WO2008038756A1

WO2008038756A1 - Broadcast radio wave receiving apparatus

Info

Publication number: WO2008038756A1
Application number: PCT/JP2007/068945
Authority: WO
Inventors: Toao Ishida; Katsuhiro Hirayama
Original assignee: Zentek Technology Japan, Inc.
Priority date: 2006-09-28
Filing date: 2007-09-28
Publication date: 2008-04-03
Also published as: JPWO2008038756A1

Abstract

[PROBLEMS] To reduce the thicknesses of the printed circuit board (which will be referred to as 'PCB board' hereinafter) and components by as much as possible, while ensuring a sufficient board strength, in a broadcast radio wave receiving apparatus. [MEANS FOR SOLVING PROBLEMS] A broadcast radio wave receiving apparatus (10) is connected to a host device (20), which includes a host controller (21) and a digital signal processing part (back-end part) (22), to implement a data communication via an external bus interface of the host controller (21). The broadcast radio wave receiving apparatus (10) comprises a guard controller (11) and a receiving circuit (front-end part) (18) for receiving broadcast radio waves. The broadcast radio wave receiving apparatus (10) has a structure where a first printed circuit board (41), on which the components constituting the guard controller and receiving circuit are mounted, is affixed to a second printed circuit board (42) on which an external bus interface terminal (51) and a planer antenna (52) are mounted.

Description

Specification

Broadcast radio wave receiver

Technical field

[0001] The present invention relates to a broadcast radio wave receiving device that enables reception of broadcast radio waves such as 1seg FM radio by connecting to various personal digital assistants such as notebook computers and PDAs (Personal Digital Assistants). It is about.

Background art

[0002] Generally, a card (peripheral device) that communicates various data (control signals and data, etc.) through an external bus interface by connecting to a host device (such as a portable information terminal) A control chip is provided on each side (peripheral device side), and both communicate commands and data with each other. In this specification, the control chip on the host device side is called “host controller”, and the control chip on the card side (peripheral device side) is called “card controller” or “device controller”! /.

[0003] Therefore, by connecting various function modules (for example, flash memory, broadcast radio wave reception function, wireless communication function, etc.) to the card controller, it is possible to add a new function to the host device with the power S.

[0004] Recently, digital terrestrial broadcasting for mobile terminals called “lseg” has been started, and if there is a receiving terminal dedicated to 1Seg, it is possible to watch TV broadcasting anytime within the area of terrestrial digital TV broadcasting. Les.

In addition, a digital broadcasting standard for mobile phones called DVB-H (Digital Video Broadcasting for Handheld) has been established, and digital broadcasting distribution systems using card-type receivers connected to mobile phones etc. It is spreading rapidly in each country.

[0005] One of the problems with 1Seg is that the broadcast radio wave is very weak, so in areas where it is difficult for radio waves to reach, such as in tunnels, underground, buildings, etc., sufficient reception sensitivity even within the broadcast area Is that you can not get. One-seg receivers currently on the market connect to external interfaces such as mobile phones and USB (Universal 'Serial' Bus) terminals. The following card type one-seg tuner is known, and the card type device itself is provided with a rod antenna (whipped antenna) of about 6cm to 8cm!

[0006] Although there is no mention of 1Seg, if a card-type receiving device (card-type device) connected to an information terminal device is provided with an antenna, the appearance may be impaired, and portability, operability, etc. A technology that eliminates the need for an antenna in a card-type device by mounting an antenna on the information terminal device side to which the card is connected is known (Patent Document 1).

[0007] Patent Document 1: Japanese Patent Laid-Open No. 2005-252386

Disclosure of the invention

Problems to be solved by the invention

[0008] By the way, among peripheral devices connected to the external bus interface of the host device, the card type has the slot width and thickness or the terminal pitch determined by the standard. There are no particular restrictions on the length direction of the force where the degree is limited. However, in general, the longer the casing, the weaker the stress, and it is difficult to obtain sufficient mechanical strength. For this reason, when installing a function that requires an antenna such as an FM radio, it is always a problem how to install the antenna.

[0009] In addition to the problems of poor appearance, portability, and operability, the structure for mounting the rod antenna (whip antenna) described above on the casing of the peripheral device has the above-mentioned problem of mechanical strength. Therefore, in order to realize a functionally and aesthetically refined shape, a design that comprehensively considers these problems is required.

[0010] For example, if a one-segment tuner function is added to an SDIO (Secure Digital Input Output) card, a one-segment reception function can be provided to a host device (eg, a notebook computer or a portable information terminal) equipped with an SD bus slot. Force that can be held In order to install a module or antenna for realizing the 1Seg reception function in the SDIO force of a small housing, it is necessary to install the printed circuit board (hereinafter referred to as “PCB” It is necessary to secure sufficient mechanical strength of the printed circuit board (PRINTED CI RCUIT BOARD) and! /, U.).

In addition, it is preferable to ensure that the connector shape is as compact as possible and has sufficient mechanical strength, such as USB. [0011] The main technique of the present invention is to ensure sufficient mechanical strength while minimizing the thickness of a PCB substrate and components in a broadcast radio wave receiver used as a peripheral device connected to a host device. As an objective.

Means for solving the problem

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 (knock end unit) 22, and communicates data through an external bus interface of the host controller 21. Broadcasting radio wave receiver 10 that receives the radio wave from the card controller 11 (front end section) 1

And a second printed wiring board on which an external bus interface terminal 51 and a planar antenna 52 are mounted, a first printed wiring circuit board 41 on which the components forming the card controller and the receiving circuit are mounted. It is characterized by being bonded to the circuit board 42.

[0013] Since the broadcast radio wave receiving apparatus according to the present invention includes a high-sensitivity 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 device casing, particularly the inside, is secured. The term “planar antenna” means a linear pattern antenna, a closed loop antenna (loop antenna), a surface mount chip antenna, and the like.

[0014] In addition, the receiving device is also referred to as an "RF coaxial connector switch" for connecting an external antenna to an external antenna. ) 31 is preferable. When an external antenna is available, such as when used indoors, an external antenna can be connected to the external antenna connector 31 as necessary, enabling stable reception of broadcast radio waves. Because.

[0015] 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.

[0016] Further, the card controller further includes a memory interface, and a memory device is connected to the memory interface so that data received by the receiving circuit can be recorded. Also good. In this case, in particular, the memory device is a card-type device, and the broadcast radio wave reception It is preferably removable from the device. According to such a configuration, it is possible to record on a new memory card as needed, so that convenience is enhanced by adding a recording or playback function in addition to the function to watch broadcast waves! .

[0017] When mounting components on the first printed circuit board 41, a component mounting prohibited area I is provided in the longitudinal center and the vicinity thereof, and the components are separated on both sides. Is preferably implemented. This is because the bending stress is likely to concentrate on the brittle portion at the central portion in the longitudinal direction of the apparatus main body and the vicinity thereof, so that mounting can prevent the stress from being applied to the mounted components near the fragile portion.

[0018] In this case, a stress line (X--) where the joint portion of the first printed circuit board 41 and the second printed circuit board 42 is perpendicularly crossing the longitudinal center of the first substrate. X) Provided on both sides of! /, S power!

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. In this way, there are cases in which a component mounting prohibited area cannot be provided due to mounting reasons. In such a case, it may be configured such that a widened area 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.

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] (First embodiment)

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

[0021] The SDIO card is a card that is upwardly compatible with the SD memory card, and connects the SDIO card controller with a one-seg receiving module (referred to as "one-seg tuner one module" in this specification) and a predetermined circuit. As a result, the host device can receive one-segment broadcasting radio waves.

[0022] 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). End portion). The front-end part on the SDIO card side consists of an RF part and an OFDM (Orthogonal Frequency Division Multiplexing) demodulator. The tre signal is sent to the host device's back-end via the SD bus, where digital signal processing (decoding of the compressed digital signal, etc.) is performed to reproduce the moving image. .

[0023] Since the host controller and the digital signal processing unit (back-end unit) are normally provided on the host device side, the card side only requires a receiving unit (front-end unit) and a card controller. The number of parts mounted on the side (peripheral 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. 1 (a) and 1 (b) are diagrams for explaining a first embodiment of the present invention. An SDIO card type one-segment tuner (hereinafter referred to as “SD one-segment”) used by being connected to an SDIO terminal. This is an example of a block diagram of a tuner. Of these, Fig. 1 (a) shows the configuration on the SDI O card side, and Fig. 1 (b) shows the configuration on the SDIO host device side.

[0025] As shown in Fig. 1 (a), the SD one-segment tuner 10 includes an SDIO controller 11, an EEPROM 12, a crystal oscillator (TCXO) 13, a one-segment tuner module 14, and a low saturation regulator (LDO) 15 And an antenna control circuit 16 and an antenna 17.

Note that the receiving 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. 1 (b), the host device 20 includes an SDIO host controller 21 and a backend unit 22, and an SDRAM 23 is connected to the controller in the backend unit.

[0028] Note that the SDIO host controller and SDIO host controller, the communication of the communication for controlling the tuner, for example I ² C serial bus power video information Η · 264TS (Transport Str earn) is performed. H.264 is a communication standard for video compression.

FIG. 2 and FIG. 3 are 6-side views showing the external appearance of the one-segment tuner card according to the first embodiment of the present invention. 2 (a) is a plan view of the card, FIG. 2 (b) is a right side view, and FIG. 2 (c) is a front view. Fig. 3 (d) is the rear view of the card, and Fig. 3 (e) is the left side. Fig. 3 (f) shows the bottom view.

[0030] As shown in these drawings, a force antenna having an antenna housing portion 30 at the rear end of the casing is a design in which antennas and other protrusions are neatly gathered in a compact manner. Further, as shown in the rear view of FIG. 3 (d), an external antenna connection connector (RF coaxial connector switch) 31 is provided on the back of the card. As will be described later, the antenna housing 30 has a built-in flat antenna inside the main body S. When using indoors, such as when using indoors, connect the external antenna to the external antenna connection connector 31 as necessary. This is because it can be connected, and this enables stable reception of broadcast radio waves. The internal antenna is mechanically disconnected when an external antenna is connected to the external antenna connector.

[0031] 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. Therefore, a structure that secures the required volume at the rear end of the card case is used, and a planar antenna is installed in this part. It is preferable to design to the minimum size because the force S provided with the antenna storage section 30 for the built-in, and if this portion is too large, not only the appearance is impaired but also the mechanical strength is lowered.

FIG. 4 (a) is a cross-sectional view taken along the line XX in FIG. 2 (c), 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. 4 (b) shows an exploded view of FIG. 4 (a). As shown in this figure, the inside has a structure in which two PCB substrates 41, 42 are housed in a casing composed of an upper case 43 and a lower case 44.

[0033] Among these, the first PCB board 41 is a component mounting board, and is composed of, for example, a 4-layer board of halogen-free FR-4'Hi-Tg (high glass transition temperature) having a thickness of 0.3 mm. Note that the second to fourth layers have a configuration in which power lines, TS signal lines, control signal lines, and the like are printed out.

FIG. 5 (a) shows a front view of the first PCB substrate 41. As shown in this figure, the SDIO controller, one-segment tuner module, RF coaxial connector switch 31, etc. are mounted on this board, but the SDIO terminal and antenna are not mounted. FIG. 5 (b) shows a front view of the second PCB substrate 42. This board is exclusively used for mounting SDIO pins and antennas, and has the role of ensuring the strength of the entire product. The second PCB substrate 42 is composed of a two-layer substrate of halogen-free FR-4 having a thickness of 0.9 mm, for example. As shown in the figure, a 9-pin SDIO terminal 51 and a pattern antenna 52 are printed on the circuit board by a metal foil.

In addition, as shown in FIG. 5 (b), a rectangular frame 53 is provided at the center of the substrate. Then, when the second PCB substrate 42 shown in FIG. 5 (b) is superimposed on the first PCB substrate 41, the components mounted on the first PCB substrate 41 are stored in the frame portion through the frame portion 53. Is done. In this way, the strength of the substrate is increased by overlapping and bonding the two substrates.

[0037] In addition, a configuration in which a large number of end surface through-holes 54 are provided along the end surface of the frame portion, and a pad 55 for connecting to the first PCB substrate 41 is provided in the vicinity of the RF coaxial connector switch 31. It has become.

FIG. 6 shows the second-layer wiring pattern of the second PCB substrate 42. It is electrically connected to the first layer pattern shown in Fig. 5 (b) via the end face through-hole 54, that is, spirally mounted across the front and back surfaces of the second PCB substrate 42. Thus, the pattern antenna 52 is formed. This is a type of linear antenna, and the reason for making it spiral is to gain length.

[0039] Note that various antenna shapes are conceivable, and instead of the linear pattern antenna described above, a loop antenna (closed loop antenna), a surface mount chip antenna, or the like may be mounted.

[0040] In this way, the PCB board is separated into the component mounting board, the external bus interface terminal (SDIO terminal in the first embodiment) and the antenna mounting board, and mounted on separate boards to obtain the rear force, etc. By pasting together, we have succeeded in securing the substrate strength while suppressing the overall thickness.

In the prototype, the slot insertion part including the upper case and the lower case has a maximum thickness of 2.23 mm, the antenna housing part is 4.7 mm, and sufficient mechanical strength is ensured. I endured.

As described above, the broadcast radio wave receiving apparatus according to the present invention has a planar antenna inside the card. Since it is stored, there is no need to provide a rod antenna outside. Therefore, it has good appearance and convenience and good reception sensitivity.

[0042] (Modification of the first embodiment)

The above-mentioned broadcasting radio wave receiver has the ability to add a 1Seg (terrestrial digital broadcast for mobile terminals) function to the SDIO card. Even when the external bus interface is US B (Universal Serial Bus). It is the same. USB is not a “card”. This is a bus connector for connecting peripheral devices to the host device. Since the shape is defined by the standard, the present invention can be applied as it is like an SDIO card. A modification of the first embodiment will be described below.

[0043] FIGS. 7A and 7B are diagrams for explaining a modification of the first embodiment of the present invention, and are block diagrams of a USB device type one-segment tuner used by being connected to a USB terminal. An example of a program is shown. 7 (a) shows the configuration on the card side (peripheral device side), and FIG. 7 (b) shows the configuration on the host device side.

[0044] As is clear from comparison with Fig. 1, the control chip force on the card side (peripheral device side) SDIO controller 11 force, etc. USB device controller (Strictly speaking, a USB device is not necessarily a "card". “Device controller” is more appropriate than “card controller”.) On the other hand, the control chip (host controller) on the host device side has been changed to USB host controller 81. The other circuit configuration is the same as in FIG. 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 bus interface terminal and the second antenna on which the planar antenna is 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 attached.

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

[0046] (Substrate strength increasing means)

In order to further increase the reliability of products in mass production, it is necessary to further increase the substrate strength. If the antenna housing becomes large or the entire device becomes vertically long due to the internal circuit Even more so. An effective means for increasing the substrate strength, which has been clarified by further studies by the inventors, will be described.

[0047] Fig. 9 (a) is a diagram for illustrating the external shape of the broadcast radio wave receiving device 10 according to the present invention. Fig. 9 (b) is a diagram schematically showing how the mounted components are damaged due to stress concentration. As shown by the arrows in Fig. 9 (a), it can be seen that the bending stress tends to concentrate on the stress line (XX) perpendicular to the longitudinal direction of the device. Note that the stress line (X-X) is a force that varies in position depending on the shape and structure of the device.

[0048] In such a case, as shown in FIG. 9B, among the components mounted on the first PCB board 41, the electronic parts in the weakened portion where bending stress is most likely to concentrate are damaged. It was revealed by experiments that the soldering of mounted parts was torn. In particular, in the case of mounting component force SIC chips, soldering force such as BGA (ball grid array) is applied, and if these parts are stressed, they are easily torn.

[0049] FIGS. 10 (a), 10 (b) and 11 (a), 11 (b) are diagrams for explaining an embodiment of the substrate strength increasing means.

[0050] First means

As shown in Fig. 10 (a), the first countermeasure against this problem is to provide a component mounting prohibited area I in the central part of the first PCB 41 in the longitudinal direction, and mount components in other parts (this It is called “Parts mountable area II”).

FIG. 10 (b) is a diagram showing a state in which components are mounted on the first printed circuit board 41. It can be seen that 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 stress from being applied to the mounted components.

[0052] Second means

As shown in Fig. 11 (a), the second countermeasure against this problem is a stress line (X--) that crosses the junction between the first PCB substrate 41 and the second PCB substrate 42 vertically in the longitudinal center. X) on both sides. The second measure can be further implemented in addition to the first measure.

[0053] The first PCB substrate and the second PCB substrate can be joined by soldering or the like. In this case, soldering is performed at two points on each side of the stress line (X-X) perpendicularly crossing the central part in the longitudinal direction (at least four pairs in opposite pairs). This ensures that the upper and lower substrates are bonded together on the stress line X—X, which is the fragile portion, and the overall substrate strength is improved.

[0054] Third means

On the other hand, if many parts are made into chips and the number of parts is reduced, the chip area increases and the degree of freedom of circuit arrangement is lost. Due to these mounting reasons, it may not be possible to provide a component mounting prohibited area! /.

[0055] As described above, when a large-area chip is mounted across the component mounting prohibited area I on the first PCB board, a widened area for reinforcing the fragile portion is provided on the second PCB board. It should be provided.

[0056] FIG. 11 (b) shows a wide area for reinforcing a weak portion on the second PCB substrate, where a large-area chip 110 is arranged on the first PCB substrate across the component mounting prohibited region I. It shows a situation where III is installed. 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.

[0057] (Second Embodiment)

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

[0058] 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 this memory device provided on the card side (peripheral device side) The digital information of the signal can be recorded and reproduced. 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. Is shown. The configuration on the host device side is the same as in FIG. In addition, the mounting using two PCB substrates follows the first embodiment. The description is omitted.

A difference from FIG. 7A is that a memory device 91 is connected to the USB device controller 71. Specifically, the memory device can be connected simply by connecting to the memory interface of the USB device controller 71 (not shown because it is an internal interface of the controller). Implementation is not particularly difficult. This is because it is a well-known technology that can be configured as a storage device as represented by the USB device power “USB memory”. This is true even if the external bus interface changes from USB to SD bus.

[0061] 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 first device side. To do so, it is only necessary to define several types of commands in advance between the device controller (card controller) and the host controller. If necessary, the device controller can be equipped with a microcomputer.

As described above, when the card side (peripheral device side) device is provided with a memory device for storing data, data sent to the back end unit of the host device can be recorded in this memory device. In particular, since the memory capacity of recent semiconductor memories has increased, for example, even if there are several gigabytes or large amounts of data such as moving image data, a sufficiently practical level recording function can be realized. Is possible.

[0063] Several methods are conceivable for providing the nonvolatile memory. The simplest method is to mount the flash memory chip directly on the first PCB board. In this case, the memory capacity is limited and the memory cannot be replaced. Inferior. Therefore, the card controller (device controller) is equipped with a memory interface according to the type of memory device, and the memory card slot is mounted on the first PCB board so that the card type memory device (memory card) can be removed. Consistency increases when configured.

[0064] The type of memory card is not particularly limited, but relatively small memory cards such as Mini-SD and Micro-SD cards are easy to handle. For example, USB—SD device controller with USB and SD bus protocol conversion engine It is commercially available. Therefore, when this is used, the TS signal from the tuner is transmitted to the host device side, while the TS signal is branched by the device controller and the Mini-SD or Micro-SD card is connected via the SD memory interface. Is easily feasible.

[0065] In the embodiment, an example of a one-segment tuner connected to an SDIO card or USB has been described. However, mounting using two layers of a PCB board or mounting a planar antenna on a second PCB board is possible. Of course, this is not limited to one-segment broadcasting, and is naturally applicable even when receiving radio waves such as FM broadcasting. In that case, it goes without saying that a predetermined antenna shape is selected depending on the frequency of the received radio wave. The same applies to the force S described for the case of using an SDIO card and the case of using a USB device (card) as an external bus interface with an information terminal device, and other interface cards.

Industrial applicability

[0066] Since the broadcast radio wave receiving apparatus according to the present invention can incorporate a high-sensitivity planar antenna in the apparatus body while increasing the substrate strength, an external antenna such as a rod antenna is not required, and appearance and Convenience is improved. In addition, if the card device (peripheral device side) is equipped with a memory device, the data played back on the host device can be recorded, so that the added value of the product can be further increased. Therefore, the industrial applicability of the present invention is great.

Brief Description of Drawings

[0067] [FIG. 1] FIGS. 1 (a) and 1 (b) are diagrams for explaining a first embodiment of the present invention, and show an example of a block diagram of an SDI O card type one-segment tuner. .

[FIG. 2] FIGS. 2 (a) to 2 (c) show the appearance of the one-segment tuner card according to the first embodiment of the present invention. FIG. 2 (a) is a plan view of the card, FIG. (B) is a right side view, and FIG. 2 (c) is a front view.

[FIG. 3] FIGS. 3 (d) to 3 (f) show the appearance of the one-segment tuner card according to the first embodiment of the present invention. FIG. 3 (d) is a rear view of the card, and FIG. (e) is a left side view, and Fig. 3 (f) is a bottom view. FIG. 4 (a) is a cross-sectional view taken along the line XX in FIG. 2 (c), illustrating the internal structure of the one-segment tuner according to the present invention. Fig. 4 (b) shows an exploded view of Fig. 4 (a).

FIG. 5 (a) shows a front view of the first PCB substrate 41. Figure 5 (b) shows a front view of the second PCB substrate 42! /.

[FIG. 6] FIG. 6 shows a second-layer wiring pattern of the second PCB substrate.

FIGS. 7 (a) and 7 (b) 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. Of these, Fig. 7 (a) shows the configuration on the card side (peripheral device side), and Fig. 7 (b) shows the configuration on the host device side.

[FIG. 8] FIG. 8 is a diagram for explaining a second embodiment of the present invention, showing an example of a block diagram of a card side (peripheral device side) device when the external bus is USB. Yes.

[Fig. 9] Fig. 9 (a) is a diagram for illustrating an external appearance of the broadcast radio wave receiving device 10 according to the present invention. Fig. 9 (b) is a diagram schematically showing how the mounted components are damaged due to stress concentration.

FIGS. 10 (a) and 10 (b) are diagrams for explaining an embodiment of the substrate strength increasing means.

Yes

FIGS. 11 (a) and 11 (b) are diagrams for explaining an embodiment of the substrate strength increasing means. Explanation of symbols

10 Broadcast radio wave receiver

20 Host device

30 Antenna compartment

31 External antenna connector (RF coaxial connector switch)

41 First PCB board

42 Second PCB board

Claims

The scope of the claims

[1] A broadcast radio wave receiver that is connected to a host device including a host controller and a digital signal processor and communicates 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 components forming the card controller and the receiving circuit are mounted, an external bus interface terminal, and a planar antenna. A broadcast radio wave receiver characterized by being bonded to a second printed wiring circuit board mounted.

2. 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 receiver according to claim 1 or 2, wherein the external bus interface is SDIO or USB.

4. The receiving circuit is a terrestrial digital broadcast receiving circuit.

4. The broadcast radio wave receiver according to any one of 3 above.

[5] The card controller further includes a memory interface, and a memory device is connected to the memory interface so that data received by the receiving circuit can be recorded. The broadcast radio wave receiver according to any one of claims 1 to 4,

6. The broadcast radio wave receiver according to claim 5, wherein the memory device is a card-type device and can be detached from the broadcast radio wave receiver.

[7] The first printed wiring circuit board according to any one of claims 1 to 6, wherein a component mounting prohibition region is provided in a central portion of the first printed wiring circuit board, and components are mounted separately on both sides thereof.

The broadcast radio wave receiver according to item 1.

[8] Joint component force S of the first printed circuit board 41 and the second printed circuit board 42, a stress line (X-X) perpendicularly crossing the longitudinal center of the first substrate The broadcast radio wave receiver according to claim 7, wherein the broadcast radio wave receiver is provided on both sides of the radio wave receiver.

9. The second printed wiring board is characterized in that a mounting component is provided in a central portion where bending stress is concentrated, and a widened region of the same degree as the mounting component is provided. The broadcast radio wave receiver according to any one of the above.