JP3609663B2 - Digital broadcast receiving system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a digital broadcast receiving system.
[0002]
[Prior art]
A remote control device is attached to a digital broadcast receiver that receives a CS digital broadcast (for example, Sky Perfect TV) currently being broadcast. The digital broadcast receiver has a function that is not provided in a conventional receiver that receives an analog broadcast, for example, a function that displays a menu screen, a program guide, a program description, and the like. Most of the operations for realizing these functions are performed by a remote control device.
[0003]
FIG. 6 shows the configuration of a conventional CS digital broadcast receiving system.
[0004]
The digital broadcast receiving system includes a digital broadcast receiver 1, a television receiver 2 connected to the digital broadcast receiver 1, and a remote control device 3. In this example, a program guide is displayed on the television receiver 2.
[0005]
The remote control device 3 includes a power key 5, a numeric keypad 14, a channel switch key 6, a TV channel switch key 17, a TV provided in a remote control device attached to a conventional analog television broadcast receiver, VTR, etc. In addition to the volume adjustment key 18, the TV power key 12, and the TV input switching key 13, a determination button 9, a cursor key 10, a menu button 15, an explanation button 16, a page scroll key 7 and the like are provided. Unnecessary key operations and button operations are required, and the operation of the remote control device is greatly complicated.
[0006]
[Problems to be solved by the invention]
As described above, the remote control device attached to the CS digital broadcast receiver is highly important. Therefore, there are many functions that are complicated and are not sufficiently utilized by the user.
[0007]
Furthermore, in digital broadcasting that is developing into integrated digital broadcasting (ISDB), as shown in FIG. 1, the video of the currently selected program is displayed as the main screen 121 on the television receiver 102. At the same time, video of other selectable programs is displayed as a small sub-screen 122, and the selected program is selected by selecting the program to be selected from the sub-screen 122 by operating the cursor. It is assumed that This further increases the importance and complexity of the operation of the remote control device.
[0008]
In BS digital broadcasting and terrestrial digital broadcasting, which are scheduled to be broadcast in the future, it is certain that the user base will be widened and the number of users will continue to grow, but therefore users who cannot handle complex key operations. Is estimated to continue.
[0009]
An object of the present invention is to provide a digital broadcast receiving system in which a channel selection operation is simplified.
[0010]
[Means for Solving the Problems]
A digital broadcast receiving system according to the present invention includes a digital broadcast receiver that receives digital broadcast in which video data of one or more subprograms that can be selected is sent together with video data of a selected main program, In a digital broadcast receiving system equipped with a remote control device, the digital broadcast receiver extracts still image data from the video data of the selected main program and the video data of other subprograms that can be selected. And a data transmission means for transmitting control data for selecting each subprogram together with the extracted still image data to the remote control device. The remote control device includes a touch panel display, digital broadcasting Still image data and control data of the main program and each subprogram sent from the receiver Display processing means for displaying a still image of the main program and each subprogram on the touch panel display, and a still image of one subprogram among the still images of each subprogram displayed on the touchscreen display. When an image display area is selected by a touch operation, a channel selection command transmitting means for transmitting a channel selection command for selecting the selected subprogram to the digital broadcast receiver is provided.
[0011]
As the extracting means, for example, one that extracts I picture data as still image data from MPEG video data of the selected main program and MPEG video data of each subprogram that can be selected is used. . In this case, the display processing means includes means for decoding the I picture data of the main program and each subprogram sent from the digital broadcast receiver.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0013]
FIG. 1 shows the configuration of a digital broadcast receiving system.
[0014]
The digital broadcast receiving system includes a digital broadcast receiver 101, a television receiver 102 connected to the digital broadcast receiver 101, and a remote control device 103.
[0015]
The remote control device 103 includes a remote control power key 111, a television power key 112, a lamp 113 that is lit when the remote control power is on, a lamp 114 that indicates a data reception state, a menu button 115, a switch button 116, A volume adjustment key 117, a channel switching key 118, a cursor key 119, an enter key 120, and a liquid crystal touch panel 35 are provided.
[0016]
In addition to the video data of the program (video data of the main program), the broadcast data of each program also includes video data of programs that can be selected (video data of subprograms). On the device 102, the video of the currently selected main program is displayed as a main screen 121, and other sub-program videos that can be selected are displayed as small sub screens 122, 123, and 124. Then, by selecting a program to be selected from the sub screens 122, 123, and 124 by operating the cursor, the selected sub program is selected.
[0017]
Even when a subprogram is selected, the selected subprogram is displayed as a video of the main program, as well as a video of a subprogram that can be selected.
[0018]
In this embodiment, the still image in the currently selected main program is also displayed as the main screen 121 ′ in the liquid crystal touch panel 35 of the remote control device 103, and in the other subprograms that can be selected. Still images are displayed on the small sub-screens 122 ′, 123 ′, and 124 ′. Then, the selected program is selected by selecting a program to be selected from the sub-screens 122 ′, 123 ′, and 124 ′ by a touch operation. The main screen and the sub screen are composed of a frame image and a still image displayed in the frame image.
[0019]
FIG. 2 shows the configuration of the digital broadcast receiver 101.
[0020]
The tuning / decoding circuit 20 receives data in a specific frequency band from the broadcast wave input from the antenna terminal 19 according to an instruction from the system control unit 26, and decodes it into a transport stream of MPEG Systems.
[0021]
The MPEG DEMUX circuit 21 classifies the signals obtained by the tuning / decoding circuit 20 into video data, audio data, and attached data, and in accordance with an instruction from the system control unit 26, specific video data (main program video data and Video data including video data of each subprogram) is sent to the video data processing unit 24, specific audio data is sent to the audio data processing unit 22, and attached data is transferred to the system control unit 26.
[0022]
In this embodiment, the attached data includes control data. The control data includes the data representing the position and size of the frame image on the main screen 121 and the position and size of the frame image on each sub-screen 122 described in FIG. 1, and the program displayed in each sub-screen 122. Data for channel selection.
[0023]
The data sent to the audio data processing unit 22 is output as an audio signal which is sent to the audio output terminal 23 after being MPEG decoded. The video data (video data including the video data of the main program and the video data of each subprogram) sent to the video data processing unit 24 is sent to the video output terminal 25 after being MPEG decoded and output as a video signal. .
[0024]
Further, the video data processing unit 24 extracts a part composed of I pictures from the video data of the main program and the video data of each subprogram based on an instruction from the system control unit 26, and an FM transmission signal processing unit. Send to 27.
[0025]
The system control unit 26 analyzes the transmitted control data, converts it into control data that can be processed by the remote control device 30, and then sends it to the FM transmission signal processing unit 27. The FM transmission signal processing unit 27 performs a mixing process so that the image data (I picture) sent from the video data processing unit 24 and the control data sent from the system control unit 26 can be sent out by FM waves. And sent to the FM modulation circuit 28. The FM modulation circuit 28 performs FM modulation on the transmitted data and transmits the data.
[0026]
FIG. 3 shows the configuration of the remote control device 103.
[0027]
When the system control unit 36 receives an operation signal from the key input unit 37, the system control unit 36 outputs a corresponding remote control signal to the infrared output circuit 38. The infrared output circuit 38 converts the input remote control signal into an infrared signal and transmits it.
[0028]
The FM tuner / decoding circuit 32 receives and decodes the FM wave from the FM modulation circuit 28 based on an instruction from the system control unit 36. Then, the obtained image data (I picture) is sent to the MPEG decoder unit 33, and the obtained control data is sent to the system control unit 36.
[0029]
The MPEG decoder unit 33 decodes the sent image data and sends it to the video processing unit 34. The system control unit 36 generates OSD image data corresponding to the frame images of the main screen and the sub screen based on the transmitted control data, and sends the OSD image data to the video processing unit 34. The video processing unit 34 combines the image data sent from the MPEG decoder unit 33 with the OSD image data sent from the system control unit 36, and sends the obtained video signal to the liquid crystal touch panel 35. The liquid crystal touch panel 35 displays the transmitted video signal. Thereby, an image as shown in FIG. 1 is displayed on the liquid crystal touch panel 35.
[0030]
Further, when the user touches the liquid crystal touch panel 35, the liquid crystal touch panel 35 sends position data indicating the area touched by the user to the system control unit 36. When data representing the area touched by the user is sent from the liquid crystal touch panel 35, the system control unit 36 analyzes the control data and the position data from the touch panel, and selects a program corresponding to the sub-screen touched by the user. A command signal for sending the signal is sent to the infrared output circuit 38. The infrared output circuit 38 converts the sent command signal into an infrared signal and sends it out.
[0031]
FIG. 4 shows a data transmission / reception processing procedure between the digital broadcast receiver and the remote control device.
[0032]
After the user operates the power key 111 on the remote control device 103 to turn on the power of the remote control device 103 (step 1), the power key 112 of the digital broadcast receiver on the remote control device 103 is turned on. Then (step 2), the remote control device 103 sends a power-on request signal (step 3).
[0033]
Thereafter, the remote control device 103 sends an image data request signal to the digital broadcast receiver 101 (step 4), and enters a reception waiting state for image data and control data (step 5).
[0034]
Upon receiving the power-on request signal, the digital broadcast receiver 101 turns on the power and performs a digital broadcast wave receiving operation (step 21). Then, the image data request signal reception waiting state is entered (step 22). Thereafter, when an image data request signal is sent from the remote control device 103, an image data request signal reception process is performed (step 23), and then an image data (I picture) acquisition process is performed (step 24). ) Control data acquisition processing is performed (step 25).
[0035]
Then, after the acquired image data and control data are transmitted to the remote control device 103 (step 26), the processing request signal wait state is entered (step 27).
[0036]
In step 5, the remote control device 103 that is waiting to receive image data and control data performs data reception processing when image data and control data are sent from the digital broadcast receiver 101 (step 6). The received image data is decoded and control data is expanded (frame image data generation processing) (step 7), and the image is displayed on the liquid crystal touch panel 35 (step 8). Then, the process waits for a user operation (step 9).
[0037]
When a user operation is performed, the remote control device 103 analyzes the user operation based on the control data (step 10). A processing request signal for requesting channel selection or the like is transmitted to the digital broadcast receiver 101 (step 11). When image data processing is required as in the case of requesting channel selection (YES in step 12), the process returns to step 4 to send an image data request signal. If image data processing is not necessary (NO in step 12), the process returns to step 9 and waits for a user operation.
[0038]
In step 27, when the digital broadcast receiver 101 in the process request signal waiting state receives the process request signal from the remote control device 103, the digital broadcast receiver 101 performs the process request signal reception process (step 28). Processing requested by the request signal (for example, channel selection processing) is performed (step 29). When image data processing is necessary as in the case of channel selection processing (YES in step 30), the process returns to step 22 and waits for an image data request signal. If image data processing is not necessary (NO in step 30), the process returns to step 27 and waits for a processing request signal.
[0039]
For example, in the state of FIG. 1, when a region of the sub screen 123 ′ on the touch panel 35 of the remote control device 103 is selected by the touch operation by the user, the sub program corresponding to the region 123 ′ is selected. Is transmitted from the remote control device 103 to the digital broadcast receiver 101, and the digital broadcast receiver 101 receives the signal to perform a channel selection operation and display it on the television receiver 102. Thereby, as shown in FIG. 5, the selected subprogram is displayed as a main program.
[0040]
In the above embodiment, the case where data is transmitted from the digital broadcast receiver to the remote control device by FM waves and signal transmission from the remote control device to the digital broadcast receiver is performed by infrared communication has been described. Data transmission from the receiver to the remote control device may be performed by infrared communication.
[0041]
【The invention's effect】
According to the present invention, since the user can perform channel selection by simply touching the sub-screen displayed on the liquid crystal screen of the remote control device, the channel selection operation is simplified.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a configuration of a digital broadcast receiving system.
FIG. 2 is a block diagram showing a configuration of a digital broadcast receiver.
FIG. 3 is a block diagram showing a configuration of a remote control device.
FIG. 4 is a flowchart showing a data transmission / reception processing procedure between the digital broadcast receiver and the remote control device.
FIG. 5 is an explanatory diagram for explaining that a channel selection operation is performed when a user touches an area in a predetermined sub-screen on the touch panel of the remote control device.
FIG. 6 is a schematic diagram showing a configuration of a conventional digital broadcast receiving system.
[Explanation of symbols]
101 Digital Broadcasting Receiver 102 Television Receiver 103 Remote Control Device 26 System Control Unit 27 FM Transmission Signal Processing Unit 28 FM Modulation Circuit 32 FM Tuner / Decoding Circuit 33 MPEG Decoder Unit 34 Video Processing Unit 35 Liquid Crystal Touch Panel 36 System Control Part 38 Infrared output circuit

Claims (2)

Digital broadcast comprising a digital broadcast receiver for receiving a digital broadcast in which the video data of one or more subprograms that can be selected is sent together with the video data of the selected main program, and a remote control device In the receiving system,
Digital broadcast receiver
Extraction means for extracting still image data from each selected video data of the main program and other subprograms that can be selected, and for selecting each subprogram together with the extracted still image data Data transmission means for transmitting the control data to the remote control device,
Remote control device
Touch panel display,
Display processing means for displaying a still image of a main program and each subprogram on a touch panel display based on still image data and control data of the main program and each subprogram sent from a digital broadcast receiver, and a touch panel When the display area of one subprogram still image is selected by touch operation among the still images of each subprogram displayed on the type display, a channel selection command for selecting the selected subprogram A digital broadcast receiving system comprising a channel selection command transmitting means for transmitting the signal to the digital broadcast receiver. The extracting means extracts I picture data as still image data from the MPEG video data of the selected main program and the MPEG video data of each subprogram that can be selected.
2. The digital broadcast receiving system according to claim 1, wherein the display processing means includes means for decoding the I picture data of the main program and each subprogram sent from the digital broadcast receiver. .

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