JP2004172863A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver with which the user can select the channel very conveniently. <P>SOLUTION: This digital broadcast receiver separates the channel list data or a remote control key ID from the digital broadcast waves put on the air from a broadcasting station by means of a demultiplexer 3 and acquires these data by means of a CPU 13. Then the receiver makes the frequency information or channel list used for receiving the broadcast waves put on the air from the broadcasting station to correspond to the single step key having the number indicated by the remote control key ID. When the user presses down the single step key, the receiver selects one channel based on the channel list. In addition, the receiver simultaneously displays a list of channel groups of adjacent single step keys together with the list of the channel group of the single step key. The user can select a desired channel by moving a cursor on the displayed lists by operating a prescribed key. <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. Further, 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, it is difficult to know how many other channels are present.
[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 convenience when selecting a channel.
[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 of the channels corresponding to the assigned key group when operated, and when the assigned key is operated, the channel allocation is performed together with a list of the channel group corresponding to the assigned key. A list of a group of channels corresponding to another assigned key adjacent to the key is simultaneously displayed on the screen, and a channel selection process is performed on a channel selected by a user operation.
[0008]
With the above configuration, the channel group corresponding to the assignment key operated by the user and the channel group corresponding to another assignment key adjacent to the assignment key are simultaneously displayed on the screen in a list. For example, when the user presses the assignment key “3”, in addition to the channel group of the assignment key “3”, for example, the channel group of the assignment key “2” and the channel group of the assignment key “4” are simultaneously displayed on the screen. The user can select a desired channel from the group of channels to select a channel, thereby improving the convenience of channel selection.
[0009]
The configuration may be such that the cursor position on the display list changes by a user operation, and the channel where the cursor is located is selected. Further, the cursor position on the display list may be configured to change by operating a direction key and / or a channel up / down key. Alternatively, the channel group may be displayed in a matrix on the display list, and the cursor position may be shifted up, down, left, and right by operating a direction key. When the cursor position is shifted to the side of the unassigned assigned key corresponding channel group, the unassigned assigned key corresponding channel group is displayed while the assigned key corresponding channel group of the display state on the other side is displayed. A scroll process for hiding the image may be performed. Also, in order to always display the assigned key corresponding channel group where the cursor is located at a fixed position, at the time of the cursor position transition, the unassigned assigned key corresponding channel group is displayed while the assigned key corresponding to another display state is displayed. A scroll process for hiding the corresponding channel group may be performed.
[0010]
Further, it is preferable that the notation portion of the channel in the selected state is displayed in a format distinguishable from the notation portions of the other channels. According to this, the selected channel can be confirmed at a glance on the display list.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing a digital broadcast receiving apparatus 30 of this embodiment for receiving terrestrial digital broadcasts, and FIG. 2 is an explanatory diagram exemplifying a list display screen.
[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 deinterleaving circuit, an error correction circuit, and the like, and demodulates the 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 the video stream and the audio stream to the AV decoder 4, and supplies program information (program name, program start time, program content, etc.) included in the 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, a display list, and the like.
[0019]
The remote control transmitter 10 has various keys and sends various commands to the broadcast receiving device 30. When the keys are operated, a signal light (remote control signal) indicating a command corresponding to the key is emitted. Sent from the department. 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, keys (not shown) on the remote control transmitter 10 on which the numbers "1" to "12" are written 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 EPG data for displaying an EPG screen, information such as channel information (frequency information, 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 channel selection by one-touch key operation. Perform processing and the like.
[0022]
(Channel search processing)
For example, when the power of the receiving apparatus 30 is turned on for the first time, the CPU 13 automatically executes a channel search. The CPU 13 makes the tuner 2 select 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) or the like from among the NIT (Network Information Table) and BIT (Broadcaster Information Table) is included. Is obtained and stored in the memory 14 in association with the above-described frequency information and the like.
[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 broadcasting station transmits the TS number descriptor with “3” added as a remote control key ID, so that the receiving apparatus receives this information and acquires the remote control key ID, and the remote control transmitter 10 XX broadcasting station is set to the one-touch key “3” of the. Thereafter, when the key “3” of the remote control transmitter 10 is pressed by the user, the channel of the XX broadcast station is selected.
[0025]
(Initial tuning by one-touch key operation)
As described above, when the user presses the one-touch key "3" 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. For example, in the case where the OO broadcasting station provides three channels, ch141, ch142, and ch143, when the one-touch key "3" is pressed, ch141 is selected and displayed on the screen.
[0026]
FIG. 2A is an explanatory diagram illustrating a list display screen when the one-touch key “3” is pressed as described above and the channel 141 is selected. This list display screen may be displayed by the first operation of the one-touch key “3”, or may be displayed when the one-touch key “3” is operated twice consecutively. In the upper part of the screen, information on the program currently being broadcast on ch141 acquired from the service information and the current time are displayed by the OSD display function. On the other hand, at the lower right of the screen, a display list based on the information read from the memory 14 is displayed by the OSD display function. In this display list, the channel group (ch 141, ch 142, ch 143) of the pressed one-touch key “3” is arranged at the center, and the one-touch key “2” and the one-touch key “4” adjacent to the one-touch key “3” above and below it. "Is displayed. The channel 141 currently being selected (cursor position) is surrounded by a bold frame, and is displayed in a manner distinguishing from a channel that has not been selected. The color of the channel display portion at the cursor position may be changed.
[0027]
(Tuning process by display list)
The receiving device 30 detects the presence or absence of a key operation of the remote control transmitter 10, and changes the cursor position on the display list when detecting a signal of a direction key or a channel UP / DOWN key. For example, as shown in FIG. 2A, when the right key or the UP key is pressed while the channel 141 is currently selected, the cursor position is shifted to the right and the channel 142 is selected. When the user successively presses the right key or the UP key, the cursor position changes as shown by ch143, ch150,.... On the other hand, when the user operates the left direction key or the DOWN key, the cursor moves in the reverse order in the order of ch101, ch100,. The movement of the cursor corresponds to the magnitude of the number value of the one-touch key. Even if the channel number of the one-touch key “4” is ch130 smaller than ch143, the rightward key or the UP key is operated as described above. When this is done, the cursor position changes to the notation section of ch130.
[0028]
In this embodiment, when the up / down key is pressed, the channel of another adjacent one-touch key is selected. For example, as shown in FIG. 2A, when the up key is pressed in a state where the channel 141 is currently selected, the cursor position is shifted upward and the channel 100 is selected. Similarly, when the down key is pressed, the cursor position is shifted downward to select channel ch150. In this embodiment, the display list is further scrolled in accordance with the transition of the cursor position. For example, when the user presses the down key in a state where the channel 141 is currently selected as shown in FIG. 2A, the channel 150 of the one-touch key “4” is displayed as shown in FIG. , And a channel group (ch 150) of the one-touch key “4” is arranged at the center, a channel group of the one-touch key “3” adjacent to the one-touch key “4” is displayed above the channel group, and The channel group of the one-touch key “5” is displayed on the side.
[0029]
Note that the present invention is not limited to the scroll display in which the channel group in the selected state is arranged at the center (arranged at a fixed position). For example, the cursor may be shifted to the uppermost channel group, and the cursor may be further moved upward. The scroll display may be performed when an appropriate operation is performed. Further, the channel is immediately selected by moving the cursor, but the channel on which the cursor is located may be selected when the enter key is operated. In this case, it is preferable that the display indicating the selected channel is changed in color, for example, and the display indicating the cursor is indicated by a thick frame so that the two displays can be distinguished. Further, the present invention is not limited to such channel selection by the cursor, and the user can input a desired channel number on the display list by using a numerical key of the remote control transmitter 10 (for example, a number 0 to 9 provided separately from the one-touch key). Key, or the like, and then pressing the enter key to select the channel of the number. Further, in the display list in the above example, the one-touch key number is displayed, but, for example, a logo of an identifiable broadcast station may be displayed. Further, in the above example, the channel group assigned to each one-touch key before and after the selected channel is displayed, but the present invention is not limited to this.
[0030]
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 selection is stored in the above-described channel change, and when the one-touch key “3” is operated next time, the channel last selected last (last channel) is selected first. You may make it a channel.
[0031]
【The invention's effect】
As described above, according to the present invention, there is an effect that convenience at the time of channel selection can be 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.
FIGS. 2A and 2B are explanatory diagrams illustrating a list display screen; FIG.
[Explanation of symbols]
1 antenna 2 tuner 3 demultiplexer (DEMUX)
4 AV decoder 12 OSD circuit 13 CPU
14 memory

Claims (7)

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 processing, when the assignment key is operated, simultaneously displays a list of channel groups corresponding to the assignment key and a list of channel groups corresponding to other assignment keys adjacent to the assignment key. A digital broadcast receiving apparatus configured to perform a channel selection process on a channel selected and displayed by a user operation. 2. The digital broadcast receiving apparatus according to claim 1, wherein a cursor position on the display list changes by a user operation, and a channel where the cursor is located is selected. Digital broadcast receiver. 3. The digital broadcast receiving apparatus according to claim 2, wherein a cursor position on the display list is changed by operating a direction key and / or a channel up / down key. 4. The digital broadcast receiving apparatus according to claim 2, wherein a channel group is displayed in a matrix on the display list, and a cursor position is shifted up, down, left and right by operating a direction key. Digital broadcast receiver. In the digital broadcast receiving apparatus according to any one of claims 2 to 4, when the cursor position is shifted to the side of the unassigned assigned key corresponding channel group, the unassigned assigned key corresponding channel group is changed. A digital broadcast receiving apparatus configured to perform a scrolling process of hiding an assigned key corresponding channel group in a display state on the other side while displaying the digital broadcast. The digital broadcast receiving apparatus according to any one of claims 2 to 4, wherein a channel group corresponding to the assigned key where the cursor is located is always displayed at a fixed position. A digital broadcast receiving apparatus configured to perform a scroll process of displaying an assigned key corresponding channel group in another display state while displaying an assigned key corresponding channel group. 7. The digital broadcast receiving apparatus according to claim 1, wherein a notation portion of a channel in a selected state is displayed in a format that is distinguishable from a notation portion of another channel. Digital broadcast receiver characterized by the following.

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