JP2004140443A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver superior in operability for the channel selection. <P>SOLUTION: A demultiplexer 3 separates channel list data and a remote controller key ID from digital broadcast waves radiated from a broadcast station. A CPU 13 acquires these data. It relates frequency information and channel lists for receiving the broadcast station to one-touch keys having numbers shown by the remote control key ID. A user pushes down the one-touch key to select one channel, based on a channel list in a memory 14. The user successively pushes down the same one-touch key to select the next channel in the channel list. Similarly, the user selects the next channel in the list every pushing down of the one-touch key. Thus, the user continuously may operate the one-touch key to select desired channels from among a channel group. <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 or terrestrial waves selects an arbitrary broadcast wave from a plurality of broadcast waves received through a satellite antenna or a terrestrial antenna with a digital tuner, and selects the selected broadcast wave. , An arbitrary channel is selected from the plurality of channels included in the above by demultiplex processing, a digital signal of the selected channel is extracted, and a video / audio signal is output by decoding the digital signal.
[0003]
By the way, in such digital broadcasting, a key (one-touch key, preset key, etc.) is assigned to each broadcaster, and a desired broadcaster's channel can be directly selected by operating the assigned key. Is considered. As a related art related to this, there is a technique of selecting one channel from a plurality of channels of one broadcaster assigned to a predetermined button (see Patent Document 1).
[0004]
[Patent Document 1]
JP 10-149451 A
[Problems to be solved by the invention]
However, in digital broadcasting, the same broadcaster (same broadcasting station), network, and the like can perform multi-channel broadcasting in various forms as one group. For example, standard-definition broadcasting, high-definition broadcasting, and radio broadcasting , And data broadcasting. Therefore, if one-touch keys are assigned to individual channels, the number of keys becomes enormous, and the remote control transmitter is enlarged. Also, as in the technique of the above-mentioned conventional publication, even if one channel can be selected from a plurality of channels of a broadcaster using a preset key, the user looks at another channel among the plurality of channels. If you want to change the channel by operating the channel up / down key, you must change your fingertip from the preset key to the channel up / down key. bad.
[0006]
The present invention has been made in view of the above circumstances, and has as its object to provide a digital broadcast receiving apparatus that is excellent in operability of channel selection.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a digital broadcast receiving apparatus according to the present invention includes: means for associating a grouped channel group with an assignment key; means for storing tuning-related information of the channel group; Means for performing channel selection processing of one channel in the corresponding channel group when operated, and sequentially selecting another channel from the corresponding channel group each time the assigned key is operated. It is characterized in that it is configured to broadcast.
[0008]
With the above configuration, one channel can be selected from among a plurality of channels in the group with the assignment key, and when the user wishes to see another channel among the plurality of channels. Can be performed by repeatedly operating the assigned key, and the operability of channel selection is improved.
[0009]
It is preferable that the grouping of the channel groups is performed corresponding to any one of the same broadcaster, the same network, and the same transport stream. Further, the process of associating the grouped channel groups with the assignment key is configured to be performed on the assignment key having the number indicated by the ID based on the remote control key ID included in the digital broadcast wave. Is also good. Alternatively, the process of associating the grouped channel groups with the assignment key may be performed on the assignment key of the number designated by the user.
[0010]
Also, the last selected channel in the grouped channel group is stored, and when the allocation key corresponding to the group is operated next, the last selected channel is first selected. It may be configured to localize. Further, a means for displaying a list of grouped channel groups on a screen and displaying the selected channel and other channels so that the user can distinguish them from each other may be provided.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment for receiving terrestrial digital broadcast, FIG. 2 is a plan view of a remote control transmitter, and FIG. 3 is a description showing a one-touch setting menu screen. FIG. 4 is an explanatory diagram showing a screen on which a list of channels belonging to a group is displayed.
[0012]
In FIG. 1, a terrestrial antenna 1 is arranged outdoors in a predetermined direction, and receives a terrestrial digital broadcast signal. The terrestrial antenna 1 supplies a received signal to a terrestrial digital tuner 2.
[0013]
The terrestrial digital tuner 2 extracts a signal of a specific frequency from high-frequency digital modulation signals including video and audio data. The terrestrial digital tuner 2 includes a demodulation circuit, a deinterleave circuit, an error correction circuit, and the like, and demodulates a selected digital modulation signal to output a transport stream.
[0014]
The demultiplexer (DEMUX) 3 separates the transport stream into a video stream of MPEG2 (Moving Picture Experts Group2), an audio stream, and a PSI / SI (Program Specific Information / Service Information). The demultiplexer 3 supplies a video stream and an audio stream to the AV decoder 4, and supplies program information and the like included in PSI / SI to the CPU 13. Note that a plurality of channels are multiplexed in the transport stream, and a process for selecting an arbitrary channel from among these is performed by selecting a packet ID in the transport stream from the PSI / SI. This is possible by extracting data such as whether the data is multiplexed. Also, the selection of the transport stream can be performed based on the PSI / SI information.
[0015]
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.
[0016]
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 processing circuit 6 receives the audio data output from the AV decoder 4 and performs D / A conversion to generate, for example, a right (R) sound analog signal and a left (L) sound analog signal.
[0017]
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 unit (a set of left and right audio output terminals, a video output terminal, and the like). The output unit is provided with a video / audio code 17 and a monitor including a picture tube 16a and a speaker 16b. 16 are connected.
[0018]
The OSD (on-screen display) circuit 12 outputs to the adder 20 video data based on character information and color information instructed by the CPU 13 to output. 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 can display a menu screen, various setting screens, and the like.
[0019]
As shown in FIG. 2, the remote control transmitter 10 is provided with various keys and sends various commands to the broadcast receiving device 30. When the keys are operated, the commands corresponding to the keys are indicated. Signal light (remote control signal) is transmitted from the light emitting unit. 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. In this embodiment, the keys provided on the remote control transmitter 10 and denoted by numerals “1” to “12” are assigned keys (hereinafter, referred to as one-touch keys). Here, it is assumed that one broadcaster is broadcasting with one transport stream, and one one-touch key is associated with one broadcaster.
[0020]
In a memory (for example, RAM, EEPROM, flash memory, etc.) 14, in addition to information for displaying an EPG screen, channel information (frequency information, information such as a channel list corresponding to a remote control key ID, a broadcast station name, etc.) Is stored.
[0021]
The CPU 13 performs overall control of the digital broadcast receiving apparatus 30. In particular, the processing according to the present invention includes channel search processing, remote control key ID acquisition processing, one-touch key assignment processing, and one-touch key operation. Perform processing and the like.
[0022]
(Channel search processing)
For example, when the user receives a channel search instruction from the menu screen when the power is turned on for the first time, the CPU 13 makes the tuner 2 tune to the lowest frequency of the UHF band in which the terrestrial digital broadcast is transmitted, and makes the station determination. . If it is determined to be a station, the frequency information, station information (broadcasting station series name, etc.) and channel list data are extracted and stored in the memory 14. This process is sequentially increased to the highest frequency (for example, from 12 ch to 61 ch).
[0023]
(Remote control key ID acquisition processing)
At the time of the above-described channel search, PSI is separated from the transport stream at the frequency of a local station, and a remote control key ID (TS number descriptor) of a NIT (Network Information Table) is obtained from the PSI. It is stored in the memory 14 in association with it.
[0024]
(One-touch key assignment processing)
The frequency information or the like for receiving the broadcast station is made to correspond to the one-touch key of the number indicated by the obtained remote control key ID. That is, XX broadcast station adds "8" as a remote control key ID to the TS number descriptor and transmits the same. The receiving apparatus receives this information and obtains the remote control key ID. XX broadcasting station is set to the one-touch key 8 of. Thereafter, when the key 8 of the remote control transmitter 10 is pressed by the user, the channel of the broadcasting station XX is selected.
[0025]
(Tuning process by one-touch key operation)
As described above, when the user presses the one-touch key "8" of the remote control transmitter 10, the process of selecting the channel of the XX broadcasting station is performed. In digital broadcasting, a plurality of channels are prepared for each broadcasting station. Since it is possible, a process of selecting one channel from the channel list is performed. Here, since it is considered that each broadcasting station tends to reduce the number of a representative channel among the provided channel groups (younger), a channel to be selected first is included in the channel group. The channel with the lowest number is set.
[0026]
When the one-touch key “8” is continuously pressed by the user, the channel with the next smallest number is selected from the channel list. Similarly, every time the one-touch key is pressed, the channel with the next smallest number is selected, and pressing the key several times returns to the first channel. Here, when the pressing interval of the one-touch key is within a predetermined time, only the process of advancing (changing) the channel on the channel list without actually performing the channel selection is performed, and the one-touch key is pressed. After that, when a predetermined time has passed, a process of actually selecting the channel at that time may be performed. According to this, the channel change operation time can be shortened, which is advantageous when the number of channels is large.
[0027]
As described above, one channel can be selected from a plurality of channels in the channel list with one-touch key, and when the user wishes to see another channel among the plurality of channels, It is only necessary to repeatedly operate the one-touch key, and the operability of channel selection is improved.
[0028]
In the above example, the channel search is performed for all channels from channel 12 to channel 61. However, a table in which the area code is associated with a list of channels that can be received at that location is stored in the memory, and the user performs the channel search. By inputting the area code, information may be received and received only for the channels in the list. In addition, one-touch keys are associated with each other based on the obtained remote control key ID. However, the channel group (group) of each broadcaster can be made to correspond to a one-touch key of a user's favorite number regardless of the remote control key ID. It may be. For example, when the one-touch key setting menu is called on the menu screen, the setting screen is displayed as shown in FIG. On this setting screen, the one-touch key “1” is associated with the broadcasting station of the broadcasting station list number “000”. If it is desired to change the broadcasting station corresponding to the one-touch key "1" to the broadcasting station of the broadcasting station list number "004", first move the cursor to the "1" part of the one-touch key setting item. Then, the direction key of the remote control transmitter is operated, and the enter key is pressed. When the enter key is pressed, the cursor moves to the lower list section. Then, as shown in FIG. 7B, the direction key of the remote control transmitter is operated so as to bring the cursor to the location of “004” of the broadcast station list number, and the cursor is held at the location of “004”. Then, press the enter key. With this operation, the one-touch key “1” is associated with the broadcasting station of the broadcasting station list number “004”. The user only has to repeat the above operation for the one-touch key to be set. In consideration of a case where the broadcast station list cannot be displayed on one screen, scroll display is preferably performed.
[0029]
Further, the case where the channel to be selected first in the operation of the one-touch key is the channel with the smallest number in the channel group has been exemplified, but the present invention is not limited to this. For example, the channel selected in the above-described channel change is stored, and the next time the one-touch key “8” is operated, the channel last selected last (last channel) is first selected. Channel.
[0030]
Further, a list of channels belonging to a group may be displayed on the screen by the OSD function as shown in FIG. For example, a "screen display" key is provided on the remote control transmitter, the display is performed when this key is operated, and the display is turned off when the key is operated again. A mode may be provided, and when this mode is selected by the user, a channel list is displayed for a certain time when a one-touch key is operated. In the channel list screen shown in FIG. 9A, a color different from the color of the display frame of the other channel is set for the selected channel, and the selected channel number is also displayed in another right frame. It is to be displayed. Also, information obtained from the program information of the channel, current time, and the like are added. By providing the channel list display function in this way, it is possible to see at a glance which channel is to be selected next by continuous operation of the one-touch key. In FIG. 11A, the image may be automatically displayed for several seconds immediately after selecting a channel, not only when the image display key is pressed or in the menu mode. Note that the channel list screen shown in FIG. 3B is configured to display the number of the selected channel in the right frame and to display program information of other channels in the group. In this display state, the user can select the channel on which the program information is to be displayed by operating the left and right keys of the remote control transmitter 10. With such a list display, it is possible to easily know what program is being broadcast on another channel in the group while viewing the reception screen of a certain channel.
[0031]
Further, in the above example, it is assumed that one broadcaster is broadcasting with one transport stream, and one one-touch key is associated with one broadcaster. Considering a case where a broadcaster (broadcasting station) broadcasts using a plurality of transport streams, or conversely, a case where a plurality of broadcasters (broadcasting stations) exist in one transport stream. However, the present invention is not necessarily limited to selecting a broadcasting company with one-touch keys, and a channel group in one or more transport streams may be set as one group. That is, what kind of group the one-touch keys are set to may be arbitrarily determined according to the form of broadcasting.
[0032]
Further, by operating the channel up / down key, a channel having a larger numerical value or a channel having a smaller numerical value may be selected in a group in this case. In this case, all the channels are selected for one group. If the channel up / down key is further operated after this, it is preferable to proceed to the channel selection of the next group.
[0033]
【The invention's effect】
As described above, according to the present invention, one channel can be selected from among a plurality of channels in a group by an assignment key, and the user wants to see another channel among the plurality of channels. In this case, it is only necessary to repeatedly operate the assigned key, and the operability of channel selection is improved.
[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 plan view showing a remote control transmitter.
FIGS. 3A and 3B are explanatory diagrams showing a one-touch setting menu screen. FIG.
FIGS. 4A and 4B are explanatory diagrams showing a state in which a list of channels belonging to a group is displayed on a screen. FIG.
[Explanation of symbols]
1 antenna 2 tuner 3 demultiplexer (DEMUX)
4 AV decoder 12 OSD circuit 13 CPU
14 memory

Claims (6)

Means for associating a grouped channel group with an assignment key; means for storing channel selection related information of the channel group; and tuning of one channel in the corresponding channel group when the assignment key is operated. Means for performing a process, wherein each time the assignment key is operated, a different channel is sequentially selected from a channel group corresponding to the assigned key, and the digital broadcast receiving apparatus is characterized in that . 2. The digital broadcast receiving apparatus according to claim 1, wherein the grouping of the channel groups is performed corresponding to any one of the same broadcaster, the same network, and the same transport stream. Digital broadcast receiving device. 3. The digital broadcast receiving apparatus according to claim 1, wherein the process of associating the grouped channel groups with the assignment key is based on a remote control key ID included in the digital broadcast wave. A digital broadcast receiving apparatus configured to perform the process on an assignment key having The digital broadcast receiving apparatus according to claim 1 or 2, wherein the process of associating the grouped channel groups with an assignment key is performed on an assignment key of a number designated by a user. A digital broadcast receiving device characterized by the above-mentioned. 5. The digital broadcast receiving apparatus according to claim 1, wherein the last selected channel in the grouped channel group is stored, and then an assignment key corresponding to the group is operated. The digital broadcast receiving apparatus is configured to select the last selected channel first when it is performed. 6. The digital broadcast receiving apparatus according to claim 1, wherein a list of grouped channel groups is displayed on a screen, and a selected channel and another channel are distinguished by a user. A digital broadcast receiving apparatus comprising means for displaying the digital broadcast as described above.

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