JP2007074342A - Broadcast receiving terminal and method of controlling it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to freely select desired time to obtain view contract information and speedily acquire the view contract information in user's desired timing regardless of the charging state of a secondary battery. <P>SOLUTION: A main microcomputer 10 performs one of: a charging mode in which a sub-microcomputer 12 is instructed to charge a secondary battery 15 and operations of circuits relating to reception and circuits relating to reproduction are stopped, when a main system power source is off; a standby-after-charging mode in which the sub-microcomputer 12 is instructed to quickly charge the secondary battery 15 and the circuits relating to reception are operated after the end of charging to start receiving CA (Conditional Access) information, when the main system power source is off ; and a standby mode in which the circuits relating to reception are operated to get ready to receive the CA information and the sub-microcomputer 12 is instructed to charge the secondary battery 15, when the main system power source is off. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a broadcast receiving terminal capable of viewing a pay program of a digital broadcast by receiving viewing contract information and a control method thereof.

  In recent years, so-called mobile broadcasting (http://www.mbco.co.jp), a broadcasting service for individuals that can be enjoyed while traveling by car or train or outdoors, has started in the developed countries such as the United States and Japan. It is becoming popular. In particular, mobile broadcasting in Japan has a service system that can enjoy multi-channel broadcasting of about 30 channels of audio programs, about 10 channels of video programs, and about 60 titles of data information services anytime and anywhere.

  Mobile broadcasting uses a 2.6 GHz band radio wave called an S band, and broadcasting to all receiving terminals such as a fixed receiving terminal, a portable receiving terminal, and an in-vehicle receiving terminal is possible.

  In mobile broadcasting, radio waves reach with an output of about 10 times that of satellite broadcasting currently received by a parabolic antenna, so reception with a small omnidirectional antenna becomes possible. In addition, since the broadcasting is nationwide, it is not necessary to switch channels even when moving from one area to another.

  Further, high-speed data transmission of 7.2 Mbps is used for the above-described program distribution. In addition, mobile broadcasting uses radio waves from satellites located 36,000 kilometers above the equator, so it may not be received by building shadows, mountainous areas, tunnels, etc. There is a mechanism called a gap filler that retransmits.

  The gap filler receives a 12 GHz band radio wave from a satellite with a parabolic antenna, converts the frequency to 2.6 GHz, and retransmits it with a dedicated antenna. That is, two types of radio waves are always emitted from the satellite.

  Meanwhile, terrestrial digital broadcasting for mobile devices is scheduled to start in March 2006. In this mobile terrestrial digital broadcasting, a one-segment broadcasting system is planned to be adopted, and the contents can be received even by an ultra-small portable receiving device such as a PDA or a mobile phone.

  Here, one segment broadcasting uses one segment in terrestrial digital broadcasting. That is, the band given to the broadcasting station by terrestrial digital broadcasting is divided into 13 segments. Of these, 12 segments are used for ordinary broadcasting services. If high-definition broadcasting (HD) is performed, the entire 12 segments are used. If standard broadcasting (SD) is performed, three channels of four segments can be broadcast.

  Therefore, since the remaining one segment is used and a mobile reception service is performed by a mobile phone or the like, it is called one-segment mobile (one-segment broadcasting). The advantages of viewers by the digitalization of terrestrial broadcasts include the ability to view high-definition and high-quality digital high-definition broadcasts, the ability to use bidirectional data broadcasts, and mobile reception with clear images. And so on.

  By the way, in such digital broadcasting, especially when a pay program is viewed, broadcast reception cannot be performed unless CA (Conditional Access) information serving as viewing contract information is received.

  Such CA information is regularly transmitted from a broadcasting station together with a pay program, but its transmission timing is determined on the broadcasting station side by the number of receiving subscribers, the total amount of transmission data, etc. I don't know when it is transmitted from the broadcast receiving terminal side. Therefore, at the broadcast receiving terminal side, in order to reliably receive the CA information, it is necessary to first operate at least a circuit related to broadcast reception until the CA information can be received.

  In this case, particularly in a portable broadcast receiving terminal, if the power of the secondary battery is insufficient, at least the power supply to the circuits related to the broadcast reception is stopped, and the CA information cannot be received. There is a fear. At that time, the pay program can be viewed by receiving the CA information after charging the secondary battery, but until the CA information can be received after the time for charging the secondary battery and after charging. Even if an attempt is made to watch a program that the user wants to watch immediately after purchasing or contracting for a pay program, it may be possible to wait for the charging time and the time until CA information can be received.

Incidentally, as for receiving viewing contract information, in Patent Document 1, when receiving a digital TV signal including individual information data for repeatedly transmitting individual information such as contract information for a certain period of time, the operation of the digital TV signal receiving means During the reception standby time set by the timer means when the power is turned off, the operating power of the digital TV signal receiving means is forcibly turned on, and individual information data is received and played back. EMM (Entitlement) which is individual information to be transmitted
Management Message) A digital television broadcast receiving apparatus that reliably receives information has been proposed.
JP 2000-59752 A

  However, in the digital television broadcast receiver according to Patent Document 1, wasteful power consumption is suppressed by forcibly turning on the operating power of the digital television signal receiving means during the reception standby time set by the timer means. However, even when reception of EMM information (individual information) is unnecessary, the operation power of the digital television signal receiving means is forcibly turned on during the reception standby time set by the timer means. become.

  For this reason, when such a technique is applied to a portable broadcast receiving terminal, even when reception of CA information including EMM information (individual information) serving as viewing contract information is unnecessary, a circuit related to broadcast reception is only in the timer setting period. This is forcibly turned on, and wastes power. If the power supply can be secured at all times, such as when used indoors, running out of battery becomes a problem even if the power of the digital TV signal receiving means is forcibly turned on during reception standby time to consume unnecessary power. There is nothing. However, if the secondary battery is the main power source, such as a mobile receiver that receives mobile broadcasts, the battery consumption will increase even if the power consumption is reduced by forcibly turning it on intermittently with a timer. There is a problem that the portable broadcast receiving terminal stops operating early. In addition, in the prior art, if the power of the secondary battery is insufficient, at least the power supply to the circuit related to broadcast reception stops, and it becomes impossible to receive CA information. , The charging time and the time until the CA information can be received will be kept waiting.

  By the way, in a portable broadcast receiving terminal, it is ideal that the secondary battery is always in a fully charged state so that the program you want to watch can be watched at any time. If it is possible to operate a circuit related to broadcast reception only when reception is necessary and not to operate a circuit related to broadcast reception when reception of CA information is unnecessary, it is possible to suppress consumption of the secondary battery. At the same time, it is considered that the CA information can be quickly acquired at the user's preferred timing regardless of the state of charge of the secondary battery.

  In view of the above-mentioned problems, the present invention eliminates unnecessary power consumption due to unnecessary reception of CA information during reception standby time, and CA information is obtained at a user's preferred timing regardless of the state of charge of the secondary battery. It is to be able to obtain the program quickly, and to make it possible to see the program that the user wants to watch immediately after purchasing or contracting for a pay program.

The gist of the invention according to claim 1 of the present invention is that in a broadcast receiving terminal capable of receiving viewing contract information and viewing a pay broadcast such as a video program, an audio program, and a data broadcast based on the viewing contract information. A secondary battery for supplying power to the broadcast receiving terminal; a charging means for charging the secondary battery; a viewing contract information receiving means for receiving the viewing contract information; and a broadcast for receiving the broadcast signal of the pay broadcast A receiving means, a reproducing means for reproducing the received pay broadcast, and a control means capable of operating the viewing contract information receiving means in accordance with a mode set when the broadcast receiving terminal is in a standby state. It exists in the broadcast receiving terminal characterized by this.
The gist of the invention according to claim 2 of the present invention is that, when the broadcast receiving terminal is in a standby state, the control means operates the viewing contract information receiving means after the charging of the secondary battery is completed. 2. The broadcast receiving terminal according to claim 1, wherein a standby mode after charging can be executed.
The gist of the invention according to claim 3 of the present invention is that, when the broadcast receiving terminal is in a standby state, the control means starts charging the secondary battery and operates the viewing contract information receiving means. 2. The broadcast receiving terminal according to claim 1, wherein the broadcast receiving terminal can select and execute one of a standby mode and a post-charging standby mode in which the viewing contract information receiving unit is operated after the secondary battery is fully charged. Exist.
According to a fourth aspect of the present invention, there is provided a charging mode in which the control means does not operate the viewing contract information receiving means when the broadcast receiving terminal is in a standby state, and charging of the secondary battery. A standby mode in which the viewing contract information receiving means is operated and a post-charging standby mode in which the viewing contract information receiving means is operated after the secondary battery is fully charged. It exists in the broadcast receiving terminal of Claim 1 characterized by the above-mentioned.
Further, the gist of the invention according to claim 5 of the present invention is that, in the standby mode after charging, the attachment of the secondary battery is detected to generate a battery interruption process, and the reception contract information receiving means receives more than the receiving operation. 5. The broadcast receiving terminal according to claim 2, further comprising battery interrupt generation processing means for preferentially executing the charging operation of the secondary battery.
The gist of the invention according to claim 6 of the present invention is that the control means operates the viewing contract information receiving means when the AC adapter is not operating when the main system power key is detected to be off. A charging mode not to be performed, a standby mode in which charging of the secondary battery is started after the AC adapter starts operating, and the viewing contract information receiving unit is operated, and the secondary battery is started after the AC adapter starts operating. 6. It is possible to select and execute any one of the post-charging standby modes in which the viewing contract information receiving means is operated after the charging is completed. 6. It exists in the broadcast receiving terminal.
The gist of the invention according to claim 7 of the present invention is that charging of the secondary battery in the charging mode and the standby mode after charging is performed at a higher speed than charging in the standby mode. It exists in the broadcast receiving terminal as described in any one of 2 thru | or 6.
The gist of the invention according to claim 8 of the present invention is that a broadcast receiving terminal that receives viewing contract information and can view pay broadcasts such as video programs, audio programs, and data broadcasts based on the viewing contract information. In the control method, an operation mode setting step in which an operation mode when the broadcast receiving terminal is in a standby state can be set to any of a plurality of modes obtained by changing the reception operation of the viewing contract information, and the broadcast receiving terminal The broadcast receiving terminal control method further comprises a control step of executing the reception of the viewing contract information according to the set operation mode when is in a standby state.
The gist of the invention according to claim 9 of the present invention is that, when the broadcast receiving terminal is in a standby state, the control step is performed after the charging of the secondary battery that supplies power to the broadcast receiving terminal is completed. 9. The broadcast receiving terminal control method according to claim 8, wherein a standby mode after charging for starting reception of viewing contract information is executed.
The gist of the invention according to claim 10 of the present invention is that the control step supplies power to the broadcast receiving terminal according to the set operation mode when the broadcast receiving terminal is in a standby state. Select either a standby mode in which charging of the secondary battery is started and reception of the viewing contract information is started or a post-charging standby mode in which reception of the viewing contract information is started after the charging of the secondary battery is completed The broadcast receiving terminal control method according to claim 8 is executed.
The gist of the invention according to claim 11 of the present invention is that the control step is a charging mode in which the viewing contract information is not received according to the set operation mode when the broadcast receiving terminal is in a standby state. A standby mode in which charging of the secondary battery for supplying power to the broadcast receiving terminal is started and reception of the viewing contract information is started; and reception of the viewing contract information after the charging of the secondary battery is completed. 9. The broadcast receiving terminal control method according to claim 8, wherein one of the post-charging standby modes to be started is selected and executed.
The gist of the invention according to claim 12 of the present invention is that, in the standby mode after charging, the attachment of the secondary battery is detected to generate a battery interruption process, and the second operation is performed more than the receiving operation of the viewing contract information. 12. The broadcast receiving terminal control method according to claim 10, wherein the secondary battery charging operation is executed with priority.
The gist of the invention according to claim 13 of the present invention is that, in the control step, when the main system power key is detected and the AC adapter is not operating, the control step depends on the set operation mode. A charging mode in which the viewing contract information is not received, and a standby mode in which charging of the secondary battery that supplies power to the broadcast receiving terminal is started after the AC adapter starts operating and reception of the viewing contract information is started. Selecting and executing a mode and a standby mode after charging in which the secondary battery is charged after the AC adapter starts operating and the reception of the viewing contract information is started after the charging is completed. A broadcast receiving terminal control method according to any one of claims 8 to 12.
The gist of the invention according to claim 14 of the present invention is that charging of the secondary battery in the charging mode and the standby mode after charging is performed at a higher speed than charging in the standby mode. It exists in the control method of the broadcast receiving terminal as described in any one of 10 thru | or 13.

  According to the broadcast receiving terminal of the present invention and the control method thereof, the control means performs the viewing contract information extraction process simultaneously with the charging process for the secondary battery according to the control mode. When you want to watch a program you want to watch immediately later, even if the power of the secondary battery is insufficient, you can quickly and reliably obtain viewing contract information without waiting for the secondary battery to be fully charged can do.

  Further, according to the broadcast receiving terminal and the control method thereof of the present invention, the control unit can control the charging process and the extraction process according to the first control mode (standby mode) or the second control mode (post-charge standby mode). Therefore, the user can freely select the time when the user wants to acquire the viewing contract information, and can quickly acquire the viewing contract information at the user's favorite timing regardless of the state of charge of the secondary battery. .

  Further, according to the broadcast receiving terminal and the control method thereof of the present invention, when the control means does not require the viewing contract information extraction process, the power supply for the viewing contract information extraction process is not performed. The secondary battery can be charged at high speed.

In addition, according to the broadcast receiving terminal and the control method thereof of the present invention, even if a secondary battery is attached later during processing in the second control mode (standby mode after charging), the secondary battery is preferentially charged at high speed. The battery can be charged, and after charging is completed, the standby mode can be entered.

  In the broadcast receiving terminal and its control method in the present embodiment, when the user wants to watch a program that he / she wants to watch immediately after purchasing or contracting for a pay program, the control means performs a charging process for the secondary battery according to the control mode. At the same time, the viewing contract information is extracted, and even if the power of the secondary battery is insufficient, the viewing contract information can be obtained quickly and reliably without waiting until the secondary battery is fully charged. To be able to get to.

  Further, in the broadcast receiving terminal and the control method thereof in the present embodiment, when the viewing contract information may be acquired after the secondary battery has been completely charged, the control unit controls the extraction process after the high-speed charging process. To be done.

  Further, according to the broadcast receiving terminal and the control method thereof of the present invention, when the viewing contract information extraction process is unnecessary, the control means does not supply power for the viewing contract information extraction process, The secondary battery can be charged.

  In addition, in the broadcast receiving terminal and the control method thereof in the present embodiment, in consideration of the fact that the viewing contract information may be acquired after the secondary battery has been charged, or may be desired to be acquired immediately, the control means, The charging process and the extraction process are controlled according to the first control mode or the second control mode, and the user can freely select the time when the viewing contract information is to be acquired, and the charging state of the secondary battery Regardless of this, the viewing contract information can be quickly acquired at the user's preferred timing.

Further, in the broadcast receiving terminal and the control method thereof in this embodiment, even if the secondary battery is attached later during the processing of the second control mode (standby mode after charging), the secondary battery is preferentially charged at high speed. The battery is charged, and after charging is completed, it can be switched to standby mode.

Embodiments of the present invention will be described below.
1 is a diagram showing an embodiment of a broadcast receiving terminal of the present invention, FIG. 2 is a flowchart for explaining operations by the broadcast receiving terminal of FIG. 1, and FIG. 3 is a setting screen in the broadcast receiving terminal of FIG. It is a figure which shows an example.

  As shown in FIG. 1, the broadcast receiving terminal includes an antenna 1, a front end 2, a separation circuit (DEMUX) 3, an audio processing unit 4, an AMP 5, a speaker 6, a video processing unit 7, an OSD circuit 8, a display unit 9, and a main unit. A microcomputer 10, a screen memory 11, a sub-microcomputer 12, an operation unit 13, a charge control unit 14, and a secondary battery 15 are provided. Here, the main circuit involved in broadcast reception is at least the front end 2 and the separation circuit (DEMUX) 3. A region surrounded by a dotted line indicates a portion that operates in the standby mode, and a region surrounded by a one-dot chain line is a portion that operates in the charging mode.

  The front end 2 constitutes reception means, the audio processing unit 4, the AMP 5, the speaker 6, the video processing unit 7, the OSD circuit 8, and the display unit 9 constitute reproduction means, and the separation circuit (DEMUX) 3 is extraction means. The operation unit 13 constitutes a selection unit, the charging control unit 14 constitutes a charging unit, and the main microcomputer 10 and the sub-microcomputer 12 constitute a control unit. Further, the main microcomputer 10 constitutes second control means, and the sub-microcomputer 12 constitutes first control means.

  The antenna 1 receives RF signals of various channels for video broadcasting, audio broadcasting, and data broadcasting. The front end 2 selects a received channel from various received channels according to a user's selection operation using a remote controller (not shown), converts the RF signal into a digital signal, and then descrambles the received channel.

  The separation circuit (DEMUX) 3 converts the digital signal from the front end 2 into CA information (contractor information) including video data, audio data, EPG (electronic program guide) information, and EMM information (individual information) as viewing contract information. ) Etc. The audio processing unit 4 decodes the audio data from the separation circuit (DEMUX) 3, converts it into an analog audio signal, and outputs it.

  The AMP 5 amplifies the analog audio signal from the audio processing unit 4. The speaker 6 outputs the audio signal amplified by the AMP 5. The video processing unit 7 decodes the video data from the separation circuit (DEMUX) 3, converts it into an analog video signal, and outputs it. The OSD circuit 8 causes the display unit 9 to perform on-screen display. The display unit 9 performs display of the video signal from the video processing unit 7 and on-screen display.

  The main microcomputer 10 controls the operation of each unit, exchanges data with the sub-microcomputer 12, and selects any of a charging mode, a post-charging standby mode, and a standby mode, which will be described later, according to a user's selection operation. Execute.

  Here, the charging mode is an operation that only charges the secondary battery 15 and does not receive CA information when the main system power key is “OFF”. In this case, only the part of the region surrounded by the one-dot chain line described above is operated, and the secondary battery 15 is charged at high speed.

  The standby mode after charging, which is the second control mode, is an operation in which, when the main system power key is “OFF”, the secondary battery 15 is charged at high speed, and after charging is completed, the process shifts to reception of CA information. It is. In this case, first, only the portion of the region surrounded by the above-described dashed line is operated, and then the portion of the region surrounded by the above-described dotted line is operated.

  The standby mode, which is the first control mode, is an operation in which, when the main system power key is “OFF”, the CA information is set in the reception state and the secondary battery 15 is charged at the same time. In this case, the portion of the region surrounded by the dotted line is operated.

  Note that at least the audio processing unit 4, the AMP 5, the speaker 6, the video processing unit 7, the OSD circuit 8, and the display unit 9, which are circuits related to audio output and video output, have the main system power key set to “ON” by the user. The main microcomputer 10 is operated.

  The screen memory 11 stores screen data for causing the display unit 9 to perform on-screen display. The screen data includes an energy saving setting screen and an energy saving standby setting screen which will be described later. The sub-microcomputer 12 manages ON / OFF of the main system power supply, and notifies the main microcomputer 10 of information such as selection of on / off of the main system power key from the operation unit 13 and mode selection on the OSD. At the same time, when the secondary battery 15 is charged, a charge start signal is output to the charge control unit 14. The operation unit 13 receives an instruction from the user such as selection of on / off of the main system power key and mode selection on the OSD.

  The on / off selection of the main system power key refers to the act of the user operating the main system power key of the operation unit 13 to turn on / off the main system power. The sub-microcomputer 12 performs ON / OFF control of the output of the secondary battery 15 based on an input from the operation unit 13, a command from the main microcomputer 10, and the like. That is, when the main system power key of the operation unit 13 is “OFF”, the audio processing unit 4, the AMP 5, the speaker 6, the video processing unit 7, the OSD circuit 8, and the display unit 9 are turned off. How the ON / OFF control is performed on the portion surrounded by the chain line and the portion surrounded by the dotted line differs depending on the charging mode, the first control mode, and the second control mode.

  When the charging control unit 14 receives a charging start signal from the sub-microcomputer 12, the charging control unit 14 causes the secondary battery 15 to charge, and when the charging to the secondary battery 15 is completed, notifies the sub-microcomputer 12 of the completion. To do. The charging of the secondary battery 15 is performed when the secondary battery 15 is mounted and power of an AC adapter as an external power source (not shown) is supplied. The end of charging of the secondary battery 15 is notified either when the charging of the secondary battery 15 is completed, when the supply of power to the AC adapter is stopped, or when the secondary battery 15 is removed. Is done. The secondary battery 15 is used as a main system power supply, is charged by a power supply from an AC adapter (not shown), and is detachably attached to a predetermined part of the broadcast receiving terminal body.

Next, the operation of the broadcast receiving terminal will be described.
First, it is assumed that an energy saving setting screen as shown in FIG. The energy saving setting screen has display contents including items of “off timer setting”, “brightness setting”, and “standby setting”.

  Next, as shown in FIG. 2, when the item “Standby setting” is selected from the energy saving setting screen in step S1, an energy saving standby setting screen as shown in FIG. Is done. This energy saving standby setting screen has display contents including items of “charging”, “standby after charging”, and “standby”, and is also a selection screen for selecting any item by the user.

  In step S2, by selecting any of the items “Charging”, “Standby after charging”, and “Standby” from the energy saving standby setting screen, the respective mode flags of charging, standby after charging, and standby are set. The process proceeds to S3, S4, and S5.

  In this case, for example, a flag for a charging mode, a standby mode after charging, and a standby mode are prepared in a memory (not shown), and any of the items “charging”, “standby after charging”, and “standby” is selected. Then, in each of steps S3, S4, and S5, a flag corresponding to each mode is set. In the following steps, the charging mode, the post-charging standby mode, or the standby mode can be shifted based on this flag.

  Next, after detecting that the main system power key of the broadcast receiving terminal is “OFF” in step S6, it is confirmed in step S7 whether or not the AC adapter is operating. If it is confirmed that the AC adapter is operating (in the case of YES), the process proceeds to the standby mode flag determination in step S8. If the AC adapter is not operating (in the case of NO), the process proceeds to step S9. . When the process proceeds to step S <b> 9, the AC adapter is not operating and the broadcast receiving terminal is operating with the secondary battery 15.

  In the mode flag determination in step S8, the mode flag set by the user is determined and the process proceeds to each mode process. That is, if the flag is in the charging mode, the process proceeds to step S10. If the flag is in the standby mode after charging, the process proceeds to step S31. If the flag is in the standby mode, the process proceeds to step S20.

  Further, in the mode flag determination in step S9, the mode flag set by the user is determined and the process proceeds to each mode process. That is, if the flag is in the charging mode, the process proceeds to step S10. If the flag is in the standby mode after charging, the process proceeds to step S27. If the flag is in the standby mode, the process proceeds to step S22.

  Here, the charging mode in step S10 is a process executed when the standby mode flag is determined to be the charging mode in steps S8 and S9. When the process is executed, in step S10, A main system power supply termination request is issued from the main microcomputer 10 to the sub-microcomputer 12. The reason for termination here is included in the issuance of the main system power source termination request and is in charge standby.

  At this time, the sub-microcomputer 12 turns off the main system power supply in step S11 and enters a charging standby state in step S12. Charging standby here is a general standby state where charging starts when the charging conditions are met, or when the main system power key is turned on, the main system power is turned on. It is a state that can be done.

  On the other hand, if it is determined in step S8 that the standby mode is after charging, the process proceeds to step S31.

  Step S31 is a processing step for performing battery interrupt setting. Since the secondary battery 15 can be removed, if the secondary battery 15 is already attached when the process of the flowchart of FIG. 2 starts, it may be not attached, or may be attached in the middle of this process. There are cases. Therefore, assuming that the secondary battery 15 is attached in the middle of the process, a battery interrupt setting process step of step S31 is provided.

  The battery interrupt setting in step S31 is a setting for proceeding to step S13 when the secondary battery 15 is attached during the process and an interrupt occurs. For this reason, a battery interrupt generation process is provided as step S32. Step S32 is a step of generating an interrupt process of proceeding to step S13 when it is detected that the secondary battery 15 is attached while performing the process as the charging standby mode. Note that “when processing as the charging standby mode is being performed” refers to when the standby mode flag is set to the standby mode after charging and steps S20 to S26 are being processed.

  By providing the steps S31 and S32, when the secondary battery 15 is attached later during the processing in the standby mode after charging, the process can proceed to step S13.

  In step S13, it is determined whether or not charging is in progress. This step S13 may be executed after step 31 as described above, or may be executed as an interruption process of step 32 when a battery interruption occurs.

  If it is determined in step S13 that charging is in progress (YES), a main system power supply termination request is issued from the main microcomputer 10 to the sub-microcomputer 12 in step S14. If charging is not in progress (in the case of NO), steps S20 and subsequent steps are performed. Transition to standby mode processing. Note that the reason for termination in step S14 is included in the issuance of the main system power supply termination request as described above, and is activated after charging.

  If it is determined in step S13 that charging is in progress (YES), the secondary battery 15 may not be fully charged. If it is determined that charging is not in progress (NO), the secondary battery 15 is fully charged. It is conceivable that the battery is in a state or the secondary battery 15 is not attached.

  In the description of steps S31 and S32, it has been described that when the secondary battery 15 is attached later, a battery interrupt signal is generated and the process proceeds to step S13. If there is no generation step S32, when the process of step S13 is executed in a state where the secondary battery 15 is not attached, the process proceeds to step 20, and even if the secondary battery 15 is attached later, the secondary battery 15 is removed. It is not possible to proceed to the standby mode after charging to charge with priority. For this reason, when the secondary battery 15 is attached later, the process proceeds to step S13 by interruption processing. As a result, when the secondary battery 15 is attached later, the charging of the secondary battery 15 is first performed at high speed, giving priority to the charging, and after charging is completed, the process proceeds to the standby mode after charging. it can.

  When the sub-microcomputer 12 receives the main system power supply termination request in step 14, the main system power supply is turned off in step S15, and the process proceeds to the charging mode in step S16. Here, the sub-microcomputer 12 switches the charging mode from low speed to high speed. This is because the charging mode does not require the reception of CA information, and the operation of at least the front end 2 and the separation circuit (DEMUX) 3, which are the main circuits related to broadcast reception, is stopped. This is because high-speed charging becomes possible.

  During charging, in step S17, the sub-microcomputer 12 monitors the charging end notification from the charging control unit 14. When the charging end notification is received, the main system power supply is turned on in step S18. In step S19, the sub-microcomputer 12 notifies the main microcomputer 10 of the reason for starting up after charging.

  When the main microcomputer 10 receives the activation reason for activation after charging, the process proceeds to the standby mode processing in step S20 and subsequent steps. Note that the standby mode here also shifts when the mode flag determination in step S8 is the standby mode or when it is determined in step S13 that charging is not being performed (in the case of NO).

  In step S20, the main microcomputer 10 stops unnecessary circuit operations when shifting to the standby mode. The unnecessary circuit here is a circuit related to audio output and video output, and includes at least the audio processing unit 4, the AMP 5, the speaker 6, the video processing unit 7, the OSD circuit 8, and the display unit 9. However, in the standby mode, since the CA information is in a reception state, at least the front end 2 and the separation circuit (DEMUX) 3 which are main circuits related to broadcast reception are operated.

  Next, in step S21, it is determined whether or not the AC adapter is operating. This is because the AC adapter operation is a necessary condition in the standby mode. At this time, if it is determined that the AC adapter is not operating (NO), the process proceeds to step S22 for canceling the standby mode. Step S22 is a process executed even when the mode flag is in the standby mode in step S9. At this time, a main system power supply termination request is issued from the main microcomputer 10 to the sub-microcomputer 12. The reason for termination in this case is AC adapter voltage monitoring. This mode is for starting the main system power supply when the AC adapter is connected.

  In step S23, the sub-microcomputer 12 turns off the main system power supply, and in step S24 monitors the voltage of the AC adapter. When the AC adapter is connected and the voltage of the AC adapter is obtained in step S24 (YES), the main system power supply is turned on by the sub-microcomputer 12 in step S25. Accordingly, at least the front end 2 and the separation circuit (DEMUX) 3 described above, which are the main circuits related to the above-described broadcast reception, are operated, and the CA information is in a reception state.

  At this time, the activation reason that the voltage of the AC adapter is detected is notified from the sub microcomputer 12 to the main microcomputer 10 in step S26. Thereafter, the process proceeds to step S20, and the main microcomputer 10 shifts to the standby mode process again.

  The standby mode is canceled when the user turns on the main system power key. At this time, the main microcomputer 10 operates at least the audio processing unit 4, the AMP 5, the speaker 6, the video processing unit 7, the OSD circuit 8, and the display unit 9, which are circuits related to the above-described audio output and video output.

  In step S9, when the standby mode flag is the standby mode after charging, the process proceeds to step S27.

  In step S27, a main system power supply termination request is issued from the main microcomputer 10 to the sub-microcomputer 12. The reason for termination in step S27 is included in the issuance of the main system power supply termination request, and is activated after charging.

  When the sub-microcomputer 12 receives the main system power supply termination request, the main system power supply is turned off in step S28, and it is confirmed in step S29 whether the AC adapter is operating. If it is confirmed that the AC adapter is operating, the process proceeds to step S30. In step S30, the sub-microcomputer 12 switches the charging mode from low speed to high speed, charging of the secondary battery 15 is started, and then the process proceeds to step S17.

  As described above, in the present embodiment, the main microcomputer 10 controls the charging process and the viewing contract information extraction process in accordance with the first control mode (standby mode) or the second control mode (post-charging standby mode). Since it did in this way, while being able to freely select the time when a user wants to acquire viewing contract information, it is possible to quickly acquire viewing contract information at a user's favorite timing regardless of the state of charge of the secondary battery 15. Can do. In this case, for example, a user who wants to acquire CA information as soon as possible selects the first control mode (standby mode) to acquire CA information periodically transmitted from the satellite in the order of the contractor at the earliest timing. This eliminates the need to wait for the acquisition timing from the next cycle onward due to the necessity of charging processing or the like. Moreover, the user who thinks that CA information may be received after charging the secondary battery 15 should just select 2nd control mode (post-charging standby mode). Moreover, the user who does not need to receive CA information should just select charge mode.

  Specifically, when the main system power key is “OFF”, the main microcomputer 10 instructs the sub-microcomputer 12 to charge the secondary battery 15 and is involved in the reception when the CA information does not need to be received. When the main system power key is “OFF”, the sub-microcomputer 12 is instructed to charge the secondary battery 15 at a high speed when the main system power key is “OFF”. When the post-charge standby mode (second control mode) in which the circuit is operated to shift to the reception of the CA information and the main system power key is “OFF”, the circuit related to reception is operated to set the CA information to the reception state, At the same time, one of the standby modes (first control mode) for instructing the sub-microcomputer 12 to charge the secondary battery 15 is executed. It is possible to select one of the mode when the reception is not necessary and if necessary the information and, when receiving the CA information can be selected and the timing of the reception.

  This enables the user to view the video or audio information immediately after purchasing the product based on the CA information acquired while charging, and to acquire CA information after shortening the charging time and performing high-speed charging. Either a standby mode after charging in which video or audio information can be viewed in a sufficiently charged state, or a charging mode in which only the secondary battery 15 is charged when no CA information needs to be acquired and no CA information acquisition operation is performed. Can be freely set by the user.

  In addition, when the main system power key is not turned “ON” by the user by executing the charging mode, only the secondary battery 15 is charged, so the power of the secondary battery 15 is wasted. It wo n’t happen.

  In addition, by executing the standby mode after charging, priority is given to high-speed charging to the secondary battery 15, and it is possible to automatically shift to reception of CA information after the charging is completed, which is effective for quick charging. .

  In addition, since the standby mode is executed, the charging of the secondary battery 15 and the reception of the CA information proceed at the same time. Even when the power of the battery 15 is insufficient, the viewing contract information can be acquired quickly and reliably without waiting until the charging of the secondary battery 15 is completed.

  In the present embodiment, the case where the CA information is used as the viewing contract information has been described. However, it is needless to say that the viewing contract information other than the CA information may be used.

  The present invention is not limited to broadcast receiving terminals for so-called mobile broadcasts and broadcasts for terrestrial digital mobile devices, which are broadcast services for individuals, but can also be applied to broadcast receiving terminals that receive satellite broadcasts such as BS and CS.

It is a figure which shows one Embodiment of the broadcast receiving terminal of this invention. It is a flowchart for demonstrating the operation | movement by the broadcast receiving terminal of FIG. It is a figure which shows an example of the setting screen in the broadcast receiving terminal of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Antenna 2 ... Front end 3 ... Separation circuit 4 ... Audio | voice processing part 5 ... AMP
6 ... Speaker 7 ... Video processing unit 8 ... OSD circuit 9 ... Display unit
DESCRIPTION OF SYMBOLS 10 ... Main microcomputer 11 ... Screen memory 12 ... Sub microcomputer 13 ... Operation part 14 ... Charge control part 15 ... Secondary battery

Claims (14)

In a broadcast receiving terminal that receives viewing contract information and is capable of viewing pay broadcasts such as video programs, audio programs, and data broadcasts based on the viewing contract information.
A secondary battery for supplying power to the broadcast receiving terminal;
Charging means for charging the secondary battery;
Viewing contract information receiving means for receiving the viewing contract information;
Broadcast receiving means for receiving a broadcast signal of the pay broadcast;
Playback means for playing back the received pay broadcast;
A broadcast receiving terminal comprising a control means capable of operating the viewing contract information receiving means in accordance with a mode set when the broadcast receiving terminal is in a standby state.   2. The control unit according to claim 1, wherein when the broadcast receiving terminal is in a standby state, the control unit can execute a post-charging standby mode in which the viewing contract information receiving unit is operated after charging of the secondary battery is completed. The broadcast receiving terminal described.   The control means includes a standby mode for starting the charging of the secondary battery and operating the viewing contract information receiving means when the broadcast receiving terminal is in a standby state, and after the charging of the secondary battery is completed. The broadcast receiving terminal according to claim 1, wherein the broadcast receiving terminal can select and execute any one of the standby modes after charging for operating the viewing contract information receiving means.   The control means includes a charging mode in which the viewing contract information receiving means is not operated when the broadcast receiving terminal is in a standby state, and a standby mode in which charging of the secondary battery is started and the viewing contract information receiving means is operated. 2. The broadcast receiving terminal according to claim 1, wherein after the charging of the secondary battery is completed, any one of a post-charging standby mode for operating the viewing contract information receiving unit can be selected and executed.   In the standby mode after charging, a battery interrupt that detects the attachment of the secondary battery and generates a battery interrupt process to prioritize the charging operation of the secondary battery over the receiving operation of the viewing contract information receiving means The broadcast receiving terminal according to claim 2, further comprising generation processing means. If the AC adapter is not operating when the main system power key is detected to be off,
A charging mode in which the viewing contract information receiving means is not operated;
A standby mode for starting the charging of the secondary battery while waiting for the operation start of the AC adapter and operating the viewing contract information receiving means;
The standby mode after charging is selected and executed, wherein the secondary battery is charged after the AC adapter starts to operate, and the viewing contract information receiving unit is operated after the charging is completed. The broadcast receiving terminal according to any one of claims 1 to 5.   The broadcast reception according to any one of claims 2 to 6, wherein charging of the secondary battery in the charging mode and the standby mode after charging is performed at a higher speed than charging in the standby mode. Terminal. In a control method for a broadcast receiving terminal that receives viewing contract information and is capable of viewing a pay broadcast such as a video program, an audio program, and a data broadcast based on the viewing contract information.
An operation mode setting step in which the operation mode when the broadcast receiving terminal is in a standby state can be set to any one of a plurality of modes in which the reception operation of the viewing contract information is changed;
A control method for a broadcast receiving terminal, comprising: a control step of executing reception of the viewing contract information according to the set operation mode when the broadcast receiving terminal is in a standby state.   When the broadcast receiving terminal is in a standby state, the control step executes a post-charge standby mode in which reception of the viewing contract information is started after charging of a secondary battery that supplies power to the broadcast receiving terminal is completed. The broadcast receiving terminal control method according to claim 8.   The control step starts charging a secondary battery that supplies power to the broadcast receiving terminal according to the set operation mode when the broadcast receiving terminal is in a standby state, and receives the viewing contract information. The standby mode in which the charging is started and the post-charging standby mode in which reception of the viewing contract information is started after the charging of the secondary battery is completed are selected and executed. Control method of broadcast receiving terminal.   The control step includes a charging mode in which the viewing contract information is not received according to the set operation mode when the broadcast receiving terminal is in a standby state, and a secondary battery that supplies power to the broadcast receiving terminal. Select and execute either a standby mode in which charging starts and reception of the viewing contract information starts or a post-charging standby mode in which reception of the viewing contract information starts after the secondary battery is fully charged The broadcast receiving terminal control method according to claim 8.   In the standby mode after charging, the battery interruption process is detected by detecting the attachment of the secondary battery, and the secondary battery charging operation is prioritized and executed over the viewing contract information receiving operation. The control method of the broadcast receiving terminal according to claim 9 or 11. In the control process, when the main system power key is detected to be off and the AC adapter is not operating, according to the set operation mode,
A charging mode in which the viewing contract information is not received;
Waiting for the start of the operation of the AC adapter to start charging the secondary battery for supplying power to the broadcast receiving terminal and starting to receive the viewing contract information;
The charging of the secondary battery is waited for the start of the operation of the AC adapter, and after the charging is completed, any one of the post-charging standby modes in which reception of the viewing contract information is started is selected and executed. The method for controlling a broadcast receiving terminal according to any one of claims 8 to 12.   The broadcast reception according to any one of claims 10 to 13, wherein charging of the secondary battery in the charging mode and the standby mode after charging is performed at a higher speed than charging in the standby mode. Terminal control method.

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