JP2011109328A - Broadcast receiver and method for controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver which operates in a form of appropriate broadcast reception according to received power amount from a power transmitter, and a method for controlling the same. <P>SOLUTION: In the broadcast receiver, a power comparator 110 compares the received power amount by a power receiving part 108 with thresholds V1, V2 to transmit information showing comparison results to a control part 111. The control part 111 issues an instruction for performing ON/OFF control of a power switch of a power supply part 109 based on the information showing the comparison results by the power comparator 110 to perform power ON/OFF control of tuner parts 102, 103. The power supply part 109 receives power received by the power receiving part 108, and supplies the received power to the tuner parts 102, 103 and each block which requires power supply according to the instruction from the control part 111. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a broadcast receiving apparatus driven by power transmitted from a power transmitting apparatus by a non-contact power transmission method and a control method thereof.

  Conventionally, since there are few restrictions on installation locations and user convenience is high, the power receiving function of the non-contact power transmission method using electromagnetic induction or electromagnetic waves (method of transmitting power without using metal contacts or connectors) Research and development of broadcasting receivers with In recent years, a technique for transmitting 60 W of power to a distance of about 2 m has been studied by efficiently transmitting energy by using a resonance phenomenon of a magnetic field that vibrates in the order of several MHz for power transmission.

  Patent Document 1 below discloses a non-contact power transmission (non-contact power transmission) system capable of adjusting the transmission power of one power transmission device to match the rated power of the device on the power receiving device side. ing. Patent Document 2 discloses a wireless transmission system capable of wirelessly transmitting optimum power according to the usage status of the apparatus.

  In the following Patent Document 3, in a broadcast receiving apparatus capable of switching and displaying a 1-segment broadcast signal and a 12-segment broadcast signal, the broadcast content of the 1-segment broadcast signal when the remaining battery power becomes a predetermined amount or less. A technique for displaying is disclosed.

JP 2008-206327 A JP 2006-197734 A JP 2008-278084 A

  The technique disclosed in Patent Document 3 described above relates to a broadcast receiving apparatus driven by a battery. On the other hand, in the case of the non-contact power transmission method, the amount of power received from the power supply source may increase or decrease due to the distance between the power supply source and the broadcast receiving apparatus, the direction of the apparatus, obstacles existing between the apparatuses, and the like. Here, if the amount of power received from the power supply source becomes smaller than the amount of power consumed by the broadcast receiving device, there is a problem that the system of the broadcast receiving device suddenly goes down.

  In view of the above, an object of the present invention is to provide a broadcast receiving apparatus that can operate in an appropriate form of broadcast reception in accordance with the amount of received power from the power transmitting apparatus, and a control method therefor.

  In order to solve the above-described problem, a broadcast receiving apparatus according to the present invention is a broadcast receiving apparatus that is driven by electric power transmitted from a power transmitting apparatus by a non-contact power transmission method, and receives a first broadcast signal. 1 broadcast receiving means, a second broadcast receiving means for receiving a second broadcast signal, a second broadcast receiving means having lower power consumption than the first broadcast receiving means, and a power transmitted from the power transmission device Based on the power receiving means for receiving the power, the power comparing means for outputting the information indicating the comparison result, comparing the received power amount per unit time by the power receiving means with a predetermined threshold, and the information indicating the comparison result, When the received power amount is greater than or equal to the threshold value, the received power by the power receiving unit is supplied to the first broadcast receiving unit without being supplied to the second broadcast receiving unit, and when the received power amount is less than the threshold value, the received power unit Power received by the first broadcast The means to supply the second broadcast receiving unit without supplying, and control means for controlling the supply of received power.

  According to the present invention, in a broadcast receiving device that is driven by power transmitted from a power transmission device by a non-contact power transmission method, appropriate broadcast can be performed by performing supply control of received power according to the amount of received power from the power transmission device. It is possible to operate in the form of reception.

It is a block diagram which shows the structure of the broadcast receiving apparatus and power transmission apparatus which concern on Embodiment 1 of this invention. It is the figure which illustrated the table which shows power consumption, and a control table. 3 is a flowchart for explaining operations of a power comparison unit and a control unit shown in FIG. 1. It is a block diagram which shows the structure of the broadcast receiver which concerns on Embodiment 2 of this invention. 5 is a flowchart for explaining operations of a power comparison unit and a control unit shown in FIG. 4.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1A is a block diagram showing a configuration of broadcast receiving apparatus 100 according to Embodiment 1 of the present invention, and FIG. 1B shows a configuration of power transmission apparatus 200 according to Embodiment 1 of the present invention. It is a block diagram. The broadcast receiving apparatus 100 includes a broadcast receiving antenna 101, tuner units 102 and 103, a signal separation unit 104, a video decoder 105, and a data processing unit 106. The broadcast receiving apparatus 100 includes a power receiving antenna 107, a power receiving unit 108, a power supply unit 109, a power comparison unit 110, a control unit 111, a display unit 112, a remote control receiving unit 113, a table storage unit 114, and a message generation unit 115. Prepare. The power transmission device 200 includes a power supply unit 201, a power transmission unit 202, and a power transmission antenna 203. The broadcast receiving apparatus 100 is driven by power transmitted from the power transmitting apparatus 200 by the non-contact power transmission method.

  In the present embodiment, tuner section 102 (first broadcast receiving means) is a tuner module compatible with terrestrial digital broadcasting, and tuner section 103 (second broadcast receiving means) is a tuner module compatible with one-segment broadcasting. It will be explained as a thing. However, the present invention is not limited to this, and it is sufficient that the power consumption of the tuner unit 103 is lower than the power consumption of the tuner unit 102. For example, a combination of satellite digital broadcasting and one-segment broadcasting, a combination of terrestrial digital broadcasting and satellite digital broadcasting, a combination of terrestrial digital broadcasting and Internet broadcasting, or the like may be used.

  In Japanese terrestrial digital broadcasting, the frequency bandwidth 6 MHz of one channel is divided into 13 segments. 12 segments are allocated to high definition (HD) broadcasting, and 4 segments are allocated to standard definition (SD) broadcasting. In addition, one segment is allocated to a mobile terminal (such as a mobile phone), and low-resolution one-segment broadcasting is performed.

  The tuner unit 102 receives a terrestrial digital broadcast signal (first broadcast signal) via the broadcast receiving antenna 101, performs a process of selecting a signal of a designated frequency, a demodulation process, and an error correction process, and performs TS processing. The (transport stream) signal is output. The tuner unit 103 receives a one-segment broadcast signal (second broadcast signal) included in the digital terrestrial broadcast signal via the broadcast receiving antenna 101, selects a signal having a specified frequency, a demodulation process, and error correction. Processing is performed to output a TS (transport stream) signal. It is assumed that the user can operate the remote controller to give a start instruction or a channel selection instruction. The remote control receiving unit 113 transmits an instruction signal from the remote control to the control unit 111. The control unit 111 performs channel selection control of the tuner units 102 and 103 in accordance with an instruction signal from the remote controller.

  The signal separation unit 104 separates the TS signal output from the tuner units 102 and 103 into a video signal, an audio signal, and a data signal. The signal separation unit 104 selects and outputs the output signal of one of the tuner unit 102 and the tuner unit 103 in accordance with an instruction from the control unit 111. The video signal separated by the signal separation unit 104 is output to the video decoder 105, and the data signal is output to the data processing unit 106. Note that the video signal separated by the signal separation unit 104 is output to an audio decoder (not shown).

  The video decoder 105 decodes (decodes) the encoded video signal. Specifically, for example, a video signal encoded according to the MPEG (Moving Picture Experts Group) -2 standard, The video signal encoded according to the H.264 standard is decoded. The data processing unit 106 decodes (decodes) the encoded data signal. Specifically, data such as data broadcasting data, program information, and caption information is decoded to generate a data broadcasting screen, an EPG (Electronic Program Guide) screen, and the like. The program information is information such as program name, broadcast date and time, program content, etc. included in the EIT described in the PSI / SI table defined by ARIB (Radio Industry Association) standard STD-B10. EIT is an abbreviation for “Event Information Table”, and PSI / SI is an abbreviation for “Program Specific Information / Specific Information”.

  The display unit 112 includes, for example, a 1920 × 1080 pixel HD display panel, and displays the video signal decoded by the video decoder 105. Further, various screens generated by the data processing unit 106 are displayed in OSD (On Screen Display).

  The power transmission device 200 includes a power supply unit 201, a power transmission unit 202, and a power transmission antenna 203. The power plug of the power transmission apparatus 200 is connected to, for example, a power outlet installed on a wall. The power supply unit 201 outputs AC power supplied to the home to the power transmission unit 202. The power transmission antenna 203 is an antenna corresponding to the non-contact power transmission method, and includes, for example, an LC resonance circuit including a coil and a capacitor. The power transmission unit 202 transmits the AC power received from the power source unit 201 via the power transmission antenna 203 by a non-contact power transmission method using a predetermined resonance frequency that can be received by the power reception antenna 107.

  The power receiving antenna 107 is an antenna corresponding to the non-contact power transmission method, and includes, for example, an LC resonance circuit including a coil and a capacitor. It is assumed that the resonance frequency of the power receiving antenna 107 is set to the same resonance frequency as that of the power transmission antenna 203. The configuration of power transmission / reception is not limited to the above-described configuration, and any configuration may be used as long as it is a wireless non-contact power transmission method that does not use a cable or the like.

  The power receiving unit 108 smoothes the power received via the power receiving antenna 107, converts it into necessary power for each block of the broadcast receiving apparatus 100, and supplies it. In addition, the power receiving unit 108 transmits information (received power amount information) indicating the received power amount per unit time (for example, 1 second) to the power comparing unit 110. The voltage received by the power receiving antenna 107 increases as the received power increases. Therefore, the power receiving unit 108 can obtain the amount of received power per unit time from the received voltage received by the power receiving antenna 107. Note that the power receiving unit 108 may transmit the maximum received power amount information that can be received from the power transmission device 200 to the power comparison unit 110.

  FIG. 2A is a diagram illustrating a table 400 indicating the power consumption amounts of the tuner units 102 and 103, and FIG. 2B is a diagram for controlling the operation state of the tuner units 102 and 103 in accordance with the received power amount. It is the figure which illustrated this control table 500. The table 400 and the control table 500 are stored in the table storage unit 114 in advance. As shown in FIG. 2A, the power consumption of the tuner unit 102 corresponding to terrestrial digital broadcasting is 1 W, and the power consumption of the tuner unit 103 corresponding to one-segment broadcasting is 0.1 W. The power consumption of the other blocks excluding the tuner units 102 and 103 is 3 W. Further, as shown in FIG. 2B, the control table 500 specifies that the tuner units 102 and 103 should be turned off when the amount of power received by the power receiving unit 108 is less than 3.1 W. Has been. Further, when the amount of power received by the power receiving unit 108 is 3.1 W or more and less than 4 W, the tuner unit 102 is in a power-off state and the tuner unit 103 is in a power-on state. The control table 500 stipulates that the tuner unit 103 should be in the ON state and the power source OFF state.

  Returning to FIG. 1 again, the power comparison unit 110 receives information indicating the received power amount per unit time from the power receiving unit 108, and refers to the control table 500 stored in the table storage unit 114 to determine the received power amount. Compare with thresholds 3.1W and 4W. Then, information indicating the comparison result is transmitted to the control unit 111. Here, the information indicating the comparison result is power ON / OFF control information of the tuner units 102 and 103.

  The control unit 111 issues an instruction to turn on / off the power switch of the power supply unit 109 based on information indicating the comparison result by the power comparison unit 110, and performs power on / off control of the tuner units 102 and 103. In this way, the control unit 111 performs supply power supply control by the power receiving unit 108. The power supply unit 109 receives the power received by the power receiving unit 108 and supplies the power to the tuner units 102 and 103 and each block that requires power according to an instruction from the control unit 111. Further, the control unit 111 instructs the message generation unit 115 to generate various messages based on the comparison result by the power comparison unit 110. The message generator 115 generates various messages according to instructions from the controller 111 and outputs them to the display unit 112.

  Next, operations of the power comparison unit 110 and the control unit 111 will be described in detail. FIG. 3 is a flowchart for explaining the operations of the power comparison unit 110 and the control unit 111. Note that the operation shown in FIG. 3 is described as being executed when the broadcast receiving apparatus 100 is powered on. However, it may be repeatedly executed at predetermined time intervals after the broadcast receiver 100 is turned on, or may be executed at a predetermined time such as a preset time or at the start of program viewing.

  First, in step S <b> 301, the power comparison unit 110 acquires information indicating the amount of received power per unit time from the power reception unit 108. In step S302, the control table 500 stored in the table storage unit 114 is referred to, and the received power amount is compared with the threshold value V2 (= 4W). If it is determined that the amount of received power is equal to or greater than the threshold value V2 (= 4W), the process proceeds to step S303, and the tuner unit 102 is turned on and the tuner unit 103 is turned off as information indicating the comparison result. Control information to be transmitted to the control unit 111. The control unit 111 instructs the power supply unit 109 to turn on the tuner unit 102 and turn the tuner unit 103 into a power off state, and controls the supply of received power. The power supply unit 109 performs ON / OFF control of the power switch so that the power received by the power receiving unit 108 is supplied only to the tuner unit 102 of the tuner units 102 and 103. In addition, the control unit 111 controls the tuner unit 102 and the signal separation unit 104 that are in the power-on state to perform channel selection processing and tuner initialization. As a result, the video related to the terrestrial digital broadcast signal received by the tuner unit 102 is displayed on the display unit 112.

  If it is determined in step S302 that the amount of received power is less than the threshold value V2 (= 4 W), the process proceeds to step S304. In step S304, the power comparison unit 110 compares the received power amount with a threshold value V1 (= 3.1 W). If it is determined that the amount of received power is equal to or greater than the threshold value V1 (= 3.1 W), the process proceeds to step S305, and the tuner unit 102 is turned off and the tuner unit 103 is turned on as information indicating the comparison result. Control information to be turned on is transmitted to the control unit 111. The control unit 111 instructs the power supply unit 109 to turn the tuner unit 102 in a power-off state and the tuner unit 103 in a power-on state, and controls supply of received power. The power supply unit 109 performs ON / OFF control of the power switch so that the power received by the power receiving unit 108 is supplied only to the tuner unit 103 among the tuner units 102 and 103. In addition, the control unit 111 controls the tuner unit 103 and the signal separation unit 104 that have been turned on to perform channel selection processing and tuner initialization. As a result, the video related to the one-segment broadcasting signal received by the tuner unit 103 is displayed on the display unit 112.

  Subsequently, in step S306, based on the comparison result by the power comparison unit 110, the control unit 111 notifies the message generation unit 115 that “the received power is insufficient and cannot receive the terrestrial digital broadcast. The one-segment broadcast is received. Instructions to generate a message such as The message generator 115 generates the message in accordance with an instruction from the controller 111 and outputs the message to the display unit 112 for a certain period.

  When it is determined in step S304 that the amount of received power is less than the threshold value V1 (= 3.1 W), the process proceeds to step S307, and control is performed to turn off the tuner units 102 and 103 as information indicating the comparison result. Information is transmitted to the control unit 111. The control unit 111 instructs the power supply unit 109 to turn off the tuner units 102 and 103 and controls supply of received power. The power supply unit 109 performs ON / OFF control of the power switch so that the power received by the power receiving unit 108 is not supplied to any of the tuner units 102 and 103.

  Subsequently, in step S308, based on the comparison result by the power comparison unit 110, the control unit 111 “cannot receive terrestrial digital broadcast and one-segment broadcast because received power is insufficient” to the message generation unit 115. The instruction to generate the message is issued. The message generator 115 generates the message in accordance with an instruction from the controller 111 and outputs the message to the display unit 112 for a certain period.

  As described above, in the first embodiment, power ON / OFF control of the tuner units 102 and 103 is performed according to the amount of power received by the power receiving unit 108. Thereby, it becomes possible to operate | move in the form of an appropriate broadcast reception according to the received electric energy from a power transmission apparatus. Further, since the power consumption amount of the broadcast receiving apparatus 100 is suppressed to less than the received power amount, the system of the broadcast receiving apparatus 100 is controlled to always operate stably without going down. In addition, when the received power is sufficiently high, a tuner unit with high power consumption is used, so that broadcast viewing with high image quality and high bit rate can be enjoyed.

  In the present embodiment, the configuration in which the control unit 111 performs power ON / OFF control of the tuner units 102 and 103 has been described as an example. However, the tuner units 102 and 103 are set in a standby state instead of being turned off. Good. Moreover, the threshold values V1 and V2 used by the power comparison unit 110 may be sufficiently higher than the power consumption of the tuner units 102 and 103. Further, the thresholds V1 and V2 used by the power comparison unit 110 may be provided with hysteresis so that the operation states of the tuner units 102 and 103 are not frequently switched. Moreover, although the structure which the power comparison part 110 uses the control table 500 was demonstrated, the structure which measures the power consumption of each block of the broadcast receiving apparatus 100, and compares a measurement result and received power may be sufficient.

  In addition, although the case where the number of tuner units is two is illustrated, even when the number of tuner units is three or more, the operation state of the tuner unit is controlled according to the amount of power received by the power receiving unit 108. A similar effect can be obtained. In addition, although the non-contact power transmission method is exemplified, for example, even if a power receiving method using a solar cell that converts sunlight into electric power, or a power generation device regardless of whether it is built-in or external, the amount of received power or the amount of power generated The same control can be performed according to.

(Embodiment 2)
FIG. 4 is a block diagram showing a configuration of broadcast receiving apparatus 600 according to Embodiment 2 of the present invention. 4 is different from the broadcast receiving apparatus 100 of FIG. 1A in that a program information storage unit 601 and a program determination unit 602 are added. Further, the power comparison unit 110, the control unit 111, and the message generation unit 115 are replaced with a power comparison unit 603, a control unit 604, and a message generation unit 605, respectively. In addition, about the block which has the same function as the block demonstrated in Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted. The broadcast receiving device 600 is driven by the power transmitted from the power transmission device 200 by the non-contact power transmission method.

  The program information storage unit 601 stores program information (information such as program name, broadcast date and time, program content, etc.) acquired by the data processing unit 106. Specifically, when the tuner unit 102 is powered on, the program information of the digital terrestrial broadcast program content received by the tuner unit 102 is stored. When the tuner unit 103 is turned on, the program information of the program content of the one-segment broadcasting received by the tuner unit 103 is stored. Further, the program information for one week of terrestrial digital broadcasting received by the tuner unit 102 and the program information for one week of one-segment broadcasting received by the tuner unit 103 are periodically received and stored.

  The program determination unit 602 compares the digital terrestrial broadcast program information held in the program information storage unit 601 with the one-segment broadcast program information, and the program content having the same (or equivalent) content is transmitted as a simulcast (simal cast broadcast). ) Is determined. The control unit 604 controls the message generation unit 605 to generate an appropriate message based on the determination result by the program determination unit 602.

  The power comparison unit 603 receives information indicating the amount of received power per unit time from the power reception unit 108 repeatedly at predetermined time intervals (for example, every few seconds) after the broadcast receiver 600 is powered on. Then, referring to the control table 500 stored in the table storage unit 114, the received power amount is compared with the threshold values 3.1W and 4W. The power comparison unit 603 is in a state where the received power amount is less than the threshold value of 3.1 W, the received power amount is greater than the threshold value of 3.1 W and less than the threshold value of 4 W, and the received power amount is greater than the threshold value of 4 W. In the case of a change, information indicating the comparison result is transmitted to the control unit 604. Here, the information indicating the comparison result is power ON / OFF control information of the tuner units 102 and 103.

  The control unit 604 issues an instruction for ON / OFF control of the power switch of the power supply unit 109 based on information indicating the comparison result by the power comparison unit 603, and performs power ON / OFF control of the tuner units 102 and 103. In this way, the control unit 604 performs control of supply of received power by the power receiving unit 108. The power supply unit 109 receives the power received by the power receiving unit 108 and supplies it to the tuner units 102 and 103 and each block that requires power according to an instruction from the control unit 604. The control unit 604 performs channel selection processing and tuner initialization control for the tuner units 102 and 103 and the signal separation unit 104. In addition, the control unit 604 instructs the message generation unit 605 to generate various messages based on the comparison result by the power comparison unit 603. The message generation unit 605 generates various messages according to instructions from the control unit 604 and outputs them to the display unit 112.

  Next, operations of the power comparison unit 603 and the control unit 604 shown in FIG. 4 will be described in detail. FIG. 5 is a flowchart for explaining operations of the power comparison unit 603 and the control unit 604. Note that the operation shown in FIG. 5 is repeatedly executed at predetermined time intervals (for example, at intervals of several seconds) after the power of the broadcast receiving apparatus 600 is turned on.

  First, in step S <b> 701, the power comparison unit 603 acquires information indicating the amount of received power per unit time from the power reception unit 108. In step S702, the received power amount is compared with threshold values V1 (= 3.1W) and V2 (= 4W) with reference to the control table 500 stored in the table storage unit 114. Here, it is determined whether or not the received power amount has changed from a state where the received power amount is equal to or greater than the threshold value V1 (= 3.1 W) and less than the threshold value V2 (= 4 W) to a state where the received power amount is equal to or greater than the threshold value V2 (= 4 W). . When it is determined that the state has changed as described above, the process proceeds to step S703.

  In step S703, the program determination unit 602 compares the digital terrestrial broadcast program information stored in the program information storage unit 601 with the one-segment broadcast program information, and the program content having the same (or equivalent) content is simultaneously broadcast. It is determined whether or not it has been done. Here, if it is determined that simultaneous broadcasting is not being performed, the process proceeds to step S704. In step S <b> 704, the control unit 604 instructs the message generation unit 605 to generate a message such as “Because the received power has increased, terrestrial digital broadcasting can be viewed, but there is no simulcast program content”. . The message generation unit 605 generates the message according to an instruction from the control unit 604 and outputs the message to the display unit 112 for a certain period. In this case, since the control unit 111 keeps the tuner unit 102 in the power-off state and the tuner unit 103 in the power-on state, the video related to the one-segment broadcasting signal received by the tuner unit 103 is continuously displayed on the display unit 112.

  On the other hand, if it is determined in step S703 that simulcasting is being performed, the process proceeds to step S705. In step S705, the control unit 604 instructs the power supply unit 109 to switch the tuner unit 102 from the power OFF state to the power ON state, and to switch the tuner unit 103 from the power ON state to the power OFF state. Control power supply. The power supply unit 109 controls the power switch ON / OFF so that the power reception unit 108 starts supplying the received power to the tuner unit 102 and stops the supply to the tuner unit 103.

  Next, in step S <b> 706, the control unit 604 refers to the program information stored in the program information storage unit 601 and controls the tuner unit 102 so as to receive the program content of the simulcast. Specifically, control is performed so that the channel of the terrestrial digital broadcast program content having the same (or equivalent) content as the one-segment broadcast program content selected by the tuner unit 103 is selected.

  In step S707, the control unit 604 sends a message to the message generation unit 605 such as “Since the received power has increased, the one-segment broadcasting has been switched to the terrestrial digital broadcasting. The program content of the simulcast is being displayed.” Give instructions to generate. The message generation unit 605 generates the message according to an instruction from the control unit 604 and outputs the message to the display unit 112 for a certain period.

  In step S702 described above, the amount of received power has changed from a state where the received power amount is greater than or equal to the threshold value V1 (= 3.1 W) and less than the threshold value V2 (= 4 W) to a state where the received power amount is greater than or equal to the threshold value V2 (= 4 W). If not, the process proceeds to step S708. In step S708, the power comparison unit 603 determines that the received power amount is greater than or equal to the threshold value V1 (= 3.1W) and less than the threshold value V2 (= 4W) from the state where the received power amount is greater than or equal to the threshold value V2 (= 4W). It is determined whether or not it has changed. When it is determined that the state has changed as described above, the process proceeds to step S709.

  In step S709, the program determination unit 602 compares the digital terrestrial broadcast program information stored in the program information storage unit 601 with the one-segment broadcast program information, and the same (or equivalent) program content is simultaneously broadcast. It is determined whether or not it has been done. Here, if it is determined that simultaneous broadcasting is not being performed, the process proceeds to step S710. In step S <b> 710, the control unit 604 instructs the power supply unit 109 to switch the tuner unit 102 from the power-on state to the power-off state, and controls received power supply. The power supply unit 109 performs ON / OFF control of the power switch so that the power received by the power receiving unit 108 is not supplied to any of the tuner units 102 and 103. Subsequently, in step S711, the control unit 604 instructs the message generation unit 605 to generate a message such as “There is not enough power to receive terrestrial digital broadcasting. There is no program content for simulcast”. Put out. The message generation unit 605 generates the message according to an instruction from the control unit 604 and outputs the message to the display unit 112 for a certain period. In this case, since both the tuner units 102 and 103 are in the power OFF state, the message is displayed on the display unit 112 for a certain period, and then the power of the broadcast receiving device 600 is shut down.

  On the other hand, if it is determined in step S709 that simulcast is being performed, the process proceeds to step S712. In step S712, the control unit 604 instructs the power supply unit 109 to switch the tuner unit 102 from the power-on state to the power-off state and to switch the tuner unit 103 from the power-off state to the power-on state. The power supply unit 109 performs on / off control of the power switch so that the power reception unit 108 stops the supply of the received power to the tuner unit 102 and starts the supply to the tuner unit 103.

  Next, in step S713, the control unit 604 refers to the program information stored in the program information storage unit 601, and controls the tuner unit 103 so as to receive the program content of the simulcast. Specifically, control is performed so that the channel of the one-segment broadcast program content having the same (or equivalent) content as the digital terrestrial broadcast program content selected by the tuner unit 102 is selected.

  In step S714, the control unit 604 sends a message to the message generation unit 605 such as “Since the received power is insufficient, the terrestrial digital broadcasting is switched to the one-segment broadcasting. The program content of the simulcast is being displayed.” Give instructions to generate. The message generation unit 605 generates the message according to an instruction from the control unit 604 and outputs the message to the display unit 112 for a certain period.

  As described above, in the second embodiment, when the received power amount changes, the power ON / OFF control of the tuner units 102 and 103 is performed according to the received power amount by the power receiving unit 108. Thereby, it becomes possible to operate | move in the form of an appropriate broadcast reception according to the received electric energy from a power transmission apparatus. If there is a program content of simulcast, the program content of the same (or equivalent) can be continuously viewed by displaying the program content of simulcast.

  When the control unit 604 selects and controls the tuner units 102 and 103 in steps S706 and S710, the channel of the terrestrial digital broadcast or the one-segment broadcast having the same frequency is selected without using the above-described channel list. You may do it.

  The tuner unit 102 is a tuner module that supports terrestrial digital broadcasting, and the tuner unit 103 is not limited to be a tuner module that supports one-segment broadcasting. For example, a combination of satellite digital broadcasting and one-segment broadcasting, a combination of terrestrial digital broadcasting and satellite digital broadcasting, a combination of terrestrial digital broadcasting and Internet broadcasting, or the like may be used as long as simultaneous broadcasting is performed.

(Other examples)
The present invention can also be realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, or the like) of the system or apparatus reads the program. It is a process to be executed.

DESCRIPTION OF SYMBOLS 100 Broadcast receiving apparatus 101 Broadcast receiving antenna 102,103 Tuner part 104 Signal separation part 105 Image output part 106 Data processing part 107 Power receiving antenna 108 Power receiving part 109 Power supply part 110 Power comparison part 111 Control part 112 Display part 113 Remote control receiving part 114 Table storage unit 115 Message generation unit

Claims (7)

A broadcast receiving device driven by power transmitted from a power transmission device by a non-contact power transmission method,
First broadcast receiving means for receiving a first broadcast signal;
A second broadcast receiving means for receiving a second broadcast signal, wherein the second broadcast receiving means consumes less power than the first broadcast receiving means;
Power receiving means for receiving power transmitted from the power transmission device by a non-contact power transmission method;
A power comparison unit that compares the amount of received power per unit time by the power reception unit with a predetermined threshold value and outputs information indicating a comparison result;
Based on the information indicating the comparison result, when the amount of received power is equal to or greater than the threshold, the first broadcast receiving unit does not supply the received power by the power receiving unit to the second broadcast receiving unit. If the received power amount is less than the threshold value, the received power is supplied to the second broadcast receiving means without supplying the received power by the power receiving means to the first broadcast receiving means. A broadcast receiving apparatus comprising control means for performing supply control. Further, the program information of the program content transmitted by the first and second broadcast signals is acquired and held from the first and second broadcast signals received by the first and second broadcast receiving means. Program information storage means for
The control means starts supplying the received power to the first broadcast receiving means when the received power amount changes from a state below the threshold to a state above the threshold, and the second broadcast The first broadcast receiving means receives the program content having the same content as the program content received by the second broadcast receiving means, and stops the supply of received power to the receiving means. The broadcast receiving apparatus according to claim 1, wherein the broadcast receiving means is controlled.   The control means, when the received power amount changes from a state below the threshold to a state above the threshold, the program content having the same content as the program content received by the second broadcast receiving means. 3. If reception by one broadcast receiving means is not possible, the power received by the power receiving means is not supplied to the first broadcast receiving means but continues to be supplied to the second broadcast receiving means. The broadcast receiving apparatus described in 1. Further, the program information of the program content transmitted by the first and second broadcast signals is acquired and held from the first and second broadcast signals received by the first and second broadcast receiving means. Program information storage means for
The control means stops the supply of the received power to the first broadcast receiving means when the received power amount changes from a state equal to or greater than the threshold to a state less than the threshold, and the second broadcast The second broadcast receiving means receives the program content having the same content as the program content received by the first broadcast receiving means by starting the supply of received power to the receiving means. The broadcast receiving apparatus according to claim 1, wherein the broadcast receiving means is controlled.   The control means, when the amount of received power changes from a state greater than or equal to the threshold to a state less than the threshold, the program content having the same content as the program content received by the first broadcast receiving means. When reception by the second broadcast receiving unit is not possible, supply power supply control is performed so that the power received by the power receiving unit is not supplied to any of the first and second broadcast receiving units. Item 5. The broadcast receiving device according to Item 4. The first broadcast signal is a digital broadcast signal, and the first broadcast receiving means is a tuner module corresponding to the digital broadcast;
6. The method according to claim 1, wherein the second broadcast signal is a one-segment broadcast signal, and the second broadcast receiving means is a tuner module corresponding to the one-segment broadcast. The broadcast receiving device according to item. A first broadcast receiving means for receiving the first broadcast signal and a second broadcast receiving means for receiving the second broadcast signal, wherein the second broadcast consumes less power than the first broadcast receiving means. A broadcast reception device control method that is driven by power transmitted from a power transmission device by a non-contact power transmission method.
A power receiving step of receiving power transmitted from the power transmission device by a non-contact power transmission method;
A power comparison step of comparing the amount of received power per unit time in the power reception step with a predetermined threshold and outputting information indicating the comparison result;
Based on the information indicating the comparison result, when the amount of received power is equal to or greater than the threshold, the first broadcast receiving unit does not supply the received power from the power receiving step to the second broadcast receiving unit. If the received power amount is less than the threshold value, the received power is supplied to the second broadcast receiving means without supplying the received power in the power receiving step to the first broadcast receiving means. And a control step for controlling the supply of the broadcast receiving apparatus.

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