JP4361548B2 - Portable wireless device - Google Patents

Description

  The present invention relates to a portable radio apparatus used for mobile communication and the like.

  Conventionally, what is shown in FIG. 11 is known as an antenna apparatus used for a portable radio apparatus, for example, a cellular phone. FIG. 11 is a diagram illustrating an appearance of a portable wireless device on which a conventional antenna device is mounted. The cellular phone device 400 is of a TDMA (Time Division Multiple Access) system having a diversity function. That is, this cellular phone device 400 has two antennas 401 and 402, compares the received electric field strengths of the antennas 401 and 402 using the idle time of communication, and selects the antenna with the higher received electric field strength. To do.

  Here, the antenna 401 is a telescopic whip / helical antenna, which operates as a whip antenna when extended from the casing, and operates as a helical antenna when stored in the casing. The antenna 402 is a built-in antenna such as an inverted F antenna.

  FIG. 12 is a diagram showing an appearance of a CDMA (Code Division Multiple Access) portable wireless device. CDMA wireless communication differs from TDMA wireless communication in that communication operations are performed continuously, that is, no idle time is generated during wireless communication, so it is difficult to realize the diversity function using the idle time. is there. For this reason, the conventional CDMA portable wireless device 500 is provided with only one antenna. In FIG. 12, the only antenna 501 is a telescopic whip / helical antenna, but may be a built-in antenna such as an inverted F antenna.

  However, in such a portable wireless device equipped with one antenna, there is a problem that when the antenna is pressed with a hand or a finger, the antenna performance is remarkably deteriorated and communication quality is lowered. According to the measurement by the present inventors, the reception sensitivity is about 5 dB when the finger is put on the antenna part, compared to a state where the finger or hand is not touched, and about Degraded by 15 dB.

  In particular, in recent years, an antenna of a type built in a housing of a portable wireless device has been widespread for the purpose of improving design and convenience for storing a pocket. In such a built-in antenna, compared with an antenna protruding outside, the antenna portion is easily covered with a hand or a finger, and the above problem becomes more remarkable.

  FIG. 13 is a diagram illustrating the appearance of a CDMA portable wireless device having a built-in antenna. The CDMA portable wireless device 600 is a foldable portable wireless device for solving the above-described problem, and includes an upper housing 601 and a lower housing 602 that are rotatably supported around a hinge portion 605. . A first antenna 603 is built in the upper housing 601. The lower housing 602 includes a second antenna 604. In addition, the portable wireless device 600 is provided with an open / close detection unit 606 (600a, 600b) that detects open / closed states of the upper housing 601 and the lower housing 602.

  FIG. 14 is a diagram illustrating a configuration of an antenna device mounted on the foldable portable wireless device 600. This antenna device includes the first antenna 603, the second antenna 604, the changeover switch 608, the RF unit (wireless circuit) 609, the control unit 607, the open / close detection unit 606, and the like.

  In general, when the portable wireless device 600 is open, communication is often performed and the user communicates by holding the lower casing 602 or the hinge portion 605 with a hand. The user's hand and fingers are difficult to touch. For this reason, when the detection result of the open / close detection unit 606 is in an open state, the control unit 607 transmits a control signal for connecting the first antenna 603 and the RF unit 609 to the changeover switch 608, and The antenna 603 and the RF unit 609 are connected.

  Here, the first antenna 603 is a one-wavelength dipole antenna, and is an antenna that can obtain good communication quality in a call state. The open / close detection unit 606 includes a permanent magnet 606a provided in the upper housing 601 and a magnetic force detector (for example, Hall element) 606b provided in the lower housing 602. When the upper housing 601 and the lower housing 602 are closed, the permanent magnet 606a and the magnetic force detector 606b are close to each other, so that the magnetic force detected by the magnetic force detector 606b is increased. When the body 602 is opened, the permanent magnet 606a and the magnetic force detector 606b move away from each other. Done. The open / close detection unit may have a configuration in which a magnetic force detector is provided in the upper casing 601 and a permanent magnet is provided in the lower casing.

  When the portable wireless device 600 is closed, the mobile wireless device 600 is often in a standby state. When the user grips it with a hand, the position where the hand or finger is difficult to touch is near the hinge portion 605. For this reason, when the detection result of the open / close detection unit 606 is in a closed state, the control unit 607 transmits a control signal for connecting the second antenna 604 and the RF unit 609 to the changeover switch 608, and the second antenna 604 and the RF unit 609 are connected. The second antenna 604 is an unbalanced feed type antenna that also radiates radio waves from the ground pattern on the printed circuit board on which the RF unit 609 is disposed, and thus has high radiation efficiency and is suitable for standby. Thus, communication quality can be improved by detecting the open / closed state of portable radio apparatus 600 and selecting an antenna suitable for each state according to the detection result.

  In recent years, portable wireless devices equipped with an imaging device (camera) have become widespread. Among such portable wireless devices, there is a portable wireless device that includes a plurality of antennas, detects visual information in the vicinity of the portable wireless device with a camera, determines the radio wave propagation environment from the visual information, and selects an antenna. It is known (see, for example, Patent Document 1). More specifically, the portable wireless device calculates the angle of the portable wireless device with respect to a perpendicular from the ground based on the image taken by the camera, and based on this angle information, By selecting an antenna that fits well, good antenna characteristics are realized.

  In addition, with the widespread use of portable wireless devices equipped with such photographing devices, portable wireless devices having a biaxial hinge mechanism (see, for example, Patent Document 2) that have been mounted on video cameras and the like have appeared. Requested by users.

  FIG. 15 is a diagram showing the appearance of a portable wireless device equipped with a biaxial hinge mechanism. This portable wireless device 700 has a structure in which an upper housing 702 and a lower housing 703 are connected via a biaxial hinge 701. An imaging device (camera) 704 is installed in the lower housing 703. When using the telephone function, the portable wireless device 700 can be used with the housing opened like the foldable portable wireless device 600. When the imaging device is used, the portable wireless device 700 is in a position where the screen is easy to see (shooting state). It is possible to shoot fixedly and improve user convenience.

  In addition, portable wireless devices equipped with a plurality of imaging devices are beginning to appear. By installing a plurality of imaging devices, it is possible to use different imaging devices depending on whether the user himself or herself is imaged.

JP 2001-103002 A JP-A-11-247840

  However, the above conventional portable radio apparatus has the following problems, and improvements have been demanded. That is, a portable wireless device having a two-axis hinge mechanism has various usage forms brought about by the two-axis hinge mechanism, which is not possible with a foldable portable wireless apparatus. In portable radio devices, it has been difficult to always ensure good communication quality.

  In addition, in a portable wireless device equipped with an imaging device, when detecting the visual information in the vicinity and performing antenna switching control, if a user's hand or finger is close to the antenna, good communication quality can be ensured. It was difficult.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a portable wireless device capable of ensuring good communication quality in various usage modes provided by a biaxial hinge mechanism. It is in.

The portable radio apparatus according to the present invention includes a first antenna built in the first casing, having a hinge portion that supports the first casing so that the first casing can be opened and closed and rotated. Or a portable wireless device that feeds power between a second antenna built in the second housing and a built-in wireless circuit, wherein the first housing is centered on an opening / closing axis of the hinge portion. Open / close detection means for detecting the open / closed state of the body, rotation detection means for detecting the rotation state of the first casing around the rotation axis of the hinge portion, the open / close state and the rotation state based on a selection means for selecting the antenna to operate from among the first of the first antenna and the second second antenna incorporated in a housing which is built in the housing, the first imaging And the first antenna is provided at an end of the first casing opposite to the hinge portion. Is, the second antenna is provided along the Oite hinge to the hinge portion side end portion of the second housing, wherein the first imaging means, in the vicinity of the second antenna, the hinge characterized in that arranged in the part side.

  With this configuration, it is possible to select an antenna that is not affected by the user's hand or finger from the detection results of the open / close detection means and the rotation detection means, and various effects brought about by the biaxial hinge mechanism Therefore, good communication quality can be ensured in various usage forms. In addition, for example, it is possible to select an appropriate antenna that is not affected by the user's hand or finger in different usage modes, such as a standby state in which two cases are folded and a call state in which two cases are opened, Good communication quality can be ensured in various usage modes provided by the biaxial hinge mechanism. Further, when using the imaging means, for example, since the side surface portion of the second housing is held by hand, good quality can be ensured without the antenna of the hinge portion being covered by the hand.

  Further, the second imaging means is provided in the vicinity of the first antenna.

  With this configuration, for example, the user's hand or finger can be used in different usage modes such as a standby state in which two cases are folded, a call state in which two cases are opened, and a shooting state in which two cases are opened or rotated. An appropriate antenna that is not affected can be selected, and good communication quality can be ensured in various usage modes provided by the two-axis hinge mechanism.

  The selection means selects the first antenna when the detected opening / closing state is an open state and the detected rotation state is a state without rotation, and the detected opening / closing state is selected. When the state is a closed state and the detected rotation state is a no-rotation state, the second antenna is selected, the detected opening / closing state is an open state, and the detected When the turning state is a turning state, the second antenna is selected.

  With this configuration, when the open / close state of the two housings is in the open state and the rotation state is the non-rotation state, the first antenna is selected, and the open / close state of the two housings is in the closed state, When the rotation state is a non-rotation state, when the open / close state of the two casings is the open state and the rotation state is the rotation state, the second antenna is selected to be 2 A first antenna that is not affected by a user's hand or finger in a call state in which two housings are open, and a second antenna that is not affected by a user's hand or finger in a standby state in which two housings are folded It is possible to select a second antenna that is not affected by the user's hand or finger in an appropriate usage pattern in a shooting state in which the two housings are opened and the housings are rotated. Therefore, good communication quality can be ensured in various usage modes provided by the biaxial hinge mechanism.

  Further, the selection means is configured such that when the detected open / closed state is an open state and the detected rotational state is a rotational presence state, the luminance of the first imaging means is the second state. The second antenna is selected when it is larger than the luminance of the imaging means, and the first antenna is selected when the luminance of the first imaging means is smaller than the luminance of the second imaging means. To do.

  With this configuration, when the opening and closing states of the two housings are in the open state and the rotating state is the rotating state, the luminance of the first imaging unit is greater than the luminance of the second imaging unit. When the second antenna is selected and the brightness of the first image pickup means is smaller than the brightness of the second image pickup means, the first antenna is selected to open and rotate the two housings. It is possible to select an antenna that is not affected by the user's hand or finger in the state. Therefore, good communication quality can be ensured in various usage modes provided by the biaxial hinge mechanism.

  The present invention can ensure good communication quality in various usage modes provided by the biaxial hinge mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In this embodiment, a configuration example when applied to a CDMA portable wireless device is shown.

[First Embodiment]
FIG. 1 is a diagram illustrating an appearance of a portable wireless device according to the first embodiment. The portable wireless device 100 includes a biaxial hinge unit 101 that supports the upper housing 103 so as to be openable and closable with respect to the lower housing 105. A first antenna 102 is built in the tip of the upper housing 103 (the end opposite to the hinge 101). A second antenna 104 is built in the front end portion of the lower housing 105 (end portion on the hinge portion 101 side).

  FIG. 2 is a diagram showing a schematic structure of the biaxial hinge unit 101. The biaxial hinge portion 101 has a rotating member 101a, a supporting member 101b, and a fixing member 101c as main members. Both end portions of the fixing member 101 c are fixed to the lower housing 105. A hole is formed in the support member 101b in the axial direction of the opening / closing shaft 106, and a fixing member 101c is fitted in this hole. The support member 101b is rotatable around the fixed member 101c around the opening / closing shaft 106 and is held at an arbitrary angle. One end of the rotating member 101 a is fixed to the end surface of the upper housing 103, and the other end is fitted into a hole formed in the end surface of the supporting member 101 b, and the supporting member is centered on the rotating shaft 107. It is rotatable around 101b and is held at an arbitrary angle.

  In the biaxial hinge 101 having such a structure, the support member 101b rotates around the first axis (opening / closing axis) 106 to open and close the upper casing 103 with respect to the lower casing 105, and the upper casing In a state in which 103 is opened, the rotation member 101a is rotatable about a second axis (rotation axis) 107. The movable range of the support member 101b is α = 0 ° to 160 ° about the first shaft 106, and the movable range of the rotating member 101a is β = 0 ° to 90 ° about the second shaft 107. FIG. 1 shows a state where α = 90 ° and β = 90 °. When α = 0 ° and β = 0 °, the portable wireless device is in a folded state.

  The first antenna 102 is a dipole antenna built in the vicinity of the speaker 108 at the tip of the upper housing 103, and is in a state where α = 160 ° and β = 0 °, that is, a state in which a portable wireless device is opened (for talking) A good antenna gain can be obtained in a call state. On the other hand, as described above, the second antenna 104 is a monopole antenna built in the vicinity of the biaxial hinge unit 101, and α = 0 ° and β = 0 °, that is, the portable wireless device is closed. A good antenna gain can be obtained in the state (standby state).

  The portable wireless device 100 also includes an imaging unit 109 that can capture both moving images and still images, and a switch 110 that instructs the start of shooting. The imaging unit 109 is disposed on the side surface of the lower housing 105 in the vicinity of the biaxial hinge unit 101. The switch 110 is disposed on the side surface of the lower housing 105 opposite to the imaging unit 109.

  FIG. 3 is a diagram illustrating a state where the user captures the subject 111 while holding the mobile wireless device 100 in his / her hand. In the shooting state, the thumb of the user's right hand 112 holds the switch 110, and the user's left hand 113 holds the upper housing 103.

  FIG. 4 is a diagram showing an electrical configuration of the antenna device mounted on the portable wireless device 100. The antenna device includes a switching unit 117, a control unit 116, a radio circuit (RF unit) 118, a first detection unit 114, and a second detection unit 115. The switching unit 117 includes a high frequency switch, and switches the connection between the radio circuit 118 and the first antenna 102 or the second antenna 104. Here, the control part 116 and the switching part 117 comprise the selection means as described in a claim. The first detection unit 114 (corresponding to the opening / closing detection unit described in the claims) detects the open / closed state of the upper housing 103 that rotates about the first shaft 106 of the biaxial hinge unit 101. The second detection unit 115 (corresponding to the rotation detection means described in the claims) is an open / closed state (rotation state) of the upper housing 103 that rotates about the second shaft 107 of the biaxial hinge unit 101. Is detected.

  FIG. 5 is a table showing an angle serving as a threshold for determining the open / close state from the angle α detected by the first detection unit 114 and the angle β detected by the second detection unit 115. That is, when the angle α detected by the first detection unit 114 is 10 ° to 160 °, it is determined to be open, and when the other angle, that is, the angle α is 0 ° to 10 °, it is closed. It is determined that On the other hand, when the angle β detected by the second detection unit 115 is 10 ° to 90 °, it is determined to be open, and when the other angle, that is, the angle β is 0 ° to 10 °, it is closed. It is determined that

  The first detection unit 114 and the second detection unit 115 are each connected to the control unit 116, and transmit an electrical signal indicating the open / close detection result to the control unit 116. The control unit 116 selects the first antenna 102 or the second antenna 104 based on each opening / closing detection result, and transmits the control signal to the switching unit 117. The switching unit 117 connects the wireless circuit 118 and the first antenna 102 or the wireless circuit 118 and the second antenna 104 in accordance with the control signal.

  An antenna switching operation of the portable radio apparatus 100 having the above configuration will be described. FIG. 6 is a table showing antennas selected by the control unit 116 based on the opening / closing detection results of the first detection unit 114 and the second detection unit 115. This table is stored in the ROM in the control unit 116. FIG. 7 is a flowchart showing an antenna switching control processing procedure in the first embodiment. This processing program is stored in the ROM in the control unit 116, and is also executed at predetermined intervals by the CPU in the control unit 116. Instead of being performed every predetermined cycle, when there is a change in the detection results by the first and second detection units, the processing may be executed by interrupt processing.

  First, the opening / closing detection results of the first detection unit 114 and the second detection unit 115 are acquired (step S1). The open / close detection results shown in the table of FIG. 6 are determined (step S2). As a result of detection by the first detection unit 114, the control unit 116 is in a state where the upper housing 103 is open with respect to the lower housing 105 around the first shaft 106, and detection by the second detection unit 115. As a result, when the upper housing 103 is closed with respect to the lower housing 105 around the second shaft 107 (no rotation state), that is, when it is open / closed, the portable wireless device 100 is in a call state. In order to select the first antenna 102 suitable for the call state, the signal for selecting the first antenna is transmitted to the switching unit 117 to switch the antenna (step S3). Then, this process is complete | finished.

  On the other hand, in step S2, the detection result of the first detection unit 114 indicates that the upper housing 103 is closed with respect to the lower housing 105 around the first shaft 106, and the second detection unit 115 As a result of the detection, when the upper housing 103 is closed with respect to the lower housing 105 around the second shaft 107 (without rotation), that is, when it is closed / closed, the portable wireless device 100 is in a standby state. In order to select the second antenna 104 suitable for the standby state, a signal for selecting the second antenna is transmitted to the switching unit 117 to switch the antenna (step S4). Then, this process is complete | finished.

  On the other hand, the detection result of the first detection unit 114 shows that the upper housing 103 is open with respect to the lower housing 105 around the first shaft 106, and the detection result of the second detection unit 115, When the upper housing 103 is open with respect to the lower housing 105 around the second shaft 107 (with rotation), that is, when it is open / open, the portable wireless device 100 is in the photographing state. In order to select and select the second antenna 104 suitable for the shooting state, a signal for selecting the second antenna is transmitted to the switching unit 117 to switch the antenna (step S4). Then, this process is complete | finished.

  In the portable wireless device of this embodiment, the upper housing 103 is structurally closed with respect to the lower housing 105 around the first shaft 106, and the upper housing 103 is in the second shaft 107. In this case, there is no case of being open with respect to the lower housing 105 (with rotation), that is, in the case of closing / opening.

  As described above, the portable wireless device according to the first embodiment includes the first antenna 102 suitable for the call state and the second antenna 104 suitable for the standby state, and is determined from the angle α of the first axis 106. Since the first antenna 102 or the second antenna 104 is selected based on the open / close detection result and the open / close detection result determined from the angle β of the second shaft 107, the antenna is not affected by the user's hand or finger. Can be selected. As a result, good communication quality can be ensured in various usage forms of the CDMA portable wireless device having the biaxial hinge mechanism.

  In the first embodiment, the first antenna 102 is a dipole antenna and the second antenna 104 is a monopole antenna. However, the specification of the antenna is not particularly limited. For example, the same effect can be obtained when at least one of the first antenna and the second antenna is a built-in antenna such as an inverted F antenna or a patch antenna.

  In the first embodiment, the two antennas 102 and 104 are both built-in antennas. However, the present invention is not limited to the built-in antenna. For example, at least one of the first antenna and the second antenna is The same effect can be obtained even if an external antenna such as a whip antenna or a helical antenna is used. In this case, it goes without saying that the external antenna may or may not have elasticity.

  Furthermore, in the first embodiment, the case of two antennas 102 and 104 has been described, but the number of antennas may be three or more. In the first embodiment, two antennas 102 and 104 are arranged in the upper and lower cases, respectively. However, a plurality of antennas 102 and 104 may be arranged only in the upper case 103 or only in the lower case 105. A plurality of them may be arranged.

[Second Embodiment]
FIG. 8 is a diagram illustrating an appearance of the portable wireless device according to the second embodiment. Since the portable radio apparatus according to the second embodiment has substantially the same configuration as that of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. In the portable wireless device 200, an imaging unit is provided in each of the upper housing 103 and the lower housing 105 connected via the biaxial hinge unit 101.

  That is, the first imaging unit 201 is disposed in the vicinity of the first antenna 102 built in the upper housing 103, and the first antenna 102 is built in the vicinity of the second antenna 104 built in the lower housing 105. Two imaging units 202 are arranged. The first imaging unit 201 is for the user to photograph the person, and the photographing direction is the direction indicated by the arrow a in FIG. On the other hand, the second imaging unit 202 is for a user to photograph an object, and the photographing direction thereof is the same as the photographing direction of the imaging unit 109 shown in FIG. 3 of the first embodiment.

  FIG. 9 is a diagram illustrating an electrical configuration of the antenna device and the camera device mounted on the portable wireless device 200. The antenna device has the same configuration as that of the first embodiment. On the other hand, the camera device includes a comparison unit 205, a first luminance detection unit 203, and a second luminance detection unit 204 in addition to the first imaging unit (camera) 201 and the second imaging unit (camera) 202. The first luminance detection unit 203 calculates a first average luminance of the entire image captured by the first imaging unit 201 and outputs the calculated first average luminance to the comparison unit 205. The second luminance detection unit 204 calculates a second average luminance of the entire image captured by the second imaging unit 202 and outputs the calculated second average luminance to the comparison unit 205. The comparison unit 205 compares the input first and second average luminances, and outputs the comparison result to the control unit 116.

  An antenna switching control operation in portable radio apparatus 200 having the above configuration will be described. FIG. 10 is a flowchart showing an antenna switching control processing procedure in the second embodiment. This processing program is stored in the ROM in the control unit 116, and is also executed at predetermined intervals by the CPU in the control unit 116. Instead of being performed every predetermined period, if there is a change in the detection result of the first or second detection unit or the first or second luminance detection unit, it may be executed by interrupt processing. Good.

  First, the opening / closing detection results of the first detection unit 114 and the second detection unit 115 are acquired (step S11). With reference to the table of FIG. 6, the open / close detection result is determined (step S12). As in the first embodiment, the control unit 116 is in a state in which the upper housing 103 is open with respect to the lower housing 105 around the first shaft 106 as a result of detection by the first detection unit 114, and As a result of detection by the second detection unit 115, when the upper housing 103 is closed with respect to the lower housing 105 around the second shaft 107 (without rotation), that is, when it is open / closed, It is determined that the portable radio apparatus 200 is in a call state, and a signal for selecting the first antenna 102 is transmitted to the switching unit 117 in order to select the first antenna 102 (step S13).

  On the other hand, in step S12, the detection result of the first detection unit 114 indicates that the upper housing 103 is closed with respect to the lower housing 105 around the first shaft 106, and the second detection unit 115 As a result of the detection, when the upper housing 103 is closed with respect to the lower housing 105 around the second shaft 107 (without rotation), that is, when it is closed / closed, the portable wireless device 200 is in a standby state. In order to select the second antenna 104, a signal for selecting the second antenna 104 is transmitted to the switching unit 117 (step S14).

  On the other hand, in step S12, the detection result of the first detection unit 114 indicates that the upper housing 103 is open with respect to the lower housing 105 around the first shaft 106, and the second detection unit 115. As a result of the detection, when the upper housing 103 is in the open state (rotation state) with respect to the lower housing 105 around the first shaft 106, that is, in the open / open state, the portable wireless device 200 captures an image. In this case, the comparison result of the comparison unit 205 is further acquired (step S15). Then, as a result of the comparison, it is determined whether or not the first average luminance by the first imaging unit 201 is higher than the second average luminance by the second imaging unit 202 (step S16), and the first average luminance is the first average luminance. If it is higher than the average brightness of 2, the first antenna 102 is selected (step S17). Otherwise, the second antenna 104 is selected (step S18). Then, this process is complete | finished.

  As described above, according to the portable wireless device of the second embodiment, in addition to selecting the first antenna 102 suitable for the call state and the second antenna 104 suitable for the standby state, As a result of detection by the second detection unit, when the upper housing 103 is open with respect to the lower housing 105 around the first shaft 106 and the second shaft 107 (rotating state), the first Since the first antenna 102 or the second antenna 104 is selected based on the comparison result of the first average luminance in the imaging unit 201 and the second average luminance in the second imaging unit 202, the user can An antenna that is not affected by the finger or the finger can be selected. As a result, good communication quality can be ensured in various usage forms of a CDMA portable wireless device having a biaxial hinge mechanism and including an imaging unit.

  In the first and second embodiments, the case where the present invention is applied to a CDMA portable wireless device is shown. However, it is needless to say that the present invention may be applied to a TDMA portable wireless device.

  In the portable wireless device having the two-axis hinge mechanism of the second embodiment, the opening / closing detection results by the first and second opening / closing detection units and the first and second averages by the first and second luminance detection units. The antenna selection control is performed using both of the luminance comparison results, but the straight type portable wireless device (see FIGS. 11 and 12) or the portable wireless device having a single-axis hinge mechanism (see FIG. 13) is used. When applying, antenna selection control may be performed using only the comparison result of the first and second average luminances by the first and second luminance detection units.

  In the second embodiment, the first antenna 102 is a dipole antenna and the second antenna 104 is a monopole antenna. However, the specification of the antenna is not particularly limited. For example, the same effect can be obtained when at least one of the first antenna and the second antenna is a built-in antenna such as an inverted F antenna or a patch antenna.

  In the second embodiment, both of the two antennas 102 and 104 are built-in antennas. However, the present invention is not limited to the built-in antenna. For example, at least one of the first antenna and the second antenna is used. The same effect can be obtained even if an external antenna such as a whip antenna or a helical antenna is used. In this case, it goes without saying that the external antenna may or may not have elasticity.

  Furthermore, in the second embodiment, the case of two antennas 102 and 104 has been described, but the number of antennas may be three or more. In the second embodiment, two antennas 102 and 104 are arranged in the upper and lower cases, respectively. However, a plurality of antennas 102 and 104 may be arranged only in the upper case 103 or only in the lower case 105. A plurality of them may be arranged.

  As described above, according to the present embodiment, good communication quality can be ensured in various types of usage brought about by the biaxial hinge mechanism. Also, good communication quality can be ensured when the imaging device is mounted.

  As described above, the present invention is useful for a portable wireless device or the like that can ensure good communication quality in various usage modes provided by the biaxial hinge mechanism.

Structure explanatory drawing which shows the external appearance structure of the portable radio | wireless apparatus which concerns on 1st Embodiment of this invention. The perspective view which shows schematic structure of the biaxial hinge part in the portable radio | wireless apparatus of this embodiment Explanatory drawing which shows a mode that a user holds the portable radio | wireless apparatus of 1st Embodiment in a hand and image | photographs a to-be-photographed object. The block diagram which shows the electrical connection structure of the antenna apparatus mounted in the portable radio | wireless apparatus of 1st Embodiment. In the first embodiment, a table indicating an angle serving as a threshold for determining the open / close state from the angle α detected by the first detection unit and the angle β detected by the second detection unit In the first embodiment, a table indicating antennas selected by the control unit based on the opening / closing detection results of the first detection unit and the second detection unit The flowchart which shows the antenna switching control processing procedure in 1st Embodiment of this invention. Structure explanatory drawing which shows the external appearance structure of the portable radio | wireless apparatus which concerns on 2nd Embodiment of this invention. The block diagram which shows the electrical connection structure of the antenna apparatus and camera apparatus which were mounted in the portable radio | wireless apparatus of 2nd Embodiment. The flowchart which shows the antenna switching control processing procedure in 2nd Embodiment of this invention. The perspective view which shows the external appearance of the portable radio | wireless apparatus carrying the conventional antenna apparatus The perspective view which shows the external appearance of the portable radio apparatus of a CDMA system The perspective view which shows the external appearance of the portable radio apparatus of a CDMA system which has a built-in antenna The block diagram which shows the structure of the antenna apparatus mounted in the foldable portable radio | wireless apparatus of FIG. The perspective view which shows the external appearance of the portable radio | wireless apparatus carrying a biaxial hinge mechanism

Explanation of symbols

DESCRIPTION OF SYMBOLS 100, 200 Portable radio | wireless apparatus 101 Two-axis hinge part 102 1st antenna 103 Upper housing | casing 104 2nd antenna 105 Lower housing | casing 114 1st detection part 115 2nd detection part 116 Control part 117 Switching part 201 1st 1 imaging unit 202 second imaging unit 203 first luminance detection unit 204 second luminance detection unit 205 comparison unit

Claims (4)

It has a hinge portion for opening and closing and rotatably supporting the first housing to the second housing, the first antenna or the second housing built in the first housing A portable wireless device that feeds power between a built-in second antenna and a built-in wireless circuit,
An open / close detecting means for detecting an open / closed state of the first housing around the open / close axis of the hinge portion;
A rotation detecting means for detecting a rotation state of the first casing around the rotation axis of the hinge portion;
An antenna to be operated is selected from the first antenna built in the first casing and the second antenna built in the second casing based on the open / closed state and the pivoted state. A selection means;
First imaging means,
Wherein the first antenna is provided at the opposite end to the hinge portion of said first housing, said second antenna along the Oite hinge to the hinge portion side end portion of the second housing provided so as to,
The portable radio apparatus according to claim 1, wherein the first imaging unit is disposed on a side surface of the hinge portion in the vicinity of the second antenna.   The portable radio apparatus according to claim 1, wherein a second imaging unit is provided in the vicinity of the first antenna.   The selection means selects the first antenna when the detected opening / closing state is an open state and the detected rotation state is a state without rotation, and the detected opening / closing state is When it is in a closed state and the detected rotation state is a state without rotation, the second antenna is selected, the detected opening / closing state is an open state, and the detected rotation The portable radio apparatus according to claim 1 or 2, wherein the second antenna is selected when the state is a state with rotation. In the case where the detected opening / closing state is an open state and the detected rotation state is a rotation-present state, the selection unit is configured such that the luminance of the first imaging unit is the second imaging unit. The second antenna is selected when the luminance is larger than the luminance of the first imaging means, and the first antenna is selected when the luminance of the first imaging means is smaller than the luminance of the second imaging means. Item 4. The portable wireless device according to Item 2 or 3.

Images