JP2006060345A - Signal-receiving device and method, recording medium, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely update software, without obstructing user's viewing. <P>SOLUTION: When the (AC) power source is turned ON at t24, a signal-receiving device starts the software in a normal state; and when there is updated data in a nonvolatile memory at t25 and an operation of a specified function is not reserved at time close to the current time, an update start selecting screen is displayed on a display. When the update start selecting screen is displayed on the display, the signal receiving device temporarily changes the power-ON state to a standby state at t26, in response to update-start indication or a specified time later, while in the absence of a user's remote control operation etc., as it is, to erase the display on the display and starts updating the software of the signal receiving device at t27 by using the update data. This invention is applicable to a signal-receiving device which receives a broadcast signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a signal receiving apparatus and method, a recording medium, and a program, and in particular, a signal receiving apparatus and method, a recording medium, and a software that can reliably update software without interfering with a user's viewing action. And the program.

  As shown in Non-Patent Document 1, in digital television broadcasting, a receiver's software program (hereinafter referred to as software) using radio waves (broadcast waves) transmitted from a broadcasting station (broadcasting company). A mechanism for transmitting and receiving data (hereinafter referred to as update data) including software for updating the software (hereinafter referred to as update software) is operated. For example, the update data includes compressed update software, information about update software such as version information, and the like.

  In this operation, download notification information indicating that update data will be distributed in advance is multiplexed with the broadcast wave and periodically transmitted from the broadcast station. The receiver can selectively receive the update data by monitoring the download notification information and comparing the version information of the download notification information with its own version information.

  Therefore, the receiver receives the transport stream transmitted by the specific service (channel) notified by the download notification information at the time notified by the download notification information, and extracts update data from the received transport stream. However, as shown in Patent Document 1, the software of the receiver is updated by storing the data in the nonvolatile memory and then expanding the update data stored in the nonvolatile memory at a certain timing. . As a result, the software of the receiver is updated to the latest software without human intervention.

  With reference to FIG. 1, an example of acquisition timing of update data and update timing of software using the acquired update data in a conventional receiver will be described.

  In the example of FIG. 1, the elapse of time is shown toward the left side, and the power states of four receivers in the normal state, the standby state, the updating state, and the partial standby state are shown in order from the top. ing.

  The normal state represents a state in which AC power is supplied to the receiver, software is executed, the function as the receiver is operating, and the video of the received broadcast content is displayed on the display.

  The standby state is different from the AC power off state where the main power supply of the receiver is instructed to be turned off or the AC power supply to the receiver is cut off when the power plug is removed from the outlet. By operating a power button provided on the remote control (hereinafter referred to as a remote control) and instructing power off (hereinafter referred to as remote control off with respect to AC power off), the receiver can change the power status. The display is turned off without power being supplied to the display or the like, and when the user operates the power button on the remote control, the power is turned on (hereinafter referred to as AC (main) power on, remote control on). Or waiting for a button corresponding to remote control ON to be instructed.

  That is, the standby state is a state in which AC power is supplied to the receiver and the software of the receiver is operating, but no AC power is supplied to the display and nothing is displayed on the display. In response to an operation such as turning off the remote control, it is possible to immediately transition to the normal state

  The updating state represents a state in which the receiver temporarily resets the execution of software and updates the software using the update data. That is, in the updating state, the software is not executed, and most functions of the receiver are not provided to the user. In the updating state, when the user's operation on the remote control is accepted, the operability may be limited depending on the software rewriting method.

  In the partial standby state, AC power is supplied to the receiver, and when the standby state has elapsed for a predetermined period of time, resources that enable only instructions from the remote controller or the like operated by the user operate. Represents the state of being. That is, when a user's operation such as turning off the remote control is accepted in a partially standby state, the receiver once transitions to the standby state and then transitions to the normal state.

  In the example of FIG. 1, first, a receiver in a normal state receives a broadcast signal and displays a video corresponding to the broadcast signal on a display. The user who was viewing the video of the broadcast content displayed on the display operates the remote controller at timing t1 to end the viewing of the broadcast content, and instructs the receiver to turn off the remote control.

  The receiver transitions the power supply state from the normal state to the standby state in response to a remote control off instruction from the user at timing t1. As a result, in the receiver, AC power is supplied to the receiver and the software is operating, but the display is turned off.

  At timing t <b> 2 when a predetermined time has elapsed since entering the standby state, the receiver changes the power supply state from the standby state to the partial standby state. As a result, the receiver is in a state where only an instruction from a remote controller or the like by a user operation can be accepted. At this time, the receiver shifts the power supply state from the partially standby state to the standby state at a timing t3 slightly before the time notified by the download notification information acquired in advance (timing t4). Set the built-in timer.

  Thereby, at the timing t3, the set timer is started, the power supply state is partially changed from the standby state to the standby state, and the software is executed. Then, at timing t4, which is the time notified by the download notification information, the standby receiver starts acquiring update data, and ends acquisition of update data at timing t5.

  At the timing t6 after the update data acquisition, the receiver in the standby state temporarily resets the receiver software in order to update the receiver software using the update data. In other words, the receiver temporarily shuts off the power supply of the receiver, terminates the software, and then updates the software using the update data. At this time, the receiver is in an updating state, and an instruction from a remote controller or the like by a user operation may be limited.

  Then, at timing t7 when the software update is completed, the receiver causes the updated software to be executed in the standby state, and at time t8 when a predetermined time has elapsed from timing t7, the power supply state is partially changed from the standby state. A transition is made to the standby state, and standby is performed until an instruction from the remote controller by a user operation is accepted.

  The software reset method described above is not limited to the interruption of the power supply, but may be a reset at the software level.

  As described above, in the conventional receiver, the update data is acquired in the standby state, and when the update data is completed, the software of the receiver is temporarily reset and the software update process is performed.

  That is, in the case of the example of FIG. 1, the update data is not always broadcast on the service (channel) that the user is viewing, so when the user is viewing the broadcast content with the receiver, Since the receiver cannot select a service for broadcasting the update data and it is difficult to acquire the update data, the receiver has acquired the update data in a standby state.

  Correspondingly, Patent Document 2 proposes a multi-input-compatible receiver that can acquire update data even while a user is viewing broadcast content. That is, this receiver has two tuner blocks, and even when a user is watching broadcast content using one tuner block, the other tuner block is used to update data. You can select the service that will be broadcast. Thereby, even if the user is viewing the broadcast content, the update data can be acquired.

  Next, with reference to FIG. 2, an example of acquisition timing of update data of a multi-input compatible receiver and timing of software update using the acquired update data will be described. FIG. 2 shows another example of the update data acquisition timing of FIG. 1 and the timing of software update using the acquired update data.

  The receiver in the normal state receives the broadcast signal and displays the video corresponding to the broadcast signal on the display, as in the example of FIG. In the case of the example in FIG. 2, since the receiver is a multi-input capable receiver, the receiver starts to acquire update data at timing t11 that is the time notified by the download notification information in the normal state, and at timing t12. Then, the acquisition of the update data is finished.

  In order to end viewing of the broadcast content, the user operates the remote controller at timing t13 after timing t12 to instruct the receiver to turn off the remote control.

  At timing t13, the receiver changes the power supply state from the normal state to the standby state in response to a remote control off instruction from the user. As a result, in the receiver, AC power is supplied to the receiver and the software is operating, but the display is turned off.

  At a timing t14 when a predetermined time has elapsed after entering the standby state, the standby receiver uses the update data to temporarily reset the receiver software in order to update the receiver software. In other words, the receiver temporarily shuts off the power supply of the receiver, terminates the software, and then updates the software using the update data.

  Then, at timing t15 when the software update is completed, the receiver causes the updated software to be executed in the standby state, and at time t16 when a predetermined time has elapsed from timing t15, the power supply state is partially changed from the standby state. A transition is made to the standby state, and standby is performed until an instruction from the remote controller by a user operation is accepted.

  As described above, a receiver that supports multi-input obtains update data in a normal state where a user is viewing broadcast content, and once the receiver is in a standby state, the receiver software is temporarily reset. The update process was performed.

  That is, in both the case of FIG. 1 and FIG. 2, the update of the software currently being executed with the acquired update data requires the receiver to be reset once (the power supply is cut off). Was difficult to perform when watching broadcast content. Therefore, conventionally, the software update is performed in a standby state in which the display on the display is erased based on an operation of turning off the remote control by the user.

Digital Broadcasting Receiver Standard ARIB STD-B21, 4.0 Edition, Download Function, Japan Radio Industry Association, H15.2.6, P. 120 and P.I. 178 JP 2002-112133 A JP 2002-319871 A

  As described above, in the conventional method, regardless of whether update data acquisition is performed in a standby state in which remote control off is instructed or in a normal state during viewing of broadcast content, software update is performed as follows: It is technically difficult to execute while viewing broadcast content, and software update once required a transition to a standby state based on a user's remote control-off operation.

  Therefore, for example, when the viewing of broadcast content is finished, it is used by a user who turns off the AC power supply to cut off the power supply with the aim of saving power, rather than turning off the remote control using the remote control for the receiver. In the receiver, the transition to the standby state based on the operation of turning off the remote control is not executed, so that there is a problem that it is difficult to update the software.

  In addition, in the receiver that supports multi-input described above, it is possible to display a confirmation screen as to whether or not to update software after acquiring update data. It is unclear whether it will be done, and there has been a problem that hinders the user's viewing act on the way.

  The present invention has been made in view of such a situation, and makes it possible to reliably update software without hindering a user's viewing action.

The signal receiving apparatus according to the present invention includes a data determination unit that determines whether or not update data for updating its own software is stored in the non-volatile memory when the AC power supply is detected, and the data determination unit Display control means for controlling the display of a selection screen for allowing the user to select whether or not to update his / her software when it is determined that update data is stored in the storage memory, and during the display of the selection screen And updating means for updating own software using update data stored in a non-volatile memory when an instruction to update own software is input by a user's operation. .

  When an instruction other than updating the user's own software is input by a user operation while the selection screen is displayed, the display control means can prohibit the display of the selection screen.

  It further comprises time determining means for determining whether or not a state in which the predetermined instruction by the user's operation is not input during the selection screen is displayed for a predetermined time, and the predetermined instruction by the user's operation is received by the time determining means. Even when it is determined that the state of no input has continued for a predetermined time, the update means can update its own software using the update data stored in the nonvolatile memory.

  When it is determined by the data determination means that the update data is stored in the nonvolatile memory, the data determination means further comprises a reservation determination means for determining whether or not the operation of the predetermined function is reserved at a time close to the current time, If it is determined by the reservation determination means that the operation of the predetermined function is reserved at a time close to the current time, the display control means can prohibit the display of the selection screen.

  Display or non-display of the selection screen whose display is controlled by the display control means when it is determined that the AC power is turned on and the data determination means determines that the update data is stored in the nonvolatile memory , Can be set in advance.

  A first signal receiving means for receiving a broadcast signal of the first channel, and when a broadcast signal for normal viewing is received by the first signal receiving means, the first channel or other than the first channel; Data acquisition means for acquiring update data from the second signal receiving means for receiving the second channel broadcast signal and the second broadcast signal received by the second signal receiving means and storing the update data in the nonvolatile memory Means.

  The signal receiving method according to the present invention includes a data determination step for determining whether or not update data for updating its own software is stored in the nonvolatile memory when an AC power supply is detected, and processing of the data determination step When it is determined that the update data is stored in the nonvolatile memory, the display control step for controlling the display of the selection screen for allowing the user to select whether or not to update the own software, and the selection screen An update step of updating the own software using update data stored in the nonvolatile memory when an instruction to update the own software is input by a user operation during display. And

  The program recorded in the recording medium of the present invention is a data determination step for determining whether update data for updating its own software is stored in the nonvolatile memory when it is detected that the AC power is turned on, Display control step for controlling the display of a selection screen for allowing the user to select whether or not to update his / her software when it is determined that the update data is stored in the nonvolatile memory by the processing of the data determination step And an update step of updating the own software using update data stored in the nonvolatile memory when an instruction to update the own software is input by a user operation while the selection screen is displayed. It is characterized by including.

  The program according to the present invention is a non-volatile memory by a data determination step for determining whether or not update data for updating its own software is stored in the non-volatile memory when the power-on of the AC is detected, and the data determination step. Display control step for controlling the display of a selection screen for allowing the user to select whether or not to update his / her software when it is determined that update data is stored in the memory, and during the display of the selection screen And an update step of updating the own software using the update data stored in the nonvolatile memory when an instruction to update the own software is input by a user operation. .

  In the present invention, when the AC power supply is detected, it is determined whether update data for updating its own software is stored in the nonvolatile memory, and the update data is stored in the nonvolatile memory. If it is determined, the display of the selection screen for allowing the user to select whether or not to update his / her software is controlled, and an instruction to update his / her software is given by the user's operation during the display of the selection screen. When input, the own software is updated using the update data stored in the nonvolatile memory.

  According to the present invention, software can be reliably updated without disturbing the viewing of the user. Furthermore, according to the present invention, software can be reliably updated without bothering the user.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of the present invention will be described below. The correspondence relationship between the disclosed invention and the embodiments is exemplified as follows. Although there are embodiments which are described in this specification but are not described here as corresponding to the invention, the embodiments correspond to the invention. It does not mean that it is not a thing. Conversely, even if an embodiment is described herein as corresponding to an invention, that means that the embodiment does not correspond to an invention other than the invention. Absent.

  Further, this description does not mean all the inventions described in the specification. In other words, this description is for the invention described in the specification and not claimed in this application, i.e., for the invention that will be applied for in the future or that will appear as a result of amendment and added. It does not deny existence.

The signal receiving device according to claim 1 (for example, the signal receiving device 1 in FIG. 3) has its own software stored in the non-volatile memory (for example, the non-volatile memory 22 in FIG. 3) when the AC power supply is detected. The data determination unit (for example, the update data determination unit 61 in FIG. 4) for determining whether or not update data to be updated is stored and the data determination unit determines that the update data is stored in the nonvolatile memory If so, display control means (for example, display control in FIG. 4) for controlling the display of a selection screen (for example, the update start selection screen 101 in FIG. 6) for allowing the user to select whether or not to update his / her software. Part 55) and the user's operation (for example, the operation of the start button 121 in FIG. 6) during the display of the selection screen, if an instruction to update his / her software is input, Using the update data stored in the re-updating means for updating its own software (e.g., software update section 57 of FIG. 4); and a.

  According to a third aspect of the present invention, there is provided a signal receiving device for determining whether or not a state in which a predetermined instruction by a user operation is not input continues for a predetermined time while the selection screen is displayed (for example, FIG. 4). In addition, when it is determined that the state in which the predetermined instruction by the user's operation is not input by the time determination unit has continued for a predetermined time, the update unit is stored in the nonvolatile memory. It is possible to update the own software using the update data.

  In the signal receiving device according to claim 4, whether or not the operation of the predetermined function is reserved at a time close to the current time when the data determination unit determines that the update data is stored in the nonvolatile memory. A reservation determination unit (for example, the reservation information determination unit 62 in FIG. 4) for determining whether the operation of a predetermined function is reserved at a time close to the current time by the reservation determination unit, The display control means can prohibit the display of the selection screen.

  The signal receiving apparatus according to claim 6 is normally configured by a first signal receiving unit (for example, the front end unit 31-1 in FIG. 3) that receives the broadcast signal of the first channel and the first signal receiving unit. Second signal receiving means for receiving the broadcast signal of the first channel or the second channel other than the first channel when the broadcast signal for viewing is received (for example, the front end unit in FIG. 3) 31-2) and data acquisition means for acquiring update data from the second broadcast signal received by the second signal receiving means and storing it in the nonvolatile memory (for example, the update data acquisition unit 52 in FIG. 4). Can be further provided.

  The signal reception method according to claim 7 is a data determination step for determining whether or not update data for updating its own software is stored in the nonvolatile memory when the AC power supply is detected (for example, FIG. 9, when the update data is determined to be stored in the non-volatile memory by the processing of the data determination step, the selection screen for allowing the user to select whether or not to update the own software is displayed. When a display control step for controlling the display (for example, step S36 in FIG. 9) and a user's operation to update the software are input during display of the selection screen, they are stored in the nonvolatile memory. And an update step (for example, step S39 in FIG. 9) for updating its own software using the update data that is stored.

  Note that the recording medium according to claim 8 and the program according to claim 9 are basically the same in configuration as the signal receiving method according to claim 7 described above, and are therefore repeated, so that the description thereof is omitted. To do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 3 shows a configuration example of a signal receiving apparatus to which the present invention is applied. The signal receiving device 1 receives and selects a broadcast signal from a broadcasting station (broadcasting device) that performs terrestrial digital broadcasting via an antenna 11, outputs the video from the display 12, and outputs the sound from the speaker 13. Output more. The broadcast signal is not limited to terrestrial digital broadcast, but may be a broadcast signal from a broadcasting station such as BS (Broadcast Satellite) digital broadcast, CS (Communications Satellite) digital broadcast, or terrestrial analog broadcast.

  In the example of FIG. 3, a non-volatile memory 22, a RAM (Random Access Memory) 23, a light receiving unit 24, and a power supply unit 25 are connected to a CPU (Central Processing Unit) 21.

  When the CPU 21 detects that AC power is turned on by the power supply unit 25, the CPU 21 controls the power supply by the power supply unit 25 and also stores a software program stored in the nonvolatile memory 22 (hereinafter simply referred to as software or Are also loaded into the RAM 23, and each part of the signal receiving device 1 is controlled in accordance with a software program loaded into the RAM 23 or a user instruction signal obtained via the light receiving unit 24, etc. Execute.

  The non-volatile memory 22 includes, for example, flash memory, EEPROM (Electrically Erasable and Programmable Read Only Memory), HDD (Hard Disk Drive), MRAM (Magnetoresistive Random Access Memory), FeRAM (Ferroelectric Random Access Memory, ferroelectric) Body memory), OUM (Ovonic Unified Memory), and other rewritable nonvolatile memories. The nonvolatile memory 22 stores various programs (including software programs) executed by the CPU 21, download notification information acquired from broadcast signals, data including software for updating software, and the like. The nonvolatile memory 22 also stores information on the service (channel) being selected and reservation information (for example, recording reservation information) of a predetermined function set by the user.

  The RAM 23 appropriately stores programs used in the execution of the CPU 21 and data necessary for the CPU 21 to execute various processes.

  The light receiving unit 24 receives a remote control code (infrared signal) emitted from a remote controller (not shown) operated by a user (hereinafter referred to as a remote controller), and supplies the received instruction signal to the CPU 21.

  The power supply unit 25 is used when a main power button (not shown) provided on the surface of the signal receiving device 1 is pressed when the power plug is inserted into the outlet, or when the power plug is disconnected from the outlet. When the power plug is inserted into the outlet, the AC power supplied from the outlet is turned on to the CPU 21, and then the power state described later is set under the control of the CPU 21, and the signal receiving device is set according to the power state. 1 is supplied with power.

  The CPU 21 has a network interface (I / F) 27, a drive 28, front end units 31-1 and 31-2, descramblers 32-1 and 32-2, and demultiplexers 33-1 and 33 via a bus 26. -2, MPEG (Moving Picture Experts Group) decoder 34, video signal processing unit 35, and audio signal processing unit 36 are connected, and execute predetermined processing under the control of CPU 21.

  The network interface 27 is configured by a modem, an IEEE802.3 interface, and the like, establishes a data link with a server connected to a network (not shown), and performs FTP (File Transfer Protocol) or HTTP (Hyper Text Transport) as necessary. Predetermined data is communicated by a data transfer protocol such as Protocol.

The drive 28 includes a magnetic disk (including a flexible disk), an optical disk (CD
A recording medium 29 including a ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disc), a magneto-optical disc (including MD (Mini-Disc) (registered trademark)), or a semiconductor memory is appropriately used. Installed. The drive 28 reads data and programs from the recording medium 29 and writes data. The program read from the recording medium 29 is stored in the nonvolatile memory 22 or the RAM 23 and installed as necessary.

  The front end units 31-1 and 31-2 extract a broadcast signal corresponding to the user or the channel selection of the CPU 21 from the broadcast signal received via the antenna 11, demodulate, and generate a transport stream. The data is output to the descrambler 32-1 and the descrambler 32-2.

  The descramblers 32-1 and 32-2 appropriately de-scramble the transport streams input from the front end units 31-1 and 31-2, and output them to the demultiplexers 33-1 and 33-2, respectively. .

  The demultiplexers 33-1 and 33-2 separate the multiplexed transport streams input from the descramblers 32-1 and 32-2, respectively, into streams such as video or audio data and section data. The demultiplexers 33-1 and 33-2 output the separated video data and audio data to the MPEG decoder 34, and output only necessary section data to the CPU 21.

  The MPEG decoder 34 decodes the video data from the demultiplexer 33-1 or 33-2, outputs it to the video signal processing unit 35, decodes the audio data from the demultiplexer 33-1 or 33-2, Output to the audio signal processing unit 36.

  The CPU 21 expands each piece of information of the section data from the demultiplexer 33-1 or the demultiplexer 33-2 in the RAM 23, and converts it into a non-volatile memory 22 or the RAM 23 as needed and stores it in an appropriate format. The section data includes a DSM-CC section used for data broadcasting and data download, download notification information (SDTT (Software Download Trigger Table)), EPG (Electronic Program Guide) information, and the like.

  The DSM-CC section includes data (hereinafter referred to as update data) including information related to the update software, such as data obtained by compressing software for updating software executed by the CPU 21 (hereinafter referred to as update software) and the version of the update software. Are included).

  The download notification information is information that is periodically transmitted from a broadcasting station using a predetermined service before update data is distributed. The download notification information includes a distribution time at which update data is distributed, and distribution of update data. Service, the version of the update software included in the update data, and the like.

  The video signal processing unit 35 adds (superimposes) data broadcast data or the like to the video data from the MPEG decoder 34, converts the data into an NTSC format signal, and displays the video on the display 12. The audio signal processing unit 36 causes the audio data from the MPEG decoder 34 to be output from the speaker 13.

  As described above, the signal receiving apparatus 1 includes the tuner block including the front end unit 31-1, the descrambler 32-1, and the demultiplexer 33-1, the front end unit 31-2, the descrambler 32-2, Two sets of tuner blocks each including the demultiplexer 33-2 are configured.

  Therefore, the broadcast signal of the channel selected by the user is processed in the tuner block including the front end unit 31-1, the descrambler 32-1, and the demultiplexer 33-1, and the MPEG decoder 34 and the video signal processing unit 35 are processed. The CPU 21 transmits the broadcast signal of the channel selected based on the download notification information acquired in advance to the front end unit 31-2, the descrambler 32-2, Processing is performed in a tuner block including the demultiplexer 33-2, and update data can be acquired from the broadcast signal and stored in the nonvolatile memory 22.

  That is, in the signal receiving device 1 of FIG. 3, since two tuner blocks are configured, update data can be acquired even when the user is still viewing the content of the desired channel.

  Hereinafter, the tuner block including the front end unit 31-1, the descrambler 32-1, and the demultiplexer 33-1 will be described as a tuner block for viewing a program, and the front end unit 31-2, the descrambler 32- 2 and the demultiplexer 33-2 will be described as a tuner block for update data. On the other hand, when it is not necessary to individually distinguish the front end units 31-1 and 31-2, the descramblers 32-1 and 32-2, the demultiplexer 33-1 and the demultiplexer 33-2, These are simply referred to as a front end unit 31, a descrambler 32, and a demultiplexer 33.

  FIG. 4 shows a functional configuration example of the signal receiving apparatus 1. The functional blocks shown in FIG. 4 are realized by executing a software program stored in the nonvolatile memory 22 by the CPU 21 of FIG.

  The notification information acquisition unit 51 acquires download notification information from the section data input from the demultiplexer 33. If the acquired download notification information is download notification information necessary for the signal receiving device 1, the download notification information is displayed. Store in the nonvolatile memory 22.

  The update data acquisition unit 52 determines the download start time of update data based on the download notification information stored in the nonvolatile memory 22 by the notification information acquisition unit 51. Then, the update data acquisition unit 52 controls the channel selection unit 53 when the download start time comes, and the service (channel) described in the download notification information is transmitted to the update data acquisition front-end unit 31-2. Is selected, the demultiplexer 33-2 is controlled, update data is acquired from the broadcast signal of the service selected by the channel selection unit 53, and the acquired update data is temporarily stored in the nonvolatile memory 22.

  The channel selection unit 53 provides the service of the broadcast signal input to the program viewing front end unit 31-1 based on the instruction signal input via the light receiving unit 24 and the service stored in the nonvolatile memory 22. Under the control of the channel selection or update data acquisition unit 52, select the service of the broadcast signal input to the front end unit 31-2 for update data acquisition, information on the service being selected, Store in the nonvolatile memory 22.

  The data determination unit 54 includes an update data determination unit 61 and a reservation information determination unit 62. Based on the determination result of at least one of the update data determination unit 61 and the reservation information determination unit 62, the software update unit 57 updates the software. Or the display control unit 55 starts to control the display of the update start selection screen for the user to select whether or not to update the software. When the data determination unit 54 causes the display control unit 55 to start displaying the update start selection screen, the data determination unit 54 notifies the instruction determination unit 56 that the update start selection screen is being displayed together with the instruction. .

  The update data determination unit 61 determines whether or not all the update data necessary for updating the software is stored in the nonvolatile memory 22. That is, if the update data determination unit 61 determines that all necessary update data is stored in the nonvolatile memory 22, the update data determination unit 61 controls the software update unit 57 to start software update or display control. The unit 55 is controlled to start displaying the update start selection screen. On the other hand, if the update data determination unit 61 determines that the necessary update data is not stored, the update data determination unit 61 prohibits the software update unit 57 from updating the software, or the display control unit 55 displays the update start selection screen. Ban.

  The reservation information determination unit 62 stores reservation information (for example, recording information) of a predetermined function scheduled to be executed at a time close to the current time in the nonvolatile memory 22 (that is, a time close to the current time). Whether the operation of the predetermined function is reserved). That is, if the reservation information determination unit 62 determines that the operation of the predetermined function is not reserved at a time close to the current time, the reservation information determination unit 62 controls the software update unit 57 to start updating or displaying the software. The controller 55 is controlled to start displaying the update start selection screen. On the other hand, if the reservation information determination unit 62 determines that the operation of the predetermined function is reserved at a time close to the current time, the reservation information determination unit 62 prohibits the software update by the software update unit 57 or the display control unit 55. The display of the update start selection screen by is prohibited.

  The display control unit 55 controls display or non-display of the update start selection screen on the display 12 under the control of the data determination unit 54 or the instruction determination unit 56.

  The instruction determination unit 56 controls the display control unit 55 according to a user instruction signal input via the light receiving unit 24 when the update start selection screen is displayed on the display 12, and updates start selection. Display of the screen is prohibited or the software update unit 57 is controlled to start software update.

  The software update unit 57 controls the power supply unit 25 under the control of the data determination unit 54 or the instruction determination unit 56 to set the power supply state to a standby state, and after reset, AC power is supplied to the CPU 21. The software stored in the non-volatile memory 22 is set to be updated by the update data stored in the non-volatile memory 22, and then the power supply unit 25 is controlled, and the signal receiving device 1 Is reset once, the software of the signal receiving apparatus 1 is updated.

  Next, with reference to FIG. 5, an example of update data acquisition of the signal receiving device 1 and software update timing using the acquired update data will be described.

  In the example of FIG. 5, the passage of time is shown toward the left side, and the states of the three signal reception devices 1 in the normal state, the standby state, and the updating state are shown in order from the top.

  Here, the power supply state of the signal receiving apparatus 1 will be described in detail. The power supply state is set by the power supply unit 25 according to the control of the CPU 21, and the power supply unit 25 supplies power to each unit of the signal receiving device 1 according to the set power supply state.

  Examples of the power supply state of the signal receiving device 1 include an AC power supply off state, a standby state, an updating state, and a partial standby state, as in the case described above with reference to FIG. In FIG. 5, illustration of a partly standby state is omitted.

  The AC power off state is a state in which the supply of AC power to the receiver is cut off when an unillustrated main power button of the signal receiving device 1 is instructed to be turned off or the unillustrated power plug is removed from the outlet. It is.

  In the normal state, the AC power is supplied to the signal receiving device 1, the software is executed, the functions of each unit as the signal receiving device 1 are operating, and the video of the received broadcast content is displayed on the display 12. Represents the state of being.

  In the standby state, unlike the AC power off state, AC power is supplied. In the standby state, when the user operates the power button provided on the remote controller to instruct power off (hereinafter referred to as remote control off for AC power off), the signal receiving device 1 The change is accepted, power is not supplied to the display 12 or the like, the display 12 disappears, and the user operates the power button on the remote control to turn on the power (hereinafter referred to as remote control on relative to AC power on). ), Or in a state of waiting for a button corresponding to remote control ON to be instructed to the light receiving unit 24.

  That is, in the standby state, AC power is supplied to the signal receiving device 1 and the software (each functional block in FIG. 4) of the signal receiving device 1 is operating, but nothing is displayed on the display 12. This state is a state that can be immediately shifted to the normal state in response to an operation input to the light receiving unit 24 such as a user's remote control off.

  The update-in-progress state represents a state in which the signal receiving device 1 once resets execution of software and updates the software using the update data. That is, in the updating state, the software is not executed, and most functions of the signal receiving device 1 are not provided to the user.

  Note that if the user's remote control operation is accepted in the updating state, operability may be limited depending on the software rewriting method. For example, when the operation of the remote control is accepted, the signal receiving device 1 interrupts the software update (rewrite) and executes the old software program, or another program that is not the update target, on the screen. “Operation invalid” may be displayed.

  The partial standby state represents a state in which resources (for example, the light receiving unit 24) that only accept instructions from a remote controller or the like operated by a user when the standby state has elapsed for a predetermined time are operating. . That is, when a user's operation such as turning off the remote control is accepted in a partially standby state, the signal receiving device 1 transitions to the standby state and then transitions to the normal state.

  In the example of FIG. 5, the signal receiving device 1 in the normal state receives a broadcast signal and displays a video corresponding to the broadcast signal on the display 12. Since the signal receiving device 1 has two sets of tuner blocks as in the example of FIG. 2, the update data acquisition unit 52 is in the normal state at timing t21 that is the time notified by the download notification information. Then, the update data starts to be acquired, and the acquisition of the update data ends at the timing t22.

  The user performs an operation of cutting off the supply of AC power to the signal receiving device 1 at the timing t23 after the timing t22 in order to end viewing of the broadcast content. That is, the user instructs to turn off a main power button (not shown) of the signal receiving device 1 or removes a power plug (not shown) from the outlet. Correspondingly, at timing t23, the supply of AC power to the signal receiving device 1 is cut off, and the signal receiving device 1 enters the AC power off state.

  The user performs an operation corresponding to the previous operation in order to view the broadcast content again at an arbitrary timing t24 after the supply of AC power to the signal receiving device 1 is interrupted. In response to this, the supply of AC power is resumed. That is, the user instructs to turn on the main power button of the signal receiving device 1 or inserts the power plug into the outlet. Correspondingly, when AC power is turned on from the power supply unit 25, the CPU 21 starts up the software in a normal state at timing t24, supplies power to each unit of the signal receiving device 1, and broadcast signals. And the video corresponding to the broadcast signal is displayed on the display 12.

  At timing t25 after the signal receiving device 1 is activated, the update data determination unit 61 determines whether or not there is update data in the nonvolatile memory 22, and if there is update data in the nonvolatile memory 22, Further, the reservation information determination unit 62 determines whether or not an operation of a predetermined function is reserved in the nonvolatile memory 22 at a time close to the current time. That is, since the functions of the signal receiving device 1 can hardly be provided during the software update, it is started during the software update by checking the reservation information of the predetermined function started at a time close to the current time. It is suppressed that the scheduled function is ignored.

  When the operation of the predetermined function is not reserved in the nonvolatile memory 22 at a time close to the current time, the display control unit 55 causes the display 12 to display an update start selection screen as shown in FIG. .

  FIG. 6 shows an example of the update start selection screen displayed on the display 12. The update start selection screen 101 includes a title display unit 111 on which characters of “version upgrade” indicating that the screen is a software update (version upgrade) screen, and a main display unit located below the title display unit 111. 112.

  In the case of the example in FIG. 6, the main display unit 112 displays “Upgrade to new downloaded software. Once power is turned off, restart the computer. Do you want to start now?” “Do nothing. For example, a version update will start in a few seconds ”, a message prompting the software update process is displayed. At the bottom of the message, a start button 121 indicating“ start ”and a cancel button indicating“ stop ” 122 is displayed.

  When the update start selection screen 101 as described above is displayed on the display 12, the start button 121 is operated by the user operating an arrow key or a determination key (not shown) provided on the remote control at a timing t26. Is selected, the instruction determination unit 56 causes the software update unit 57 to start software update. The software update unit 57 controls the power supply unit 25 at timing t26 to temporarily change the power supply state to the standby state and erase the display on the display 12. Thereafter, at timing t <b> 27, the software updating unit 57 once resets the signal receiving device 1 in order to update the software of the signal receiving device 1 using the update data.

  At this time, before resetting, the software updating unit 57 once cuts off the power supply of the signal receiving device 1 (ends the software), and then when the power of the signal receiving device 1 is supplied next, The software is set to be updated using the update data. The software reset method is not limited to the interruption of the power supply, and may be a reset at the software level.

  Therefore, at the timing t <b> 27 when the power of the signal reception device 1 is supplied by the power supply unit 25, the CPU 21 updates the software using the update data based on the setting of the software update unit 57. At this time, the signal receiving device 1 is in an updating state, and an instruction from a remote controller or the like by a user operation may be limited.

  Then, at the timing t28 when the software update is completed, the CPU 21 controls the power supply unit 25 to set it to the standby state, and executes the updated software in the standby state. The CPU 21 controls the power supply unit 25 at a timing t29 when a predetermined time has elapsed from the execution of the software, makes the transition from the standby state to the normal state, and changes the state of the signal processing device 1 to each unit according to the normal state. Power is supplied according to the normal state. As a result, the reception function of the signal reception device 1 is operated, and an image corresponding to the received broadcast signal is displayed on the display 12.

  Note that when the update start selection screen 101 is displayed on the display 12, the processing after the timing t26 is executed even when a predetermined time has passed without any remote control operation by the user. As a result, the software update can be performed even when the user (clerk) is not in front of the signal receiving device when the AC power is turned on, such as an exhibition signal receiving device installed in a store. Executed. That is, software update can be performed without bothering the user.

  On the other hand, when the update start selection screen 101 is displayed on the display 12, when the user selects the cancel button 122, an operation for viewing the program such as channel selection or volume operation is instructed. In such a case, the signal receiving apparatus 1 prohibits the display of the update start selection screen 101, so that the update start selection screen 101 is deleted from the display on the display 12. At this time, the update data remains held in the nonvolatile memory 22 and is used when the update process is performed next time, that is, when the AC power is turned on.

  In the example of FIG. 5, the case has been described in which the update start selection screen 101 is displayed to confirm whether or not to start the software update to the user. However, as described with reference to FIG. For this reason, the update start selection screen 101 may be configured not to be displayed.

  FIG. 7 shows another example of the update data acquisition timing of FIG. 5 and the software update timing using the acquired update data. Note that portions corresponding to those in FIG. 5 are repeated, and thus detailed description thereof will be omitted as appropriate.

  In the example of FIG. 7, the signal receiving device 1 in the normal state receives a broadcast signal and displays a video corresponding to the broadcast signal on the display 12. The update data acquisition unit 52 starts acquiring the update data at the timing t31 that is the time notified by the download notification information in the normal state, and ends the acquisition of the update data at the timing t32.

  The user performs an operation of cutting off the supply of AC power to the signal receiving device 1 in order to end the viewing of the broadcast content at a timing t33 after the timing t32. Correspondingly, at timing t33, the supply of AC power to the signal receiving device 1 is cut off, and the signal receiving device 1 enters the AC power off state.

  The user performs an operation corresponding to the previous operation in order to view the broadcast content again at an arbitrary timing t34 after the supply of AC power to the signal receiving apparatus 1 is interrupted. AC power is supplied. When power is supplied, the CPU 21 activates software in a normal state at timing t34, supplies power to each unit of the signal receiving device 1, receives a broadcast signal, and displays a video corresponding to the broadcast signal. 12 is displayed.

  At timing t <b> 35 after the signal reception device 1 is activated, the update data determination unit 61 determines whether there is update data in the nonvolatile memory 22. When there is update data in the nonvolatile memory 22, the reservation information determination unit 62 determines whether or not an operation of a predetermined function is reserved in the nonvolatile memory 22 at a time close to the current time.

  When the operation of a predetermined function is not reserved in the nonvolatile memory 22 at a time close to the current time, the software update unit 57 controls the power supply unit 25 to temporarily change the power supply state to the standby state. Then, the display on the display 12 is erased, and at the subsequent timing t36, the software update is started.

  In other words, the software update unit 57 once resets the signal reception device 1 in order to update the software of the signal reception device 1 using the update data at the timing t36. At this time, before resetting, the software updating unit 57 once cuts off the power supply of the signal receiving device 1 and ends the software, and then when the power of the signal receiving device 1 is supplied next, Set so that the software is updated using the update data.

  Therefore, at the timing t <b> 36 when the power of the signal receiving device 1 is supplied from the power supply unit 25, the CPU 21 updates the software using the update data based on the setting of the software update unit 57.

  Then, at timing t37 when the software update is completed, the CPU 21 controls the power supply unit 25 so as to set the standby state, execute the updated software in the standby state, and a predetermined time has elapsed since the execution. At the timing t38, the power supply unit 25 is controlled to shift from the standby state to the normal state, and according to the normal state, power is supplied to each unit of the signal processing device 1 according to the normal state. As a result, the reception function of the signal reception device 1 is operated, and an image corresponding to the received broadcast signal is displayed on the display 12.

  As described above, the update start selection screen 101 is not displayed, that is, by not confirming the software update by the user, for example, as an exhibition signal receiving device installed in a store, Even when the user is not in front of the signal receiving device, it is effective because the software can be updated without bothering the user when AC power is turned on.

  Note that, as in the example of FIG. 7, the setting for preventing the update start selection screen 101 from being displayed can be set in advance by operating the remote controller or the like by the user.

  Next, update data acquisition processing of the signal reception device 1 will be described with reference to the flowchart of FIG.

  In the example of FIG. 8, the user is viewing the video of the desired broadcast content displayed on the display 12 of the signal receiving device 1. On the other hand, the broadcast station broadcasts a broadcast signal in which download notification information is multiplexed prior to transmission of update data.

  The program viewing front end unit 31-1 extracts a broadcast signal corresponding to the user's channel selection from the broadcast signal received via the antenna 11, demodulates it, generates a transport stream, and generates a descrambler. It outputs to 32-1. The descrambler 32-1 appropriately releases the scramble of the transport stream input from the front end unit 31-1, and outputs it to the demultiplexer 33-1. The demultiplexer 33-1 separates the multiplexed transport stream input from the descrambler 32-1 into a stream such as video or audio data or section data.

  The demultiplexer 33-1 outputs the separated video data and audio data to the MPEG decoder 34. The MPEG decoder 34 decodes the video data from the demultiplexer 33-1 and outputs it to the video signal processing unit 35. Also, the MPEG decoder 34 decodes the audio data from the demultiplexer 33-1 or 33-2 and outputs the audio signal processing unit. To 36. The video signal processing unit 35 adds (superimposes) data broadcast data or the like to the video data from the MPEG decoder 34, converts the data into an NTSC format signal, and displays the video on the display 12. The audio signal processing unit 36 causes the audio data from the MPEG decoder 34 to be output from the speaker 13.

  Thereby, the video of the program desired by the user is displayed on the display 12, and the sound of the program desired by the user is output from the speaker 13.

  On the other hand, the demultiplexer 33-1 supplies necessary section data among the separated section data to the notification information acquisition unit 51. In step S11, the notification information acquisition unit 51 expands the section data information from the demultiplexer 33-1 to the RAM 23, acquires download notification information from the information expanded in the RAM 23, and proceeds to step S12.

  In step S12, the notification information acquisition unit 51 confirms the download version of the acquired download notification information, and determines whether the acquired download notification information is information related to a newer version of software than the current software. If it is determined that the acquired download notification information is not information related to a newer version of software than the current software, the process returns to step S11 and the subsequent processing is repeated.

  That is, the notification information acquisition unit 51 determines that the acquired download notification information is unnecessary information in the signal receiving device 1, and waits for the next download notification information to be acquired.

  In step S <b> 12, when it is determined that the acquired download notification information is information related to a newer version of software than the current software, the notification information acquisition unit 51 is necessary information in the signal reception device 1. If there is, the process proceeds to step S13, where the acquired download notification information is stored in the nonvolatile memory 22, and the process proceeds to step S14.

  In step S <b> 14, the update data acquisition unit 52 performs a timing operation with the built-in clock and waits until the download start time of the download notification information stored in the nonvolatile memory 22 is reached. In the download notification information, since a plurality of dates and times when update data is broadcast is indicated, a download start time that is close in time among the dates and times that have not yet elapsed is used.

  In step S14, the update data acquisition unit 52 performs a time counting operation with the built-in clock and determines that the download start time has come. Then, the update data acquisition unit 52 proceeds to step S15, controls the channel selection unit 53, and updates the data acquisition front end. The unit 31-2 selects the download service so that the broadcast signal of the download service described in the download notification information is input, downloads the update data, proceeds to step S16, and demultiplexer 33-2 Update data is acquired from the section data separated by the above, and the process proceeds to step S17, where it is stored in the nonvolatile memory 22, and the update data acquisition process is terminated.

  The processing in steps S15 to S17 described above will be described in detail. At the date and time (download start time) of the update data broadcast, the update data is received from the broadcast station by a predetermined service (in this case, the user views it). The broadcast signal is multiplexed and transmitted. The update data may be encrypted, or error detection, error correction code, or the like may be added to prevent transmission errors.

  Since the front end unit 31-2 receives the broadcast signal from the broadcast station via the antenna 11, the channel selection unit 53 controls the front end unit 31-2 and uses the received broadcast signal to download notification information. Select the listed services. The front end unit 31-2 extracts a broadcast signal corresponding to the channel selection of the channel selection unit 53 from the broadcast signal received via the antenna 11, demodulates it, generates a transport stream, and generates a descrambler 32- Output to 2. The descrambler 32-2 appropriately de-scrambles the transport stream input from the front end unit 31-2 and outputs the descrambler 32-2 to the demultiplexer 33-2.

  The demultiplexer 33-2 separates the multiplexed transport stream into a stream such as video or audio data or section data, and the necessary data is separated from the separated section data according to an instruction from the update data acquisition unit 52. The update data file is supplied to the update data acquisition unit 52 from the DSM-CC section. The update data acquisition unit 52 temporarily stores the update data from the demultiplexer 33-2 in the nonvolatile memory 22.

  As described above, the update data is stored in the nonvolatile memory 22 while viewing the program of the service desired by the user, that is, while the display 12 is displaying.

  Next, software update processing of the signal reception device 1 will be described with reference to the flowchart of FIG.

  The user instructs to turn on a main power button (not shown) provided on the surface of the signal receiving device 1 in a state where a power plug (not shown) is inserted into an outlet in order to view broadcast content, or If the power plug (not shown) is disconnected from the outlet, insert the power plug (not shown) into the outlet. Correspondingly, since AC power is supplied to the power supply unit 25 via the power plug, the power supply unit 25 inputs the supplied AC power to the CPU 21.

  In step S31, the CPU 21 stands by until AC power is turned on. When AC power is supplied from the power supply unit 25, the CPU 21 proceeds to step S32, controls the power supply unit 25, and changes the power state to the normal state. The power is supplied to each unit of the signal processing device 1 according to the normal state, the software program stored in the nonvolatile memory 22 is executed, and the process proceeds to step S33. Thereby, the functional block shown in FIG. 4 is realized.

  The nonvolatile memory 22 stores information on the service that was viewed last time. In step S33, the channel selection unit 53 controls the program viewing front-end unit 31-1, selects a service stored in the nonvolatile memory 22, and a video corresponding to the broadcast content of the selected service. Is displayed on the display 12, and the process proceeds to step S34.

  That is, the front end unit 31-1 extracts a broadcast signal corresponding to the channel selection of the channel selection unit 53 from the broadcast signal received via the antenna 11, demodulates it, generates a transport stream, and generates a descrambler. It outputs to 32-1.

  The descrambler 32-1 appropriately releases the scramble of the transport stream input from the front end unit 31-1, and outputs it to the demultiplexer 33-1. The demultiplexer 33-1 separates the multiplexed transport stream input from the descrambler 32-1 into a stream such as video or audio data or section data.

  The demultiplexer 33-1 outputs the separated video data and audio data to the MPEG decoder 34. The MPEG decoder 34 decodes the video data from the demultiplexer 33-1 and outputs it to the video signal processing unit 35, and also decodes the audio data from the demultiplexer 33-1 and outputs it to the audio signal processing unit 36. . The video signal processing unit 35 adds (superimposes) data broadcast data or the like to the video data from the MPEG decoder 34, converts the data into an NTSC format signal, and displays the video on the display 12. The audio signal processing unit 36 causes the audio data from the MPEG decoder 34 to be output from the speaker 13. The video of the program desired by the user is displayed on the display 12, and the sound of the program desired by the user is output from the speaker 13.

  In step S <b> 34, the update data determination unit 61 determines whether update data necessary for software update (that is, version upgrade) is available in the nonvolatile memory 22, and updates the software in the nonvolatile memory 22. If it is determined that the necessary update data is available, the process proceeds to step S35.

  In step S35, the reservation information determination unit 62 determines whether or not the operation of the predetermined function is reserved in the nonvolatile memory 22 at a time close to the current time, and the time close to the current time in the nonvolatile memory 22 is determined. If it is determined that the operation of the predetermined function is not reserved, the process proceeds to step S36, the display control unit 55 is controlled, and the above-described update start selection screen 101 shown in FIG. Proceed to S37.

  That is, in step S36, the display control unit 55 supplies the data of the update start selection screen 101 to the video signal processing unit 35, controls the video signal processing unit 35, and causes the display 12 to display the update start selection screen 101. .

  For example, when the user is in front of the display 12, the user operates the remote controller while viewing the update selection start screen 101 displayed on the display 12, thereby giving a desired instruction to the signal reception device 1. input.

  When receiving a signal from the remote controller, the light receiving unit 24 supplies the signal to the instruction determination unit 56. The instruction determination unit 56 determines whether or not an update start instruction has been issued in step S37. For example, when the user operates the remote controller to select the start button 121 on the update selection start screen 101, the instruction determination unit 56 determines that an update start has been instructed, and proceeds to step S39, where the software update unit 57, the software update is started, and the software update process is terminated.

  If it is determined in step S37 that the update start is not instructed, the process proceeds to step S38, where the instruction determination unit 56 performs a time counting operation with the built-in clock and displays the update selection start screen 101. It is determined whether or not a predetermined time has passed without a predetermined operation by the user (for example, a stop instruction, a channel selection instruction, and a volume change instruction), and the predetermined time has passed without the user performing a predetermined operation. When it determines with having performed, it progresses to step S39, the software update part 57 is controlled, the update of a software is started, and a software update process is complete | finished.

  The processing in step S39 will be specifically described. When the software update unit 57 is instructed to start by the instruction determination unit 56, the software update unit 57 controls the power supply unit 25 to set the power supply state to the standby state. The software updating unit 57 is configured to update the software stored in the non-volatile memory 22 with the update data stored in the non-volatile memory 22 when AC power is supplied to the CPU 21 after reset. Is stored in the non-volatile memory 22 and then the power supply unit 25 is controlled to reset the power of the signal receiving device 1 once.

  The power supply unit 25 once cuts off the supply of AC power to the signal receiving device 1, then starts to supply AC power to the signal receiving device 1, and turns on the AC power to the CPU 21. The CPU 21 updates (rewrites) the software with the update data stored in the non-volatile memory 22 based on the setting of the software update unit 57 stored in the non-volatile memory 22, and supplies power when the update is completed. The unit 25 is controlled, the power supply state is set to the standby state, each unit of the signal processing device 1 is supplied with power according to the standby state, and the updated software is executed.

  In the above description, the case where the software reset is performed by shutting off the supply of AC power has been described. However, this is due to the specification, and the reset of the software is performed by shutting off the power supply. Not only, but it can be realized only by reset at the software level.

  As described above, since the software is executed in the standby state, the CPU 21 controls the power supply unit 25 after a predetermined time has elapsed after the execution of the software, and changes the power state from the standby state to the normal state. The power is supplied to each unit of the signal processing device 1 according to the normal state. Thereby, the video corresponding to the received broadcast signal is displayed on the display 12.

  On the other hand, for example, when the user operates the remote controller to select the cancel button 122 on the update selection start screen 101 or when an operation for viewing a program such as channel selection or volume operation is instructed. The instruction determination unit 56 determines that there has been an operation by the user, proceeds to step S40, and causes the display control unit 55 to end (prohibit) the display of the update start selection screen 101. That is, the display control unit 55 stops supplying the data of the update start selection screen 101 to the video signal processing unit 35 and ends the software update process.

  Thereby, only the video corresponding to the received broadcast signal is displayed on the display 12.

  In step S34, the update data determination unit 61 determines that the update data necessary for software update is not prepared in the nonvolatile memory 22, or in step S35, the reservation information determination unit 62 When it is determined that the operation of the predetermined function is reserved in the nonvolatile memory 22 at a time close to the current time, the software is not updated, and the software update process is ended.

  As described above, when the update data is in the nonvolatile memory after the power-on is detected, the update start selection screen is displayed, and the software update process is performed based on the user's update start instruction. Therefore, even for a user who cuts off the power supply of the signal receiving device 1 by turning off the power supply instead of turning off the remote control, the update-related screen is displayed immediately after the start of viewing and the software can be updated. In addition, since the screen related to the update is displayed immediately after the start of viewing, not during the viewing of the program, the user can start updating the software immediately depending on whether there is a program to be viewed. it can.

  Furthermore, at this time, the update start selection screen is displayed not only when the cancel button 122 is selected on the update start selection screen but also when an operation for viewing a program such as channel selection or volume operation is instructed. Since the software is not updated and the software is not updated, the trouble of pressing the cancel button 122 and erasing the update start selection screen can be saved.

  In addition, software update is started when a certain period of time has passed without any operation from the user while the update start selection screen is being displayed. Thus, even when the user is not in front of the signal receiving device, the software update is executed when the AC power is turned on. That is, software update can be performed without bothering the user.

  Further, in the signal receiving device 1, in addition to the software updating method of the present invention, the conventional software updating method described with reference to FIG. 1 or FIG. Thus, it is possible to deal with both users who finish viewing on the signal receiving device 1.

  In the above description, the case where software update is started when a certain period of time has passed without any operation from the user while the update start selection screen is displayed. When a certain period of time has passed without any user operation while the screen is displayed, the software may be controlled not to be updated. Further, while the update start selection screen is being displayed, A method for dealing with a case where a certain time has passed without any operation may be set by the user.

  In the above description, the signal receiving device 1 includes two tuner blocks so that the update data stored in the nonvolatile memory 22 is acquired while the user is watching the program. The user can acquire update data from a server connected to a network (not shown) via the I / F 27, or can be acquired from a predetermined recording medium 29 distributed by the manufacturer by other methods. Can be obtained during viewing of a program, it can also be applied to a signal receiving apparatus having one tuner block.

  Further, in the above description, the signal receiving device 1 incorporating the display 12 has been described. However, a receiving device connected to an external television device may be used, or a set top box or the like may be configured. It may be. In the above description, the signal receiver 1 of a fixed receiver has been described. However, the present invention can also be provided to mobile receivers and portable receivers such as PDAs (Personal Digital Assistants) and mobile phones. .

  The series of processes described above can be executed by hardware, but can also be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program storage medium in a general-purpose personal computer or the like.

  As shown in FIG. 3, a program storage medium that stores a program that is installed in a computer and can be executed by the computer includes a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Disc-Read). Recording media (package media) 29 such as only memory), DVD (digital versatile disc), magneto-optical disc (including MD (mini-disc) (trademark)), or semiconductor memory, or programs temporarily And a nonvolatile memory 22 and a RAM 23 that are stored in a permanent or permanent manner.

  In the present specification, the steps shown in the flowcharts include not only processes performed in time series according to the described order, but also processes executed in parallel or individually even if not necessarily performed in time series. Is included.

It is a figure explaining the example of the timing of the update process of the conventional software. It is a figure explaining the other example of the timing of the update process of the conventional software. It is a block diagram which shows the structural example of the signal receiver of this invention. It is a block diagram which shows the function structural example of the signal receiver of FIG. It is a figure explaining the example of the timing of the update process of the software of this invention. It is a figure which shows the structural example of an update start selection screen. FIG. 5 is a diagram for explaining another example of the timing of the software update process in FIG. 4. 4 is a flowchart for explaining update data acquisition processing of the signal reception device of FIG. 3. It is a flowchart explaining the software update process of the signal receiver of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Signal receiver, 12 Display, 21 CPU, 22 Non-volatile memory, 24 Light-receiving part, 25 Power supply part, 31-1, 31-2 Front end part, 32-1, 32-2 Descrambler, 33-1, 33-2 Demultiplexer, 51 Notification information acquisition unit, 52 Update data acquisition unit, 53 Channel selection unit, 54 Data determination unit, 55 Display control unit, 56 Instruction determination unit, 57 Software update unit, 61 Update data determination unit, 62 Reservation Information judgment part

Claims (9)

In a signal receiving device that receives a broadcast signal,
Data determination means for determining whether or not update data for updating its own software is stored in the nonvolatile memory when the AC power supply is detected;
A display for controlling display of a selection screen for allowing the user to select whether or not to update the own software when the data determination unit determines that the update data is stored in the nonvolatile memory. Control means;
When an instruction to update the own software is input by a user operation while the selection screen is displayed, the software is updated using the update data stored in the nonvolatile memory. And a signal receiving device. The display control means prohibits the display of the selection screen when an instruction other than the update of its own software is input by a user operation while the selection screen is displayed. A signal receiving apparatus according to claim 1. A time determination means for determining whether or not a state in which a predetermined instruction by a user's operation is not input during the selection screen continues for a predetermined time;
Even when it is determined that a state in which a predetermined instruction by a user operation is not input by the time determination unit has continued for a predetermined time, the update unit uses the update data stored in the nonvolatile memory. The signal receiving apparatus according to claim 1, wherein the self-software is updated. Reservation determination means for determining whether or not an operation of a predetermined function is reserved at a time close to the current time when the data determination means determines that the update data is stored in the nonvolatile memory. In addition,
The display control unit prohibits display of the selection screen when the reservation determining unit determines that the operation of a predetermined function is reserved at a time close to the current time. A signal receiving apparatus according to claim 1. The selection screen whose display is controlled by the display control means when the AC power supply is detected and the data judgment means judges that the update data is stored in the nonvolatile memory The signal receiving apparatus according to claim 1, wherein display or non-display of can be set in advance. First signal receiving means for receiving a broadcast signal of the first channel;
Second signal reception for receiving a broadcast signal of the second channel other than the first channel or the first channel when a broadcast signal for normal viewing is received by the first signal receiving means. Means,
2. The signal reception according to claim 1, further comprising: a data acquisition unit that acquires the update data from the second broadcast signal received by the second signal reception unit and stores the update data in the nonvolatile memory. apparatus. In a signal receiving method for receiving a broadcast signal,
A data determination step for determining whether or not update data for updating its own software is stored in the nonvolatile memory when the AC power supply is detected;
Controls display of a selection screen for allowing the user to select whether or not to update the own software when it is determined that the update data is stored in the nonvolatile memory by the processing of the data determination step Display control step to
When an instruction to update the own software is input by a user operation while the selection screen is displayed, the software is updated using the update data stored in the nonvolatile memory. A signal receiving method comprising: an updating step. A recording medium on which a program for causing a computer to perform a process of receiving a broadcast signal is recorded,
A data determination step for determining whether or not update data for updating its own software is stored in the nonvolatile memory when the AC power supply is detected;
Controls display of a selection screen for allowing the user to select whether or not to update the own software when it is determined that the update data is stored in the nonvolatile memory by the processing of the data determination step Display control step to
When an instruction to update the own software is input by a user operation while the selection screen is displayed, the software is updated using the update data stored in the nonvolatile memory. A recording medium on which a program is recorded, comprising: an update step. A program for causing a computer to perform a process of receiving a broadcast signal,
A data determination step for determining whether or not update data for updating its own software is stored in the nonvolatile memory when the AC power supply is detected;
Controls display of a selection screen for allowing the user to select whether or not to update the own software when it is determined that the update data is stored in the nonvolatile memory by the processing of the data determination step Display control step to
When an instruction to update the own software is input by a user operation while the selection screen is displayed, the software is updated using the update data stored in the nonvolatile memory. A program characterized by comprising an update step.

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