JP4052927B2 - Broadcast receiver - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a broadcast receiving apparatus that receives digital broadcasts and analog broadcasts.
[0002]
[Prior art]
A digital broadcast receiver that receives a digital broadcast using a satellite or a terrestrial wave 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 among a plurality of channels included in the image by demultiplexing processing, a digital signal of the selected channel is taken out and decoded to output a video / audio 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 one that selects one channel from among a plurality of channels of one broadcaster assigned corresponding to a predetermined button (see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-149451
[Problems to be solved by the invention]
In terrestrial digital broadcasting, the same broadcaster (same broadcast station), network, etc. can perform multiple channel broadcasts in various forms as a group, such as standard definition broadcast, high-definition broadcast, radio broadcast, Data broadcasting can be performed. On the other hand, at the beginning of terrestrial digital broadcasting, it is expected that the same company will carry out simultaneous broadcasting that provides programs with the same content using both terrestrial digital broadcasting and analog broadcasting. In spite of this, the number of channels will increase, and it is expected that users who have never watched digital broadcasts (especially elderly people and women who are not good at home appliance operations) will be confused.
[0006]
In view of conventional digital broadcast and analog broadcast channel selection methods, it is considered that a channel selection operation conscious of input switching is taken. For example, if you want to view analog broadcasts while viewing digital terrestrial broadcasts, After operating the input switching key for switching to analog broadcasting, the position key of the desired analog broadcasting company is pressed.
[0007]
Also, when the user customizes the operator position key of the remote control transmitter, it is necessary to register the operator position key for each input type (analog broadcasting / digital broadcasting), and the user must be aware of the input type here as well. In other words, it makes the user aware of the trouble and difficulty of operation.
[0008]
In view of the above circumstances, an object of the present invention is to provide a broadcast receiving apparatus that can perform channel selection without the user being aware of analog broadcasting and digital broadcasting.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problem, the broadcast receiving apparatus of the present invention associates a grouped digital broadcast channel group with an assignment key and associates an analog broadcast channel corresponding to the group with the assignment key; Means for storing channel selection related information of a broadcast channel group and an analog broadcast channel, and performs channel selection processing of one channel of the corresponding digital broadcast channel group when the allocation key is operated, and Means for performing channel selection processing of the analog broadcast channel by continuous operation.
[0010]
With the above configuration, the user is not aware of the distinction between terrestrial digital broadcast waves and analog broadcast waves (without requiring an input switching operation). Many users with mental models such as “operate the operator position key” and “select the channel = select the operator” (for example, elderly people and women who are not good at home appliance operation) You can select a channel. Further, when the user customizes the operator position key of the remote control transmitter, it is not necessary to register the operator position key for each input type.
[0011]
The process of making the grouped channel group correspond to the assignment key may be 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. .
[0012]
When the user does not want to receive the analog broadcast, the analog broadcast channel may not be selected even if the assignment key is continuously operated. Further, in such a configuration, it may be configured such that a setting that it is not desired to receive the analog broadcast can be set for each assigned key. It is preferable that a menu screen for the setting is prepared, the user can perform a setting operation while viewing the screen, and the setting state is displayed on the screen.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0014]
In FIG. 1, terrestrial antennas 1A and 1B are arranged outdoors in a predetermined direction and receive terrestrial broadcast signals. The terrestrial antennas 1A and 1B give the received signals to the tuners 2A and 2B.
[0015]
The analog tuner 2A selects an RF (high frequency signal) from the antenna 1 and converts it into an intermediate frequency (IF). This tuner 2A generates a first-stage amplifier that amplifies the received RF signal, an AGC amplifier whose gain is variable by an external control voltage, and an IF signal that is a difference frequency between the local frequency generated by the voltage-controlled oscillator and the received RF signal. And a PLL circuit for controlling the voltage controlled oscillator to a predetermined constant frequency output state based on channel selection data supplied from the system controller 13, an intermediate frequency amplifier, and the like. The intermediate frequency (IF) circuit 3 includes various trap circuits and amplifies a necessary frequency band from the intermediate frequency signal output from the tuner 2A with high gain. The detection circuit 4 detects the amplified video signal of the intermediate frequency to extract a color television signal (luminance signal, color signal, synchronization signal) and detects the audio signal of the intermediate frequency.
[0016]
The digital tuner 2B has the same frequency selection function as the analog tuner 2A described above, and also includes a demodulation circuit, a deinterleave circuit, an error correction circuit, etc., and demodulates the selected digital modulation signal to output a transport stream. .
[0017]
A demultiplexer (DEMUX) 5 separates the transport stream into a moving picture experts group 2 (MPEG2) video stream, an audio stream, and PSI / SI (Program Specific Information / Service Information). The demultiplexer 5 supplies the video stream and the audio stream to the digital broadcast signal processing unit 6 and supplies program information included in the PSI / SI to the system controller 13. Note that a plurality of channels are multiplexed in the transport stream, and the process for selecting an arbitrary channel from among these is the packet ID of the arbitrary channel in the transport stream from the PSI / SI. It becomes possible by taking out data such as whether or not it is multiplexed. The transport stream can also be selected based on PSI / SI information.
[0018]
The digital broadcast signal processing unit 6 includes a video decoder that decodes a video stream and an audio decoder that decodes an audio stream. The video decoder decodes the input variable length code to obtain a quantization coefficient and a motion vector, and performs inverse DCT conversion, motion compensation control based on the motion vector, and the like. The audio decoder decodes the input encoded signal to generate audio data. The video data / audio data generated by the decoding is D / A converted into a video signal / audio signal.
[0019]
The multiplexer (MUX) 7 inputs video / audio signals by analog broadcasting and video / audio signals by digital broadcasting. The multiplexer 7 selects and outputs one of the video / audio signals according to an instruction from the system controller 13.
[0020]
The output processing unit 8 amplifies the luminance signal in the video signal selected and output by the multiplexer 7 to a size necessary for driving the image receiving unit (CRT) 10 or generates a color subcarrier. Is used to demodulate the color difference signal from the carrier color signal, and this processed signal is supplied to the image receiving unit 10. In addition, the audio signal selected and output by the multiplexer 7 is amplified and supplied to the speaker 9. Furthermore, the output processing unit 8 performs processing for incorporating an OSD signal output from an OSD (on-screen display) circuit 15 described later into the received video signal.
[0021]
The OSD circuit 15 processes video data based on character information and color information instructed to be output from the system controller 13 and outputs the processed video data to the output processing unit 8 as an OSD signal. The OSD circuit 15 can display a menu screen and various setting screens.
[0022]
As shown in FIG. 2, the remote control transmitter 17 is provided with various keys and sends various commands to the broadcast receiving device 30. When the key is operated, the remote control transmitter 17 means a command corresponding to the key. Signal light (remote control signal) is transmitted from the light emitting unit. The remote control light receiver 16 receives the signal light, converts it into an electrical signal, and gives it to the system controller 13. In this embodiment, a key provided with numbers “1” to “12” provided in the remote control transmitter 10 is referred to as an assigned key (hereinafter referred to as a one-touch key). In this case, it is assumed that one broadcaster broadcasts using one transport stream, and one broadcaster is associated with one one-touch key.
[0023]
The memory (for example, RAM, EEPROM, flash memory, etc.) 14 has analog channel information (frequency information, information such as channel list and business name corresponding to position), digital channel information (frequency information, remote control key ID). Information such as channel list and business name corresponding to each other) and various setting information are stored.
[0024]
The modem 19 operates under the control of the system controller 13 in a dial-up connection when transmitting, for example, billing information for pay broadcasting and data in a bidirectional data service.
[0025]
The IC card 18 stores, in its built-in memory, key information for enabling viewing of pay broadcasts, purchase history information of PPV programs to be charged for each program, and the like.
[0026]
The system controller 13 performs overall control in the digital broadcast receiving apparatus 30. In particular, as the processing according to the present invention, various setting processing, channel search processing, remote control key ID acquisition processing, one-touch key assignment processing, Performs tuning processing for one-touch key operations.
[0027]
(Various setting processes)
As shown in FIGS. 3, 4, and 5, “simultaneous broadcast setting” on the menu screen is called and the following operation is performed. The user moves the cursor to the item to be set with the up and down arrow keys of the remote control transmitter 17 and presses the enter key. As items, “seamless cyclic channel selection setting”, “digital broadcast priority display setting”, and “digital / analog broadcast display setting” are prepared. In “digital / analog broadcast display setting”, either “set for each operator's one-touch key” or “not set for each operator's one-touch key (all display)” is selected. Details of “digital / analog broadcast display setting” will be described later. Also, “Yes” cannot be selected for “Seamless Cyclic Tuning Setting” and “Yes” cannot be selected for “Digital Broadcast Priority Display Setting”, and when one is selected, the other is not selected. It is processed like so.
[0028]
(Channel search process)
For example, when the power is turned on for the first time, the CPU 13 automatically selects the lowest frequency in the UHF band at which the terrestrial digital broadcast is transmitted to the digital tuner 2B to perform the station determination. If it is determined that it is a station, channel information (frequency information, station information, channel list data, etc.) is extracted and stored in the memory 14. This process is continued up to the highest frequency by sequentially increasing the frequency (for example, from 12 ch to 62 ch). For analog broadcasting, a table in which a region code is associated with a channel list that can be received at the location is stored in a memory, and the list is selected by inputting a region code by the user. FIG. 8 shows a list selected by inputting the region code.
[0029]
(Remote control key ID acquisition process)
In the channel search of the above-mentioned digital broadcasting, the PSI is separated from the transport stream at the stationed frequency, the remote control key ID of the NIT (Network Information Table) is obtained, and is associated with the above-described channel information and the like. Store in the memory 14. The associated channel table is illustrated in FIG.
[0030]
(One-touch key assignment process)
Channel information for receiving the broadcast station is associated with the one-touch key having the number indicated by the acquired remote control key ID. That is, when the broadcasting station A transmits “1” as the remote control key ID and transmits it, the receiving device receives this information and acquires the remote control key ID, and the one-touch key “1” of the remote control transmitter 17. Set A broadcast station. Thereafter, when the key “1” of the remote control transmitter 17 is pressed by the user, the channel of the A broadcast station is selected.
[0031]
Here, in the tables illustrated in FIGS. 7 and 8, since the one-touch key “1” is the same company, the one-touch key “1” is assigned to both the terrestrial digital broadcast and the analog broadcast of the company A. Since the one-touch key “2” is a different business operator, the user is asked to select either the terrestrial digital business operator B or the analog business operator D. The one-touch keys “3” and “4” can be registered as they are. However, in order for the user to recognize that the one-touch keys “3” and “4” are the same business operator, the business operator one-touch key registration is performed after the message is presented to the user.
[0032]
(Channel selection processing by one-touch key operation)
As described above, when the one-touch key “1” of the remote control transmitter 10 is pressed by the user, a process of selecting the channel of the carrier A is performed. In digital broadcasting, a plurality of channels are prepared in each broadcasting station. Therefore, a process of selecting one channel from the channel list is performed. Here, it is considered that each broadcasting station tends to decrease (younger) the number of the representative channel in the provided channel group, so the channel to be selected first is included in the channel group. The channel with the smallest number is set. If it is desired to select another digital channel of the operator A in this state, the channel up / down key of the remote control transmitter 17 may be operated.
[0033]
When “seamless cyclic channel selection setting” is selected in the simulcast setting, when the user touches the one-touch key “1” successively, the analog broadcast of the carrier A is received. That is, the system controller 13 reads out channel tuning information corresponding to the pressed one-touch key number from the memory 14, gives a control signal to the analog tuner 2A, and selects analog broadcasting for the multiplexer 7. Issue a command. Furthermore, when the one-touch key “1” is continuously pressed by the user, the digital broadcast of the operator A is received again.
[0034]
When “digital broadcast priority display setting” is selected in the simulcast setting, even if the user repeatedly presses the operator's one-touch key, the channel of the operator's digital broadcast is always selected.
[0035]
In addition, for example, when only analog broadcasting is assigned to a certain one-touch key, or initially, analog broadcasting and digital broadcasting are assigned, but only digital broadcasting is closed when digital broadcasting is closed (re-channel search or the like). In this case, even if “digital broadcast priority display setting” is selected, analog broadcast reception processing is performed with the one-touch key.
[0036]
When “Set for each operator's one-touch key” is selected in “Digital / Analog broadcast display setting”, a list of digital operators and analog operators for each one-touch key is displayed as shown in FIG. Is displayed. The following operations are performed on this list screen. When this list screen is first displayed, the cursor is displayed in the portion of the operator position key “1”. The user moves the cursor to the key number to be set with the left and right arrow keys of the remote control transmitter 17 and presses the enter key. When the enter key is pressed, the D / A broadcast display setting menu for the operator one-touch key is displayed and a cursor is displayed. Use the up and down arrow keys on the remote control transmitter 17 to move the cursor to the item to be set, and press the enter key. Here, if “display digital broadcasting” is selected, the operator one-touch key (the operator channel) is processed in the same manner as the “digital broadcast priority display setting”, and the user Even if the operator's one-touch key is repeatedly pressed at the time of channel selection, the channel of the terrestrial digital broadcast of the operator desired by the user is always selected.
[0037]
In the above example, all channel searches from 12ch to 62ch are performed. However, for digital broadcasting, a table in which a region code is associated with a channel list that can be received in that region is stored in a memory. In addition, only the channels in the list may be received and information may be taken in by inputting a region code by the user. In addition, the one-touch keys are associated with each other based on the acquired remote-control key ID, but the channel group (group) of each broadcaster is associated with the one-touch key of the user's favorite number without using the remote-control key ID. It is good.
[0038]
Moreover, although the case where the channel selected first in the operation of the one-touch key is the channel with the smallest number in the channel group has been illustrated, the present invention is not limited to this. For example, the channel selected in the above-described channel change is stored, and when the one-touch key is operated next time, the channel selected last (the last channel) is selected as the first channel. You may make it do.
[0039]
In the above example, it is assumed that one broadcaster is broadcasting with one transport stream, and one broadcast operator is associated with one one-touch key. When a broadcaster (broadcasting station) broadcasts using a plurality of transport streams, or conversely, when a plurality of broadcasters (broadcasting stations) exist in one transport stream However, it is not necessarily limited to selecting a broadcaster with a one-touch key, and a group of channels in one or more transport streams may be made into one group. In other words, what group unit the one-touch key is set to may be arbitrarily determined according to the form in which the broadcast is performed.
[0040]
【The invention's effect】
As described above, according to the present invention, the user is not aware of the distinction between terrestrial digital broadcast waves and analog broadcast waves (without requiring an input switching operation), for example, Even a user having a mental model such as “operating the operator position key of the remote control transmitter” “selecting the channel = selecting the operator” can easily select a desired channel. In addition, when the user customizes the operator position key of the remote control transmitter, there are various effects such as no need to register the operator position key for each input type.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a broadcast receiving apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view showing a remote control transmitter.
FIG. 3 is an explanatory diagram showing a setting screen.
FIG. 4 is an explanatory diagram showing a setting screen.
FIG. 5 is an explanatory diagram showing a setting screen.
FIG. 6 is an explanatory diagram showing a setting screen.
FIG. 7 is an explanatory diagram showing a digital broadcast channel list in a memory.
FIG. 8 is an explanatory diagram showing an analog broadcast channel list in a memory.
FIG. 9 is an explanatory diagram for explaining a correspondence relationship between keys of a remote controller and a business operator.
[Explanation of symbols]
1A, 1B Antenna 2A Analog tuner 2B Digital tuner 5 Demultiplexer (DEMUX)
13 System controller 14 Memory 15 OSD circuit 17 Remote control transmitter

Claims (4)

Means for associating a grouped digital broadcast channel group with an assigned key and associating an analog broadcast channel corresponding to the group with the assigned key; means for storing channel selection related information of the digital broadcast channel group and analog broadcast channel; , When selecting the channel when the assignment key is operated, sequentially select the channel including the analog broadcast channel, or select only the digital broadcast channel group without including the analog broadcast channel. Whether to perform channel selection processing sequentially only in the corresponding digital broadcast channel group when the assignment key is operated based on the setting content by the setting means Or sequentially including the analog broadcast channel It broadcast receiving apparatus characterized by comprising means for performing a tuning process Le, a.   2. The broadcast receiving apparatus according to claim 1, wherein the process of associating the grouped channel group with the assignment key is performed on an assignment key having a number indicated by the ID based on a remote control key ID included in the digital broadcast wave. A broadcast receiving apparatus characterized in that the broadcast receiving apparatus is configured to perform the above. 3. The broadcast receiving apparatus according to claim 1, wherein the setting means displays a menu for the setting on the screen so that a user can perform a setting operation while looking at the screen of the apparatus. In addition , the broadcast receiving apparatus displays the contents of the user operation on the screen . 4. The broadcast receiving apparatus according to claim 1, wherein the setting unit accepts a setting of sequential channel selection only for a digital broadcast channel group for each assigned key without including the analog broadcast channel. A broadcast receiving apparatus characterized by the above.

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