JP2003163854A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver provided with a display function of a program guide having excellent convenience. <P>SOLUTION: When a user uses a remote control transmitter 10 or the like to give a power OFF instruction to the receiver 30, a CPU 13 gives a command to a tuner 2 to start channel searching and to acquire program information of a channel having been selected by the user in advance as the channel whose program information is to be displayed and executes power OFF processing after that. When the user gives a power ON instruction to the receiver 30, the CPU 13 creates a program guide on the basis of the program information having been acquired as to the channel selected by the user in advance as the channel whose program information is to be displayed and displays the program guide on the screen. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving apparatus for receiving digital broadcast.

[0002]

2. Description of the Related Art A digital broadcasting receiving apparatus for receiving digital broadcasting using satellites or terrestrial waves selects an arbitrary broadcasting wave from a plurality of broadcasting waves received through a dedicated antenna or a terrestrial antenna by a tuner. , Select any channel from the multiple channels included in the selected broadcast wave by demultiplexing, extract the digital signal of this selected channel, and decode it to output video / audio signals. .

In such digital broadcasting, in addition to transmitting video and audio as in conventional analog broadcasting,
Program information is also transmitted. This program information includes various information such as a program name, program start time, program content information, and program genre information. On the receiving device side, an EPG (Select) using an OSD (On Screen Display) function is used.
A program desired by the user can be selected from the multi-channel broadcasting by the display function (program guide display function) of the "ronic Program Guide".

[0004]

However, in the above-mentioned conventional EPG display function, it is desired to further improve the convenience.

In view of the above circumstances, it is an object of the present invention to provide a digital broadcast receiving apparatus having a convenient program guide display function.

[0006]

In order to solve the above problems, the digital broadcast receiving apparatus of the present invention includes means for acquiring and storing program information included in a digital broadcast wave, and current date and time information. Means for outputting, and means for creating a program table based on the program information corresponding to the power-on date and time among the program information stored in advance when the power is turned on, and outputting the video. It is characterized by being provided (hereinafter referred to as the first configuration in this section).

With the above arrangement, when the power is turned on, the program guide corresponding to the time point is automatically presented to the user.

In the digital broadcast receiving apparatus having the above-mentioned first structure, means for holding list information relating to a channel for which program information has been acquired and outputting a video of the list, and a channel desired to display a program guide from the list. It is preferable to provide a means for allowing the user to select, and to output the video of the program guide for the channel selected by the user in advance when the power is turned on. According to this, for example, when the power is turned on for a channel that the user likes, the program guide corresponding to that time is automatically presented.

Further, the digital broadcast receiving apparatus of the present invention relates to a means for acquiring and storing program information included in a digital broadcast wave, a means for outputting current date and time information, and a channel for which the program information can be acquired. Means for holding list information and outputting the video of the list, means for allowing the user to select a channel from the list for which the program guide is desired to be displayed, and previously stored when the user issues a program guide display command. Means for creating a program guide based on the program information for the channel selected in advance by the user corresponding to the date and time among the stored program information, and outputting the video. To do.

With the above configuration, when the user gives a command to display the program guide, the program guide corresponding to the time when the command is issued is presented to the user for a channel that the user likes, for example.

In the digital broadcast receiving apparatus having the first configuration, a channel search is performed when a program is not viewed, and if the searched channel is a new channel, the program information of the channel is acquired and stored. You may comprise.

Further, in the digital broadcast receiving apparatus configured to display the list, a channel search is performed when the program is not viewed, and when the searched channel is a channel included in the list, the program information of the channel is displayed. Should be obtained and stored. Further, in such a configuration, when the searched channel is a new channel and the channel provides program information, it is preferable to add it to the list. Further, the program information of the new channel may be stored.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
4 to FIG. 4, a case where the user views the terrestrial digital broadcast is illustrated here. Figure 1
2 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment, FIG. 2 (a) is an explanatory view showing a program information providing channel list screen, and FIG. 2 (b) is a program guide (EPG screen). 3 is a flowchart showing a channel search process, and FIG. 4 is a flowchart showing a program guide display process.

The antenna 1 is arranged outdoors in a predetermined direction and receives a digital broadcast signal sent from a terrestrial broadcast station.

The tuner 2 extracts a signal of a specific frequency from the high frequency digital modulated signal containing video / audio data. Further, the tuner 2 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, etc., and demodulates the selected digital modulation signal to output a transport stream.

A demultiplexer (DEMUX) 3 converts the transport stream into MPEG2 (Mov).
ing Picture Experts Group
2) video stream, audio stream, and PSI / SI / EIT (Program Speci
fic Information / ServiceIn
formation / Event Information
on Table). Demultiplexer 3
Supplies the video stream and the audio stream to the AV decoder 4, and supplies the program information (program name, program start time, program duration, program content information, program genre information, etc.) included in the PSI / SI to the CPU 13. .
It should be noted that, as described above, a plurality of channels are multiplexed in the transport stream, and the process for selecting an arbitrary channel from these is performed by the PSI /
This is possible by extracting data such as which packet ID is used to multiplex an arbitrary channel in the transport stream from the SI.

The AV decoder 4 includes a video decoder for decoding a video stream and an audio decoder for decoding an audio stream. The video decoder decodes the input variable length code to obtain a quantized coefficient and a motion vector, and performs inverse DCT conversion and motion compensation control based on the motion vector. The audio decoder decodes the input coded signal to generate audio data. The video data generated by decoding is output to the video processing circuit 5, and the audio data is output to the audio processing circuit 6.

The video processing circuit 5 receives the video data from the AV decoder 4 and performs D / A conversion to convert it into, for example, a composite video signal. The audio processing circuit 6 receives the audio data output from the AV decoder 4 and receives the D / A
The conversion is performed to generate, for example, a right (R) sound analog signal and a left (L) sound analog signal.

The video output circuit 7 and the audio output circuit 8 are provided with output resistors and amplifiers. The AV output terminal 9 has an output section (a set of left and right audio output terminals, a video output terminal, etc.)
Is provided, and a monitor 16 including a picture tube 16a and a speaker 16b is connected to the output section by a video / audio code 17.

The OSD circuit 12 outputs to the adder 20 video data based on the character information and color information instructed by the CPU 13. 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 causes the CPU 13 to receive an EPG (Electro) based on the program information described above.
nic Program Guide) display, program information provision channel list screen display, and the like.

The remote control transmitter 10 is a transmitter for sending a command to the broadcast receiving apparatus 30. When a key (not shown) provided on the remote control transmitter 10 is operated, a signal light (remote control signal) indicating a command corresponding to the key is sent from a light emitting unit (not shown). The remote control light receiver 11 receives the signal light, converts it into an electric signal, and gives it to the CPU 13.

Non-volatile memory (eg EEPROM etc.)
14, EPG data (program information) for displaying an EPG screen, program information providing channel list information,
Information on a channel (hereinafter, this channel is referred to as a program information display channel) desired by the user to display the program guide is stored.

The CPU 13 performs overall control of the digital broadcast receiving apparatus 30. Particularly, as control according to the present invention, the user makes a display request as a favorite among channels providing program information. The existing channel is stored as a program information display channel, and a program guide for this program information display channel is created and displayed. Figure 2 (a) shows
The display screen of the channel list providing the program information is shown, and the channel indicated by the box in this screen is the program information display channel. In this example, the first channel, the fourth channel, and the fourteenth channel are selected, and the user selects the remote control transmitter 1
When the power is turned on by using 0, etc., the power is turned on for the program information display channel as shown in FIG. 2 (b).
A program guide corresponding to the time is created and displayed.

FIG. 3 is a flow chart showing the channel search processing. When the user uses the remote control transmitter 10 or the like to issue a power-off instruction to the receiving device 30 (YES in step S1), the receiving device 30 delays the power-off process and starts channel search (step S2).
It should be noted that, for example, in order to prevent the user from deciding that the power-off processing is delayed, it is possible that
Perform processing such as muting video and audio, and display a message on the received video display screen, such as "Currently performing channel search, power off processing will be automatically executed when finished". Good to do.

The CPU 13 sets, for example, the lowest frequency to the tuner 2 and executes a tuning operation to determine the presence / absence of broadcasting (step S3). If broadcasting is present, the nonvolatile memory 14 stores it. Based on the program information provision channel list, it is judged whether the broadcast is a new channel (step S4). If it is not a new channel, it is determined whether it is the channel selected as the program information display channel (step S
5). If it is the channel selected as the program information display channel, the program information is acquired and stored in the memory (step S6), and the process proceeds to step S9.

When it is determined in step S4 that the channel is a new channel, it is determined whether program information is provided in this channel (step S7).
If there is no program information, the process proceeds to step S9, but if there is program information, this channel is added to the program information provision channel list (step S8), and step S8.
Proceed to 9. When the new channel is 16ch, as shown in FIG. 2A, it is displayed so that it can be seen that it is a new channel, such as "NEW 16ch x station" in the program information provision channel list.

In step S9, it is determined whether or not the channel search is completed. If not completed, the process returns to step S2, the next frequency is set in the tuner 2, and the channel search process is continued. When the channel search is completed, the power-off process of the receiving device is performed (step S10), and the process is completed (entering the standby mode).

FIG. 4 is a flow chart showing the display processing of the program guide. When the user gives an instruction to turn on the power to the receiving device 30 by using the remote control transmitter 10 or the like (step S1
If YES in step 1), the CPU 13 determines whether or not the program guide display is selected (whether or not there is a program information display channel) based on the information stored in the nonvolatile memory 14 (step S12). If the program guide is not selected to be displayed, the channel being viewed at the time when the power is turned off last time is received and the program display process is performed (step S15). When the display of the program guide is selected, the CPU 13 acquires the current date and time information from the calendar function unit (not shown) (step S13), reads the program information of the program information display channel from the non-volatile memory 14, and reads the current time at the current time. A program guide is created correspondingly and displayed (see FIG. 2B).

In the above processing example, when the new channel is a channel providing program information, only the list is added and the program information of the channel is not stored. May be stored. Further, in addition to the display of the program guide when the power is turned on as described above, it is preferable to display the normal program guide based on the display instruction of the normal program guide. Further, although the channel search processing is performed when the user performs the power-off operation, if the period from the power-off to the next power-on is long, the program information may become old. In consideration of this, the automatic power-on process is executed at a predetermined cycle (for example, every 1 hour, every 12 hours, every 24 hours, etc.) starting from the time when the power is turned off (when the received video output is It is preferable to perform the above-mentioned channel search processing (not required) (see steps S2 to S10 in FIG. 3). In this case, it is preferable that power is supplied only to the circuits required for channel search and program information storage. Further, in the above embodiment,
The program information was acquired and the program guide was displayed for the program information display channel selected in the program information supply channel list, but the program information is acquired and the program guide is displayed for all the channels in the program information supply channel list. You may

[0030]

As described above, according to the present invention, when the power is turned on, the program guide corresponding to the time point is automatically presented to the user, and the user likes the channel. Since the program guide is created and presented to the user, convenience is improved. Further, the configuration in which the program information is acquired by performing the channel search in the non-viewing state of the program brings about an effect that the new information can be presented to the user as much as possible in the presentation of the program guide.

[Brief description of drawings]

FIG. 1 is a block diagram showing a digital broadcast receiving apparatus according to an embodiment of the present invention.

FIG. 2A is an explanatory diagram showing a program information providing channel list screen, and FIG. 2B is a program guide (EPG).
It is an explanatory view showing a screen.

FIG. 3 is a flowchart showing a channel search process.

FIG. 4 is a flowchart showing a program guide display process.

[Explanation of symbols]

1 antenna 2 BS digital tuner 3 Demultiplexer (DEMUX) 4 AV decoder 12 OSD circuit 13 CPU 14 Non-volatile memory

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Claims (7)

[Claims] 1. A means for acquiring and storing program information included in a digital broadcast wave, a means for outputting current date and time information, and the program information previously stored when power is turned on. Among these, means for creating a program guide based on the program information corresponding to the power-on date and time and outputting the video,
A digital broadcast receiving apparatus comprising: 2. The digital broadcast receiving apparatus according to claim 1, wherein a means for holding list information relating to a channel for which program information has been acquired and outputting a video of the list, and displaying a program guide from the list are desired. A digital broadcast receiving apparatus comprising: a unit for allowing a user to select a channel to be played, and configured to output a video of a program guide for a channel selected by the user in advance when the power is turned on. 3. A means for acquiring and storing program information included in a digital broadcast wave, a means for outputting current date and time information, and a list information concerning a channel for which the program information can be acquired is held and stored in the list. Means for outputting video,
A means for allowing the user to select a channel for which a program guide is desired to be displayed from the list, and, when the user gives a command to display the program guide, corresponds to the date and time in the program information stored in advance. Means for creating a program guide based on program information for a channel selected in advance by a user and outputting a video image. 4. The digital broadcast receiving apparatus according to claim 1, wherein a channel search is performed when a program is not viewed, and when the searched channel is a new channel, program information of the channel is acquired and stored. A digital broadcast receiving apparatus having the above structure. 5. The digital broadcast receiving apparatus according to claim 2 or 3, wherein a channel search is performed when a program is not viewed, and if the searched channel is a channel included in the list, the channel is searched. A digital broadcast receiving apparatus, characterized in that the program information of (1) is acquired and stored. 6. The digital broadcast receiving apparatus according to claim 5, wherein when the searched channel is a new channel and the channel provides program information, it is configured to be added to the list. Characteristic digital broadcasting receiver. 7. The digital broadcast receiving apparatus according to claim 6, wherein the program information of the new channel is stored.