JP2004064463A - Digital broadcast receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To execute processing desired by a user by detecting that a currently received program is also broadcasted on other broadcast waves, in a structure for receiving more than two digital broadcast waves. <P>SOLUTION: A CPU 13 determines whether the same program as the currently received program is broadcasted on other broadcast waves. If the same program is broadcasted, the CPU 13 obtains receiving conditions of broadcasting waves from tuners 2A/2B, furthermore, obtains image quality information of the program, and determines whether the currently received program is poor in terms of receiving conditions and image quality in comparison with the same program on the other broadcast wave. If the currently received program is poor, the CPU 13 automatically executes processing for receiving the same program on the other broadcast wave. <P>COPYRIGHT: (C)2004,JPO

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. Then, a configuration capable of receiving both BS and CS as satellite digital broadcasting, and a configuration capable of receiving both satellite digital broadcasting and terrestrial digital broadcasting are possible.
[0003]
[Problems to be solved by the invention]
By the way, it is expected that broadcasters often broadcast the same program in satellite digital broadcasting and terrestrial digital broadcasting. In this case, terrestrial digital broadcasting broadcasts in SD (Standard Definition Television), and satellite digital broadcasts in HD. (High Definition Television) may be used for broadcasting. Also, in bad weather, it may be considered that only low-level images can be seen with satellite digital and high-quality images can be seen with terrestrial digital. In the case where two or more types of digital broadcast waves can be received in this manner, the program currently being received may be broadcast on other broadcast waves, and may have a high image quality. There is a possibility that the user may continue watching the program of the lower image quality without knowing it.
[0004]
In view of the above circumstances, the present invention is preferable for a user in a case where two or more types of digital broadcast waves can be received, by detecting that a currently received program is also broadcasted by another broadcast wave. It is an object of the present invention to provide a digital broadcast receiving device capable of executing processing.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a digital broadcast receiving apparatus according to the present invention is configured to receive two or more types of digital broadcast waves and obtain and process various data included in each of the broadcast waves. In the broadcast receiving apparatus, means for detecting whether or not the same program as the program of the currently received broadcast wave is currently being broadcast in another broadcast wave, and means for detecting whether or not the same program is currently being broadcast in another broadcast wave And if it is determined that it is preferable to receive the same program, after the message is displayed, the same program is received by user operation or the same program is automatically received. And means for performing the operation.
[0006]
With the above configuration, if the currently received program is being broadcast on another broadcast wave, and it is more preferable to receive the same program, such as a good reception condition or high image quality, It is possible to avoid that the user keeps watching the received program without knowing it.
[0007]
Further, the digital broadcast receiving apparatus of the present invention receives two or more types of digital broadcast waves, and reserves the digital broadcast waves in the digital broadcast receiving apparatus configured to acquire and process various data included in each of the broadcast waves. Means for detecting whether a program identical or similar to the program is scheduled to be broadcast on another broadcast wave, and means for displaying a message when the same or similar program is scheduled to be broadcast on another broadcast wave. , Is provided.
[0008]
With the above configuration, for the reserved program, in addition to the reservation at the broadcast date and time in the broadcast wave, the user is given an option to reserve the same or similar program at the same or different date and time in another broadcast wave. Will be.
[0009]
A message may be displayed when the reserved program is a duplicate reservation with another reserved program and the same or similar program is scheduled to be broadcast by another broadcast wave. Also, a message may be displayed when the same or similar program scheduled to be broadcast has higher image quality than the reserved program.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. Here, an example of a configuration in which both satellite digital broadcasting and terrestrial digital broadcasting can be viewed is shown. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment, FIG. 2 is a flowchart showing control contents, and FIG. 3 is an explanatory view showing a message screen during program video display. FIGS. 4A and 4B are explanatory diagrams showing a message screen when program reservation is set.
[0011]
The antenna 1A is arranged outdoors in a predetermined direction, and receives a digital broadcast signal transmitted from a CS or a BS. The antenna 1A generally includes a frequency converter, and supplies a signal subjected to reception / frequency conversion to the satellite digital tuner 2A. The antenna 1B receives the terrestrial digital broadcast signal and supplies it to the terrestrial digital tuner 2B.
[0012]
The tuners 2A and 2B extract a signal of a specific frequency from the high-frequency digital modulation signal including the video and audio data. In addition, the tuners 2A and 2B include a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, thereby demodulating the selected digital modulation signal and outputting a transport stream.
[0013]
A demultiplexer (DEMUX) 3 receives a transport stream from the tuners 2A and 2B based on an instruction from the CPU 13, and outputs a video stream, an audio stream, and a PSI / SI (Program Specific Information) of MPEG2 (Moving Picture Experts Group2). / Service Information). The demultiplexer 3 selects a video / audio stream of a satellite digital broadcast or a terrestrial digital broadcast according to an instruction of the CPU 13 and supplies the selected video / audio stream to the AV decoder 4, and the program information (program name, program start time, program Content information, program genre information, etc.) are supplied to the CPU 13.
[0014]
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.
[0015]
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 signal processing circuit 6 receives the audio data output from the AV decoder 4, performs D / A conversion, and generates, for example, a right (R) sound analog signal and a left (L) sound analog signal, For example, an analog signal of audio and sub audio is generated.
[0016]
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 section (a set of left and right audio output terminals and the like and a video output terminal and the like). The output section has a monitor 16 including a picture tube 16a and a speaker 16b by a video / audio code 17. Is connected.
[0017]
The OSD (on-screen display) circuit 12 generates video data based on character information and color information instructed to be output from the CPU 13 and outputs the video data to the adder 20. 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 displays a menu screen, a message screen, and the like.
[0018]
The remote control transmitter 10 is a transmitter for sending a command to the broadcast receiving device 30. When each key of the remote control transmitter 10 is operated, a signal light (remote control signal) indicating a command corresponding to the key is transmitted from a light emitting unit (not shown). 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.
[0019]
The memory (for example, EEPROM) stores program information (program name, program details, program start time, program end time, broadcast station information, etc.) in satellite digital broadcasting, program information in terrestrial digital broadcasting, and the like. .
[0020]
The CPU 13 performs overall control of the digital broadcast receiving apparatus 30, and particularly performs the following processing as control according to the present invention.
[0021]
(1) It is determined whether or not the same program as the currently received program is being broadcast by another broadcast wave. In this determination, first, it is necessary to determine whether the same broadcaster exists in the digital satellite broadcasting and the terrestrial digital broadcasting. This determination is made by using the information in the BIT (Broadcaster Information Table) section. It becomes possible. Then, it is possible to determine whether or not the same program is being broadcast in both broadcast waves by determining whether the program name, program details, broadcast time, and the like in the EIT (Event Information Table) match. It is preferable to create a broadcaster management table in the memory 14 based on the received BIT. In terrestrial digital broadcasting, channel information of satellite broadcasting operated by the same broadcasting company (broadcasting station) will be transmitted. If this information is used, a broadcasting company management table may not be created. It can be easily determined whether or not the same broadcaster is broadcasting with another broadcast wave.
[0022]
{Circle around (2)} Information indicating the reception condition in the tuner 2A and the tuner 2B is obtained and compared. Information indicating the reception condition includes an antenna level and an error rate.
[0023]
{Circle around (3)} Perform processing for determining the image quality of the program. The image quality can be determined by the bit rate of the video stream or the image format information of the PMT section. If image quality information is incorporated into the program information, the image quality of the program can be determined at the time of program reservation.
[0024]
{Circle around (4)} Automatic channel selection and message display to the user are executed based on these processing results. This series of processing will be described based on the flowchart of FIG. In FIG. 2, first, it is determined whether or not the same broadcaster that broadcasts the program currently being viewed exists in another broadcast wave (step S1). If the same broadcaster exists in another broadcast wave, the current broadcast program of this broadcaster is compared with the current received program of the receiving apparatus, and it is determined whether the same program is broadcast in another broadcast wave. A determination is made (step S2, step S3). If the same program is being broadcast by another broadcast wave, the reception condition of the broadcast wave is obtained (step S4), and the image quality information of the program is further obtained (step S5). Next, it is determined whether the currently received program is inferior to the same program of another broadcast wave in terms of reception conditions and image quality (step S6). If it is inferior, a process of automatically receiving the same program of another broadcast wave is executed, or a message indicating that the same program of another broadcast wave is better is displayed on the screen (step S7). For example, it is conceivable to select which one to take on the menu screen in advance. If it is not inferior to the same program of another broadcast wave, the process proceeds to step S8, and it is determined whether or not all channels have been confirmed. If YES, the process ends, and if NO, the process proceeds to step S2.
[0025]
FIG. 3 shows a display example of the message screen in step S7. As shown in FIG. 3, when watching “Enjoyable English Conversation” on the terrestrial TV program and detecting that “Enjoyable English Conversation” of the same program is being broadcast in high quality in BS digital broadcasting , A message such as "Switch to high-definition program of BS digital broadcast or" YES "or" NO "?" When the user operates remote controller 10 to select "YES," It switches to "fun English conversation" reception.
[0026]
{Circle around (5)} Apart from the above processing, the CPU 13 searches for the same or similar program as the reserved program to be broadcast on another broadcast wave when making a reservation for viewing or recording a program. . The determination of a similar program can be made based on a program name, a genre, and the like. In addition to searching for the same program or a similar program in the same time zone as the broadcast time of the reserved program, the search is performed within a range of, for example, 48 hours before and after the broadcast time of the reserved program. The same or similar program is simply searched for program viewing reservation or recording reservation, and when it is found, it is presented to the user. In addition, when the reserved program overlaps another reserved program, the same program or similar program is displayed. A process of presenting the searched program to the user may be performed. FIG. 4 shows a screen display example of such processing. FIG. 7A shows a reservation content display screen at the time of program reservation. When the “Enter” button of the remote control transmitter 10 is pressed on this screen, the screen transits to the screen of FIG. In this transition screen, a message indicating that the same program has been found in another time zone is displayed together with a message indicating that the reserved program has overlapped with another reserved program. The user sees this screen and can select not only to cancel the reservation of the news that is a duplicate program but also to switch to the reservation of the same program by digital terrestrial broadcasting. In addition, not only that the same program or a similar program has been found, but also the condition that the quality of the program is higher than that of the reserved program may be presented to the user.
[0027]
【The invention's effect】
As described above, according to the present invention, in a case where two or more types of digital broadcast waves can be received, the user can detect that the currently received program is being broadcast by other broadcast waves, and This makes it possible to execute a process that is desirable to the user and to present to the user a message indicating that the same or similar program as the reserved program can be received by another broadcast wave.
[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. 2 is a flowchart showing processing contents.
FIG. 3 is an explanatory diagram showing a message screen during program video display.
FIGS. 4A and 4B are explanatory diagrams showing a message screen when a program is reserved.
[Explanation of symbols]
1A ・ 1B Antenna 2A ・ 2B Tuner 3 Demultiplexer (DEMUX)
4 AV decoder 12 OSD circuit 13 CPU
14 Non-volatile memory

Claims (6)

In a digital broadcast receiving apparatus configured to receive two or more types of digital broadcast waves and acquire and process various data included in each broadcast wave, the same program as the program of the broadcast wave currently being received. It is more preferable to detect whether or not the same program is currently being broadcast on another broadcast wave, and to receive the same program when the same program is currently being broadcast on another broadcast wave. Means for executing the reception of the same program by a user operation after the message is displayed or for automatically receiving the same program after the message is displayed. 2. The digital broadcast receiving apparatus according to claim 1, wherein the digital broadcast receiving apparatus is configured to determine whether it is preferable to receive the same program based on a reception condition of a broadcast wave. apparatus. In the digital broadcast receiving apparatus according to claim 1 or 2, it is more preferable to receive the same program by comparing image quality information of a program of a currently received broadcast wave with image quality information of the same program. A digital broadcast receiving apparatus configured to determine whether the digital broadcast is suitable. In a digital broadcast receiving apparatus configured to receive two or more types of digital broadcast waves and acquire and process various data included in each broadcast wave, a program that is the same as or similar to the reserved program is transmitted to another broadcast wave. Digital broadcasting, comprising: means for detecting whether or not the program is scheduled to be broadcast on a wave, and means for displaying a message when the same or similar program is scheduled to be broadcast on another broadcast wave. Receiver. 5. The digital broadcast receiving apparatus according to claim 4, wherein a message is displayed when the reserved program is a duplicate reservation of another reserved program and the same or similar program is scheduled to be broadcast by another broadcast wave. A digital broadcast receiving apparatus characterized by being configured as described above. The digital broadcast receiving apparatus according to claim 4 or 5, wherein a message is displayed when the same or similar program scheduled to be broadcast has higher image quality than the reserved program. Digital broadcast receiving device.

Images