JP2004235776A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver superior in convenience of channel selection. <P>SOLUTION: A CPU 13 receives program information of broadcast of respective mediums from a digital broadcast wave through a demultiplexer 3 and stores program information in a memory 14. When the CPU 13 detects that a medium mini guide key of a remote control transmitter 10 is depressed in a reception state of television broadcast, for example, it reads program information of data broadcast being a medium except for a television, creates a medium program mini guide of data broadcast and performs a processing for displaying the guide by using an OSD circuit 12 and a part of a received video screen. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to a digital broadcast receiving device for receiving digital broadcast.
[0002]
[Prior art]
A digital broadcast receiving device that receives digital broadcasts using satellites and terrestrial waves selects an arbitrary broadcast wave from a plurality of broadcast waves received through a dedicated antenna or a terrestrial antenna with a tuner, and selects the selected broadcast wave. An arbitrary channel is selected from a plurality of channels included in the wave by demultiplex processing, a digital signal of the selected channel is extracted, and a video / audio signal is output by decoding the digital signal.
[0003]
In such digital broadcasting, program information is transmitted in addition to transmitting video and audio in the same manner as conventional analog broadcasting. The program information includes various information such as a program name, a program start time, a program continuation time, program content information, and program genre information. On the receiving device side, an EPG (Electronic Program) using an OSD (On Screen Display) function is provided. The Guide display function allows a user to select a desired program from multi-channel broadcasts (see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-29087
By the way, in digital broadcasting, broadcasting of a plurality of media such as television broadcasting, data broadcasting, and radio broadcasting is performed. To select a program desired by a user from each of these media, select a program on the EPG. Besides, for example, a direct key such as a “TV” key and a “data” key provided on a remote control transmitter, a media key, and the like are used. By operating the media key, it is possible to switch the media to be received cyclically, for example, television broadcasting → data broadcasting → radio broadcasting → television broadcasting. Then, for example, by operating the UP / DOWN key in a state where the radio broadcast is selected, an arbitrary channel can be selected in the radio broadcast.
[0006]
[Problems to be solved by the invention]
However, in the above-described conventional technology, for example, it is not possible to confirm a program of another medium (data broadcast or radio broadcast) while watching a television broadcast, and the screen being viewed is temporarily switched to an EPG screen or a media key is not displayed. Thus, other media broadcasts must be received and confirmed by such operations, and there is a complaint that the convenience of channel selection is poor.
[0007]
The present invention has been made in view of the above circumstances, and has as its object to provide a digital broadcast receiving apparatus that is excellent in channel selection convenience.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a digital broadcast receiving apparatus according to the present invention includes a storage unit for acquiring and storing program information of each media broadcast from a digital broadcast wave, and a program currently being viewed when a predetermined key is operated. Means for superimposing and displaying a media program guide created based on program information of a broadcast of a medium different from the broadcast on the received video.
[0009]
With the above configuration, for example, when the predetermined key is operated while watching a television broadcast, a media program guide of a medium other than the television, such as a data broadcast, is displayed on the received video screen. In addition, since it is possible to check programs of other media while watching TV programs, the convenience of channel selection is improved.
[0010]
Preferably, the program specified by the user on the media program guide is received. Here, when the user decides to view a program of another medium while watching the program mini-guide, for example, the user inputs a channel number written in each program column of the media program guide using the numeric keypad of the remote control transmitter. As described above, a configuration in which a program specified by the user on the media program guide is received as described above allows a desired program to be selected with a simple operation (less key operations). .
[0011]
Each time the predetermined key is operated, the media program guide including the media currently being received may be sequentially switched and displayed. According to this, for example, every time a predetermined key is pressed during viewing of a television broadcast, the media can be switched cyclically and the media program guide can be displayed on the screen, for example, data broadcast → radio broadcast → television broadcast → data broadcast. it can. Further, each time the predetermined key is operated, the media program guide excluding the media currently being received may be sequentially switched and displayed. According to this, for example, every time a predetermined key is pressed while watching a television broadcast, the media can be switched and the media program guide can be displayed on the screen as in data broadcast → radio broadcast → data broadcast → radio broadcast.
[0012]
The configuration may be such that the number of programs presented in the media program guide is determined based on user settings.
[0013]
A means for storing a user's viewing history, a configuration for determining a program presented by a media program guide with reference to the user's viewing history, or a means for registering a user's favorite program; A configuration may be such that a program to be presented by the media program guide is determined with reference to the favorite program setting.
[0014]
The program presented by the media program guide may be scroll-displayed by operating the direction keys.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Here, a case where a user watches digital terrestrial broadcasting is illustrated. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment. FIG. 2 (a) is an explanatory diagram exemplifying a media program mini guide setting screen, and FIG. 2 (b) is a media program mini guide. Is displayed on the received video screen, and FIG. 3 is a flowchart for explaining a process related to the media program mini guide.
[0016]
In FIG. 1, a terrestrial antenna 1 is arranged outdoors in a predetermined direction, and receives a terrestrial digital broadcast signal. The terrestrial antenna 1 supplies a received signal to a terrestrial digital tuner 2.
[0017]
The terrestrial digital tuner 2 extracts a signal of a specific frequency from high-frequency digital modulation signals including video and audio data. The terrestrial digital tuner 2 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, and demodulates a selected digital modulation signal to output a transport stream.
[0018]
The demultiplexer (DEMUX) 3 separates the transport stream into a video stream of MPEG2 (Moving Picture Experts Group2), an audio stream, and a PSI / SI (Program Specific Information / Service Information). The demultiplexer 3 supplies the video stream and the audio stream to the AV decoder 4, and supplies program information (program name, program start time, program content information, etc.) included in the PSI / SI to the CPU 13. Note that a plurality of channels are multiplexed in the transport stream, and a process for selecting an arbitrary channel from among these is performed by selecting a packet ID in the transport stream from the PSI / SI. This is possible by extracting data such as whether the data is multiplexed. Also, the selection of the transport stream can be performed based on the PSI / SI information.
[0019]
The AV decoder 4 includes a video decoder that decodes a video stream and an audio decoder that decodes an audio stream. The video decoder obtains a quantization coefficient and a motion vector by decoding the input variable-length code, and performs inverse DCT transform, motion compensation control based on the motion vector, and the like. The audio decoder decodes the input coded signal to generate audio data. The video data generated by the decoding is output to the video processing circuit 5, and the audio data is output to the audio processing circuit 6.
[0020]
The video processing circuit 5 receives the video data from the AV decoder 4, performs D / A conversion, and converts the data into, for example, a composite video signal. The audio processing circuit 6 receives the audio data output from the AV decoder 4 and performs D / A conversion to generate, for example, a right (R) sound analog signal and a left (L) sound analog signal.
[0021]
The video output circuit 7 and the audio output circuit 8 include an output resistor, an amplifier, and the like. The AV output terminal 9 is provided with an output unit (a set of left and right audio output terminals, a video output terminal, and the like). The output unit is provided with a video / audio code 17 and a monitor including a picture tube 16a and a speaker 16b. 16 are connected.
[0022]
The OSD (on-screen display) circuit 12 outputs to the adder 20 video data based on character information and color information instructed by the CPU 13 to output. The adder 20 performs a process of incorporating the video data into the received video data output from the AV decoder 4. The OSD circuit 12 can display a menu screen, an EPG screen, a media program mini guide, and the like.
[0023]
The remote control transmitter 10 has various keys and sends various commands to the broadcast receiving device 30. When the keys are operated, a signal light (remote control signal) indicating a command corresponding to the key is emitted. Sent from the department. The remote control light receiver 11 receives the signal light, converts the signal light into an electric signal, and supplies the electric signal to the CPU 13. The remote control transmitter 10 is provided with a media mini guide key (hereinafter, referred to as an MMG key) used to display a media program mini guide.
[0024]
The memory (for example, RAM, EEPROM, flash memory, etc.) 14 stores user setting information in addition to program information for displaying an EPG screen and a media program mini guide.
[0025]
The CPU 13 performs overall control of the digital broadcast receiving apparatus 30, and particularly executes processing relating to a media program mini guide as processing according to the present invention.
[0026]
The user operates the remote control transmitter 10 to select, for example, the item of “media program mini guide setting” from the menu screen to display the program mini guide setting screen illustrated in FIG. 2A. Here, the number of presentation channels (number of programs) of the media program mini guide is set. Also, the user can set the media priority of the media program mini-guide. The user input information is stored in the memory 14 by the CPU 13 as user setting information. At the time of shipment from the manufacturer, for example, the number of channels may be set to “3” and the priority order may be set to “television broadcasting → data broadcasting → radio broadcasting” as default values of the setting information.
[0027]
When detecting depression of the MMG key provided on the remote control transmitter 10, the CPU 13 displays a media program mini-guide using a part of the received video screen. FIG. 2B is an explanatory diagram exemplifying a state in which a media program mini-guide related to data broadcasting is displayed while viewing a television broadcast. In FIG. 2B, a television broadcast currently being viewed by the user is displayed on the entire screen, and a media program mini-guide is displayed at the bottom of the screen. The media type of the media program mini-guide is displayed in the upper part of the media program mini-guide area, and it can be seen that the media program mini-guide related to “data broadcasting” is currently displayed. Also, the names of programs currently being broadcast on the three channels of ch700, ch701, and ch744 are displayed.
[0028]
Further, when detecting the press of the UP / DOWN key of the remote control transmitter 10, the CPU 13 performs a process of changing the color of the program column on the media program mini guide or performing scroll display. When detailed program information has been acquired for the program being presented, a process of writing a “description” mark at the right end of the corresponding program column is performed. When the CPU 13 detects that the “description” key provided on the remote control transmitter 10 is pressed, the CPU 13 performs a process of displaying detailed information of the program on the screen. That is, when the CPU 13 receives a remote control signal for pressing the “description” key, the CPU 13 reads out the program detailed information on the program whose color has been changed on the media program mini guide from the memory 14, and displays this on the screen via the OSD circuit 12. Perform
[0029]
FIG. 3 is a flowchart illustrating a process related to the media program mini guide. When the MMG key provided on the remote control transmitter 10 is pressed during the broadcast viewing (YES in step S1), the CPU 13 reads the user setting information from the memory 14, and the first priority medium and the currently received broadcast are displayed. It is determined whether the media are the same (step S2). If they are the same, the process proceeds to step S5. If they are not the same, the program information on the medium of the first priority is read from the memory 14, a media program mini guide is generated, and is superimposed on the received video by the OSD circuit 12. Is displayed (step S3).
[0030]
Further, the CPU 13 monitors whether the MMG key has been pressed again (step S4). If the MMG key has been pressed, the CPU 13 obtains the medium having the next priority from the user setting information (step S5) and receives the medium. It is determined whether or not the current broadcast is the same media (step S6). If they are the same (YES in step S6), the process returns to step S5, and the media having the next highest priority is compared with the broadcast media being received. On the other hand, if the media are not the same (NO in step S6), a media program mini guide relating to the media of the next priority is displayed (step S7).
[0031]
Further, the CPU 13 monitors whether or not the cancel key is pressed (step S8). When the key is pressed, the display of the media program mini guide is turned off (step S9). Further, the CPU 13 monitors whether or not the enter key has been pressed (step S10), and if not, returns to step S4. When the enter key is pressed, the tuner 2 is controlled with reference to the program information of the program column selected on the media program mini guide, and the receiving process of the program is executed (step S11). finish.
[0032]
In the above process, the media program mini guide is not displayed for the broadcast media being received (TV broadcast in the above example), but the present invention is not limited to this. For example, “data broadcast → radio broadcast → TV broadcast → data broadcast” ... ”May be sequentially switched and displayed, including the broadcast media being received. In the above description, the display of the program mini-guide is turned off by pressing the cancel key. However, for example, as in “TV broadcast → data broadcast → radio broadcast → display OFF → TV broadcast ...” The display may be turned off when the display of the program mini-guide has been completed for all media.
[0033]
Also, the channels (programs) presented in the media program mini-guide are not limited to the ones with the smallest channel numbers in the media. For example, the viewing history information of the user may be stored in the memory 14, and the past viewing history in the time zone when the MMG key is pressed may be referred to, and the program may be presented in the order of the number of times of viewing or the viewing time. . In addition, information on a user's favorite program (for example, program name, channel, genre, etc.) is stored in the memory 14, and the program information of the corresponding media is searched by referring to the information, and the searched program is searched. May be presented.
[0034]
【The invention's effect】
As described above, according to the present invention, it is possible to refer to a guide regarding a program of another medium while viewing a program, so that it is possible to improve the convenience of channel selection.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a digital broadcast receiving apparatus according to an embodiment of the present invention.
FIG. 2A is an explanatory diagram illustrating a program mini-guide setting screen, and FIG. 2B is an explanatory diagram illustrating a state where a program mini-guide is displayed on a screen during viewing.
FIG. 3 is a flowchart illustrating processing relating to a program mini-guide.
[Explanation of symbols]
1 antenna 2 tuner 3 demultiplexer (DEMUX)
4 AV decoder 12 OSD circuit 13 CPU
14 memory

Claims (8)

Storage means for acquiring and storing program information of each media broadcast from a digital broadcast wave, and a media program guide created based on broadcast program information of a media different from the currently viewed broadcast when a predetermined key is operated And a means for displaying the superimposed image on a received video. 2. The digital broadcast receiving apparatus according to claim 1, wherein a program specified by a user on a media program guide is received. 3. The digital broadcast receiving apparatus according to claim 1, wherein each time the predetermined key is operated, a media program guide including a currently received medium is sequentially switched and displayed. Digital broadcast receiver characterized by the following. 3. The digital broadcast receiving apparatus according to claim 1, wherein each time the predetermined key is operated, a media program guide excluding a media currently being received is sequentially switched and displayed. Digital broadcast receiver characterized by the following. 5. The digital broadcast receiving apparatus according to claim 1, wherein the number of programs presented in the media program guide is determined based on a user setting. The digital broadcast receiving apparatus according to any one of claims 1 to 5, further comprising: means for storing a user's viewing history, wherein a presentation program of a media program guide is determined with reference to the user's viewing history. A digital broadcast receiving device, comprising: The digital broadcast receiving apparatus according to any one of claims 1 to 5, further comprising means for registering a user's favorite program, and a program presented by a media program guide by referring to the registered favorite program setting. A digital broadcast receiving apparatus configured to determine 8. The digital broadcast receiving apparatus according to claim 1, wherein a program presented by a media program guide is scroll-displayed by operating a direction key.

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