JP2010011115A - Broadcast receiving apparatus - Google Patents

Abstract

A broadcast receiving apparatus capable of displaying advertisements browsed by a user in the past as a history is provided.
SOLUTION: Total audience rating time calculation means 1802 calculates the total program viewing time for each attribute value to which the program belongs, so that the first type of advertisement selection means is based on the total viewing time total value for each attribute. By selecting the advertisement data corresponding to the attribute and storing the history of the selected advertisement data by the first type advertisement history storage means, the advertisement data displayed in the past by the first type advertisement display means is displayed.
[Selection] Figure 1

Description

  The present invention relates to a broadcast receiving apparatus that receives a digital broadcast and is capable of executing an application by installing middleware. Specifically, the present invention relates to a broadcast receiving apparatus that implements a service for displaying advertisements to viewers.

  With the spread of digital broadcasting, various services are realized on broadcast receiving terminals. For example, there is a service in which a variety of content is multiplexed on a broadcast wave transmitted from a broadcast station, and the content is displayed on a broadcast receiving terminal that has received the broadcast wave. Content may include data such as text and bitmaps and application programs in addition to video and audio used in normal programs. The broadcast receiving terminal that has received the broadcast wave extracts the application program from the broadcast wave and executes it on the terminal.

  The application program has various functions. For example, texts and bitmaps multiplexed on the broadcast wave are extracted and displayed on the screen. Broadcast receiving terminals having such functions often incorporate an application execution environment called middleware.

  As an example, there is a BML browser that executes an application program described in the BML format in Japan.

  As another example, there is a presentation engine type middleware that executes an application program written in the Java (registered trademark) language. For example, in Europe, DVB-MHP (Digital Video Broadcasting-Multimedia Home Platform) ETSI ES 201 812 V1.1.1 (2003-12) specification is standardized and operated. In the United States, an OCAP (Open Cable Application Platform) OC-SP-OCAP1.0-I14-050119 specification that provides a similar mechanism in a cable broadcasting environment has been formulated and is actually scheduled to start operation.

  In these specifications, an application program is described in the Java (registered trademark) language, compiled, and multiplexed on a broadcast wave in a binary format. When the terminal receives the broadcast wave, the terminal extracts and executes a binary-format application program. Various APIs (application programming interfaces) for tuning and graphics display are prepared on the terminal, and a Java (registered trademark) application program can control these functions by calling the API.

  The Java (registered trademark) language is a highly flexible language, and various operations can be programmed as an application program. As an example of such an operation, a function of displaying an advertisement on a screen using a graphics display function can be considered. For example, in recent years, services for displaying advertisements linked to information search results have become widespread in Internet information search services, but services similar to those services can also be realized.

  Search engine sites are examples of services that display advertisements on the Internet. This is a service that, when a keyword is entered, a list of links to websites containing the keyword is displayed. In this service, when a search keyword is input, an advertisement related to the keyword is displayed. Since viewers see advertisements related to keywords that they are interested in, there is an advantage that the advertising effect is high.

For example, Patent Document 1 discloses a modification of such an advertisement display service for a search engine site. This is an advertisement display service applied to a service called a portal site that collects links to websites. First, a plurality of sponsor advertisement banners are displayed on the portal site. When the user clicks on one of the banners, a bingo paper appears on the user's screen, and a single number is virtually read out. Then, a bingo box that matches the number opens, and the logo of the participating sponsor that the user accessed at that moment is displayed on the box. Also, if the same participating sponsor logo is lined up in a line where a bingo is formed, it is possible to give a better prize.
JP 2002-83203 A (page 3-4, paragraph 0021)

  In the search site, when the search result is displayed, an advertisement related to the search keyword is also displayed. However, the displayed advertisement is for the current search keyword, and advertisements displayed in the past cannot be browsed again. Even if the search is repeatedly performed with the same keyword, there is no guarantee that the advertisement displayed in the past will be displayed in the next search. For this reason, even if the user is interested in advertisements displayed in the past, it is difficult to view again when he / she wants to see them, so that he / she loses his / her interest and thus lowers the advertising effect.

  Further, in Patent Document 1, the logo of the participating sponsor is that of the sponsor of the website accessed at that time, and there is a problem that the advertisement is selected and displayed depending on the temporary behavior of the user.

  In addition, these services are services using an Internet website, and are not realized by a broadcast receiving terminal.

  The present invention solves the above-described conventional problems, and by displaying the history of advertisements browsed by the user in the past, it is possible to easily browse advertisements that have been interested in the past, and for the user's past viewing for a certain period of time. It is an object of the present invention to provide a broadcast receiving apparatus that enables an advertisement display service in which an advertisement is selected based on a history so that a user's essential hobby preference is reflected in the advertisement selection display.

  In order to solve the above-described conventional problem, in the broadcast receiving apparatus of the present invention, the program attribute value correspondence storage unit stores the association between the program and the attribute value, and the program weight value storage unit uses the program and the total viewing time calculation. The association of weight values is stored, and the total viewing time calculation means calculates the total viewing time of each attribute which is the sum of the product of the viewing time of the program corresponding to each attribute value and the weight set for that program. The first type advertisement selection means selects one first type advertisement associated with the attribute with a higher probability as the total viewing time of each attribute is longer, and the first type advertisement history storage means The history of the advertisement selected by one type of advertisement selection means is stored, and the first type of advertisement display means displays the advertisement stored in the first type of advertisement history storage means based on the history. With this configuration, when an advertisement related to a program that the user has watched for a long time is displayed, the advertisement displayed in the past is displayed again as a history.

  The advertisement history condition establishment determining means determines whether or not the history of the first type advertisement stored in the first type advertisement history storage means satisfies a certain condition, and the second type advertisement selection means determines the advertisement history condition When the establishment determining means determines that the history of the first type advertisement satisfies a certain condition, the second type advertisement different from the first type advertisement is newly selected, and the second type advertisement display means The second type advertisement selected by the second type advertisement selecting means is displayed. With this configuration, when an advertisement related to a program that the user has watched for a long time is displayed, another advertisement is additionally displayed when an advertisement displayed in the past satisfies a specific condition.

  Further, the second type of advertisement selecting means is the first type of advertisement satisfying the predetermined condition when the advertisement history condition establishment determining means determines that the history of the first type of advertisement satisfies the predetermined condition. A second type of advertisement is newly selected from the second type of advertisement associated with the attribute value associated with. With this configuration, when an advertisement related to a program that the user has watched for a long time is displayed, another advertisement related to the advertisement related to the program is further displayed when the advertisement displayed in the past satisfies a specific condition. The

  Further, the first type advertisement history condition establishment determining means determines a certain condition that the history of the first type advertisement should satisfy by a ratio of past total viewing time of each attribute value. With this configuration, since a certain condition that should be satisfied by the advertisement history is an advertisement related to a program that the user has watched for a long time, the condition is easily established, and another advertisement that is displayed based on the established condition Can also be related to programs that the user has watched for a long time.

  According to the broadcast receiving apparatus of the present invention, it is possible to repeatedly display an advertisement related to a field where a user's program viewing time is long and to display an effective advertisement in accordance with the user's interest.

  In addition, the advertisement related to the long program viewing time of the user can be repeatedly displayed, and when the condition is satisfied, another advertisement can be additionally displayed. Therefore, an effective advertisement display according to the user's interest can be performed. can do.

  In addition, an advertisement related to a field in which the user's program viewing time is long is repeatedly displayed, and if the condition is satisfied, another advertisement regarding a field in which the user's program viewing time is long can be additionally displayed. It is possible to display an effective advertisement along the line.

  In addition, since the condition that should be satisfied by the history of advertisement related to the field where the user's program viewing time is long depends on the field where the user's program viewing time is long, it is possible to display an advertisement effectively according to the user's interest.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
Hereinafter, an apparatus and a method according to a first embodiment of the present invention will be described with reference to the drawings. The present invention is intended for recording and playback of content transmitted and received on an arbitrary medium. In the present embodiment, an embodiment in a cable television broadcasting system will be described as an example. In a cable television broadcasting system, the broadcast recording / reproducing apparatus of the present invention is generally called a terminal device.

  FIG. 16 is a block diagram showing the relationship of the devices constituting the broadcast system, and is composed of a broadcast station side system 1601, three terminal devices A 1611, a terminal device B 1612, and a terminal device C 1613. The coupling 1621 between the broadcasting station system and each terminal device is a wired coupling using a coaxial cable or an optical fiber in the cable system. In FIG. 16, although three terminal devices are combined with one broadcasting station side system, the number of terminal devices is arbitrary.

  The broadcast station side system 1601 transmits information such as video / audio / data for data broadcasting included in a broadcast signal to a plurality of terminal devices. The broadcast signal is transmitted using a frequency within a frequency band determined by a broadcast system operation default or a law of a country / region where the broadcast system is operated.

  In the cable system of the present embodiment, the frequency band used for broadcast signal transmission is divided and assigned for each data content and transmission direction (upstream and downstream).

  FIG. 2 is a table showing an example of frequency band division. Frequency bands are roughly classified into two types, Out Of Band (abbreviated as OOB) and In-Band. 5 to 130 MHz is allocated to the OOB, and is mainly used for the exchange of upper and lower bidirectional data between the broadcasting station side system 1601 and the terminal device A 1611, the terminal device B 1612, and the terminal device C 1613. 130 MHz to 864 MHz is allocated to In-Band, and is mainly used for a downlink-only broadcast channel including video / audio. QPSK modulation is used for OOB, and QAM64 or QAM256 modulation is used for In-Band. The modulation technique is a well-known technique that is not very related to the present invention, and thus detailed description thereof is omitted.

  FIG. 3 is an example of a more detailed use of the OOB frequency band. 70 MHz to 74 MHz are used for downlink data transmission from the broadcast station side system 1601, and all the terminal devices A 1611, terminal devices B 1612, and terminal devices C 1613 receive equal data from the broadcast station side system 1601. On the other hand, 10.0 MHz to 10.1 MHz is used for uplink data transmission from the terminal device A 1611 to the broadcast station side system 1601, and 10.1 MHz to 10.2 MHz is uplink data transmission from the terminal device B 1612 to the broadcast station side system 1601. 10.2 MHz to 10.3 MHz is used for uplink data transmission from the terminal device C 1613 to the broadcasting station side system 1601. As a result, data specific to each terminal device can be independently transmitted from each terminal device A 1611, terminal device B 1612, and terminal device C 1613 to the broadcasting station side system 1601.

  FIG. 4 is an example of use for the In-Band frequency band. 150-156 MHz and 156-162 MHz are assigned to TV channel 1 and TV channel 2, respectively, and thereafter, TV channels are assigned at intervals of 6 MHz. After 310 MHz, radio channels are allocated in 1 MHz units. Each of these channels may be used as an analog broadcast or a digital broadcast. In the case of digital broadcasting, it is transmitted in a TS packet format based on the MPEG2 specification, and in addition to audio and video, various data broadcasting data and program organization information for configuring EPG can be transmitted.

  The broadcast station side system 1601 has a QPSK modulation unit, a QAM modulation unit, and the like in order to transmit an appropriate broadcast signal to the terminal device using the frequency band described above. In addition, a QPSK demodulator is provided to receive data from the terminal device. The broadcast station side system 1601 is considered to have various devices related to the modulation unit and the demodulation unit. However, since the present invention mainly relates to the terminal device, detailed description thereof is omitted.

  On the other hand, the terminal device A 1611, the terminal device B 1612, and the terminal device C 1613 have a QAM demodulator and a QPSK demodulator in order to receive and reproduce the broadcast signal from the broadcast station side system 1601. In addition, a QPSK modulation unit is provided to transmit data specific to each terminal device to the broadcast station side system 1601. In the present invention, the terminal device is a broadcast recording / playback device, and its detailed configuration will be described later.

  The broadcast station side system 1601 modulates the MPEG2 transport stream and transmits it in a broadcast signal. The terminal device receives the broadcast signal, demodulates it, reproduces the MPEG2 transport stream, extracts necessary information from it, and uses it. In order to explain the function of the device existing in the terminal device and the configuration of the connection, first, the configuration of the MPEG2 transport stream will be briefly described.

  FIG. 5 is a diagram showing the structure of a TS packet. The TS packet 500 has a length of 188 bytes and includes a header 501, an adaptation field 502, and a payload 503. The header 501 holds TS packet control information. It has a length of 4 bytes and a configuration represented by 504. This field has a field described as “Packet ID (hereinafter referred to as PID)”, and the TS packet is identified by the value of this PID. The adaptation field 502 holds additional information such as time information. The presence of the adaptation field 502 is not essential and may not exist. The payload 503 holds information transmitted by the TS packet, such as video / audio and data for data broadcasting.

  FIG. 6 is a schematic diagram of an MPEG2 transport stream. The TS packet holds various information such as video, audio and data for data broadcasting in its payload. TS packet 601 and TS packet 603 hold PID 100 in the header, and hold information related to video 1 in the payload. TS packet 602 and TS packet 605 hold PID 200 in the header, and hold information related to data 1 in the payload. The TS packet 604 holds the PID 300 in the header and holds information related to the audio 1 in the payload. Mixing TS packets holding various types of data in the payload in this way and sending them as a series of sequences is called multiplexing. The MPEG2 transport stream 600 is an example of a configuration in which TS packets 601 to 605 are multiplexed.

  TS packets having the same PID hold the same type of information. Therefore, the terminal device can reproduce the video / audio or the data such as the program scheduling information by receiving the multiplexed TS packet and extracting the information held in each TS packet for each PID. . In FIG. 6, TS packet 601 and TS packet 603 both transmit information relating to video 1, and TS packet 602 and TS packet 605 both transmit information relating to data 1.

  Here, the format of various data included in the payload will be described.

  The video and audio are expressed in a format called a PES (Packetized Elementary Stream) packet. The PES packet includes video information or audio information in a certain time zone, and the broadcast recording / playback apparatus can output the video / audio information included in the PES packet to the screen / speaker by receiving the PES packet. When the broadcasting station transmits the PES packet without interruption, the broadcast recording / reproducing apparatus can continue to reproduce the video / audio without interruption. When the PES packet is actually transmitted, if it has a size larger than the payload of one TS packet, it is divided and stored in the payloads of a plurality of TS packets.

  FIG. 7 shows an example of division when transmitting a PES packet. Since the PES packet 701 is large to be stored and transmitted in the payload in one TS packet, it is divided into a PES packet division A 702a, a PES packet division B 702b, and a PES packet division C 702c, and three TS packets 703 having the same PID. 705 is transmitted. Actually, video and audio are obtained as elementary streams (ES) obtained by combining data included in the payloads of a plurality of PES packets. This elementary stream is in the form of digitized video and audio defined by the MPEG2 Video standard and the MPEG1 and Audio2 standards.

  On the other hand, information such as program organization information and data for data broadcasting is expressed using a format called MPEG2 section. When the MPEG2 section is actually transmitted, if it has a size larger than the payload of one TS packet, it is divided and stored in the payloads of a plurality of TS packets.

  FIG. 8 shows an example of division when the MPEG2 section is transmitted. Since the MPEG2 section 801 is large to be stored and transmitted in the payload in one TS packet, it is divided into section division A 802a, section division B 802b, and section division C 802c, and transmitted by three TS packets 803 to 805 having the same PID. Is done.

  FIG. 9 represents the structure of the MPEG2 section. The MPEG2 section 900 is composed of a header 901 and a payload 902. The header 901 holds MPEG2 section control information. Its configuration is represented by a header configuration 903. The payload 902 holds data transmitted by the MPEG2 section 900. The table_id existing in the header structure 903 represents the type of the MPEG2 section, and the table_id_extension is an extension identifier used to distinguish between MPEG2 sections having the same table_id.

  As an example of use of the MPEG2 section, FIG. 10 shows a case where program organization information is transmitted. In this example, as described in the row 1004, information necessary for demodulating the broadcast signal is described in the MPEG2 section whose table_id is 64 in the header structure 903, and the MPEG2 section is assigned 16 as the PID. It is transmitted by TS packet.

  For MPEG2 sections, there is no PES format. Therefore, an elementary stream (ES) is obtained by combining the payloads of TS packets identified by the same PID in the MPEG2 transport stream. For example, in FIG. 8, TS packets 803 to 805 that are transmitted by dividing the MPEG2 section 801 are all identified with a PID of 200. It can be said that this is an ES transmitting the MPEG2 section 801.

  The concept of a program further exists in the MPEG2 transport stream. A program is expressed as a set of ESs, and is used when a plurality of ESs are to be handled together. By using the program, it becomes possible to handle video / audio and data broadcasting data accompanying it together. For example, when video / audio to be played back at the same time are handled together, it is understood that the broadcast recording / playback apparatus should play back these two ESs as one program at the same time by combining the video ES and the audio ES as programs. .

  In order to express a program, MPEG2 uses two tables called PMT (Program Map Table) and PAT (Program Association Table). Refer to the ISO / IEC 13818-1, “MPEG2 Systems” specification for a detailed description. Hereinafter, PMT and PAT will be briefly described.

  The PMT is a table included in the MPEG2 transport stream by the number of programs. The PMT is configured as an MPEG2 section, and table_id is 2. The PMT holds a program number used for program identification, additional information about the program, and information related to the ES belonging to the program.

  An example of PMT is given in FIG. 1100 is a program number. The program number is uniquely assigned to a program within the same transport stream, and is used for PMT identification. Lines 1111 to 1115 represent information on individual ESs. A column 1101 is an ES type, and “video”, “audio”, “data”, and the like are designated. A column 1102 is a PID of TS packets constituting the ES. A column 1103 is additional information regarding the ES. For example, the ES represented in the row 1111 is a voice ES and is transmitted by a TS packet having a PID of 5011.

  PAT is a table that exists only once in the MPEG2 transport stream. The PAT is configured as an MPEG2 section, table_id is 0, and is transmitted by a TS packet having a PID of 0. The PAT holds transport_stream_id used to identify the MPEG2 transport stream and information on all PMTs representing programs existing in the MPEG2 transport stream.

  An example of PAT is given in FIG. 1200 is transport_stream_id. transport_stream_id is used to identify the MPEG2 transport stream. Lines 1211 to 1213 express information related to the program. A column 1201 is a program number. A column 1202 is a PID of a TS packet that transmits a PMT corresponding to the program. For example, the PMT of the program shown in the row 1211 has a program number of 101, and the corresponding PMT is transmitted by a TS packet having a PID of 501.

  When a terminal device reproduces a certain program, the PAT and PMT are used to identify the video / audio constituting the program and reproduce them. For example, with respect to the MPEG2 transport stream that transmits the PAT of FIG. 12 and the PMT of FIG. 11, the following procedure is used when playing back video / audio belonging to a program whose program number is 101. First, a PAT transmitted as an MPEG2 section whose table_id is “0” is acquired from a TS packet whose PID is “0”. A program whose program number is “101” is searched from PAT, and a row 1211 is obtained. From the row 1211, the PID “501” of the TS packet that transmits the PMT of the program whose program number is “101” is obtained. Next, a PMT transmitted as an MPEG2 section with a table_id “2” is acquired from a TS packet with a PID “501”. From the PMT, a row 1111 which is audio ES information and a row 1112 which is video ES information are obtained. From the row 1111, the PID “5011” of the TS packet that transmits the voice ES is obtained. Further, from the row 1112, the PID “5012” of the TS packet for transmitting the video ES is obtained. Next, an audio PES packet is obtained from the TS packet with PID “5011”, and a video PES packet is obtained from the TS packet with PID “5012”. This makes it possible to acquire video / audio ES packets to be reproduced, and to reproduce the video and audio constituting the program number 101.

  Note that the MPEG2 transport stream may be encrypted. This is a mechanism called limited viewing. For example, by performing an encryption process on a PES packet that transmits certain video / audio information, only a specific viewer who can decrypt the encryption can view. In order to decrypt the code and view the video and audio, the viewer performs descrambling using a device called a descrambler. For example, an OCAP terminal device uses a card-type adapter with a built-in descrambler. The operator of the cable television distributes an adapter set so that a specific program can be decoded for each viewer, and the viewer inserts the adapter into the terminal device. Then, the adapter releases the encryption for the specific program based on the descrambling information such as the descrambling key and the contract information of each contractor. The method of descrambling and the method of obtaining the descrambling key depend on the adapter and do not affect the realization of the present invention.

  Up to this point, a brief description of the MPEG2 specification has been given, but here the words are defined in detail. There are two types of word “program” in the context of the present invention. One is a “program” appearing in the MPEG2 specification, and the other is a “program” in the sense of a set of codes executed by the CPU. Since the former is synonymous with the word “service” used in the operation rules, in order to avoid confusion, the former is hereinafter referred to as “service” and the latter is simply referred to as “program”. Further, regarding the latter, a “program” written in the Java (registered trademark) language is called a “Java (registered trademark) program”.

  In the above, some general information related to the present invention determined by the MPEG2 specification has been described. Hereinafter, the broadcast receiving apparatus used in the present embodiment will be described in detail.

  FIG. 13 is a block diagram showing a general hardware configuration of the broadcast receiving apparatus according to the present embodiment, that is, a specific internal configuration of terminal apparatuses 1611, 1612, and 1613 in FIG. Reference numeral 1300 denotes a broadcast receiving apparatus, which includes a tuner 1301, a TS decoder (TS Demultiplexer) 1302, an AV decoder 1303, a speaker 1304, a display 1305, a CPU 1306, a secondary storage unit 1307, a primary storage unit 1308, a ROM 1309, an input unit 1310, and an adapter. 1311. This embodiment is obtained by extending a broadcast receiving terminal realized by the OCAP specification, and the basic hardware configuration is almost the same as that required by the OCAP specification.

  The tuner 1301 is a device that demodulates a modulated broadcast signal transmitted from the broadcast station system 1601 in accordance with tuning information such as a frequency specified by the CPU 1306. The tuner 1301 includes a QAM demodulator 1301a for demodulating an In-band signal, a QPSK demodulator 1301b for demodulating an Out-of-band signal, and a QPSK modulator 1301c for modulating. The MPEG2 transport stream obtained as a result of demodulating the In-band signal by the QAM demodulator 1301a of the tuner 1301 is transferred to the TS decoder 1302 via the adapter 1311 having a descrambling function.

  The TS decoder 1302 is a device having a function of selecting a PES packet or an MPEG2 section that matches a designated condition from the MPEG2 transport stream based on designation of a PID designated by the CPU 1306, a section filter condition, or the like. This sorting function is called packet filtering. Two types of filter devices, a PID filter and a section filter, are built in the TS decoder. Details of filtering will be described later. An MPEG2 transport stream input to the TS decoder is an MPEG2 transport stream output from the adapter 1311.

  The video and audio PES packets selected by the TS decoder 1302 are output to the AV decoder 1303. The MPEG2 section selected by the TS decoder 1302 is transferred to the primary storage unit 1308 by DMA (Direct Memory Access) and used by a program executed by the CPU 1306.

  The AV decoder 1303 is a device having a function of decoding the encoded video ES and audio ES. The AV decoder extracts the ES from the PES packet that transmits the audio and video information transferred from the TS decoder and decodes it. The audio signal and video signal obtained by decoding by the AV decoder 1303 are output to the speaker 1304 and the display 1305 for service reproduction.

  The speaker 1304 reproduces the sound output from the AV decoder 1303.

  The display 1305 reproduces the video output from the AV decoder 1303.

  The CPU 1306 executes a program that operates on the broadcast recording / playback apparatus. The CPU 1306 executes a program built in the ROM 1309. Alternatively, a program downloaded from a broadcast signal or network and stored in the primary storage unit 1308 is also executed. Alternatively, a program downloaded from a broadcast signal or a network and stored in the secondary storage unit 1307 is also executed. The tuner 1301, TS decoder 1302, AV decoder 1303, speaker 1304, display 1305, secondary storage unit 1307, primary storage unit 1308, ROM 1309, input unit 1310, and adapter 1311 are controlled in accordance with instructions of the program to be executed. Further, the CPU 1306 can control not only the devices existing in the terminal device 1300 but also devices in the adapter 1311 to control the adapter 1311.

  The secondary storage unit 1307 is a storage device whose memory is not erased even when the power of the device is cut off. For example, non-volatile memory such as FLASH-ROM, HDD (Hard Disk Drive), rewritable media such as CD-R and DVD-R, etc. are configured by devices whose information is not erased when the terminal device 1300 is powered off. The information is stored in accordance with an instruction from the CPU 1306.

  The primary storage unit 1308 is a device having a function of temporarily storing information in accordance with an instruction from the CPU 1306 or a device capable of DMA transfer, and includes a RAM or the like.

  The ROM 1309 is a non-rewritable memory device, and specifically includes a ROM, a CD-ROM, a DVD, and the like. The ROM 1309 stores a program executed by the CPU 1306.

  Specifically, the input unit 1310 includes a front panel and a remote control receiver, and receives input from the user. FIG. 14 shows an example in which the input unit 1310 is configured with a front panel. The front panel 1400 includes seven buttons, an up cursor button 1401, a down cursor button 1402, a left cursor button 1403, a right cursor button 1404, an OK button 1405, a cancel button 1406, an EPG button 1407, and a mode switching button 1408. When the user presses the button, the CPU 1306 is notified of the identifier of the pressed button.

  The adapter 1311 is a device for canceling encryption applied to the MPEG2 transport stream transmitted in the In-band frequency band, and is equipped with one or more descramblers. The adapter 1311 receives the MPEG2 transport stream output from the tuner 1301a, and decrypts the TS packet having the PID designated by the CPU 1306. The adapter 1311 outputs the decrypted MPEG2 transport stream to the TS decoder 1302.

  Furthermore, the adapter 1311 also performs format conversion of data transmitted in the OOB frequency band. Information transmitted by OOB is modulated by the QPSK modulation method. Regarding the downlink transmission, the QPSK demodulator 1301 b demodulates the downlink signal transmitted from the broadcast station side system 101 and inputs the generated bit stream to the adapter 1311. The adapter 1311 extracts information specified by the CPU 1306 from various information included in the bitstream, converts the information into a format interpretable by a program operating on the CPU 1306, and provides the CPU 1306 with the information. On the other hand, for upstream transmission, the CPU 1306 inputs information to be transmitted to the broadcast station side system 101 to the adapter 1311. The adapter 1311 converts the information input from the CPU 1306 into a format that can be interpreted by the broadcasting station system 101 and inputs the information to the QPSK modulator 1301c. The QPSK modulator 1301 c performs QPSK modulation on the information input from the adapter 1311 and transmits it to the broadcast station side system 101.

  Specific examples of the adapter 1311 include CableCARD and the old name POD (Point Of Deployment) used in the US cable system.

  An operation in which the broadcast receiving apparatus described above receives a broadcast wave and reproduces a service included in the broadcast wave will be described in detail below.

  FIG. 15 is a conceptual diagram expressing the physical connection order, processing contents, and input / output data format of each device. A terminal device 1500 includes a tuner 1301, an adapter 1311, a descrambler 1501, a TS decoder 1302, a PID filter 1502, a section filter 1503, an AV decoder 1303, and a primary storage unit 1308. 15 that have the same reference numerals as those in FIG. 13 have the same functions as those shown in FIG.

  First, the tuner 1301 tunes the broadcast wave according to the tuning instruction designated by the CPU 1306. The tuner 1301 demodulates the broadcast wave and inputs the MPEG2 transport stream to the adapter 1311.

  The descrambler 1501 in the adapter 1311 performs descrambling of the MPEG2 transport stream based on the restriction release information for each viewer. The decrypted MPEG2 transport stream is input to the TS decoder.

  Within the TS decoder 1302, there are two types of devices that perform processing on the MPEG2 transport stream, a PID filter 1502 and a section filter 1503.

  The PID filter 1502 extracts a TS packet having a PID designated by the CPU 1306 from the input MPEG2 transport stream, and further extracts a PES packet and an MPEG2 section existing in the payload. For example, if the CPU 1306 instructs PID filtering to extract a TS packet with PID = 100, and the MPEG2 transport stream of FIG. 6 is input, the packets 601 and 603 are extracted and further connected, and the PES packet of video 1 Is reconstructed. Alternatively, if the MPEG1 transport stream of FIG. 6 is input when the CPU 1306 instructs PID filtering to extract a TS packet with PID = 200, the packets 602 and 605 are extracted and further concatenated, and the MPEG2 section of the data 1 Is reconstructed.

  The section filter 1503 extracts an MPEG2 section that matches a section filter condition designated by the CPU 1306 from the input MPEG2 section, and DMA-transfers it to the primary storage unit 1308. As the section filter condition, a PID value and a table_id value can be specified as an auxiliary condition. For example, it is assumed that the CPU 1306 designates the section filter 1503 for PID filtering for extracting a TS packet with PID = 200 and section filtering for extracting a section whose table_id is 64. As described above, after the MPEG2 section of the data 1 is reconstructed, the section filter 1503 extracts only the section whose table_id is 64 from the MPEG2 section and stores it in the primary storage unit 1308 which is a buffer. Forward.

  The MPEG2 section input to the primary storage unit 1308 is interpreted by software executed by the CPU 1306, and various operations are performed according to the interpretation result. Since the specific operation depends on the software, it will be described in the description of the software configuration.

  The video (video) PES packet and audio (audio) PES packet extracted by the TS decoder 1302 are input to the AV decoder 1303.

  The AV decoder decodes the video PES packet, converts it into a video (video) signal, and inputs the video signal to the display 1305. Thereby, a video is reproduced on the display. The audio PES packet is decoded and converted into an audio (audio) signal and input to the speaker 1304. As a result, sound is reproduced by the speaker.

  Up to this point, the hardware configuration example related to the present invention has been described, but hereinafter, a method for realizing an advertisement display service by the Java (registered trademark) program, which is the main function of the present invention, will be described.

  FIG. 17 is a block diagram of a program required for service reproduction, and is software stored in the ROM 1309.

  The program 1700 includes an OS 1701, EPG 1702, Java (registered trademark) VM 1703, and Java (registered trademark) library 1704 which are subprograms.

  The OS 1701 is an operating system, such as Linux and Windows (registered trademark). The OS 1701 includes a kernel 1701 a for executing other subprograms such as EPG 1702 and Java (registered trademark) VM 1703, and a library 1701 b used by the subprogram to control the components of the terminal device 1300. The kernel 1701a is a well-known technique and will not be described in detail.

  The library 1701b provides a tuning function for controlling a tuner, for example. The library 1701b receives tuning information including a frequency from another subprogram and passes it to the tuner 1301. The tuner 1301 can perform demodulation processing based on the given tuning information, and can deliver the demodulated MPEG2 transport stream to the TS decoder 1302. As a result, other subprograms can control the tuner 1301 through the library 1701b.

  The library 1701b provides channel information for uniquely identifying a channel. An example of the channel information is shown in FIG. The channel information is transmitted using the OOB or In-band frequency band, converted into a table format by the adapter 1311, and stored in a temporary storage unit accessible by the library. The column 2001 is a channel identifier, and corresponds to, for example, source_ID defined by SCTE 65 Service Information Delivered Out-Of-Band For Digital Cable Television. A column 2002 is a channel name, and corresponds to source_name in the SCTE 65 standard. A column 2003 is tuning information, which is information given to the tuner 1301 such as frequency, transfer rate, and modulation method. A column 2004 is a program number for designating the PMT. For example, a row 2011 is a set of service information with a channel identifier “1”, a channel name “channel 1”, tuning information with a frequency “150 MHz,...”, And a program number “101”.

  In addition, the library 1701b can set control parameters for the hardware components shown in FIG. Each function will be described later.

  The Java (registered trademark) VM 1703 is a Java (registered trademark) virtual machine that sequentially analyzes and executes a program written in the Java (registered trademark) language. A program written in the Java (registered trademark) language is compiled into an intermediate code called a bytecode that does not depend on hardware. The Java (registered trademark) virtual machine is an interpreter that executes this bytecode. The Java (registered trademark) VM 1703 executes a Java (registered trademark) library 1704 written in the Java (registered trademark) language. For details on the Java (registered trademark) language and the Java (registered trademark) VM, please refer to the books “Java (registered trademark) Language Specification (ISBN 0-201-63451-1)” and “Java (registered trademark) Virtual Machine Specification (IS) 0 -201-63451-X) "and the like. Further, through JNI (Java (registered trademark) Native Interface), it is possible to call or be called another subprogram that is not described in the Java (registered trademark) language. For JNI, refer to the book “Java (registered trademark) Native Interface” and the like.

  The Java (registered trademark) library 1704 is a library described in the Java (registered trademark) language that the Java (registered trademark) program calls to control the function of the broadcast recording / playback apparatus. However, subprograms written in a non-Java (registered trademark) language such as the library 1701b of the OS 1701 may be used as necessary. The Java (registered trademark) program can use the functions provided by the Java (registered trademark) library 1704 by calling the Java (registered trademark) API (application programming interface) that the Java (registered trademark) library 1704 has.

  A Tuner 1704c is a Java (registered trademark) library for controlling an in-band receiving tuner 1301a of a broadcast recording / playback terminal. When the Java (registered trademark) program passes tuning information including the frequency to the Tuner 1704c, the Tuner 1704c uses it to call the tuner function of the library 1701b, and as a result, the operation of the In-band receiving tuner 1301a of the broadcast recording / playback terminal is performed. Can be controlled.

  The SF 1704e is a Java (registered trademark) library for controlling the functions of the PID filter 1502 and the section filter 1503 of the broadcast recording / playback terminal. When the Java (registered trademark) program passes filter conditions such as PID and table_id to the SF 1704e, the SF 1704e sets the filtering conditions in the PID filter 1502 and the section filter 1503 using the functions of the library 1701b based on the conditions and controls them. Then, an MPEG2 section satisfying the desired filter condition is acquired and passed to the Java (registered trademark) program in which the filter condition is set.

  The DSM-CC 1704d is a Java (registered trademark) library for accessing the file system of the DSM-CC object carousel. The DSM-CC object carousel includes an MPEG2 section acquired by the SF 1704e. DSM-CC is defined in the ISO / IEC13818-6 standard and is a mechanism for transmitting an arbitrary file using the MPEG2 section. By using this, a file can be transmitted from the broadcasting station to the terminal. The DSM-CC 1704d acquires the MPEG2 section using the SF 1704e based on the DSMCC identifier and file identifier specified by the Java (registered trademark) program, and extracts the file based on the ISO / IEC13818-6 standard. The data is output to the primary storage unit 1308 and the secondary storage unit 1307. Since a detailed method for realizing DSM-CC is not related to the present invention, a description thereof will be omitted.

  The AM 1704b is an application manager that provides a function for managing execution and termination of the Java (registered trademark) program included in the service. The AM 1704b extracts the Java (registered trademark) program multiplexed on the designated channel of the designated MPEG2 transport stream, and executes the extracted Java (registered trademark) program according to the separately multiplexed synchronization information, or Or exit. The Java (registered trademark) class file of the Java (registered trademark) program is multiplexed on the MPEG2 transport stream by the DSM-CC method described above. The synchronization information of the Java (registered trademark) program is multiplexed in the MPEG2 transport stream in a format called AIT. AIT is an abbreviation of Application Information Table defined in Chapter 10 of the DVB-MHP standard (ETSI TS 101 812 DVB-MHP specification V1.0.2), and is an MPEG2 section whose table_id is “0x74”. . In the description of the present embodiment, the AIT defined in the DVB-MHP standard is used with modification.

  The internal configuration of the AM 1704b is shown in FIG. The AM 1704b includes an AIT monitoring unit 2402 and an application state management unit 2401.

  The AIT monitoring unit 2402 receives the private section in the MPEG2 transport stream output from the TS decoder 1302 and stored in the primary storage unit 1308 at the time of reproduction of the service, and the channel identifier, and monitors the update status of the AIT. First, the AIT monitoring unit 2402 searches the channel information in the library 1701b using the designated channel identifier as a key, and obtains the program number of the service. Next, the PAT is acquired from the MPEG2 transport stream using SF1704e or the like. Further, the PMT PID corresponding to the previously obtained program number is obtained from the PMT information. The actual PMT is acquired using the SF 1704e again. The acquired PMT has the format shown in FIG. 11, and the PID of the elementary stream having the stream type “data” and “AIT” as supplementary information is written. Further, when the PIT of the AIT obtained now and table_id “0x74” are given to the SF 1704e as filtering conditions, the entity of the AIT is obtained.

  FIG. 22 is a table schematically showing an example of AIT information. The AIT version number 2200 represents the version of the AIT. The larger the AIT version, the newer the AIT. An AIT having the same AIT version is repeatedly received, but the AIT monitoring unit 2402 ignores an AIT having an AIT version equal to the already acquired AIT without acquiring it, and acquires only an AIT that is newer than the already acquired AIT. The AIT monitoring unit 2402 outputs the acquired new AIT to the application state management unit 2401. A column 2201 is an identifier of a Java (registered trademark) program. According to the MHP standard, this identifier is defined as an Application ID. A column 2202 is control information of the Java (registered trademark) program. The control information includes “autostart”, “present”, “kill”, etc. “autostart” means that the terminal device 1300 automatically executes this Java (registered trademark) program immediately, and “present” is automatic. “Kill” means to stop the Java (registered trademark) program. A column 2203 is a DSM-CC identifier for extracting a PID including a Java (registered trademark) program in the DSM-CC method. A column 2204 is a program name of the Java (registered trademark) program. A column 2205 is service_bound_flag. When the value is 1, it means that the Java (registered trademark) program is always terminated when another service is selected. In the case of 0, when another Java service is selected and the Java (registered trademark) program is also described in the AIT of the service, the Java (registered trademark) program continues without being terminated. Means to be executed. Lines 2211, 2212, 2213, and 2214 are information sets of Java (registered trademark) programs. The Java (registered trademark) program defined in the line 2211 is a set of the identifier (0x3221) of the Java (registered trademark) program, the control information “autostart”, the DSMCC identifier “1”, and the program name “a / TopXlet”. Similarly, the Java (registered trademark) program defined in the row 2212 is a set of a Java (registered trademark) program identifier “0x3222”, control information “present”, a DSMCC identifier “1”, and a program name “b / GameXlet”. It is. Here, the three Java (registered trademark) programs defined in the line 2211, the line 2212, and the line 2214 have the same DSMCC identifier. However, this means that three Java (in a file system encoded in one DSMCC format) (Registered trademark) program is included. Here, only four pieces of information are defined for the Java (registered trademark) program, but more information is actually defined. For details, refer to the DVB-MHP standard.

  The application state management unit 2401 analyzes the content of the updated AIT output from the AIT monitoring unit 2402, and manages the execution state of the Java (registered trademark) program based on the content of the AIT.

  First, the application state management unit 2401 finds a Java (registered trademark) program whose control information is “autostart” from the AIT, and extracts a corresponding DSMCC identifier and Java (registered trademark) program name. Referring to FIG. 22, AM 1704b extracts the Java (registered trademark) program on line 2211 and obtains the DSMCC identifier “1” and the Java (registered trademark) program name “a / TopXlet”. Next, the application state management unit 2401 accesses the DSMCC 1704d using the DSMCC identifier acquired from the AIT, and makes it possible to retrieve the Java (registered trademark) program file stored in the DSMCC file system. The file is recorded in the primary storage unit 1308 or the secondary storage unit 1307. The extraction of data such as the file system from the TS packet in the MPEG2 transport stream and saving it in the storage means such as the primary storage unit 1308 and the secondary storage unit 1307 is hereinafter referred to as download.

  FIG. 23 is an example of a downloaded file system. In the drawing, a circle represents a directory, a square represents a file, 2301 represents a root directory, 2302 represents a directory “a”, 2303 represents a directory “b”, 2304 represents a file “TopXlet.class”, 2305 represents a file “GameXlet.class”, Reference numeral 2306 denotes a directory “z”, reference numeral 2307 denotes a file “MusicXlet.class”, and reference numeral 2308 denotes a file “StudyXlet.class”.

  Next, the application state management unit 2401 delivers a Java (registered trademark) program to be executed from the file system downloaded to the primary storage unit 1308 to the Java (registered trademark) VM 1703. Here, if the name of the Java (registered trademark) program to be executed is “a / TopXlet”, the file “a / TopXlet.class” with “.class” added to the end of the Java (registered trademark) program name should be executed. It becomes a file. “/” Is a delimiter between directories and file names, and is a Java (registered trademark) program to be executed by the file 2304 with reference to FIG. The file is executed as a Java (registered trademark) program on the Java (registered trademark) VM.

  Whenever an AIT having a new AIT version is output from the AIT monitoring unit 2402, the application state management unit 2401 analyzes the AIT and changes the execution state of a new Java (registered trademark) program.

  The JMF 1704a is responsible for playback control of video and audio included in the service. Specifically, at the time of service reproduction, a specific video ES and audio ES are input to the AV decoder from the MPEG2 transport stream output from the TS decoder.

  The JMF 1704a receives a channel identifier to be reproduced. First, the JMF 1704a searches the channel information in the library 1701b using the designated channel identifier as a key, and obtains a program number. Next, the PAT is acquired from the MPEG2 transport stream using SF1704e or the like. Further, the PMT PID corresponding to the previously obtained program number is obtained from the PMT information. The actual PMT is acquired using the SF 1704e again. The acquired PMT has the format shown in FIG. 11, and the PIDs of elementary streams whose stream types are “video” and “audio” are written. When the JMF 1704a sets those PIDs in the PID filter 1502 of the TS decoder 13212 through the library 1701b, the AV decoder 1303 decodes the video ES and audio ES multiplexed by the corresponding PID as shown in FIG. 15 or FIG. Is done. The decoded audio and video are reproduced via the speaker 1304 and the display 1305.

  The service manager 1704f manages the reproduction of services in the MPEG2 transport stream input from the adapter 1311, that is, the reproduction of broadcast waves. Hereinafter, a method for managing reproduction of services in the MPEG2 transport stream input from the adapter 1311 will be described.

  The service manager 1704f receives the channel identifier of the reproduction target service. The service manager 1704f instructs through the library 1701b to output the MPEG2 transport stream output from the adapter 1311 in FIG. 13 to the TS decoder 1302. Further, the output destination of each hardware component is set to flow along the path shown in FIG. 15 through the library 1701b. Thereafter, a channel identifier to be reproduced in the MPEG2 transport stream input from the adapter 1311 is given to the JMF 1704a. Then, the JMF 1704a starts reproduction of video and audio multiplexed on the MPEG2 transport stream output from the adapter 1311 by the operation described above. Further, the service manager 1704f gives a channel identifier to be reproduced in the MPEG2 transport stream output from the adapter 1311 to the AIT monitoring unit 2402 of the AM 1704b. Then, the AM 1704b starts executing and terminating the Java (registered trademark) program multiplexed in the MPEG2 transport stream output from the adapter 1311 in accordance with the AIT multiplexed in the MPEG2 transport stream output from the adapter 1311. Thereafter, the reproduction of the service described above is continued until the service manager 1704f instructs to stop the reproduction of the service.

  The EPG 1702 is an electronic program guide (abbreviation for Electric Program Guide), and has a function of allowing a user to select a program to be recorded or reproduced. The EPG 1702 displays a list of broadcast programs and allows the user to select a desired program. FIG. 19 is an example of a screen display for selecting a program to be recorded. Time 1901, channel 1 (1902), and channel 2 (1903) are displayed in a grid pattern, and programs of each channel that can be played back at each time can be listed. The user can move the focus 1911 on the screen using the up / down / left / right cursor buttons 1401 to 1404 provided in the input unit 1310 of the terminal device 1300. When an OK button 1405 is further pressed, the currently focused program is selected as a playback target. The EPG 1702 acquires the channel identifier of the program from the library and knows it. When the user selects a playback target program, the EPG 1702 notifies the channel identifier service manager 1704f of the program. Further, the EPG 1702 according to the present embodiment notifies the Java (registered trademark) application described later of the channel identifier every time a user selects a playback target program. For this purpose, the EPG 1702 includes a register (WatchChannel wc) method as a Java (registered trademark) method for registering a listener class of a Java (registered trademark) application. When this method is called by specifying an instance of the listener class WatchChannel in the parameter wc, thereafter, the EPG 1702 notifies the selected channel identifier to the instance of the listener class every time the user selects a playback target program. The WatchChannel has a method called notify (ChannelNum cn). Each time the user selects a program to be played, the EPG 1702 sets the channel identifier to the parameter cn and calls the notify method.

  With the software configuration built in the ROM 1309 described above, the AIT multiplexed in the MPEG2 transport stream is extracted from the broadcast wave, and stored in the DSMCC file system multiplexed based on the information described there. (Trademark) program can be taken out, and the Java (registered trademark) program can be executed on the Java (registered trademark) VM 1703.

  Next, an example of a characteristic Java (registered trademark) application according to the present embodiment is shown below.

  FIG. 1 shows an internal configuration of a Java (registered trademark) application according to the present embodiment. The Java (registered trademark) application of this embodiment includes a program selection notification unit 1801, a total viewing time calculation unit 1802, a program attribute value correspondence table 1803, a first type advertisement display unit 1804, and a first type advertisement history storage unit. 1805, first-type advertisement selection means 1806, first-type advertisement storage means 1807, first-type advertisement acquisition means 1808, advertisement history condition establishment determination means 1809, second-type advertisement selection means 1810, second-type advertisement selection means 1810 It comprises an advertisement storage means 1811, a second type advertisement acquisition means 1812, and a second type advertisement display means 1813.

  The program selection notification unit 1801 receives the channel identifier selected as a reproduction target by the user notified from the EPG 1702. Specifically, the program selection notification means 1801 is an entity of the WatchChannel class that is the listener class of Java (registered trademark) described above. Each time the user selects a program to be played, the EPG 1702 sets the channel identifier to the parameter cn and calls the notify method of the WatchChannel. Then, the program selection notification unit 1801 notifies the total viewing time calculation unit 1802 of the channel identifier.

  When receiving the notification of the channel identifier, the total viewing time calculating means 1802 temporarily stores the received time in combination with the channel identifier. Next, referring to the program attribute value correspondence table 1803, the attributes and weights of the program being reproduced are checked based on the channel identifier and the time.

  FIG. 21 is a conceptual diagram of the data format of the program attribute value correspondence table 18. Reference numeral 2100 denotes a program attribute value correspondence table. Reference numeral 2101 denotes a channel identifier. Reference numeral 2102 denotes time, which describes the start time and end time of the program. Reference numeral 2103 denotes a program name, which is the name of a program broadcast from the start time to the end time described at the time 2102 of the channel specified by the channel identifier 2101. An attribute 2104 indicates a category to which the program belongs. For example, the attribute “movie drama” for movies and dramas, the attribute “music” for music-related programs, the “news” attribute for news programs, and the “animation” attribute for anime programs If the attribute is a cooking program, the attribute “meal” is added. A weight 2105 is a weight value used for calculating the total viewing time of each program.

  FIG. 25 is a specific example of the program attribute value correspondence table 18. 2500 is a specific example of the format 2100 of the program attribute value correspondence table. Reference numerals 2501 and 2503 are specific examples of the channel identifier 2101, 2501 when the channel identifier = 1, and 2503 when the channel identifier = 2. In the time 2502 column, a start time and an end time are described as specific expressions of the time 2102 of the format 2100 of the program attribute value correspondence table. 2504 is a specific example of the program name 2103, for example, “movie 12” or the like. 2505 is a specific example of the attribute 2104. For example, the attribute value of “movie 12” is described as “movie drama”. 2506 is a specific example of the weight 2105. For example, the weight of “movie 12” is “2”.

  For example, when channel identifier = 2 is notified to the total viewing time calculation means 1802 at time 12:00, the name of the currently playing program is “movie 12”, its attribute value is “movie drama”, and its weight Becomes “2”. Then, when the channel identifier = 1 is notified next at the time 15:00, the program with the channel identifier = 2 has been played for the entire time. Therefore, in this case, the program that has been played up to that time is “movie 12” (weight = 2) at 12: 00-14: 00, 14: 00-15: 00 with reference to FIG. “Music 14” (weight = 1). After 15:00, “Drama 16” (weight = 1) is reproduced because “channel identifier = 1 is reproduced”. The reproduced program is considered as the program that the user was watching.

  In this way, after examining the attributes and weights of the currently playing program, the total viewing time calculation means 1802 calculates the sum of the product of the viewing time and the weight of the corresponding program for each attribute value. This value is referred to as the total viewing time of each attribute value. When described by an expression, it is as follows.

Total viewing time = Σ (time of playing a program belonging to the attribute) x (weight assigned to the program)
(Summarize all programs belonging to each attribute)
For example, it is assumed that the total viewing time calculation means 1802 is notified of channel identifier = 2 at time 12:00, channel identifier = 1 is notified at time 14:00, and channel identifier = 2 is notified at time 17:00. . Then, the program played between 12:00 and 17:00, that is, the program viewed by the user is “movie 12” (attribute = movie drama, weight = 2, playback time = 2 hours), “news 14”. (Attribute = information, weight = 1, playback time = 1 hour), “drama 15” (attribute = movie drama, weight = 1, playback time = 1 hour), “drama 16” (attribute = movie drama, weight = 1) , Playback time = 1 hour).

  In this case, the total viewing time of each attribute is total viewing time = 2 hours × 2 + 1 hours × 1 + 1 hours × 1 = 6 with respect to the movie drama attribute. Regarding the information attribute, total viewing time = 1 hour × 1 = 1. As for the music attribute, food attribute, and animation attribute, the total viewing time = 0 because the program is not played back.

  The total viewing time calculation means 1802 stores all the channel identifiers reproduced in the past and the time when the channel identifier was notified. Each time the channel identifier is notified, the total viewing time of each attribute calculated as described above is output to the first type advertisement selection means 1806.

  The first type of advertisement acquisition unit 1808 acquires advertisement data to be displayed. The advertisement data may be any data such as graphics, text, video, and audio. For example, the advertisement data may be transferred as a file using a DSMCC file system multiplexed in an MPEG2 transport stream. In this case, the advertisement acquisition unit 1808 reads a file of advertisement data by using the DSMCC 1704d of the Java (registered trademark) library 1704. Alternatively, the advertisement data may be stored in an information server connected via the Internet and acquired using a network interface as necessary. In this case, the advertisement data can be acquired from the information server via the Internet using the http protocol or the like with a network connection function or the like separately provided by the Java (registered trademark) library 1704. The network connection function is a function provided as a basic library of Java (registered trademark), and is a generally known function. The first type advertisement acquisition unit 1808 outputs the acquired advertisement data to the first type advertisement storage unit 1807.

  Each advertisement data is assigned an attribute value in the same manner as a program. For example, movie drama attributes are assigned to movie advertisements. Information attributes are assigned to advertisements such as books and newspapers. In another example, music attributes are assigned to music CD advertisements.

  The first type advertisement storage unit 1807 receives the advertisement data output from the first type advertisement acquisition unit, and temporarily or permanently stores the advertisement data using the primary storage unit 1308 or the secondary storage unit 1307. Since attributes are assigned to the advertisement data, the storage format is as shown in FIG. Reference numeral 2600 denotes a table for storing, and an attribute 2601 and advertisement data 2602 are stored in combination. FIG. 27 shows an example of stored advertisement data. For example, a movie A bitmap, a movie B bitmap, or the like is stored as advertisement data of an attribute value movie drama.

  The first type of advertisement selection means 1806 takes out one new advertisement data from the first type of advertisement storage means 1807 each time the total viewing time of each attribute is output from the total viewing time calculation means 1802. The advertisement data is selected such that the advertisement data assigned to each attribute is selected according to the ratio of the total viewing time of each attribute obtained from the total viewing time calculation means 1802.

  For example, in the above-described example, the total viewing time = 6 for the movie drama attribute. Regarding the information attribute, the total viewing time = 1. Regarding the music attribute, food attribute, and animation attribute, the total viewing time = 0 because the program is not played back. Thus, the advertisement is selected at a ratio of movie drama attribute advertisement: information attribute advertisement: music attribute advertisement: food attribute advertisement: animation attribute advertisement = 6: 1: 0: 0: 0. That is, the advertisement selecting means 1806 generates an integer random number from 1 to 7, and if the random value is 1 to 6, it selects one from the movie drama attribute advertisement, or if the random value is 7, the advertisement of the information attribute Choose one from For example, if the column value is 3, “Movie B Bitmap” is selected as one example from the advertisement of the movie drama attribute.

  The advertisement data selected by the first type advertisement selection unit 1806 is passed to the first type advertisement history storage unit and the advertisement history condition establishment determination unit 1809 each time it is selected.

  The first type advertisement history storage unit 1805 stores all advertisement data passed from the first type advertisement selection unit 1806. Thereby, all advertisements selected in the past can be stored as advertisement data history in time series. At the same time, the first type advertisement history storage unit outputs the advertisement data history to the first type advertisement display unit 1804. At this time, the advertisement data history is passed in time series in the selected order.

  The first type advertisement display means 1804 displays a list of advertisement data selected in the past using the advertisement data history received from the first type advertisement history storage means 1805. The list display method is arbitrary. The advertisement data may be simply displayed in chronological order on the display 1305, but in this embodiment, the advertisement data is displayed one by one in a 5 × 5 square like a bingo game card. . When displaying in the bingo game card format, the first type advertisement display means 1804 selects and extracts 25 types of advertisement data from the first type advertisement storage means 1807 in advance and selects them in a 5 × 5 cell. The display position is determined so that 25 types of advertisement data are displayed one by one, and the advertisement received later from the first type advertisement history storage means 1805 is displayed at this predetermined display position. The merit of taking such a method is that the display position can be determined according to the importance of the advertisement. For example, the first type of advertisement display means 1804 can obtain the total viewing time for each attribute from the total viewing time calculation means 1802, and those having a large total viewing time value are regarded as important attributes, and those attributes It is possible to take a technique such as placing advertisement data to which is assigned in a prominent position. The scheduled display position information determined here is notified to the advertisement history condition establishment determination means 1809 together with the advertisement data history received from the first type advertisement history storage means 1805.

  The timing at which the first type of advertisement display means 1804 displays the advertisement data history on the screen is the moment when the advertisement data history is received from the first type of advertisement history storage means 1805 and the user instructs display of the advertisement history with the remote control key. Let any moment you do. Thereby, the user can browse the advertisement data not only when the playback target channel is switched but also at an arbitrary timing.

  By configuring the first type advertisement display means 1804 as described above, each time the first type advertisement data history is received from the first type advertisement history storage means 1805, the newly selected advertisement data is displayed. It becomes possible to display advertisement data selected in the past together.

  For example, the first type of advertisement display means 1806 displays the movie drama attribute advertisement of the total viewing time data at an appropriate time: the information attribute advertisement: the music attribute advertisement: the food attribute advertisement: the animation attribute advertisement = 10: Based on the ratio of 10: 3: 1: 1, 25 pieces of advertisement data are selected and acquired from the first advertisement storage means 1807, and the display scheduled position is determined with the bingo card 2800 as shown in FIG.

  When the first type advertisement selection unit 1806 first selects “movie B bitmap”, the first type advertisement history storage unit 1805 stores “movie B bitmap”, and the first type advertisement display unit 1806 Then, the “movie B bitmap” is displayed at the position of the movie B planned position. This is the bingo card 2900 shown in FIG.

  Next, when the first type of advertisement selection unit 1806 selects “Book A Bitmap”, the first type of advertisement history storage unit 1805 adds and stores “Book A Bitmap” in chronological order. The seed advertisement display means 1806 displays the “book A bitmap” at the position of the book A planned position, and further displays the “movie B bitmap” selected in the past at the position of the movie B planned position. This is the bingo card 3000 shown in FIG. At this time, if the newly selected “real A bitmap” is highlighted, a new advertisement can be clearly shown to the user.

  The advertisement history condition establishment judging means 1809 receives the display position information of advertisement data and the advertisement data history from the first type advertisement display means 1804, and judges whether or not the advertisement data history satisfies a specific condition. For example, the condition is that the advertisement data included in the advertisement data history matches a predetermined combination of advertisement data. In the case of the bingo card described above, it is a condition that all five advertisement data corresponding to five advertisement display scheduled positions arranged in any one of the vertical, horizontal, and diagonal directions are selected. For example, as the user repeats channel selection, the first type of advertisement selection means 1806 performs “movie B bitmap”, “book A bitmap”, “movie D bitmap”, “book B bitmap”, and “movie A bitmap”. Assume that “Movie C Bitmap” and “Movie E Bitmap” are selected in this order. At this time, the display of the first type advertisement display means 1804 is as shown in the bingo card 1800 of FIG. 18, and “movie A bitmap” “movie B bitmap” “main A bitmap” “movie D bit” in the vertical direction. Five types of advertisement data from “Map” to “Movie E Bitmap” are arranged. Therefore, the advertisement history condition establishment determining unit 1809 determines that a specific condition is satisfied. When a specific condition is satisfied, the advertisement history condition establishment determining unit 1809 notifies the second type advertisement selecting unit of attribute values corresponding to the combination of advertisement data that satisfies the condition.

  Since the second type of advertisement acquisition unit 1812 has a function equivalent to that of the first type of advertisement acquisition unit 1808, the description thereof will be omitted. The difference is that different types of advertisements can be acquired from different positions independently of the first type of advertisement acquisition means 1808.

  Since the second type of advertisement storage unit 1811 has the same function as the first type of advertisement storage unit 1807, the description thereof will be omitted. The difference is that different types of advertisements can be stored independently of the first type of advertisement acquisition means 1808.

  The second type advertisement selection means 1810 selects and acquires one advertisement data belonging to the attribute value received from the advertisement history condition establishment judgment means 1809 from the advertisement data stored in the second type advertisement storage means 1811. To do. The advertisement data may be selected by an arbitrary method, but here, the advertisement data is selected according to the ratio of each of the five attribute values. For example, the advertisement history condition establishment determining means 1809 is specified by five types of advertisement data of “movie A bitmap” “movie B bitmap” “main A bitmap” “movie D bitmap” “movie E bitmap”. If the condition is satisfied, information of four movie drama attributes and one information attribute is notified to the second type advertisement selection means. In this case, the movie drama attribute: information attribute = 4: 1 is selected. Specifically, an integer random number of 1 to 5 is generated. If the random value is 1 to 4, a movie drama attribute advertisement is selected, and if the random value is 5, an information attribute advertisement is selected. The advertisement data stored in the means 1810 is selected and acquired. The advertisement data selected by the second type advertisement selecting unit 1810 is delivered to the second type advertisement displaying unit 1813.

  The second type advertisement display means 1813 displays the received advertisement data on the display 1305. The display method is arbitrary. The advertisement data may be displayed alone, or may be displayed on the same screen simultaneously with the first type advertisement displayed by the first type advertisement display means 1804.

  In the first embodiment, the broadcast receiving apparatus is configured. However, the present invention is not limited to this, and the present invention can be configured as an arbitrary reproducing apparatus as long as the apparatus reproduces content. For example, the present invention can be applied to a device that takes in and plays back content via the Internet.

  In the first embodiment, the advertisement display service is realized by downloading and executing the Java (registered trademark) program. However, the present invention is not limited to this, and any component can be realized in the form recorded in the ROM. is there. For example, the total viewing time calculating means and the program attribute value correspondence table may be realized in a form of being previously built in the ROM or RAM of the terminal. It is also possible to implement all Java (registered trademark) programs in the form of being built in the ROM or RAM of the terminal.

  In the first embodiment, the Java (registered trademark) language is taken as an example of the program description language.

  The broadcast receiving apparatus according to the present invention has a function of historically displaying advertisements displayed in the past, and is useful as an interactive broadcast receiving terminal or the like. In addition to receiving broadcasts, the present invention is also effective for applications such as content playback via the Internet.

The figure which shows an example of a structure of the Java (trademark) program in this Embodiment. The figure which shows an example of the usage of the frequency band used for communication between a broadcasting station side system and a terminal device in the cable television system in this Embodiment The figure which shows an example of the usage of the frequency band used for communication between a broadcasting station side system and a terminal device in the cable television system in this Embodiment The figure which shows an example of the usage of the frequency band used for communication between a broadcasting station side system and a terminal device in the cable television system in this Embodiment The figure which shows an example of a structure of TS packet defined by the MPEG2 specification in this Embodiment The figure which shows an example of the MPEG2 transport stream in this Embodiment The figure which shows an example of the division | segmentation when the PES packet defined by the MPEG2 specification in this Embodiment is transmitted using a TS packet The figure which shows an example of the division | segmentation when the MPEG2 section defined by the MPEG2 specification in this Embodiment is transmitted using a TS packet. The figure which shows an example of a structure of the MPEG2 section defined by the MPEG2 specification in this Embodiment. The figure which shows an example of utilization of the MPEG2 section defined by the MPEG2 specification in this Embodiment The figure which shows an example of utilization of PMT prescribed | regulated by the MPEG2 specification in this Embodiment The figure which shows an example of utilization of PAT prescribed | regulated by the MPEG2 specification in this Embodiment The figure which shows an example of the hardware constitutions of the broadcast recording / reproducing apparatus based on this invention in this Embodiment The figure which shows an example of the front panel of the input part 1310 in the hardware constitutions of the terminal device 1200 which concerns on this invention in this Embodiment. The figure which shows an example of the device connection at the time of video recording of the video recording / reproducing apparatus based on this invention in this Embodiment The figure which shows an example of the device connection at the time of reproduction | regeneration of the video recording / reproducing apparatus based on this invention in this Embodiment The figure which shows an example of the program structure which the terminal device concerning this invention in this Embodiment preserve | saves The figure which shows an example of the advertisement data log | history display in this Embodiment The figure which shows an example of EPG which the terminal device which concerns on this invention in this Embodiment performs The figure which shows an example of the information for the broadcast reception in this Embodiment The figure which shows an example of the format of the program attribute value correspondence table in this Embodiment The figure which shows an example of the content of AIT which the DVB-MHP standard concerning this invention in this Embodiment prescribes | regulates The figure which shows an example of the file system transmitted by the DSMCC system based on this invention in this Embodiment The figure which shows an example of the program structure which the terminal device concerning this invention in this Embodiment preserve | saves The figure which shows an example of the program attribute value correspondence table in this Embodiment The figure which shows an example of the storage format of the advertisement data in this Embodiment The figure which shows an example of the memory | storage of advertisement data in this Embodiment The figure which shows an example of the advertisement data log | history display in this Embodiment The figure which shows an example of the advertisement data log | history display in this Embodiment The figure which shows an example of the advertisement data log | history display in this Embodiment

Explanation of symbols

1801 Program selection notification unit 1802 Total viewing time calculation unit 1803 Program attribute value correspondence table 1804 First type advertisement display unit 1805 First type advertisement history storage unit 1806 First type advertisement selection unit 1807 First type advertisement storage unit 1808 First type advertisement acquisition unit 1809 Advertisement history condition establishment determination unit 1810 Second type advertisement selection unit 1811 Second type advertisement storage unit 1812 Second type advertisement acquisition unit 1813 Second type advertisement display unit

Claims (4)

Program attribute value correspondence storage means for storing a correspondence between a program and an attribute value;
Program weight value storage means for storing a correspondence between a program and a weight value used for the total viewing time calculation;
Total viewing time calculating means for calculating the total viewing time of each attribute, which is a sum of the product of the viewing time of the program corresponding to each attribute value and the weight set for the program;
A first type of advertisement selecting means for selecting one first type of advertisement associated with the attribute with a higher probability as the total viewing time of each attribute is longer;
A first type of advertisement history storage means for storing a history of advertisements selected by the first type of advertisement selection means;
A broadcast receiving apparatus comprising: a first type of advertisement display means for displaying an advertisement stored in the first type of advertisement history storage means based on a history. Advertising history condition establishment judging means for judging whether or not the history of the first type of advertisement stored in the first type of advertising history storage means satisfies a certain condition;
A second type of advertisement selection that newly selects a second type of advertisement different from the first type of advertisement when the history of the first type of advertisement determines that the history of the first type of advertisement satisfies a certain condition. Means,
2. The broadcast receiving apparatus according to claim 1, further comprising: a second type of advertisement display means for displaying the second type of advertisement selected by the second type of advertisement selection means. The second type advertisement selection means corresponds to the first type advertisement that satisfies the certain condition when the advertisement history condition establishment judging means judges that the history of the first type advertisement satisfies the certain condition. 3. The broadcast receiving apparatus according to claim 2, wherein one second type advertisement is newly selected from the second type advertisements associated with the attribute values attached thereto. 3. The first-type advertisement history condition establishment determining means determines a certain condition to be satisfied by the history of the first-type advertisement by a ratio of past total viewing time of each attribute value. Or the broadcast receiving apparatus in any one of 3.

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