JP7010756B2 - Broadcast receiving device and broadcasting receiving method - Google Patents

Description

Embodiments of the present invention relate to a broadcast receiving device and a broadcast receiving method.

In recent years, as a service for providing 4K / 8K ultra-high-definition digital broadcasting, test broadcasting of high-bandwidth BS broadcasting has been carried out. High-bandwidth BS broadcasting is scheduled to start practical broadcasting after December 1, 2018, and standards have been established by the Association of Radio Industries and Businesses (ARIB).

In this advanced wideband BS broadcasting, it is considered to provide a 4K program that provides 4K resolution video and an 8K program that provides 8K resolution video on the same channel at different time zones.

As an advanced wideband BS broadcast receiving device, it is expected that a model that can watch 4K programs but does not support 8K programs and cannot watch 8K programs will be sold. When the 8K program is started after the end of the 4K program, such a 4K-compatible broadcast receiving device cannot display the video of the 8K program and may display a black screen.

For this reason, when the resolution of the video is a resolution that cannot be displayed on the display unit, a broadcast receiving device that controls the display state of the display to a predetermined display state and notifies the user of the reason why the video cannot be displayed is provided. It is expected to be done.

However, when a recording reservation for a high-resolution program such as an 8K program that cannot display an image is made in a 4K-compatible broadcast receiving device, it is not possible to notify that the high-resolution program cannot be recorded.

Japanese Unexamined Patent Publication No. 2017-11697

It is an object of the present invention to provide a broadcast receiving device and a broadcast receiving method capable of notifying a user that a high-resolution program cannot be recorded when a recording reservation is made for a high-resolution program.

The broadcast receiving device of the embodiment includes a recording reservation unit and a control unit. The recording reservation unit reserves recording of a desired program or a desired date and time. When the control unit determines whether the desired program is a program having a resolution that can be displayed on the video display unit when the recording reservation of the desired program is instructed, and if it is determined that the program has a resolution that cannot be displayed on the video display unit, the control unit determines. Notify that recording reservation is not possible. Further, when the recording reservation of the desired date and time is instructed, the control unit determines whether the resolutions of the plurality of programs included in the desired date and time are the resolutions that can be displayed on the video display unit, and among the plurality of programs. If there is a program with a resolution that cannot be displayed on the video display unit, only the program that can be displayed on the video display unit is recorded, and the program that cannot be displayed on the video display unit is not recorded.

It is a block diagram which shows the broadcast receiving apparatus which concerns on one Embodiment. It is a flowchart which shows an example of the process at the time of recording reservation of a high-resolution program which cannot be watched. It is a figure which shows an example of the message displayed at the time of recording reservation of a high-resolution program which cannot be watched. It is a figure for demonstrating an example of the date / time designation screen displayed on the image display part at the time of recording reservation by the date / time designation. It is a flowchart which shows an example of the process at the time of recording reservation by specifying a date and time.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a broadcast receiving device according to an embodiment.

In FIG. 1, the antenna 21 receives an advanced wideband BS broadcast and an advanced wide band CS broadcast (hereinafter, these are referred to as advanced wideband broadcasts) and supplies an advanced wideband broadcast signal to the input terminal 2a of the broadcast receiving device 1. The high-wideband broadcast signal input to the input terminal 2a is supplied to the tuner unit Tu.

The broadcast receiving device 1 includes a control unit 10. The control unit 10 may be configured by a processor using a CPU or the like and operate according to a program stored in the ROM 10a to control each unit, or may be a part or all of the functions in an electronic circuit of hardware. It may be the one that realizes.

The tuner unit Tu has a plurality of tuners Tu1, Tu2, ... (Hereinafter, these are collectively referred to as tuner Tun). The tuner Tun is controlled by the control unit 10 to select a broadcast signal of a desired channel from the input high-bandwidth broadcast signals, and outputs the selected signal to the signal processing unit 3. The signal processing unit 3 demodulates the input broadcast signal.

In the example of FIG. 1, only the antenna 21 corresponding to one advanced wideband broadcasting is shown, but terrestrial digital broadcasting, BS broadcasting (including advanced wideband BS broadcasting), CS broadcasting (advanced narrowband CS broadcasting, advanced wideband CS broadcasting) can be used. An antenna corresponding to (including) may be provided to supply a signal from each antenna to the tuner unit Tu. In this case, the signal processing unit 3 performs demodulation corresponding to the modulation method of each broadcast. As a result, the signal processing unit 3 can obtain a stream of each broadcast signal. Although FIG. 1 shows an example in which each broadcast signal is input via an antenna, the transmission path of the broadcast signal is not particularly limited, and IP broadcast is received via an Internet line without going through an antenna. Or, it may be received via a cable television broadcasting network.

For example, for an advanced wideband broadcast signal, a TLV (Type Length Value) stream can be obtained by demodulation of the signal processing unit 3. The signal processing unit 3 separates the IP packet contained in the TLV stream, and the video data, audio data, subtitle data, character super, application data, ECM (Entitlement Control Message), and EMM (Entitlement Management Message) contained in the IP packet. ) Is included in various messages.

The signal processing unit 3 extracts a transport stream (transport stream multiplexed according to the MPEG-2 Systems standard) by demodulation processing for the terrestrial digital broadcast signal. Further, the signal processing unit 3 extracts video data and audio data from the transport stream, and also extracts various messages including ECM and EMM.

Further, the signal processing unit 3 performs decoding processing on the video data and audio data of each broadcasting method and then performs predetermined signal processing to obtain video data and audio data. The signal processing unit 3 gives video data and audio data to the graphic processing unit 4 or the audio processing unit 7, respectively, and gives other data to the control unit 10. The OSD signal generation unit 5 generates image information (OSD signal) for superimposing display based on the information given by the control unit 10, and supplies it to the graphic processing unit 4.

The graphic processing unit 4 superimposes the digital video data from the signal processing unit 3 and the image based on the GUI (Graphical User Interface) from the OSD signal generation unit 5, and sends the superposed image to the video processing unit 6. ..

For example, in addition to video data, various data for acquiring a program, electronic program guide (EPG) information, program attribute information, subtitle information, etc. are given to the graphic processing unit 4, and the graphic processing unit 4 inputs these. Image generation processing for displaying EPG, subtitles, etc. can be performed based on the obtained information.

The video processing unit 6 is controlled by the control unit 10 to convert the digital broadcast signal from the graphic processing unit 4 into a format (number of pixels, frame frequency, scanning method) that can be displayed by the video display unit 8, and display colors. Is arbitrarily adjusted and output to the video display unit 8. As a result, the image can be displayed on the display screen of the image display unit 8.

Further, the voice processing unit 7 converts the digital voice data from the signal processing unit 3 into an analog signal that can be reproduced by the speaker 9, and then outputs the digital voice data to the speaker 9 to reproduce the voice. If the broadcast receiving device is a set-top box or the like, it is not necessary to include the video display unit 8 and the speaker 9.

The broadcast receiving device 1 is provided with a card interface (I / F) 13, a communication I / F16, a USB I / F17, and an HDMI I / F18. The card I / F 13 enables data to be transmitted / received between the IC card 23 mounted on the card holder 14 and the control unit 10. For example, when a CAS card compatible with the current digital broadcasting is adopted as the IC card 23, the card I / F 13 transmits / receives data related to the descramble of the current broadcasting.

The communication I / F 16 is an interface corresponding to a predetermined communication path such as IEEE 1394, and is connected to an external device (not shown) via the terminal 2b to enable data transmission / reception between the external device and the control unit 10. .. Further, the HDMI I / F18 is an interface corresponding to the HDMI standard, and is connected to an external device (not shown) via the terminal 2d to receive an HDMI signal from the external device and output it to the control unit 10 or a control unit. The HDMI signal from 10 can be output to an external device via the terminal 2d.

The USB I / F 17 is an interface compatible with the USB standard, and is connected to a USB compatible device such as an HDD 24 via a terminal 2c to enable data transmission / reception between the USB compatible device and the control unit 10. For example, when the HDD 24 is connected to the terminal 2c, the control unit 10 can give video data to the HDD 24 via the USB I / F 17 and the terminal 2c for recording. The control unit 10 can also record a signal of a broadcast program by configuring the recording unit with a built-in HDD, an optical disk drive, an SD (registered trademark) card reader / writer, or the like.

The broadcast receiving device 1 is provided with an operation unit 11 and a receiving unit 12. The operation unit 11 is composed of switches, keys, buttons and the like (not shown), and outputs an operation signal based on the user operation to the control unit 10. Further, the receiving unit 12 receives an operation signal based on the user operation from the remote controller (hereinafter referred to as a remote controller) 22 and outputs the received operation signal to the control unit 10. The control unit 10 controls each unit of the broadcast receiving device 1 based on the operation signals from the operation unit 11 and the reception unit 12. For example, when the remote controller 22 performs an operation of designating a reception channel number by using an up / down key, a one-touch channel selection button, or the like, each tuner Tun performs a channel selection operation according to an operation signal from the remote controller 22. conduct.

The broadcast receiving device 1 is provided with a CAS module 15. The CAS module 15 is used for controlling the limited reception method. The master key Km unique to the module is stored in the CAS module 15. The EMM extracted by the signal processing unit 3 includes a work key Kw for descrambling. This EMM is encrypted with an individual master key Km for each module, and the CAS module 15 decrypts the EMM given from the control unit 10 using the master key Km to acquire the work key Kw.

Broadcast data may be encrypted with the scramble key Ks. The scrambled keys Ks are multiplexed and transmitted to the ECM. This ECM is encrypted by a work key Kw that is variable for each broadcaster, and the CAS module 15 uses the stored work key Kw to decrypt the ECM given by the control unit 10 and scramble the key. Get Ks. The scramble key Ks from the CAS module 15 is supplied to the signal processing unit 3 via the control unit 10, and the signal processing unit 3 performs descramble processing using the scramble key Ks.

The scrambled key Ks is updated in a relatively short time, and the CAS module 15 always acquires the scrambled key Ks and outputs the scrambled key Ks to the signal processing unit 3 while viewing the scrambled program. When a CAS card is used as the IC card 23, the decoding operation of the CAS card is the same as that of the CAS module 15.

Further, when the user instructs the recording reservation of the desired program from the electronic program guide (EPG), the control unit 10 determines whether or not the resolution of the desired program is a resolution that can be displayed on the video display unit 8. When the control unit 10 determines that the resolution of the desired program is not a resolution that can be displayed on the video display unit 8, the control unit 10 notifies that the recording cannot be reserved. On the other hand, when the control unit 10 determines that the resolution of the desired program is a resolution that can be displayed on the video display unit 8, the control unit 10 executes the recording reservation of the desired program without notifying that the recording reservation cannot be made.

For example, it is assumed that the broadcast receiving device 1 can watch a 4K program but cannot watch an 8K program. If the desired program for which recording reservation is instructed is an 8K program, the control unit 10 determines that it is a high-resolution program that cannot be displayed on the video display unit 8, and notifies the user that the recording cannot be reserved because it is a high-resolution program. do.

Next, the operation of the broadcast receiving device 1 when making a recording reservation for a high-resolution program that cannot be viewed will be described with reference to FIGS. 2 and 3.

FIG. 2 is a flowchart showing an example of processing when a high-resolution program that cannot be viewed is reserved for recording, and FIG. 3 is a diagram showing an example of a message displayed when a high-resolution program that cannot be viewed is reserved for recording. ..

When the user operates the remote controller 22 to make a recording reservation for a desired program from the electronic program guide, the control unit 10 displays the electronic program guide 31 generated from the electronic program guide information on the video display unit 8 (S1). By this process, the electronic program guide 31 shown in FIG. 3 is displayed on the video display unit 8.

When the user operates the remote controller 22 and instructs the recording reservation of the desired program 32 from the electronic program guide 31 (S2), a control signal for instructing the recording reservation of the desired program 32 is transmitted from the remote controller 22 via the receiving unit 12. Is input to the control unit 10. In this way, the control unit 10 constitutes a recording reservation unit that can make a recording reservation for a desired program.

When the control signal for instructing the recording reservation of the desired program 32 is input, the control unit 10 determines the resolution of the desired program 32 (S3).

Then, the control unit 10 determines whether or not the determined resolution is a resolution that can be displayed on the video display unit 8 (S4). In addition, "whether or not the determined resolution is a resolution that can be displayed on the video display unit 8" means, for example, a desired program 32 having an 8K resolution even if the broadcast receiving device 1 is provided with a panel having an 8K resolution. It also includes cases where it cannot be displayed normally, such as when it does not have the ability to display the desired program 32 with 8K resolution because it does not have the ability to decode. On the contrary, for example, in the case of the broadcast receiving device 1 having a panel having a 4K resolution and having a specification of down-converting the 8K resolution and displaying it at the 4K resolution, the above-mentioned "determined resolution is the video display unit 8". As a result of the determination of "whether or not the resolution can be displayed on the screen", it is determined that the determined resolution is the resolution that can be displayed on the video display unit 8. Further, for example, when the broadcast receiving device 1 is a set-top box, it is read and determined so that the desired program 32 having an 8K resolution cannot be normally received and output via the I / F. When the control unit 10 determines that the determined resolution is not a resolution that can be displayed on the video display unit 8 (S4: NO), the control unit 10 notifies that the recording cannot be reserved because of the high resolution program (S5). Specifically, as shown in FIG. 3, when the control unit 10 determines that the determined resolution is not a resolution that can be displayed on the video display unit 8, "this program is an 8K program that is not supported, so it is recorded. The message 33 "Cannot be reserved" is displayed in the center of the electronic program table 31 to notify the user that the desired program 32 cannot be reserved for recording. The position where the message 33 is displayed is not limited to the center of the electronic program guide 31, and may be another position.

In this way, the control unit 10 determines whether the resolution of the desired program 32 for which the user has tried to instruct the recording reservation is a resolution that can be displayed on the video display unit 8 or a high resolution that cannot be displayed. Then, when the control unit 10 determines that the resolution of the desired program 32 is a high resolution that cannot be displayed on the video display unit 8, the control unit 10 displays a message 33 on the video display unit 8 and notifies the user that recording reservation cannot be made.

On the other hand, when the determined resolution is determined to be a resolution that can be displayed on the video display unit 8 (S4: YES), the control unit 10 does not notify that the recording cannot be reserved because of the high resolution program (S6). That is, when the control unit 10 determines that the determined resolution is a resolution that can be displayed on the video display unit 8, the control unit 10 controls so that the message 33 is not displayed in the center of the electronic program guide 31. After that, the control unit 10 reserves recording of the desired program 32 (S7), and ends the process. In this way, the control unit 10 constitutes a recording reservation unit that can make a recording reservation for the desired program 32.

As described above, in the case of a high-resolution program in which the desired program 32 for which the recording reservation is to be instructed cannot be displayed on the video display unit 8, the broadcast receiving device 1 cannot make a recording reservation because it is a high-resolution program. Can notify the user. As a result, the broadcast receiving device 1 can prevent the recording reservation of the desired program 32 that cannot be displayed on the video display unit 8. Further, the user can recognize the reason why the desired program 32 cannot be reserved for recording.

Therefore, according to the broadcast receiving device of the present embodiment, when a high-resolution program is reserved for recording, it is possible to notify the user that recording is not possible.

(Modification 1)
Next, a modification 1 will be described.

In the above-described embodiment, the case where the desired program 32 is reserved for recording from the electronic program guide 31 has been described, but in the first modification, the case where the recording is reserved by specifying the date and time will be described.

FIG. 4 is a diagram for explaining an example of a date and time designation screen displayed on the video display unit when recording is reserved by specifying the date and time.

When the user operates a predetermined button on the remote controller 22, the date and time designation screen 40 shown in FIG. 4 is displayed on the video display unit 8. The user selects an item (reservation date, start time, end time) to be set by operating the left and right keys provided on the remote controller 22, and changes the recording reservation date and time by operating the up and down keys, or Can be set.

Here, when the date and time of the recording reservation is set by the date and time designation screen 40, for example, a plurality of programs may be included in the set time zone (4 o'clock to 6 o'clock). When a plurality of programs are included, for example, it is assumed that 4K programs and 8K programs are mixed. Although the broadcast receiving device 1 has a mixture of 4K programs and 8K programs, if all the time zones set by specifying the date and time are recorded, for example, there is a time zone in which only the black screen is recorded. Become.

Therefore, in the first modification, when the date and time (time zone) set by the date and time designation includes a high-resolution program that cannot be displayed on the video display unit 8, the control unit 10 can display the time on the video display unit 8. It is controlled so that only the programs in the band are recorded and the high-resolution programs in the time zone that cannot be displayed on the video display unit 8 are not recorded. In this way, the control unit 10 constitutes a recording reservation unit that can make a recording reservation for a desired date and time.

Next, the operation of the broadcast receiving device 1 when making a recording reservation by designating the date and time will be described with reference to FIG.

FIG. 5 is a flowchart showing an example of a process for making a recording reservation by designating a date and time.

When the user operates the remote controller 22 to make a recording reservation by specifying the date and time, the control unit 10 displays the date and time designation screen 40 shown in FIG. 4 on the video display unit 8 (S11). When the user operates the remote controller 22 and instructs the recording reservation of the desired date and time (S12), a control signal for instructing the recording reservation of the desired date and time is input from the remote controller 22 to the control unit 10 via the receiving unit 12. To.

When the control signal for instructing the recording reservation of the desired date and time is input, the control unit 10 determines the resolution of all the programs included in the desired date and time (S13). Then, the control unit 10 determines whether or not a program having a resolution that cannot be displayed on the video display unit 8 is included (S14). The "program having a resolution that cannot be displayed on the video display unit 8" has, for example, the ability to decode a desired program 32 having an 8K resolution even if the broadcast receiving device 1 has a panel having an 8K resolution. It also includes the case of a program that cannot be displayed normally, such as not having the ability to display a desired program 32 having an 8K resolution. On the contrary, for example, in the case of the broadcast receiving device 1 having a panel having a 4K resolution and having a specification of down-converting the 8K resolution and displaying it at the 4K resolution, a program having a resolution that can be displayed on the video display unit 8. The above determination is made by the control unit 10. Further, for example, when the broadcast receiving device 1 is a set-top box, whether or not a program that normally receives a desired program 32 having an 8K resolution and cannot be output via the I / F is included. Read as and judge.

When the control unit 10 determines that the video display unit 8 does not include a program having a resolution that cannot be displayed (S14: NO), the control unit 10 records all the programs included in the desired date and time (S15).

On the other hand, when the control unit 10 determines that a program having a resolution that cannot be displayed on the video display unit 8 is included (S14: YES), the control unit 10 records only the program that can be displayed on the video display unit 8 and displays it on the video display unit 8. Programs that cannot be recorded are not recorded (S16). Then, the control unit 10 issues a notification from the machine (S17), and ends the process.

That is, when the control unit 10 includes a program having a resolution that cannot be displayed on the video display unit 8 at a desired date and time (or a desired time zone) specified by the date and time, the control unit 10 does not execute recording, for example, the book. Issue a notification from the machine so that the user can see the notification from a predetermined menu. The control unit 10 may control the OSD signal generation unit 5 to display a pop-up message on the video display unit 8.

The control unit 10 displays, for example, a notification that "an unsupported 8K high-resolution program included in the recording reserved time zone has not been recorded" or a pop-up message on the video display unit 8.

By the above processing, the broadcast receiving device 1 does not record the program of the resolution that cannot be displayed on the video display unit 8 during the time zone specified by the date and time, and records only the program of the resolution that can be displayed on the video display unit 8. Can be done. Further, the broadcast receiving device 1 issues a notification from the unit when a program having a resolution that cannot be displayed on the video display unit 8 is included in the time zone specified by the date and time. As a result, the user can recognize that there is an unrecorded program in the time zone specified by the date and time.

(Modification 2)
Next, the second modification will be described.

In the above-described embodiment, when the recording reservation is made, if the resolution of the desired program 32 is a resolution that can be displayed on the video display unit 8, the recording reservation is executed. When the broadcast receiving device 1 can view, for example, a 4K program, the recording reservation of the 4K program can be made.

However, it is conceivable that the desired program 32 is switched from, for example, a 4K program to an 8K program after the recording reservation is instructed due to the convenience of the broadcaster or the like. In this case, since the broadcast receiving device 1 cannot watch a high-resolution 8K program, for example, a black screen will be recorded forever. Further, the user cannot recognize why the desired program 32 cannot be recorded.

Therefore, in the second modification, when the desired program 32 reserved for recording is switched to a program having a resolution that cannot be displayed on the video display unit 8, the control unit 10 does not execute recording, for example, from the machine. A notification is issued so that the user can see the notification from a predetermined menu, or the OSD signal generation unit 5 is controlled to display a pop-up message on the video display unit 8.

The control unit 10 displays, for example, a notification that "the program reserved for recording could not be recorded because it was switched to an unsupported 8K high-resolution program", or a pop-up message is displayed on the video display unit 8.

As a result, the user can recognize the reason why the desired program 32 for which the recording reservation is instructed cannot be recorded in the broadcast receiving device 1.

The present invention is not limited to the above-described embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. Further, the above-described embodiment includes inventions at various stages, and various inventions can be extracted by an appropriate combination in a plurality of disclosed constituent requirements. For example, even if some constituents are deleted from all the constituents shown in the embodiment, the problems described in the section of the problem to be solved by the invention can be solved, and the problems described in the section of the effect of the invention are described. If the effect is obtained, the configuration in which this configuration requirement is deleted can be extracted as an invention.

1 ... Broadcast receiver, 2a ... Input terminal, 2b-2d ... Terminal, 3 ... Signal processing unit, 4 ... Graphic processing unit, 5 ... OSD signal generation unit, 6 ... Video processing unit, 7 ... Audio processing unit, 8 ... Video display unit, 9 ... speaker, 10 ... control unit, 11 ... operation unit, 12 ... receiver unit, 13 ... card I / F, 14 ... card holder, 15 ... CAS module, 16 ... communication I / F, 17 ... USB I / F, 18 ... HDMI I / F, 21 ... Antenna, 22 ... Remote controller, 23 ... Card, 24 ... HDD, 31 ... Electronic program guide, 32 ... Program, 33 ... Message, 40 ... Date and time designation screen.

Claims (6)

A recording reservation unit that reserves recording of a desired program or a desired date and time,
When the recording reservation of the desired program is instructed, it is determined whether the desired program is a program having a resolution that can be displayed on the video display unit, and if it is determined that the program has a resolution that cannot be displayed on the video display unit, recording is performed. A control unit that notifies you that you cannot make a reservation,
Equipped with
When the recording reservation of the desired date and time is instructed, the control unit determines whether the resolutions of the plurality of programs included in the desired date and time are the resolutions that can be displayed on the video display unit, and the plurality of programs. When there is a program having a resolution that cannot be displayed on the video display unit among the programs, only the program that can be displayed on the video display unit is recorded among the plurality of programs, and the program that cannot be displayed on the video display unit is recorded. A broadcast receiver characterized by not doing so. The first aspect of the present invention is characterized in that, when the control unit determines that the resolution of the desired program is a resolution that can be displayed on the video display unit, the control unit executes the recording reservation without notifying that the recording reservation cannot be made. Broadcast receiver as described in. The broadcast receiving device according to claim 1 , wherein the control unit records all of the plurality of programs when there is no program having a resolution that cannot be displayed on the video display unit among the plurality of programs. .. The broadcast receiving device according to claim 1 , wherein the control unit does not record the switched program when the desired program reserved for recording is switched to a program having a resolution that cannot be displayed on the video display unit. .. The fourth aspect of claim 4 , wherein the control unit issues a notification from the machine or displays a pop-up message on the video display unit to notify that the switched program could not be recorded. Broadcast receiver. A recording reservation step for recording a desired program or a desired date and time, and
When the recording reservation of the desired program is instructed, it is determined whether the desired program is a program having a resolution that can be displayed on the video display unit, and if it is determined that the program has a resolution that cannot be displayed on the video display unit, recording is performed. A notification step to notify you that you cannot make a reservation, and
Equipped with
The notification step determines whether the resolutions of the plurality of programs included in the desired date and time are the resolutions that can be displayed on the video display unit when the recording reservation of the desired date and time is instructed. When there is a program having a resolution that cannot be displayed on the video display unit among the programs, only the program that can be displayed on the video display unit is recorded among the plurality of programs, and the program that cannot be displayed on the video display unit is recorded. A broadcast reception method characterized by not doing so.

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