JP2007104346A - Receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiver for performing two-way operation for a video image content to which a user paid attention before service switching operation, even after the service switching operation is performed. <P>SOLUTION: A digital broadcast receiver 10 includes a CPU 32. When service switching operation is performed under a data broadcast fixing condition, the CPU 32 performs setting of a digital tuner 18 in accordance with the direction of the service switching operation. In a video processing circuit 44, the TV broadcast video image received by a digital tuner 16 is generated to an area A formed on a monitor 50, while a character generator 42 generates character data given by the CPU 32, on an area B formed on the monitor 50. A menu item for realizing two-way of first video image contents is generated continuously even if the part of the first video image content is replaced by part of the second video image content. In this way, even after operation of service switching, two-way operation to the first video image content can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a receiver, and more particularly to a receiver that receives, for example, interactive video content.

An example of a conventional device of this type is disclosed in Patent Document 1. According to this prior art, a digital broadcast wave of a desired channel is received and demodulated by a tuner demodulator. Media data included in the demodulated broadcast content is converted into video / audio information by a video / audio processing unit. In addition, the interactive application included in the demodulated broadcast content is converted into screen data for bidirectional communication by the data processing unit. The converted video / audio information and screen data are output from the monitor in a synthesized state.
JP 2003-289524 A [H04N 7/173, 7/16, H04H 1/02, H04M 11/00]

  However, in the prior art, there is only one tuner demodulator, and when a channel switching operation, that is, a service switching operation is performed, a bidirectional operation on a broadcast program output from the monitor before that becomes impossible.

  Therefore, a main object of the present invention is to provide a receiver capable of executing a bidirectional operation on video content that has been focused before a service switching operation even after the service switching operation.

  The receiver (10) according to the first aspect of the invention includes first and second receiving means (16, 18) for receiving the first and second video contents, respectively, and the first video content received by the first receiving means. First output means (28, 42, SW1, S1, S23) to output, and when the service switching operation is accepted from the operator, a part of the second video content received by the second receiving means is output by the first output means The second output means (30, SW1, S29) for outputting instead of a part of the first video content that is output, and the second receiving means are set in accordance with the service switching operation in relation to the output processing of the second output means. Each of the first and second video contents each having setting means (S31) received by the first and second receiving means has bidirectionality, and the first output means after the output processing of the second output means The first video content output by Other parts of the menu include menu items selected by the operator.

  The first and second video contents are received by the first and second receiving means, respectively. The first video content received by the first receiving means is received by the first output means. The second output means converts a part of the second video content received by the second reception means to a part of the first video content output by the first output means when a service switching operation is received from the operator. Output instead. The setting means performs setting according to the service switching operation to the second receiving means in relation to the output processing of the second output means.

  Here, each of the 1st and 2nd video contents received by the 1st and 2nd receiving means has bidirectionality, respectively. In addition, another part of the first video content output by the first output unit after the output process of the second output unit includes a menu item selected by the operator.

  Therefore, the menu item that realizes the bidirectionality of the first video content is continuously output even after a part of the first video content is replaced with a part of the second video content. As a result, the bidirectional operation for the first video content can be performed even after the service switching operation.

  The digital television broadcast receiver according to the invention of claim 2 is dependent on claim 1, and each of the first and second video contents respectively received by the first and second receiving means has a main video component and a sub-video component. The second output means outputs the main video component forming the second video content in place of the main video component forming the first video component.

  A digital television broadcast receiver according to the invention of claim 3 is dependent on claim 2, and the main video component and the sub video component correspond to the television broadcast and the data broadcast, respectively.

  The digital television broadcast receiver according to the invention of claim 4 is dependent on any one of claims 1 to 3, and accepting means (S7) for accepting a bidirectional operation for selecting any one of the menu items, and accepting means Further includes a transmission means (40) for transmitting the reception result corresponding to to the provider of the first video content.

  Therefore, an interactive operation for selecting any one of the other menu items of the first video content is accepted even after a part of the first video content is replaced with a part of the second video content. It is continuously accepted by the means. The transmission unit transmits the reception result corresponding to the reception unit to the provider of the first video content. Thereby, bidirectional operations are continuously accepted.

  According to this invention, the menu item that realizes the bidirectionality of the first video content is continuously output even after a part of the first video content is replaced with a part of the second video content. As a result, the bidirectional operation for the first video content can be performed even after the service switching operation.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  Referring to FIG. 1, a digital broadcast receiver 10 of this embodiment includes a remote controller 12 formed by a plurality of operation keys. When an operation of pressing a power button (not shown) among the operation keys formed on the remote controller 12, that is, a power-on operation is performed in a power-off state, the digital broadcast receiver 10 is activated and output immediately before the power-off operation is performed. The process of outputting the service that has been performed is executed. A service is a series of programs that can be broadcast as part of a schedule organized by a broadcaster.

  The antenna 14 applies a high frequency signal to the digital tuners 16 and 18, and the digital tuners 16 and 18 convert the high frequency signal into a baseband signal. Here, the receiving system constituted by the digital tuner 16, the OFDM demodulating circuit 20, the demultiplexer 24 and the MPEG decoder 28 is defined as "first system", and the digital tuner 18, the OFDM demodulating circuit 22, the demultiplexer 26 and the MPEG decoder are defined. The receiving system constituted by 30 is defined as “second system”.

  In the first system, first, the baseband signal converted by the digital tuner 16 is converted to TS (Transport Stream) by an OFDM (Orthogonal Frequency Division Multiplex) demodulating circuit 20. The demultiplexer 24 separates the converted TS into MPEG data including audio data and image data and BML (Broadcast Markup Language) document data provided by a data carousel system, and provides the MPEG data to the MPEG decoder 28 while the BML Document data is given to the CPU 32. The MPEG decoder 28 decodes the MPEG data supplied from the demultiplexer 24, inputs video data to the switch SW1, and inputs audio data to the switch SW2.

  In the second system, the baseband signal converted by the digital tuner 18 is converted to TS by the OFDM demodulation circuit 22. The demultiplexer 26 extracts MPEG data including audio data and image data from the converted TS, and provides the MPEG data to the MPEG decoder 30. The MPEG decoder 30 decodes the MPEG data given from the demultiplexer 26, inputs video data to the switch SW1, and inputs audio data to the switch SW2. That is, in the first system, BML document, video data and audio data of the program content tuned by the digital tuner 16 are generated, and in the second system, video data and audio data of the program content tuned by the digital tuner 18 are generated. The

  The CPU 32 temporarily stores the BML document data given from the demultiplexer 24 in the DRAM 36, reads the stored BML document data, performs analysis processing on the read BML document data, and executes processing based on the analysis result Then, the processing result is given to the character generator 42. Specifically, processing for converting module data included in the BML document data into various mono media such as JPEG images and PNG images is executed.

  The CPU 32 also connects the switches SW1 and SW2 to the terminals T1 and T3, respectively. At this time, when the switch SW1 is connected to the terminal T1, the video data output from the MPEG decoder 28 is input to the video processing circuit 44, and when the switch SW1 is connected to the terminal T2, it is output from the MPEG decoder 30. Video data is input to the video processing circuit 44. When the switch SW2 is connected to the terminal T3, the audio data output from the MPEG decoder 28 is input to the audio processing circuit 52, and when the switch SW2 is connected to the terminal T4, the audio data output from the MPEG decoder 30 is input. Data is input to the audio processing circuit 52.

  The audio processing circuit 52 performs D / A conversion on the audio data obtained via the switch SW 2, and the analog audio signal obtained thereby is output to the speaker 54. Thus, the sound of the quiz program is output from the speaker 54.

  The character generator 42 gives character data corresponding to the processing result given by the CPU 32 to the adder 46. The video processing circuit 44 adjusts the scale of the video data obtained via the switch SW 1 and outputs the result to the NTSC encoder 48 through the adder 46. The NTSC encoder 48 encodes the scale-adjusted video data and character data into a composite video signal, and outputs the encoded composite signal from the monitor 50.

  Thus, the television image provided by the television broadcast, that is, the main image is displayed in the area A (see FIG. 2), and the television image provided by the data broadcast, that is, the sub-image is displayed in the area B (see FIG. 2). The television video displayed in area A corresponds to the main video, and the data video displayed in area B corresponds to the sub video.

  When an operation of pressing a channel selection button (not shown) among the operation keys formed on the remote controller 12, that is, a service switching operation is performed, the television broadcast video and the data broadcast video displayed in the areas A and B on the monitor 50 are switched. Switch to TV broadcast video and data broadcast video corresponding to later services.

  Specifically, when the selected service is an interactive quiz program as shown in FIG. 2, the CPU 32 performs tuning focusing on this baseball broadcast in order to execute tuning processing by the first system 16. Set to. According to this tuning, the digital tuner 16 converts the high-frequency signal obtained from the antenna 14 into a baseband signal, and the processing in the first system is executed in the same manner as described above. As a result, the interactive quiz program shown in FIG. 2 is displayed. This quiz program is formed by a television broadcast that is unidirectionally distributed from a broadcasting station and a response-type data broadcast related to the quiz program, that is, a bidirectional data broadcast. And area B, respectively.

  Similarly, when the selected service is a unidirectional baseball broadcast as shown in FIG. 3, the CPU 32 performs tuning focusing on this baseball relay on the digital tuner 16 in order to execute the tuning process by the first system. Set. The high frequency signal obtained from the antenna 14 is converted into a baseband signal according to this tuning, and the processing in the first system is executed in the same manner as described above. As a result, the unidirectional baseball game shown in FIG. This baseball broadcast is formed by a television broadcast distributed in one direction from a broadcasting station and a unidirectional data broadcast related to this baseball broadcast, and the television broadcast video and the data broadcast video are displayed in area A and area B, respectively. The

  Similarly, when the selected service is a unidirectional weather program as shown in FIG. 4, the CPU 32 performs tuning focusing on this weather program on the digital tuner 16 in order to execute the tuning process by the first system. Set. The high frequency signal obtained from the antenna 14 is converted into a baseband signal according to this tuning, and the processing in the first system is executed in the same manner as described above. As a result, the unidirectional weather program shown in FIG. The weather program is formed by a unidirectional broadcast from a broadcasting station and a unidirectional data broadcast related to the weather program. The television broadcast video and the data broadcast video are displayed in areas A and B, respectively. The

  When an event message is transmitted as an interrupt event from a broadcast station (not shown), the CPU 32 analyzes the event message obtained via the antenna 14 and activates an event handler based on the analysis result. The event handler means starting a predetermined event based on a user-defined function corresponding to a key input or a transmitted signal, and the user-defined function is stored in the flash memory 38.

  When the detected event message is an event message for updating the content of the data broadcast displayed in the area B, the CPU 32 analyzes the data carousel type BML document data stored in the DRAM 36 again, and based on the analysis result. Processing is executed, and the update processing result obtained in this way is given to the character generator 42. The character generator 42 gives character data corresponding to the update processing result given by the CPU 32 to the adder 46. The NTSC encoder 48 encodes character data into a composite signal, and outputs the encoded composite video signal from the monitor 46. As a result, the data broadcast video displayed in area B is updated as shown in FIG.

  When an operation for pressing a plurality of data broadcasting buttons (not shown) formed on the remote controller 12, that is, a bidirectional operation is performed during bidirectional data broadcasting, event processing corresponding to the data broadcasting button is performed. Specifically, the plurality of data broadcasting buttons have a “blue” button, and when the “blue” button is pressed during the broadcast of the quiz program shown in FIG. Is transmitted from the IR light emitting element 12a. This notification is given to the CPU 32 via the IR light receiving element 34. The CPU 32 analyzes the BML document stored in the DARM 36 and generates packet data including a broadcast station of the quiz program, the content of the quiz program, and a notification that the “blue” button has been selected. The generated packet data is given to the communication I / F 40, and the communication I / F 40 transmits the packet data to a broadcast station (not shown) via the Internet. In this way, event processing corresponding to bidirectional operation is realized.

  When an operation for pressing a data broadcast fixing key formed on the remote controller 12, that is, a data broadcast fixing operation is performed, a process for fixing the data broadcast video displayed in the area B, that is, a data broadcast fixing process is executed.

  Here, a state in which the data broadcast video displayed in the area B according to the data broadcast fixing operation is fixed is defined as a “data broadcast fixed state”. At this time, the parameter “FLG” registered in a register (not shown) formed in the CPU 32 indicates “1”. On the other hand, a state where the data broadcast video displayed in area B according to the data broadcast fixing operation is switched according to the service switching operation is defined as a “data broadcast non-fixed state”. At this time, “FLG” indicates “0”.

  When the data broadcast fixing operation is performed during the broadcast of the quiz program shown in FIG. 2, the remote controller 12 transmits a notification that the data broadcast fixed key is selected by the user from the IR light emitting element 12a. This is given to the CPU 32 via 34. Since the CPU 32 detects the currently set FLG and the detection result is “0”, the CPU 32 issues a command to display the “data broadcasting fixed” frame shown in FIG. Is set to “1”.

  The character generator 42 outputs the character data of the frame to the adder 46, and the NTSC encoder 48 encodes the character data into a composite video signal, and outputs the encoded composite video signal from the monitor 46. As a result, as shown in FIG. 6, a frame described as “data broadcasting being fixed” is displayed on the monitor 50. In this way, the user is informed that the data broadcast video output to area B is fixed.

  When baseball relay is selected by the service switching operation, the service according to the service switching operation is displayed in the area A as shown in FIG. Specifically, the CPU 32 connects the switch SW1 to the terminal T2 and connects the switch SW2 to the terminal T4 in order to perform the tuning process by the second system. The CPU 32 also makes a setting corresponding to the digital tuner 18 to tune a baseball broadcast television broadcast. According to this setting, the digital tuner 18 converts the high-frequency signal obtained from the antenna 14 into a baseband signal, and the processing in the second system is executed in the same manner as described above. Then, the video data output from the MPEG decoder 30 is input to the video processing circuit 44 via the terminal T2. The video processing circuit 44 adjusts the scale of the video data thus obtained to be displayed in the area A of FIG. 6, and the adjusted video data is output to the NTSC encoder 48. The NTSC encoder 48 encodes the video data and character data output from the adder 46 into a composite video signal, and outputs the encoded composite video signal from the monitor 50. Thus, the baseball broadcast television broadcast video is displayed in area A and the quiz program data broadcast video is continuously displayed in area B as shown in FIG.

  Further, when the weather forecast is selected by the service switching operation, the service according to the service switching operation is displayed in the area A as shown in FIG. Specifically, the CPU 32 performs a setting corresponding to the digital tuner 18 in order to tune the TV broadcast of the weather forecast in order to execute the tuning process by the second system, and the digital tuner 18 is obtained from the antenna 14 according to this setting. The high frequency signal is converted into a baseband signal, and the same processing as described above is executed. As a result, a weather broadcast television broadcast image is displayed in area A as shown in FIG. The data broadcast video of the quiz program is continuously displayed in area B.

  As described above, the bidirectional data broadcast fixed by the data broadcast fixing operation is continuously output even after the TV broadcast video output to the area A is replaced with another TV broadcast video. Thus, even after the service switching operation, the bidirectional operation for the fixed bidirectional data broadcasting can be performed.

  On the other hand, when a data broadcast fixing operation is performed in the data broadcast fixed state, the data broadcast video displayed in area B undergoes a process of transitioning from the data broadcast fixed state to the data broadcast non-fixed state. Specifically, when the data broadcast fixing operation is performed in the display state shown in FIG. 6, the remote controller 12 transmits a notification that the data broadcast fixed key has been selected by the user from the IR light emitting element 12a. The CPU 32 given this notification issues a command to erase the “data broadcasting fixed” frame to the character generator 42, connects the switch SW1 to the terminal T1, and connects the switch SW2 to the terminal T3. The character generator 42 stops outputting the frame character data. In this way, the quiz program as shown in FIG.

  Therefore, when the service switched by the service switching operation in the data broadcasting fixed state is different from the data broadcasting displayed in the area B, if the data broadcasting fixing operation is performed, a service according to the data broadcasting displayed in the area B is provided. Displayed in area A. Thereby, the operability of the remote controller 12 is improved.

  CPU32 performs the process according to the flowchart shown in FIG. 9 about the process relevant to data broadcasting. A control program corresponding to this flowchart is stored in the flash memory 38.

  Referring to FIG. 9, in step S1, a data broadcast activation process is executed. Specifically, the switch SW1 is connected to the terminal T1, the switch SW2 is connected to the terminal T3, and FLG is set to “0”. At this time, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  In step S3, it is determined whether or not an event message transmitted from the broadcasting station has been detected. If an event message is detected, event handler processing corresponding to this event message is executed in step S5. When the detected event message is an event message for updating the contents of the data broadcast displayed in the area B, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  In step S7, it is determined whether a bidirectional operation has been performed. When the data broadcasting button is pressed, event processing corresponding to the data broadcasting button is executed in step S9.

  In step S11, it is determined whether or not a data broadcast fixing operation has been performed. When the data broadcast fixing operation is performed, it is determined in step S13 whether FLG is “1”, that is, whether the data broadcast is in a fixed state. If the determination result is NO, the process proceeds to step S15, a command to display a frame is issued to the character generator 42, and FLG is set to "1" in step S17. At this time, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  On the other hand, if the determination result is YES, the process proceeds to step S19 to issue a command for erasing the frame to the character generator 42. In step S21, the switch SW1 is connected to the terminal T1, and the switch SW2 is connected to the terminal T3. In S23, FLG is set to “0”. Thus, the tuning process by the first system is set. At this time, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  In step S25, it is determined whether a service switching operation has been performed. When the service switching operation is performed, it is determined in step S27 whether FLG is “1”. If the determination result is NO, in step S29, tuning for paying attention to the service switching operation is set in the digital tuner 16 so as to perform tuning processing in the first system. At this time, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  On the other hand, if the determination result is YES, in step S31, the switch SW1 is connected to the terminal T2, and the switch SW2 is connected to the terminal T4. In step S33, tuning for paying attention to the service switching operation is set in the digital tuner 18 so as to perform the tuning process in the second system. Thus, the tuning process by the second system is set. At this time, the television broadcast video and the data broadcast video are displayed in the areas A and B as shown in FIG.

  According to this embodiment, the program content selected by the service switching operation is based on digital terrestrial broadcasting. However, the present invention is not limited to this, and the service content may be switched between different networks across BS / CS 110 degrees / terrestrial. .

  Further, according to this embodiment, it has been described that only the first system generates the BML document. However, the present invention is not limited to this, and the BML document can be generated and supplied to the CPU 32 also in the second system.

It is a block diagram which shows the structure of one Example of this invention. It is an illustration figure which shows a part of display operation | movement. It is an illustration figure which shows another part of display operation | movement. It is an illustration figure which shows the other part of display operation | movement. It is an illustration figure which shows the other part of display operation | movement. It is an illustration figure which shows a part of operation | movement which added character data to the display operation | movement shown in FIG. It is an illustration figure which shows the other part of display operation | movement. FIG. 10 is an illustrative view showing still another portion of the display operation. It is a flowchart which shows a part of operation | movement of CPU applied to the FIG. 1 Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 12 ... Remote control 14 ... Antenna 16, 18 ... Digital tuner 20, 22 ... OFDM demodulation circuit 24, 26 ... Demultiplexer 28, 30 ... MPEG decoder 32 ... CPU
36… DRAM
38 ... Flash memory 40 ... Communication I / F
42 ... Character generator 44 ... Video processing circuit 50 ... Monitor

Claims (4)

First and second receiving means for receiving first and second video contents, respectively;
First output means for outputting first video content received by the first receiving means;
A second part that outputs a part of the second video content received by the second receiving unit instead of a part of the first video content output by the first output unit when a service switching operation is received from the operator; Output means, and setting means for performing settings according to the service switching operation to the second receiving means in relation to the output processing of the second output means,
Each of the first and second video contents received by the first and second receiving means respectively has bidirectionality;
The receiver, wherein another part of the first video content output by the first output means after the output processing of the second output means includes a menu item selected by the operator. Each of the first and second video contents received by the first and second receiving means respectively includes a main video component and a sub-video component;
The receiver according to claim 1, wherein the second output means outputs a main video component forming the second video content instead of a main video component forming the first video component.   The receiver according to claim 2, wherein the main video component and the sub-video component correspond to a television broadcast and a data broadcast, respectively. Accepting means for accepting a bidirectional operation for selecting any one of the menu items;
4. The receiver according to claim 1, further comprising a transmission unit that transmits a reception result corresponding to the reception unit to a provider of the first video content.

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