JP5177020B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus.

  Digital television broadcast signals include video and audio data, as well as programs called SI (Service Information: Program Sequence Information) defined in the ARIB (Association of Radio Industries and Businesses) standard. Information is multiplexed. The program information includes various information such as a program name, broadcast date and time, and program overview, and is provided to the user as an EPG (Electronic Program Guide) in the broadcast receiving apparatus. Using the EPG, the user can efficiently select a viewing program from among multiple channels, search for a program, make a viewing reservation, make a recording reservation, and the like.

Such program information is periodically added to the broadcast signal transmitted by each broadcasting station and transmitted. However, depending on the transmission period of program information and the timing of acquiring program information, it takes time to acquire program information, and the user There is a possibility that the EPG cannot be presented immediately when the EPG requests to display the EPG.
In particular, in digital terrestrial television broadcasting, each station uses an SI system in which each broadcast station multiplexes only its own program information (SI) into a broadcast signal. Therefore, when a broadcast receiving apparatus acquires program information. The broadcast channel must be selected in turn by the tuner, and the program information (SI) of each station must be acquired individually for each broadcast channel, and it takes more time to display the EPG after receiving the EPG display request. Will be required.

  Therefore, a broadcast receiving apparatus that acquires program information in advance and stores it in a storage means is known (see, for example, Patent Document 1). In such a broadcast receiving apparatus, when the user makes an EPG display request, the EPG can be promptly presented based on the program information stored in the storage means in advance.

However, since the program information is extracted from the broadcast signal of the broadcast channel selected by the tuner, the tuner does not operate while the main power of the apparatus is turned off, and the program information cannot be obtained. is there.
In addition, as described above, in digital terrestrial television broadcasting, each broadcast station employs an SI system in which each station multiplexes only its own program information (SI) into a broadcast signal. All broadcast channels must be selected and the program information (SI) of each station must be acquired individually. Therefore, while the viewer is watching the program, the tuner cannot select a broadcast channel of another station and cannot acquire all program information.

Further, in recent years, there are cases where the broadcasting station completely stops the broadcast wave during the program suspension for the purpose of energy saving. While the broadcast wave itself is completely stopped, it is impossible to acquire program information. Therefore, it is necessary to acquire the program information while avoiding the time zone in which the complete stop is performed.
If automatic acquisition of program information is performed at a timing when the acquisition of program information is not possible, power is wasted.

  Therefore, in order to prevent wasteful consumption of power and to acquire program information reliably and efficiently, as a specification of the broadcast receiving device, the viewer is in standby standby not watching the program, and It is preferable that the program information acquisition process is performed at a timing when the broadcast wave is not completely stopped.

  However, the viewing time of the viewer varies depending on the viewer, and the time zone during which the broadcast wave is completely stopped varies depending on the broadcasting station and the day. Therefore, at present, the specification of the broadcast receiving apparatus ensures that the program information is automatically acquired on the assumption that the viewer is not watching the program and the broadcast wave is not completely stopped. In addition, there is a problem that it is difficult to implement efficiently.

  Therefore, avoiding the time period when the user has reserved viewing or recording, the complete stop period of the broadcast signal, and the viewing time period when the user has watched the program in the past, some candidates for the timing of program information acquisition A broadcast receiving apparatus has been proposed that determines a search time, causes a user to select a search time for automatically acquiring program information from these candidates, and automatically acquires program information at the selected search time (for example, Patent Document 2).

JP 2002-142163 A JP 2004-112632 A

  However, in the broadcast receiving apparatus of Citation 2, even if the program information acquisition process is performed avoiding the viewing time zone in the past viewing history, the user may be watching the program during that time zone. Not all program information for all channels can be acquired, and re-acquisition may be necessary. However, in the broadcast receiving apparatus of Patent Document 2, when there is a channel from which program information cannot be acquired, the program information that could not be acquired is not re-acquired, and all program information may not be acquired reliably. There was a problem.

  The subject of this invention is providing the broadcast receiver which can acquire program information more reliably.

In order to solve the above-mentioned problem, the invention described in claim 1
In the broadcast receiving apparatus comprising a receiving means for receiving a digital broadcast signal including turn set information,
Acquisition means for acquiring program information at a predetermined program information acquisition time;
And SL憶means you store information related to a program pause start time and / or program pause end time,
With
The acquisition means, when the program information cannot be acquired, acquires at least the program information at a predetermined time before the program pause start time or within a predetermined time after the program pause end time .
According to a second aspect of the present invention, in the broadcast receiving device according to the first aspect, the storage unit stores the program information acquired by the acquisition unit, and is based on the stored program information. Storing information on the program suspension start time and / or program suspension end time from the reference date to a predetermined number of days before,
The acquisition means calculates the time required to acquire program information of an unacquired channel for which program information could not be acquired, and specifies the earliest program pause start time in the unacquired channel based on the storage means. First program information acquisition processing for acquiring program information of at least the unacquired channel at least at the time before the necessary time from the specified program pause start time, or program information based on the storage means A second program information acquisition process for specifying the latest program pause end time in the unacquired channel that could not be acquired, and acquiring program information of at least the unacquired channel immediately after the identified program pause end time. This is performed when there is an unacquired channel.

Invention according to claim 3, in the broadcast receiving apparatus according to claim 2, before Quito resulting unit, when in the first program information acquisition process is said not acquired channels, the second program information An acquisition process is performed.

The invention described in claim 4 is the broadcast receiving apparatus according to claim 3, wherein the acquisition means, before based on Kiki憶means, the present time of day and / or predetermined criteria of the non-acquired channel A program pause end time that is the latest among the program pause end times from the day before the specified number of days ago is specified, and at least program information of the unacquired channel is acquired immediately after the specified program pause end time . Program information acquisition process, or
Based on prior Kiki憶means, to identify the latest program pause end time in the program pause end time of the day as a predetermined reference to a predetermined number of days ago, immediately after the specified the program pause end time, at least wherein the fourth program information acquisition process for acquiring program information not acquired channels, and wherein the actual Hodokosuru when in said second program information acquisition process is said not acquired channels.

The invention according to claim 5, the broadcast receiving apparatus according to claim 4, before Quito resulting unit, when the program information acquisition process of the third is the non acquisition channel, before Symbol fourth program An information acquisition process is performed.

The invention according to claim 6, the broadcast receiving apparatus according to any one of claims 2-5, before Quito resulting unit, in the first program information acquisition process, the number of the non-acquired channel A time obtained by accumulating a predetermined time required for acquiring program information of one channel is calculated as the necessary time.

The invention according to claim 7, in the broadcast receiving apparatus according to any one of claims 2-6, before Quito resulting unit, in the first program information acquisition process, the earliest in the non-acquired channel from the program pause start time, and the required time, and a predetermined check time required to verify the presence or absence of the updating of the turn set information is possible even program information acquired channel acquisition, the total time duration before the time obtained by adding the The program information of the unacquired channel is acquired and the program information of the acquired channel is updated .

According to the present invention, even if it is not possible to obtain the turn set information in the program information acquisition time stipulated Me pre, at the right time to avoid a turn sets rest period, the reacquisition turn sets information is Thus, program information can be acquired more reliably.

It is a block diagram which shows the principal part structure of the broadcast receiver of this embodiment. It is a figure which illustrates the 1st table. It is a figure which illustrates the 2nd table. It is a flowchart which shows the flow of the program information acquisition process in this embodiment. It is a flowchart which shows the flow of the program information acquisition process in this embodiment.

  Embodiments according to the present invention will be described below with reference to the drawings. The scope of the invention is not limited to the illustrated example.

  The broadcast receiving apparatus 100 of this embodiment is, for example, a television receiver that receives digital terrestrial television broadcast signals. As shown in FIG. 1, a remote controller (hereinafter referred to as “remote controller”) from which a user inputs various instructions. 1) and an apparatus main body 2 remotely operated by the remote controller 1.

The digital broadcast signal transmitted from each broadcast station and received by the broadcast receiving apparatus 100 includes PSI (Program Specific Information) and SI (Service Information) in addition to program content including video data and audio data. : Program information etc.) is multiplexed. In digital terrestrial broadcasting, each station SI system that multiplexes only the program information of its own station is adopted.
The broadcast receiving apparatus 100 of the present embodiment acquires program information (SI) for all broadcast channels from digital broadcast signals transmitted from all receivable broadcast stations, and an EPG (Electronic Program Guide) based on the acquired program information. : An electronic program guide) is created and provided to the user.

The remote controller 1 includes a plurality of buttons for the user to input various instructions to the apparatus main body 2. For example, the remote control 1 includes a power button, a program guide display button, a number button that functions as a one-touch button, an input switching button, a voice switching button, a return button, a cursor button including up / down / left / right buttons, a determination button, a channel up / down Buttons, volume up / down buttons (both not shown) and the like are provided.
Identification information is assigned to each of these buttons in advance and stored in a predetermined storage area. When the button is operated by the user, the identification information of the operated button is read, a remote control signal corresponding to the read identification information is generated, and the generated remote control signal is transmitted to a transmission unit (not shown) Is sent from.

  The apparatus body 2 includes a remote control signal light receiving unit 3, an antenna 4, a tuner 5, a demodulating unit 6, a decoder unit 7, a video processing unit 8, an audio processing unit 9, an OSD circuit 10, a display unit 11, an audio output unit 12, and a control unit. 13 etc.

  The remote control signal light receiving unit 3 includes a photodiode, a SUBCPU, an amplification unit, a demodulation unit, a decoder (all not shown), and the like. When the SUBCPU receives the remote control signal transmitted from the remote controller 1 at the photodiode provided on the front panel of the apparatus body 2, the SUBCPU amplifies the received remote control signal by the amplification unit, demodulates it by the demodulation unit, and shapes the waveform by the decoder. After performing various processing such as error correction, the data is output to the control unit 13. The control unit 13 acquires identification information from the input remote control signal, and determines the operated button based on the acquired identification information.

  The antenna 4 is arranged outdoors in a predetermined direction and receives a high-frequency digital broadcast signal transmitted from the broadcast station side.

The tuner 5 extracts a signal in a specific frequency band from a digital broadcast signal of a high frequency signal input by the antenna 4 or the like as a receiving means in accordance with a channel selection instruction from the control unit 13 and converts it to a low frequency signal. After that, AD conversion or the like is performed and output to the demodulator 6.
In addition, the tuner 5 uses a channel memory as a first acquisition unit, a second acquisition unit, a third acquisition unit, a fourth acquisition unit, and a fifth acquisition unit in accordance with instructions from the control unit 13 in the program information acquisition process described later. All channels stored as receivable channels in 134 are selected, and digital broadcast signals of all channels are received.

  For example, the demodulator 6 performs processing such as digital demodulation and error correction on the signal of the channel selected by the tuner 5 based on the control from the controller 13, and transport stream (TS: Transport Stream). ) And output to the decoder unit 7.

  The decoder unit 7 includes a demultiplexer 71, a video decoder 72, an audio decoder 73, a data decoder 74, and the like.

  The separation unit 71 separates the TS input from the demodulation unit 6 into a plurality of streams such as a video stream, an audio stream, and PSI / SI. Then, necessary TS packets are acquired based on the PSI, and a video stream under the MPEG2 (Moving Picture Experts Group 2) standard is output to the video decoder 72 and an audio stream is output to the audio decoder 73. Further, the separation unit 71 outputs data such as program information (SI) to the data decoder 74.

The video decoder 72 performs various processes such as variable length decoding, inverse quantization, inverse DCT (Discrete Cosine Transform), motion correction and the like on the video stream input from the separation unit 71, thereby converting the video stream into a DTS (Decoding Time). The video data is generated and output to the video processing unit 8.
The audio decoder 73 decodes the audio stream input from the separation unit 71, generates audio data, and outputs the audio data to the audio processing unit 9.

The data decoder 74 decodes the data input from the separation unit 71, acquires necessary information, and supplies it to the control unit 13.
Specifically, the data decoder 74 uses instructions from the control unit 13 as first acquisition means, second acquisition means, third acquisition means, fourth acquisition means, and fifth acquisition means in the program information acquisition processing described later. Accordingly, the program information extracted from the digital broadcast signal received by the tuner 5 is decoded to obtain necessary information, and is supplied to the control unit 13. Program information acquired by the tuner 5 and the data decoder 74 is stored in a program information storage unit 135 described later.

The video processing unit 8 performs various video processing on the video data input from the video decoder 72 to generate a video signal. The generated video signal is temporarily stored in a frame memory (not shown), and then output to the display unit 11 at a reproduction timing according to PTS (Presentation Time Stamp).
The audio processing unit 9 performs various audio processing on the audio data input from the audio decoder 73 to generate an audio signal, and outputs the audio signal to the audio output unit 12 at a reproduction timing according to the PTS.

  The OSD circuit 10 generates OSD display data according to control from the control unit 13, superimposes the generated OSD display data on the video signal output from the video processing unit 8, and displays the OSD display data on the display unit 11. Display.

The display unit 11 includes a display (not shown) such as an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), and an organic EL (Electro Luminescence) display. The display unit 11 receives the video signal input from the video processing unit 8. Display the image based on the display.
The audio output unit 12 includes a speaker (not shown) and the like, amplifies audio based on the audio signal input from the audio processing unit 9, and outputs the amplified audio from the speaker.

  The control unit 13 includes a CPU (Central Processing Unit) 131, a RAM (Random Access Memory) 132, a clock unit 133, a channel memory 134, a program information storage unit 135, a first table 136, a second table 137, and a ROM (Read Only Memory). 138 etc., and each part of the broadcast receiving apparatus 100 is controlled.

  The CPU 131 reads out the processing program stored in the ROM 138 in accordance with the input signal input from each unit, expands and executes the processing program in the RAM 132, and outputs the output signal to each unit of the apparatus main body 2, whereby the broadcast receiving device Control of the entire 100 is performed.

  The RAM 132 includes a program storage area for developing various programs executed by the CPU 131, a data storage area for storing input data and processing results generated when these processing programs are executed, and is used as a work area for the CPU 131. It is done.

  The time measuring unit 133 performs a time measuring process to generate a reference time for the entire broadcast receiving apparatus 100.

  The channel memory 134 is configured by a non-volatile memory, and stores information regarding broadcast channels that can be received by the broadcast receiving apparatus 100 detected by channel scanning in the tuner 5.

  The program information storage unit 135 is configured by a nonvolatile memory, and stores program information acquired by the data decoder 74 as first storage means, and is updated each time new program information is acquired.

  The first table 136 is configured by a nonvolatile memory, stores program information acquisition results in the program information acquisition process for a predetermined number of days, and stores program information stored in the program information storage unit 135 as second storage means. Based on this, information on the program suspension period of each channel up to a predetermined number of days ago (for example, 30 days ago) is stored.

FIG. 2 shows an example of the first table 136.
As shown in FIG. 2, the first table 136 includes, for each channel (physical channel), whether or not program information can be acquired in the program information acquisition process performed 30 days ago, the number of unacquired channels, The channel number is stored in a FIFO (First In, First Out) format.

In addition, the first table 136 stores the program pause start time and the program pause end time of the program pause period for each channel for 30 days based on the program information acquired by the program information acquisition process. In the present embodiment, for example, based on the acquired program information, a time zone without a broadcast program is set as a program pause period, a start time of a time zone without a broadcast program is set as a program pause start time, and an end of a time zone without a broadcast program is set The time is determined as the program pause end time.
For example, in the case where “AM0: 50 to 3:50” is not scheduled to be distributed in “UHF28” on the 23rd day, “AM0: 50 to 3:50” is set as the program pause in the first table 136. As the period, as shown in FIG. 2, the program suspension start time “0:50” and the program suspension end time “3:50” are stored.

  Here, the scheduled EIT of the program information includes information on the programs for the next eight days including the present, and the first table 136 shows the latest program information acquired in the program information acquisition process performed in the past. Based on the update. Therefore, even if the program information can be acquired at least once in the past seven days even for channels (unacquired channels) that cannot be acquired once in the program information acquisition process performed on that day, Based on the information, the presence / absence of a program pause, the program pause start time and the program pause end time can be specified.

Further, in the first table 136 of FIG. 2, the program information with the latest date among the acquired program information is set as the program information on the 30th day, and whether or not the program information of each channel on that day can be acquired is determined on the 30th day. Is stored as information.
In other words, in the present embodiment, “predetermined days” is not a day that is a predetermined number of days after the current day, but is based on the day with the latest date in the acquired program information for at least one channel. It shows the date going back a predetermined number of days.
For example, in the following description, “30 days ago” refers to the date 30 days after the latest date in the acquired program information.

Further, in the present embodiment, a channel for which program information has not been acquired even once in the program information acquisition process for that day is referred to as an “unacquired channel”, and the program information can be acquired even once in the program information acquisition process for that day. Is described as “acquired channel”.
That is, in the program information acquisition process up to the previous day, even if the program information for the current day has already been acquired, if the latest program information cannot be acquired by the program information acquisition process executed on that day, it is set as “unacquired channel”. The

Then, in the first table 136, the acquired channel that can be acquired even once in the program information acquisition process performed on the day is stored as “acquired”, while 1 in the program information acquisition process performed on the day An unacquired channel for which program information has not been acquired has been stored as “not acquired”. The unacquired channel is updated from “unacquired” to “acquired” when the program information can be acquired in the program information acquisition process performed on that day.
Even if the program information cannot be acquired when the program information update process is performed for the acquired channel (that is, the channel for which the program information can be acquired at least once in the program information acquisition process on the day) The channel is not treated as an “unacquired channel”, but remains as an “acquired channel”.

  The second table 137 is configured by a non-volatile memory, and as a second storage unit, based on the program information stored in the program information storage unit 135, in a program suspension period up to a predetermined number of days ago (for example, 30 days ago), The earliest program pause start time and the latest program pause end time, the earliest program pause start time and the latest program pause end time by channel, and the earliest program pause start time and latest program by day of the week The pause end time, the earliest program pause start time and the latest program pause end time for each channel are stored.

FIG. 3 shows an example of the second table 137.
The second table 137 in FIG. 3 is a summary of information on program suspension periods for 30 days stored in the first table 136 for each day of the week / channel.
In FIG. 3, for example, Mondays up to 30 days before and “UHF28”, the earliest program pause start time is “AM0: 50”, and the latest program pause end time is “AM3: 50”.
In FIG. 3, the earliest program pause start time is “AM0: 40” and the latest program pause end time is “AM5: 50” on Mondays up to 30 days ago.
In FIG. 3, the earliest program pause start time is “AM0: 25” and the latest program pause end time is “AM4: 30” in “UHF28” up to 30 days ago.
Furthermore, in FIG. 3, the earliest program pause start time is “AM0: 25” and the latest program pause end time is “AM5: 55” among all channels and all days of the week up to 30 days ago.

  The ROM 138 stores processing programs and data in advance, and stores, for example, a first acquisition program 138a, a second acquisition program 138b, a third acquisition program 138c, a fourth acquisition program 138d, a fifth acquisition program 138e, and the like. ing.

The first acquisition program 138a is a program for causing the CPU 131 to realize a function of executing a program information acquisition process at a predetermined program information acquisition time.
In the present embodiment, the first acquisition program 138a, the CPU 131, the tuner 5, and the data decoder 74 constitute a first acquisition unit.

When there is an unacquired channel in which program information could not be acquired in the program information acquisition process by execution of the first acquisition program 138a, the second acquisition program 138b has 1 channel of program information in the number of unacquired channels. The time obtained by integrating the predetermined time required for the acquisition process is calculated as the necessary time required for acquiring the program information of the unacquired channel. Further, the earliest program pause start time in the unacquired channel is identified based on the first table 136, and the required time and the program information can be obtained in the program information acquisition process from the identified program pause start time. A predetermined confirmation time required for confirming whether or not the program information of the already acquired channel is updated, and a time before the total time, the program information acquiring process for the unacquired channel, the program information updating process for the acquired channel, It is a program for realizing the function to implement.
In the present embodiment, the second acquisition program 138b, the CPU 131, the tuner 5, and the data decoder 74 constitute a second acquisition unit.

When there is an unacquired channel in the program information acquisition process by the execution of the second acquisition program 138b, the third acquisition program 138c determines the latest program pause end time in the unacquired channel based on the first table 136. This is a program for realizing the function of performing the program information acquisition process for the unacquired channel and the program information update process for the acquired channel immediately after the specified program pause end time.
In the present embodiment, the third acquisition unit is configured by the third acquisition program 138 c, the CPU 131, the tuner 5, and the data decoder 74.

The fourth acquisition program 138d determines the current day of the week and / or the predetermined channel of the unacquired channel based on the second table 137 when the CPU 131 has an unacquired channel in the program information acquisition process by the execution of the third acquisition program 138c. Among the program pause end times up to several days ago, the latest program pause end time is identified, and immediately after the identified program pause end time, the program information acquisition process of the unacquired channel and the program information update process of the acquired channel And a program for realizing the function of performing the above.
In the present embodiment, the fourth acquisition program is formed by the fourth acquisition program 138d, the CPU 131, the tuner 5, and the data decoder 74.

When there is an unacquired channel in the program information acquisition process by execution of the fourth acquisition program 138d in the CPU 131, the fifth acquisition program 138e is based on the second table 137 and displays the program pause end time up to a predetermined number of days ago. The latest program pause end time is specified, and immediately after the specified program pause end time, a program information acquisition process for an unacquired channel and a program information update process for an acquired channel are realized. It is a program.
In the present embodiment, the fifth acquisition program 138e, the CPU 131, the tuner 5, and the data decoder 74 constitute a fifth acquisition unit.

  Here, referring to the flowcharts of FIG. 4 and FIG. 5, by executing the first acquisition program 138a, the second acquisition program 138b, the third acquisition program 138c, the fourth acquisition program 138d, and the fifth acquisition program 138e, A flow of program information acquisition processing executed in the broadcast receiving apparatus 100 of this embodiment will be described.

First, in step S1 of FIG. 4, the CPU 131 monitors the arrival of a default time that is a predetermined program information acquisition time. If the CPU 131 determines in step S1 that the default time has arrived based on the default time stored in the predetermined storage area and the current time measured by the time measuring unit 133 (step S1; Yes), the step Proceed to S2.
Here, in the present embodiment, the default time (predetermined program information acquisition time) is, for example, “AM 0:00”. As the predetermined program information acquisition time, it is preferable to set a time at which it is unlikely that the program will be suspended, and in addition, a time at which a general user is relatively less likely to watch More preferably.

In step S2, the CPU 131 sequentially selects all the channels stored in the channel memory 134 as receivable channels by the tuner 5, receives the digital broadcast signal of each channel, and from the received digital broadcast signal of each channel. A program information acquisition process for acquiring program information is executed.
In subsequent step S3, CPU 131 updates program information storage unit 135 based on the program information acquired in the program information acquisition process in step S2. In addition, the CPU 131 stores, in the first table 136, whether or not the program information can be acquired in each channel in the program information acquisition process (that is, the program information acquisition process in step S2) performed on that day, and based on the acquired program information. Thus, the information related to the program suspension period (program suspension start time, program suspension end time) in the first table 136 and the second table 137 are updated.

Next, in step S4, the CPU 131 determines whether or not there is an unacquired channel for which program information could not be acquired in the program information acquisition process (that is, the program information acquisition process in step S2) performed on that day. If the CPU 131 determines in step S4 that there is no unacquired channel (step S4; No), the process ends.
On the other hand, when the CPU 131 determines in step S4 that there is an unacquired channel (step S4; Yes), the process proceeds to step S5.

In step S5, CPU 131 calculates the time required t ₁ required for obtaining the non-acquisition channel, a confirmation time t ₂ required to confirm the presence or absence of the updating of the program information in the acquired channel, the total time T obtained by adding the.
Specifically, CPU 131 is the number of non-acquired channel, one channel program information acquisition processing a predetermined time required for the (e.g., 60 seconds) integrates the require time t ₁ it. Then, the total time T (t ₁ + t ₂ ) is calculated by adding the calculated necessary time t ₁ and the predetermined confirmation time t ₂ .
Incidentally, the number of acquired channel, then calculate the time calculated a predetermined time required for confirmation of the presence or absence of updating of the 1-channel program information, which may be used as the confirmation time t _2.

  Next, in step S <b> 6, the CPU 131 specifies the earliest program pause start time in the unacquired channel based on the first table 136.

Here, the program pause start time cannot be specified for a channel for which the program information cannot be acquired once over the past seven days or more and the information regarding the program pause period is not held.
Therefore, the CPU 131 determines whether there is a channel that holds information related to the program suspension period among the unacquired channels, and there is one or more unacquired channels that hold information related to the program suspension period. In this case, the earliest program pause start time is specified among unacquired channels that hold information related to the program pause period.
On the other hand, if there is no unacquired channel that holds information related to the program suspension period, the CPU 131 determines that the current day of the week and / or a predetermined number of days before the unacquired channel is based on the second table 137. The earliest program pause start time is specified among the program pause start times. Alternatively, the earliest program pause start time among the program pause start times up to a predetermined number of days ago may be specified.

Next, in step S7, the CPU 131 performs the program information acquisition process for the unacquired channel at the time before the total time T calculated in step S5 from the earliest program information start time in the unacquired channel specified in step S6. The program information update process for the acquired channel is performed.
In the program information update process of the acquired channel, the CPU 131 confirms whether or not there is an update from the program information acquired by the previous program information acquisition process based on the version information included in the program information. If there is no update, the program information is not reacquired, and if there is an update, the latest program information is acquired.
The CPU 131 updates the program information storage unit 135, the first table 136, and the second table 137 based on the program information acquired in the program information acquisition process and the program information update process in step S7.

Next, in step S8, the CPU 131 has an unacquired channel for which program information has not yet been acquired in the program information acquisition process performed on that day (that is, the program information acquisition process performed in step S2 and step S7). Determine whether or not. As described above, even if the program information cannot be acquired in the program information update process for the acquired channel (the channel in which the program information can be acquired in the program information acquisition process on that day), Is left as “acquired channel”. If the CPU 131 determines in step S8 that there is no unacquired channel (step S8; No), the process is terminated.
On the other hand, if the CPU 131 determines in step S8 that there is an unacquired channel (step S8; Yes), the process proceeds to step S9.

  In step S <b> 9, the CPU 131 specifies the latest program pause end time in the unacquired channel based on the first table 136.

Here, as described above, the program pause end time cannot be specified for a channel in which program information cannot be acquired once over the past seven days or more and information regarding the program pause period is not held.
Therefore, the CPU 131 determines whether there is a channel that holds information related to the program suspension period among the unacquired channels, and there is one or more unacquired channels that hold information related to the program suspension period. In this case, the latest program pause end time is specified among the unacquired channels that hold information related to the program pause period.
On the other hand, if there is no unacquired channel holding information related to the program suspension period, the CPU 131 does not execute the processes of steps S9 to S11, and proceeds to the process of step S12. As will be described later, in the process of step S12, program information is reacquired by using information related to past program pause periods.

  Next, in step S10 in FIG. 5, the CPU 131 waits for the latest program pause end time in the specified unacquired channel, and when the latest program pause end time in the identified unacquired channel arrives, immediately after that, An unacquired channel program information acquisition process and an acquired channel program information update process are performed.

In the present invention, “immediately after the program pause end time” may be a time within a predetermined time from the program pause end time. For example, the program stop end time is 1 second / 3 seconds / 10 seconds 30 seconds / 1 minute / 5 minutes / 10 minutes / 30 minutes / 60 minutes after the specified program pause end time Can be immediately after.
In fact, since program information may be obtained even before the program pause end time, at almost the same time as the program pause end time scheduled as the end time of the program pause period, It is good also as implementing program information acquisition processing.

Next, in step S11, the CPU 131 has not yet acquired the program information in the program information acquisition process performed on that day (that is, the program information acquisition process performed in step S2, step S7, and step S10). Determine if there is a channel. If the CPU 131 determines in step S11 that there is no unacquired channel (step S11; No), the process ends.
On the other hand, when the CPU 131 determines in step S11 that there is an unacquired channel (step S11; Yes), the CPU 131 proceeds to step S12.

In step S12, based on the second table 137, the CPU 131 shows the most recent program suspension end time up to the current day of the week (that is, the day of the current day) and a predetermined number of days before the unacquired channel (for example, 30 days before). Identify the end time of the program pause.
In subsequent step S13, the CPU 131 waits for the specified program pause end time to arrive, and immediately after the specified program pause end time arrives, immediately after that, the program information acquisition process for the unacquired channel and the program information update for the acquired channel are performed. Process.

Next, in step S14, the CPU 131 has already acquired the program information once in the program information acquisition process performed on that day (that is, the program information acquisition process performed in step S2, step S7, step S10, and step S13). Determine whether there are any unacquired channels. If the CPU 131 determines in step S14 that there is no unacquired channel (step S14; No), the process is terminated.
On the other hand, when the CPU 131 determines in step S14 that there is an unacquired channel (step S14; Yes), the CPU 131 proceeds to step S15.

In step S <b> 15, the CPU 131 specifies the latest program pause end time among the program pause end times up to a predetermined number of days ago (for example, 30 days ago) based on the second table 137.
In subsequent step S16, the CPU 131 waits for the specified program pause end time to arrive, and immediately after the specified program pause end time arrives, immediately after that, the program information acquisition process for the unacquired channel and the program information update for the acquired channel are performed. The process is executed, and this process ends.

  In the program information acquisition process in step S16, if there is an unacquired channel for which program information cannot be acquired yet, the broadcast receiving apparatus 100 is set in the standby mode by a predetermined timing thereafter (for example, the power-off operation after viewing ends). The program information may be re-acquired for the unacquired channel at the timing of shifting to (1).

  Next, the program information acquisition process executed in the broadcast receiving apparatus 100 of this embodiment will be described with a specific example.

First, the CPU 131 performs a first program information acquisition process at a default time (for example, AM 0:00). Then, the program information storage unit 135 is updated based on the acquired program information, and whether or not the program information of each channel can be acquired in the first program information acquisition process is stored in the first table 136. Further, the first table 136 and the second table 137 are updated based on the acquired program information.
For example, when the first program information acquisition process is executed, it is assumed that the user is viewing a program of UHF 21 and the program information of channels other than UHF 21 (for example, UHF 22, UHF 23, UHF 28) cannot be acquired. As illustrated in FIG. 2, the CPU 131 stores three channels UHF22, UHF23, and UHF28 as unacquired channels in the first table 136.

Next, the CPU 131 specifies the earliest program pause time in the three channels UHF22, UHF23, and UHF28, which are unacquired channels, based on the first table 136.
For example, as shown in FIG. 2, the program suspension is not scheduled at UHF 22 on the current day (for example, the 23rd day), the program suspension is scheduled from “AM0: 40” at UHF 23, and “AM0: 50 ”is scheduled to be suspended. Then, the CPU 131 specifies “AM0: 40” as the earliest program pause start time in the unacquired channel.
In addition, the CPU 131 calculates a total time T obtained by adding the necessary time t ₁ required for acquiring the unacquired channel and the confirmation time t ₂ required for confirming whether or not the program information is updated in the acquired channel. In calculating the total time T, the CPU 131 adds the predetermined time (for example, “60 seconds”) required for the program information acquisition process of one channel to the number “3” of unacquired channels, and the required time t ₁ “3 minutes”. Is calculated. Then, the calculated required time t ₁ “3 minutes” and the confirmation time t ₂ (for example, “2 minutes”) are added to calculate a total time T (for example, “5 minutes”).

Then, the CPU 131 waits for the arrival of time “AM0: 35”, which is a total time T “5 minutes” before the specified program suspension start time “AM0: 40”. For a certain UHF 22, UHF 23, and UHF 28, a second program information acquisition process and a program information update process for the UHF 21 that is the acquired channel are performed.
Thereafter, the CPU 131 updates the program information storage unit 135 based on the acquired program information, and stores in the first table 136 whether or not the program information can be acquired in the second program information acquisition process performed for the unacquired channel. To do. Further, the first table 136 and the second table 137 are updated based on the acquired program information.

  For example, when executing the second program information acquisition process performed for UHF22, UHF23, and UHF28 for which program information could not be acquired in the first program information acquisition process, the user is viewing the UHF22 program, and UHF23, UHF28 Suppose that the program information of could not be acquired. That is, at this time, the two channels UHF23 and UHF28 are unacquired channels.

Next, the CPU 131 specifies the latest program pause end time in the two channels UHF23 and UHF28 which are unacquired channels based on the first table 136.
For example, as shown in FIG. 2, it is assumed that the program pause is scheduled to end at “AM4: 30” in UHF 23 and the program pause is scheduled to end at “AM3: 50” in UHF 28. Then, the CPU 131 specifies “AM4: 30” as the latest program pause end time in the unacquired channel.

Then, the CPU 131 waits for the arrival of the specified program suspension end time “AM4: 30”, and immediately after “AM4: 30”, the third program information acquisition process for the unacquired channels UHF23 and UHF28 and the acquired program information are completed. The program information update process of UHF21 and UHF22 which are channels is performed.
Thereafter, the CPU 131 updates the program information storage unit 135 based on the acquired program information, and stores in the first table 136 whether or not the program information can be acquired in the third program information acquisition process performed for the unacquired channel. To do. Further, the first table 136 and the second table 137 are updated based on the acquired program information.

  For example, when the third program information acquisition process performed for UHF23 and UHF28 for which program information could not be acquired in the second program information acquisition process, the user is viewing a program on another channel, and again, UHF23, It is assumed that the program information of UHF 28 could not be acquired. That is, at this time, the two channels UHF23 and UHF28 are unacquired channels.

Next, the CPU 131 sets the second program pause end time among the program pause end times up to 30 days before the day of the day (for example, Tuesday) and the unacquired channel (that is, UHF23, UHF28) This is specified based on the table 137.
For example, as shown in FIG. 3, the latest program pause end time is “AM5: 50” among the program pause end times of UHF 23 and UHF 28 on Tuesday. Then, the CPU 131 identifies “AM5: 50” as the latest program pause end time at the program pause end time up to 30 days before Tuesday and the unacquired channels “UHF23, UHF28”.

Then, the CPU 131 waits for the specified program suspension end time “AM5: 50” to arrive, and immediately after “AM5: 50”, the fourth program information acquisition process for the unacquired channels UHF23 and UHF28 and the acquired program information are completed. The program information update process of UHF21 and UHF22 which are channels is performed.
Thereafter, the CPU 131 updates the program information storage unit 135 based on the acquired program information, and stores in the first table 136 whether or not program information can be acquired in the fourth program information acquisition process performed for the unacquired channel. To do. Further, the first table 136 and the second table 137 are updated based on the acquired program information.

  For example, when the fourth program information acquisition process performed for UHF23 and UHF28 for which program information could not be acquired in the third program information acquisition process, the user is watching the UHF28 program, and the UHF23 program is again displayed. Suppose that information could not be acquired. That is, at this time, the UHF 23 is an unacquired channel.

Next, the CPU 131 identifies the latest program pause end time based on the second table 137 among the program pause end times up to 30 days ago, regardless of the day of the week or the channel.
For example, as shown in FIG. 3, the latest program pause end time among the program pause end times up to 30 days ago is “AM5: 55”. Then, the CPU 131 specifies “AM5: 55” as the latest program pause end time at the program pause end time up to 30 days ago.

Then, the CPU 131 waits for the specified program suspension end time “AM5: 55” to arrive, and immediately after “AM5: 55”, the UHF23, which is an unacquired channel, receives the fifth program information acquisition process and the acquired channel. Program information update processing for a certain UHF 21, UHF 22, and UHF 28 is performed.
Thereafter, the CPU 131 updates the program information storage unit 135 based on the acquired program information, and stores in the first table 136 whether or not the program information can be acquired in the fifth program information acquisition process performed for the unacquired channel. To do. Further, the first table 136 and the second table 137 are updated based on the acquired program information.

For example, when the broadcast receiving apparatus 100 is in a standby state when the fifth program information acquisition process performed for the UHF 23 in which the program information could not be acquired in the fourth program information acquisition process, or the user has not acquired the channel When the UHF 23 program is being viewed, the UHF 23 program information can be acquired.
As a result, in the broadcast receiving apparatus 100, the program information for the current day has been acquired for all channels.

According to the broadcast receiving apparatus 100 of the present embodiment described above, in the broadcast receiving apparatus 100, the program information is acquired at a predetermined program information acquisition time by the execution of the first acquisition program 138a (first acquisition means) by the CPU 131. An acquisition process is performed, and the acquired program information is stored in the program information storage unit 135 (first storage unit), and the first table 136 (second storage unit) and the second table 137 (second storage unit). Based on the program information stored in the program information storage unit 135, the program suspension start time and the program suspension end time in the program suspension period up to a predetermined number of days ago are stored. In addition, when there is an unacquired channel in which program information could not be acquired in the program information acquisition process by execution of the first acquisition program 138a due to execution of the second acquisition program 138b (second acquisition means), the number of unacquired channels The time obtained by adding the predetermined time required for the program information acquisition process for one channel is calculated as the necessary time t ₁ required for acquiring the program information of the unacquired channel, and the unacquired channel is calculated based on the first table 136. the earliest program pause start time is specified in, from the identified program pause start time, required time t _1, the presence or absence of the updating of the program information acquired channel program information was obtainable in the program information acquisition processing a predetermined confirmation time t ₂ required for confirmation, the total time T minutes before the time obtained by adding a turn of the yet-to-be-obtained channel An information acquisition process, and the program information update processing of acquired channel, is performed. Further, when there is an unacquired channel in the program information acquisition process by the execution of the second acquisition program 138b, the execution of the third acquisition program 138c (third acquisition means) The latest program pause end time is specified, and immediately after the specified program pause end time, the program information acquisition process for the unacquired channel and the program information update process for the acquired channel are performed.
That is, in the program information acquisition process performed at a predetermined program information acquisition time, if there is an unacquired channel for which program information could not be acquired, the earliest program pause in the unacquired channel for which program information could not be acquired The program information acquisition process for the unacquired channel is performed at least a necessary time before the start time. Furthermore, in the program information processing performed at least the required time before the earliest program pause start time in the unacquired channel, if there is an unacquired channel, immediately after the latest program pause end time in the unacquired channel Unacquired channel program information acquisition processing is performed.
Therefore, in the program information acquisition process performed at a predetermined program information acquisition time, even if program information for all channels cannot be acquired, a program pause period in an unacquired channel where program information cannot be acquired is avoided. Thus, the program information of the unacquired channel is reacquired at an appropriate timing, and the broadcast receiving apparatus 100 can acquire the program information more reliably.

Further, when there is an unacquired channel in the program information acquisition process by the execution of the third acquisition program 138c, the execution of the fourth acquisition program 138d (fourth acquisition means) causes the current day of the week and Among the program pause end times up to a predetermined number of days before the unacquired channel, the latest program pause end time is identified, and immediately after the identified program pause end time, the program information acquisition process of the unacquired channel and the acquired Channel program information update processing is performed.
Furthermore, when there is an unacquired channel in the program information acquisition process by the execution of the fourth acquisition program 138d, the execution of the fifth acquisition program 138e (fifth acquisition means) causes a predetermined number of days ago based on the second table 137. The latest program pause end time is identified, and immediately after the identified program pause end time, the program information acquisition process of the unacquired channel and the program information update process of the acquired channel are To be implemented.
That is, even in the program information acquisition process performed immediately after the latest program pause end time in the unacquired channel, if there is an unacquired channel, the program pause end time up to the current day of the week and a predetermined number of days before the unacquired channel Among these, program information acquisition processing is performed immediately after the latest program pause end time. Further, even in the program information acquisition process performed immediately after the latest program pause end time among the program pause end times up to a predetermined number of days before the current day of the week and the unacquired channel, if there is an unacquired channel, The latest program pause end time among the program pause end times up to several days ago is specified, and the program information acquisition process is performed immediately after the specified program pause end time.
Therefore, even when there is an unacquired channel in which program information cannot be acquired in the program information acquisition process performed at each timing, the program information of the unacquired channel is re-recovered at an appropriate timing based on information related to the past program suspension period. Acquisition will be carried out, and program information can be acquired more reliably in the broadcast receiving apparatus 100.

  Furthermore, since the program information update process for the acquired channel is performed together with the program information acquisition process for the unacquired channel, the broadcast receiving apparatus 100 can hold the latest program information.

  The scope of the present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.

For example, the order in which the program information acquisition processing by the second acquisition means, the program information acquisition processing by the third acquisition means, the program information acquisition processing by the fourth acquisition means, and the program information acquisition processing by the fifth acquisition means is performed in the above embodiment. It is not restricted to the order illustrated by (1), It can implement in arbitrary orders.
Further, it is not necessary to perform all the program information acquisition processing by the second acquisition means, the program information acquisition processing by the third acquisition means, the program information acquisition processing by the fourth acquisition means, and the program information acquisition processing by the fifth acquisition means. One is sufficient.

  Further, for example, in the above-described embodiment, “predetermined days” is described as indicating a date that is a predetermined number of days after the date with reference to the day with the latest date in the acquired program information. In another embodiment, a day that is a predetermined number of days after the current day may be “a predetermined number of days ago”.

  In addition to performing the first program information acquisition process at the default time, if there is an unacquired channel even though the program information acquisition process has been acquired at all timings, the second default time (for example, AM6 0:00), the program information acquisition process may be performed.

Moreover, the timing which implements a program information acquisition process is not restricted to the timing illustrated in the said embodiment.
For example, the latest program pause end time may be specified among the program pause end times up to a predetermined number of days before the current day of the week, and the program information acquisition process may be performed immediately after the specified program pause end time.
Also, for example, the latest program pause end time may be specified among the program pause end times up to a predetermined number of days before the unacquired channel, and the program information acquisition process may be performed immediately after the specified program pause end time. good.
Further, for example, the earliest program pause start time among the program pause start times up to a predetermined day before the current day of the week and the unacquired channel is specified, and the program information acquisition process is performed before the specified program pause start time. It is good also to carry out.
Further, the earliest program pause start time among the program pause start times up to a predetermined number of days before the current day of the week may be specified, and the program information acquisition process may be performed before the specified program pause start time.
Further, for example, the earliest program pause start time among the program pause start times up to a predetermined number of days before the unacquired channel may be specified, and the program information acquisition process may be performed before the specified program pause start time. good.
Further, for example, the earliest program pause start time is identified among the program pause start times up to a predetermined number of days ago regardless of the day of the week or the channel, and the program information acquisition process is performed before the specified program pause start time. It's also good.

Further, in the present embodiment, from the earliest program pause start time in the non-acquisition channel, the time required t ₁ required for obtaining the non-acquisition channel, it checks the time required to verify the presence or absence of the updating of the program information in the acquired channel t ₂ As described above, the program information acquisition process is performed at the time T minutes before the total time. For example, the time required to update the program information in the acquired channel is calculated, and the earliest program in the unacquired channel is calculated. The program information acquisition process is performed at a time before the total time obtained by adding the required time t ₁ required for acquisition of the unacquired channel and the time required for updating the program information in the acquired channel from the pause start time. It may be configured.

  Further, although it is determined that there is a channel in the channel scan, there is a channel that is likely to be unable to acquire program information because the reception level is low. Therefore, among the channels that can be received in the channel initial scan, the channel whose signal reception level is lower than the predetermined threshold is designated as the NG channel, and the program information of the NG channel cannot be acquired in the program information acquisition process. Even so, it may be configured to be excluded from unacquired channels.

  Furthermore, the acquisition target of the program information in the present invention is not limited to digital terrestrial broadcasting, and any other broadcast service can be acquired as long as the broadcast signal includes the program information. . That is, according to the broadcast situation, revision of the broadcast standard, the function of the broadcast receiver, etc., for example, BS digital broadcast, broadband CS (110 ° CS) digital broadcast, radio broadcast, etc. can be used as the program information acquisition target in the present invention. good.

100 broadcast receiving apparatus 5 tuner (receiving means, first acquisition means, second acquisition means, third acquisition means, fourth acquisition means, fifth acquisition means)
74 Data decoder (first acquisition means, second acquisition means, third acquisition means, fourth acquisition means, fifth acquisition means)
131 CPU (first acquisition means, second acquisition means, third acquisition means, fourth acquisition means, fifth acquisition means)
135 Program information storage unit (first storage means)
136 First table (second storage means)
137 Second table (second storage means)
138a First acquisition program (first acquisition means)
138b Second acquisition program (second acquisition means)
138c Third acquisition program (third acquisition means)
138d Fourth acquisition program (fourth acquisition means)
138e Fifth acquisition program (fifth acquisition means)

Claims (7)

In the broadcast receiving apparatus comprising a receiving means for receiving a digital broadcast signal including turn set information,
Acquisition means for acquiring program information at a predetermined program information acquisition time;
And SL憶means you store information related to a program pause start time and / or program pause end time,
With
The acquisition means, when the program information cannot be acquired, acquires at least the program information at a predetermined time before the program suspension start time or within a predetermined time after the program suspension end time. Receiver device. The storage means stores the program information acquired by the acquisition means, and based on the stored program information, the program suspension start time and / or program suspension from a predetermined reference date to a predetermined number of days ago Remembers information about the end time,
The acquisition means calculates the time required to acquire program information of an unacquired channel for which program information could not be acquired, and specifies the earliest program pause start time in the unacquired channel based on the storage means. First program information acquisition processing for acquiring program information of at least the unacquired channel at least at the time before the necessary time from the specified program pause start time, or program information based on the storage means A second program information acquisition process for specifying the latest program pause end time in the unacquired channel that could not be acquired, and acquiring program information of at least the unacquired channel immediately after the identified program pause end time. The broadcast receiving apparatus according to claim 1, wherein the broadcast receiving apparatus is implemented when there is the unacquired channel. The broadcast receiving apparatus according to claim 2, wherein the acquisition unit performs the second program information acquisition process when there is the unacquired channel in the first program information acquisition process. The acquisition means, based on the storage means, obtains the latest program pause end time among the program pause end times from a current day of the week and / or a predetermined reference day of the unacquired channel to a predetermined number of days ago. Specified and immediately after the specified program pause end time, at least a third program information acquisition process for acquiring program information of the unacquired channel, or a predetermined reference day based on the storage means A fourth program information acquisition process for specifying the latest program pause end time among the program pause end times up to several days ago and acquiring program information of at least the unacquired channel immediately after the identified program pause end time The broadcast receiving apparatus according to claim 3, wherein the broadcast receiving apparatus is implemented when there is the unacquired channel in the second program information acquisition process. 5. The broadcast receiving apparatus according to claim 4, wherein the acquisition unit performs the fourth program information acquisition process when there is the unacquired channel in the third program information acquisition process. In the first program information acquisition process, the acquisition unit calculates, as the necessary time, a time obtained by adding a predetermined time required to acquire program information of one channel to the number of unacquired channels. The broadcast receiving apparatus as described in any one of Claims 2-5. In the first program information acquisition process, the acquisition unit updates the necessary time and the program information of the acquired channel from which the program information can be acquired from the earliest program pause start time in the unacquired channel. The acquisition of the program information of the unacquired channel and the update of the program information of the acquired channel are performed at a time before a total time obtained by adding a predetermined confirmation time required for the presence / absence confirmation. The broadcast receiving device according to any one of claims 2 to 6.

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