JP2004312447A - Broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver that can easily carry out a channel change corresponding to the occurrence of a change in a channel even when the change takes place in the channel of terrestrial analog broadcasting attended with the introduction of terrestrial digital broadcasting. <P>SOLUTION: A user can directly display a channel change setting picture by operating an analog CH conversion key of a remote control transmitter 19 without the need for calling the channel change setting picture from a menu picture. In the channel change setting picture, a number list is displayed, which lists up numbers of channels corresponding to positions and whose stations no longer exist and numbers of channels not corresponding to the positions and having stations. The user operates the remote control transmitter 19 to select a reception channel from the number list, finds out a transfer destination channel and sets channel change. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
[Industrial applications]
The present invention relates to a broadcast receiving device capable of receiving a television broadcast.
[0002]
[Prior art]
A digital broadcast receiving apparatus that receives digital broadcast using terrestrial waves selects an arbitrary broadcast wave from a plurality of broadcast waves received through a terrestrial antenna using a digital tuner, and selects a plurality of broadcast waves included in the selected broadcast wave. An arbitrary channel is selected from these channels by demultiplex processing, a digital signal of the selected channel is extracted, and a video / audio signal is output by decoding the digital signal. In addition, there is known a technique capable of receiving both analog broadcasting and terrestrial digital broadcasting, and eliminating the influence of modulation disturbance or the like caused by digital broadcasting channels (see Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-374469 A
[Problems to be solved by the invention]
Meanwhile, terrestrial digital broadcasting is scheduled to start broadcasting in Japan in 2003. The channel used for terrestrial digital broadcasting is a UHF (Ultra High Frequency) band. In this UHF band, channels of conventional terrestrial analog broadcasting and terrestrial digital broadcasting are mixed. Channels to be allocated will mainly be 13 to 32 channels that are rarely used in terrestrial analog broadcasting.
[0005]
However, if channels cannot be allocated for terrestrial digital broadcasting in a certain area, the channels of terrestrial analog broadcasting are changed (this change is hereinafter referred to as analog-to-analog conversion). For example, if terrestrial digital broadcasting uses 20 ch, terrestrial analog broadcasting of broadcasting station A, which previously used 20 ch, moves to, for example, 50 ch. Also, when 20 ch is set in position 8 of the receiving apparatus, it is necessary to reset 50 ch in position 8 in order to continuously watch the program of the A broadcast station at the same position. For this setting, for example, a trader (a dealer or the like) visits each home and spends a great deal of money and time. Of course, the user can call the channel setting screen from the menu screen to perform the setting operation. However, there are many people who do not know the operation until the channel setting screen is called or are troublesome.
[0006]
In view of the above circumstances, the present invention provides a broadcast receiving apparatus that can easily perform a channel change process on a broadcast receiving device side corresponding to a change in a terrestrial analog broadcast channel accompanying the introduction of terrestrial digital broadcast. It is intended to provide a device.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the broadcast receiving apparatus of the present invention has a tuner that receives at least an analog broadcast, a storage control unit that stores correspondence information between a channel number and a position number, and a user operating a specific key. The notation based on the correspondence information and the notation indicating the channel determined to be unlocalized among the channels associated with the position number when it is performed, and the determination that the channel is unassigned and the channel is unassigned. Means for displaying a channel change setting screen including a notation indicating the performed channel list, and means for performing a channel change setting based on information input on the channel change setting screen. I do.
[0008]
With the above configuration, the channel change setting screen is directly displayed if the user operates the specific key without calling the channel change setting screen from the menu screen. In this screen display, the notation based on the correspondence information and the notation indicating the channel determined to have been delocalized among the channels associated with the position number and the channel not associated with the channel are local. The notation indicating the channel list determined to be is performed. In the so-called analog-to-analog conversion, analog broadcasting that has been received until now will be transferred to another channel, and digital broadcasting will be present in the original channel, but it will be stationed off as analog broadcasting. By performing the notation as described above, the channel can be easily changed.
[0009]
A cursor indicating a currently set channel is displayed on the channel change setting screen, and the cursor is displayed at a position corresponding to the channel determined to have been delocalized according to a predetermined operation of the user. You may.
[0010]
Further, the broadcast receiving apparatus of the present invention includes a tuner for receiving at least an analog broadcast, a storage control means for storing correspondence information between a channel number and a position number, and the position number when a specific key is operated by a user. The channel change setting screen includes a notation indicating a channel determined to be unlocalized among channels associated with the channel and a notation indicating a channel list determined to be stationed in an unassociated channel. Means for performing display and means for performing channel change setting based on information input on the channel change setting screen.
[0011]
With the above configuration, the channel change setting screen is directly displayed if the user operates the specific key without calling the channel change setting screen from the menu screen. In this screen display, a notation indicating a channel determined to be unlocalized among the channels associated with the position number and a channel list determined to be stationed by an unassociated channel are shown. Notation is performed. In the so-called analog-to-analog conversion, the broadcast that could be received until now is shifted to another channel, and although the original channel has digital broadcast, the analog broadcast is deallocated. By changing the notation as described above, the channel can be easily changed.
[0012]
In these configurations, a number on the channel list determined to be stationed is selected according to a predetermined selection operation by the user, and the number is displayed on a notation indicating the channel determined to be unlocalized. The configuration may be such that channel setting is performed through processing. Alternatively, the channel setting may be performed through a process of displaying an input number by a user's ten-key operation on a notation indicating the channel determined to be unlocalized. Further, in these configurations, when a channel setting is performed through the above processing, the display of the corresponding number from the channel list determined to be the station may be erased.
[0013]
In these configurations, the channel list determined to be stationed includes the channel associated with the position number and distinguishes the channel associated with the position number from the channel not associated with the position number. May be displayed as follows.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6. Here, a digital / analog broadcast receiving apparatus that receives both terrestrial digital broadcast and terrestrial analog broadcast is illustrated.
[0015]
FIG. 1 is a block diagram showing a broadcast receiving apparatus 30 of this embodiment for receiving both terrestrial digital broadcasting and terrestrial analog broadcasting. FIG. 2 is a flowchart showing processing for changing channels. FIG. 3 is an explanatory diagram showing a remote control transmitter, and FIG. 4 is an explanatory diagram showing a channel change screen. FIG. 5 is an explanatory diagram showing the mode of movement of the cursor, and FIG. 6 is an explanatory diagram showing an example of the channel change setting.
[0016]
In FIG. 1, a terrestrial antenna 1 receives a terrestrial broadcast wave and supplies a received signal to a terrestrial digital tuner 2 and a terrestrial analog tuner 4. Each tuner includes a channel selection processing circuit, a mixer (mixer), and the like. The mixer mixes the signal of the desired channel and the local oscillation signal to generate an intermediate frequency signal. The circuit that generates the local oscillation signal includes, for example, a variable-capacitance diode whose capacitance changes according to the applied voltage, and changes it according to the frequency of the desired channel so that a signal of a constant intermediate frequency is output from the mixer. Generated local oscillation signal. The tuning processing circuit receives data of an applied voltage (tuning voltage) corresponding to each channel from, for example, the first memory 13 or the second memory 22, and converts the data into an analog signal (voltage conversion) by a D / A converter (not shown). ) To give the variable capacitance diode.
[0017]
The terrestrial digital tuner 2 extracts a signal of a specific frequency from high-frequency digital modulation signals including video and audio data by the above-described channel selection processing. Further, the terrestrial digital tuner 2 includes a deinterleave circuit, an error correction circuit, a demodulation circuit, and the like, thereby demodulating the selected digital modulation signal and outputting a transport stream.
[0018]
The demultiplexer (DEMUX) 6 converts the transport stream received from the terrestrial digital tuner 2 into a video stream of MPEG2 (Moving Picture Experts Group2), an audio stream, and PSI / SI (Program Specific Information / Service). Decrypt. The demultiplexer 6 supplies the video stream and the audio stream to the AV decoder 7, and supplies the service information included in the PSI / SI to the main CPU 18. As described above, a plurality of channels are multiplexed in the transport stream, and a process for selecting an arbitrary channel from among the channels is performed by selecting an arbitrary channel from the PSI / SI in the transport stream. It becomes possible by extracting data such as which packet ID is multiplexed.
[0019]
The AV decoder 7 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 8, and the audio data is output to the audio processing circuit 9.
[0020]
The video processing circuit 8 receives the video data from the AV decoder 7 and performs D / A conversion to generate a video signal. The audio processing circuit 9 receives the audio data output from the AV decoder 7, performs D / A conversion, and generates an analog audio signal.
[0021]
The video / audio processing unit 5 demodulates the received signal supplied from the terrestrial analog tuner 4 to generate a video signal and an audio signal.
[0022]
The OSD (on-screen display) circuit 15 outputs a video signal based on the bitmap data of the character information specified by the main CPU 18 to the adder 16 or 17. The adders 16 and 17 incorporate a video signal based on the bitmap data into a received video signal, and supply the video signal to the drive circuit 10. The OSD circuit 15 can display a menu screen, various setting screens, and the like.
[0023]
The picture tube 11 performs video display by using video signals (R, G, B signals and vertical / horizontal synchronization signals) supplied from the drive circuit 10. Further, the speaker 12 inputs a voice signal and outputs a voice.
[0024]
The main CPU 18 controls channel selection for the terrestrial digital tuner 2, controls writing / reading of information in the first memory (RAM, ROM, EEPROM, etc.) 13, controls the demultiplexer 6, controls the AV decoder 7, OSD circuit 15 and commands to the sub CPU 21.
[0025]
The remote control transmitter 19 is a transmitter for sending a command to the broadcast receiving device 30. As shown in FIG. 3, the remote control transmitter 19 includes an analog CH conversion key 19a and various keys. When a key provided on the remote control transmitter 19 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 20 receives the signal light, converts the signal light into an electric signal, and supplies the electric signal to the sub CPU 21.
[0026]
The sub CPU 21 receives a remote control signal from the remote control transmitter 19 and a signal from a key operation of an operation unit (not shown) to notify the main CPU 18, execute a command from the main CPU 18, and process the terrestrial analog tuner 4. In addition to performing channel selection control and the like, it also performs station / non-station determination processing for analog terrestrial broadcasting. The station / non-station determination processing can be performed based on, for example, whether or not a horizontal synchronization signal is included in a video signal after detection in a reception channel at a certain value or more.
[0027]
The ROM (not shown) stores a position-channel setting table associated with the area code. For example, it is configured such that the area number can be input on the channel change setting screen in the menu screen using the OSD circuit 15, and by inputting the area number on this screen, the correspondence table is selected. The channel is automatically set for each position. In addition, individual setting for setting a desired channel at a desired position can be performed on a channel change setting screen in the menu screen. The individual setting information in the analog broadcast is stored in the second memory (EEPROM or the like) 22 by the processing of the sub CPU 21. Further, the sub CPU 21 searches for a channel associated with each of the positions and a channel not associated with the position, makes a determination as to whether the station is stationed or not, and stores the result in the second memory 22.
[0028]
By operating the analog CH conversion key 19a in addition to the channel change setting screen in the menu screen, the channel change setting screen is directly displayed, and the individual change setting of the channel can be performed on this channel change setting screen. I have. The channel change setting screen includes, for example, as shown in FIG. 4, a position number display (CH button), a display of preset channels (channels associated with positions), a display of receivable channels, and a display outside of the setting (position (A channel that is not associated), and is displayed over the received video. The black triangle mark on this screen indicates the cursor position currently being set, and corresponds to a channel display (in this embodiment, a cross mark is displayed) in which a channel is localized in the receivable channel item field. It is displayed at the location. The display of "-" indicates that the channel is not preset at the position.
[0029]
As shown in the flowchart of FIG. 2, when the broadcast receiving device 30 detects that the analog CH conversion key 19a provided on the remote control transmitter 19 has been pressed (YES in step S1), the broadcast receiving device 30 determines the channel associated with the position button. A process for detecting the presence / absence of a signal (station / non-station) is performed (step S2). Further, a process of detecting the presence / absence of a signal (station / non-station) for a channel not associated with the position button is performed (step S3). Then, the channel change setting screen shown in FIG. 4 is displayed on the OSD based on the processing result (step S4). In this screen display state, the receiving channel can be set.
[0030]
When the broadcast receiving apparatus 30 detects that the ↑ / ↓ key is pressed (YES in step S5), the broadcast receiver 30 displays the next unlocalized channel on the channel change setting screen as shown in FIGS. Is moved to the display position (step S6). When the press of the CH +/- key is detected (YES in step S7), as shown in FIGS. 6A, 6B, and 6C, the number in the non-set station channel list is set to the delocalized channel on the cursor. Column (Step S8). The broadcast receiving device 30 performs a receiving process on the channel of the number displayed in the unlocalized channel column, and displays a channel change setting screen over the received video.
[0031]
When the user finds a set channel (destination channel) by the above operation, the user presses the enter key. When the broadcast receiving device 30 detects that the enter key has been pressed (YES in step S9), it sets the channel of the number displayed in the unlocalized channel column on the cursor to the position button (CH button) (step S9). . When the channel of the above number is set to the position button, as shown in FIG. 6D, the display of the number in the non-set station channel list is deleted.
[0032]
When there are a plurality of unlocalized channels, for example, when the enter key is pressed, the cursor is moved to the display position of the next non-localized channel (in the example shown in FIG. 4, the CH button "5"). The cursor may be automatically moved to the display position of the unlocalized channel corresponding to (1). If the user knows the transfer destination channel in a newspaper or the like, the channel change setting may be performed by directly inputting the channel number using the numeric keypad of the remote control transmitter 19, for example.
[0033]
Further, in the above-described embodiment, although the channel that maintains the station state is described on the channel change setting screen, only the unlocalized channel may be described. For example, in the example of FIG. 4, only the information corresponding to the CH buttons “1” and “5” may be displayed. In addition, in the non-set station channel list, the channel associated with the position number is included, and the channel associated with the position number is distinguished from the channel not associated with the position number (for example, color-coded). ) May be displayed. When the channel change setting screen cannot be contained in one screen, a button such as “next screen” may be displayed on the screen, and the button operation may advance to the next channel change setting screen.
[0034]
In the above-described embodiment, the channel change setting screen is displayed when the analog CH conversion key 19a provided on the remote control transmitter 19 is operated. You may comprise so that a change setting screen may be displayed. Alternatively, a channel change setting screen may be displayed by using an existing key in the remote control transmitter 19 or the receiving device body and pressing the corresponding key for a long time, for example, for three seconds. Also, depending on the time zone, there is a possibility that the radio wave is stopped. In this case, there is a possibility that it may be determined that the station is stationed even if it is stationed. A response such as not performing the channel change setting process may be performed.
[0035]
【The invention's effect】
As described above, according to the present invention, even when the channel of the terrestrial analog broadcast is changed with the introduction of the terrestrial digital broadcast, the channel change processing on the broadcast receiving device corresponding to the change can be easily performed. This has the effect.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a digital / analog broadcast receiving apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a channel change process.
FIG. 3 is an explanatory diagram showing an example of a remote control transmitter.
FIG. 4 is an explanatory diagram showing an example of a channel change setting screen.
FIGS. 5A and 5B are explanatory diagrams showing examples of cursor movement on a channel change setting screen.
FIGS. 6 (a), (b), (c), and (d) are explanatory diagrams showing transitions of display contents on a channel change setting screen.
[Explanation of symbols]
Reference Signs List 1 antenna 2 terrestrial digital tuner 4 terrestrial analog tuner 5 analog video / audio processing unit 6 demultiplexer (DEMUX)
7 AV decoder 15 OSD circuit 16 Adder 17 Adder 18 Main CPU
19 Remote control transmitter 19a Analog CH conversion key 21 Sub CPU
22 Second memory

Claims (7)

A tuner for receiving at least an analog broadcast, storage control means for storing correspondence information between a channel number and a position number, and correspondence with a notation based on the correspondence information and the position number when a specific key is operated by a user Of the channel change setting screen including the notation indicating the channel determined to be unlocalized among the channels being set and the notation indicating the channel list determined to be stationed by the unassociated channel. A broadcast receiving apparatus comprising: a unit for performing a channel change setting based on information input on the channel change setting screen. 2. The broadcast receiving apparatus according to claim 1, wherein a cursor indicating a currently set channel is displayed on the channel change setting screen, and the cursor corresponds to a channel determined to be stationless according to a predetermined operation of a user. A broadcast receiving apparatus configured to be displayed at a specified position. A tuner for receiving at least an analog broadcast, storage control means for storing correspondence information between a channel number and a position number, and a non-selected channel among the channels associated with the position number when a specific key is operated by a user. Means for displaying a channel change setting screen including a notation indicating a channel determined to be localized and a notation indicating a channel list determined to be channelized in an unassociated channel, and the channel change setting Means for making channel change settings based on information input on the screen. 4. The broadcast receiving apparatus according to claim 1, wherein a number on the channel list determined to be stationed is selected according to a predetermined selection operation by a user, and the number is made unstationary. A broadcast receiving apparatus configured to perform channel setting through a process of displaying on a notation indicating a channel determined to have been performed. 4. The broadcast receiving apparatus according to claim 1, wherein the channel setting is performed through a process of displaying an input number by a user's ten-key operation on a notation indicating the channel determined to have been localized. A broadcast receiving apparatus, wherein 6. The broadcast receiving apparatus according to claim 4, wherein when a channel is set through the processing, a display of a corresponding number is deleted from a channel list determined to be a station. A broadcast receiving apparatus characterized by being configured as described above. 7. The broadcast receiving apparatus according to claim 1, wherein the channel list determined to be stationed includes a channel associated with a position number and is associated with a position number. A broadcast receiving apparatus for displaying a channel so as to be distinguished from a channel not associated with the channel.

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