JP5808145B2 - Program guide generating apparatus and program guide generating method - Google Patents

Description

  The present invention relates to a program guide generating apparatus and a program guide generating method for generating a program guide for digital broadcasting.

  Currently, the transition from analog broadcasting to digital broadcasting is progressing. In digital broadcasting, since each broadcast station can send program data on a broadcast wave, the receiving apparatus has a function of displaying a program table of each broadcast station on a television screen or the like as an electronic program guide. It is common.

  In the electronic program guide, in addition to displaying the electronic program guide, it is possible to display the selected program title and broadcast time, performers and program contents, and program reservation. In particular, the electronic program guide can display program information of a plurality of broadcast stations in a desired time zone, which is useful for confirming broadcast schedules and searching for programs.

  The electronic program guide is generated based on the program information of each broadcast station included in the broadcast wave, but when the program scheduled to be broadcast or the contents of the program has been changed, or when the program currently being broadcast has ended It is necessary to update the contents. In particular, when the program information is updated while the electronic program guide is being displayed, it is necessary to update the contents so that the user does not feel stress.

  Japanese Patent Application Laid-Open No. 2004-151867 discloses a technique that prevents the user from operating the electronic program guide by the update process of the electronic program guide. The electronic program guide creation device disclosed in Patent Document 1 is configured not to execute an electronic program guide update process when a user continuously operates the electronic program guide. For this reason, according to the technique disclosed in Patent Literature 1, the user's operation is not temporarily hindered by the update process of the electronic program guide, and the operability can be improved.

JP 2007-28076 A (paragraph 0019, FIG. 1)

  However, in the technique described in Patent Document 1, if there is a program that has been broadcast during the operation of the electronic program guide by the user, the contents of the electronic program guide being displayed may be different from the program currently being broadcast. is there.

  In addition, when changing the time zone or broadcasting station to be displayed on the electronic program guide, it is common to scroll the display contents by key operation or the like. However, since the electronic program guide has a large amount of information to be displayed, it takes a lot of time to generate the switching destination screen data from scratch when switching the display screen. Therefore, for example, when the user mistakenly performs a key operation and the key operation is performed again after the display screen is switched, the user feels a great stress on the display response.

  SUMMARY OF THE INVENTION An object of the present invention is to suppress the processing load and processing time of program information update processing so that a program table can be scroll-displayed with high responsiveness.

A program guide generation device according to an aspect of the present invention provides:
A parts generator for generating graphics data of the parts constituting the program guide screen;
A display list generator for generating a display list including a drawing definition for each part showing a definition for drawing the program guide screen using the graphics data;
A drawing unit that generates screen data of the program guide screen using the graphics data according to the drawing definition;
An update information storage unit for storing update information including a type of program information necessary for configuring the program guide screen, and part identification information indicating a part generated from the type of program information;
A program information receiving unit for acquiring the program information from program arrangement information separated from a digital broadcast wave;
An update determination unit that determines whether or not the program information has been updated,
When the update determination unit determines that the program information has been updated, the part generation unit specifies a part corresponding to the type of the updated program information from the update information, and the part generation unit Generating graphics data from the updated program information;
The display list generation unit displays the display list so that the drawing definition of the identified part draws the program guide screen using graphics data generated from the updated program information. Updated,
The drawing unit generates screen data of the program guide screen according to the updated display list.

  According to one aspect of the present invention, it is possible to scroll and display a program guide with high responsiveness while suppressing the processing load and processing time of program information update processing.

It is a block diagram which shows schematic structure of a program schedule production | generation apparatus. It is the schematic which shows an example of update information. It is the schematic which shows an example of a program schedule screen. It is an exploded view which shows roughly the structure of program schedule graphics. It is the schematic which shows an example of the data structure of a program schedule display list. It is the schematic which shows an example of the structure of a video memory. It is a flowchart which shows roughly the process at the time of a program schedule production | generation apparatus updating a program schedule screen based on program information. It is a flowchart which shows roughly the process at the time of user operation being performed in the program schedule production | generation apparatus.

  FIG. 1 is a block diagram showing a schematic configuration of a program guide generating apparatus 100 according to the embodiment. The program guide generating apparatus 100 includes a reception processing unit 101, a program information receiving unit 102, an operation receiving unit 103, a data storage unit 104, an update information storage unit 105, a program information storage unit 106, and a control unit 107. , A video memory 112, a drawing unit 113, and a display unit 114. Here, the update information storage unit 105, the program information storage unit 106, the control unit 107, and the drawing unit 113 constitute a program information display processing unit 115. The control unit 107 includes an overall control unit 108, an update determination unit 109, a parts generation unit 110, and a display list generation unit 111.

  The reception processing unit 101 generates a TS (Transport Stream) from radio waves received by an antenna (not shown), and separates SI (Service Information) that is program arrangement information from the TS. Then, the reception processing unit 101 gives the separated SI to the program information receiving unit 102. Here, for example, the TS generated by the reception processing unit 101 is an MPEG2 TS.

  The program information receiving unit 102 acquires program information necessary for constructing a program guide from the SI. Then, the program information receiving unit 102 gives the acquired program information to the control unit 107. Here, in the present embodiment, the program information includes at least TOT (Time Offset Table), EIT_p / f (Event Information Table_present / following), and EIT_s (Event Information Table_schedule). The TOT includes information related to the current time and date, and information indicating an offset time at the time of daylight saving time. EIT_p / f includes information indicating the current program (present) and the next program (following) in EIT (Event Information Table) in which information about the program such as the program name, broadcast date and time, and program content is described. EIT_s is schedule information in the EIT, and includes, for example, a program schedule for 8 days.

  The operation receiving unit 103 receives an input of an operation from the user. For example, the operation reception unit 103 can be realized by a key input device (keyboard, touch panel, remote controller, etc.), a pointing device (mouse, etc.), or an interface having a communication function with an external device. Then, the operation accepting unit 103 notifies the control unit 107 of the operation content from the user who accepted the input.

  The data storage unit 104 stores a plurality of material data for generating graphics data of parts constituting the screen data of the program guide. For example, the material data is vectorized data, and includes vectorized icon data, graphics data for logo marks, and vector font data (outline font data).

The update information storage unit 105 stores program information to be updated and parts generated from the program information, and stores update information indicating an update frequency of the program information. FIG. 2 is a schematic diagram illustrating an example of the update information RD. As illustrated, the update information RD includes a program information type column RD1, a parts column RD2, and an update frequency column RD3.
The program information type column RD1 stores a program information type that is identification information for identifying program information.
The parts field RD2 stores parts identification information for identifying parts generated based on the program information identified in the program information type field RD1. Here, a part name is used as the part identification information.
The update frequency column RD3 stores update frequency information indicating the update frequency at which the program information identified in the program information type column RD1 is updated. For example, the update frequency is represented by a natural number, and the smaller the value, the higher the update frequency. In the example of FIG. 2, the content of the TOT is updated at a 1-minute cycle, so the update frequency is the highest. The content of EIT_p / f is updated next to TOT because the content is updated when the currently broadcast program ends. Since the content of EIT_s is updated when the date is changed unless the content of the scheduled broadcast is changed, the frequency of updating EIT_s is the lowest. When the program information is updated, the graphics data of the parts generated from the program information is also updated. Therefore, the update frequency information also indicates the part update frequency.

  Returning to the description of FIG. 1, the program information storage unit 106 stores program information used when generating the latest program guide.

  The control unit 107 includes an overall control unit 108, an update determination unit 109, a parts generation unit 110, and a display list generation unit 111. The control unit 107 performs processing for generating and updating graphics data and a display list for configuring screen data of the program guide.

FIG. 3 is a schematic diagram showing an example of a program guide screen PG drawn based on the screen data of the program guide. The program guide screen PG includes program guide background graphics B01, time information graphics T01, and program guide graphics E01.
The program guide background graphics B01 includes graphics B011 constituting a background, graphics B012 constituting a title, graphics B013 constituting a logo mark, and the like.
The time information graphics T01 indicates the current date and time obtained from the SI.
The program guide graphics E01 indicates the contents of the program to be broadcast in association with the date and time and the broadcasting station. In the program guide graphics E01, date and time information (y axis in FIG. 3) and broadcast station information (x axis in FIG. 3) are scrolled by a user operation. Further, in the program guide graphics E01, the background color of the currently broadcast program is changed so that the currently broadcast program can be seen at a glance.

  FIG. 4 is an exploded view schematically showing the structure of the program guide graphics E01. The program guide graphics E01 includes a first program guide fixed part (updated: y axis) FUY01, a second program guide fixed part (updated: y axis) FUY02, and a third program guide fixed part (updated: x axis). It consists of FUX01, limited program guide part P01, and wide program guide part W01. In the limited program guide part P01 and the wide-range program guide part W01, the area actually displayed on the program guide screen PG (see FIG. 2) is the screen display area SR surrounded by a broken line.

  The first program guide fixed part FUY01 indicates the date, and the second program guide fixed part FUY02 indicates the time. The first program guide fixed part FUY01 and the second program guide fixed part FUY02 are displayed as a program guide screen PG (see FIG. 2) when the program guide graphics E01 is scrolled in the y-axis direction by a user operation. Is changed. Here, the first program guide fixed part FUY01 is scrolled according to the date, while the second program guide fixed part FUY02 is scrolled according to the time. In addition, the third program guide fixed part FUX01 displays information indicating broadcasting stations side by side in the horizontal direction (x-axis direction). The display area of the third program guide fixed part FUX01 is changed when the program guide graphics E01 is scrolled in the x-axis direction by a user operation.

The wide-range program guide part W01 displays the contents of the broadcast program in association with the date and time and the broadcasting station. The wide-area program guide part W01 is generated for each date, for example.
The limited program guide part P01 displays the contents of the currently broadcast program and the next broadcast program. Since the broadcast time of the program broadcast by each broadcast station varies from program to program, the height (time range) of the limited program guide part P01 is determined based on the broadcast station having the maximum broadcast time. For other broadcasting stations, transparent graphics having a size that is insufficient for the maximum broadcasting time are added, and the limited program guide part P01 is generated as rectangular graphics as a whole. . For example, in FIG. 4, the height of the limited program guide part P01 is determined based on the broadcasting station of ch6, and transparent graphics shown by cross hatching are added to the other broadcasting stations. . The limited program guide part P01 is indicated by hatching in FIG. 4, but the background color of the portion displaying the contents of the program currently being broadcast is changed. For this reason, the user can easily recognize the program currently being broadcast. Such a limited program guide part P01 is displayed superimposed on the wide program guide part W01. The display area of the limited program guide part P01 is changed when the program guide graphics E01 is scrolled by a user operation.
Thus, by generating the graphics data of the limited program guide part P01 as one rectangular graphic, it is possible to reduce the amount of data to be updated at the time of program information update or user operation.

  Returning to the description of FIG. 1, the overall control unit 108 controls the overall processing performed by the program guide generation device 100. For example, the overall control unit 108 displays a specific screen on the display unit 114 by notifying the drawing unit 113 of a display instruction. Further, the overall control unit 108 notifies the drawing unit 113 of a display switching instruction, thereby switching the screen displayed on the display unit 114. Further, the overall control unit 108 performs processing corresponding to the operation content received by the operation receiving unit 103.

  The update determination unit 109 compares the program information obtained from the program information reception unit 102 with the program information stored in the program information storage unit 106, thereby updating the program information obtained from the program information reception unit 102. Determine the presence or absence. Then, when there is an update, the update determination unit 109 updates the program information stored in the program information storage unit 106 based on the program information obtained from the program information reception unit 102.

  The parts generation unit 110 generates graphics data of parts constituting the program guide screen PG. In particular, when the program information obtained from the program information receiving unit 102 is updated, the parts generating unit 110 generates graphics data for parts corresponding to the updated program information.

  The display list generation unit 111 stores the graphics data generated by the parts generation unit 110 in a video memory, and also uses the part graphics data generated by the parts generation unit 110 to display a program guide screen PG (see FIG. 3). To generate a program guide display list including drawing definitions for each part. Then, the display list generating unit 111 stores the generated program guide display list in the video memory 112.

FIG. 5 is a schematic diagram showing an example of the data structure of the program guide display list PL. The program guide display list PL shows a drawing definition for drawing the program guide screen PG in each row using the graphics of each part. In the example of FIG. 5, the program guide display list PL includes a graphic arrangement of each part according to four parameters of a first column PL1, a second column PL2, a third column PL4, and a fourth column PL5. And the size is specified.
The parameter in the first column PL1 indicates an address on the video memory 112 in which the graphics data of the part corresponding to each row is stored.
The parameters in the second column PL2 indicate the reference coordinates of the display effective area when the graphics of the parts corresponding to each row are displayed on the program guide screen PG.
The parameters in the third column PL3 indicate the width and height of the display effective area when the graphics of the parts corresponding to each row are displayed on the program guide screen PG.
The parameters in the fourth column PL4 indicate reference coordinates for drawing the graphics of the parts corresponding to each row.

For example, the first line of FIG. 5 shows the drawing definition of the program guide fixed part without updating, in which the display effective area does not need to be updated. The graphics data of this program guide fixed part is stored at the address “0x02800000” on the video memory 112, and the reference coordinate of the display effective area of the graphics of this program guide fixed part is the x coordinate from “0x00000000”. Is “0” and the y coordinate is “0”, and the width and height of the graphics display effective area of the program guide fixed part is “0x078000438”, the width is “1920 (pixels)”, and the height is “1080 (pixel)”, and the graphics of this program guide fixed part are drawn with the x coordinate being “0” and the y coordinate being “0” from the drawing reference coordinate “0x00000000”. Note that the program guide fixed parts without updating correspond to the parts for displaying the program guide background graphics B01 shown in FIG.
Similarly, the drawing definition of the updated program guide fixed part that needs to be updated in the display effective area has graphics data stored in the address “0x02400000” on the video memory 112 and is displayed on the display screen. In this case, the display effective area has a reference coordinate (256, 128) from “0x01000080”, a width “1800 (pixel)” and a height “128 (pixel)” from “0x07080080”, and the reference coordinates for drawing graphics Are coordinates (0, 0) from “0x00000000”. For example, the updated program guide fixed parts are the first program guide fixed part FUY01, the second program guide fixed part FUY02, and the third program guide fixed part FUX01 shown in FIG.
In addition, in the drawing definition of the wide program guide part, the graphics data is stored at the address “0x01000000” on the video memory 112, and the display effective area when displayed on the display screen has the reference coordinates (256, 256). ), The width is “1600 (pixels)”, the height is “768 (pixels)”, and the reference coordinates for drawing graphics are (0, 0).
Furthermore, in the drawing definition of the limited program guide part, the graphics data is stored at the address “0x02000000” on the video memory 112, and the display effective area when displayed on the display screen has the reference coordinates (256, 256). ), The width is “1600 (pixels)”, the height is “512 (pixels)”, and the reference coordinates for drawing graphics are (0, 0).
Furthermore, in the drawing definition of the time date part, the graphics data is stored at the address “0x0230000000” on the video memory 112, and the reference coordinate is (1200, 32) in the display effective area when displayed on the display screen. ), The width is “640 (pixels)”, the height is “100 (pixels)”, and the reference coordinates for drawing the graphics data are (0, 0). The time date part corresponds to a part for displaying the time information graphics T01 shown in FIG.

  Note that the display list generation unit 111 refers to the update information RD stored in the update information storage unit 105, and the drawing definition of parts with a lower update frequency is stored in a line closer to the top of the program guide display list PL. As described above, the program guide display list PL is generated. The program guide fixed part is determined in advance as having the lowest update frequency because it is not necessary to update the graphics data itself. And the drawing part 113 arrange | positions the graphics of parts in an order from the first line of the program schedule display list PL, so that parts with higher update frequency are arranged in the upper layer in the program schedule screen PG. For this reason, when displaying an updated part, it is not necessary to change other graphics that have not been updated, and the processing load during the update is reduced.

  Returning to the description of FIG. 1, the video memory 112 stores the graphics data generated by the parts generation unit 110, the display list generated by the display list generation unit 111, and the like.

FIG. 6 is a schematic diagram showing an example of the structure of the video memory 112. The video memory 112 includes a frame buffer first area 112A, a frame buffer second area 112B, a program guide display list first area 112C, a program guide display list second area 112D, and a wide program guide part first area 112E. Wide program guide parts second area 112F, limited program guide parts first area 112G, limited program guide parts second area 112H, time date parts first area 112I, time date parts second area 112J, program A table fixing part first area 112K and a program table fixing part second area 112L are provided.
The frame buffer first area 112A and the frame buffer second area 112B store the frame data of the program guide screen PG rendered by the rendering unit 113. Here, the frame buffer first area 112A and the frame buffer second area 112B store frame data alternately. For example, when the frame buffer first area 112A stores the frame data of the currently displayed program guide screen PG, the frame buffer second area 112B stores the frame data of the program guide screen PG to be displayed next. To do.
The program guide display list first area 112C and the program guide display list second area 112D store the program guide display list PL generated by the display list generator 111. Here, the program guide display list first area 112C and the program guide display list second area 112D also store the program guide display list PL alternately.
The wide-area program guide part first area 112E and the wide-area program guide part second area 112F store the graphics data of the wide-area program guide parts generated by the parts generator 110. Here, the wide area program guide part first area 112E and the wide area program guide part second area 112F also alternately store the graphic data of the wide area program guide part.
The limited program guide parts first area 112G and the limited program guide parts second area 112H store graphics data of the limited program guide parts generated by the parts generator 110. Here, the limited program guide part first area 112G and the limited program guide part second area 112H also alternately store graphics data of the limited program guide parts.
The time date parts first area 112 </ b> I and the time date parts second area 112 </ b> J store the graphics data of the time date parts generated by the parts generator 110. Here, the time date parts first area 112I and the time date parts second area 112J also store the graphics data of the time date parts alternately.
The program guide fixed part first area 112K stores an updated program guide fixed part generated by the parts generator 110.
The program guide fixed part second area 112L stores the program guide fixed parts that are not updated and are generated by the parts generator 110.

  Returning to the description of FIG. 1, the drawing unit 113 is a graphics engine that processes vector-format data, and operates in response to an instruction from the control unit 107. For example, when the drawing unit 113 receives a display instruction or a switching instruction from the overall control unit 108 of the control unit 107, the drawing unit 113 performs video based on the display list developed in the video memory 112 designated by the overall control unit 108. By drawing graphics from the graphics data stored in the memory 112 and combining the graphics, program table screen data is generated. Then, the drawing unit 113 gives the generated screen data to the display unit 114.

  The display unit 114 displays a screen based on the screen data obtained from the drawing unit 113.

  The control unit 107, the update information storage unit 105, the program information storage unit 106, and the drawing unit 113 are, for example, a microprocessor such as a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), a timer circuit, an input / output interface, and the like. It can be composed of an integrated circuit including a dedicated processing unit. Further, all or a part of the functions of the control unit 107, the update information storage unit 105, the program information storage unit 106, and the drawing unit 113 may be realized by hardware, or a predetermined computer program is executed. It may be realized by a microprocessor. Further, when all or part of the functions of the control unit 107, the update information storage unit 105, the program information storage unit 106, and the drawing unit 113 are realized by a computer program (including an executable file), the microprocessor The function can be realized by loading and executing a computer program or an executable file corresponding thereto from a readable recording medium. The data storage unit 104 can be realized using a storage device such as a reading device including a nonvolatile memory, an HDD (hard disk drive), or an optical disk.

  Hereinafter, the operation of the program guide generating apparatus 100 having the above configuration will be described with reference to FIGS. 7 and 8.

  FIG. 7 is a flowchart schematically showing processing when the program guide generating apparatus 100 updates the program guide screen. When receiving the program information from the program information receiving unit 102, the control unit 107 of the program guide generating apparatus 100 starts the process of FIG.

  First, the update determination unit 109 identifies the type of program information received from the program information reception unit 102 (step S10). The update determining unit 109 proceeds to the process of step S11 when the identified type is “EIT_s”, and proceeds to the process of step S16 when the identified type is “EIT_p / f”. If the identified type is “TOT”, the process proceeds to step S21.

  In step S <b> 11, the update determination unit 109 compares the program information received from the program information reception unit 102 with the current program information stored in the program information storage unit 106 and determines whether there is an update. Then, when there is an update (Yes in step S11), the update determination unit 109 updates the contents of EIT_s in the program information storage unit 106 based on the program information received from the program information reception unit 102. Further, the update determination unit 109 instructs the part generation unit 110 to generate a corresponding part, and proceeds to the process of step S12. On the other hand, if there is no update (No in step S11), the update determination unit 109 ends the process.

  In step S12, the parts generation unit 110 refers to the update information RD stored in the update information storage unit 105, and generates graphics data of the wide-range program guide part based on the received program information.

  Next, the display list generation unit 111 writes the graphics data generated in step S12 at a predetermined address in the video memory 112 (S13). For example, when the graphics data of the wide program guide part of the program guide screen PG currently displayed is stored in the wide program guide part first area 112E of the video memory 112, the display list generation unit 111 has a wide range. The generated graphics data is written in the program guide part second area 112F.

  Next, the display list generating unit 111 generates a program guide display list for displaying graphics data of the generated wide-range program guide part (S14). For example, the display list generation unit 111 stores the program guide display list of the program guide screen PG currently displayed in the program guide display list first area 112C and the program guide display list second area 112D of the video memory 112. This program guide display list is copied from one area to the other area. Then, the display list generating unit 111 stores the parameters of the first column PL1 of the drawing definition of the wide-range program guide part in the program guide display list stored in the copy destination area, and the graphics data in step S13. The address is changed to the address on the memory 112.

  Next, the overall control unit 108 changes the display contents by changing the program guide display list referred to by the drawing unit 113 (step S15). The drawing unit 113 generates screen data based on the changed program guide display list, and outputs the generated screen data to the display unit 114, thereby causing the display unit 114 to display the updated program guide screen PG. .

On the other hand, when the type of program information specified by the update determination unit 109 is “EIT_p / f” (step S10), the process of step S16 is performed.
In step S <b> 16, the update determination unit 109 compares the program information received from the program information reception unit 102 with the current program information stored in the program information storage unit 106 and determines whether there is an update. Then, when there is an update (Yes in step S16), the update determination unit 109 updates the content of EIT_p / f in the program information storage unit 106 based on the program information received from the program information reception unit 102. Further, the update determination unit 109 instructs the part generation unit 110 to generate a corresponding part, and the process proceeds to step S17. On the other hand, if there is no update (No in step S16), the update determination unit 109 ends the process.

  In step S <b> 17, the parts generation unit 110 refers to the update information RD stored in the update information storage unit 105 and generates graphics data of limited program guide parts based on the received program information.

  Next, the display list generation unit 111 writes the graphics data generated in step S17 at a predetermined address in the video memory 112 (S18). For example, the display list generation unit 111 is limited when the graphics data of the limited program guide part of the program guide screen PG currently displayed is stored in the limited program guide part first area 112G of the video memory 112. The generated graphics data is written in the program guide part second area 112H.

  Next, the display list generation unit 111 generates a program guide display list for displaying the graphics data of the generated limited program guide parts (S19). For example, the display list generation unit 111 stores the program guide display list of the program guide screen PG currently displayed in the program guide display list first area 112C and the program guide display list second area 112D of the video memory 112. This program guide display list is copied from one area to the other area. Then, the display list generation unit 111 stores the parameters in the first column PL1 of the drawing definition of the limited program guide part in the program guide display list stored in the copy destination area, and the graphics data in step S18. The address is changed to the address on the memory 112. Further, the display list generation unit 111 updates the parameter in the third column PL3 of the drawing definition of the limited program guide part so as to indicate the height value of the limited program guide part generated in step S17. Further, when the display time of the limited program guide part generated in step S17 is updated, the display list generation unit 111 updates the parameters in the fourth column PL4 of the drawing definition of the limited program guide part. The value shifted by the number of pixels corresponding to the time after the update is shown.

  Next, the overall control unit 108 changes the display content by changing the program guide display list referred to by the drawing unit 113 (step S20). The drawing unit 113 generates screen data based on the changed program guide display list, and outputs the generated screen data to the display unit 114, thereby causing the display unit 114 to display the updated program guide screen PG. .

On the other hand, when the type of program information specified by the update determination unit 109 is “TOT” (step S10), the process of step S21 is performed.
In step S21, the update determination unit 109 compares the program information received from the program information reception unit 102 with the current program information stored in the program information storage unit 106, and determines whether there is an update. If there is an update (Yes in step S21), the update determination unit 109 updates the content of the TOT in the program information storage unit 106 based on the program information received from the program information reception unit 102. Furthermore, the update determination unit 109 instructs the part generation unit 110 to generate a corresponding part, and the process proceeds to step S22. On the other hand, if there is no update (No in step S21), the update determination unit 109 ends the process.

  In step S <b> 22, the parts generation unit 110 refers to the update information RD stored in the update information storage unit 105, and generates graphics data of the time date part based on the received program information.

  Next, the display list generation unit 111 writes the graphics data generated in step S22 to a predetermined address in the video memory 112 (S23). For example, if the graphics data of the time date part of the currently displayed program guide screen PG is stored in the time date part first area 112I of the video memory 112, the display list generation unit 111 sets the time date part. The generated graphics data is written in the second area 112J.

  Next, the display list generating unit 111 generates a program guide display list for displaying the graphics data of the generated time date part (S24). For example, the display list generation unit 111 stores the program guide display list of the program guide screen PG currently displayed in the program guide display list first area 112C and the program guide display list second area 112D of the video memory 112. This program guide display list is copied from one area to the other area. Then, the display list generation unit 111 stores the parameter of the first column PL1 of the drawing definition of the time date part in the program guide display list stored in the copy destination area, and the graphics data in step S23. The address is changed to the address on 112.

  Next, the overall control unit 108 changes the display content by changing the program guide display list referred to by the drawing unit 113 (step S25). The drawing unit 113 generates screen data based on the changed program guide display list, and outputs the generated screen data to the display unit 114, thereby causing the display unit 114 to display the updated program guide screen PG. .

  As described above, the program guide generation device 100 divides the program guide screen PG to be displayed into a plurality of parts according to the update frequency, and displays the divided parts in an order of increasing update frequency, so that the program information is updated. When it is done, only the graphics data of the part to be updated is updated, so the update frequency is low, the number of parts update that requires processor resources and time at the time of update is reduced, and the scrolling with good user response The operation can be realized.

  FIG. 8 is a flowchart schematically showing processing when a user operation is performed in the program guide generation device 100. The control unit 107 starts the flowchart of FIG. 8 when receiving the operation content from the operation receiving unit 103.

  First, the overall control unit 108 of the control unit 107 identifies the user operation content notified from the operation receiving unit 103 (S30). The overall control unit 108 proceeds to the process of step S31 when the specified operation content indicates the end of display of the program guide, and proceeds to step S31 when the specified operation content indicates the start of display of the program guide. Proceeding to the process of S32, if the specified operation content indicates the movement of the program guide, the process proceeds to the process of step S39.

  In step S <b> 31, the overall control unit 108 notifies the drawing unit 113 of the display stop, and ends the display of the program guide screen PG. When switching the display content to another graphics screen, the overall control unit 108 causes the drawing unit 113 to switch the display list to be referenced to the display list of the graphics screen to be switched to, so that the screen is displayed. Can be switched quickly.

On the other hand, if the operation content indicates a start operation (step S30), the overall control unit 108 proceeds to the process of step S32.
In step S32, the parts generation unit 110 generates graphics data of the program guide fixed part. Here, the parts production | generation part 110 produces | generates a program schedule fixed part separately according to the presence or absence of an update. Graphics data that is always drawn at a fixed position during display of the program guide screen PG, such as a background and a logo mark, is collectively generated as a program guide fixed part without updating. In addition, the parts generation unit 110 does not update the graphics data itself as in the broadcasting station, date, time, etc., but the graphics data has a size corresponding to a plurality of screens, and is used for a user's program guide movement operation (scroll operation). The graphics data whose display effective area is shifted based on it is divided into parts according to the moving direction and moving amount, and is generated as graphics data of each program guide fixed part.

  Next, the parts generation unit 110 generates graphics data of a wide-range program guide part based on the contents of EIT_s stored in the program information storage unit 106 (S33).

  Next, the parts generation unit 110 generates graphics data of limited program guide parts based on the contents of EIT_p / f stored in the program information storage unit 106 (S34).

  Next, the parts generation unit 110 generates graphics data of the time date parts based on the contents of the TOT stored in the program information storage unit 106 (S35).

  Then, the display list generation unit 111 writes the graphics data generated in steps S32 to S35 in predetermined areas of the video memory 112 (S36).

  In addition, the display list generation unit 111 refers to the update information stored in the update information storage unit 105, arranges the generated graphics data, and displays the program guide display for displaying the program guide screen PG. A list PL is generated and written in a predetermined area on the video memory 112 (S37). Here, the display list generation unit 111 generates the program guide display list PL by storing the drawing definitions of parts with a lower update frequency in a line closer to the top of the program guide display list PL. For example, among the program guide fixed parts generated in step S32, the drawing definition of the program guide fixed part without update is stored in the line closest to the top of the program guide display list PL, and then generated in step S32. Of the program guide fixed parts, the drawing definition of the updated program guide part is stored, and then the drawing definition of the wide program guide part generated in step S33 is stored, and then generated in step S34. The drawing definition of the limited program guide part is stored, and then the drawing definition of the time date part generated in step S35 is stored.

  Note that the control unit 107 performs the program information update processing even when the program guide screen PG is not displayed, and the processing from step S32 to step S37 is performed only once when the program guide generation device 100 is activated. May be.

  Next, the overall control unit 108 switches the display contents by notifying the drawing unit 113 to change the display list to be referred to (S38). The drawing unit 113 generates screen data based on the changed display list, and outputs the generated screen data to the display unit 114, thereby causing the display unit 114 to display the program guide screen PG.

On the other hand, when the operation content indicates the movement of the program guide (step S30), the overall control unit 108 proceeds to the process of step S39.
In step S39, the overall control unit 108 determines a movement direction and a movement amount according to the operation content. For example, if the target operation content is a press of an up / down key, the overall control unit 108 determines that a certain number of pixels have moved in the x-axis direction. In addition, when the target operation content is a left / right key press, the overall control unit 108 determines that a certain number of pixels have moved in the y-axis direction. In addition, when the target operation content is a key operation that moves together for 6 hours, the overall control unit 108 determines that the number of pixels corresponds to 6 hours in the x-axis direction. Furthermore, when the target operation content is input via an interface such as a touch panel, the overall control unit 108 determines the start coordinates when touched on the operation screen and the constant after touching. The movement direction in the x-axis component and the y-axis component is calculated from the intermediate coordinates detected in the cycle and the end coordinate when released, and the operation screen and display are performed on the movement amounts in the x-axis component and the y-axis component. A value obtained by multiplying the screen ratio may be calculated as the movement amount.

  Next, the display list generation unit 111 uses the program guide screen PG currently displayed in the program guide display list first area 112C and the program guide display list second area 112D on the video memory 112. The program guide display list PL is copied from the area where the table display list PL is stored, and is copied to the other area. Then, the display list generation unit 111 shifts the display position by changing the parameter of the fourth column PL4 of the part that needs to be updated in the program guide display list PL stored in the copy destination area. For example, the display list generation unit 111 shifts the reference coordinates for drawing the graphics data of the limited program guide part by the movement amount calculated in step S39. Similarly, the display list generating unit 111 shifts the reference coordinates for drawing the graphics data of the wide-range program guide part by the movement amount calculated in step S39. Further, the display list generation unit 111 also shifts the graphics data of the updated program guide fixed part by the calculated movement amount, if necessary. However, in the present embodiment, the display list generating unit 111 shifts only one of the x-axis direction and the y-axis direction for the program guide fixed part with update (step S210).

  Next, the overall control unit 108 changes the display content by changing the display list referred to by the drawing unit 113 (S41). The drawing unit 113 generates screen data based on the changed display list, outputs the generated screen data to the display unit 114, and causes the display unit 114 to display the program guide screen PG.

  As described above, the program guide generation apparatus 100 is configured with a plurality of graphics data that exceeds the display area where the program guide display screen is actually displayed, and for the graphics data that is the target of the program guide moving operation by the user. Scroll display is performed by changing the drawing reference coordinates. Further, the graphics data of the parts constituting the program guide screen PG is divided based on the update frequency indicated by the update information RD stored in the update information storage unit 105, and based on the update determination of the update determination unit 109, By generating only the updated graphics data, it is possible to reduce the number of times graphics data is generated that has a low update frequency and takes time to generate. For this reason, it is possible to perform scroll display of the program guide with good operation response.

  In the embodiment described above, for example, as shown in FIG. 6, a plurality of areas for storing the program guide display list are provided in the video memory 112 and stored every time the program guide display list is updated. The display list generation unit 111, for example, when the drawing unit 113 can recognize the timing for fetching the program guide display list, shows the program used on the currently displayed program guide screen PG. The parameters stored in the table display list may be directly changed.

  In the above embodiment, the example in which the present invention is applied to the program guide generation device 100 has been shown. However, the present invention may be applied to other devices such as a video reception device, a video reception display device, or a video storage / reproduction device. .

  DESCRIPTION OF SYMBOLS 100: Program schedule production | generation apparatus, 101: Reception processing part, 102: Program information reception part, 103: Operation reception part, 104: Data storage part, 105: Update information storage part, 106: Program information storage part, 107: Control part 108: Overall control unit 109: Update determination unit 110: Parts generation unit 111: Display list generation unit 112: Video memory 113: Drawing unit 114: Display unit

Claims (16)

A parts generator for generating graphics data of the parts constituting the program guide screen;
A display list generator for generating a display list including a drawing definition for each part showing a definition for drawing the program guide screen using the graphics data;
A drawing unit that generates screen data of the program guide screen using the graphics data according to the drawing definition;
An update information storage unit for storing update information including a type of program information necessary for configuring the program guide screen, and part identification information indicating a part generated from the type of program information;
A program information receiving unit for acquiring the program information from program arrangement information separated from a digital broadcast wave;
An update determination unit that determines whether or not the program information has been updated,
When the update determination unit determines that the program information has been updated, the part generation unit specifies a part corresponding to the type of the updated program information from the update information, and the part generation unit Generating graphics data from the updated program information;
The display list generation unit displays the display list so that the drawing definition of the identified part draws the program guide screen using graphics data generated from the updated program information. Updated,
The drawing section generates screen data of the program guide screen according to the updated display list. A video memory for storing the graphics data;
The drawing definition indicates, for each part, the address at which the video memory stores the graphics data and the arrangement and size of the graphics obtained from the graphics data on the program guide screen.
The video memory stores graphics data generated from the updated program information,
In the display list generation unit, the drawing definition of the identified part is generated from an address at which the video memory stores graphics data generated from the updated program information and the updated program information. The program guide generation apparatus according to claim 1, wherein the display list is updated so as to indicate an arrangement and a size of graphics obtained from graphics data on the program guide screen. The program guide generation device according to claim 2, further comprising a display unit that displays the program guide screen based on the screen data. Even when the display section is not displaying the program guide screen,
The program information receiving unit acquires the program information,
The update determination unit determines whether or not the program information has been updated,
The parts generation unit generates graphics data of the identified part from the updated program information when the update determination unit determines that the program information has been updated,
The video memory stores graphics data generated from the updated program information,
The program list generation device according to claim 3, wherein the display list generation unit updates the display list. The update information further includes update frequency information indicating an update frequency of the parts,
The display list generation unit generates the display list so that the part with the lower update frequency is closer to the top,
5. The program guide generating apparatus according to claim 1 , wherein the drawing unit draws the parts stored in the display list in order from the top . 6. The program table generation according to claim 5, wherein the part generation unit makes at least a part of graphics given from graphics data of a part arranged in an upper layer of graphics data of a certain part transparent. apparatus. An operation receiving unit that receives an input of a scroll operation;
The display list generation unit updates the display list by changing an arrangement of graphics obtained from the graphics data on the program guide screen according to a scroll direction and a scroll amount of the scroll operation. The program guide generating device according to any one of claims 2 to 6, wherein the program guide generating device is characterized in that: An overall control unit for calculating the scroll direction and the scroll amount from the start coordinates of the scroll operation, the intermediate coordinates during the scroll operation, and the end coordinates after the scroll operation received by the operation reception unit; The program guide generating device according to claim 7, further comprising: Part generation process for generating graphics data for the parts that make up the program guide screen,
A display list generating step for generating a display list including a drawing definition for each part showing a definition for drawing the program guide screen using the graphics data;
A drawing process for generating screen data of the program guide screen using the graphics data according to the drawing definition;
A program information receiving process for acquiring program information necessary for configuring the program guide screen from program arrangement information separated from digital broadcast waves;
An update determination process for determining whether or not the program information has been updated;
Part identification information indicating the type of program information necessary for configuring the program guide screen and parts generated from the type of program information when it is determined that the program information has been updated in the update determination process If, from the update information including, to identify parts corresponding to the type of the updated program information, and parts updating step of the graphic data of the part that the identified generated from program information the update,
A display list update process for updating the display list so that the drawing definition of the identified part is to draw the program guide screen using graphics data generated from the updated program information; ,
And a drawing update process for generating screen data of the program guide screen in accordance with the updated display list. The drawing definition indicates, for each part, an address at which the video memory stores the graphics data, and an arrangement and size of the graphics obtained from the graphics data on the program guide screen.
The video memory further comprises a storing step of storing graphics data generated from the updated program information;
In the display list update process, the drawing definition of the identified part is generated from an address at which the video memory stores graphics data generated from the updated program information and the updated program information. The method according to claim 9, wherein the display list is updated so as to indicate an arrangement and a size of graphics obtained from graphics data on the program guide screen. Further comprising a display step of displaying the program guide screen based on the screen data;
The program guide generation method according to claim 10. In the display process, even when the program guide screen is not displayed,
The program guide generation according to claim 11, wherein the program information reception process, the update determination process, the parts update process, the storage process, and the display list generation process are performed. Method. The update information further includes update frequency information indicating an update frequency of the parts,
In the display list generation process, the display list is generated so that the part with the lower update frequency is closer to the top,
13. The program guide generation method according to claim 9 , wherein the drawing update process draws the parts stored in the display list in order from the top . The program table generation method according to claim 13, wherein in the part generation process, at least a part of a part arranged in an upper layer of a part is made transparent. An operation reception process for receiving an input of a scroll operation;
The display list update process updates the display list by changing the arrangement of graphics obtained from the graphics data on the program guide screen according to the scroll direction and scroll amount of the scroll operation. The program guide generation method according to claim 10, wherein the program guide generation method is a program guide generation method. The method further includes a calculation step of calculating the scroll direction and the scroll amount from the start coordinates of the scroll operation, the intermediate coordinates during the scroll operation, and the end coordinates after the scroll operation are received. The program table generation method according to claim 15, wherein:

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