JPWO2008038756A1 - Broadcast radio wave receiver - Google Patents

Abstract

An object of the present invention is to suppress the thickness of a printed wiring circuit board (hereinafter referred to as “PCB board (PRINTED CIRCUIT BOARD)”) and parts as much as possible and ensure sufficient board strength in a broadcast radio wave receiver. Is the main technical issue. A broadcast radio wave receiving apparatus according to the present invention is connected to a host device 20 having a host controller 21 and a digital signal processing unit (back end unit) 22, and transmits data through an external bus interface of the host controller 21. A broadcasting radio wave receiving apparatus 10 for communication, which includes a card controller 11 and a receiving circuit (front end unit) 18 for receiving broadcasting radio waves, and is mounted with components forming the card controller and the receiving circuit. The first printed wiring circuit board 41 is bonded to the second printed wiring circuit board 42 on which the external bus interface terminal 51 and the planar antenna 52 are mounted. [Selection] Figure 5

Description

  The present invention relates to a broadcast radio wave receiving apparatus that can receive broadcast radio waves such as one seg and FM radio by connecting to various portable information terminals such as a notebook personal computer and a PDA (Personal Digital Assistant). .

  Generally, a card (peripheral device) that communicates various data (control signals, data, etc.) through an external bus interface by connecting to a host device (such as a portable information terminal) is a host device side and a card side (peripheral device side). Each is provided with a control chip, and both communicate commands and data with each other. In this specification, the control chip on the host device side is referred to as “host controller”, and the control chip on the card side (peripheral device side) is referred to as “card controller” or “device controller”.

  Therefore, a new function can be added to the host device by connecting various functional modules (for example, a flash memory, a broadcast wave reception function, a wireless communication function, etc.) to the card controller.

Recently, terrestrial digital broadcasting called “1 seg” for mobile terminals has been started, and if there is a receiving terminal dedicated to one seg, it is possible to view the television broadcast at any time within the area of terrestrial digital television broadcasting.
In addition, a digital broadcasting standard called DVB-H (Digital Video Broadcasting for Handheld) for mobile phones has been established, and the digital broadcasting distribution system using a card-type receiving device connected to a mobile phone etc. It is spreading rapidly in each country.

  One of the problems with 1Seg is that broadcast radio waves are very weak, so in areas where it is difficult for radio waves to reach, such as in tunnels, basements, and buildings, sufficient reception sensitivity cannot be obtained even within the broadcast area. It is in that point. One-segment receivers currently on the market are known as card-type one-segment tuners that connect to external interfaces such as USB (Universal Serial Bus) terminals in addition to mobile phones. Also, a rod antenna (whipped antenna) of about 6 cm to 8 cm is provided.

  Although there is no mention of 1Seg, if an antenna is provided in a card-type receiving device (card-type device) connected to the information terminal device, the appearance may be impaired, and portability, operability, etc. may be adversely affected. Therefore, a technique is known in which an antenna is not required for a card-type device by mounting an antenna on the information terminal device side to which the card is connected (Patent Document 1).

JP 2005-252386 A

  By the way, among peripheral devices connected to the external bus interface of the host device, card-type devices are limited in the degree of freedom in housing design because the slot width and thickness, terminal pitch, etc. are defined by the standard. However, there is no particular limitation on the length direction. However, in general, the longer the housing, the weaker the stress is, and it is difficult to obtain sufficient mechanical strength. For this reason, when providing a function that requires an antenna such as one-segment broadcasting or FM radio, it is always a problem how to mount the antenna.

  In addition to the problems of poor appearance, portability, and operability, the structure for attaching the rod antenna (whipped antenna) to the casing of the peripheral device has the above-described mechanical strength problem. Therefore, in order to realize a functionally and aesthetically refined shape, a design that comprehensively considers these problems is required.

For example, if a one-segment tuner function is added to an SDIO (Secure Digital Input Output) card, a host device (for example, a notebook personal computer or a portable information terminal) equipped with an SD bus slot can have a one-segment reception function. However, in order to install a module and an antenna for realizing a 1Seg reception function on a small housing SDIO card, the printed circuit board (hereinafter referred to as “PCB board (PRINTED CIRCUIT BOARD)” It is necessary to ensure sufficient mechanical strength.
Moreover, it is preferable to secure a mechanical strength that is as compact as possible even for a connector whose shape is defined by a standard, such as USB.

  The main technical object of the present invention is to ensure sufficient mechanical strength while minimizing the thickness of a PCB board and components as much as possible in a broadcast radio wave receiver connected to a host device as a peripheral device.

  The broadcast radio wave receiving apparatus according to the present invention is connected to a host device 20 having a host controller 21 and a digital signal processing unit (back end unit) 22 and communicates data via an external bus interface of the host controller 21. The receiving device 10 includes a card controller 11 and a receiving circuit (front end unit) 18 for receiving broadcast radio waves, and a first print on which components forming the card controller and the receiving circuit are mounted. The wiring circuit board 41 is bonded to a second printed wiring circuit board 42 on which the external bus interface terminal 51 and the planar antenna 52 are mounted.

  Since the broadcast radio wave receiving apparatus according to the present invention includes a highly sensitive planar antenna inside, it is not necessary to provide a rod antenna or the like outside as in the prior art. Therefore, the appearance is not impaired, the convenience is improved, and the mechanical strength of the housing of the apparatus, particularly the inside is secured. The “planar antenna” is intended to include a linear pattern antenna, a closed loop antenna (loop antenna), a surface mount chip antenna, and the like.

  The receiving apparatus preferably includes an external antenna connector (or also referred to as an “RF coaxial connector switch”) 31 for connecting an external antenna. This is because when an external antenna can be used, such as when used indoors, an external antenna can be connected to the external antenna connection connector 31 as necessary, and broadcast waves can be received stably. .

  The external bus interface can be configured as SDIO or USB, and the receiving circuit can be configured as a terrestrial digital broadcast receiving circuit.

  The card controller may further include a memory interface, and a memory device may be connected to the memory interface so that data received by the receiving circuit can be recorded. In this case, in particular, it is preferable that the memory device is a card-type device and is detachable from the broadcast radio wave receiving apparatus. According to such a configuration, recording can be performed on a new memory card as necessary. Therefore, convenience is enhanced by adding a recording or reproducing function in addition to the function of viewing broadcast radio waves.

  Further, when mounting components on the first printed circuit board 41, a component mounting prohibited area I is provided in the central portion (or including the vicinity thereof) in the longitudinal direction, and components are mounted separately on both sides thereof. Preferably it is. This is because bending stress is likely to concentrate on the weak portion at the central portion in the longitudinal direction of the apparatus main body and the vicinity thereof, and thus mounting can prevent the mounting components near the weak portion from being stressed.

  In this case, both sides of the stress line (XX) in which the joint portion of the first printed circuit board 41 and the second printed circuit board 42 crosses the longitudinal center of the first substrate vertically. Is preferably provided.

  On the other hand, when many parts are made into chips and the number of parts decreases, the degree of freedom of circuit arrangement may be lost. As described above, there may be a case where the component mounting prohibited area cannot be provided for convenience of mounting. In such a case, it may be configured such that a widened region of the same degree as that of the mounted component is provided. According to such a configuration, the bending stress is dispersed, and the substrate strength can be further increased.

(First embodiment)
As an example of the broadcast radio wave receiving apparatus according to the present invention, an example will be described in which a function for receiving one-segment (terrestrial digital broadcasting for portable terminals) is added to an SDIO card.

  The SDIO card is a card that is upwardly compatible with the SD memory card. By connecting the SDIO card controller to a one-seg receiving module (referred to as “one-seg tuner module” in this specification) and a predetermined circuit, a host is provided. One-segment broadcasting radio waves can be received by the device.

  The card side includes a receiving unit (front end unit) and an SDIO card controller (hereinafter simply referred to as “SDIO controller”), and the host device side includes an SDIO host controller and a digital signal processing unit (back end unit). It has. The front-end unit on the SDIO card side is composed of an RF unit and an OFDM (orthogonal frequency division multiplexing) demodulator, and a TS (Transport Stream) signal is sent to the back-end unit on the host device side via the SD bus. A moving image is reproduced by performing digital signal processing (decoding a compressed digital signal or the like).

  Since the host controller and the digital signal processing unit (back end unit) are usually provided on the host device side, the card side only requires the receiving unit (front end unit) and the card controller. The number of parts mounted on the device side is reduced. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol shall show the same site | part.

  FIGS. 1A and 1B are diagrams for explaining a first embodiment of the present invention, and are referred to as an SDIO card type one-segment tuner (hereinafter referred to as “SD one-segment tuner”) used by being connected to an SDIO terminal. ) Shows an example of a block diagram. Among these, FIG. 1A shows the configuration on the SDIO card side, and FIG. 1B shows the configuration on the SDIO host device side.

  As shown in FIG. 1A, an SD one-segment tuner 10 includes an SDIO controller 11, an EEPROM 12, a crystal oscillator (TCXO) 13, a one-segment tuner module 14, a low saturation regulator (LDO) 15, and an antenna control circuit. 16 and an antenna 17.

  The reception circuit (front end unit) 18 includes a one-segment tuner module 14, a low saturation regulator (LDO) 15, an antenna control circuit 16, and an antenna 17. The EEPROM 12 stores firmware and the like necessary for operating the one-segment tuner 10.

  As shown in FIG. 1B, the host device 20 includes an SDIO host controller 21 and a back end unit 22, and an SDRAM 23 is connected to the controller of the back end unit.

Note that the SDIO host controller and the SDIO host controller are controlled by a tuner for communication using, for example, an I ² C serial bus, and communication of moving image information is H.264. H.264 TS (Transport Stream). H. H.264 is a communication standard for moving image compression.

  2 and 3 are each a six-sided view showing the appearance of the one-segment tuner card according to the first embodiment of the present invention. 2A is a plan view of the card, FIG. 2B is a right side view, and FIG. 2C is a front view. 3D is a rear view of the card, FIG. 3E is a left side view, and FIG. 3F is a bottom view.

  As shown in these figures, there is an antenna housing 30 at the rear end of the housing, but there is no antenna or other protrusions, and the design is neatly compact. As shown in the rear view of FIG. 3D, an external antenna connection connector (RF coaxial connector switch) 31 is provided on the back of the card. As will be described later, a flat antenna is built in the main body of the antenna housing 30. However, when the antenna housing 30 can be used indoors, the external antenna is connected to the external antenna connection connector 31 as necessary. This is because the broadcast radio waves can be received stably. Note that when the external antenna is connected to the external antenna connector, the internal antenna is mechanically cut.

  The terminal portion connected to the SD bus slot and the width and thickness of the card conform to the standards defined by the SD card association. However, the card insertion direction (length direction) and the shape of the rear end of the card case are not particularly defined, so the required volume is secured at the rear end of the card case, and a flat antenna is built in this part. However, if this portion is too large, it not only impairs the appearance but also decreases the mechanical strength, so it is preferable to design the antenna housing 30 to a minimum size.

  FIG. 4A is a cross-sectional view taken along the line XX in FIG. 2C, and is a view for explaining the internal structure of the one-segment tuner according to the present invention. In particular, the substrate configuration will be described. FIG. 4B shows an exploded view of FIG. As shown in this figure, the inside has a structure in which two PCB boards 41, 42 are housed in a housing composed of an upper case 43 and a lower case 44.

  Among these, the first PCB board 41 is a component mounting board, and is composed of, for example, a halogen-free FR-4 / Hi-Tg (high glass transition temperature) four-layer board having a thickness of 0.3 mm. Note that the second to fourth layers are configured such that a power supply line, a TS signal line, a control signal line, and the like are printed and wired.

  FIG. 5A shows a front view of the first PCB substrate 41. As shown in this figure, an SDIO controller, a one-segment tuner module, an RF coaxial connector switch 31, and the like are mounted on this board, but an SDIO terminal and an antenna are not mounted.

  FIG. 5B shows a front view of the second PCB substrate 42. This board is exclusively a board for mounting SDIO terminals and antennas, and plays a role of ensuring the strength of the entire product. The second PCB substrate 42 is composed of, for example, a halogen-free FR-4 two-layer substrate having a thickness of 0.9 mm. As shown in the figure, a 9-pin SDIO terminal 51 and a pattern antenna 52 are printed on the circuit board with a metal foil.

  Further, as shown in FIG. 5B, a rectangular frame 53 is provided at the center of the substrate. Then, when the second PCB substrate 42 shown in FIG. 5B is superimposed on the first PCB substrate 41, the components mounted on the first PCB substrate 41 through the frame portion 53 are accommodated in the frame portion. In this way, the strength of the substrate is increased by overlapping and joining the two substrates.

  A large number of end surface through holes 54 are provided along the end surface of the frame portion, and a pad 55 for connection to the first PCB substrate 41 is provided in the vicinity of the RF coaxial connector switch 31. .

  FIG. 6 shows a second layer wiring pattern of the second PCB substrate 42. By being electrically connected to the pattern of the first layer shown in FIG. 5B through the end surface through hole 54, that is, by being spirally mounted over the front and back surfaces of the second PCB substrate 42, The pattern antenna 52 is configured. This is a kind of linear antenna, and the reason for making it spiral is to gain length.

  Various antenna shapes are conceivable, and instead of the above-described linear pattern antenna, a loop antenna (closed loop antenna), a surface mount chip antenna, or the like may be mounted.

In this way, by separating the PCB board into a component mounting board, an external bus interface terminal (SDIO terminal in the first embodiment) and an antenna mounting board, mounting them on separate boards, and bonding them together later, It has succeeded in securing the substrate strength while suppressing the overall thickness.
In the prototype, the thickness of the slot insertion part including the upper case and the lower case is 2.23 mm maximum, the antenna housing part is 4.7 mm, and sufficient mechanical strength is ensured. confirmed.

  As described above, since the broadcast radio wave receiving apparatus according to the present invention has the planar antenna built in the card, it is not necessary to provide a rod antenna outside. Therefore, the appearance and convenience are good, and the reception sensitivity is also good.

(Modification of the first embodiment)
The above-mentioned broadcast radio wave receiving apparatus adds a function of receiving one seg (terrestrial digital broadcasting for portable terminals) to the SDIO card, but the same applies when the external bus interface is USB (Universal Serial Bus). It is. USB is not a “card”, but is a bus connector for connecting peripheral devices to a host device, and the present invention can be applied as it is in the same way as an SDIO card or the like in that the shape is defined by the standard. A modification of the first embodiment will be described below.

  FIGS. 7A and 7B are diagrams for explaining a modification of the first embodiment of the present invention, and show an example of a block diagram of a USB device type one-segment tuner used by being connected to a USB terminal. ing. 7A shows the configuration on the card side (peripheral device side), and FIG. 7B shows the configuration on the host device side.

  As apparent from the comparison with FIG. 1, the control chip on the card side (peripheral device side) is changed from the SDIO controller 11 to the USB device controller (strictly speaking, the USB device is not necessarily a “card”, so it is more than the “card controller”. “Device controller” is more appropriate.) 71, while the control chip (host controller) on the host device side is changed to the USB host controller 81. Other circuit configurations are shown in FIG. It is the same. Therefore, according to the first embodiment, the first printed wiring circuit board on which the components forming the USB card controller and the broadcast wave reception circuit are mounted, the second printed circuit board on which the external bus interface terminal and the planar antenna are mounted. A card-type broadcast radio wave receiver that can be connected to a USB is completed by a configuration in which the printed circuit board is bonded to the printed circuit board.

  Thus, the broadcast radio wave receiving apparatus according to the present invention can be applied regardless of the type of external bus interface. For example, the same applies when the external bus interface is a PCMCIA interface, a card bus interface, or the like.

(Board strength increasing means)
In order to further improve the reliability of products in mass production, it is necessary to further increase the substrate strength. This is especially true if the antenna housing becomes large or the entire device becomes vertically long due to the internal circuit. An effective means for increasing the substrate strength, which has been clarified by further studies by the inventors, will be described.

  Fig.9 (a) is a figure for showing the external shape of the broadcast radio wave receiver 10 which concerns on this invention. FIG. 9B is a diagram schematically showing how the mounted component is damaged due to stress concentration. As shown by arrows in FIG. 9A, it can be seen that bending stress tends to concentrate on a stress line (XX) perpendicularly crossing the longitudinal direction of the apparatus. Although the position of the stress line (XX) varies depending on the shape and structure of the apparatus, it can be assumed that the stress line (XX) normally crosses substantially the center in the longitudinal direction.

  In such a case, as shown in FIG. 9B, among the components mounted on the first PCB substrate 41, the electronic parts of the fragile portion where bending stress is most likely to be concentrated are damaged, Experiments have revealed that soldering of mounted parts is torn. In particular, when the mounting component is an IC chip, soldering such as BGA (ball grid array) is applied, but when these parts are stressed, they are easily torn.

  FIGS. 10A and 10B and FIGS. 11A and 11B are diagrams for explaining an embodiment of the substrate strength increasing means.

-First means-
As shown in FIG. 10A, a first countermeasure against this problem is to provide a component mounting prohibition area I in the central portion in the longitudinal direction of the first PCB 41, and to mount the components other than this ( This is performed in the component mounting area II ”.

  FIG. 10B is a diagram showing a state in which components are mounted on the first printed circuit board 41. It can be seen that all the electronic components to be mounted are provided on both sides of the component mounting prohibited area I, that is, inside the component mounting possible area II. By mounting in this way, it is possible to prevent the mounting component from being stressed.

-Second means-
As shown in FIG. 11 (a), the second countermeasure against this problem is a stress line (X−) crossing the joint portion of the first PCB substrate 41 and the second PCB substrate 42 perpendicularly to the central portion in the longitudinal direction. X) is provided on both sides. The second countermeasure can be further implemented in addition to the first countermeasure.

  Bonding on the first PCB substrate and the second PCB substrate can be performed by soldering or the like. In this case, two points are provided on both sides of the stress line (XX) perpendicularly crossing the central portion in the longitudinal direction. Soldering is performed (at least four places in a pair facing each other). Thus, the upper and lower two substrates are securely coupled on the stress line XX that becomes the weakened portion, and the overall substrate strength is improved.

-Third means-
On the other hand, when many parts are made into chips and the number of parts is reduced, the chip area is increased and the degree of freedom of circuit arrangement is lost. Due to such mounting reasons, there is a case where the component mounting prohibited area cannot be provided.

  Thus, when a large-area chip is mounted across the component mounting prohibition region I on the first PCB substrate, it is preferable to provide a widened region for reinforcing the fragile portion on the second PCB substrate. .

  In FIG. 11B, a chip 110 having a large area is arranged across the component mounting prohibited area I on the first PCB board, and a widened area III for reinforcing the weak part is provided on the second PCB board. It shows a state. According to such a configuration, the substrate strength can be further increased along with the diffusion of the portion where the bending stress is concentrated.

(Second Embodiment)
In the first embodiment and its modification, except for the tuner control signal, the TS (Transport Stream) signal is transmitted from the card side (peripheral device side) to the host side exclusively through the external bus interface (SD bus, USB, etc.). In this sense, that is, only the function of “viewing” broadcast radio waves is realized.

  However, if a memory device is further added to the configuration on the card side (peripheral device side), the TS signal transmitted to the host device side is branched and the digital signal of the TS signal is provided in this memory device provided on the card side (peripheral device side). Information can be recorded and played back. Hereinafter, a specific example will be described.

  FIG. 8 is a diagram for explaining the second embodiment of the present invention, and shows an example of a block diagram of the card side (peripheral device side) device 90 when the external bus interface is USB. The configuration on the host device side is the same as that shown in FIG. Also, the description of the mounting using two PCB substrates is omitted according to the first embodiment.

  The difference from FIG. 7A is that a memory device 91 is connected to the USB device controller 71. To connect the memory device, specifically, it is only necessary to connect to a memory interface included in the USB device controller 71 (this is an internal interface of the controller and is not shown), and the mounting of the memory device is particularly difficult. It's not something. This is because it is a well-known technique that a USB device can be configured as a storage device as represented by “USB memory”. This is the same even when the external bus interface is changed from USB to SD bus.

  In such a configuration, for example, functions such as recording start, end, playback, fast forward, rewind, pause, etc. need to define a protocol in advance between the host device side and the card device side. In this case, several types of commands may be defined in advance between the device controller (card controller) and the host controller. If necessary, the device controller may be equipped with a microcomputer or the like.

  As described above, when the card side (peripheral device side) device includes a memory device for storing data, data sent to the back-end unit of the host device can be recorded in the memory device. In particular, since recent semiconductor memories have a large storage capacity, even if there are several gigabytes, for example, even a large amount of data such as moving image data, a sufficiently practical recording function can be realized. Is possible.

  Several methods are conceivable for providing the nonvolatile memory. The simplest method is to directly mount a flash memory chip on the first PCB substrate. However, in this case, the storage capacity is limited and the memory cannot be replaced, so that the convenience is inferior. . Therefore, the card controller (device controller) has a memory interface corresponding to the type of memory device, and a memory card slot is mounted on the first PCB board so that a card-type memory device (memory card) can be inserted and removed. Consistency increases when configured.

  The type of memory card is not particularly limited, but a relatively small memory card such as a Mini-SD or Micro-SD card is easy to handle. For example, a USB-SD device controller having a USB / SD bus protocol conversion engine is commercially available. Therefore, when this is used, the TS signal from the tuner is transmitted to the host device side, while the device controller branches the TS signal and connects the Mini-SD or Micro-SD card via the SD memory interface. It can be easily realized.

  In the embodiment, an example of a one-segment tuner connected to an SDIO card or a USB has been described. However, mounting a PCB substrate using two layers or mounting a planar antenna on a second PCB substrate is particularly a one-segment tuner. Of course, the present invention is not limited to broadcasting, but can be applied to cases where FM broadcasting and other broadcasting radio waves are received. In this case, it goes without saying that a predetermined antenna shape is selected depending on the frequency of the received radio wave. Further, the case where the SDIO card is used and the case where the USB device (card) is used as the external bus interface with the information terminal device has been described, but the same applies to other interface cards.

  The broadcast radio wave receiving apparatus according to the present invention can incorporate a high-sensitivity planar antenna in the apparatus main body while enhancing the substrate strength, so that an external antenna such as a rod antenna is not required, and appearance and convenience are improved. . Further, when the card side (peripheral device side) device is equipped with a memory device, data reproduced on the host device side can be recorded, so that the added value as a product can be further increased. Therefore, the industrial applicability of the present invention is great.

FIGS. 1A and 1B are diagrams for explaining a first embodiment of the present invention, and show an example of a block diagram of an SDIO card type one-segment tuner. FIGS. 2A to 2C show the appearance of the one-segment tuner card according to the first embodiment of the present invention. FIG. 2A is a plan view of the card, and FIG. Is a right side view, and FIG. 2 (c) is a front view. FIGS. 3D to 3F show the appearance of the one-segment tuner card according to the first embodiment of the present invention. FIG. 3D is a rear view of the card, and FIG. The left side view and FIG. 3 (f) are bottom views. FIG. 4A is a cross-sectional view taken along the line XX in FIG. 2C, and is a view for explaining the internal structure of the one-segment tuner according to the present invention. FIG. 4B shows an exploded view of FIG. FIG. 5A shows a front view of the first PCB substrate 41. FIG. 5B shows a front view of the second PCB substrate 42. FIG. 6 shows a second layer wiring pattern of the second PCB substrate 42. FIGS. 7A and 7B are diagrams for explaining a modification of the first embodiment of the present invention, and show an example of a block diagram of a USB device type one-segment tuner. 7A shows the configuration on the card side (peripheral device side), and FIG. 7B shows the configuration on the host device side. FIG. 8 is a diagram for explaining the second embodiment of the present invention, and shows an example of a block diagram of a card side (peripheral device side) device when the external bus is a USB. Fig.9 (a) is a figure for showing the external shape of the broadcast radio wave receiver 10 which concerns on this invention. FIG. 9B is a diagram schematically showing how the mounted component is damaged due to stress concentration. FIGS. 10A and 10B are diagrams for explaining an embodiment of the substrate strength increasing means. FIGS. 11A and 11B are diagrams for explaining an embodiment of the substrate strength increasing means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Broadcasting wave receiver 20 Host apparatus 30 Antenna accommodating part 31 External antenna connection connector (RF coaxial connector switch)
41 First PCB substrate 42 Second PCB substrate

Claims (9)

A broadcast radio wave receiving apparatus connected to a host device including a host controller and a digital signal processing unit and communicating data through an external bus interface of the host controller,
A card controller and a receiving circuit for receiving broadcast radio waves, and a first printed circuit board on which the card controller and the components forming the receiving circuit are mounted, an external bus interface terminal, and a planar antenna A broadcast radio wave receiver characterized by being bonded to the second printed circuit board. The broadcast radio wave receiver according to claim 1, wherein the receiver includes an external antenna connection connector for connecting an external antenna. 3. The broadcast radio wave receiving apparatus according to claim 1, wherein the external bus interface is SDIO or USB. 4. The broadcast radio wave receiving apparatus according to claim 1, wherein the receiving circuit is a terrestrial digital broadcast receiving circuit. 5. The card controller according to claim 1, further comprising a memory interface, wherein a memory device is connected to the memory interface, whereby data received by the receiving circuit can be recorded. The broadcast radio wave receiver according to item 1. 6. The broadcast radio wave receiving apparatus according to claim 5, wherein the memory device is a card-type device and is detachable from the broadcast radio wave receiving apparatus. 7. The first printed circuit board according to claim 1, wherein a component mounting prohibition region is provided at a central portion of the first printed circuit board, and components are mounted separately on both sides thereof. Broadcasting radio wave receiver. The joint portions of the first printed circuit board 41 and the second printed circuit board 42 are provided on both sides of a stress line (XX) perpendicularly crossing the longitudinal center of the first substrate. The broadcast radio wave receiving apparatus according to claim 7, wherein: 7. The second printed wiring board according to claim 1, wherein a mounting component is provided in a central portion where bending stress is concentrated, and a widened area of the same degree as the mounting component is provided. The broadcast radio wave receiver according to the item.

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