JP2006094386A - Headphone device for portable mobile terminal and portable mobile terminal equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a headphone device for a portable mobile terminal capable of reducing the attenuation of gain in signal transmission as much as possible, increasing sensitivity, reproducing sound with noise as little as possible and being excellent in weight balance, and portable mobile terminal equipment. <P>SOLUTION: Patch antennas 11a and 12a are planar elements where an antenna and an LNA are formed and are suitable for receiving planar polarized waves. A pair of them is provided symmetrically on the left and right of a band part 20 to be positioned at the head upper part when worn by a user. In such a manner, at the time of being on the head, a human body becomes an obstacle to shield radio waves, the gain attenuation of signals is not caused, and since they are disposed at left and right symmetrical positions, the weight balance of the headphone itself is maintained. Also, they are attached in the same reception direction, they can be used as the antenna of a diversity system, and by combining received power, the sensitivity is improved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a headphone device for a portable mobile terminal that receives radio waves such as satellite broadcasting and outputs audio information, and a portable mobile terminal device.

  In recent years, various broadcasting services have been provided using satellites. Among them, mobile broadcasting that can enjoy multi-channel digital broadcasting services while moving is attracting attention. FIG. 5 shows a system configuration diagram of mobile broadcasting. These systems are composed of a broadcasting center 100, a broadcasting satellite station 101, and a gap filler 102, and a user receives a service using a portable mobile terminal 103 or an in-vehicle terminal 104.

  The broadcast center 101 transmits program information to the satellite broadcast station 101 using Ku Band radio waves. In general, information is transmitted from the satellite broadcasting station 101 to the portable mobile terminal 103 or the in-vehicle terminal 104 by a satellite wave of 2.6 GHz. A place where this satellite wave does not reach is covered by installing a ground retransmission facility called a gap filler 102.

  The satellite used for the mobile broadcasting service is a satellite dedicated to this service, and since the antenna provided in the satellite transmits radio waves 7 to 10 times stronger than the conventional BS and CS, the terminal side is small. It can be received while moving with the antenna. On the terminal side 103, 104, a device has been devised to improve the reception quality by selecting a maximum of 12 radio waves in the order of good quality among the receivable radio waves and combining them into one.

In order to receive radio waves such as mobile broadcasting, an antenna is necessary. However, high-frequency radio waves such as 2.6 GHz are likely to be attenuated, and an antenna such as a portable mobile terminal may be operated at a position that becomes a shadow of the human body depending on how the user holds the antenna. I will wake you up. For this reason, for example, Patent Document 1 discloses a headphone that is mounted on a user's head and includes an antenna.
Japanese Patent Application No. 09-270729

However, although this headphone device is provided with an antenna, an amplifier is provided on the portable mobile terminal side. However, as described above, when a high-frequency radio wave is received, the signal is greatly attenuated even in the cord and the connection portion. In particular, in the case of music broadcasting, high sound quality is required, but there is a possibility that a signal with much noise is reproduced.
Also, since there is only one antenna, there is a problem in that the sensitivity can be uneven and at the same time the left and right weights are different and the balance is poor.

  An object of the present invention is to provide a headphone device for a mobile mobile terminal and a mobile mobile terminal device that can reduce the gain attenuation in signal transmission as much as possible to increase the sensitivity, can reproduce sound with as little noise as possible, and have an excellent weight balance. It is something to be offered.

  The present invention is directed to a portable mobile terminal headphone device having a speaker for receiving information transmitted by radio waves and outputting sound information. An antenna for receiving a broadcast signal on which the signal is superimposed, an amplifier for amplifying the broadcast signal received by the antenna to a predetermined gain level, and the broadcast signal amplified by the amplifier are connected to a portable mobile terminal. First connection means for outputting and second connection means for inputting audio information decoded by the portable mobile terminal among the broadcast signals output from the first connection means to the speaker It is characterized by having.

  Further, it is desirable that a pair of antennas are arranged on the right and left sides of the headphone device, and an amplifier is provided for each antenna.

  Further, the present invention provides a portable mobile terminal device connected to the headphone device, wherein a plurality of antennas are provided, and amplifiers are provided as many as the corresponding antennas, and synthesizes broadcast signals received from the respective antennas. For this purpose, a synthesizing means is provided.

  Moreover, it is desirable that the receiving directions of the antennas are the same. Furthermore, the antenna is preferably a patch antenna.

  According to the present invention, since the antenna is located above the headphones, it is possible to prevent a reduction in antenna gain regardless of the use state and direction of the terminal, and at the same time, an amplifier is provided. Thus, it is possible to prevent unnecessary attenuation that occurs until the broadcast signal received by the antenna reaches the terminal, and to maintain a constant gain level.

  In addition, since the antenna and the amplifier are provided as a pair on the left and right sides, it is possible to prevent the headphone from being biased to one side during walking or jogging while wearing the headphone device due to its weight.

  In addition, since a plurality of antennas are provided, it is possible to set the gain level of the broadcast signal received by the diversity method to be higher. If the receiving directions of the antennas are the same, the gain level becomes higher.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an external view showing an embodiment of a headphone device according to the present invention. FIG. 2 is an external view showing an embodiment of the portable mobile terminal according to the present invention. FIG. 3 is a block diagram of the headphone device and the portable mobile terminal.

  FIG. 1A shows a headphone type, and FIG. 1B shows an earphone type. The difference between the two types is that (a) includes a band 18 that contacts and fixes the upper part of the head, and (b) includes an ear hooking portion 19 instead of the band 18 and the antenna. The mounting position is different.

  A headphone type headphone 1a shown in FIG. 1A includes chip-shaped patch antennas 11a and 12a each having an antenna and an LNA (Low Noise Amplifier), speakers 13a and 14a, speaker lead wires 15a, and antennas. A lead wire 16a, a headphone terminal (plug) 17a, antenna terminals (plugs) 18a and 19a, and a belt 20 are included.

  The patch antennas 11a and 12a are planar elements in which an antenna and an LNA are formed, and are suitable for receiving plane polarized waves. When the user wears this, a pair of left and right objects are provided in the band unit 20 located at the top of the head. In this way, if it is above the head, the human body will be obstructed and the radio wave will not be interrupted and the gain of the signal will not be attenuated. Even when jogging or the like, the headphones are unlikely to fall off the head. Moreover, the reception direction is attached in the same direction, and it can be used as a diversity antenna, and the sensitivity can be improved by combining the reception power.

  An earphone-type headphone 1b shown in FIG. 1B includes chip-shaped patch antennas 11b and 12b including an antenna and an LNA (Low Noise Amplifier), speakers 13b and 14b, a speaker lead wire 15b, and an antenna. A lead wire 16b, a headphone terminal (plug) 17b, antenna terminals (plugs) 18b and 19b, and ear hooks 21 and 22 are formed.

  The patch antennas 11b and 12b are attached to both outer surfaces of the speakers 13b and 14b. In this case, unlike the headphone system, it is difficult to make the receiving direction the same, but since it is attached to the speaker unit, an excellent design can be formed.

  As shown in FIG. 2, the mobile mobile terminal 2 includes external antenna terminals 41 and 42 with a switching SW, a headphone terminal 37, a display unit 41, and an operation unit 42 in appearance. Headphone antenna terminals (plugs) 18 a, 19 a, 18 b and 19 b are inserted into the external antenna terminals (holes) 41 and 42, and headphone headphone terminals (plugs) 17 a and 17 b are inserted into the external headphone terminal 37. Although details will be described later, an antenna is provided inside and can be switched to an antenna of a headphone.

  As shown in the block diagram of FIG. 3, the mobile broadcast receiving apparatus includes a headphone 1 and a portable mobile terminal 2. The headphone 1 includes external antennas 31 and 32, external LNAs 33 and 34, and a speaker unit 35. Although the external antenna and the external LNA are integrated in the above-described headphone implementation mobile phone, they are described separately here because they are functional descriptions. The portable mobile terminal 2 includes external antenna terminals 31 and 32 with switching SW, built-in antennas 43 and 44, built-in LANs 45 and 46, a front end unit 48, a back end unit 49, and a liquid crystal display unit 510. The

  Signals received via the external antennas 31 and 32 of the headphone 1 are amplified by the external LNAs 33 and 34 in order to compensate for the loss at the cable or antenna terminal, and are output to the external antenna terminals 41 and 42 with switching SW of the portable mobile terminal 2. Entered. On the other hand, the portable mobile terminal 2 is also provided with built-in antennas 43 and 44, and signals received via the built-in antennas 43 and 44 are amplified by the built-in LANs 45 and 46 and are connected to the external antenna terminals 41 and 42 with switching SW. Entered. The external antenna terminals 41 and 42 with switching SW are provided with a SW. When the external antennas 21 and 22 are not connected, the built-in antennas 43 and 44 are connected to the front end unit 48.

  When the headphone antennas 31 and 32 are not connected, when the built-in antennas 43 and 44 cannot receive the signal at the location of the portable mobile terminal, for example, when the viewer's body enters between the satellite and the receiver, When there are obstacles, etc. occur. Therefore, when using while moving, the headphone antennas 31 and 32 are connected, and the signal from the headphone antenna is used at the external antenna terminals 41 and 42 with switching SW. By doing so, the headphone antennas 31 and 32 are overhead, and there is almost no obstacle between the satellite and stable reception is always possible. In some cases, the headphone is not at hand or the portable mobile terminal is used in a fixed manner, and the built-in antennas 43 and 44 are provided in the portable mobile terminal.

  Although there are two antennas, the number of antennas is not limited to this, and there may be three or more. In that case, as many LNAs as the number of antennas are arranged. In addition, it is desirable that all these antennas have the receiving direction in the same direction. Although details will be described later, the sensitivity can be improved by synthesizing the received signals.

The front end unit 48 has a diversity function that increases the sensitivity by synthesizing signals from two antennas that perform RF signal processing of broadcast waves. Therefore, the RF signal input to the front end unit 48 can be increased in sensitivity by a maximum of 3 dB by the diversity function, and is subjected to signal processing and converted to baseband.
The back-end unit 49 processes the baseband signal, sends the signal to the liquid crystal display unit 51 for display, and outputs an audio signal to the headphone speaker 35 via the headphone terminal.

FIG. 4 shows another example of the headphone device.
(A) is an example in which two patch antennas 62 are attached to a neckband 61 of headphones.

  (B) is an example in which one patch antenna 62 is arranged on the headphone side and used as a diversity antenna in combination with one built-in antenna of the portable mobile terminal 63. In the above embodiment, either the internal antenna or the external antenna signal is selected by the external antenna terminal with the switching SW. However, in this embodiment, the signals of both the internal antenna and the external antenna are used. The signal is synthesized at the front-end unit to increase sensitivity.

  (C) is an example of using both an antenna cable and a headphone cable. In the embodiment shown in FIG. 1, three antenna cables and one headphone cable are used between the headphones and the portable mobile terminal. By multiplexing the signals, the number of cables is reduced and the headphones cable can be shared. Therefore, only one connection plug 64 is required.

  (D) is an example in which the rod antenna 65 is charged in the band 66.

  (E) is an example in which the rod antenna 65 is loaded into the speaker 67 and the connection plug 68 is integrated. In the embodiment of FIG. 1, it is necessary to connect three antenna terminals and two headphone terminals. By designing these three as a single unit, they are connected by one terminal 67.

  (F) is an example in which a part of the headphone cable 69 is used as the rod antenna 65.

1 is an external view showing an embodiment of a headphone device according to the present invention. It is an external view which shows embodiment of the portable mobile terminal device which concerns on this invention. It is a block diagram which shows the headphone apparatus and portable mobile terminal which concern on this invention. It is the schematic which shows the other example of a headphone apparatus. It is the schematic which shows the system in a mobile broadcast.

Explanation of symbols

1, 1a, 1b Headphone 2 Portable mobile terminals 11a, 11b, 12a, 12b Patch antennas 13a, 13b, 14a, 14b Speakers 15a, 15b Headphone cables 16a, 16b Antenna cables 17a, 17b Headphone plugs 18a, 18b, 19a , 19b Antenna plug 20 Bands 21, 22 Ear hooks 31, 32 External antennas 33, 34 External LNA
35 Headphone speaker unit 41, 42 External antenna terminal 43, 44 with switch SW Built-in antenna 45, 46 Built-in LNA
47 Headphone terminal 48 Front end unit (combining means)
49 Back-end unit 51 Liquid crystal display

Claims (6)

In a portable mobile terminal headphone device having a speaker for receiving information transmitted by radio waves and outputting audio information,
An antenna for receiving a broadcast signal on which at least one of video information and audio information is superimposed, which is located above when mounted;
An amplifier for amplifying to a predetermined gain level of a broadcast signal received by the antenna;
A first connection means for connecting and outputting the broadcast signal amplified by the amplifier to a portable mobile terminal;
A headphone apparatus comprising: second connection means for inputting, to the speaker, audio information decoded by a portable mobile terminal among broadcast signals output from the first connection means. The headphone device according to claim 1,
A pair of antennas are arranged on the right and left sides of the headphone device,
A headphone device in which an amplifier is also provided for each antenna.   A headphone device, wherein the antenna is a patch antenna. In the portable mobile terminal device connected to the headphone device according to any one of claims 1 to 3,
A plurality of antennas are provided, and amplifiers are provided as many as the corresponding antennas.
A portable mobile terminal device comprising a synthesizing unit for synthesizing a broadcast signal received from each antenna. In the portable mobile terminal device according to claim 4,
A mobile mobile terminal device characterized in that the receiving directions of the antennas are the same. In the portable mobile terminal device according to claim 4 or 5,
The portable mobile terminal device, wherein the antenna is a patch antenna.

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