JP4813084B2 - Communication system, radio communication terminal and method thereof - Google Patents

Description

  The present invention relates to a radio communication terminal with a digital broadcast receiving function capable of receiving digital broadcasting, for example, terrestrial digital broadcasting or satellite digital broadcasting, and a method thereof.

In recent years, a cellular phone device having a function capable of receiving a television broadcast is known (for example, see Patent Document 1).
In terrestrial digital broadcasting or satellite digital broadcasting, digital broadcasting using a transmission band of 1 or 3 segments is scheduled mainly for a receiver having high portability.

In such digital broadcasting, bug fixes in the receiver software, software updates to improve software functions to support new broadcasting services, etc., common data (operator logo, genre code table, frequency list)・ Downloads of change information etc. are transmitted on broadcast waves.
The receiver receives, for example, a software download trigger table (SDTT) which is download notification information transmitted when receiving a digital broadcast wave, and is included in the information. Manufacturer information (maker_id), corresponding model information (model_id), version to be updated (target_version), new version sent (new_version), download level that identifies forced download or optional download (download_level) ), The version instruction (version_indicator), etc., determine whether the downloaded data is valid for the receiver, and determine whether to perform the download process based on the setting conditions of the receiver.

  The receiver that is determined to execute the download receives the download data included in the broadcast wave transmitted at the set date and time within the specified transmission schedule, and updates the software in the receiver and updates the common data To do.

  The download notification information, for example, software download trigger table (SDTT), has its transmission interval determined by the broadcast type, and is sent at intervals of several minutes to several tens of minutes only when it is necessary to send SDTT. Is done.

  In the case of a highly portable receiver, due to its characteristics, the receiver is turned off at the time of sending download notification information, for example, the software download trigger table (SDTT) or the download data sending period. Receivers may be located underground or indoors where broadcast waves do not reach, located outside the country where services do not reach, or so-called `` out of service area ''. Download for update is not always executed.

In preparation for such a case, it is attempted that a fixed receiver receives download data instead of a portable receiver and transfers the downloaded data to a portable receiver later (for example, patents). Reference 2).
Japanese Patent Laid-Open No. 2002-9920 JP 2003-37787 A

  As described above, the transmission interval of the download notification information included in the broadcast wave, for example, the software download trigger table (SDTT) is several minutes to several tens of minutes. Therefore, if the SDTT can be received within the viewing time of the user. It is good, but when the receiver of a portable receiver, for example, a mobile phone device with a digital broadcast reception function is not in use or the digital broadcast viewing function is not used, the digital broadcast tuner is turned on for a day to receive the SDTT. At least once, the power must be turned on continuously for several minutes to several tens of minutes, and it is unsuitable for power saving as a mobile phone device with a digital broadcast receiving function. There is a problem of consumption.

  As described above, the download function of the digital broadcast in the mobile phone device with the digital broadcast receiving function is that the mobile phone device with the digital broadcast reception function is installed in an environment where the digital broadcast wave can be reliably received due to its portability. Since it is not known whether or not there is a user who has, there is no guarantee that the download function will be executed reliably.

In the case of a method in which a fixed receiver downloads instead of a mobile phone device with a digital broadcast reception function, a fixed receiver corresponding to the method is required, and for users who have only a mobile phone device with a digital broadcast reception function Is not an alternative.
In addition, in the case of broadcast media intended only for portable digital broadcast receivers, it cannot be handled because it cannot be received by a fixed receiver.

A communication system according to the present invention includes a server comprising computer means for transmitting information related to software update notification to a wireless communication terminal that receives a digital broadcast using a message service; Means for receiving the software update notification from the digital broadcast according to the broadcast schedule included in the notification information when software update is required based on the information. And a wireless communication terminal provided .

When the wireless communication terminal of the present invention receives software update notification information related to digital broadcasting through a message service and requires software update based on the information, the wireless communication terminal performs digital broadcasting according to the broadcast schedule included in the notification information. It is characterized by comprising means for performing a process of receiving software from.
In addition, the wireless communication terminal of the present invention receives software update notification information related to digital broadcasting through a message service, and performs processing for updating the software when software update is necessary based on the information. First server and predetermined server information stored in the terminal when the time of receiving the software update notification information by the message service has passed the distribution period included in the software update notification information And a second means for obtaining software related to the update by accessing the server based on the above.
Furthermore, the wireless communication terminal of the present invention receives software update notification information related to digital broadcasting by a message service, and performs processing for updating the software when software update is necessary based on the information. When the time when the software update notification information by the first means and the message service is received has passed the distribution period included in the software update notification information, based on the access information of the server in the message, And a second means for acquiring software related to the update.
Preferably, when the software needs to be updated, there is provided means for notifying the distribution timing of the updated software included in the message.

According to the method of the present invention, a server transmits information on software update notification to a wireless communication terminal that receives a digital broadcast by using a message service of a wireless telephone company, and the server uses the message service to update software. The wireless communication terminal that has received the information related to the notification performs processing for receiving the software from the digital broadcast according to the broadcast schedule included in the information related to the notification when it is determined that the software needs to be updated based on the information. Features.
In addition, the method of the present invention can be used when a wireless communication terminal receives software update notification information related to digital broadcasting through a message service and needs to update software based on the information. Processing for updating the software that receives software from digital broadcasting according to a schedule is performed.
Furthermore, the method of the present invention provides a method for updating software when the wireless communication terminal receives software update notification information related to digital broadcasting through a message service and requires software update based on the information. When the processing and the time when the software update notification information by the message service is received has passed the distribution period included in the software update notification information, the wireless communication terminal , based on predetermined server information, It is characterized by acquiring software related to update.
The method of the present invention also provides a method for updating software when the wireless communication terminal receives software update notification information related to digital broadcasting through a message service and requires software update based on the information. In a case where the time when the software update notification information is received by the message service has passed the delivery period included in the software update notification information, the wireless communication terminal is based on the server information in the message. And obtaining software related to the update.
Preferably, when the software needs to be updated, the wireless communication terminal notifies the user of the distribution time of the updated software included in the message.

  In the wireless communication terminal with a digital broadcast receiving function according to the present invention, for some reason, the reception of download notification information transmitted in the digital broadcast, for example, the software download trigger table (SDTT) or the reception of download data is missed. Even if it is lost, the same information can be reliably obtained by the short message service. As a result, it is possible to reliably update software and common data in a wireless communication terminal with a digital broadcast receiving function.

  Furthermore, according to the present invention, since the user does not need to continuously receive digital broadcast waves every day for several minutes to several tens of minutes in order to receive download notification information, for example, SDTT, It becomes possible to suppress the consumption of the battery used for the wireless communication terminal with a function.

Hereinafter, as an embodiment of a wireless communication terminal with a digital broadcast receiving function according to the present invention, a mobile phone device with a digital broadcast receiving function will be exemplified and described with reference to the drawings.
FIG. 1 is a configuration diagram of a mobile phone device with a digital broadcast receiving function as an embodiment of a mobile terminal device with a digital broadcast receiving function according to the present invention.
FIG. 2 is an external view of the mobile phone device with a digital broadcast receiving function shown in FIG.
FIG. 3 is an overall configuration diagram of a communication system to which the mobile phone device with a digital broadcast receiving function shown in FIGS. 1 and 2 is applied.

With reference to FIG. 1 and FIG. 2, the configuration of a mobile phone device 100 with a digital broadcast receiving function according to an embodiment of the present invention will be described.
The mobile phone device 100 with a digital broadcast receiving function according to the embodiment of the present invention has a function of a mobile phone device and a function of a digital broadcast receiver.
First, the configuration of the mobile phone device 100 with a digital broadcast receiving function corresponding to the mobile phone device will be described. The mobile phone device 100 with a digital broadcast receiving function includes a portion shared with the digital broadcast receiver.
The mobile phone device 100 with a digital broadcast receiving function includes a control unit 112 that controls the entire mobile phone device 100 with a digital broadcast receiving function, an operation unit 115 that has a key and the like, and a user operates the mobile phone device. A wireless communication unit 114 that transmits and receives wireless signals to and from a base station (not shown) to connect to a telephone network (wireless telephone carrier) network, a transmission / reception antenna 113 for the wireless communication unit 114, various liquid crystal devices, organic In the display unit 109 including an EL display, the microphone 111 for making a call, the speaker 110 for reproducing sound, the non-volatile memory 117 for storing programs and data operating in the control unit 112, and the control unit 112 The program was run or temporary data processed by the control unit 112 was retained A volatile memory 116 for, assumed to have the configuration and operation processing content that satisfies the function of a portable telephone device.

  This mobile phone device can be used as a normal mobile phone device, and also used as a means for receiving a message including download notification information such as a software download trigger table (SDTT), which will be described later. . Details thereof will be described later.

Next, the configuration of the mobile phone device 100 with a digital broadcast receiving function corresponding to the digital broadcast receiver will be described. Of course, the mobile phone device 100 with a digital broadcast receiving function includes a portion shared by the above-described mobile phone device and the digital broadcast receiver.
In order to receive and play back a digital broadcast, the mobile phone device 100 with a digital broadcast reception function includes a receiving antenna 101 for digital broadcast, a tuner unit 102 for selecting a channel of the received digital broadcast (channel selection), and channel selection. The demodulator 103 for demodulating the digital broadcast wave, the descrambler 104 for decrypting the encrypted digital broadcast content of the limited reception system that can receive only a specific receiver, and the descrambler 104 A TS separation unit 105 that separates digital broadcast content into a video signal, an audio signal, a data signal, etc., input as a transport stream (TS), an audio signal decoding unit 106 for decoding the received audio signal, and a received video signal The video signal decoding unit 107 for decoding the received data signal in the display unit 109 Comprising a data signal processing unit 108 for processing to the display format.

The control unit 112 is realized by, for example, a CPU of an arithmetic device such as a microcomputer, and controls processing of the above-described mobile phone device and processing of the digital broadcast receiver. The program that operates in the control unit 112 includes a program and data to be updated using download notification information (SDTT) such as a software download trigger table (SDTT) in addition to the basic part stored in the nonvolatile memory 117. Is recorded in the volatile memory 116.
That is, updating of programs and data based on a software download trigger table (SDTT), which will be described later, is performed on what is recorded in the volatile memory 116.

The processing of the digital broadcast receiver will be described.
The digital broadcast is transmitted from, for example, a broadcast tower 201, a broadcast satellite 202, etc. as shown in FIG.
In cellular phone device 100 with a digital broadcast receiving function of the present embodiment, antenna 101 receives a digital broadcast wave, and tuner unit 102 selects a desired channel. The channel desired by the user is input from the operation unit 115 to the tuner unit 102 via the control unit 112.
When the tuner unit 102 selects a channel desired by the user, the demodulator 103 demodulates the received digital broadcast wave into a transport stream (TS). When the demodulated transport stream (TS) is scrambled, the descrambler 104 performs descrambling. If the demodulated transport stream (TS) is not scrambled, it is needless to say that descrambling 104 does not need to be descrambled.

  The transport stream (TS) signal thus obtained is separated into video signal, audio signal, and data signal packets by the TS separation unit 105, and each separated packet may be a video signal packet. For example, the video signal decoding unit 107 decodes the video signal and displays it on the display unit 109. If it is an audio signal packet, it is decoded by the audio signal decoding unit 106 and reproduced by the speaker 110. If it is a data signal packet, its content is analyzed by the data signal processing unit 108. If the content of the data packet is related to the broadcast service, the data signal processing unit 108 displays the data packet as a display unit 109. The data is decoded so that it can be displayed / reproduced, and is displayed or displayed on the display unit 109.

  Data packets can be broadly classified into two types in the case of digital broadcasts, which are related to broadcast services, and in the case of functional services such as data distribution and download for software update of a receiver.

  Hereinafter, with reference to the flowchart of FIG. 4, processing in the mobile phone device 100 with the digital broadcast receiving function when the user is listening to the digital broadcast using the mobile phone device 100 with the digital broadcast receiving function will be described.

Steps 1 and 2 : If the signal is related to the broadcast service, as described above, the signal corresponding to the audio signal decoding unit 106, the video signal decoding unit 107, and the data signal processing unit 108 is transmitted from the TS separation unit 105. Then, the above-described processing is performed.
On the other hand, in the case of a function service data packet, the data packet is sent from the TS separator 105 to the controller 112 instead of the data signal processor 108 described above.

Step 3: A software download trigger table that is an example of software update download notification information of the control unit 112 when a digital broadcast wave is being viewed by a user using the mobile phone device 100 with a digital broadcast reception function. When (SDTT) is included and received, the TS separation unit 105 notifies the control unit 112 that it is a functional service.

Step 4: The control unit 112 includes, in the SDTT, whether or not the mobile phone device 100 with the digital broadcast reception function of the present embodiment is subject to software update for the received software download trigger table (SDTT). For example, manufacturer and model information: table_id_ext (maker_id, model_id), target version information: version_indicator, version of content to be updated: target_version, content version to be downloaded: new_version, etc. Performs the process of step 5. On the other hand, when mobile phone device 100 with a digital broadcast receiving function according to the present embodiment is not subject to software update, control unit 112 performs no special processing.

Step 5: When the mobile phone device 100 with the digital broadcast receiving function of the present embodiment is a target for software update, the control unit 112 distributes the content included in the software download trigger table (SDTT). For example, transport stream identification: transport_stream_id, information for determining whether forced or optional: download_level, download delivery time: start_time, delivery duration: duration, download content descriptor: descriptor, etc. Or using the display means 109 to notify the user of software updates.

  When the download execution is reserved, the control unit 112 automatically executes the download when the specified date and time is reached based on the content distribution information illustrated in the software download trigger table (SDTT). A means for performing display and operation on the display unit 109 for permitting the user to execute download is provided.

With reference to FIG. 5, a case where the user has not received a digital broadcast using the mobile phone device 100 with a digital broadcast receiving function will be described.
When the user has not received the digital broadcast using the mobile phone device 100 with the digital broadcast reception function, the software download trigger table (SDTT) by the digital broadcast wave cannot be received. The SDTT is transmitted from the broadcasting tower 201, the broadcasting satellite 202, etc. for at least one day or more, but there is no certainty that the user will receive a digital broadcast once every day for several minutes or more.
Therefore, as shown in FIG. 3, apart from the digital broadcast wave transmitted from the broadcast tower 201, the broadcast satellite 202, etc., the contents of the SDTT are transferred from the SMS server 204 to the cellular phone network (wireless) using the message service of the wireless telephone carrier. A short message is transmitted to the mobile phone device 100 with a digital broadcast receiving function via the telephone carrier network 203 and the wireless base station 206. That is, since the mobile phone device 100 with a digital broadcast receiving function also has the function of the mobile phone device, the short message is received using the function.
The reception of the short message is received by the transmission / reception antenna 113 of the part of the cellular phone device and input to the control unit 112 via the wireless communication unit 114.

Step 11: When the short message received by the transmission / reception antenna 113 is a software download trigger table (SDTT) which is download notification information, the control unit 112 is equivalent to the case where the above-described SDTT is received by a digital broadcast wave. Perform the operation.

Steps 12 and 13: Of the content distribution information included in the SDTT received by the short message, the download data transmission period calculated from the download distribution time (start_time) and distribution duration (duration) is already in the past (short) When the message is received (time has already passed), the control unit 112 stores the data download server 207 stored in the volatile memory 116 in the mobile phone device 100 with a digital broadcast reception function. It is possible to access the server information (URL) via a communication network (including the Internet network, for example), and download (acquire) past updates to update software and data tables.

Steps 14 and 15: When the content distribution information included in the SDTT received by the short message is already in the past, and the URL (Uniform Resource Locator) of the data download server 207 is specified in the short message. The control unit 112 can access the URL of the data download server 207 received by the short message via the Internet network, download past updates, and update the software and the data table.

Thus, the control unit 112 functions as various means exemplified below.
(1) If the short message including the content of the software update notification information includes the URL information of the data download server and the distribution period has expired, the URL is accessed, and the communication network (2) If the content of the received software update notification information has passed the distribution period, a predetermined information stored in the portable terminal device is stored. Means for accessing URL and updating software using communication network (3) When software update of the mobile terminal device is required according to the content of the software update notification information received by the short message service , The content of the download time etc. to the user (4) Means for confirming software update information at a timing desired by the user (5) Short message service In accordance with the content of the received software update notification information, if software update of the mobile terminal device is required, the software is automatically received according to the broadcast schedule included in the notification information (automatically when the specified date and time comes) To download)

As an example, FIG. 6 shows the content of an SDTT short message not including the URL of the data download server, and FIG. 7 shows the content of the short message when the URL is included.
Whether the software download trigger table (SDTT) information can be stored with the data capacity (number of bytes) that can be transmitted with the short message information defined by the mobile phone device depends on the number of types of update items, etc. . For this reason, the case where all the SDTT information cannot be stored in the volatile memory 116, for example, in the data capacity that can be transmitted by one short message may be considered. In such a case, instead of transmitting one SDTT with one short message, as shown in the example of FIG. 8, by adding continuation information in the short message, a single software message is transmitted with a plurality of short messages. The contents of download trigger table (SDTT) information (SDTT) are transmitted.
The control unit 112 also functions as means for performing the above processing.

Further, when many short messages are required to transmit one software download trigger table (SDTT), it is not preferable from the viewpoint of network efficiency, and it is not preferable in the short message for transmitting SDTT. In addition, at least whether or not the mobile phone device 100 with a digital broadcast receiving function according to the present embodiment is a target of software update, can be determined SDTT information, for example, manufacturer and model information: table_id_ext (maker_id, model_id), A short message including target version information: version_indicator, version of content to be updated: target_version, content version to be downloaded: new_version, and the URL information of the SDTT server 208 having all SDTT information. For example, when it is determined from the SDTT information that the mobile phone device with a digital broadcast receiving function 100 according to the present embodiment is a target for software update, the SDTT server 208 stores the SDTT information to be continued. The above operation is performed by downloading the URL after accessing the URL via the Internet. The message may not include the URL of the data download server, and the server may be accessed based on server information (such as the server URL) stored in a predetermined memory.
The control unit 112 also functions as means for performing the above processing.

  In FIG. 3, for the sake of convenience, the SDTT server 208 and the download server 207 are separate servers. However, if the same server is sufficient, they can be the same server.

  As described above, the mobile phone device 100 with a digital broadcast receiving function according to the embodiment of the present invention downloads software download trigger table (SDTT) information and the like transmitted by digital broadcast due to some cause as described above. Even if you miss the receipt of notification information or download data, you can use the functions of the mobile phone device to reliably obtain the same or nearly the same information as that received by digital broadcasting as a short message. In addition, it is possible to reliably update software of the control unit 112 and update common data.

  In addition, by performing the above-described processing, it is not necessary to continuously receive digital broadcast waves every few minutes to several tens of minutes for receiving download notification information such as SDTT. It is not necessary to activate the digital broadcast tuner of the attached mobile phone device 100, and battery consumption can be suppressed.

In the above embodiment, the mobile phone device is exemplified as the wireless communication terminal. However, the mobile phone device is not limited to the mobile phone device as long as it can receive the above-described short message and other messages. Various mobile terminal devices such as a car navigation system having a reception function can be applied. The present invention is not limited to the short message described above, but may be other message services, and includes a communication service having the same effect.
As described above, the wireless communication terminal with a digital broadcast receiving function of the present invention includes a digital broadcast receiver and a mobile terminal device capable of receiving a message.

FIG. 1 is a configuration diagram of a mobile phone device with a digital broadcast receiving function according to an embodiment of the present invention. FIG. 2 is an external view of the mobile phone device with a digital broadcast receiving function shown in FIG. FIG. 3 is a diagram showing an overall configuration of digital broadcasting to which the mobile phone device with a digital broadcasting receiving function shown in FIG. 1 is applied. FIG. 4 is a flowchart showing a part of the processing of the mobile phone device with a digital broadcast receiving function shown in FIG. FIG. 5 is a flowchart showing a part of processing of the mobile phone device with a digital broadcast receiving function shown in FIG. FIG. 6 is an example of the contents of a short message of the software download trigger table (SDTT) that does not include the URL of the data download server. FIG. 7 shows an example of the content of the short message when the URL of the data download server is included. FIG. 8 shows an example of the contents when the continuation information is provided in the short message when all the SDTT information cannot be stored in the data capacity that can be transmitted in one short message. FIG. 9 is a diagram showing a configuration example of a short message including URL information of an SDTT server having all SDTT information.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Reception antenna, 102 ... Tuner part, 103 ... Demodulation part, 104 ... Descrambler, 105 ... TS separation part, 106 ... Audio signal decoding part, 107 ... Video signal decoding part, 108 ... Data signal processing part 108, 109 ... Display unit 110 ... Speaker 111 ... Microphone 112 ... Control unit 113 ... Antenna 114 ... Wireless communication unit 115 ... Operation unit 116 ... Volatile memory 117 ... Non-volatile memory 201 ... Broadcast tower 202 ... Broadcast Satellite, 203 ... mobile phone network, 204 ... SMS server, 205 ... mobile phone device, 206 ... wireless base station, 207 ... data download server, 208 ... SDTT server

Claims (10)

A server comprising means configured by a computer that transmits information about software update notification to a wireless communication terminal that receives digital broadcasting using a message service;
When the message service receives information related to the software update notification from the server, and if software update is necessary based on the information, the software receives the software from the digital broadcast according to the broadcast schedule included in the information related to the notification. A wireless communication terminal comprising means for performing processing to perform,
A communication system comprising: When software update notification information related to digital broadcasting is received by the message service, and software update is required based on the information, processing for receiving software from the digital broadcast is performed according to the broadcast schedule included in the notification information. With means,
A wireless communication terminal characterized by the above. Software update notification information related to digital broadcasting is received by the message service, and when software update is necessary based on the information, first means for performing processing for software update ;
When the timing of receiving the software update notification information by the message service has passed the distribution period included in the software update notification information, the server updates the server based on predetermined server information stored in the terminal. A second means of accessing and obtaining software relating to the update;
Wireless communication terminal comprising: a. Software update notification information related to digital broadcasting is received by the message service, and when software update is necessary based on the information, first means for performing processing for software update ;
When the timing of receiving the software update notification information by the message service has passed the distribution period included in the software update notification information, the software related to the update is acquired based on the server access information in the message. With second means
Wireless communication terminal comprising: a. When the software needs to be updated, it comprises means for notifying the distribution timing of the updated software included in the message ,
The wireless communication terminal according to claim 2. Information about software update notification is transmitted to a wireless communication terminal that receives digital broadcasting by using a message service of a wireless telephone carrier, and information about software update notification is received from the server by the message service. When the wireless communication terminal determines that software update is necessary based on the information, the wireless communication terminal performs a process of receiving software from the digital broadcast according to a broadcast schedule included in the information related to the notification.
A method characterized by that. When a wireless communication terminal receives software update notification information related to digital broadcasting through a message service and requires software update based on the information, the software is downloaded from the digital broadcast according to the broadcast schedule included in the notification information. Performs processing for updating the received software,
A method characterized by that. When the wireless communication terminal receives software update notification information related to digital broadcasting through the message service and needs to update the software based on the information, the wireless communication terminal performs processing for the software update,
When the timing of receiving the software update notification information by the message service has passed the distribution period included in the software update notification information, the wireless communication terminal updates the software related to the update based on predetermined server information. get,
A method characterized by that. When the wireless communication terminal receives software update notification information related to digital broadcasting through the message service and needs to update the software based on the information, the wireless communication terminal performs processing for the software update,
When the time when the software update notification information is received by the message service has passed the distribution period included in the software update notification information, the wireless communication terminal relates to the update based on the server information in the message. Get the software,
A method characterized by that. When the software update is necessary, the wireless communication terminal notifies the user of the update software distribution time included in the message,
8. The method of claim 7, wherein:

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