JPH1132307A - Broadcast receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the down-load waiting time of a broadcast receiver by down-loading a data software program which is not held from broadcasting, and storing it in a program buffer. SOLUTION: A library check part 18 detects the name of a library to be used for decoding the data of a program related with the channel of a cell instructed by a cursor and a cell adjacent to this cell from the data of an electric program guide (EPG). Then, when this library is not held in a library buffer 15, a library receiving part 16 is controlled so that a library which is not held in the library buffer 15 can be received. The library receiving part 16 down- loads the library which is not held in the library buffer 15 from broadcasting, and stores this in the library buffer 15 according to the control of the library check part 18.

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. 15 is a diagram showing a configuration of a broadcasting system using a broadcasting satellite.
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. 17, a plurality of data of different broadcasting systems may be mixed and broadcast in one channel program, and a plurality of contents of different broadcasting systems may be displayed on one screen on the 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 delivering a decoding software program for decoding broadcast data by broadcasting, as shown in FIG. 18A, broadcast data for decoding broadcast data broadcast on a channel is transmitted for each channel. A method for multiplexing and decoding a decoding software program for decoding, or a program for broadcasting only a decoding software program for decoding broadcast data separately from a channel for broadcasting data as shown in FIG. A method is conceivable in which a dedicated channel is provided and a decoding software program for decoding broadcast data broadcast on a channel for broadcasting broadcast 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]

As a system for selecting a reception channel in a broadcast receiving apparatus, an electric program (EPG) provided by being superimposed on a program broadcast or the like is provided.
am guide) Based on the data, on the display screen
A channel number is displayed on each of a plurality of cells arranged in a matrix as shown in FIG. 2 and an EPG screen is displayed, and a cursor displayed on this EPG screen (in FIG. 2, the cell of ch8 is indicated). Is moved up, down, left, right, and diagonally by a remote controller having key buttons as shown in FIG. 3, and a channel designated by a cursor is selected and received by pressing a selection button or the like. The channel selection system using the EPG allows a user to select a channel by moving a cursor with a simple button operation, and also allows the user to set, for example, only his / her favorite channel on a display screen. Since the collected EPG screen can be displayed, the system is convenient for the user.

At the time of channel selection using such an EPG, if all broadcasters use a single broadcast system for all channels, as in the case of conventional broadcasting, the viewer must select a channel. Then, the program video is displayed instantaneously. However, in the case of a broadcasting system using the signal processing by the software described above, when the channel is selected using the EPG, the broadcast data of the channel previously selected by the broadcast receiving device is transmitted to the broadcast receiving device. If a software program for decoding is not held, a delay time for downloading the program is required, and there is a problem that a program video may not be easily displayed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem. In a broadcast receiving apparatus for receiving a broadcast signal of a software broadcast system, in which a channel is selected using an EPG, a download waiting time is reduced. It is an object of the present invention to provide a broadcast receiving apparatus that can reduce the number of broadcast receiving apparatuses.

[0011]

In order to solve the above-mentioned problems, a broadcast receiving apparatus according to the present invention (Claim 1) comprises a program signal of two or more types of broadcast systems on a plurality of channels and a program to be broadcast. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method for broadcasting a decoding software program for decoding a signal, comprising: selecting a reception channel by selecting a plurality of cells corresponding to each of the plurality of channels by m On an EPG screen arranged in a matrix of × n (m and n are positive integers), any one of the plurality of cells is changed from one cell to one of cells adjacent thereto by one remote control operation. A library bar that holds a decoding software program, which is selected by selecting with a cursor that can be moved to cells one by one. And whether or not a decoding software program for decoding a program broadcast on a cell on which the cursor is located on the EPG screen and a cell adjacent to the cell on the EPG screen is held in the library buffer. And a program download unit that downloads, from the broadcast, the data software program that is not stored when the data software program is not stored, and stores the data software program in the program buffer.

Further, the broadcast receiving apparatus according to the present invention (claim 2) broadcasts a program signal of at least two types of broadcast systems on a plurality of channels and a decode software program for decoding the broadcasted program signal. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method, wherein a receiving channel is selected by selecting a plurality of cells corresponding to each of the plurality of channels by m × n (m and n are positive integers). On the EPG screen arranged in a matrix by selecting one of the above-mentioned cells with a cursor which can be moved one by one to one of the adjacent cells from one cell by a single remote control operation. A library buffer for holding a decoding software program;
When the cursor moves from a first cell of the plurality of cells to a second cell adjacent to the second cell on the screen, the second cell and the second cell adjacent to the second cell are moved to the second cell. A third cell present in the direction of movement from the first cell to the second cell, and the second cell adjacent to the third cell and
It is detected whether or not a decoding software program for decoding a program broadcast on the channels of the fourth and fifth cells adjacent to the cell is stored in the library buffer. Program download means for downloading the data software program not held from the broadcast and storing it in the program buffer.

[0013] Further, the broadcast receiving apparatus according to the present invention (claim 3) broadcasts a program signal of two or more types of broadcast systems on a plurality of channels and a decode software program for decoding the broadcasted program signal. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method, wherein a receiving channel is selected by selecting a plurality of cells corresponding to each of the plurality of channels by m × n (m and n are positive integers). On the EPG screen arranged in a matrix by selecting one of the above-mentioned cells with a cursor which can be moved one by one to one of the adjacent cells from one cell by a single remote control operation. In which the broadcasted program signal is decoded using the same decoding software program Cell is one that has a display control means for performing display control of the EPG screen as arranged clustered in EPG screen.

Further, the broadcast receiving apparatus according to the present invention (claim 4) broadcasts a program signal of two or more types of broadcast systems and a decode software program for decoding the broadcasted program signal on a plurality of channels. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method, wherein a receiving channel is selected by selecting a plurality of cells corresponding to each of the plurality of channels by m × n (m and n are positive integers). On the EPG screen arranged in a matrix by selecting one of the above-mentioned cells with a cursor which can be moved one by one to one of the adjacent cells from one cell by a single remote control operation. A library buffer for holding a decoding software program and a broadcast program signal Cell channel to be decoded using the decoding software program stored in the library buffer is one that has a display control means for performing display control of the EPG screen as arranged clustered in EPG screen.

Further, the broadcast receiving apparatus according to the present invention (claim 5) broadcasts a program signal of two or more types of broadcast systems on a plurality of channels and a decode software program for decoding the broadcasted program signal. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method, wherein a receiving channel is selected by selecting a plurality of cells corresponding to each of the plurality of channels by m × n (m and n are positive integers). E recursively arranged in the matrix of
The smallest unit selected by displaying the PG screen on the display screen and selecting the input key of the remote controller having the input keys of the m × n matrix structure once less than the number of recursions of the cell arrangement of the EPG screen A decoding software program is held by selecting one of the cells arranged in an m × n matrix by an input key at a corresponding position of a remote controller having an input key having an m × n matrix structure. A library buffer,
On the EPG screen, press the input key of the remote
Decoding software for decoding a program broadcast on a channel of a cell arranged in an m × n matrix of the selected minimum unit at the time of selecting the number of times less than the number of recursions of the cell array of the PG screen. Program download means for detecting whether the program is held in the library buffer, and when not held, downloading the data software program not held from the broadcast and storing the data software program in the program buffer. Things.

[0016]

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 the figure, reference numeral 11 denotes a data receiving unit that receives a broadcast signal of a program distributed from a broadcaster. Here, a program signal distributed from a broadcaster includes a data section and a header section, and the header section includes:
Attribute data such as the name of a decoding software program (library) used for decoding the data is described. Reference numeral 12 denotes a header separating unit that separates a header part and a data part of the program signal received by the data receiving unit 11, outputs the header part to a library control unit 14 described later, and outputs the data part to a data processing unit 13 described later. It is. 16 is a decoding software program (library) for decoding program signal data from a broadcast signal
Is a library receiving unit. The library control unit 14 detects a library name for decoding program signal data from the header obtained from the header separation unit 12, and checks whether or not this library is stored in the library buffer. Reference numeral 15 denotes a library buffer that holds a library received by the library receiving unit 16. The data processing unit 13 decodes the data output from the header separation unit 12 using the library held in the library buffer 15. Reference numeral 17 denotes an EPG receiving unit which receives EPG (electric program guide) data used for channel selection on the broadcast receiving device side. Where EPG
It is assumed that the data describes the name of a library used to decode the data of the program of each channel. Reference numeral 18 denotes a library check unit that compares the name of a library used for decoding program signal data of each channel described in EPG data with the library held in the library buffer 15. Reference numeral 19 denotes a display control unit for controlling the display of the EPG screen on the display screen.

FIG. 5A is a flowchart for explaining the operation of the broadcast receiving apparatus according to the first embodiment. Hereinafter, the operation of the broadcast receiving apparatus according to the first embodiment will be described with reference to FIG.

In the broadcast receiving apparatus according to the present embodiment, selection of a receiving channel is performed using, for example, an EPG screen 20 as shown in FIG. When the user operates the remote controller to enter the reception channel selection mode (S1), the display controller 19 displays a plurality of channels as shown in FIG. 2 on the display screen based on the EPG data received by the EPG receiver. An EPG screen in which a plurality of cells 21 corresponding to each are arranged in a matrix is displayed. On the EPG screen 20, a cursor 22 for indicating a cell is also displayed.
FIG. 2 shows that the cursor 22 points to ch8.

Although FIG. 2 shows a case where only the channel number is displayed in the cell 21, information on a program currently broadcast on each channel is displayed in each cell 21 together with the channel number. It may be.

The display control unit 19 detects which cell the cursor points to (S2) and provides this information to the library check unit 18. The library check unit 18 determines, based on information on which cell the cursor points to,
The cell indicated by the cursor and the cell adjacent to this cell, that is, in the example of FIG. 2, the cell of ch8 and 8 of ch1, 2, 3, 7, 9, 13, 14, and 15 adjacent to this cell
With respect to the channels of one cell, the name of the library used to decode the program data of these channels is detected from the EPG data (S3). Then, it is checked whether or not these libraries are stored in the library buffer 15 (S4). If the libraries are not stored in the library buffer 15, the library is set so as to receive the libraries not stored in the library buffer 16. The receiving unit 16 is controlled. The library receiving unit 16 downloads the library not held in the library buffer 16 from the broadcast according to the control of the library checking unit 18 from the broadcast (S5), and stores it in the library buffer 16.

As shown in FIG. 2, a plurality of cells corresponding to a plurality of channels are arranged in a matrix.
On the PG screen 20, when one of a plurality of input keys 30 indicating a cursor moving direction (up, down, left, right, and diagonal directions) of the remote controller as shown in FIG. When selecting a receiving channel using a cursor that moves one by one to a cell in the movement direction indicated by the input key, for example, as shown in FIG. 2, assuming that the cursor 22 is at the position of ch8, one input key The cells 21 to which the cursor 22 can be moved by pressing are ch1, 2, 3, 7, 9, 13, 1
There are eight cells, 4,15. Therefore, the cursor moves to ch
When the cursor is at position 8, it can be said that there is a high possibility that the cursor moves to any of these eight cells and the channel to which the cursor has moved is selected. As described above, the broadcast receiving apparatus according to the present embodiment detects the cell indicated by the cursor on the EPG screen, and stores the library used in the channel of this cell and the channel of the cell adjacent to this cell in the library buffer. It checks whether or not it is stored in the library, and if it is not stored, it downloads the library that is not stored from the broadcast and stores it in the library buffer, so it is used on the channel that is likely to be selected. Downloading of a library that is not held in the library buffer is started prior to selection of a reception channel, and the download waiting time of a broadcast receiving apparatus that performs channel selection using the EPG can be reduced.

As described above, in the broadcast receiving apparatus according to the present embodiment, the selection of the receiving channel is performed by selecting one of the plurality of cells on the EPG screen in which the plurality of cells corresponding to the plurality of channels are arranged in a matrix. In which one cell is selected from one cell to one of the cells adjacent thereto by a single remote control operation using a cursor that can be moved one by one.
It is detected whether or not a decoding software program for decoding a program broadcast on a cell where the cursor is located on the screen and a channel of a cell adjacent to the cell is held in the library buffer, and is held. When there is no data software program that is not stored, the program is provided with means for downloading from the broadcast and storing the data software program in the library buffer, so that the download waiting time of the broadcast receiving apparatus that performs channel selection using the EPG is reduced. be able to.

In the description of the above embodiment, the EPG
Describes the name of the library used to decode the data of the program of each channel in the data of the channel. Based on the information on which cell the cursor points to, the library check unit 18 executes A description has been given of the case where the name of a library used for decoding program data of a cell in a cell adjacent to this cell and a cell adjacent to this cell is detected from EPG data.
If the name of the library used to decode the data of the program of each channel is not described in the EPG data, the data receiving unit 11 indicates the cursor based on the information indicating which cell the cursor points to. The cell of the cell and the cell adjacent to this cell are sequentially switched and received, and the header separation unit 12 separates the header part of the program signal of each channel and outputs it to the library control unit 14. Detects the library name for decoding the data of the program signal by decoding the header part of the program signal of each channel, checks whether these libraries are stored in the library buffer 15, and If the data is not stored in the buffer 15, the data is stored in the library buffer 16. It may be so controls the library receiver 16 to receive the library not,
The same effects as in the above embodiment can be obtained.

Also, in the above embodiment, the EPG screen is shown in which the cells for displaying the channels are arranged in a 6 × 4 matrix, but the cells for displaying the channels in the EPG screen are m × n (m and n is a positive integer)
What is necessary is just to arrange | position in the matrix shape of this.

Embodiment 2 In the broadcast receiving apparatus according to the first embodiment, the cursor position on the EPG screen is detected, and the library used by these channels for the cell indicated by the cursor and all the channels of the cells adjacent to the cell is stored in the library. It is checked whether or not the library is held in the buffer, and the library not held is downloaded from the broadcast. However, the broadcast receiving apparatus according to the second embodiment detects the movement of the cursor position on the EPG screen, The cell after the cursor movement, the cell adjacent to this cell existing in the cursor movement direction, and the cell adjacent to this cell and also adjacent to the cell after the cursor movement, are defined by these channels. Check whether the library used is stored in the library buffer. It is to download the library from the broadcast.

The configuration of the broadcast receiving apparatus according to the second embodiment of the present invention is the same as that of the broadcast receiving apparatus according to the first embodiment of the present invention shown in FIG. FIG. 5B shows the first embodiment.
FIG. 4 is a flowchart for explaining the operation of the broadcast receiving apparatus according to the first embodiment. Hereinafter, the operation of the broadcast receiving apparatus according to the first embodiment will be described with reference to FIG.

In the broadcast receiving apparatus according to the present embodiment, when the user operates the remote controller to enter the receiving channel selection mode (S1), the display control section 19 displays based on the EPG data received by the EPG receiving section. An EPG screen 20 in which a plurality of cells respectively corresponding to a plurality of channels are arranged in a matrix as shown in FIG. 4 is displayed on the screen. On the EPG screen 20, a cursor 22 for indicating a cell is also displayed.

The user moves the cursor 22 displayed on the EPG screen 20 using, for example, a remote controller having input keys 30 as shown in FIG. The cursor 22 located at the position of ch8 in the initial state of the reception channel selection mode is moved to the position c by remote control operation as shown in FIG.
Assume that the cell has moved to the cell at h15. The display control unit 19 detects the cell to which the cursor has moved and the moving direction of the cursor (here, the lower right direction) (S2), and provides this information to the library check unit 18. Based on the information from the display control unit 19, the library check unit 18 determines, based on the information from the display control unit 19, the cell to which the cursor has moved (the cell of ch15) and, of the cells adjacent to this cell, the cell (c
h22 cell), and adjacent to this ch22 cell,
In addition, for the channels of the cells (cells of ch16 and ch21) adjacent to the cell (cell of ch15) to which the cursor has moved, the name of the library used to decode the program data of these channels is EP.
Detection is performed from the G data (S3). Then, it is checked whether or not these libraries are stored in the library buffer 15 (S4). If the libraries are not stored in the library buffer 15, the library buffer 1 is checked.
The library receiving unit 16 is controlled so as to receive the library not held in the library 6. The library receiving unit 16 downloads the library not held in the library buffer 16 from the broadcast according to the control of the library check unit 18 from the broadcast (S5), and downloads the library from the library buffer 1
6 is stored.

On an EPG screen 20 in which a plurality of cells 21 respectively corresponding to a plurality of channels are arranged in a matrix as shown in FIG. 4, a cursor movement direction (up, down, left, right and diagonal directions) of a remote control as shown in FIG. ) Is selected by a cursor which is moved one by one from one cell to a cell in the movement direction indicated by the input key of the remote control from one cell by pressing any of the plurality of input keys 30 indicating the reception channel. If the cursor is moved from ch8 to ch15 by a user's remote control operation as shown in FIG. 4, for example, the cells to which the cursor can be moved by pressing the input key once are ch8, 9, 10,. 14, 16, 20, 21, 22
8 cells. Here, the cursor moves from ch8 to c.
Considering that the vehicle has moved to h15, it is considered that there is little chance that the vehicle will return to ch8 again.
If it is necessary to move to ch4, it is only necessary to move directly from ch8, so it is considered that the probability of moving to ch9 or ch14 is low. If it is necessary to move to ch10, it moves from ch8 → ch9 → ch10 and moves to ch20. If so, it is normal to move from ch8 to ch14 to ch20, and it is considered that the probability of moving to ch10 or ch20 is relatively low. Conversely, when the cursor moves from ch8 to ch15, of the cells adjacent to ch15, the cell existing in the cursor moving direction (the cell of ch22) and this ch.
The cursor moves to any of the cells (cells of ch16 and ch21) adjacent to the cell 22 and to which the cursor has moved (the cell of ch15) and the channel to which the cursor has moved is selected. Can be considered to be high. In the broadcast receiving apparatus according to the present embodiment, as described above, the movement of the cursor on the EPG screen is detected, and the cell to which the cursor has moved,
And the cell of the cell adjacent to the cell in the moving direction of the cursor and the cell of the cell adjacent to the cell existing in the moving direction and also adjacent to the cell to which the cursor has moved. It is checked whether or not the library used in the channel of the cell and the channel of the cell adjacent to this cell is held in the library buffer. If the library is not held, the library not held is downloaded from the broadcast and the library is Since the data is stored in the buffer, the download of the library used for the channel which is likely to be selected and which is not held in the library buffer is started prior to the selection of the reception channel. Down the broadcast receiver to select the channel using It is possible to reduce the over-de-latency.

As described above, in the broadcast receiving apparatus according to the present embodiment, the selection of the receiving channel is performed by selecting one of the plurality of cells on the EPG screen in which the plurality of cells corresponding to the plurality of channels are arranged in a matrix. In which one cell is selected from one cell to one of the cells adjacent thereto by a single remote control operation using a cursor that can be moved one by one.
Of the cell to which the cursor has moved on the screen and the cell adjacent to this cell, the cell existing in the direction of cursor movement, and the cell adjacent to the cell existing in this direction of movement and to which the cursor has moved It also detects whether or not a decoding software program for decoding a program broadcast on a channel of an adjacent cell is held in the library buffer, and when the decoding software program is not held, the data software program which is not held Is downloaded from the broadcast and stored in the library buffer, so that the download waiting time of the broadcast receiving apparatus for selecting a channel using the EPG can be reduced.

In the description of the above embodiment, the EPG
Describes the name of the library used to decode the data of the program of each channel in the data of the channel. Based on the information on which cell the cursor points to, the library check unit 18 executes A description has been given of the case where the name of a library used for decoding program data of a cell in a cell adjacent to this cell and a cell adjacent to this cell is detected from EPG data.
If the name of the library used to decode the data of the program of each channel is not described in the EPG data, the data receiving unit 11 moves the cursor based on the information on which cell the cursor points to. Of the cell at the destination and the cell adjacent to this cell, the cell existing in the movement direction of the cursor, and the cell adjacent to the cell existing in this movement direction and also adjacent to the cell to which the cursor has moved. The channels are sequentially switched and received, and the header separating section 12 separates the header of the program signal of each channel and outputs it to the library control section 14, which decodes the header of the program signal of each channel. By detecting the library name for decoding the data of the program signal, If the library is not held in the library buffer 15, the library receiving unit 16 is controlled to receive the library not held in the library buffer 16 if the library is not held in the library buffer 15. Often, the same effects as in the above embodiment can be obtained.

In the above-described embodiment, the EPG screen has been described in which the cells for displaying the channels are arranged in a 6 × 4 matrix, but the cells for displaying the channels on the EPG screen are m × n (m and n). n is a positive integer)
What is necessary is just to arrange | position in the matrix shape of this.

Embodiment 3 FIG. 6 is a diagram showing an example of an EPG screen displayed on the display screen by the broadcast receiving device according to the third embodiment of the present invention. As shown in the figure, in the broadcast receiving apparatus according to the third embodiment, the library used for the channel displays the same channel on the EPG screen. The configuration of the broadcast receiving apparatus according to the third embodiment of the present invention is the same as that of the broadcast receiving apparatus according to the first embodiment of the present invention shown in FIG.

In the broadcast receiving apparatus according to the third embodiment,
If the name of the library used to decode the program data of each channel is described in the EPG data received by the EPG receiving unit 17, the display control unit 19
Detects the library used for each channel from the EPG data, performs display control so that the channels using the same library are displayed collectively on the EPG screen, and displays the EPG screen 20 as shown in FIG. Display on the screen. If the name of the library used to decode the data of the program of each channel is not described in the data of the EPG, the data receiving section 11 sequentially receives and switches all the channels and separates the header from each program signal. The section 12 separates the header of the program signal of each channel and outputs it to the library control section 14. The library control section 14 decodes the header of the program signal of each channel to decode the data of the program signal. The display control unit 19 detects the library name for the EPG, and performs display control based on the detection result so that the channels using the same library are displayed collectively on the EPG screen, as shown in FIG. The screen 20 is displayed on the display screen.

As described above, in the third embodiment, the channels using the same library are displayed on the EPG screen in a stacked manner. Therefore, when selecting a channel on the EPG screen, one channel is selected. After the library of this channel is downloaded, using this library eliminates the waiting time for downloading the library when selecting a channel in the vicinity of the selected channel, thereby realizing a comfortable channel selection for the user. .

Embodiment 4 FIG. FIG. 7 is a diagram showing an example of an EPG screen displayed on a display screen by the broadcast receiving device according to the fourth embodiment of the present invention. The broadcast receiving apparatus according to the fourth embodiment checks whether a library used in a channel is stored in a library buffer, and displays the channel stored in the library buffer on the EPG screen. is there.

The configuration of the broadcast receiving apparatus according to the fourth embodiment of the present invention is the same as that of the broadcast receiving apparatus according to the first embodiment of the present invention shown in FIG.

In the broadcast receiving apparatus according to the fourth embodiment,
When the name of the library used for decoding the program data of each channel is described in the EPG data received by the EPG receiving unit 17, the channel check unit 18 uses the EPG data for each channel. The library is detected and compared with the library held in the library buffer 15, and the channel using the library held in the library buffer 15 is notified to the display control unit 19. Display control unit 19
Performs display control based on the notification from the library check unit 18 so that the channels using the library held in the library buffer 15 are displayed collectively on the EPG screen, and the EPG shown in FIG.
The screen 20 is displayed on the display screen. FIG. 7 is a display example in the case where only the libraries A and B among the libraries A to D are held in the library buffer 15, and as shown in FIG.
They are displayed collectively on the left side of the PG screen.

If the name of the library used to decode the program data of each channel is not described in the data of the EPG, the data receiving unit 11 sequentially switches and receives all the channels and receives each program signal. The header separation unit 12 separates the header part of the program signal of each channel and outputs it to the library control unit 14. The library control unit 14 decodes the header part of the program signal of each channel, and Of the library stored in the library buffer 15, and notifies the display control unit 19 of the channel using the library stored in the library buffer 15. The display control unit 19 performs display control based on the notification from the library control unit 14 so that the channels using the library held in the library buffer 15 are displayed collectively on the EPG screen.

As described above, in the fourth embodiment, the channel using the library held in the library buffer 15, that is, the channel that does not need to be downloaded when the channel is selected is set to the EP.
Because it is configured to be displayed on the G screen in advance, no matter which channel is selected in this block on the EPG screen, there is no need to wait for downloading when selecting a channel, and the user can comfortably use the channel. You can make a selection. For the channels using the library not held in the library buffer 15, the configuration of the first or second embodiment is adopted.
When selecting these channels, it is possible to shorten the download waiting time or eliminate it at all.

Embodiment 5 FIG. In the first and second embodiments, a plurality of cells corresponding to each of a plurality of channels is m × n.
On the EPG screen arranged in a matrix (m and n are positive integers), any one of the plurality of cells is changed from one cell to any cell adjacent thereto by one remote control operation. In the broadcast receiving apparatus according to the fifth embodiment, a plurality of cells corresponding to each of a plurality of channels are set to m × n (m and n are each set to a number of cells). EPG recursively arranged in a matrix of (positive integers)
The minimum unit m selected by displaying the screen on the display screen and selecting an input key of a remote controller having an input key having an m × n matrix structure once less than the number of recursions of the cell arrangement on the EPG screen This is performed by selecting one of the cells arranged in a matrix of × n with an input key of a corresponding position of a remote controller having an input key of an m × n matrix structure.

The configuration of the broadcast receiving apparatus according to the fifth embodiment is the same as that of the broadcast receiving apparatus according to the first embodiment of the present invention shown in FIG. FIG. 8 is a diagram showing a configuration of input keys of a remote control device used for channel selection in the broadcast receiving device of the fifth embodiment. This remote control device is used to operate an EPG as shown in FIG. The user presses one of the input keys “upper left”, “upper right”, “lower left”, and “lower right” arranged at the center of the remote controller. This input key indicates each position when the display screen is divided into four parts. When the “upper left” key is pressed while the EPG screen of FIG. 9 is displayed, the upper left part is selected in FIG. The screen indicates that the part is selected, for example, by changing the color of the part. Then, by pressing a “select” key (not shown) of the remote controller in this state, the display screen is changed to that shown in FIG.
It switches to the one shown in. Similarly, when the "upper right" key is pressed while the EPG screen of FIG. 9 is displayed, the upper right portion in FIG. 9 is selected. By pressing the "select" key, the display screen is changed to the one shown in FIG. Switching to it, pressing the "lower left" key selects the lower left part in FIG.
By pressing the “select” key, the display screen is displayed as shown in FIG.
It switches to the one shown in Fig. 9 and presses the "lower right" key.
When the lower right part is selected and the "select" key is pressed, the display screen is switched to that shown in FIG. In addition, "up", "down",
“Left” and “right” input keys are used to change the selection range. For example, when the “upper left” key is pressed while the EPG screen of FIG. 9 is displayed, and the “lower” key is pressed while the upper left portion is selected in the EPG screen of FIG. 9, the lower left portion is selected in the EPG screen. When the "right" key is further pressed while the lower left part is in the selection range, E
In the PG screen, the lower right portion becomes the selection range. When the upper right key is further pressed with the lower right portion being the selection range, the upper right portion becomes the selection range on the EPG screen, and the lower right portion becomes the selection range. When the "left" key is further pressed in this state, the upper left portion on the EPG screen becomes the selection range. When the "UP" key provided on the remote control device is pressed, one level goes up. For example, when the "UP" key is pressed while the EPG screen of FIG. 9 is displayed, as shown in FIG. A simple EPG screen is displayed.
When the “UP” key is pressed while the screen is displayed, the EPG screen of FIG. 9 is displayed.

For example, when the EPG screen shown in FIG. 10 is displayed, the "upper left" input key of the remote controller is set to c.
h1, the input key of "upper right" corresponds to ch2, the input key of "lower left" corresponds to ch5, and the input key of "lower right" corresponds to ch6. By pressing any key, the corresponding channel is selected. You.

When the EPG of such a selection method is used, when the channel is finally determined, the candidates for the selected channel are always four channels. In the broadcast receiving apparatus according to the fifth embodiment, E is operated by remote control operation.
When the PG screen is selected and the EPG screen shown in FIGS. 10 to 13 is displayed, a decoding software program for decoding programs broadcast on the four channels displayed on the EPG screen is held in the library buffer. If the data software program is not held, the data software program not held is downloaded from the broadcast and stored in the library buffer.

More specifically, if the name of the library used to decode the program data of each channel is described in the EPG data received by the EPG receiving unit 17, for example, the figure is displayed as a final selection screen. When 10 is displayed, the channels (ch1, ch2, ch5, ch6) included in the EPG screen are notified to the library check unit 18 from the display control unit 19, and the channel check unit 18 uses the EPG data for each channel. Libraries that are not stored in the library buffer 15 are checked to determine whether these libraries are stored in the library buffer 15. If the libraries are not stored in the library buffer 15, the library reception is performed so as to receive the libraries not stored in the library buffer 16. The unit 16 is controlled. The library receiving unit 16 downloads a library not held in the library buffer 16 from the broadcast according to the control of the library check unit 18, and downloads the library from the library buffer 1.
6 is stored.

The EPG received by the EPG receiving unit 17
If the name of the library used to decode the data of the program of each channel is not described in the data of the channel, for example, when FIG. 10 is displayed as the final selection screen, the display control unit 19 displays the EPG screen. The included channels (ch1, ch2, ch5, ch6) are notified to the data receiving unit 11, the data receiving unit 11 sequentially receives and switches these channels, and the header separating unit 12 outputs the header portion of the program signal of each channel. Is separated and output to the library control unit 14. The library control unit 14 detects the library name for decoding the data of the program signal by decoding the header portion of the program signal of each channel, and these libraries are It is checked whether the library is stored in the library buffer 15 or not. 5 when not held controls the library receiver 16 to receive the library not held in the library buffer 16.

As described above, when the EPG screen for the final selection is displayed, the library used for decoding the data of the program of the channel displayed on the EPG screen is prefetched to be selected. The download of the library used in the final candidate channel, which is not held in the library buffer, is started prior to the selection of the reception channel, and the download waiting time of the broadcast receiving apparatus that performs the channel selection using the EPG is reduced. Can be shortened.

As described above, in the broadcast receiving apparatus according to the present embodiment, the data broadcast for broadcasting the program signals of two or more types of broadcast systems and the decode software program for decoding the broadcasted program signals on a plurality of channels. A broadcast receiving apparatus for receiving a broadcast signal broadcast by the method, wherein a selection of a reception channel is performed by displaying an EPG screen in which a plurality of cells corresponding to each of the plurality of channels are recursively arranged in a 2 × 2 matrix. The minimum unit 2 selected by selecting the input key of the remote controller displayed on the screen and having an input key having a 2 × 2 matrix structure once less than the number of recursions of the cell arrangement on the EPG screen
One of the cells arranged in a × 2 matrix is replaced by 2 ×
2 is selected by an input key at a corresponding position of a remote controller having an input key having a matrix structure of 2. At the time of selecting a small number of times, the selected minimum unit 2 ×
It is detected whether or not a decoding software program for decoding a program broadcast on a channel of a cell arranged in the matrix of No. 2 is held in the library buffer. Since the configuration is provided with a program downloading means for downloading the data software program from the broadcast and storing it in the program buffer, the EP
It is possible to reduce the download waiting time of the broadcast receiving apparatus that performs channel selection using G.

In the above embodiment, an EPG screen in which a plurality of cells respectively corresponding to a plurality of channels are recursively arranged in a 2 × 2 matrix is displayed on a display screen, and a 2 × 2 matrix structure is provided. One of the cells arranged in the 2 × 2 matrix of the minimum unit selected by selecting the input key of the remote controller having the input key once less than the number of recursions of the cell arrangement of the EPG screen is selected. 2
Although the description has been given of the case where the selection is made by the input key at the corresponding position of the remote controller having the input keys of the × 2 matrix structure, a plurality of cells corresponding to each of the plurality of channels are set to m × n (m and n are EPG screens recursively arranged in a matrix of (positive integers) are displayed on the display screen, and the input keys of the remote controller having the input keys of the m × n matrix structure are one less than the number of recursions of the cell arrangement of the EPG screen. One of the cells arranged in the m × n matrix of the minimum unit selected by selecting the number of times less is selected by the corresponding input key of the remote controller having the input key of the m × n matrix structure. If it does, the present invention can be applied, and the same effects as in the above embodiment can be obtained.

[0050]

As described above, according to the present invention (claim 1), a decoding software program for decoding program signals of two or more types of broadcast systems and a broadcast program signal on a plurality of channels is provided. A broadcast receiving apparatus for receiving a broadcast signal broadcast by a data broadcasting method for broadcasting, wherein a reception channel is selected by selecting a plurality of cells corresponding to each of the plurality of channels by m × n (m and n are positive numbers, respectively). On the EPG screen arranged in a matrix of (integer), one of the above-mentioned cells is selected with a cursor which can be moved one by one to one of the cells adjacent thereto by one remote control operation. And a library buffer for holding a decoding software program, and Detects whether or not a decoding software program for decoding a program broadcast on a cell in which a sol is located and a channel of a cell adjacent to this cell is held in the library buffer, and when the decoding software program is not held, A program download means for downloading the non-held data software program from the broadcast and storing the data software program in the program buffer is provided, so that the download waiting time of the broadcast receiving apparatus for selecting a channel using the EPG is reduced. There is an effect that can be.

Further, according to the present invention (claim 2), a data broadcasting method for broadcasting program signals of two or more types of broadcasting systems and a decoding software program for decoding broadcasted program signals on a plurality of channels. A broadcast receiving apparatus for receiving a broadcast signal broadcasted by a plurality of cells, wherein a plurality of cells corresponding to each of the plurality of channels are selected in a matrix of m × n (m and n are positive integers). By selecting one of the above-mentioned plurality of cells from one cell to one of the cells adjacent to the cell by one remote control operation on the EPG screen arranged at And the library buffer holding the decoding software program and the cursor on the EPG screen When moving from a first cell of the plurality of cells to a second cell adjacent to the first cell, the second cell and the second cell adjacent to the second cell have a second cell from the first cell. To decode a program broadcast on a third cell existing in the direction of movement to the cell, and on channels of the fourth and fifth cells adjacent to the third cell and also adjacent to the second cell. Program download means for detecting whether or not the decoded software program is held in the library buffer, and when not held, downloads the data software program not held from the broadcast and stores the data software program in the program buffer. , The effect of being able to reduce the download waiting time of the broadcast receiving apparatus that performs channel selection using the EPG is obtained. is there.

Further, according to the present invention (claim 3), a data broadcasting method for broadcasting program signals of two or more types of broadcasting systems and a decoding software program for decoding broadcasted program signals on a plurality of channels. A broadcast receiving apparatus for receiving a broadcast signal broadcasted by a plurality of cells, wherein a plurality of cells corresponding to each of the plurality of channels are selected in a matrix of m × n (m and n are positive integers). By selecting one of the above-mentioned plurality of cells from one cell to one of the cells adjacent to the cell by one remote control operation on the EPG screen arranged at , A cell of a channel in which a broadcast program signal is decoded using the same decoding software program is EPG Since the display control means for controlling the display of the EPG screen is arranged so as to be arranged on the screen, one channel is selected when a channel is selected on the EPG screen, and a library of this channel is selected. After downloading, it is possible to eliminate the waiting time for downloading the library when selecting a channel in the vicinity of the selected channel using this library, which has the effect of realizing user-friendly channel selection.

Further, according to the present invention (claim 4), a data broadcasting method for broadcasting a program signal of two or more types of broadcasting systems and a decoding software program for decoding a broadcasted program signal on a plurality of channels. A broadcast receiving apparatus for receiving a broadcast signal broadcasted by a plurality of cells, wherein a plurality of cells corresponding to each of the plurality of channels are selected in a matrix of m × n (m and n are positive integers). By selecting one of the above-mentioned plurality of cells from one cell to one of the cells adjacent to the cell by one remote control operation on the EPG screen arranged at A library buffer for holding a decoding software program, and a program signal to be broadcast being stored in the library buffer. EP as cell channel to be decoded using the decoding software program stored is arranged clustered in EPG screen in
Since the display control means for controlling the display of the G screen is provided, no matter which channel is selected in the block on the EPG screen, a download waiting time at the time of channel selection is not required. Has an effect that a channel can be selected comfortably.

Further, according to the present invention (claim 5), a data broadcasting method for broadcasting a program signal of two or more types of broadcasting systems and a decoding software program for decoding a broadcasted program signal on a plurality of channels. Is a broadcast receiving apparatus for receiving a broadcast signal broadcasted by a plurality of cells, wherein a plurality of cells corresponding to each of the plurality of channels are selected by a matrix of m × n (m and n are positive integers). A recursively arranged EPG screen is displayed on a display screen, and an input key of a remote controller having an input key having an m × n matrix structure is selected by selecting it once less than the number of recursions of the cell arrangement of the EPG screen. One of the cells arranged in the m × n matrix of the minimum unit is assigned to the corresponding position of the remote controller having the input keys having the m × n matrix structure. And a library buffer for holding a decoding software program, and the input key of the remote controller is selected on the EPG screen once less than the number of recursions of the cell arrangement on the EPG screen. At this point, it is detected whether or not a decoding software program for decoding a program broadcast on a cell channel arranged in an m × n matrix of the selected minimum unit is held in the library buffer, and held. A program download means for downloading the unretained data software program from the broadcast when it is not stored and storing the data software program in the program buffer. Wait for download There is an effect that it is possible to shorten the time.

[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 showing a display example of an EPG screen.

FIG. 3 is a diagram showing an example of input keys of a remote control device for selecting a channel using the EPG screen shown in FIG. 2;

FIG. 4 is a diagram for explaining an operation of the broadcast receiving device according to the second embodiment.

FIG. 5 is a flowchart for explaining the operation according to the first and second embodiments.

FIG. 6 shows E displayed by the broadcast receiving apparatus according to the third embodiment.
It is a figure showing an example of a PG screen.

FIG. 7 shows E displayed by the broadcast receiving apparatus according to the fourth embodiment.
It is a figure showing an example of a PG screen.

FIG. 8 is a diagram showing an example of input keys of a remote control device used in a broadcast receiving device according to a fifth embodiment.

FIG. 9 is a diagram for describing a channel selection operation in a broadcast receiving device according to a fifth embodiment.

FIG. 10 is a diagram for describing a channel selection operation in a broadcast receiving device according to a fifth embodiment.

FIG. 11 is a diagram illustrating a channel selection operation in a broadcast receiving device according to a fifth embodiment.

FIG. 12 is a diagram for describing a channel selection operation in the broadcast receiving device according to the fifth embodiment.

FIG. 13 is a diagram illustrating a channel selection operation in the broadcast receiving device according to the fifth embodiment.

FIG. 14 is a diagram for describing a channel selection operation in the broadcast receiving device according to the fifth embodiment.

FIG. 15 is a diagram showing a configuration of a broadcasting system using a broadcasting satellite.

FIG. 16 is a diagram showing an example of data broadcasted from a broadcaster in a conventional broadcast system and a screen display of a broadcast receiving device receiving the data.

FIG. 17 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. 18 is a diagram illustrating an example of a mode of delivering a decoding software program for decoding broadcast data by broadcasting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Decode reception part 12 Header separation part 13 Decoding processing part 14 Library control part 15 Library buffer 16 Library reception part 17 EPG reception part 18 Library check part 19 Display control part 20 EPG screen 21 Cell 22 Cursor 30 Input key

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

Claims (5)

[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. An apparatus in which a plurality of cells respectively corresponding to a plurality of channels are arranged in a matrix of m × n (m and n are positive integers).
A method in which one of the plurality of cells is selected on the G screen by a cursor which can be moved one by one from a cell to one of cells adjacent thereto by one remote control operation, and decoding is performed. A library buffer holding a software program, and a decoding software program for decoding a program broadcast on a cell on which the cursor is located on the EPG screen and a cell adjacent to the cell are held in the library buffer. Program receiving means for detecting whether or not the data software program is not held, downloading the data software program not held from the broadcast, and storing the data software program in the program buffer. . 2. 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. An apparatus in which a plurality of cells respectively corresponding to a plurality of channels are arranged in a matrix of m × n (m and n are positive integers).
A method in which one of the plurality of cells is selected on the G screen by a cursor which can be moved one by one from a cell to one of cells adjacent thereto by one remote control operation, and decoding is performed. A library buffer for holding a software program; and when the cursor moves from a first cell of the plurality of cells to a second cell adjacent thereto on the EPG screen, A third cell existing in the moving direction from the first cell to the second cell among cells adjacent to the second cell, and adjacent to the third cell and also adjacent to the second cell It is determined whether or not a decoding software program for decoding a program broadcast on channels of the fourth and fifth cells is held in the library buffer. Knowledge and, when not held, download data software program that is not the holding from a broadcast, the broadcast receiving apparatus characterized by comprising a program download means for storing in said program buffer. 3. Broadcast reception for receiving a broadcast signal broadcasted 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 decoding software program for decoding the broadcasted program signal. An apparatus in which a plurality of cells respectively corresponding to a plurality of channels are arranged in a matrix of m × n (m and n are positive integers).
A method in which one of the plurality of cells is selected on the G screen by a cursor which can be moved one by one to one of cells adjacent to one of the cells by one remote control operation, and The cell of the channel on which the program signal to be decoded is decoded using the same decoding software program is EP
A broadcast receiving apparatus comprising: display control means for controlling display of an EPG screen so as to be arranged on the G screen. 4. 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 a broadcast program signal. An apparatus in which a plurality of cells respectively corresponding to a plurality of channels are arranged in a matrix of m × n (m and n are positive integers).
A method in which one of the plurality of cells is selected on the G screen by a cursor which can be moved one by one from a cell to one of cells adjacent thereto by one remote control operation, and decoding is performed. A library buffer for holding a software program, and an EPG screen display so that cells of channels on which broadcasted program signals are decoded by using the decoding software program held in the library buffer are arranged in a block on the EPG screen. A broadcast receiving apparatus comprising display control means for performing control. 5. 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 a broadcast program signal. An EPG screen in which a plurality of cells corresponding to each of the plurality of channels is recursively arranged in a matrix of m × n (m and n are positive integers) on the display screen. And a minimum unit m × n matrix selected by selecting the input key of the remote controller having an m × n matrix structure input key once less than the number of recursions of the cell arrangement on the EPG screen. By selecting one of the arranged cells with an input key at a corresponding position on a remote controller having an input key having an m × n matrix structure. In those conducted, and libraries buffer for holding decoding software programs, the input keys of the remote control in the EPG window E
Decoding software for decoding a program broadcast on a channel of a cell arranged in an m × n matrix of the selected minimum unit at the time of selecting the number of times less than the number of recursions of the cell array of the PG screen. Program download means for detecting whether the program is held in the library buffer, and when not held, downloading the data software program not held from the broadcast and storing the data software program in the program buffer. A broadcast receiving apparatus characterized by the above-mentioned.