbit / sec. A signal from the push button switch 128 is guided to the conductor 301, and the start / stop state is held in the holding circuit 311. The outputs of the oscillator 310 and the holding circuit 311 are guided to the AND gate 312, become a data read signal and are sent to the storage module, and the frequency is divided by 1/32 by the frequency dividing circuit 313.
It becomes a timing signal for the D / A converters 314L and 314R. On the other hand, the digital audio data from the storage module is input to the sample value register 315 having a 32-bit length,
/ A converters 314L and 314R, low-pass filters 316L and 316R, and amplifiers 317L and 317R to be converted into signals for the left and right ears, and the electroacoustic conversion element 2
It is led to 01L, 201R. The acoustic adjustment signal on lead 302 is directed to volume 127.

FIG. 4 is a block diagram of the storage module. In the present embodiment, the semiconductor memory element 410 has an 8-bit / word structure. The data read signal input from the conductor 401 passes through the AND gate 411 and the frequency dividing circuit 4
It is guided to 12 and divided into 1/8 to become a read control signal, which is sent to the read control unit 413. On the other hand, digital audio data is taken into the sending register 415 by the read control signal that has passed through the delay circuit 414, and the OR gate 41 has been received by the data read signal that has passed through the delay circuit 416.
7 is output to the playback module. When the read control unit 413 detects that the data reading is completed, a signal is output to the holding circuit 418. The output signal of the holding circuit 418 passes through the AND gate 419 as a data read signal to reach the storage module in the next stage, and also prevents the data read signal from passing through the AND gate 411 via the delay circuit 420. . Digital audio data from the storage module at the next stage is input to the lead wire 402.

[0013]

As described above, the headphone set of the present invention uses a metal frame as a conductor of an electric signal and a supporting body thereof, so that the headphone set is simplified not only by incorporating only the reproducing portion of the electric signal. By incorporating the electric connection mechanism described above, it is possible to achieve true integration and miniaturization, and it is possible to provide a desirable appearance and high convenience in use.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of a headphone set of the present invention.

FIG. 2 is a wiring diagram of a cable and electric parts in left and right hoods.

FIG. 3 is a block diagram of a playback module.

FIG. 4 is a block diagram of a storage module.

FIG. 5 is an external view of a conventional headphone set.

[Explanation of symbols]

111 Reproduction Module 112,113 Storage Module 114 Battery 115L, 115R Metal Base 116L, 116R, 121L, 121R, 124, 1
25 sliders 117L, 117R, 118, 119, 120L, 12
0R, 122, 123 Conductive wire 126L, 126R Cable 127 Volume 128 Push button switch 129 Alternate switch 150 Top case 151 Cover 201L, 201R Electroacoustic transducer 301, 302 Conductive wire 310 Oscillator 311 Holding circuit 312 And gate 313 Dividing circuit 314L, 314R D / A converter 315 Sample value register 316L, 316R Low-pass filter 317L, 317R Amplifier 401, 402 Conducting wire 410 Semiconductor memory device 411, 419 AND gate 412 Dividing circuit 413 Read control unit 414, 416, 420 Delay circuit 415 Sending register 417 OR gate 418 Holding circuit 501L, 501R Hood 502L, 502R Holder 503L, 503R Length adjuster 5 4 the metal frame 505 top guard 506 Y-cable 507 plugs

Claims (2)

[Claims] 1. A plurality of conductors arranged along a metal frame, and sliders corresponding to the metal frame and the conductors, respectively, wherein signals from a built-in electric signal reproducing unit are transferred to the metal frame, A headphone set characterized by being guided to the left and right hoods via conductors and sliders. 2. The headphone set according to claim 1, wherein a storage module, a reproduction module, and a battery are mounted on the top case.