JP4802298B2 - Broadcast receiver - Google Patents

Description

The present invention relates to a power saving technique in a broadcast receiving apparatus having a plurality of tuners.

  As is well known, in recent years, digitalization of television broadcasting has been promoted. For example, in Japan, not only satellite digital broadcasting such as BS (broadcasting satellite) digital broadcasting and 110-degree CS (communication satellite) digital broadcasting but also terrestrial digital broadcasting has been started.

  Digital television broadcast receivers are also available with models equipped with multiple digital broadcast tuners. Such a digital television broadcast receiver is highly functional, such as recording a back program while displaying a viewing program. As the number of digital broadcast tuners installed in a digital television broadcast receiver increases, the number of programs that can be recorded simultaneously with viewing increases.

  In Patent Document 1, when a program is reserved and a reserved program is recorded, the signal processing circuit detects a power-on signal from the television receiver, and a power circuit is connected to a control unit that controls each unit based on this signal. Discloses a configuration of a recording / reproducing apparatus that supplies power.

JP 2004-349790 A

  However, the television receiver described in Patent Document 1 has only one tuner. When the television receiver has a plurality of tuners, it is not a good idea from the viewpoints of power consumption, component life, etc., if an unnecessary tuner is always turned on. That is, if the user simply views the program, only the viewing tuner needs to be activated. When a user wants to watch a program and record a plurality of back programs, it is necessary to operate other tuners in addition to the viewing tuner. Patent Document 1 does not disclose a configuration in which the function of each unit is switched on / off in accordance with a user's application in a television receiver including a plurality of tuners.

  Accordingly, an object of the present invention is to provide a broadcast receiving apparatus that switches on / off of individual functions according to necessity.

The broadcast receiving apparatus according to the present invention includes a first receiving means for receiving a broadcast signal of an input channel, a plurality of second receiving means for receiving broadcast signals of respective set channels, and the plurality of second receiving means. Control means for stopping the operation of one or more of the two receiving means and switching to a mode for recording control based on the broadcast signal received by the rest of the plurality of second receiving means; When the number of channels to be obtained is smaller than the number of the plurality of second receiving means, the channel to be selected is set in the plurality of second receiving means, and among the plurality of second receiving means, Means for stopping the operation of the channel for which channel selection is not set, and when the number of channels to be selected at the time of setting is equal to or greater than the number of the plurality of second receiving means, And a setting means for setting a channel for which the tuning into a plurality of second receiving means in ascending order of channel number.

  According to the above-described invention, since individual functions are switched on / off according to necessity, it is possible to provide a broadcast receiving apparatus that reduces power consumption.

The block diagram which shows schematic structure of the digital television broadcast receiver which concerns on this embodiment. The external view of the remote controller used for the digital television broadcast receiver which concerns on this embodiment. The screen figure which sets the function of the digital television broadcast receiver which concerns on this embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a digital television broadcast receiving apparatus 100 according to the present embodiment. That is, the satellite digital television broadcast signal received by the BS / CS digital broadcast receiving antenna 47 is supplied to the satellite digital broadcast tuner 49 via the input terminal 48. The satellite digital broadcast tuner 49 selects a broadcast signal of a desired channel.

  The broadcast signal selected by the satellite digital broadcast tuner 49 is supplied to a PSK (phase shift keying) demodulation module 50, demodulated into a digital video signal and audio signal, and then output to the signal processing module 51. The

  The terrestrial digital television broadcast signal received by the terrestrial broadcast receiving antenna 52 is supplied to the viewing terrestrial digital broadcast tuner 54 via the input terminal 53. The viewing terrestrial digital broadcast tuner 54 selects a broadcast signal of a desired channel. The broadcast signal selected by the viewing terrestrial digital broadcast tuner 54 is supplied to an OFDM (orthogonal frequency division multiplexing) demodulation module 55, demodulated into a digital video signal and audio signal, and then sent to the signal processing module 51. Is output.

  The broadcast signal selected by the first recording terrestrial digital broadcast tuner 56 is supplied to the OFDM demodulation module 57, demodulated into a digital video signal and audio signal, and then output to the high function control module 30. . Similarly, the broadcast signal selected by the second digital terrestrial broadcasting tuner 58 for recording is supplied to the OFDM demodulation module 59, demodulated into a digital video signal and audio signal, and then sent to the high function control module 30. Is output. The broadcast signal selected by the third recording terrestrial digital broadcast tuner 58 is supplied to the OFDM demodulation module 60, demodulated into a digital video signal and audio signal, and then output to the high function control module 30. .

  The digital television broadcast receiving apparatus 100 includes a viewing terrestrial digital broadcast tuner 54, a first recording terrestrial digital broadcast tuner 56, a second recording terrestrial digital broadcast tuner 58, and a third recording terrestrial digital broadcast. By providing the tuner 58, it is possible to simultaneously select a maximum of four channels of terrestrial digital broadcast signals. In the present embodiment, the case where the digital television broadcast receiving apparatus 100 includes four terrestrial digital broadcast tuners will be described. However, the configuration may include three or less terrestrial digital tuners or five or more terrestrial digital broadcast tuners.

  The signal processing module 51 selectively performs predetermined digital signal processing on the digital video signal and audio signal supplied from the PSK demodulation module 50 and the OFDM demodulation module 55, respectively. Output to module 63.

  The signal processing module 51 is connected to a plurality (four in the illustrated case) of input terminals 64a, 64b, 64c, and 64d. These input terminals 64a to 64d are capable of inputting analog video signals and audio signals from the outside of the digital television broadcast receiver 100, respectively.

  The signal processing module 51 selectively digitizes analog video signals and audio signals respectively supplied from the input terminals 64a to 64d, and performs predetermined digital signal processing on the digitized video signals and audio signals. Are applied to the graphic processing module 62 and the audio processing module 63.

  Among these, the graphic processing module 62 has a function of superposing and outputting the OSD signal generated by the OSD (on screen display) signal generation module 65 on the digital video signal supplied from the signal processing module 51. The graphic processing module 62 selectively outputs the output video signal of the signal processing module 51 and the output OSD signal of the OSD signal generation module 65, and combines both outputs so as to constitute half of the screen. Can be output.

  The digital video signal output from the graphic processing module 62 is supplied to the video processing module 66. The video signal processed by the video processing module 66 is supplied to the video display 14 and also to the output terminal 67. The video display 14 displays video based on the video signal, and when an external device is connected to the output terminal 67, the video signal supplied to the output terminal 67 is input to the external device.

  The audio processing module 63 converts the input digital audio signal into an analog audio signal in a format that can be reproduced by the speaker 15 and then outputs the analog audio signal to the speaker 15 for audio reproduction. Through the outside.

  Here, in the digital television receiver 100, all the operations including the above-described various reception operations are comprehensively controlled by the control module 69. The control module 69 has a CPU (central processing unit) and the like, and receives operation information from the operation module 16 or operation information sent from the remote controller 17 and received via the light receiving module 18. Each module is controlled so that the operation content is reflected. As shown in FIG. 2, the remote controller 17 has a cursor key (cross key) 17a, an enter key 17b, and a channel selection key 17c.

  The control module 69 mainly includes a ROM (read only memory) 70 that stores a control program executed by the CPU, a RAM (random access memory) 71 that provides a work area for the CPU, and various setting information and control information. Etc. are used.

  The control module 69 is connected to the LAN terminal 24 via the communication I / F 80. Thereby, the control module 69 can acquire information from a network such as the Internet via the communication I / F 80.

  As with the signal processing module 51, the high-function control module 30 selectively selects predetermined video signals and audio signals supplied from the OFDM demodulation module 57, the OFDM demodulation module 59, and the OFDM demodulation module 61, respectively. Apply digital signal processing.

  The high function control module 30 is connected to a first built-in HDD (hard disk drive) 90, a second built-in HDD 91, and a third built-in HDD 92. The first built-in HDD 90, the second built-in HDD 91, and the third built-in HDD 92 record video signals and audio signals. In this embodiment, the case where the digital television broadcast receiving apparatus 100 includes three built-in HDDs will be described. However, the configuration may include two or less built-in HDDs or four or more built-in HDDs.

  The high-function control module 30 includes a first recording terrestrial digital broadcast tuner 56, an OFDM demodulation module 57, a second recording terrestrial digital broadcast tuner 58, an OFDM demodulation module 59, a third recording terrestrial digital broadcast tuner 60, The power supply of each of the OFDM demodulating module 61, the first internal HDD 90, the second internal HDD 91, and the third internal HDD 92 is controlled. The control module 69 controls the power on / off of the high function control module 30.

  In the present embodiment, the viewing terrestrial digital broadcast tuner 54 selects a broadcast signal by switching to a corresponding channel when the user selects a channel to view using the channel selection key 17 c of the remote controller 17. The video display 14 displays the video of the program based on the broadcast signal.

  The first recording terrestrial digital broadcast tuner 56, the second recording terrestrial digital broadcast tuner 58, and the third recording terrestrial digital broadcast tuner 60, for example, always select the broadcast signals of the following broadcast station channels. To do.

  The first recording terrestrial digital broadcast tuner 56 always selects the broadcast signal of the channel of the broadcast station A. The second digital terrestrial broadcasting tuner 58 for recording always selects the broadcast signal of the channel of the broadcasting station B. The third terrestrial digital broadcast tuner 60 for recording always selects the broadcast signal of the channel of the broadcast station C.

  When the initial setting of the digital television broadcast receiving apparatus 100 is input from the remote controller 17, the high function control module 30 receives the first terrestrial digital broadcast tuner 56 for recording, the second terrestrial digital broadcast tuner 58 for recording, 3, the channel of the broadcast signal to be selected by the recording terrestrial digital broadcast tuner 60 is set. For example, in the area where the digital television broadcast receiving apparatus 100 is used, when the number of channels to be selected is larger than the number of recording terrestrial digital broadcast tuners provided in the digital television broadcast receiving apparatus 100, a high function The control module 30 selects broadcast signal channels selected by the first recording terrestrial digital broadcast tuner 56, the second recording terrestrial digital broadcast tuner 58, and the third recording terrestrial digital broadcast tuner 60 in ascending order of channel numbers. Should be set.

  In addition to this, the user uses the remote controller 17 to relate the channel to the first terrestrial digital broadcast tuner 56 for recording, the second terrestrial digital broadcast tuner 58 for recording, and the third terrestrial digital broadcast tuner 60 for recording. Can be set. The high function control module 30 has a frequency of viewing each broadcast signal selected by the first terrestrial digital broadcast tuner 56 for recording, the second terrestrial digital broadcast tuner 58 for recording, and the third terrestrial digital broadcast tuner 60 for recording. You may make it change and set suitably for every predetermined period in order of a high channel.

  Here, the first built-in HDD 90 records a video signal and an audio signal based on the broadcast signal selected by the first digital terrestrial broadcasting tuner 56 for recording. Similarly, the second built-in HDD 91 records a video signal and an audio signal based on the broadcast signal selected by the second recording terrestrial digital broadcast tuner 58. The third built-in HDD 92 records a video signal and an audio signal based on the broadcast signal selected by the third terrestrial digital broadcast tuner 60 for recording.

  In the present embodiment, the first built-in HDD 90 and the first terrestrial digital broadcast tuner for recording 56 are associated one-to-one. In addition to this, the first built-in HDD 90 generates a broadcast signal selected by the first recording terrestrial digital broadcast tuner 56, the second recording terrestrial digital broadcast tuner 58, and the third recording terrestrial digital broadcast tuner 60. You may make it record all the video signals and audio | voice signals based on it.

  The first built-in HDD 90 is predetermined to record a video signal and an audio signal based on a broadcast signal of a channel selected by the first digital terrestrial broadcasting tuner 56 for recording. The same applies to the second internal HDD 91 and the third internal HDD 92. In addition, the user can use the remote controller 17 to use the first built-in HDD 90, the second built-in HDD 91, the third built-in HDD 92, the first terrestrial digital broadcast tuner 56, and the second record terrestrial broadcasting. The relationship between the digital broadcast tuner 58 and the third terrestrial digital broadcast tuner 60 for recording can be set. The control module 69 may assign and set the first built-in HDD 90, the second built-in HDD 91, and the third built-in HDD 92 for each channel.

  Basically, the first built-in HDD 90 continues to record the program of the channel of the broadcasting station A unless it receives power control described later. Similarly, the second built-in HDD 91 continues to record the program of the broadcast station B channel. The third built-in HDD 92 continues to record programs on the channel of the broadcasting station C.

  FIG. 3 is a setting screen for setting a function on / off control target by the high function control module 30. The control module 69 controls display of the screen shown in FIG. 3 on the video display 14 based on the input from the remote controller 17. FIG. 3 is an example, and the function to be controlled on / off is not limited to this.

  The user can set on / off for each function using the cursor key 17a and the enter key 17b on the setting screen. The functions to be controlled on / off include a multi-channel simultaneous automatic recording and playback function, a multi-channel simultaneous viewing function, a user reservation recording and playback function, a high image quality function, an IPTV function, and a browser function.

  As described above, the multi-channel simultaneous automatic recording function includes the first recording terrestrial digital broadcast tuner 56, the second recording terrestrial digital broadcast tuner 58, the third recording function set by the high function control module 30 at the time of initial setting. This is a function for continuously recording video signals and audio signals in the first built-in HDD 90, the second built-in HDD 91, and the third built-in HDD 92 for all broadcast signal channels selected by the recording terrestrial digital broadcast tuner 60. Similarly, the multi-channel simultaneous automatic reproduction function is a function that reads a video signal and an audio signal from the first built-in HDD 90, the second built-in HDD 91, and the third built-in HDD 92 and can reproduce them simultaneously.

  When this function is on, the high function control module 30 corresponds to the first recording terrestrial digital broadcast tuner 56, the corresponding OFDM demodulation module 57 and the first built-in HDD 90, the second recording terrestrial digital broadcast tuner 58, and the like. The OFDM demodulating module 59 and the second built-in HDD 91, the third terrestrial digital broadcast tuner 60 for recording, the corresponding OFDM demodulating module 61 and the third built-in HDD 92 are powered on.

  On the other hand, when this function is off, the high function control module 30 includes the first recording terrestrial digital broadcast tuner 56, the corresponding OFDM demodulation module 57, the first built-in HDD 90, and the second recording terrestrial digital broadcast tuner 58. The corresponding OFDM demodulation module 59 and the second built-in HDD 91, the third recording terrestrial digital broadcast tuner 60, the corresponding OFDM demodulation module 61 and the third built-in HDD 92 are turned off.

  If this function is on, the user can set recording for a channel to be selected without performing a complicated operation.

  The multi-channel simultaneous viewing function is performed on a first recording terrestrial digital broadcasting tuner 56, a second recording terrestrial digital broadcasting tuner 58, and a third recording terrestrial digital broadcasting tuner 60 on an EPG (electronic program guide) screen. This is a function for displaying video based on a selected broadcast signal for each channel together with program information. In addition to the EPG screen, the video display 14 may be divided into multiple screens to display a plurality of channels of video.

  The power on / off control of the high function control module 30 when the function is on and off is the same as when the multi-channel simultaneous automatic recording and playback function is on and off, respectively. The built-in HDDs 90, 91, 92 can be turned off.

  The reserved recording function by user reservation is selected by the user using the remote controller 17 with the first terrestrial digital broadcast tuner 56 for recording, the second terrestrial digital broadcast tuner 58 for recording, and the third terrestrial digital broadcast tuner 60 for recording. This function sets the channel of the broadcast signal to be broadcast. Similarly, the reserved recording / playback function based on user reservation is performed by the video signal and the audio signal from the built-in HDD that is recording the video signal and the audio signal among the first built-in HDD 90, the second built-in HDD 91, and the third built-in HDD 92. Is a function for reading out and reproducing.

  Therefore, the user does not set the channel of the broadcast signal to be selected for the first recording terrestrial digital broadcast tuner 56, the second recording terrestrial digital broadcast tuner 58, and the third recording terrestrial digital broadcast tuner 60. It can also be done.

  When this function is on, the high function control module 30 sets the first terrestrial digital broadcast tuner for recording when the user sets the channel so that the first recording terrestrial digital broadcast tuner 56 selects a broadcast signal. 56, the corresponding OFDM demodulation module 57 and the first built-in HDD 90 are powered on. Further, when the user does not set the channel to select the broadcast signal to the second digital terrestrial broadcasting tuner 58 for recording, the high function control module 30 corresponds to the second digital terrestrial broadcasting tuner 58 for recording. The power of the OFDM demodulating module 59 and the second built-in HDD 91 is turned off.

  On the other hand, when this function is off, the advanced function control module 30 sets the channel accordingly if the multi-channel simultaneous automatic recording and playback function is on. The high-function control module 30 is not initialized if the multi-channel simultaneous automatic recording and playback function is off, so the first digital terrestrial broadcasting tuner 56 for recording, the corresponding OFDM demodulation module 57 and the first built-in HDD 90, second recording terrestrial digital broadcast tuner 58, corresponding OFDM demodulation module 59 and second built-in HDD 91, third recording terrestrial digital broadcast tuner 60, corresponding OFDM demodulation module 61, and third built-in HDD 92 Turn everything off.

  The user does not need to set, for example, the first recording terrestrial digital broadcast tuner 56 for the recording-unnecessary channels among the channels to be selected. Accordingly, the unnecessary first digital terrestrial broadcasting tuner for recording 56, the corresponding OFDM demodulation module 57, and the first built-in HDD 90 are turned off.

  It should be noted that the number of tuners and demodulators to be assigned to the multi-channel simultaneous automatic recording and playback function or multi-channel simultaneous viewing function and the reserved recording and playback function by user reservation can be freely selected.

  The image quality improving function is a function for improving the image quality of a video signal to be recorded. When this function is on, the high function control module 30 performs a process of improving the image quality of the video signal recorded or reproduced in the first internal HDD 90, the second internal HDD 91, and the third internal HDD 92. Further, the high function control module 30 controls the signal processing module 51 so as to process the image quality of the video signal displayed on the video display 14 to be high.

  When this function is off, the high function control module 30 normally processes the image quality of the video signal recorded or reproduced on the first internal HDD 90, the second internal HDD 91, and the third internal HDD 92. Further, the high function control module 30 also applies to the video signal displayed on the video display 14.

  The IPTV (internet protocol television) function is a function for displaying IPTV on the video display 14 via the communication I / F 80. When this function is on, the high function control module 30 controls the display of the IPTV according to the input by the user using the remote controller 17. When this function is off, the high function control module 30 sets the IPTV to a view-disabled state.

  The browser function is a function for displaying an Internet screen on the video display 14 via the communication I / F 80, for example. When this function is on, the high function control module 30 controls the display of the Internet screen according to the input by the user using the remote controller 17. When this function is off, the high function control module 30 sets the Internet screen to a display disabled state.

  As described above, the user can select a mode in which all functions are activated and a mode in which at least one function is stopped depending on the application. In the digital television broadcast receiving apparatus 100, each part constituting the operation of unnecessary functions is turned off. Therefore, power saving in the digital television broadcast receiver 100 can be achieved.

  When the user sets all the functions described above as unnecessary, the control module 69 also turns off the high function control module 30 itself. For example, this is a case where the user only wants to watch.

  In this case, the control module 69 and the high function control module 30 operate as follows. When the high-function control module 30 is powered off, the control module 69 controls the signal lines from the OFDM demodulation modules 57, 59, 61 to be fixed low to prevent current leakage.

  When the high function control module 30 is powered off, the control module 69 also fixes the clock signal supplied to the high function control module 30 to low.

  When the control module 69 turns off the high function control module 30, the signal processing module 51 and the control module 69 do not use the input signal from the high function control module 30.

  When the high-function control module 30 is powered off by the control module 69, the first recording terrestrial digital broadcast tuner 56, the corresponding OFDM demodulation module 57 and the first built-in HDD 90, the second recording terrestrial digital broadcast tuner 58, The OFDM demodulating module 59 and the second built-in HDD 91, the third terrestrial digital broadcast tuner 60 for recording, and the corresponding OFDM demodulating module 61 and the third built-in HDD 92 are powered off or sleep in conjunction with the high function control module 30. It becomes a state.

  Next, another example of the initial setting of the digital television broadcast receiving apparatus 100 will be described. Here, it is assumed that the number of channels to be selected is smaller than the number of recording terrestrial digital broadcast tuners provided in the digital television broadcast receiving apparatus 100 in an area where the digital television broadcast receiving apparatus 100 is used. The digital television broadcast receiving apparatus 100 can receive the broadcast signal of the channel of the broadcast station A and the broadcast signal of the channel of the broadcast station B, but cannot receive the broadcast signal of the channel of the broadcast station C.

  The high-function control module 30 sets the channel of the broadcast signal to be selected by the first recording terrestrial digital broadcast tuner 56 and the second recording terrestrial digital broadcast tuner 58 when the digital television broadcast receiver 100 is initially set. To do. Since the third terrestrial digital broadcasting tuner 60 for recording has no broadcast signal to select, the high function control module 30 includes the third terrestrial digital broadcasting tuner 60 for recording, the corresponding OFDM demodulation module 61, and the third built-in HDD 92. Turn off the power. Therefore, the user does not need to turn off the power for the terrestrial digital broadcasting tuner for recording which is unnecessary in the initial setting.

  In the present embodiment, the high function control module 30 records the video signal and the audio signal in the first internal HDD 90, the second internal HDD 91, and the third internal HDD 92, but the HDMI terminal, the USB terminal, i. The same applies to an HDD of an external device connected to various terminals such as a Link terminal. The high function control module 30 may transmit a signal for setting on / off of the sleep state to the HDD of the external device.

  Although this embodiment demonstrated that it was applicable to the digital television broadcast receiver 100 shown in FIG. 1, it is not restricted to this. The present embodiment can also be applied to a set top box type in which at least the video display 14 and the speaker 15 are removed from the configuration shown in FIG.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by variously modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements according to different embodiments may be appropriately combined.

  DESCRIPTION OF SYMBOLS 14 ... Video display device, 17 ... Remote controller, 30 ... High functional control module, 54 ... Terrestrial digital broadcast tuner for viewing, 56 ... First digital terrestrial broadcast tuner for recording, 58 ... Second digital terrestrial broadcast tuner for recording , 60 ... third digital terrestrial broadcast tuner for recording, 69 ... control module, 90 ... first built-in HDD, 91 ... second built-in HDD, 92 ... third built-in HDD, 100 ... digital television broadcast receiver .

Claims (6)

First receiving means for receiving a broadcast signal of the input channel;
A plurality of second receiving means for receiving broadcast signals of respective set channels;
Control switching to makes the chromophore at the distal end over de to the recording control on the basis of the broadcast signal received by the others of the plurality of second receiving means to stop controlling one or more operations of the previous SL plurality of second receiving means Means,
Number less no case than the number of channels to be channel selection target setting said plurality of second receiving means, to set the channel for which the channel selection target to the plurality of second receiving means, said plurality of Means for stopping the operation of the second receiving means for which the channel to be selected is not set;
When the number of channels to be selected at the time of setting is equal to or greater than the number of the plurality of second receiving means, the channels to be selected are set in the order of increasing channel numbers in the plurality of second receiving means. Setting means;
A broadcast receiving apparatus. 2. The broadcast receiving according to claim 1, wherein the control unit controls the operation of the corresponding one of the plurality of second receiving units based on an input of a stop command to any one of the plurality of second receiving units. apparatus. 2. The broadcast receiving apparatus according to claim 1, wherein the control means sets a channel of a broadcast signal received by the plurality of second receiving means based on channel setting input to the plurality of second receiving means. The broadcast receiving apparatus according to claim 1, further comprising recording means for recording video based on broadcast signals received by the plurality of second receiving means. The broadcast receiving apparatus according to claim 4, wherein the control unit also controls to stop the operation of the recording unit that is associated with one of the plurality of second receiving units whose operation is controlled to be stopped. Receiving the broadcast signal of the channel input by the first receiving means;
Switch to makes the chromophore at the distal end over de to the recording control on the basis of the broadcast signal received by the others of the plurality of second receiving means to stop controlling one or more operations of the second receiving means of multiple,
Number less no case than the number of channels to be channel selection target setting said plurality of second receiving means, to set the channel for which the channel selection target to the plurality of second receiving means, said plurality of The second receiving means is controlled to stop the operation of the channel to be selected is not set,
When the number of channels to be selected at the time of setting is equal to or greater than the number of the plurality of second receiving means, the channels to be selected are set in the order of increasing channel numbers in the plurality of second receiving means. ,
Recording control method.

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