JPH077782A - Earphone device with remote controller - Google Patents

Abstract

PURPOSE:To reduce cost by reducing the number of the terminals of a plug and a jack and simplifying structure and to improve tone by eliminating the mutual interference of control signals and audio signals. CONSTITUTION:In a remote control part 6, an audio signal fly-back line 6GA to be connected to an earphone 7 and a control signal fly-back line 6GC from a microcomputer 6b for a remote controller are not connected and left separated and the audio signal fly-back line 6GA is connected to the audio signal fly-back line 5GA of a cable 5. On the other hand, the control signal fly-back line 6GC is connected to the control signal fly-back line 5GC of the cable 5 and the audio signal fly-back line 5GA and the control signal fly-back line 5GC of the cable 5 are connected to a common plug terminal 4a3 in common in the plug 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is connected to a jack of a main device such as a portable CD stereo device via a plug, and an earphone is provided at an end of a cable.
The present invention relates to an earphone device with a remote controller that includes a remote controller that controls a main device in the middle of a cable, and more specifically, to a connection method between a core wire and a plug terminal in a cable.

[0002]

2. Description of the Related Art A conventional example of a remote control earphone device whose main device is a portable CD stereo device will be described. In the case of a portable CD stereo device, a remote control unit is provided in the middle of the cable of the earphone in order to improve the usability when carrying, and the remote control unit displays switches for operating the CD stereo device and operating states and operating states. In general, a liquid crystal display unit and a volume adjusting volume are provided for this purpose. FIG. 3 shows an example of such a system.

In FIG. 3, reference numeral 1 denotes a portable CD stereo device (also referred to as a main device), 1a denotes a main device jack, and X.
Is an earphone device with remote control, 2a is a cable, 2b
Is a plug which is provided at one end of the cable 2a and which can be inserted into and removed from the main unit jack 1a. 2c is an earphone provided at the other end of the cable 2a. 2d is a remote control unit provided in the middle of the cable 2a. 2e is a volume adjusting volume. 2f is an operation key and 2g is a liquid crystal display.

In such a portable CD stereo device 1, in order to operate the CD stereo device 1 between the CD stereo device 1 which is the main device and the remote control section 2d of the earphone device X with a remote controller which is an accessory device. Pulse-like control signal (digital signal) for displaying the operation signal of the CD stereo device 1 and the operating state of the CD stereo device 1 on the liquid crystal display unit 2g.
And an audio signal (analog signal) for driving the earphone 2c is exchanged.

By the way, in general, these two kinds of signals influence each other to some extent, and when the control signal component is mixed in the audio signal, it is heard as noise, and the sound quality is deteriorated. Further, the audio signal component affects the control signal. If they are mixed, there is a possibility that a problem may occur in the control operation or display operation.

A more specific description will be given with reference to FIGS. In FIG. 4 showing a connection schematic diagram in the case of a five-pole plug five-core cable, 3 is a main unit, 3a is a five-pole jack, 3
a ₁ to 3 A ₅ is jack terminal, 3b audio amplifier, 3c the main unit microcomputer, is a 5-pole plug 4, 4a
₁ to 4A ₅ plug terminal corresponding to jack 3a ₁ to 3 A ₅ each, 5 5-conductor cable, 5A audio signal line, 5C the control signal line, 5G is connected to the ground line in the main device 3 Common return line common to the audio signal and the control signal, is a core number, 6 is a remote control unit, 6a is a volume adjusting volume, 6b is a remote control microcomputer, 6c is an operation key, 6d is a liquid crystal display unit, 6G
_A is an audio signal return line, 6G _C is a control signal return line, and 7 is an earphone. Details of the connection between the core wires and the plug terminals 4a ₁ to 4A ₅ in the cable 5 is shown in FIG. 4b is an inter-terminal insulator, and 4c is a plug body.

FIG. 6 is a perspective view showing the jack 3a and the plug 4. 3d is a main device cabinet and 3e is a printed wiring board.

In the remote control unit 6, the audio signal return line 6G _A and the control signal return line 6G _C are connected to the common return line 5G, and in the plug 4, the common return line 5G is connected to the plug terminal 4a.
Connected to ₃ . Therefore, the number of contact terminals in the plug 4 and the jack 3a decreases by one,
The cost is reduced by simplifying the structure. However, since each core wire in the cable 5 is very thin, the impedance of the common return line 5G becomes a value that cannot be ignored, and the audio signal (analog signal) and the control signal (digital signal) influence each other, and As described above, the control signal component mixes with the audio signal and is heard as noise, or the audio signal component mixes with the control signal, resulting in a malfunction.

In order to solve the above inconvenience, an earphone device X with a remote controller as shown in FIGS. 7 to 9 has been considered. In FIG. 7 showing a connection schematic diagram in the case of a 6-pole plug 6-core cable, 8 is a main device, 8a is a 6-pole jack,
8a _{1 to} 8a ₆ are jack terminals, 8b is an audio amplifier, 8c is a main unit microcomputer, 9 is a 6-pole plug, and 9a
₁ ～9A ₆ plug terminal corresponding to the jack terminal 8a ₁ ~8a ₆ respectively, 10 6-conductor cable, 10A audio signal line, 10C are control signal lines, 10G _A, 10
G _C is connected to the plug terminals 9a ₃ and 9a ₆ , respectively,
An audio signal return line and a control signal return line that are separately connected to the ground line in the main unit 8, ~ is a core line number, 11 is a remote control unit, 11a is a volume adjusting volume, 11b is a remote control microcomputer, and 11c is an operation key. ,
11d is a liquid crystal display unit, 11G _A is an audio signal return line,
Reference numeral 11G _C is a control signal return line, and 12 is an earphone. Each core of the cable 10 and the plug terminals 9a ₁ ~9a
Details of the connection with ₆ are as shown in FIG. 9b is an inter-terminal insulator, and 9c is a plug body. FIG. 9 is a perspective view showing the jack 8a and the plug 9. 8d is a main device cabinet and 8e is a printed wiring board.

Audio signal return line 1 in remote control unit 11
1G _A and control signal return line 11G _C are separated. The audio signal return line 11G _A is connected to the audio signal return line 10G _A inside the cable 10, and the control signal return line 11G _C inside the remote control unit 11 is connected to the control signal return line 10G _C inside the cable 10, respectively. Are separately grounded in the main unit 8. Therefore, the audio signal return line 10G _A and the control signal return line 10 in the cable 10 are
Even if G _C is a very thin one whose impedance cannot be ignored, both return lines 10G _A , 10
Since G _C is separated from each other, the mixing of the control signal (digital signal) into the audio signal (analog signal) and the mixing of the audio signal into the control signal are only slight due to the capacitance between the cores. , Which is a level with no practical problems. However, this increases the number of core wires by one,
Since the number of contact terminals is increased by one in each of the plug 9 and the jack 8a, the structure is complicated and the cost is increased.

[0011]

In the former example, the former one has a small number of contact terminals, but the audio signal and the control signal interfere with each other, especially when the control signal component is mixed in the audio signal, it becomes noise. There is a problem that the sound quality deteriorates, and the latter one does not interfere with both signals, but there is a problem that the number of contact terminals increases and the structure becomes complicated and the cost increases.

The present invention was devised in view of such circumstances, and the number of contact terminals of a plug and a jack is reduced to simplify the structure and reduce the cost, and at the same time, the control signal and the audio signal are combined. The purpose is to ensure high reliability by eliminating mutual interference.

[0013]

The present invention has the following constitution in order to achieve the above object. The most important feature is that the audio signal return line and the control signal return line are separately wired in the cable, and both return lines are commonly connected at the plug terminal. That is, as a premise, the jack of the main device is removably connected via a plug, an earphone is provided at the end of the cable, and a remote control unit for controlling the main device is provided in the middle of the cable. In such an earphone device with a remote controller, the audio signal return line and the control signal return line, which are separately derived from the remote control unit, are introduced as separate core wires even in the cable, and further, they correspond to the common jack terminal connected to the ground line. The end portions of both core wires are commonly connected to the common plug terminal.

[0014]

Since the audio signal return line and the control signal return line are wired as separate core wires in the cable, mutual interference between the control signal and the audio signal does not occur even if these core wires are thin wires whose impedance cannot be ignored. Substantially does not occur. Since the audio signal return line and the control signal return line were connected to the common plug terminal in the plug,
As for the plug and the jack, the number of contact terminals is one less than the number of core wires, and the structure is simplified.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a remote control earphone device according to the present invention will be described below in detail with reference to the drawings.

[0016] In FIG. 1 showing the connection schematic in the case of a 5-pole plug 6-core cable, 3 a main unit (portable CD stereo system), 3a is a 5-pole jack, 3a ₁ to 3 A ₅ is jack, 3b audio amplifier, 3c the main unit microcomputer, is a 5-pole plug 4, 4a ₁ to 4A ₅ plug terminal corresponding to jack 3a ₁ to 3 a _5, respectively,
Reference numeral 5 is a 6-core cable, 5A is an audio signal line, 5C is a control signal line, and 5G _A and 5G _C are an audio signal return line and a control signal return line, which are wired separately in the cable 5, respectively. The audio signal return line 5G _A and the control signal return line 5G _C are commonly grounded to the common plug terminal 4a ₃ in the plug 4.

Is a core wire number, 6 is a remote controller, and 6a
Is a volume control volume, 6b is a remote control microcomputer,
6c is an operation key, 6d is a liquid crystal display, 6G _A is an audio signal return line, 6G _C is a control signal return line, and 7 is an earphone. Audio signal return line 6G _A in remote control unit 6
And the control signal return line 6G _C are separated from each other, the audio signal return line 6G _A is connected to the audio signal return line 5G _A of the cable 5, and the control signal return line 6G _C is connected to the cable 5
Is connected to the control signal return line 5G _C.

Each core wire in the cable 5 and the plug terminal 4a ₁
Details of the connection with 4a ₅ are as shown in FIG. Four
b is an insulator between terminals and 4c is a plug body. The structure of the jack 3a and the plug 4 is simplified as in FIG. In the plug 4, since the audio signal return line 5G _A and the control signal return line 5G _C are commonly connected to the common plug terminal 4a ₃ , the plug 4 also has the jack 3a.
Also, the number of contact terminals is reduced by one, and the cost is reduced by simplifying the structure. Further, since the audio signal return line 5G _A and the control signal return line 5G _C are separated from each other in the cable 5, mutual interference between the audio signal (analog signal) and the control signal (digital signal) is eliminated, and the earphone 7 Sound quality is improved, and the control signal from the operation key 6c and the drive signal for the liquid crystal display unit 6d are not disturbed, and the reliability of the operation is improved.

The liquid crystal display section 6 in the remote control section 6
d may be omitted.

[0020]

As described above, according to the present invention, since the audio signal return line and the control signal return line are wired as separate core wires in the cable, it is possible to prevent the interference between the control signal and the audio signal. Both the control signal and the audio signal can be transmitted in a high-quality state in which noise is not mixed. Moreover, since the audio signal return line and the control signal return line are connected to the common plug terminal not in the remote control section but in the plug, the number of contact terminals in the plug is reduced by one from the number of core wires, which simplifies the structure and reduces the cost. Can be achieved.

[Brief description of drawings]

FIG. 1 is a connection schematic diagram of a remote control earphone device according to an embodiment of the present invention in the case of a 5-pole plug 6-core cable.

FIG. 2 is a specific wiring structure diagram of the plug in the example.

FIG. 3 is a perspective view showing a portable CD stereo device and an earphone device with a remote controller thereof.

FIG. 4 is a connection schematic diagram of an earphone device with a remote controller according to a first conventional example in the case of a 5-pole plug 5-core cable.

FIG. 5 is a specific wiring structure diagram of the plug in the first conventional example.

FIG. 6 is a perspective view showing a plug and a jack in a first conventional example.

FIG. 7 is a schematic connection diagram in the case of a 6-pole plug 6-core cable for an earphone device with a remote controller according to a second conventional example.

FIG. 8 is a specific wiring structure diagram of a plug in a second conventional example.

FIG. 9 is a perspective view showing a plug and a jack in a second conventional example.

[Explanation of symbols]

X ...... with remote control earphone device 3 ...... main unit (portable CD stereo device) 3a ...... 5-pole jack 3a ₁ to 3 A ₅ ...... jack 3b ...... audio amplifier 3c ...... main unit microcomputer 4 ...... 5 Pole plugs 4a _{1 to} 4a ₅ ...... Plug terminal 4a ₃ ...... Common plug terminal 5 ...... 6-core cable 5A ...... Audio signal line 5C ...... Control signal line 5G _A ...... Audio signal return line 5G _C ...... Control signal Return line 6 …… Remote control unit 6a …… Volume control volume 6b …… Remote control microcomputer 6c …… Operation key 6d …… Liquid crystal display unit 6G _A …… Audio signal return line 6G _C …… Control signal return line 7 …… earphone

Claims (1)

[Claims] 1. An earphone device with a remote controller, which is removably connected to a jack of a main unit via a plug, has an earphone at the end of the cable, and has a remote control unit for controlling the main unit in the middle of the cable. In the cable, the audio signal return line and the control signal return line, which are separately derived from the remote control unit, are led as separate core wires, and the common plug terminal corresponding to the common jack terminal connected to the ground line is connected to the both plugs. An earphone device with a remote controller, characterized in that ends of core wires are commonly connected.