JP2004229160A - Digital broadcasting receiving device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem and print contents of data broadcasting beautifully: when data broadcasting is received by a digital broadcasting receiving device and its contents are printed, an image with resolution of approx 100dpi has had to be used because printing data have been produced by downloading the contents on the display screen as they are. <P>SOLUTION: A printing data generating means 301 decodes data for data broadcasting separated by a demultiplexer 202 by a data broadcasting decoder 210, and stores image data for printing processed for printing layout as printing data in a printing data storage means 302. Upon reception of a printing instruction from the CPU 207, the printing data generating means 301 outputs the contents stored in the printing data storage means 302 to a printer. When moving picture information is included for screen display, a still image showing characteristic contents of the moving picture is used in the moving picture in the printing layout. When there is a voice explanation, the explanation is added to the printing layout as character information. In addition, in the still picture, image contents with higher resolution than the image contents for screen display or a plurality of still images are used for the printing layout. As for characters, a font of higher precision than a font used for screen display is used. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digital broadcast receiving apparatus that receives and prints digital broadcast data (MPEG2 transport stream).
[0002]
[Prior art]
Conventionally, a viewer of a digital television broadcast operates an IRD (Integrated Receiver / Decoder) using a remote controller or the like to select a channel to be received. The broadcast data includes video, audio, data broadcast, and other control data, and only data of a specified channel is sorted out of the data and decoded.
[0003]
FIG. 2 shows a schematic block diagram of a conventional IRD. Reference numeral 201 denotes a broadcast receiving unit that receives digital television broadcast signals such as satellite broadcasts, CATV, and terrestrial waves, demodulates and corrects errors, and outputs an MPEG2 transport stream (hereinafter, referred to as TS). A demultiplexer 202 separates the TS into video data, audio data, and data streams based on a PID (packet ID). An MPEG video decoder 203 decodes the MPEG video signal separated by the demultiplexer 202. 204 combines an image drawn based on the video signal decoded by the MPEG video decoder 203, the display data generated by the CPU 207, and the display data generated by the data broadcast decoder 210 into a signal format suitable for the display. This is a display data generating unit to be converted.
[0004]
An MPEG audio decoder 205 decodes the MPEG audio signal separated by the demultiplexer 202. Reference numeral 206 denotes a D / A converter for converting a digital audio signal decoded by the MPEG audio decoder 205 into an analog signal. A CPU (Central Processing Unit) 207 decodes the data signal separated by the demultiplexer 202 and outputs the decoded data signal to the display data generation unit 204 in the case of information to be displayed. The CPU 207 also controls each unit.
[0005]
Reference numeral 208 denotes an IC card reader including a CPU, a ROM, a RAM, and the like (not shown), and a condition for separating the encrypted TS by the demultiplexer 202 using a decryption key and a decryption program included in the IC card. Null access module (CAM). Reference numeral 209 denotes a channel selection unit for selecting a channel by operating a remote controller (not shown) or the like. A data broadcast decoder 210 decodes the data signal separated by the demultiplexer 202.
[0006]
In order for a user to watch digital television broadcasts, the TS must be decoded into video, audio, and other data using IRD. The broadcast receiving means 201 receives, demodulates, and corrects errors in digital television broadcast signals such as satellite broadcasts, CATV, and terrestrial waves. The demultiplexer 202 separates the output signal of the broadcast receiving means 201 into an MPEG video signal, an MPEG audio signal, a data signal for data broadcasting, and other data signals. In the case of an encrypted TS, a decryption key and a decryption program of the CAM 208 are required.
[0007]
The MPEG video decoder 203 decodes a video signal compressed by the MPEG system and sends the decoded video signal to the display data generation unit 204. The display data generation means 204 converts the signal into a signal format suitable for the display and outputs it. The MPEG audio decoder 205 decodes an audio signal compressed by the MPEG system and supplies the decoded audio signal to the D / A converter 206. The D / A converter 206 converts an input digital signal into an analog signal and outputs the analog signal as a left channel and right channel audio signal.
[0008]
The data broadcast decoder 210 interprets a BML (Broadcasting Markup Language) document based on the data of the data broadcast, and the interpretation result is converted into image data by the display data generation unit 204 and displayed on the display.
[0009]
When a viewer prints the display content, a method of capturing an image from a video output signal and printing the captured image is used.
[0010]
[Problems to be solved by the invention]
Conventionally, when a digital broadcast receiving device receives a data broadcast and prints the content, the content of the display screen is taken in as it is to create print data, so that an image having a resolution of about 100 dpi must be used.
[0011]
Also, data broadcasting includes moving image and / or audio contents, but if the screen is printed as it is, moving image or audio information will be insufficient.
[0012]
In the conventional example, since the layout for printing is the display screen as it is, the information included in one printed matter is scarce.
[0013]
An object of the present invention is to provide a digital broadcast receiving apparatus that solves such a problem.
[0014]
[Means for Solving the Problems]
In order to solve such a problem, according to the present invention, when printing the contents of a data broadcast that a user is watching, by separately preparing image contents and a layout for printing, It is possible to obtain a print image with high resolution and a large amount of information.
[0015]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0016]
(First embodiment)
FIG. 1 shows a schematic block diagram of a satellite broadcasting system to which the present invention is applied. 1 is an IRD that receives a broadcast and outputs a reception result, 2 is a printer that performs printing based on the print data generated by the IRD 1, and 3 outputs video and audio of a program output from the IRD 1. The monitor 4 is a receiving antenna that receives a digital television broadcast signal from the broadcast satellite 9 and inputs the signal to the IRD 1. Reference numeral 5 denotes a printer cable for connecting the IRD 1 to the printer 2, and reference numeral 6 denotes an AV cable for connecting the IRD 1 to the monitor 3 and transmitting a video / audio signal.
[0017]
Reference numeral 7 denotes a broadcast station that encodes video, audio, and data for data broadcasting by the MPEG2 system, and multiplexes and transmits each elementary stream and other control data to a TS. Reference numeral 8 denotes a transmitting antenna for transmitting a TS from the broadcasting station 7 to the broadcasting satellite 9. Reference numeral 9 denotes a broadcasting satellite that receives the TS transmitted from the broadcasting station 7 and transmits the TS to the IRD 1 as a broadcasting signal.
[0018]
The broadcasting station 7 produces a digital television program containing data for data broadcasting including control information for printing and image content, and transmits a TS to the broadcasting satellite 9 using the transmission antenna 8. The IRD 1 receives a broadcast signal transmitted from a broadcast satellite 9 by a receiving antenna 4, separates TS, decodes each data, outputs a video / audio signal to a monitor 3 via an AV cable 6, and performs data broadcasting. Is output to the monitor 3. When the user instructs printing of the currently viewed data broadcast using a remote controller (not shown) or the like, the IRD 1 outputs print data to the printer 2 through the printer cable 5.
[0019]
FIG. 3 is a schematic block diagram of the IRD 1. The same components as those of the conventional example shown in FIG. 2 are denoted by the same reference numerals. Reference numeral 301 denotes print data obtained by decoding the data broadcast data separated by the demultiplexer 202 by the data broadcast decoder 210 and assigning the print image data to print data, storing the print image data in the print data storage unit 302, and printing from the CPU 207. A print data generation unit that sends the contents stored in the print data storage unit 302 to the printer 2 upon receiving the command. Reference numeral 302 denotes a print data storage unit that stores the latest print data generated by the print data generation unit 301.
[0020]
When printing the data broadcast, the viewer issues a print instruction to the IRD 1 using a remote controller (not shown) or the like. Prior to a print instruction from the viewer, the data broadcast decoder 210 determines a screen display layout based on the description content of the BML document to generate image data to be displayed on the monitor 2, and decodes the content. As for print image data for printing, a print layout is determined based on the description for printing of the BML document, the content is decoded, and the print image data corresponding to the display image data is sent to the print data generation unit 301. .
[0021]
The main difference between the screen display layout and the print layout is that, when moving image information is included for screen display, the printing layout allocates a still image indicating the characteristic content of the moving image to this moving image portion. In addition, when there is a description by voice, the print layout can add this description as character information. Further, also for a still image, an image content having a higher resolution than an image content for screen display or a plurality of still images can be used for a print layout. For characters, a font that is higher definition than the font used for screen display is specified and used.
[0022]
The print data generation unit 301 generates print data using the print image data that has been subjected to this processing for printing, stores the print data in the print data storage unit 302, and sends the print data to the printer 2 according to a print instruction. Send.
[0023]
With such a configuration, the viewer can print the content of the data broadcast being viewed as a more detailed and more beautiful image.
[0024]
FIG. 4 shows an example of a display image of the display data, and FIG. 5 shows an example of a print image of the print data corresponding to FIG. 401 to 406 are contents displayed by data broadcasting. 407 to 411 are print contents.
[0025]
Reference numeral 401 denotes a moving image, which requires processing such as capture for printing. For printing, a still image group 407 corresponding to a moving image prepared separately is used.
[0026]
Reference numeral 402 denotes a still image which can be used for printing as it is, but uses a still image 408 having a higher resolution than that separately prepared for printing.
[0027]
Reference numeral 403 denotes a data broadcasting title, which uses a large font. Another font 409 is used for printing.
[0028]
404 is character information. It has been replaced with another font 410 for printing.
[0029]
Reference numerals 405 and 406 are displays for performing screen operations, and are omitted for printing.
[0030]
411 is the content that does not exist in the screen display but has been described in the data broadcast audio. It is included as character information for printing.
[0031]
As described above, in order to print more information more neatly, image files and fonts are replaced and contents are added according to the printing description of the BML document to generate printing image data.
[0032]
(Second embodiment)
The second embodiment of the present invention is characterized in that a printing description of a BML document is used and only printing is performed without displaying a screen. The system configuration and the internal configuration of the IRD 1 are the same as in the first embodiment.
[0033]
The printing description is used in the BML document created on the transmitting side such as a broadcasting station, and the data broadcast decoder 210 of the IRD 1 corresponding to the printing judges the printing description and prints the layout, image and font written in the printing description. Is used to generate print data.
[0034]
At present, texts used in data broadcasting are sometimes handled by using the still image data designed by the transmitting side without using the fonts provided in the IRD1. However, the still image data of this character has a resolution of about 100 dpi, and the resolution is too low for printing by the printer 2, so that it is impossible to produce a printed matter that fully demonstrates the performance of the printer 2. In addition, the image used in the data broadcasting has a resolution of about 100 dpi, which is too low for the printer 2 to use. Therefore, in order for the transmitting side to exert more expressive power, it is desirable to separately prepare for display and for printing using the description for printing. In the case of the IRD 1 that is not compatible with printing, the portion of the description for printing may be ignored, thereby maintaining compatibility.
[0035]
This embodiment will be described using an example of data broadcasting for obtaining a coupon. FIG. 6 shows a display example of a data broadcast. A selection button group 501 includes options that can be selected using a remote controller or the like, and a print description corresponds to each option. Reference numeral 502 denotes one of the selection button groups 501, and here, is a selection button corresponding to a coupon for a canned beverage. A return button 503 is used to return to the previous screen of the link on the tree.
[0036]
The viewer can select any of the selection button group 501 and the return button 503 on this page by using a remote controller (not shown) or the like. If a desired coupon exists, one of the selection buttons 501 is selected and determined. To return to the previous screen, the user selects the return button 503 and decides.
[0037]
When the selection button 502 is pressed, a command for printing a coupon is executed by the data broadcast decoder 210 according to the printing description corresponding to this selection button in the BML document. This execution result is not displayed on the screen, but is output from the printer 2 as a printed matter. FIG. 7 shows an example of a print result. The printing description includes layout information, image file information, character information, font information, and the like necessary for printing.
[0038]
As described above, information that the user wants to print but does not need to display on the screen may be included in the BML document as a description for printing. Since the layout for printing can be freely set or selected independently of the display screen, it is possible to print various materials such as catalogs, guides, advertisements, texts, newspapers, and books in addition to coupons.
[0039]
(Preferred embodiment)
Hereinafter, preferred embodiments of the present invention will be listed.
[0040]
Embodiment 1 Broadcast receiving means for receiving a digital broadcast;
Separating means for separating data for data broadcasting from data received by the broadcast receiving means;
Data broadcast decoding means for decoding the content of the data broadcast being received into image data for printing,
Print data generating means for generating print data from the print image data,
Storage means for storing the print data generated by the print data generation means, wherein the print image data decoded by the data broadcast decoding means is a print image different from the video content displayed on the screen. A digital broadcast receiving device comprising a content.
[0041]
Second Embodiment The digital broadcast receiving apparatus according to the first embodiment, wherein the print video content included in the data broadcast data is a video content having a higher resolution than the video content displayed on the screen. .
[0042]
[Embodiment 3] The digital broadcast receiving apparatus according to embodiment 1, wherein the print image data decoded by the data broadcast decoding means is composed of video content having a higher resolution than the video content displayed on the screen. .
[0043]
Embodiment 4 Broadcast receiving means for receiving a digital broadcast;
Separating means for separating data for data broadcasting from data received by the broadcast receiving means in the previous period;
Data broadcast decoding means for decoding the content of the data broadcast being received into image data for printing,
Print data generating means for generating print data from the print image data,
Storage means for storing the print data generated by the print data generation means,
A digital broadcast receiving apparatus, wherein the data broadcast decoding means interprets control information for printing.
[0044]
Fifth Embodiment A digital broadcasting system for encoding video, audio, and data broadcasting data in the MPEG2 system, and multiplexing each elementary stream and other control data into a transport stream and transmitting the multiplexed data. A data broadcasting system, wherein the data for use includes control information for printing and video content for printing.
[0045]
【The invention's effect】
As can be easily understood from the above description, according to the present invention, when printing a data broadcast being viewed, a high-resolution content to be used for printing is transmitted in advance, and the viewer is instructed to print. , It is possible to perform clean and quick printing. In addition, by using the description for printing in the BML document, printing by data broadcasting can be performed more easily.
[Brief description of the drawings]
FIG. 1 is a basic configuration diagram of a satellite broadcasting system to which an embodiment of the present invention is applied.
FIG. 2 is a schematic configuration block diagram of a conventional IRD.
FIG. 3 is a schematic block diagram of an IRD according to a first embodiment of the present invention.
FIG. 4 is an example of a display screen of a data broadcast in the first embodiment.
FIG. 5 is a printing example corresponding to FIG.
FIG. 6 is a display example of a data broadcast in the second embodiment.
FIG. 7 is a print example of a data broadcast in the second embodiment.
[Explanation of symbols]
1: IRD
2: Printer 3: Monitor 4: Receiving antenna 5: Printer cable 6: AV cable 7: Broadcasting station 8: Transmitting antenna 9: Broadcast satellite 201: Broadcast receiving means 202: Demultiplexer 203: MPEG video decoder 204: Display data generating means 205: MPEG audio decoder 206: D / A converter 207: CPU
208: Conditional access module (CAM)
209: channel selection means 210: data broadcast decoder 301: print data generation means 302: print data storage means

Claims (1)

Broadcast receiving means for receiving a digital broadcast;
Separating means for separating data for data broadcasting from data received by the broadcast receiving means;
Data broadcast decoding means for decoding the content of the data broadcast being received into image data for printing,
Print data generating means for generating print data from the print image data,
Storage means for storing print data generated by the print data generation means, wherein the print image data decoded by the data broadcast decoding means is a print image different from the video content displayed on the screen. A digital broadcast receiving device comprising a content.

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