JP3568196B2 - Digital broadcast receiving apparatus and program extracting method in digital broadcast - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital broadcast receiving apparatus and a program extracting method in digital broadcasting.
[0002]
[Prior art]
In recent years, in television broadcasting, instead of terrestrial analog broadcasting technology, which has been mainly used until now, terrestrial digital broadcasting, communication satellites (CS) and broadcast satellites (BS) have been adopted. Digital broadcasting technology for transmitting digital signals via the Internet is rapidly spreading.
[0003]
In digital broadcasting, image data, audio data, and the like are compressed and multiplexed for broadcasting, so that the number of channels and the number of programs are extremely large. On the other hand, in digital broadcasting, information such as an electronic program guide (EPG: Electronic Program Guide) relating to a genre and a broadcast time of a program to be broadcast and text broadcasting are transmitted together with image data and audio data corresponding to each channel. . What supports the user's tuning operation using this EPG or the like is provided.
[0004]
For example, Japanese Patent Application Laid-Open No. 10-28243 discloses that a remote control device provided with a "favorite button" is used to extract a program matching an attribute such as a genre specified by an operation on the remote control device based on an EPG. A music selection device is disclosed.
[0005]
Also, for example, Japanese Patent Application Laid-Open No. H11-220666 discloses a program that receives information indicating the attribute of a program such as a broadcast date and time and the value of the program to be transmitted together with the program and, based on this information, a program adapted to the user's preference. Is disclosed.
[0006]
Further, for example, in Japanese Patent Application Laid-Open No. 11-252577, a program according to the user's preference is extracted by determining whether or not a preset keyword is included in information on a program title, program contents, performers, and the like. A receiver is disclosed.
[0007]
As described above, many techniques for extracting a program according to the user's preference from a large number of programs to be broadcast have been proposed.
[0008]
[Problems to be solved by the invention]
In any of the above techniques, a criterion for extracting a program suitable for the user's preference is a genre, a broadcast time, and the like designated by the user.
However, it is difficult to express a user's demand on one scale.
[0009]
That is, when the user selects a program, the determination is made based on a plurality of conditions, not based only on the broadcasting time zone or the genre. For example, it is difficult to watch a program of a favorite genre if the broadcasting time zone and the user's convenience do not match, and if digital broadcasting is charged, the fee charged for viewing each program is very high. It is anxious. For this reason, even if the program is extracted based only on the genre or only on the broadcast time zone, it is difficult to say that the user's request is reflected.
[0010]
Therefore, in order to faithfully reflect the demands of the user, it is necessary to comprehensively judge the user's preferences and conveniences from a plurality of aspects. Therefore, the user has to carefully select a program from the programs extracted by the above-described conventional receiving device or receiver.
[0011]
An object of the present invention is to allow a user's request to be comprehensively reflected when extracting a program from programs receivable by digital broadcasting.
[0012]
[Means for Solving the Problems]
The present invention has the following features in order to solve such a problem. In the following description of the means, a configuration corresponding to the embodiment is shown by parentheses as an example. Reference numerals and the like are reference numerals and the like in the drawings described later.
[0013]
An invention according to claim 1 is a digital broadcast receiving apparatus for extracting a program according to a condition from programs broadcast by digital broadcasting, wherein the program attribute storage means, the designation means, the first and second tables are provided. And extraction means. The program attribute storage means stores the information of the program to be broadcast and the attribute information indicating the attribute of each program in association with each other. The designation means receives from the user a designation of a priority among a plurality of first condition items and a designation of a priority of a second condition item which is a more detailed condition item belonging to each of the first condition items. . The first table stores the priority of each first condition item specified by the specifying means in association with the first condition item. The second table stores the priority of each second condition item specified by the specifying means in association with the second condition item. The extracting means calculates the overall priority of each program based on the program information and attribute information and the priority stored in the first and second tables, and calculates the overall priority of each program. By comparison, a predetermined number of programs are extracted from programs stored in the program attribute storage means in order of overall priority.Further, the priority of the second condition item can be set to a positive value and a negative value, and when the designation unit receives a negative value as the priority of the second condition item, Is characterized in that extraction of programs belonging to the second condition item is prohibited.
[0014]
Here, the information of the program to be broadcast and the attribute information indicating the attribute of each program stored in the program attribute storage means refer to, for example, EPG information transmitted in digital broadcasting.
[0015]
According to the first aspect of the present invention, in a digital broadcast receiving apparatus for extracting a program according to a condition from a digital broadcast program, an attribute indicating information on a broadcast program and an attribute of each program The information is stored in the program attribute storage unit in association with the information, and when the plurality of types of conditions and the priorities of these conditions are specified by the specifying unit, the specified plurality of types of conditions and the priority of each condition are stored. A predetermined number of programs are stored in the condition storage means, and a predetermined number of programs are selected from the programs stored in the program attribute storage means by the extraction means based on the plurality of types of conditions and the priority of each condition stored in the condition storage means. Extract.In addition, it is possible to prohibit a program belonging to a specific second condition item from being extracted.
[0016]
Claim 4Is a program extraction method in digital broadcasting for extracting a program that meets conditions from among programs receivable by a digital broadcast receiving apparatus, and includes information on a broadcasted program and an attribute related to each program. Storing the program attribute information associated with the attribute information indicating the first condition item, storing the priority of each of the designated first condition items in the first table in association with the first condition item, The stored priority of each second condition item is stored in a second table in association with the second condition item, and the program attribute information and the priority stored in the first and second tables are stored in the second table. The overall priority of each program is calculated based on the above, and by comparing the overall priority of each program, a predetermined order is determined from the programs included in the program attribute information in descending order of the overall priority. Extracting a number of programs .
[0017]
A digital broadcast receiving apparatus according to claim 1, andClaim 4According to the program extraction method described in (1), a plurality of conditions desired by the user can be comprehensively reflected when a program according to the user's request is extracted based on information such as EPG information. Therefore, it is possible to efficiently extract programs in accordance with the user's demands in various aspects, such as not only the user's preference but also the time convenience and fee, and to provide a digital broadcast receiving apparatus having extremely high convenience. can do.
[0018]
According to a second aspect of the present invention, in the digital broadcast receiving apparatus according to the first aspect, the extracting means includes, for each first condition item, the second program to which the program belongs based on the program information or attribute information. Multiplying means for searching for the priority of the second condition item and multiplying the priority of the second condition item by the priority of the first condition item to which the second condition item belongs; A totaling means for summing up the multiplication values calculated by the multiplying means for each item to calculate the overall priority, and a comparing means for comparing the overall priority for each program. And
[0019]
According to the invention described in claim 2, for each first condition item, the priority of the second condition item to which the program belongs and the priority of the first condition item to which the second condition item belongs , And summing these, it is possible to calculate the priority that comprehensively reflects the user's desire.
[0022]
Claim 3The digital broadcast receiving apparatus according to any one of claims 1 to 3, further comprising a display control means for displaying, on a television receiver, a list of information on the programs extracted by the extracting means. And
[0023]
Claim 3According to the invention described in (1), the digital broadcast receiving apparatus further includes display control means for displaying a list of the programs extracted by the extracting means on the television receiver, so that a desired program can be immediately set based on the extracted result. Can be selected, and the convenience can be further improved.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0025]
First, the configuration will be described.
FIG. 1 is a diagram showing a configuration of a digital broadcast receiving system 1 according to an embodiment of the present invention. As shown in FIG. 1, the digital broadcast receiving system 1 includes a tuner box 2 connected to an antenna (not shown), a television receiver 3, and a remote controller 4 for operating the television receiver 3.
[0026]
The tuner box 2 is connected to an antenna (not shown) and the television receiver 3. The tuner box 2 generates a video signal, an audio signal, and the like based on a broadcast signal input from an antenna, and outputs the video signal and the audio signal to the television receiver 3.
[0027]
Here, the antenna (not shown) is a parabola antenna for receiving satellite broadcasting, which is installed at an angle suitable for a predetermined satellite such as CS or BS. This antenna receives a broadcast signal via various satellites and outputs the received broadcast signal to the tuner box 2.
[0028]
The broadcast signal received by the antenna (not shown) includes time information indicating the current time, EPG information, and the like, in addition to video and audio data of the program. The EPG information includes a genre code for identifying a genre, a title, character information indicating a viewing fee, etc., for a currently broadcasted program or a program to be broadcasted, and information on a broadcast time.
[0029]
The genre of the program is an attribute related to the content of the program, and is classified in advance into a first genre and a second genre according to an agreement with the program transmitting station. The first genre includes items such as Western films, Japanese films, sports 1, sports 2, music, dramas / dramas, and so on. Furthermore, each of the first genres is subdivided by a second genre. For example, the Western genre, which is the first genre, is further subdivided into items such as action, science fiction fantasy, comedy, and the like.
[0030]
A genre code is associated with each of the first genre item and the second genre item. When a program is transmitted by digital broadcasting, the genre code is also transmitted, so that the digital broadcast receiving system 1 can identify the genre of the received program.
[0031]
The television receiver 3 includes a display 31, a speaker 32, and an IR (InfraRed) light receiving unit 33. The display 31 displays an image corresponding to a video signal input from the tuner box 2. The speaker 32 outputs sound according to the sound signal input from the tuner box 2. The IR light receiving unit 33 receives infrared rays transmitted from the remote control device 4 and outputs an operation signal carried by the infrared rays to the tuner box 2.
[0032]
The remote control device 4 includes an IR light emitting unit 41 and various keys, which will be described later. According to the remote controller 4, various operation signals corresponding to pressing operations of various keys and the like are transmitted from the IR light emitting unit 41 to the IR light receiving unit 33 by infrared rays, so that the television receiver 3 and the tuner box 2 can be remotely controlled. .
[0033]
Next, an internal circuit configuration of each unit configuring the digital broadcast receiving system 1 will be described in detail with reference to FIG. FIG. 2 is a block diagram showing the internal configuration of the digital broadcast receiving system 1. 2, the tuner box 2, the television receiver 3, the display 31, the speaker 32, the IR light receiving unit 33, the remote control device 4, and the IR light emitting unit 41 correspond to the respective components shown in FIG. Is attached.
[0034]
As shown in FIG. 2, the tuner box 2 includes a tuning control device 21 and a digital tuner 22. The tuning control device 21 includes a CPU (Central Processing Unit) 201, a memory 202, an I / O unit 203, an input unit 204, and a modem 205. These components are connected by a bus 206 and transmit and receive control signals, data, and the like to and from each other.
[0035]
The CPU 201 reads various processing programs stored in the memory 202. Then, the CPU 201 executes a process corresponding to the read processing program. Thereby, the function as the tuner box 2 is realized. The details of the processing content of the CPU 201 will be described later as appropriate when describing other components.
[0036]
Further, the CPU 201 executes a program extraction process described later by executing an application program stored in the memory 202. At the time of this program extraction processing, the CPU 201 selects a program of the user from the programs included in the EPG information based on the setting contents of the inter-item priority table 202a, the intra-item priority table 202b, and the history information table 202c described later. Extract programs closer to your request.
[0037]
The memory 202 stores various programs executed by the CPU 201 and data related to these programs. Further, the memory 202 stores at least a broadcast schedule of a program to be broadcast, a genre code of each program, and a fee for a paid program based on the EPG information received by the antenna 5. Here, the broadcast schedule is a broadcast start / end time, a channel number, and the like of a program currently being broadcast or to be broadcast from now on. The genre code includes a genre code of the first genre and a genre code of the second genre. The correspondence between the broadcast schedule and the genre code of each program is appropriately updated each time EPG information is transmitted.
[0038]
Further, in the present embodiment, the memory 202 stores an inter-item priority table 202a, an intra-item priority table 202b, and a history information table 202c.
Here, the configuration of each of these tables will be described with reference to FIGS.
[0039]
FIG. 3 is a diagram schematically illustrating a configuration of the inter-item priority table 202a.
As shown in FIG. 3, in the inter-item priority table 202a, “genre”, “time”, and “fee” are set as a plurality of items expressing the program desired by the user, and corresponding to these items. In addition, a set value and a reference value are set. These items are not limited to the above three types, and more items can be provided as long as they are attributes of the program in the EPG information.
[0040]
The setting values in the inter-item priority table 202a are determined by the user operating the remote control device 4 on how much importance is placed on each of the above items. The importance of each item is represented by the number of “☆” to make the user interface rich in operability.
[0041]
In the example shown in FIG. 3, five “☆” are attached to the item of “fee”, and are regarded as most important. Hereinafter, four “☆” are attached to “genre”, and three “☆” are attached to “time”. In other words, in the example shown in FIG. 3, the user places the highest importance on the “fee” being in line with his / her request, and then places importance on that the “genre” matches his / her preference. What suits you is set as the third most important item.
Accordingly, the items set in the inter-item priority table 202a are assigned priorities in the order of “fee”, “genre”, and “time”.
[0042]
In the inter-item priority table 202a, a reference value is set by the CPU 201 in association with the setting value set by the user. This reference value is obtained by quantifying the importance based on the number of “☆” assigned by the user.
[0043]
FIG. 4 is a diagram schematically illustrating the configuration of the intra-item priority table 202b. As shown in the figure, in the item priority table 202b, priority contents are set for each item of "genre", "time", and "fee".
[0044]
For example, in the item of "genre", priority contents such as "soccer", "baseball (domestic)", and "motor sports" are set, and are represented by the number of "☆" in association with each priority content. The set value has been set.
Five “☆” are set for “soccer”, and then four “☆” are set for “baseball (domestic)”. In addition, three “☆” are set for “motor sports”.
[0045]
In other words, as for the user's request, regarding the "genre" of the program, "soccer" has the highest priority, then the program belonging to the "baseball (domestic)" genre has priority, and then the "motor sports" genre Is set to give priority to the program.
[0046]
Then, in the intra-item priority table 202b, a reference value is set by the CPU 201 in association with the set value set by the user. This reference value is obtained by quantifying the importance based on the number of “☆” assigned by the user.
[0047]
In the item priority table 202b, similarly to the item of "genre", a plurality of priority contents are set for the item of "time" and "charge". In the example shown in FIG. 4, the set value represented by “☆” is set for “time” in the order of “1 to 2 hours”, “within 1 hour”, and “others”. A numerical reference value is set.
The reference value in the in-item priority table 202b can be changed by the CPU 201, for example, by changing the reference value "40" to "37" according to the setting contents of the history information table 202c described later.
[0048]
Further, as shown in FIG. 4, it is also possible to set “other” priority contents for each item of the intra-item priority table 202b. This allows the user to make ambiguous settings, which can be expected to improve convenience.
[0049]
FIG. 5 is a diagram schematically illustrating the configuration of the history information table 202c. As shown in FIG. 4, a history of the viewed program is stored in the history information table 202c.
In the example shown in FIG. 5, as the first history, a program belonging to the genre of "soccer", having a broadcast time of "2 hours" and a fee of "300 yen" is stored. As described above, the history of the program actually viewed by the user by the operation of the remote controller 4 is stored, and the reference value of the in-item priority table 202b is changed according to the genre, time, and fee of the program stored in the history. , The setting value set by the user and the actual viewing trend of the user can be reflected.
[0050]
An I / O (Input / Output) unit 203 shown in FIG. 2 includes a connector for connecting various external electronic devices (not shown) such as a video device to the tuner box 2.
[0051]
The input unit 204 includes various switches (not shown) such as a power switch. The input unit 204 generates an operation signal according to a user's operation of a switch or the like, and outputs the operation signal to the CPU 201. Note that the input unit 204 may be configured to include an IR light receiving unit for performing infrared communication with the remote control device 4.
[0052]
The modem 205 is a device for performing data communication via a public telephone line network, and is connected to a communication line as shown in FIG. As a result, bidirectional data communication with the program transmitting station is possible.
[0053]
Here, one of the processes executed by the CPU 201 will be described. When transmitting data to a predetermined communication destination based on an input instruction from an external device connected to the I / O unit 203, the CPU 201 controls the drive of the modem 205 and transmits the data via a communication line. To a predetermined communication destination.
[0054]
The digital tuner 22 further includes a filter 207 connected to the antenna 5, an amplifier circuit 208, a mixing circuit 209, an oscillator 210, a PLL (Phase Locked Loop) circuit 211, an IQ demodulation circuit 212, an A / D (Analog / Digital) converter 213. , NPSK demodulation circuit 214, TMCC decoder 215, descrambling unit 216, TS data separation unit 217, MPEG2 video decoder 218, MPEG2 audio decoder 219, video memory 220, screen processing circuit 221, and D / A (Digital / Analog) converter 222.
[0055]
The filter 207 passes only a signal in a predetermined frequency band among broadcast signals input from the antenna 5. The amplification circuit 208 amplifies the broadcast signal that has passed through the filter 207. However, the amplifier circuit may amplify a signal in a specific frequency band.
[0056]
The oscillator 210 generates an oscillation signal of a predetermined frequency based on the synchronization signal input from the PLL circuit 211, and outputs the oscillation signal to the mixing circuit 209. The PLL circuit 211 adjusts the oscillation frequency of the oscillation signal output by the oscillator 210 according to the control of the CPU 201 so as to extract and amplify only the broadcast signal of the channel designated by the CPU 201 via the bus 206.
[0057]
Here, one of the processes executed by the CPU 201 will be described. When a predetermined channel of digital broadcast is designated by an instruction input from the input unit 204 or an IR light receiving unit 33 described later, the CPU 201 outputs a control signal to the PLL circuit 311 to broadcast the designated channel. Set the frequency to tune to the radio wave. As a result, the video signal and the audio signal being broadcast on the designated channel are obtained by the components of the filter 207 to the D / A converter 222.
[0058]
The mixing circuit 209 converts the frequency of the signal input from the amplification circuit 208 into an intermediate frequency signal based on the oscillation signal input from the oscillator 210, and outputs the intermediate frequency signal to the subsequent IQ demodulation circuit 212.
[0059]
The IQ demodulation circuit 212 demodulates the signal input from the mixing circuit 209, generates an I (In-phase) signal and a Q (Quadrature-phase) signal, and outputs the generated signal to the A / D converter 213.
[0060]
The A / D converter 213 samples the I signal and the Q signal input from the IQ demodulation circuit 212, converts them into digital signals, and outputs the digital signals to the nPSK demodulation circuit 214.
[0061]
The nPSK demodulation circuit 214 selectively performs demodulation by three types. That is, in BS digital broadcasting, BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase Shift Keying), and TC8PSK (Trellis Coded 8Phase-Shift Kith-type modulation scheme) are used in accordance with conditions such as weather. Is adopted, but the nPSK demodulation circuit 214 selectively performs demodulation corresponding to each modulation method.
[0062]
Specifically, in the nPSK demodulation circuit 214, a transmission and multiplexing configuration signal (TMCC; Transmission and Multiplexing Configuration) indicating the three types of modulation schemes from the I and Q signals input from the A / D converter 213. Control), and outputs the TMCC signal to the TMCC decoder 215. Further, the nPSK demodulation circuit 214 demodulates the I signal and the Q signal according to the control signal input from the CPU 201 while appropriately switching the demodulation method, and outputs the demodulated I signal and the Q signal to the descrambler 216.
[0063]
Here, one of the processes executed by the CPU 201 will be described. The CPU 201 always recognizes the modulation method based on the TMCC signal. When there is a change in the modulation scheme, the CPU 201 outputs a control signal to the nPSK demodulation circuit 214 via the bus 206, and executes the modulation corresponding to the changed modulation scheme. The TMCC decoder 215 decodes the TMCC input from the nPSK demodulation circuit 214 and outputs it to the CPU 201.
[0064]
When the signal demodulated by the nPSK demodulation circuit 214 has been subjected to scramble processing, the descrambling section 216 descrambles the signal and outputs the signal to the TS data separation section 217.
[0065]
The TS data separation section 217 extracts a signal related to video, a signal related to audio, a signal related to other EPG information, and the like from the signal descrambled by the descrambling section 216. The TS data separation unit 217 outputs a signal related to video to the MPEG2 video decoder 218, a signal related to audio to the MPEG2 audio decoder 219, and a signal related to EPG information to the CPU 201 via the bus 206.
[0066]
Here, one of the processes executed by the CPU 201 will be described. Each time the EPG information is input from the TS data separation unit 217, the CPU 201 determines the channel number of the program currently being broadcast or to be broadcast, and the first genre and the second genre of each program based on the EPG information. The genre code is stored in the memory 202 in association with the genre code.
[0067]
The EPG information is periodically transmitted together with the broadcast signal, but the CPU 201 updates the contents of the memory 202 every time the EPG information is input from the TS data separation unit 217. In this manner, the EPG information in the memory 202 is always automatically updated, so that the CPU 201 can appropriately identify the channel and the genre code for each of the currently broadcast program and each of the programs to be broadcast.
[0068]
The MPEG2 video decoder 218 generates video data by using the work area provided in the video memory 220 and decodes a signal input from the TS data separation unit 217 in accordance with the MPEG2 system, and adapts to the television receiver 3. The video signal is output to the screen processing circuit 221. The screen processing circuit 221 combines the video signal input from the MPEG2 video decoder 218 with the display information input from the CPU 201, and outputs the resultant to the television receiver 3.
[0069]
The MPEG2 audio decoder 219 generates audio data by decoding the signal input from the TS data separation unit 217 according to the MPEG2 system, and outputs the audio data to the D / A converter 222. The D / A converter 222 generates an audio signal by converting the audio data input from the MPEG2 audio decoder 219 into an analog signal, and outputs the audio signal to the television receiver 3.
[0070]
Next, the configuration of the television receiver 3 will be described. The television receiver 3 includes a control device 301, a display control unit 302, an audio control unit 303, a display 31, a speaker 32, and an IR light receiving unit 33.
[0071]
The control device 301 outputs a video signal input from the screen processing circuit 221 of the tuner box 2 to the display control unit 302, and outputs an audio signal input from the D / A converter 222 to the audio control unit 303.
[0072]
The display control unit 302 drives and controls the display 31 based on the video signal input from the control device 301. As a result, the display 31 outputs the broadcast video. Further, the audio control unit 303 controls the driving of the speaker 32 based on the audio signal input from the control device 301. As a result, the speaker 32 outputs the broadcast audio.
[0073]
IR receiving section 33 receives infrared rays emitted from IR emitting section 41 of remote control device 4. Then, the IR light receiving unit 33 outputs various operation signals to the CPU 301 of the channel selection control device 21 based on the received infrared light.
[0074]
Next, the program extraction process executed by the CPU 201 will be described with reference to the flowchart in FIG.
[0075]
6, first, the CPU 201 acquires EPG information received by the antenna 5 and stored in the memory 202 (step S1).
[0076]
Subsequently, the CPU 201 refers to the inter-item priority table 202a and the intra-item priority table 202b in the memory 202 (step S2), and executes the inter-item priority table for each program included in the EPG information acquired in step S1. A score is calculated based on the reference values set in the in-item priority table 202b and the in-item priority table 202b (step S3).
[0077]
Then, the CPU 201 extracts a program whose score calculated in step S3 is higher (step S4), and causes the screen processing circuit 221 to generate OSD (on-screen display) information, thereby displaying the program on the display 31 of the television receiver 3. Is displayed as a list (step S5).
[0078]
Here, when a specific program is designated from the programs listed on the display 31 by the operation of the remote controller 4 (step S6; Yes), the broadcast of the designated program is output by the television receiver 3. (Step S7), and the process ends. If a certain period of time has elapsed without any operation by the remote control device 4, the present process is terminated.
[0079]
FIG. 7 is a diagram showing a candidate display screen 3a as an example of a screen displayed on the display 31 in step S5 of FIG.
As shown in FIG. 7, program A and program B are displayed on the candidate display screen 3a.
[0080]
Program A is the program with the highest score calculated in step S3 of FIG. 6, and program B is the program with the second highest score.
Here, taking the program A and the program B as an example, a method of calculating the score in step S3 in FIG. 6 will be described.
[0081]
The genre of the program A is “baseball (domestic)”. In the intra-item priority table 202b shown in FIG. 4, "40" is set as the reference value for the priority content "baseball (domestic)", and in the inter-item priority table 202a shown in FIG. “40” is set.
Therefore, the score regarding the genre is obtained by the following equation (1).
(Equation 1)
Reference value of “baseball (domestic)” × reference value of “genre” = 40 × 40 = 1600 (1)
[0082]
The broadcast time of the program A is “2 hours”. In the in-item priority table 202b, the reference value is "10" because the item corresponds to "others". In the inter-item priority table 202a, since the reference value of “time” is “30”, the score relating to time is obtained by the following equation (2).
[Equation 2]
Reference value of “others” × reference value of “time” = 10 × 30 = 300 (2)
[0083]
Furthermore, the viewing fee of program A is 200 yen, which corresponds to “400 yen or less” in the in-item priority table 202b, so that the reference value is “50”. Since the reference value of “charge” in the inter-item priority table 202a is “50”, the score relating to the charge is obtained by the following equation (3).
[Equation 3]
Reference value of “400 yen or less” × Reference value of “fee” = 50 × 50 = 2500 (3)
[0084]
Therefore, the score of the program A is obtained as 4400 according to the following equation (4).
(Equation 4)
Score on "genre" + score on "time" + on "fee"
Score = 1600 + 300 + 2500 = 4400 (4)
[0085]
Similarly, the score of the program B in the example shown in FIG. 7 is obtained as 3700 by the following equation (5).
(Equation 5)
50 × 40 + 40 × 30 + 10 × 50 = 3700 (5)
[0086]
Therefore, on the candidate display screen 3a shown in FIG. 7, program A is displayed at the top and program B is displayed at the second.
Then, in order to schematically show the score to the user, the score is represented by the number of symbols “◎” on the candidate display screen 3a. As a result, the user can know the approximate score, and can use it as a guide for selecting a program.
[0087]
Further, on the candidate display screen 3a, a message of "broadcasting" is displayed for the program B, as indicated by reference numeral C. This message indicates that the program is being broadcast.
This message allows the user to know that the broadcast of the program has already started.
[0088]
For paid programs, whether or not broadcasting has already started is an important criterion for judging whether to watch the program. The user can obtain important information that determines whether to view the program or not, depending on the presence or absence of the message indicated by the symbol C in FIG.
[0089]
When a predetermined operation is performed on the remote controller 4 while the candidate display screen 3a shown in FIG. 7 is being displayed, a list of programs having a lower score than each program displayed on the candidate display screen 3a is displayed. Alternatively, the screen may be switched.
[0090]
As described above, according to the digital broadcast receiving system 1 in the embodiment of the present invention, the inter-item priority table 202a and the intra-item priority table 202b are stored in the memory 202, and the user sets in advance in these tables. The program calculates a score for the program included in the EPG information based on the reference value obtained by digitizing the set value, and displays a list of programs having a high score on the display 31, thereby displaying a list of programs close to the user's request. Therefore, it is possible to extract a program that meets a wide variety of requests from the user.
That is, instead of simply extracting a program that is suitable only for the genre of the program or only for the broadcast time, an arithmetic process is performed after weighting a plurality of items and judgment is made from the plurality of items. By comprehensively judging, it is possible to extract a program close to the user's request.
[0091]
Further, when the reference values set in the inter-item priority table 202a and the intra-item priority table 202b are appropriately changed by the CPU 201 based on the contents of the history information table 202c storing information on programs watched by the user. Can reflect the set values that the user has intentionally set and the actual viewing trends to extract suitable programs. Thereby, it is possible to more faithfully extract a program that meets the user's request.
[0092]
In the above embodiment, the memory 202 stores the inter-item priority table 202a, the intra-item priority table 202b, and the history information table 202c one by one. Is used by a plurality of users, an inter-item priority table 202a, an intra-item priority table 202b, and a history information table 202c are stored for each user. May be specified and input. In this case, for a plurality of users, it is possible to extract and display a list of programs according to each request.
[0093]
Further, in the above-described embodiment, only the set value and the reference value of the positive value are set in the intra-item priority table 202b. However, the present invention is not limited to this. You may be able to.
For example, if the reference value “−200” is set for the priority content “adult” in the item of “genre”, in the program extraction process of FIG. 6, programs belonging to the “adult” genre are displayed on the candidate display screen 3a. Never be. As described above, it is possible to prevent a program having a specific attribute from being extracted, and it is also possible to block harmful information to young people and young people.
[0094]
Further, in the above-described embodiment, the tuner box 2 is configured to be externally connected to the television receiver 3. However, a module that realizes the function of the tuner box 2 may be configured to be built in the television receiver 3. It is.
[0095]
In the process shown in step S3 in FIG. 6, the method of calculating the score of each program is not limited to the above-described method, and other detailed configurations can be appropriately changed.
[0096]
【The invention's effect】
A digital broadcast receiving apparatus according to claim 1, andClaim 4According to the program extraction method described in (1), a plurality of conditions desired by the user can be comprehensively reflected when a program according to the user's request is extracted based on information such as EPG information. Therefore, it is possible to efficiently extract programs in accordance with the user's demands in various aspects, such as not only the user's preference but also the time convenience and fee, and to provide a digital broadcast receiving apparatus having extremely high convenience. can do.In addition, it is possible to prohibit a program belonging to a specific second condition item from being extracted.
[0097]
According to the invention described in claim 2, for each first condition item, the priority of the second condition item to which the program belongs and the priority of the first condition item to which the second condition item belongs , And summing these, it is possible to calculate the priority that comprehensively reflects the user's desire.
[0099]
Claim 3According to the invention described in (1), the digital broadcast receiving apparatus further includes display control means for displaying a list of the programs extracted by the extracting means on the television receiver, so that a desired program can be immediately set based on the extracted result. Can be selected, and the convenience can be further improved.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a digital broadcast receiving system 1 according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an internal circuit of each unit constituting the digital broadcast receiving system 1 of FIG.
FIG. 3 is a diagram schematically showing a configuration of an inter-item priority table 202a stored in a memory 202 of FIG. 1;
FIG. 4 is a diagram schematically showing a configuration of an intra-item priority table 202b stored in a memory 202 of FIG. 1;
FIG. 5 is a diagram schematically showing a configuration of a history information table 202c stored in a memory 202 of FIG.
FIG. 6 is a flowchart showing a program extraction process executed by a CPU 201 of FIG. 1;
7 is a diagram showing a candidate display screen 3a as an example of a screen displayed on the display 31 in the program extraction process shown in FIG.
[Explanation of symbols]
1 Digital broadcast receiving system
2 Tuner box
3 TV receiver
4 Remote control device
5 Antenna
21 Tuning control device
22 Digital Tuner
31 Display
32 speakers
33 Receiver
41 Light emitting unit
202 memory
203 I / O section
204 input section
205 modem
206 bus
207 Filter
208 amplifier circuit
209 Mixing circuit
210 oscillator
211 PLL circuit
212 IQ demodulation circuit
213 Converter
214 nPSK demodulation circuit
215 TMCC decoder
216 Descrambler
217 TS data separation unit
218 Video Decoder
219 Audio Decoder
220 video memory
221 Screen processing circuit
222 D / A converter
301 control device
302 Display control unit
303 Voice control unit

Claims (4)

In a digital broadcast receiving apparatus for extracting a program according to a condition from programs broadcast by digital broadcasting,
Program attribute storage means for storing information of programs to be broadcast and attribute information indicating attributes of each program in association with each other;
Specifying means for receiving from a user a designation of a priority among a plurality of first condition items and a designation of a priority of a second condition item which is a more detailed condition item belonging to each first condition item;
A first table that stores the priority of each first condition item specified by the specifying unit in association with the first condition item;
A second table for storing the priority of each second condition item designated by the designation means in association with the second condition item;
The overall priority of each program is calculated based on the information and attribute information of the program and the priority stored in the first and second tables, and the overall priority of each program is compared. Extracting means for extracting a predetermined number of programs from the programs stored in the program attribute storage means in descending order of overall priority,
The priority of the second condition item can be set to a positive value and a negative value, and when the designation unit receives a negative value as the priority of the second condition item, the extraction unit: A digital broadcast receiving apparatus, wherein extraction of a program belonging to the second condition item is prohibited. The extracting means,
For each first condition item, the priority of the second condition item to which the program belongs is searched based on the information or attribute information of the program, and the priority of the second condition item and the second condition item are Multiplication means for multiplying the priority of the first condition item to which the first condition item belongs,
Summing means for summing up the multiplied values calculated by the multiplying means for each of the first condition items to calculate the overall priority;
Comparing means for comparing the overall priority for each program;
The digital broadcast receiving device according to claim 1, comprising: The digital broadcast receiving device according to claim 1 , further comprising a display control unit that causes a television receiver to display a list of information on the program extracted by the extraction unit. A program extraction method in digital broadcasting for extracting a program according to conditions from programs receivable by a digital broadcast receiving device,
Storing program attribute information in which information of a program to be broadcast is associated with attribute information indicating an attribute of each program;
Receiving from a user a designation of a priority among a plurality of first condition items and a designation of a priority of a second condition item that is a more detailed condition item belonging to each first condition item;
The priority of each of the specified first condition items is stored in a first table in association with the first condition item, and the priority of each of the specified second condition items is stored in a second condition item. And stored in the second table in association with
By calculating the overall priority of each program based on the program attribute information and the priority stored in the first and second tables, and comparing the overall priority of each program, Extract a predetermined number of programs from the programs included in the program attribute information in the order of high overall priority,
The priority of the second condition item can be set to a positive value and a negative value, and when a negative value is received as the priority of the second condition item, the program belonging to the second condition item A program extraction method characterized in that extraction of a program is prohibited.

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