JPH1127637A - Broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a down-load wait time by down-loading a decode software program (library) from a broadcast based on the down-load priority and storing the program in a program buffer. SOLUTION: When zapping is started, a library EPG analysis section 12 analyzes library EPG data received by a library EPG reception section 11 as a list. Concretely number of libraries at a time (t+α) considered to require the library actually for the zapping is counted, where (t) is a current time. The library EPG analysis section 12 decides down-loading of the library with priority from many numbers and provides an output of a control signal to a library reception section 13. The library reception section 13 down-loads the library in the order denoted by the control signal based on the control signal to store the library to a library buffer 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to broadcasting broadcasted by a data broadcasting method for broadcasting program signals of at least two types of broadcasting systems on a plurality of channels and a decoding software program for decoding the broadcasted program signals. The present invention relates to a broadcast receiving device that receives a signal.

[0002]

2. Description of the Related Art FIG. 12 is a diagram showing the configuration of a broadcasting system using broadcasting satellites.
Alternatively, a broadcaster such as a television broadcasting station that broadcasts broadcast signals of a plurality of channels, and 202 is a plurality of broadcasters 20
1 is a broadcaster composed of broadcast satellites that receive a broadcast signal from the receiver 1, process the broadcast signal, and transmit the processed signal to a viewer terminal (broadcast receiver).

In the conventional broadcasting system, all broadcasters perform program production and broadcast transmission for all channels in a common broadcasting system such as MPEG (a video transmission system, a video encoding system, etc.), and a viewer side. In this case, a broadcast is received and reproduced using dedicated hardware corresponding to the common broadcast system. That is, in the conventional broadcasting system, as shown in FIG.
MPEG broadcasted from Broadcaster 1 via broadcaster 202
And the like are received by the dedicated hardware of the broadcast receiving apparatus, and full screen display is performed on a TV or the like.

On the other hand, with the improvement in computer performance, video signal processing which could only be processed by dedicated hardware in the past can be realized by software processing using general-purpose hardware. That is, if signal processing by such software is used, a decoding software program (library) for decoding each broadcast data is loaded into general-purpose hardware,
It is possible to decode a plurality of broadcast data having different broadcast systems. If it becomes possible for the receiving side to decode a plurality of broadcast data having different broadcast systems,
Broadcasting in which various broadcasting methods are mixed, such as data broadcasting in a form different from conventional video / audio broadcasting such as G broadcasting and animation broadcasting, can be performed. In such a broadcasting system, in addition to the conventional video-only broadcasting, text data and data such as CG can be distributed in association with each other, so that the production side can also create elaborate contents. Has the advantage that it can receive a wide variety of contents, including interactive services, from conventional services that can only be viewed. For example, as shown in FIG. 14, a plurality of data of different broadcasting systems can be mixed and broadcast in a program of one channel, and a plurality of contents of different broadcasting systems can be displayed on one screen on a receiving side. is there.

Furthermore, if a decoding software program for decoding broadcast data is distributed by broadcasting, even if the broadcast receiving apparatus does not hold a decoding software program for decoding certain broadcast data, this decoding software program can be used. Since the software program can be downloaded from the broadcast and the broadcast data can be decoded, it is not necessary for the receiving device to always hold various types of decoding software programs (libraries), and a large-capacity storage means is provided in the receiving device. There is an advantage that there is no need to provide it, and there is an advantage that it can be adapted even when a new broadcasting system is used on the program provider side.

As a form of distributing a decoding software program for decoding broadcast data by broadcasting, as shown in FIG. 15A, a decoding software program for decoding broadcast data broadcast on a channel is provided for each channel. As shown in FIG. 15 (b), a method for multiplexing a program and a dedicated channel for broadcasting only a decoding software program for decoding broadcast data are provided separately from a channel for broadcasting data. A method is conceivable in which a decoding software program for decoding broadcast data broadcast on a channel for broadcasting data is repeatedly broadcast on the program-dedicated channel.

A broadcast receiving apparatus used in a broadcast system that distributes a decode software program for decoding such broadcast data includes program storage means (library buffer) for holding a decode software program (library). Performing the decoding of the broadcast data using the decoding software program stored in the storage means, if the decoding software program for decoding the received broadcast data is not held in the program storage means,
A configuration is conceivable in which the decoding software program broadcast as described above is downloaded and used as needed.

[0008]

By the way, conventionally, an operation called "zapping" is performed in which a viewer switches channels in a short time and confirms the contents of a program being broadcast at the same time. In this "zapping", as in the case of conventional broadcasting, when all broadcasters use a single broadcast system for all channels, the program video is switched instantly even if the viewer switches the broadcast channel. However, in the case of a broadcasting system using the above-described signal processing by software, a software program for decoding broadcast data of a channel that has been switched to a channel in a broadcast receiving apparatus in advance during zapping is held. If not, there is a problem that a delay time for downloading the program is required, and it is difficult to switch channels in a short time.

For example, in the case of zapping from ch1 to ch2, the decoding software program (library) for decoding the ch1 program signal is the library A, and the libraries for decoding the ch2 program signal are the libraries B and In the case of the library D, it is necessary to download the library B and the library D when the channel is switched from ch1 to ch2, and a waiting time is generated until the screen is displayed.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and in a software broadcasting method, a download software program (library) for decoding a broadcast signal is prefetched to reduce download waiting time. It is an object of the present invention to provide a broadcast receiving apparatus capable of performing the following.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention (Claim 1) is for decoding a program signal of two or more types of broadcast systems and a broadcast program signal on a plurality of channels. In a broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method for broadcasting a decode software program, a library buffer holding a decode software program, and decode software for decoding a program broadcast on the plurality of channels Download priority determining means for determining the download priority of the decoded software program using a library EPG which is a list of programs in a matrix of channels and time; and broadcasting based on the download priority determined by the download priority determining means. Or Download decoding software programs, in which a program download means for storing in said program buffer.

Further, according to the present invention (claim 2), in the broadcast receiving apparatus according to claim 1, the download priority determining means uses the library EPG to execute each decode software program after a lapse of a predetermined time from the current time. The number of programs to be decoded is counted, and the download priority is determined based on the count result.

According to a third aspect of the present invention, in the broadcast receiving terminal device according to the second aspect, library size detecting means for detecting a size of a decode software program described in a library EPG; Further comprising free space detecting means for detecting free space, wherein the download priority determining means determines the download priority based on the count result and the detection results of the library size detecting means and the free space detecting means. It is.

According to a fourth aspect of the present invention, in the broadcast receiving terminal device according to the first aspect, the broadcast receiving terminal device further includes a viewing history holding unit that holds a past viewing history of the user, and the download priority order determining unit includes: , Library EPG
And the download priority is determined based on the viewing tendency obtained from the viewing history.

According to a fifth aspect of the present invention, in the broadcast receiving terminal device according to the fourth aspect, the download priority determining means uses the total viewing time of a channel viewed by the user as the viewing tendency. It is.

According to a sixth aspect of the present invention, in the broadcast receiving terminal device according to the fourth aspect, the download priority determining means uses the number of times of viewing of a channel viewed at the same time in the past as the viewing tendency. Things.

According to the present invention (claim 7), in the broadcast receiving terminal device according to claim 1, genre-specific program table holding means for holding a genre-specific program table in which a genre of each program is described, Genre holding means for holding the genre of the user, wherein the download priority determining means stores the library EPG, the program table by genre and the program of the user's favorite genre obtained from the user's favorite genre. The download priority is determined based on the priority.

According to the present invention (claim 8), in the broadcast receiving terminal device according to claim 1, a preset channel holding means for holding a plurality of channels preset on a remote controller for selecting a channel by a user is further provided. The download priority determining means determines the download priority based on the library EPG and the channel held in the preset channel holding means.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a diagram showing a configuration of a broadcast receiving apparatus according to a first embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a library EPG receiving unit that receives a library EPG distributed by a broadcaster, and 12 denotes a library EPG receiving unit. A library EPG analysis unit that analyzes the library EPG and controls a library reception unit described later based on the analysis result. Reference numeral 13 denotes a library receiving unit that receives a library distributed from a broadcaster, and reference numeral 14 denotes a library buffer that holds the library received by the library receiving unit. Reference numeral 15 denotes a data receiving unit that receives a broadcast signal of a program, and 16 denotes a processing unit that decodes the program signal received by the data receiving unit using a library held in a library buffer.

FIG. 2 is a diagram showing an example of the structure of a broadcast signal of a program distributed from a broadcasting company. As shown in FIG.
The header section 32 describes the name of a decoding software program (library) used for decoding the data and attribute data such as a display position and a display size of the data.
That is, the data A is decoded by using the library A, and the size on the screen at the position (X1, Y1) on the screen is (W).
1, H1). Here, since the software library A described in the header portion is a pointer indicating the library A, the entity of the library A needs to be acquired. The substance of the library A may be supplied through a CD-ROM, a hard disk, or a network. However, here, a form in which the library A is downloaded using one broadcast channel (library EPG channel) as shown in FIG. 3 is considered. . In FIG.
The entity of the library (data of the software program) used in all the channels ch1 to ch100 is distributed to the library EPG channel.

Further, the broadcast receiving apparatus according to the present embodiment provides, as shown in FIG. 4, a list showing which decoding software program (library) is used to decode a program in which channel of which channel. The library is downloaded based on a library EPG, and the data of the library EPG is also distributed on the library EPG channel. In FIG. 4, A to D are library names used in that time zone. In this example, for example, in ch1, library A is used from time T1 to T2, and library A and library B are used from time T2 to T3.

FIG. 5 is a flowchart showing an operation at the time of zapping operation in the broadcast receiving apparatus according to the first embodiment. Hereinafter, the operation of the broadcast receiving apparatus according to the present embodiment will be described with reference to FIG.

In the broadcast receiving apparatus according to the present embodiment, when zapping is started (S1), the library E
The PG analyzer 12 analyzes the library EPG data received by the library EPG receiver 11 as a list as shown in FIG. Specifically, when the current time is t, the number of libraries at the time (t + α) at which the library is actually considered necessary for zapping is counted. In FIG. 4, the number of libraries at time t + α is four for A, two for B, zero for C, and one for D. Then, the library EPG analyzer 12 determines to download the library preferentially from the larger number (S3), and outputs a control signal to the library receiver 13. The library receiving unit 13 is a library E
Based on the control signal from the PG analysis unit 12, the library is downloaded in a predetermined order indicated by the control signal (S4), and the library is stored in the library buffer 14.

For example, at time t, the user
, The library A is already stored in the library buffer. At time t + α, the priorities are in the order of A, B, D, and C. Since A is already stored in the library buffer, the download is performed within the size of the library buffer in the order of B → D → C. Is done. For example, if the library buffer has a capacity for storing two libraries, A and B are stored in the library buffer.
Will be stored. Therefore, ch3, 4, 5
Switching between channels can be done smoothly without any download time. Also, when switching to ch2, only the library D needs to be downloaded, and the time required for downloading both B and D is half as long. Also, the library buffer
If there is enough capacity to store three libraries, B, C, and D are downloaded at time t, so that the waiting time is 0 regardless of which channel is switched.

In this embodiment, the number of libraries used at a time (t + α) after a certain time has elapsed from the current time t is counted to determine the download order. Even if the used library changes, the library necessary for zapping can be efficiently prefetched. That is, when time elapses in the above example and T2 enters between time t and time t + α, and the library used in each channel changes, the library EPG analysis unit 12 counts the number of libraries after the change. Then, when the time t becomes T2, the necessary library already exists in the library buffer, so that zapping can be performed smoothly without waiting time. For example, from time T1 to T
In the case where ch1 uses both library A and library B from time T2 while ch1 to ch5 use only library A during the time period 2, the user selects ch1.
Even if it is time to zap ch1 again after time T2, the library B for decoding the broadcast signal of ch1 can be in a state already existing in the library buffer, so that there is no waiting time. Zapping can be performed smoothly.

As described above, in the broadcast receiving apparatus according to the first embodiment, a data broadcast for broadcasting a program signal of two or more types of broadcast systems and a decode software program for decoding a broadcasted program signal on a plurality of channels. In a broadcast receiving apparatus for receiving a broadcast signal broadcast by the method, a decoding software program for decoding a program broadcast on the plurality of channels is decoded using a library EPG which is a list showing a matrix of channels and time. The library EPG analysis unit 12 for determining the download priority of the software program is provided, and the decoding software program is downloaded from the broadcast based on the download priority determined by the library EPG analysis unit 12. It is possible to shorten the download waiting time, it is possible to realize a broadcasting reception means capable of pleasant zapping.

In the above embodiment, the library and the library EPG data have been described as being distributed on an independent channel different from the channel for distributing the broadcast signal of the program. The program may be multiplexed and broadcast in an empty area of the channel, or may be downloaded through package media or a network.

Further, each of the libraries described here may be one complete program, or may exist in the form of a dynamic link library. If the library EPG includes size information of each library, the library EPG analysis unit 12
However, the size of the library and the size of the free area of the library buffer may be detected, and the download priority may be determined so as to effectively use the library buffer.

FIG. 11 shows the size of such a library,
FIG. 9 is a flowchart showing an operation in a case where download priorities are determined in consideration of the size of a free area of a library buffer.

When the zapping is started (S1), the library EPG analyzer 12 analyzes the library EPG data received by the library EPG receiver 11 in a list (S2). For example, assuming that there is a library EPG as shown in FIG. 10, when the number of libraries used at time t is counted, library A is 2, library B is 3, library C is 3, library D is 2, and library E is 2 , Library F is 1. Here, as a priority, for example, when ch1 is viewed, library A and library B are both present in the library buffer, and library C has the first priority.
The libraries D and E have the second priority, and the library F has the third priority. Next, the size of the library and the size of the empty area of the library buffer are detected, and these are compared (S3). The size of the library C is, for example, 100 Kbytes, and the libraries D, E,
Assume that the size of F is, for example, 20 Kbytes, and the free area of the library buffer is 110 Kbytes. Then, when library C is downloaded, the area is occupied by one, but with D, E, and F, three libraries can be downloaded. The channels using the library C are ch2, ch4, ch
Although there are 5 and 3 channels, all of them cannot be viewed even if only the library C is downloaded, but when the libraries D, E, and F are downloaded, the channel 3 can be viewed. Therefore, if the library EPG analysis unit 12 determines the download priority in consideration of the library size and the size of the empty area of the buffer (S4) and downloads the library (S5), the library EPG analysis unit 12 can perform the zapping. This makes it possible to more effectively shorten the download waiting time and realize a broadcast receiving means capable of comfortable zapping.

Embodiment 2 (A library is prefetched by analyzing a viewing tendency from a past viewing history) Next, a broadcast receiving apparatus according to a second embodiment of the present invention will be described. FIG. 6 is a diagram showing a configuration of a broadcast receiving apparatus according to Embodiment 2 of the present invention. In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. The channel number watched by the user is recorded together with the viewing date and time, such as "I watched from XX hours to XX hours". Also,
FIG. 9 is a flowchart showing an operation at the time of zapping operation in the broadcast receiving apparatus according to the second embodiment.

The operation of the broadcast receiving apparatus according to the second embodiment will be described below. In the second embodiment as well, it is assumed that the program signal, the decoding software program, and the library EPG data are distributed in the same manner as in the first embodiment.

In the second embodiment, the library EPG analysis unit 12 calculates the total viewing time of each channel obtained from the user's viewing information stored in the user information management unit 17 and the program of which time zone of which channel. The priority of a library to be downloaded is determined based on library EPG data indicating which decoding software program (library) is to be used for decoding.

For example, when the library EPG received by the library EPG receiving unit 11 is as shown in FIG.
When zapping is started at time t in FIG. 4 (S1), the library EPG analysis unit 12 analyzes the library EPG and user information (S2), and determines the download priority (S3). That is, the time (t + α) at which the library is actually considered necessary for zapping
The library EPG detects the library necessary for decoding the program signal of each channel in the above, and the user's viewing information stored in the user information management unit 17 is used to determine the library of each channel within a predetermined time in the past (for example, the last one week). The total viewing time is obtained, and the library detected by the library EPG is downloaded in order from the channel having the highest total viewing time. Specifically, FIG. 7 shows the cumulative viewing time of each channel within a predetermined time in the past (for example, the latest one week) obtained from the user viewing information stored in the user information management unit 17 at time t. The operation when zapping is started while watching ch1 is as follows. That is, the total viewing time within the predetermined time is shown in FIG.
, The priorities are ch5, ch3, c
h2, ch4. The library used in ch5 is A, and since ch1 is viewed at time t, library A already exists in the buffer. The libraries used in ch3 are A and B. Therefore, B is the top library download priority. Since B2 and D are used for ch2, the next rank is D. That is, priorities are determined in the order of B → D, and prefetch is performed according to the buffer capacity.

As described above, according to the present embodiment, within a certain period of time, the total number of channels watched by the user is compared, and the broadcast signal of the channel is preferentially decoded from the channel having the larger total time. Since the download priority is determined so that the library is downloaded, the user can switch between several channels of his / her preference and watch (zapping).
In such a case, the download waiting time during zapping can be shortened, and a broadcast receiving means capable of comfortable zapping can be realized.

In the second embodiment, the total number of channels watched by the user within a certain period of time is compared.
Although the library for decoding the broadcast signal of the channel with a higher cumulative time is downloaded preferentially has been described, the priority is determined based on the number of times the channel has been viewed at the same time in the past. It may be.

When the priority order is determined based on the number of times of viewing of the channel watched at the same time in the past, assuming that the time currently being viewed is t, t + α at yesterday and t at two days before
The number of times the channel has been viewed at t + α in the past, such as at + α, is counted. For example, assuming that the number of times of viewing is as shown in FIG. 8, the priority order of the channels is in the order of ch3 → ch2 → ch1 → ch5 → ch4. In the library EPG of FIG. 4, the libraries used for ch3 are A and B, the ch2 is B and D,
1 is A, and ch5 and ch4 are also A. Therefore, library download priority is in the order of B → D,
At time t, prefetch is performed according to the buffer capacity.

As described above, if the priority is determined based on the number of times of viewing of the channel watched at the same time in the past, especially when the user watches a certain program at a certain time (performs zapping), the zapping is performed. Broadcast receiving means capable of shortening the download waiting time and capable of comfortable zapping can be realized.

In a system in which a genre-based program schedule describing the genre of each program is distributed, a user's favorite genre is set in advance or is inferred from past viewing conditions, and the user selects the favorite genre. May be used to extract a channel being broadcast and prefetch a library used for that channel. In this case, the user information management unit 17 holds and manages a program schedule by genre and a genre that the user likes.

As a method of estimating a favorite genre,
The total viewing time of the genre that the user has viewed in the past is calculated using the genre-based program schedule, and the order of the favorite genre is determined from the one with the larger total time.

When determining the download priority,
The genre of the program being broadcast at t + α is searched from the genre-based program schedule table, and the rank of the channel that broadcasts a favorite genre having a high rank is determined. Then, a library to be preferentially downloaded is determined using the library EPG.

For example, when the genres defined in the genre-based program schedule are P, Q, R, and S, it is assumed that S, R, Q, and P are arranged in descending order of viewing time. When the broadcast genre is searched at t + α using the genre-based program schedule, the content of the genre S is broadcast on ch1 and ch4, and the genre R is ch.
3. It is assumed that genre Q is broadcast on ch2 and genre P is broadcast on ch5. Then, the order of the channel is ch1,
ch4, ch3, ch2, ch5. The library download priority is in the order of B and D. At time t, the library is prefetched according to the buffer capacity.

By determining the priority order based on the favorite genre in this way, especially when the user frequently views (zapps) the channel of the favorite genre, the download waiting time at the time of zapping is reduced. Broadcast receiving means capable of comfortable zapping.

The user information management unit 17 receives the genre-based program schedule in the library EPG receiving unit 11 instead of holding and managing the genre-based program schedule and the genre of the user's preference. Part 12
The processing of the program schedule table for each genre may be performed.

In addition, periodically, the above-mentioned several types of priority determination methods based on the past user's channel switching information, that is, priority determination based on the total viewing time within a certain period of time, and viewing at the same time in the past. By simulating the priority determination based on the number of times of viewing of the channel and the priority determination based on the favorite genre, a configuration that automatically selects a method most suitable for the user may be adopted. For example, library prefetch with a higher hit rate can be realized.

If the user can preset a channel to be mainly viewed by the user in advance on the remote control button, information on the preset is stored in the user information management unit 17 and the library EPG analysis unit 12 The download priority may be determined so that the library used in the preset channel is preferentially prefetched. If the priority is determined based on the channel preset on the remote control, the download waiting time during zapping can be reduced, especially when the user zapps with the remote control with the preset channel,
Broadcast receiving means capable of comfortable zapping can be realized.

[0047]

As described above, according to the broadcast receiving apparatus of the present invention (claim 1), it is possible to decode a program signal of two or more types of broadcast systems and a broadcast program signal on a plurality of channels. In a broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method for broadcasting a decode software program, a library buffer holding a decode software program, and decode software for decoding a program broadcast on the plurality of channels Download priority determining means for determining the download priority of the decoded software program using a library EPG which is a list of programs in a matrix of channels and time; and broadcasting based on the download priority determined by the download priority determining means. From A program download means for downloading the code software program and storing it in the program buffer is provided, so that a download waiting time at the time of zapping can be reduced, and a broadcast receiving means capable of comfortable zapping is realized. There is an effect that can be done.

According to the broadcast receiving apparatus of the present invention (claim 2), in the broadcast receiving apparatus of claim 1,
The download priority determining means is a library EP.
G is used to count the number of programs decoded using each decoding software program after a lapse of a predetermined time from the current time, and the download priority is determined based on the count result. Even when the library to be used changes, the download waiting time at the time of zapping can be shortened, and there is an effect that a broadcast receiving means capable of comfortable zapping can be realized.

According to the broadcast receiving apparatus of the present invention (claim 3), in the broadcast receiving terminal apparatus of claim 2, library size detection for detecting the size of the decode software program described in the library EPG. Means, and free space detecting means for detecting the free space of the library buffer, wherein the download priority determining means determines the free space based on the count result and the detection result of the library size detecting means and the free space detecting means. Since the download priority is determined, the download waiting time during zapping can be effectively shortened, and there is an effect that a broadcast receiving means capable of comfortable zapping can be realized.

[0050] According to the broadcast receiving apparatus of the present invention (claim 4), the broadcast receiving terminal device of claim 1 further comprises viewing history holding means for holding a past viewing history of the user, Since the download priority determining means determines the download priority based on the viewing tendency obtained from the library EPG and the viewing history, the download waiting time during zapping can be effectively reduced according to the user's viewing tendency. This has the effect of realizing a broadcast receiving means capable of comfortable zapping.

According to the broadcast receiving device of the present invention (claim 5), in the broadcast receiving terminal device of claim 4, the download priority order determining means determines the channel viewed by the user as the viewing tendency. Since the total viewing time is used, especially when the user views (zapping) while repeatedly switching his or her favorite channels, the download waiting time during zapping can be shortened, and comfortable zapping can be achieved. There is an effect that a possible broadcast receiving means can be realized.

According to the broadcast receiving device of the present invention (claim 6), in the broadcast receiving terminal device of claim 4, the download priority determining means sets the viewing tendency as the viewing tendency at the same time in the past. Since the number of times the channel has been viewed is used, especially when the user watches a fixed program at a fixed time (zapping), the download waiting time during zapping can be reduced, and zapping can be performed comfortably. This has the effect of realizing a simple broadcast receiving means.

Further, according to the broadcast receiving apparatus of the present invention (claim 7), in the broadcast receiving terminal device of claim 1, the genre-specific program table that stores the genre of each program is stored. A program genre holding means, and a genre holding means for holding a user's favorite genre, wherein the download priority determining means determines a user obtained from the library EPG, the genre-based program guide, and the user's favorite genre. Since the download priority is determined based on the program of the favorite genre, the download waiting time at the time of zapping can be reduced especially when the user frequently views (zapps) the channel of the favorite genre. Therefore, there is an effect that a broadcast receiving unit capable of comfortable zapping can be realized.

According to the present invention (claim 8), the broadcast receiving terminal device according to claim 1 further comprises a preset channel holding means for holding a plurality of channels preset on a remote controller by which a user selects a channel. Since the download priority determining means determines the download priority based on the library EPG and the channel held in the preset channel holding means, especially when the user zapps with a remote controller that presets the channel. In addition, there is an effect that the download waiting time at the time of zapping can be shortened, and a broadcast receiving unit capable of comfortable zapping can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a broadcast receiving device according to a first embodiment.

FIG. 2 is a diagram illustrating an example of a configuration of a broadcast signal of a program distributed from a broadcaster;

FIG. 3 is a diagram for explaining a library EPG channel.

FIG. 4 is a diagram showing an example of a library EPG used in the present invention.

FIG. 5 is a flowchart for explaining the operation of the broadcast receiving apparatus according to the first embodiment.

FIG. 6 is a block diagram showing a configuration of a broadcast receiving device according to a second embodiment.

FIG. 7 is a diagram showing an example of user information used in the broadcast receiving device according to the second embodiment.

FIG. 8 is a diagram showing another example of user information used in the broadcast receiving device according to the second embodiment.

FIG. 9 is a flowchart for explaining the operation of the broadcast receiving device according to the second embodiment.

FIG. 10 is a diagram showing an example of a library EPG used in the present invention.

FIG. 11 is a flowchart showing an operation when determining a download priority in consideration of a library size and a size of a free area of a library buffer.

FIG. 12 is a diagram showing a configuration of a broadcasting system using a broadcasting satellite.

FIG. 13 is a diagram showing an example of data broadcasted from a broadcaster in a conventional broadcasting system and a screen display of a broadcast receiving device receiving the data.

FIG. 14 is a diagram showing an example of data broadcasted from a broadcaster in a broadcast system using signal processing by software and a screen display of a broadcast receiving device receiving the data.

FIG. 15 is a diagram illustrating an example of a mode of distributing a decoding software program for decoding broadcast data by broadcasting.

[Explanation of symbols]

 11 Library EPG receiving unit 12 Library EPG analyzing unit 13 Library receiving unit 14 Library buffer 15 Data receiving unit 16 Processing unit 17 User information management unit

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kenjiro Tsuda 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Hiroshi Nio 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Etsumi Sakaguchi 1006 Odaka Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] Broadcast reception for receiving a broadcast signal broadcast by a data broadcasting method for broadcasting a program signal of at least two types of broadcast systems on a plurality of channels and a decode software program for decoding the broadcast program signal. In the apparatus, a library buffer for holding a decoding software program, and a library EPG which is a list showing a decoding software program for decoding programs broadcast on the plurality of channels in a matrix of channels and time
Download priority determining means for determining the download priority of the decoding software program using the program; and a program for downloading the decoding software program from the broadcast based on the download priority determined by the download priority determining means and storing the decoded software program in the program buffer. A broadcast receiving apparatus comprising: a download unit. 2. The broadcast receiving apparatus according to claim 1, wherein said download priority determining means includes a library EP.
G is used to count the number of programs decoded using each decoding software program after a lapse of a predetermined time from the current time, and determine a download priority based on the count result. Broadcast receiver. 3. The broadcast receiving terminal device according to claim 2, wherein a library size detecting means for detecting a size of the decoding software program described in the library EPG, and a free capacity detecting means for detecting a free capacity of the library buffer. And the download priority determining means determines the download priority based on the count result and the detection results of the library size detecting means and the free space detecting means. apparatus. 4. The broadcast receiving terminal device according to claim 1, further comprising a viewing history holding unit for holding a past viewing history of the user, wherein said download priority order determining unit includes a library EP.
A broadcast receiving apparatus for determining a download priority based on G and a viewing tendency obtained from the viewing history. 5. The broadcast receiving terminal according to claim 4, wherein said download priority determining means uses a cumulative viewing time of a channel viewed by a user as said viewing tendency. 6. The broadcast receiving terminal according to claim 4, wherein the download priority determining means uses the number of times of viewing of a channel viewed at the same time in the past as the viewing tendency. 7. The broadcast receiving terminal device according to claim 1, wherein a genre-based program table holding means for holding a genre-based program table in which a genre of each program is described, and a genre holding for holding a user's favorite genre. Means, and the download priority order determining means comprises a library EP.
A broadcast receiving apparatus for determining a download priority based on a program of a user's favorite genre obtained from G, the program table by genre and the user's favorite genre. 8. The broadcast receiving terminal device according to claim 1, further comprising: preset channel holding means for holding a plurality of preset channels on a remote controller for selecting a channel by the user; , Library EP
A broadcast receiving apparatus for determining a download priority based on G and a channel held in the preset channel holding means.