JP2011071670A - Receiving module and receiver including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiving module which eliminates the need of installing a connection terminal to be used for achieving an optional function, when necessary. <P>SOLUTION: The receiving module is provided in one of receivers having various specifications and executes a predetermined operation. The receiving module includes a device group for executing the operation and connection terminals to be used for connection between the device group and a body of the receiver. The connection terminals comprise optional terminals and essential terminals. The connection terminals are arranged so that a terminal train group formed by arranging substantially in parallel a plurality of terminal trains each of which includes a plurality of connection terminals arrayed in a line, is arranged along one side of an outer edge of a substrate. At least one terminal train in the terminal train group is an optional terminal train including no essential terminal. All the optional terminals of the receiving module are disposed in some optical terminal trains. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a receiving module provided in a receiving apparatus that receives a broadcast signal, and a receiving apparatus including the receiving module.

  Conventionally, receiving apparatuses for receiving broadcast signals (for example, terrestrial digital broadcast signals) have been widely used. Such a receiving apparatus may be manufactured such that a general-purpose module (receiving module) having a part of necessary functions is incorporated on the main body side of the receiving apparatus. If such a manufacturing method is adopted, an improvement in the manufacturing efficiency of the receiving apparatus can be expected.

  Here, the configuration of the receiving device including the receiving module will be briefly described with an example. FIG. 8 is a configuration diagram of the receiving apparatus. As shown in the figure, the receiving apparatus 301 includes an RF signal connector 316, a receiving module 313, a control unit 311, a power supply unit 315, a video / audio output circuit 314, and the like. Each of these elements is arranged on a circuit board (main board).

  The RF signal connector 316 is connected to the antenna 302 and supplies the received digital terrestrial broadcast signal (digital broadcast signal) to the reception module 313. The receiving module 313 is formed by arranging a tuner IC 325, a signal processing IC, a DRAM [Dynamic Random Access Memory: (a kind of RAM)] 322, a flash memory 323, and the like on another circuit board (sub board). .

  The digital broadcast signal supplied from the RF signal connector 316 to the receiving module 313 is first subjected to channel selection processing and converted to an intermediate frequency state by the tuner IC 325. The digital broadcast signal is further transmitted to the signal processing IC 321, where demodulation processing, decompression processing, D / A conversion processing, and the like are performed, and an analog video / audio signal is generated. This video / audio signal is output to the video display device 303 (display or speaker) through the video / audio output circuit 314.

  The DRAM 322 is used as a work area (working memory) of the signal processing IC 321. The flash memory 323 is used as a memory for storing a program for operating the signal processing IC 321. Further, the control unit 311 appropriately controls the reception module 313 and the like so that the function of the reception device 301 is exhibited, and the power supply unit 315 supplies power to the reception module 313 and the like in accordance with an instruction from the control unit 311.

  The sub-board used for forming the receiving module 313 is provided with a connection terminal for connecting each element of the receiving module 313 to the main body side of the receiving device 301. The reception module 313 functions as a part of the reception device 301 by attaching the sub board to the main board and connecting the connection terminals to each element on the main board.

JP 2000-68673 A Japanese Patent Laid-Open No. 11-341375

  In recent years, there has been an increasing demand for downsizing and cost reduction of receiving apparatuses. In the case of a receiving apparatus in which a receiving module is incorporated as described above, it is important to reduce the size and price of the receiving module itself in order to reduce the size and price of the receiving apparatus.

  By the way, in the receiving module provided in the receiving apparatus, functions (optional functions) that are not used depending on the specifications of the receiving apparatus may be prepared in advance. For example, functions that are not directly related to signal reception and functions that are relatively unimportant may not be used as optional functions when provided in a receiving device with simplified specifications.

  Focusing on the connection terminal of the receiving module described above, the connection terminal (option terminal) used for realizing the optional function is not necessary when the receiving module is provided in such a simplified receiving apparatus. It can be said that there is.

  Therefore, in this case, it can be said that omitting the installation of the connection terminal used for realizing the optional function contributes to downsizing and cost reduction of the receiving module. Therefore, it is desirable that in the manufacturing process of the receiving module and the like, it is easy to appropriately omit the installation of the connection terminal used for realizing the optional function.

  In view of the above-described problems, an object of the present invention is to provide a receiving module that makes it easy to appropriately omit the installation of connection terminals used for realizing optional functions.

  In order to achieve the above object, a receiving module according to the present invention is a receiving module that is provided as a module in any of various types of receiving apparatuses that receive broadcast signals, and that executes a predetermined operation. And a connection terminal used for connection between the device group and the main body of the receiving device, and the connection terminal is one of the various specifications. And an optional terminal that is not used when provided in a specific specification receiver, and an essential terminal that is also used when provided in the specific specification receiver. A terminal array group in which a plurality of terminal arrays in which a plurality of connection terminals are arranged in a line is arranged in parallel with each other along one side of the outer edge of the substrate. At least one terminal row is an optional terminal row in which the essential terminals are not included, and all the optional terminals included in the receiving module are arranged in any one of the optional terminal rows. .

  According to this configuration, by omitting the installation of the optional terminal row, it is possible to omit the installation of the optional terminal (connection terminal used for realizing the optional function) without hindering the installation of the essential terminal. Become. Therefore, it becomes easy to omit the installation of option terminals as appropriate.

  More specifically, the receiving device receives a digital terrestrial broadcast signal including video and audio information, and the device group selects the received broadcast signal. A tuner that performs a station process and a process for converting to an intermediate frequency state; and a digital demodulation circuit unit that receives the broadcast signal from the tuner and performs a demodulation process on the broadcast signal; applied to the demodulated broadcast signal A video / audio demodulation circuit unit that releases the compression processing and acquires digital video and audio signals; and a video / audio generation circuit unit that converts the digital video and audio signals into analog video and audio signals; A signal processing device comprising: a first memory used as a work area for the signal processing device; and a program for operating the signal processing device A second memory, may be configured to contain a.

  Moreover, the said structure WHEREIN: The said optional terminal row | line | column is good also as a structure arrange | positioned at the side near the outer edge of the said board | substrate rather than the other terminal row | line | column in the said terminal row group. According to this configuration, it is possible to arrange the connection terminals included in the other terminal row as close as possible to each device on the substrate. As a result, it is possible to shorten the wiring connecting the connection terminal and the device, and to suppress electromagnetic noise that reaches the wiring as much as possible.

  More specifically, the terminal row group includes two terminal rows including one optional terminal row, while the outer edge of the substrate is formed in a substantially square shape. The connection terminals that are not included in the terminal row group may be arranged so as to be along a side of the outer edge of the substrate facing the one side.

  In the above configuration, the substrate is formed as a multilayer substrate, and a portion of the wiring pattern included in the substrate used for transmission of the broadcast signal from the tuner to the signal processing device is the multilayer substrate. It is good also as a structure arrange | positioned at the inner layer. Moreover, it is good also as a structure arrange | positioned so that the part used for transmission of the said broadcast signal from the said tuner to the said signal processing apparatus among the wiring patterns with which the said board | substrate is pinched | interposed into the ground pattern with which the said board | substrate is equipped. .

  According to these configurations, it is possible to suppress as much as possible electromagnetic noise from other devices and the like, which covers a broadcast signal transmitted from the tuner to the signal processing device.

  In the above configuration, the tuner is covered with a shield case so as to reduce electromagnetic noise from other devices in the device group, and the shield case is connected to a ground pattern included in the substrate. It is good also as a structure. Further, the shield case is connected to the ground pattern by soldering, and the portion of the ground pattern to be soldered is substantially the same as the size of the shield case. It is good also as a structure arrange | positioned so that it may surround.

  According to these configurations, it is possible to suppress electromagnetic noise from other devices that reach the tuner as much as possible.

  More specifically, the signal processing apparatus includes an input terminal that receives an input of a predetermined reset signal, and resets its operation state when the reset signal is input. In addition, a self-reset unit may be provided that generates and inputs the reset signal to the input terminal when a predetermined abnormality in the operating state of the signal processing device is detected.

  More specifically, in the above configuration, any one of the connection terminals is used for transmitting the reset signal from the main body of the receiving device to the signal processing device. The operation state may be reset even when the reset sent from the main body of the receiving device is input to the input terminal.

  More specifically, the signal processing device generates a notification signal for notifying the main body of the receiving device when the operation state of the signal processing device is reset. Any of the terminals may be configured to be used for transmitting the notification signal from the signal processing device to the main body of the receiving device.

  A receiving apparatus according to the present invention includes a receiving module according to the above configuration. According to this configuration, it is possible to enjoy the advantages obtained by the above configuration.

  As described above, according to the receiving module of the present invention, by omitting the installation of the option terminal row, it is possible to omit the installation of the option terminals without hindering the installation of the essential terminals. Therefore, it becomes easy to omit the installation of option terminals as appropriate.

It is a whole block diagram of the receiver which concerns on embodiment of this invention. It is explanatory drawing showing the arrangement | positioning aspect of each element in the receiver which concerns on embodiment of this invention. It is explanatory drawing regarding the arrangement | positioning aspect of tuner IC. It is explanatory drawing regarding the arrangement | positioning aspect of tuner IC. It is explanatory drawing regarding the arrangement | positioning aspect of an intermediate frequency signal line. It is explanatory drawing regarding the kind of connecting terminal. It is explanatory drawing regarding omission of installation of a terminal row | line | column. It is a block diagram which concerns on an example of the conventional receiver.

  Embodiments of the present invention will be described below with reference to an example of a receiving device that receives a broadcast signal (digital broadcast signal) of terrestrial digital broadcasting. The digital broadcast signal includes video and audio information in a digital format and is broadcast from a broadcasting station in a state where a predetermined compression process is performed. In the following description, the “main body” of the receiving device refers to a portion of the receiving device excluding the receiving module.

  FIG. 1 is an overall configuration diagram of a receiving apparatus according to an embodiment of the present invention. As shown in the figure, the receiving apparatus 1 includes an RF signal connector 11, a receiving module 12, a video / audio output circuit 13, a main control unit 14, an input / output control unit 15, a power supply unit 16, and the like. Each of these elements is arranged on the mounting surface of the circuit board (main board).

  The RF signal connector 11 is connected to an antenna 2 that receives broadcast waves, and supplies a digital broadcast signal (RF signal) continuously obtained via the antenna 2 to the reception module 12. The receiving module 12 is a module (component) of the receiving device 1 incorporated in the main body of the receiving device 1, and the tuner IC 25, the signal processing IC 21, the DRAM 22, the flash memory 23, and the like are circuit boards (separate from the main board). The sub-board is disposed on the mounting surface.

  The tuner IC 25 performs channel selection processing (processing for extracting a signal of a designated frequency) or intermediate frequency (preliminary processing) for the digital broadcast signal transmitted from the front stage side (RF signal connector 11 in this embodiment). It is a device (tuner) that performs a process of converting and amplifying the signal to a predetermined frequency state. As described above, the tuner IC 25 has a function as a general tuner and realizes signal processing according to the superheterodyne system.

  The signal processing IC 21 is formed as an IC (device) including functional units of the digital demodulation circuit unit 101, the video / audio demodulation circuit unit 102, the video / audio generation circuit unit 103, and the operation state monitoring unit 104. The memory 22 is connected to the memory 22 of the DRAM 22 and the flash memory 23. The signal processing IC 21 can access these memories.

  The DRAM 22 is mainly used as a work area (working memory) of the signal processing IC 21. The flash memory 23 is mainly used as a memory for storing a program for operating the signal processing IC 21. That is, the signal processing IC 21 operates based on a program stored in the flash memory 23 using the DRAM 22 as a work area. The operation content of each functional unit in the signal processing IC 21 is as follows.

  The digital demodulation circuit unit 101 mainly performs demodulation processing on the digital broadcast signal transmitted from the preceding stage (in this embodiment, the tuner IC 25). The video / audio demodulation circuit unit 102 mainly performs a process of releasing the compression process (a process of returning to an uncompressed state) on the demodulated digital broadcast signal.

  As a result of each processing described above, digital video and audio signals are acquired from the digital broadcast signal. The video / audio demodulation circuit unit 102 sends the acquired digital video and audio signals to the video / audio generation circuit unit 103.

  The video / audio generation circuit unit 103 converts the transmitted digital video and audio signals into analog video and audio signals. The analog video and audio signals are sent to the subsequent stage (in this embodiment, the video / audio output circuit 13).

  Note that the signal processing IC 21 is provided with a reset signal input terminal for receiving an input of a reset signal, and each part (101 to 103) of the signal processing IC 21 is in an operating state while the reset signal is input. Reset (for example, a hardware reset and a process for returning the operation state to a predetermined initial state) is performed. More specifically, while the signal input to the reset signal input terminal (usually set to the H level) is at the L level, the operating state of each part (101 to 103) of the signal processing IC 21 Is reset. That is, the L level signal is a reset signal.

  The operation state monitoring unit 104 continuously monitors whether an abnormality occurs in the operation state of each unit (101 to 103) of the signal processing IC 21 (which state is determined in advance is determined in advance). To do. The operation state monitoring unit 104 normally inputs an H level signal to the reset signal input terminal. However, when detecting that the above-described abnormality has occurred, the operation state monitoring unit 104 outputs an L level signal (reset signal) for a certain period. input. The reset signal transmission path and the like will be described in detail again.

  Further, the video / audio output circuit 13 is configured by a video display device 3 (a display, a speaker, or the like) connected to the rear side of the receiving device 1 for analog video and audio signals sent from the front side. ). Thereby, video display and audio output of a television program related to terrestrial digital broadcasting are realized.

  The main control unit 14 supplies a control signal to each unit (including the reception module 12) of the reception device 1 so that the function as the reception device is exhibited, and appropriately controls each unit. The input / output control unit 15 performs control related to signal input / output and assists the operation of the main control unit 14.

  Further, the input / output control unit 15 monitors a user operation state on a user interface (not shown) (for example, provided with an operation button and a remote control system), and transmits the user's intention (operation state) to the main control unit 14. May be. In the receiving apparatus 1, switching of power supply ON / OFF, switching of a channel (frequency) to be selected, and the like are appropriately instructed by the user, and the main control unit 14 operates according to this instruction.

  The power supply unit 16 can obtain power from, for example, a commercial power supply or a battery, and supplies power to each unit (including the reception module 12) of the reception device 1. In addition, the arrangement | positioning aspect (when the main board | substrate is seen from the front side) of each element in the receiver 1 is as showing in FIG.

  As shown in FIG. 2, each element (11 to 16) of the receiving device 1 is arranged on the mounting surface (front surface) of the main substrate 10. The receiving module 12 is attached to the main board 10 such that the back surface of the sub-board 20 faces the front surface of the main board 10. Next, the arrangement mode of each element in the receiving module 12 will be described in more detail.

  The receiving module 12 is formed by disposing each element on a sub-board 20 (printed board) whose outer edge is rectangular. More specifically, as shown in FIG. 2, a signal processing IC 21, a DRAM 22, a flash memory 23, a tuner IC 25, and the like are arranged on the mounting surface of the sub-board 20.

  Here, the arrangement | positioning aspect in the mounting surface of the sub board | substrate 20 is demonstrated in detail. The signal processing IC 21 is disposed substantially at the center of the mounting surface. The tuner IC 25 is disposed between the signal processing IC 21 and one side of the outer edge of the mounting surface (the left side in FIG. 2). The DRAM 22 and the flash memory 23 are disposed between the signal processing IC 21 and the other side of the outer edge of the mounting surface (the right side in FIG. 2).

  It can be seen that the tuner IC 25, the DRAM 22 and the flash memory 23 are located on opposite sides of the signal processing IC 21 as a boundary. As described above, according to the arrangement form on the mounting surface of the sub-board 20, the signal processing IC 21 is interposed between the tuner IC 25 and the memories (22, 23). Therefore, the signal processing IC 21 exhibits a function according to the electromagnetic shield, and it is possible to suppress the influence of the digital noise generated by each memory (22, 23) on the operation of the tuner IC 25 as much as possible.

  In addition, since such an effect can be obtained without separately providing an electromagnetic shield or the like, it is possible to prevent the miniaturization of the receiving module 12 as much as possible. However, an electromagnetic shield or the like may be separately provided in order to further suppress the influence of noise.

  As for the signal processing IC 21, the operation state monitoring unit 104 described above is connected to the reset signal input terminal 21 a through a signal line (self-reset signal line) including the OR circuit 28 as shown in FIG. 2. The self-reset signal line is formed by connecting the operation state monitoring unit 104 to one input terminal of the OR circuit 28 and connecting the output terminal of the OR circuit 28 to the reset signal input terminal 21a. Thereby, the reset signal sent from the operation state monitoring unit 104 is inputted to the reset signal input terminal 21a.

  As described above, the operation state monitoring unit 104 normally inputs an H level signal to the reset signal input terminal 21a, but detects an abnormality in the operation state of each unit (101 to 103) of the signal processing IC 21. Generates and inputs an L level signal (reset signal) for a certain period of time. Therefore, when the entire signal processing IC 21 is viewed as one device, the signal processing IC 21 cancels the self-reset after resetting its own operation state (self-reset) when detecting an abnormality in its own operation state. It is intended to perform the operation.

  As a result, even if an abnormality occurs in the operation state of each unit (101 to 103) of the signal processing IC 21, the signal processing IC 21 can quickly repair the abnormality in the operation state and return it to a normal operation state. It has become. Examples of the abnormality in the operating state include those caused by an unexpected power supply voltage drop in the receiving module 12 and those caused by an operation program.

  Further, the other input terminal of the OR circuit 28 (which is not connected to the operation state monitoring unit 104) is connected to the main body side (main control unit 14) of the receiving device 1 through a connection terminal described later. . Thereby, when an external reset signal line is formed and a reset signal is sent from the main body side of the receiving device 1, this reset signal is input to the reset signal input terminal 21a. Also in this case, the operation state of each unit (101 to 103) of the signal processing IC 21 is reset.

  Thus, the reset signal input terminal 21a is shared by the self-reset signal line and the external reset signal line, and each part (101 to 103) of the signal processing IC 21 when the reset signal is input from any signal line. The operating state of is reset. That is, the reset is executed regardless of which of the operation state monitoring unit 104 and the main control unit 14 sends the reset signal.

  Further, when the operation state of each unit (101 to 103) of the signal processing IC 21 is reset, the operation state monitoring unit 104 generates a notification signal for notifying the main body side of the receiving device 1 that the reset has been performed. The output is made to the main body side (main control unit 14) via a connection terminal described later. As a result, the main control unit 14 can receive the notification signal and perform necessary processing. For example, when the main control unit 14 receives the notification signal, the main control unit 14 is necessary for the signal processing IC 21 so that various operation settings in the units (101 to 103) of the signal processing IC 21 are restored to the state before the reset. Give instructions.

  In the receiving apparatus 1, the above-described function for the main control unit 14 to supply the reset signal to the receiving module 12 and the function for the main control unit 14 to receive the notification signal from the receiving module 12 can be omitted as appropriate. It has become a function. The reception device 1 having a normal specification (hereinafter referred to as “normal specification”) is provided with these functions, but the reception device 1 having a predetermined simplified specification (hereinafter referred to as “simple specification”). Then, these functions are not provided.

  According to the simple specification, some functions are omitted compared to the normal specification, but it is possible to reduce the number of necessary devices, and it is easier to reduce the cost and size of the receiving device 1. It becomes. Although the receiving module 12 can be provided in any receiving device 1, as described later, when it is provided in the simple receiving device 1 (manufactured for the simple receiving device 1). In this case, unnecessary connection terminals are omitted.

  In the receiving module 12, the tuner IC 25 is arranged as follows in order to reduce electromagnetic noise from other components extending to the tuner IC 25. First, as shown in FIG. 3, the tuner IC 25 is substantially surrounded by a part 20a of the ground pattern of the sub substrate 20 (at least so that most of the periphery of the tuner IC 25 is surrounded). It is arranged on the mounting surface. A metal (conductive) shield case SC is attached to the sub-board 20 so as to cover the tuner IC 25a.

  Here, the shield case SC has a shape in which one surface is opened in a substantially rectangular parallelepiped housing, and is placed on the sub-board 20 so that the opened virtual surface (opening surface) faces the sub-board 20. . As shown in FIG. 4, the shield case SC is attached to the sub-board 20 by joining substantially the entire periphery (at least the most part) of the outer edge of the opening surface and the ground pattern 20a by soldering.

  The ground pattern 20a and the shield case SC are designed to have such shapes and dimensions that allow such soldering. It can be seen that the ground pattern 20a is arranged so as to substantially surround the tuner IC 25 in accordance with the size of the shield case SC.

  Thus, the tuner IC 25 is covered with the shield case SC connected to the ground pattern 20a, so that electromagnetic noise from other devices such as the signal processing IC 21 is reduced. Therefore, it is possible to avoid as much as possible the situation where the proper operation of the tuner IC 25 is hindered by electromagnetic noise.

  Furthermore, almost the entire circumference of the outer edge of the opening surface of the shield case SC is soldered to the ground pattern 20a. Therefore, it is possible to reduce the impedance of the shield case SC and the ground pattern 20a as much as possible by increasing the number of connection points between the shield case SC and the ground pattern 20a (increasing the connection area). As a result, electromagnetic noise from other devices extending to the tuner IC 25 can be further reduced.

  Of the wiring pattern provided in the receiving module 12, a portion (hereinafter referred to as “intermediate frequency signal line” as appropriate) used for transmission of a broadcast signal in an intermediate frequency state from the tuner IC 25 to the signal processing IC 21 is transmitted from another device. It is arranged to reduce the electromagnetic noise.

  More specifically, as shown in FIG. 5, the intermediate frequency signal line L arranged on the sub-board 20 is arranged so as to be sandwiched between part of the ground pattern 20 b of the sub-board 20. Thereby, it is possible to reduce as much as possible the electromagnetic noise from other devices that reaches the broadcast signal in an intermediate frequency state that is easily affected by noise.

  Further, when a multilayer substrate is employed as the sub-substrate 20, the intermediate frequency signal line L may be arranged in the inner layer of the multilayer substrate. Even in this case, it is possible to reduce as much as possible the electromagnetic noise from other devices arranged on the surface of the multilayer substrate, etc., which reaches the broadcast signal in the intermediate frequency state. The intermediate frequency signal line L is arranged on the inner layer of the multi-layer board in such a manner that the intermediate frequency signal line L is sandwiched by a part of the ground pattern of the sub-board 20 so that the influence of electromagnetic noise on the broadcast signal is further reduced. Anyway.

  The receiving module 12 is provided with a plurality of connection terminals for connecting each element in the receiving module 12 to the main body of the receiving device 1. Here, the arrangement | positioning aspect of the said connection terminal is demonstrated below.

  As shown in FIG. 2, the sub-board 20 includes a terminal row group including a first terminal row 26a and a second terminal row 26b along one side of the outer edge of the mounting surface (the lower side in FIG. 2). 26 is arranged. Furthermore, the third terminal row 27 is arranged along the other side (upper side in FIG. 2) facing this side.

  Each of these terminal rows (26a, 26b, 27) is arranged such that a plurality of connection terminals are arranged in a row. As shown in FIG. 2, the terminal row group 26 includes a first terminal row 26a and a second terminal row 26b arranged in parallel, and the direction of each terminal row (26a, 26b). Corresponds to the direction of the terminal row group 26 (the direction of the lower side in FIG. 2). Further, in the terminal array group 26, the first terminal array 26a is arranged on the inner side (the side far from the outer edge of the sub-board 20) than the second terminal array 26b. Each terminal row (26a, 26b, 27) may be formed as a header pin.

  Each connection terminal of the receiving module 12 is arranged in any of the above-described terminal rows (26a, 26b, 27). Next, the types of connection terminals included in the reception module 12 and in which terminal row each connection terminal is arranged will be described.

  FIG. 6 shows the types of main connection terminals of the receiving module 12. The connection terminal P1 is used to connect the tuner IC 25 to the main body side (RF signal connector 11) of the receiving device 1, and is used to input a broadcast signal from the main body side. The connection terminal P2 is for connecting the signal processing IC 21 to the main body side (video / audio output circuit 13) of the receiving apparatus 1, and is used for outputting a video signal to the main body side. The connection terminal P3 is for connecting the signal processing IC 21 to the main body side (video / audio output circuit 13) of the receiving apparatus 1, and is used for outputting an audio signal to the main body side.

  The connection terminal P4 is for connecting the signal processing IC 21 to the main body side (main control unit 14) of the receiving device 1, and is used for inputting a control signal from the main body side. The connection terminal P5 is used to connect the tuner IC 25 to the main body side (main control unit 14) of the receiving device 1, and is used for inputting a control signal from the main body side. The connection terminal P6 is used to connect each part in the receiving module 12 to the main body side (power supply unit 16) of the receiving apparatus 1, and is used for supplying power from the main body side. The connection terminal P7 is for connecting the signal processing IC 21 to the main body side (main control unit 14) of the receiving device 1, and is used for inputting a reset signal from the main body side. The connection terminal P8 is for connecting the signal processing IC 21 to the main body side (main control unit 14) of the receiving apparatus 1, and is used for outputting a notification signal to the main body side.

  Of the connection terminals (P1 to P8), each of the connection terminals P1 to P6 is connected to the main body of the reception device 1 regardless of whether the reception device 1 has a normal specification or a simple specification. It is a connection terminal (essential terminal) used. On the other hand, the connection terminal P7 and the connection terminal P8 are used when the receiving device 1 has a normal specification, but are not used when the reception device 1 has a simple specification (when the optional function described above is omitted). Optional terminal). For this reason, when applied to the simplified receiver 1, it can be said that the optional terminal is not necessary in the receiving module 12.

  Therefore, when the receiving module 12 is manufactured, both the essential terminal and the optional terminal are connected for the receiving device 1 of the normal specification, but the optional terminal is used for the receiving device 1 of the simple specification. The one where the installation of is omitted is manufactured. Thereby, installation of useless connection terminals is omitted, and the manufacturing cost of the receiving module is suppressed as much as possible.

  All the essential terminals (including P1 to P6) of the receiving module 12 are arranged somewhere in the first terminal row 26a or the third terminal row 27, and all the optional terminals (P7 and P8) of the receiving module 12 are provided. Is arranged at somewhere in the second terminal row 26b.

  Therefore, it is possible to manufacture a receiving module in which no option terminal is installed based on the receiving module 12 in which the option terminal is installed by omitting the installation of the second terminal row 26b in the manufacturing process. Yes. In other words, instead of the terminal row group 26 having two terminal rows (for example, two header pins), by installing one terminal row (for example, one header pin), such a receiving module can be manufactured. Is possible. At this time, since the essential terminals are not included in the second terminal row 26b, the installation of the essential terminals is not hindered by omitting the installation of the second terminal row 26b.

  Further, in the manufacturing process of the receiving module 12, one or a plurality of terminal rows are not installed as a whole (entirely). This means that some connection terminals of a certain terminal row are installed while other connection terminals are not installed. In general, it can be realized by a simple process rather than installation. Therefore, the receiving module 12 for the simplified specification receiving device 1 is based on the receiving module 12 for the normal specification receiving device 1, for example, the configuration shown in FIG. 7 (the setting of the second terminal row 26b and the OR circuit 28 is set). It is possible to manufacture relatively easily.

  In addition, the second terminal row 26 b in which only the option terminals are arranged is arranged closer to the outer edge of the sub-board 20 than the other terminal rows (first terminal row 26 a) in the terminal row group 26. Thus, the first terminal row 26a is arranged at a relatively close position from each part (signal processing IC 21 and tuner IC 25) of the receiving module 12. Therefore, the wiring connecting each connection terminal of the first terminal row 26a (which includes essential terminals, which is more important than the option terminal) and each part of the receiving module 12 is made as short as possible so that other components It is possible to avoid electromagnetic noise from reaching the wiring as much as possible.

  In the manufacturing process of the normal specification receiver 1, the reception module 12 for the normal specification receiver 1 is attached to the main board 10 on the main body side of the receiver 1, and each connection terminal is connected to the main body of the receiver 1. It is connected to a predetermined location on the side. On the other hand, in the manufacturing process of the simplified receiver 1, the reception module 12 for the simplified receiver 1 is attached to the main board 10 on the main body side of the receiver 1, and each connection terminal is connected to the receiver 1. Connected to a predetermined location on the main body side. Thereby, the receiving module 12 can be appropriately functioned as a part of the receiving device 1.

  That is, the digital broadcast signal transmitted from the RF signal connector 11 is input to the tuner IC 25 through the connection terminal P1, and the tuner IC 25 performs channel selection processing and the like. The analog video and audio signals sent from the signal processing IC 21 (video / audio generation circuit unit 103) are output to the video / audio output circuit 13 via the connection terminals P2 and P3. A control signal is given to the signal processing IC 21 and the tuner IC 25 from the main control unit 14 via the connection terminals P4 and P5. In addition, power is supplied from the power supply unit 16 to each unit of the reception module 12 via the connection terminal P6.

  In the normal specification receiver 1, the reset signal sent from the main control unit 14 is inputted to the signal processing IC 21 via the connection terminal P7, and the notification signal sent from the signal processing IC 21 is sent to the connection terminal P8. To the main control unit 14.

  In addition, the terminal row group 26 in this embodiment includes two terminal rows, but may include three or more terminal rows. Further, the terminal row group 26 in the present embodiment includes only one terminal row (option terminal row) in which only option terminals are arranged, but may include two or more rows. In the present embodiment, as an example of the optional function, the function related to the input of the reset signal and the output of the notification signal is described. However, other functions may be the optional function.

  As described above, the reception module 12 according to the present embodiment is provided as a module in any of the normal specification and simple specification reception devices 1, and performs predetermined operations (various processes for broadcast signals) as a part of the reception device 1. Etc.). The receiving module 12 is formed in such a manner that a device group (signal processing IC 21, DRAM 22, flash memory 23, tuner IC 25, etc.) that performs the operation is arranged on the sub-board 20. 1 is provided with connection terminals (P1 to P8, etc.) used for connection with one main body. Note that the connection terminals are optional terminals (P7, P8, etc.) that are not used when provided in the simplified specification receiving device 1, and essential terminals (P1 to P6) that are also used when provided in the simplified specification receiving device 1. Etc.).

  And about the arrangement | positioning aspect of a connection terminal, the terminal row group 26 which has arrange | positioned the several terminal row | line | column (1st terminal row | line | column 26a and 2nd terminal row | line | column 26b) in which the several connection terminal was located in a line in parallel is sub-board | substrate. It is arranged along one side of the outer edge. The second terminal row 26b in the terminal row group 26 is a terminal row (optional terminal row) that does not include essential terminals. All option terminals included in the receiving module 12 are arranged in this option terminal row.

  Therefore, according to the receiving module 12, by omitting the installation of the optional terminal row, it is possible to omit the installation of the optional terminals without hindering the installation of the essential terminals. For this reason, it is easy to omit the optional terminals as appropriate. The receiving device 1 according to the present embodiment receives digital terrestrial broadcast signals, but may have specifications for receiving other types of broadcast signals.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this content. The embodiments of the present invention can be variously modified without departing from the gist of the present invention.

  The present invention can be used for a receiving apparatus that receives terrestrial digital broadcasting.

DESCRIPTION OF SYMBOLS 1 Reception apparatus 2 Antenna 3 Video display apparatus 10 Main board 11 RF signal connector 12 Reception module 13 Video / audio output circuit 14 Main control part 15 Input / output control part 16 Power supply part 20 Sub-board 20a Part of ground pattern in sub-board 20b Sub Part of ground pattern on substrate 21 Signal processing IC (signal processing device)
21a Reset signal input terminal 22 DRAM (first memory)
23 Flash memory (second memory)
25 Tuner IC (Tuner)
26 terminal row group 26a first terminal row 26b second terminal row (option terminal row)
27 Third terminal array 28 OR circuit 101 Digital demodulating circuit unit 102 Video / audio demodulating circuit unit 103 Video / audio generating circuit unit 104 Operating state monitoring unit
L Intermediate frequency signal line P1 to P8 Connection terminal SC Shield case

Claims (12)

A receiving module that is provided as a module in any of various types of receiving devices that receive broadcast signals, and that performs a predetermined operation,
A device group for performing the operation is formed in a manner arranged on a substrate, and includes a connection terminal used for connection between the device group and the main body of the receiving device,
The connection terminal is an optional terminal that is not used when provided in a receiving device of a specific specification that is one of the various specifications, and an essential terminal that is also used when provided in a receiving device of the specific specification. And
Regarding the arrangement of the connection terminals,
A terminal array group in which a plurality of terminal arrays in which a plurality of connection terminals are arranged in a row is arranged substantially in parallel, is arranged along one side of the outer edge of the substrate,
At least one terminal row in the terminal row group is an optional terminal row that does not include the essential terminals,
All of the option terminals included in the receiving module are arranged in any one of the option terminal rows. The receiving device receives a digital terrestrial broadcast signal including video and audio information,
In the device group,
A tuner that performs a tuning process on the received broadcast signal and a process of converting to an intermediate frequency state;
A digital demodulation circuit unit that receives the broadcast signal from the tuner and demodulates the broadcast signal; releases the compression processing applied to the demodulated broadcast signal, and acquires digital video and audio signals A video / audio demodulating circuit section; and a video / audio generating circuit section for converting the digital video and audio signals into analog video and audio signals;
A first memory used as a work area of the signal processing device;
A second memory for storing a program for operating the signal processing device;
The receiving module according to claim 1, further comprising:   The receiving module according to claim 2, wherein the option terminal row is arranged closer to the outer edge of the substrate than the other terminal rows in the terminal row group. In the terminal row group, two terminal rows including one optional terminal row are arranged,
The outer edge of the substrate is formed in a substantially square shape,
4. The receiving module according to claim 3, wherein one of the connection terminals that is not included in the terminal row group is disposed along a side of the outer edge of the substrate that faces the one side. 5. . The substrate is formed as a multilayer substrate,
The part used for transmission of the said broadcast signal from the said tuner to the said signal processing apparatus among the wiring patterns with which the said board | substrate is arrange | positioned in the inner layer of the said multilayer substrate, The Claim 2 characterized by the above-mentioned. 5. The receiving module according to any one of 4.   The portion of the wiring pattern provided on the substrate used for transmitting the broadcast signal from the tuner to the signal processing device is disposed so as to be sandwiched between ground patterns provided on the substrate. The receiving module according to any one of claims 2 to 5. The tuner is covered with a shield case so as to reduce electromagnetic noise from other devices in the device group,
The receiving module according to claim 2, wherein the shield case is connected to a ground pattern included in the substrate. The shield case is connected to the ground pattern by soldering,
The receiving module according to claim 7, wherein a portion of the ground pattern to be soldered is disposed so as to substantially surround the tuner in accordance with the size of the shield case. The signal processing device includes:
An input terminal for receiving an input of a predetermined reset signal is provided, and when the reset signal is input, its own operation state is reset,
The self-resetting means for generating the reset signal and inputting the reset signal to the input terminal when detecting a predetermined abnormality in the operation state of the signal processing device. Receive module. Any of the connection terminals are used for transmission of the reset signal from the main body of the receiving device to the signal processing device,
The signal processing device includes:
The receiving module according to claim 9, wherein the operation state of the receiving module is also reset when the reset sent from the main body of the receiving device is input to the input terminal. The signal processing device includes:
When its own operating state is reset, it generates a notification signal for notifying the main body of the receiving device to that effect,
11. The receiving module according to claim 9, wherein any one of the connection terminals is used for transmitting the notification signal from the signal processing device to a main body of the receiving device.   A receiving device comprising the receiving module according to any one of claims 1 to 11.