JP2011050079A - Broadcast receiver, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce power consumption when a plurality of broadcast channels received are the same channel. <P>SOLUTION: A broadcast receiver includes: a receiving section 17 for receiving a program packet P consisting of an image/sound and a data broadcast content D1 of a designated channel; and a data broadcast receiving section 18 for receiving a data broadcast content D2 of a designated channel. When the receiving section 17 and the data broadcast receiving section 18 do not receive the same channel while a switching section 20 is set in a reception input mode selecting a program packet P provided from the receiving section 17, an image obtained by decoding the program packet P consisting of the image/sound received by receiving section 17 is synthesized to a data broadcast screen DG so as to be displayed on a screen, wherein the data broadcast screen DG is formed based on the data broadcast content D2 received by the data broadcast receiving section 18. On the other hand, when the same channel is received, a power supply of the data broadcast receiving section 18 is turned off. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a broadcast receiving apparatus and a program for receiving a broadcast channel.

  In digital broadcasting, as shown in FIG. 5, video V, audio A, and data content D are all divided into packet units, and MPEG2-TS (hereinafter referred to as transport stream TS) defined in the ISO / IEC13818-1 standard. Are multiplexed and transmitted in a multiplexed stream format. Note that the data content D that is data-broadcasted on the transport stream TS includes content linked to programs such as subtitles and superimposing characters, and storage service content such as weather forecasts and news.

  As an apparatus for receiving such a digital broadcast, for example, Patent Document 1 discloses a data stream obtained by receiving a digital broadcast signal having a desired modulation frequency and a data stream of a digital broadcast signal input by an external receiving apparatus. In addition, while playing back the contents of the channel included in one data stream in real time, the contents of the channel included in the other data stream are recorded on the medium, so that one of the two programs with different channels can be viewed. However, a broadcast receiving apparatus for recording the other program is disclosed.

JP 2001-285729 A

The broadcast receiving device disclosed in Patent Document 1 only records one program of two broadcasts with different channels while recording the other program, so that a program composed of video V and audio A of a certain channel, There is a problem that it is not possible to simultaneously view data broadcasts of other channels.
In addition, when two broadcasts are received, there is a problem that even if both channels are the same, power is wasted by continuing to receive both receptions as they are.

  It is an object of the present invention to reduce power consumption when a plurality of broadcast channels received are the same channel.

  The invention of claim 1 is a broadcast receiving apparatus for receiving a broadcast channel, wherein the first receiving means for receiving a first broadcast channel, the second receiving means for receiving a second broadcast channel, and the first A discriminating means for discriminating whether or not the broadcast channel received by the receiving means and the broadcast channel received by the second receiving means are the same channel; and when the discriminating means discriminates that they are not the same channel, The reception by the receiving means and the reception by the second receiving means are both enabled and controlled to receive each broadcast channel. When the determining means determines that they are the same channel, the first receiving means Receiving control means for receiving only a broadcast channel with only reception enabled and controlling to turn off reception by the second receiving means, That.

According to a second aspect of the present invention, when both the reception by the first receiving means and the reception by the second receiving means are enabled and each broadcast channel is received, the received broadcast contents are simultaneously displayed on the display screen. And a display control means for controlling to do so.
According to a third aspect of the present invention, there is provided first change means for arbitrarily changing a broadcast channel received by the first reception means, and second change means for arbitrarily changing a broadcast channel received by the second reception means. Further, the determination means is characterized in that the determination is performed when a broadcast channel is changed by the first changing means or the second changing means.

  The invention of claim 4 is a receiving means for receiving an arbitrarily selected broadcast channel, an external input means for inputting a broadcast channel received by an external broadcast receiving device, a broadcast channel received by the receiving means, Determining means for determining whether or not the broadcast channel input from the external input means is the same channel; and when the determining means determines that the broadcast channel is not the same channel, reception by the receiving means and input by the external input means And control means for controlling the display of the contents of the respective broadcast channels to be effective, and controlling the reception by the receiving means to be turned off when the determining means determines that they are the same channel. It is characterized by doing.

  According to the present invention, when a plurality of broadcast channels to be received are the same channel, power consumption can be reduced by automatically turning off reception of one broadcast channel.

It is a block diagram which shows the structure of the broadcast receiving apparatus 100 by one Embodiment of this invention. It is a figure which shows an example of a data broadcasting screen. It is a flowchart which shows operation | movement of a main routine. It is a flowchart which shows operation | movement of a main routine. It is a figure for demonstrating the structure of transport stream TS of digital broadcasting.

(Embodiment)
Embodiments of the present invention will be described below with reference to the drawings.
(1) Configuration FIG. 1 is a block diagram showing a configuration of a broadcast receiving apparatus 100 according to an embodiment of the present invention. In this figure, the CPU 10 executes various control programs stored in the ROM 11 to control each part of the apparatus. The operation of the CPU 10 relating to the gist of the present invention, that is, the operation of the main routine described later will be described later. The ROM 11 stores various control programs executed by the CPU 10, control data, and the like. The various control programs stored in the ROM 11 include a main routine described later. The RAM 12 is used as a work area for the CPU 10 and temporarily stores various register / flag data.

  The operation unit 13 includes various operation switches and generates a switch event corresponding to the operated switch. As typical switches arranged in the operation unit 13, a mode switch for specifying a switching operation of a switching unit 20 described later, a data broadcast switch for specifying a selection operation of a selecting unit 19 described later, and a channel number for viewing are set. There are a channel switch and a data broadcast channel switch for setting a channel number of a received data broadcast. Processing operations corresponding to these switch operations will be described later.

  The external input unit 14 receives a program packet of a channel received by an external broadcast receiving apparatus. The program packet EP input to the external input unit 14 is supplied to the switching unit 20 under the control of the CPU 10. The power supply 15 supplies a drive voltage to each part of the apparatus. The power control unit 16 performs on / off control of the driving power supplied to the receiving unit 17 and the data broadcast receiving unit 18 in accordance with an instruction from the CPU 10. The receiving unit 17 selects and receives a broadcast signal of a channel designated by the CPU 10 via the antenna ANT1 and performs OFDM demodulation, and a program packet P composed of video / audio of the designated channel from the transport stream TS obtained thereby. The data broadcast content D1 is separated and extracted and output.

  The data broadcast receiving unit 18 selects and receives the data broadcast signal of the channel designated by the CPU 10 via the antenna ANT2 and performs OFDM demodulation, and extracts the data broadcast content D2 of the designated channel from the transport stream TS obtained thereby. And output. The selection unit 19 selects either the data broadcast content D1 supplied from the reception unit 17 or the data broadcast content D2 supplied from the data broadcast reception unit 18 in accordance with an instruction from the CPU 10 and outputs the selected data broadcast content D1 to the next stage. The switching unit 20 selects either the program packet P supplied from the receiving unit 17 or the externally input program packet EP in accordance with an instruction from the CPU 10, and includes the selected program packet P (or program packet EP). The video data in the MPEG-2 format is output to the image synthesis unit 22 and the audio data in the MPEG-2 AAC format is output to the audio reproduction unit 23, respectively.

  The data broadcast image generation unit 21 generates a data broadcast screen DG that displays the data broadcast content D1 (or data broadcast content D2) selected by the selection unit 19 on the screen. Here, an example of the data broadcast screen DG will be described with reference to FIG. The data broadcast screen DG illustrated in FIG. 2 shows a screen configuration when storing service content such as weather forecasts and news is displayed on the screen. As shown in this figure, the data broadcast screen DG includes a headline display area, a video display area, and a data broadcast content display area. In the headline display area, the headline (display item) of the data broadcast content D1 (or data broadcast content D2) supplied from the selection unit 19 is displayed. The detailed contents of the headline (display item) selected by the user operation in the headline display area are displayed on the screen in the data broadcast content display area.

  The image synthesizing unit 22 decodes the MPEG-2 format video data supplied from the switching unit 20, and the decoded video is displayed on the data broadcast screen DG (see FIG. 2) generated by the data broadcast image generating unit 21. The image is combined with the video display area and output to the display unit 24. The audio reproduction unit 23 decodes the MPEG-2 AAC format audio data supplied from the switching unit 20 and reproduces the audio. The display unit 24 displays the combined image output from the image combining unit 22 on the screen.

(2) Operation Next, the operation of the CPU 10 will be described with reference to FIGS. When the power of the broadcast receiving apparatus 100 is powered on, the CPU 10 executes a main routine shown in FIG. 3 and proceeds to step S1 to perform initialization for initializing each part of the apparatus. Subsequently, in step S2 and subsequent steps, a processing operation corresponding to a switch event that occurs in response to a switch operation of the operation unit 13 is performed. In the following, the operation will be described separately when the “mode switch”, “data broadcast switch”, “channel switch”, and “data broadcast channel switch” according to the gist of the present invention are each operated.

<When the mode switch is turned on>
In step S2, it is determined whether or not the mode switch is turned on. When the mode switch is turned on, the determination result here is “YES”, and the process proceeds to step S3. In step S3, it is determined whether or not the mode transitioned according to the ON operation of the mode switch is the reception input mode. In the reception input mode, the determination result is “YES”, the process proceeds to step S4, the switch unit 20 is instructed to select the program packet P supplied from the reception unit 17, and the process returns to step S2. .

  On the other hand, if the mode shifted in response to the ON operation of the mode switch is the external input mode, the determination result in step S3 is “NO”, the process proceeds to step S5, and is input from the outside via the external input unit 14. After instructing the switching unit 20 to select the program packet EP, the process returns to step S2.

<When the data broadcasting switch is turned on>
In step S6, it is determined whether or not the data broadcast switch is turned on. When the data broadcast switch is turned on, the determination result here is “YES”, and the process proceeds to step S7. In step S7, the flag DHF is inverted. Subsequently, in step S8, it is determined whether or not the value of the inverted flag DHF is “1”. If the value of the inverted flag DHF is “1”, the determination result in step S8 is “YES”, and the process proceeds to step S9, where the power supply for setting the drive power supplied to the data broadcast receiving unit 18 to the on state is set. The control unit 16 is instructed.
In step S10, the image composition unit 22 is instructed to create a composite image, and the process returns to step S2. As a result, the image composition unit 22 decodes the MPEG-2 format video data supplied from the switching unit 20, and the decoded video is displayed on the data broadcast screen DG (FIG. 2) generated by the data broadcast image generation unit 21. A synthesized image synthesized in the video display area of (see) is created and output to the display unit 24 for screen display.

  On the other hand, if the value of the inverted flag DHF is “0”, the determination result in step S8 is “NO”, and the process proceeds to step S11. In step S11, the power supply control unit 16 is instructed to set the drive power supplied to the data broadcast receiving unit 18 to the off state. In step S12, the image composition unit 22 is instructed to create a composite image with only video, and the process returns to step S2. As a result, the image composition unit 22 decodes the MPEG-2 format video data supplied from the switching unit 20 and outputs only the decoded video to the display unit 24 for display on the screen.

<When channel switch operation is performed>
In step S13 shown in FIG. 4, it is determined whether or not the viewing channel has been changed by the channel switch operation. When the channel switch operation is performed, the determination result here is “YES”, and the process proceeds to step S14, the viewing channel number set by the channel switch operation is stored in the register CH, and the process proceeds to step S15. Note that the viewing channel number stored in the register CH represents a channel that the receiving unit 17 selects and receives.

  In step S15, it is determined whether or not the flag DHF is “1”, that is, whether or not the power of the data broadcast receiving unit 18 is set to ON. If the power of the data broadcast receiving unit 18 is set to OFF (when the flag DHF is “0”), the determination result is “NO”, and the process returns to step S2 (see FIG. 3) described above. On the other hand, if the power of the data broadcast receiving unit 18 is set to ON, the determination result is “YES”, and the flow proceeds to step S20 described later.

  If the channel switch operation is not performed, the determination result in step S13 is “NO”, and the process proceeds to step S16. As in step S15, whether the flag DHF is “1”, that is, It is determined whether or not the power of the data broadcast receiving unit 18 is turned on. If the power of the data broadcast receiving unit 18 is set to OFF, the determination result is “NO”, and the process returns to the above-described step S2 (see FIG. 3). On the other hand, if the power supply of the data broadcast receiving unit 18 is set to ON, the determination result is “YES”, and the process proceeds to Step S17 described later.

<When data broadcasting channel switch operation is performed>
In step S17, it is determined whether or not the data broadcast channel has been changed by operating the data broadcast channel switch. If the data broadcast channel switch operation is not performed, the determination result is “NO”, and the process returns to the above-described step S2 (see FIG. 3). However, if the data broadcast channel switch operation is performed, the determination result is “YES”. The process proceeds to step S18. In step S18, the data broadcast channel number set by the data broadcast channel switch operation is stored in the register DCH, and the process proceeds to step S19. The data broadcast channel number stored in the register DCH represents a data broadcast channel that the data broadcast receiving unit 18 selects and receives.

  In step S19, the data broadcast channel number stored in the register DCH is set in the data broadcast receiving unit 18 to instruct to change to the data broadcast channel to be received. Next, in step S20, whether or not the viewing channel number stored in the register CH and the data broadcast channel number stored in the register DCH match, that is, the receiving unit 17 and the data broadcasting receiving unit 18 are in the same channel. Is received. If the receiving unit 17 and the data broadcast receiving unit 18 are receiving the same channel, the determination result is “YES”, and the flow proceeds to step S21.

  In step S21, the power control unit 16 is instructed to set the drive power supplied to the data broadcast receiving unit 18 to an off state. Next, in step S22, after selecting the data broadcast content D1 received and output by the receiving unit 17 and instructing the selecting unit 19 to output it to the data broadcast generating unit 21 at the next stage, the above-described step S2 (see FIG. 3). Return processing to.

  On the other hand, if the receiving unit 17 and the data broadcast receiving unit 18 do not receive the same channel, the determination result in step S20 is “NO”, and the process proceeds to step S23. In step S23, the power supply control unit 16 is instructed to set the drive power supplied to the data broadcast receiving unit 18 to the ON state. In step S24, the data broadcast receiving unit 18 selects the data broadcast content D2 received and output and instructs the selection unit 19 to output the data broadcast content D2 to the next data broadcast generation unit 21, and then the above-described step S2 (FIG. 3). Return to (see).

  As described above, in the present embodiment, the receiving unit 17 that receives the program packet P composed of video / audio of the designated channel and the data broadcasting content D1, and the data broadcasting receiving unit 18 that receives the data broadcasting content D2 of the designated channel. When the switching unit 20 is set to the reception input mode for selecting the program packet P supplied from the receiving unit 17, the receiving unit 17 and the data broadcast receiving unit 18 must receive the same channel. For example, the program packet P composed of video / audio received by the receiving unit 17 is decoded on the data broadcasting screen DG (see FIG. 2) generated based on the data broadcasting content D2 received by the data broadcasting receiving unit 18. Since the video is composed and displayed on the screen, the program of the channel you are viewing and the data of other channels are displayed. It is possible to watch the broadcast program at the same time.

  In addition, when the switching unit 20 is set to the external input mode in which the program packet EP supplied from the external input unit 14 is selected, when the data broadcast receiving unit 18 is set to ON, the data broadcast receiving unit 18 receives the data packet. Since the video broadcast DG (see FIG. 2) generated based on the data broadcast content D2 is combined with the video obtained by decoding the program packet EP supplied from the external input unit 14 and displayed on the screen. The broadcasted program and the data broadcasting program of the designated channel can be viewed simultaneously.

  Furthermore, in this embodiment, when the switching unit 20 is set to the reception input mode for selecting the program packet P supplied from the reception unit 17, the reception channels of the reception unit 17 and the data broadcast reception unit 18 are the same. Then, since the drive power supply of the data broadcast receiving unit 18 is set to the off state, power consumption can be reduced.

10 CPU
11 ROM
12 RAM
DESCRIPTION OF SYMBOLS 13 Operation part 14 External input part 15 Power supply 16 Power supply control part 17 Reception part 18 Data broadcast reception part 19 Selection part 20 Switching part 21 Data broadcast image generation part 22 Image composition part 23 Audio | voice reproduction part 24 Display part

Claims (6)

A broadcast receiving device for receiving a broadcast channel,
First receiving means for receiving a first broadcast channel;
Second receiving means for receiving a second broadcast channel;
Determining means for determining whether the broadcast channel received by the first receiving means and the broadcast channel received by the second receiving means are the same channel;
When the discriminating means discriminates that they are not the same channel, the reception by the first receiving means and the reception by the second receiving means are both enabled and controlled to receive each broadcast channel, and the discriminating means If it is determined that they are the same channel, receiving control means for controlling to receive only the broadcast channel by enabling only reception by the first receiving means and to turn off reception by the second receiving means;
A broadcast receiving apparatus comprising: Display control for controlling to simultaneously display the received broadcast contents on the display screen when receiving both broadcast channels with both reception by the first receiving means and reception by the second receiving means being enabled. Means,
The broadcast receiving apparatus according to claim 1, further comprising: First changing means for arbitrarily changing a broadcast channel received by the first receiving means;
A second changing means for arbitrarily changing a broadcast channel received by the second receiving means;
The broadcast receiving apparatus according to claim 1 or 2, wherein the determination unit performs the determination when a broadcast channel is changed by the first change unit or the second change unit. Receiving means for receiving an arbitrarily selected broadcast channel;
An external input means for inputting a broadcast channel received by an external broadcast receiving device;
Determining means for determining whether the broadcast channel received by the receiving means and the broadcast channel input from the external input means are the same channel;
If it is determined by the determining means that the channels are not the same channel, the reception means and the input by the external input means are both enabled to control the display of the contents of the respective broadcast channels. Control means for controlling to turn off reception by the receiving means when it is determined to be a channel;
A broadcast receiving apparatus comprising: A program for controlling a computer of a broadcast receiving apparatus that receives a broadcast channel,
The computer,
First receiving means for receiving a first broadcast channel;
Second receiving means for receiving a second broadcast channel;
Determining means for determining whether the broadcast channel received by the first receiving means and the broadcast channel received by the second receiving means are the same channel;
When the discriminating means discriminates that they are not the same channel, the reception by the first receiving means and the reception by the second receiving means are both enabled and controlled to receive each broadcast channel, and the discriminating means If it is determined that they are the same channel, a reception control means for controlling to receive only the broadcast channel by enabling only reception by the first reception means and to turn off reception by the second reception means,
A computer-readable program designed to function as a computer. A program for controlling a computer of a broadcast receiving device,
The computer,
Receiving means for receiving an arbitrarily selected broadcast channel;
An external input means for inputting a broadcast channel received by an external broadcast receiver;
Determining means for determining whether the broadcast channel received by the receiving means and the broadcast channel input from the external input means are the same channel;
If it is determined by the determining means that the channels are not the same channel, the reception means and the input by the external input means are both enabled to control the display of the contents of the respective broadcast channels. Control means for controlling to turn off reception by the receiving means when it is determined that the channel is a channel;
A computer-readable program designed to function as a computer.

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