JP4234539B2 - Broadcast receiving apparatus and broadcast receiving method - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus that receives a digital broadcast and extracts and uses additional information including information related to a program that is multiplexed and transmitted with video and audio data constituting the program. The present invention relates to a broadcast receiving apparatus and a broadcast receiving method capable of efficiently extracting information.

  Currently, digital broadcasting that transmits and receives digital signals is in practical use. This broadcasting employs the MPEG (Moving Picture Experts Group) 2 system, which is a moving picture coding standard system, and multi-channel digital transmission that multiplexes and transmits encoded image data of a plurality of channels that has been highly efficient compression coded. A transmission system is realized. The system using the MPEG2 system is described in the document “ISO / IEC 13818-1”.

  On the broadcast station side, the digital video / audio data and additional information data constituting the program are respectively compressed by the above-described compression method, and a multiplexed signal in the form of TS (transport stream) is generated and broadcast.

  In addition to this multiplexed signal, PMT (Program Map Table) in which description about the program is described as program information data, PAT (Program Association Table) for extracting PMT of each program, and information related to pay broadcasting are described. Data such as a CAT (Conditional Access Table) and an NIT (Network Information Table) in which information on the network used is described is also time-division multiplexed.

  Further, the program information data includes an SIT (Service Description Table) in which information related to the organization channel is described, an EIT (Event Information Table) in which information related to the program such as a program name, broadcast date and time, and a description of the program content is described. Etc. are also included and similarly time-division multiplexed.

  PAT, PMT, NIT, and CAT are called program specific information (PSI: Program Specific Information), and SDT, EIT, etc. are called program sequence information (SI: Service Information). Information included in PSI and SI is used to construct a program guide of, for example, EPG (Electronic Program Guide).

  In addition, a transmission form is defined in which a plurality of TSs are multiplexed and transmitted as a set, and a system is adopted in which TSs from different broadcasting stations are multiplexed and defined as one network and transmitted together with a network identification value. .

  SI includes all-station SI that transmits program information of all broadcasting stations that are broadcasting in the network simultaneously in all TSs in the network, and only information related to the broadcast-scheduled programs of its own station only in its own TS There is a station SI to transmit at. The all-station SI is transmitted for each network.

  Information transmitted by the all-station SI is limited to the minimum because the amount of information is limited. However, in the receiver, program information of a channel that is not received by the all-station SI is within the same network. Can be acquired.

  The EIT is retransmitted periodically. The period is subject to change, and minimum and maximum ranges are specified. By continuously receiving a channel of a program transmitted in a desired TS over a period of at least one cycle and acquiring the EIT as the all-station SI, it is possible to acquire program information in the network in which the channel exists.

  The period varies depending on the content of the information and may be very slow, but there is information that is in units of minutes. These signal formats are described in, for example, “ARIB TR-B15” and “ARIB TR-B14” documents as operation regulations for digital broadcasting.

  That is, the video / audio data constituting the program is transmitted in a flowing manner while being sequentially updated in real time, but some additional information data is periodically transmitted like EIT, Such data is repeatedly transmitted so that the same information can be provided to the user at any time during a certain period. In other words, the data is transmitted by the data carousel transmission system, and the television receiver receives and accumulates the sequentially transmitted data, and uses it after receiving all the data.

  In the data carousel transmission method, since data is repeatedly transmitted at a predetermined cycle, all necessary data can be acquired if a certain time corresponding to the cycle elapses whenever data acquisition starts. Is possible. On the other hand, in order to use data, in principle, it is a condition that reception of all data is completed.

  By the way, as a lot of information can be transmitted by the practical application of digital broadcasting, the number of programs has increased, and the function of the program table (EPG) that presents program information and the search of the program and the contents thereof are presented. Usefulness such as a genre search function that enables a user to easily select a program that the user wants to watch has increased.

  The program table is configured to display a program scheduled to be broadcast in a specific time zone from information stored in the receiver as a list for each channel. In the genre search, the user designates the genre classification of the program, and based on the genre classification, the corresponding program is narrowed down from all program information data stored in the receiver, and the program obtained as a result This is a function for displaying information.

  However, in a form in which multiple networks are broadcasted, if the program information is searched across all the networks or a desired plurality of networks, and the program content that matches the extraction conditions is to be presented, Since it is not possible to acquire information on a network that includes a TS that has not been received, each station SI receives and transmits one TS in each network again at the stage where the broadcast of the program being viewed ends. The operation of acquiring the EIT information must be executed for all networks to be selected.

  Specifically, first, a representative channel in one network is selected, and EIT information in that network is acquired and all information can be accumulated. After the acquisition is completed, the representative channel of the next network is selected, and the operation of continuing to select until all the EIT information is accumulated is performed for all the networks to be targeted.

  Therefore, it takes a maximum amount of time for the total EIT transmission period of each network before program information about all networks in the range in which information is desired to be obtained, which takes a considerable amount of time. Also, the EIT transmission cycle may be changed, and the time until completion cannot be specified.

  At this time, the user waits for a considerable period of time, and when there is a program that the user wants to watch, the acquisition of the program information must be interrupted.

  In the future, it has been decided that terrestrial analog broadcasting will be canceled in 2011 in television broadcasting, but until then, television terrestrial broadcasting is a mixture of analog broadcasting and digital broadcasting. Therefore, it is considered that a television receiver having a function capable of receiving both broadcasts is provided to the market.

  In addition, in a situation where analog terrestrial broadcasting and digital terrestrial broadcasting are mixed, in principle, both broadcasts broadcast programs with the same content, and they are receiving analog broadcasts and watching programs. In addition, it is possible to obtain program information by receiving a digital broadcast. In addition to viewing analog broadcasts, the state of not viewing digital broadcasts includes, for example, the state of viewing a program played on a DVD (Digital Versatile Disc). It is possible to acquire the program information by receiving.

  As described above, in a device capable of receiving a plurality of broadcasts including terrestrial digital broadcasts, program information is acquired when a digital broadcast is not viewed and a program obtained from another broadcast or medium is being viewed. However, it is possible to provide a user-friendly device by providing a program information acquisition process according to a user's request. However, such a receiving device has hitherto been practically used. It has not been.

Conventionally, for example, Patent Document 1 has been proposed to include a tuner for user and a tuner for acquiring program information, and to acquire and store program information with the tuner for acquiring program information. In this case, the tuner for acquiring program information is used only for that purpose and is inefficient. Also, the program information acquisition process is not efficient because it only switches and stores the channels sequentially.
Japanese Patent Laid-Open No. 2002-163849 (page 3, FIG. 2)

  As described above, there has been no receiving apparatus that can acquire program information economically and efficiently, and there is a strong demand for practical use thereof.

  The present invention has been made in consideration of the above points, and uses a device capable of receiving a digital terrestrial broadcast and using a signal provided by other than the digital broadcast. It is an object of the present invention to provide a broadcast receiving apparatus and a receiving method having a configuration that is economically wasteful by receiving a digital broadcast and acquiring program information in a state in which the program is not received.

  The broadcast receiving apparatus of the present invention includes a first receiving mode for outputting a video signal received by a receiving means for receiving a digital broadcast and a second receiving for outputting a video signal obtained by means other than the receiving means for the digital broadcast. Switching means for switching between modes, and additional information acquisition means for acquiring additional information from a digital broadcast signal received by the receiving means in a state in which the second receiving mode is being executed. .

  The broadcast receiving apparatus of the present invention includes a first receiving mode for outputting a video signal received by a receiving means for receiving a digital broadcast composed of a plurality of channels, and a video signal obtained by means other than the digital broadcast receiving means. The plurality of channels are selected in a predetermined order as switching means for switching between the second receiving form for outputting the digital broadcasting and the means for receiving the digital broadcast in a state where the second receiving form is selected. As described above, the control unit for determining the channel selection order and the additional information extraction unit for extracting the additional information from the broadcast signal of the selected channel are provided.

  The broadcast receiving apparatus of the present invention includes a first receiving unit that receives a digital broadcast and outputs a video signal, an additional information acquisition unit that acquires additional information from the received digital broadcast signal, and an analog broadcast. The second receiving means operates by the second receiving means for outputting the video signal, the switching means for selectively operating the first receiving means and the second receiving means, and the switching means. Control means for automatically receiving the digital broadcast by the first receiving means and acquiring the additional information by the additional information acquiring means in the state of being switched as described above. To do.

  The broadcast receiving apparatus of the present invention includes a digital broadcast receiving means for receiving a digital broadcast, a digital broadcast program signal output means for outputting a signal constituting a program received by the digital broadcast receiving means for viewing, and the digital Additional information acquisition means for acquiring additional information from the digital broadcast signal received by the broadcast receiving means, analog broadcast receiving means for receiving analog broadcast, and viewing the signals constituting the program received by the analog broadcast receiving means Analog broadcast program signal output means for outputting, switching means for selectively operating the digital broadcast reception means and digital broadcast program signal output means, the analog broadcast reception means and analog broadcast program signal output means, The analog broadcast receiving means and the analog broadcast program signal output means operate by the switching means. Control means for automatically operating the digital broadcast receiving means and the additional information acquisition means in a state where the additional information acquisition means acquires the additional information. To do.

  The broadcast receiving method of the present invention switches between a first receiving form for receiving a digital broadcast and outputting a video signal, and a second receiving form for outputting a video signal obtained by means other than the receiving means for the digital broadcast. And a step of receiving the digital broadcast signal and acquiring additional information in a state where the second reception mode is executed.

  The broadcast receiving method of the present invention is a first receiving mode for receiving a digital broadcast composed of a plurality of channels and outputting a video signal, and a first receiving mode for outputting a video signal obtained by means other than the digital broadcast receiving means. Switching means for switching between the two reception forms, a step of selecting a plurality of channels of the digital broadcast in a predetermined order in a state where the second reception form is selected, and And a step of extracting additional information from the broadcast signal.

  The broadcast receiving method of the present invention includes a step of selectively switching between an operation state of receiving a digital broadcast and outputting a video signal and an operation state of receiving an analog broadcast and outputting a video signal, and the analog broadcast is received. And receiving the digital broadcast and acquiring additional information multiplexed and transmitted in the digital broadcast in an operation state in which the video signal is being output.

  According to the present invention, the additional information is efficiently acquired by acquiring the additional information multiplexed and transmitted to the digital broadcast while viewing a program based on a signal provided other than the digital broadcast. And it will be able to be acquired reliably.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit configuration diagram showing an embodiment of a broadcast receiving apparatus of the present invention.

  In FIG. 1, a broadcast receiving apparatus 10 includes a VHF antenna input terminal 12 that receives a signal from a VHF (Very High Frequency) antenna 11 for receiving an analog terrestrial broadcast via a cable, and a UHF (digital terrestrial broadcast reception). Ultrahigh Frequency) UHF antenna input terminal 14 for receiving a signal from antenna 13 through a cable.

  The VHF antenna input terminal 12 is connected to the VHF tuner unit 15, and the broadcast radio wave caught by the VHF antenna 11 is supplied to the VHF tuner unit 15 as a signal. The VHF tuner unit 15 executes channel selection and processing for converting the received signal of the selected channel into an intermediate frequency signal.

  The UHF antenna input terminal 14 is connected to the UHF tuner unit 16, and the broadcast radio wave caught by the UHF antenna 13 is supplied to the UHF tuner unit 16 as a signal. The UHF tuner unit 16 performs channel selection, processing for converting the received signal of the selected channel into an intermediate frequency signal, and processing for converting the intermediate frequency signal into a digital signal.

  The channel selection operations of the VHF tuner unit 15 and the UHF tuner unit 16 are executed by a channel selection signal from the control unit 17. The control unit 17 controls and controls the functions and operations of the entire broadcast receiving apparatus 10, and is configured by, for example, a CPU (Central Processing Unit).

  Connected to the control unit 17 are an operation input unit 18 composed of a plurality of operation buttons that can be operated by the user, and a remote control light receiving unit 20 that receives a remote control signal from the remote controller 19. 10 to receive the signal for controlling.

  The output of the VHF tuner unit 15 is supplied to the analog demodulation unit 21 and converted into a baseband television signal. Among the baseband television signals output from the analog demodulation unit 21, the video signal is subjected to predetermined processing by the video signal processing unit 22, supplied to the display 24 via the video signal selection processing unit 23, and displayed. The

  The video signal selection processing unit 23 selects a received video signal of a digital broadcast or a video signal such as a program guide, performs predetermined processing, and supplies it to the display 24. Details will be described later. The audio signal is output as audio from the demodulator 21 via a processing unit (not shown) by an output unit such as a speaker, but is not directly related to the present invention, and thus detailed description thereof is omitted.

  The output from the UHF tuner unit 16 is supplied to a digital broadcasting signal demodulating unit 25, where OFDM (Orthogonal Frequency Division Multiplexing) demodulation, error correction, and descrambling processing as necessary are performed as a TS signal. Is output.

  The TS signal output from the demodulator 25 is supplied to the TS separator 26 where the video data, audio data and additional information constituting the program are separated under the control of the controller 17. Video data constituting the program is supplied to the MPEG decoder 27, where MPEG2 decoding processing is performed under the control of the control unit 17, converted into an uncompressed digital signal, and supplied to the graphic processing unit 28. The

  The graphic processing unit 28 performs predetermined processing on the digital video signal and supplies the digital video signal to the video signal selection processing unit 23, where it is converted into a standard format television signal and supplied to the display 24 for display.

  Note that the audio data is also converted into an uncompressed digital signal and output from the MPEG decoder 27, subjected to predetermined processing by a processing unit (not shown), converted into an analog signal, and output through an output means such as a speaker. The details are omitted.

  Furthermore, program information is also separated from the TS separation unit 26 under the control of the control unit 17 and is acquired by the program information acquisition unit 29. The acquired program information is stored in the memory 30 via the control unit 17. Further, the program information stored in the memory 30 is read out under the control of the control unit 17 and is supplied from the program information acquisition unit 29 to the program table creation unit 31 where the program in GUI (Graphical User Interface) format is provided. It is constructed as a table and supplied to the graphic processing unit 28.

  The graphic processing unit 28 outputs the video data from the MPEG decoder 27 as it is under the control of the control unit 17, superimposes and outputs the program table from the program table creation unit 31 on the video data, or the program A function of outputting or switching the program table from the table creation unit 31 as it is is provided.

  As a result, the program guide is displayed on the display 24 alone or superimposed on the digital video signal.

  Further, the broadcast receiving apparatus 10 includes external input terminals 33 and 34 to which a reproduction signal from, for example, a VTR (Videotape Recorder) or a DVD is supplied. The external input terminal 33 is an analog video signal input terminal and is connected to the video signal processing unit 22. The external input terminal 34 is an input terminal for a digital video signal and is connected to the graphic processing unit 28.

  For example, when viewing a program based on an analog signal from an external VTR (not shown), the control unit 17 controls the video signal processing unit 22 to select an analog video signal supplied to the external input terminal 33 and select a video signal. The processing unit 23 is made to derive. At the same time, the video signal selection processing unit 23 is controlled to supply the video signal supplied from the video signal processing unit 22 to the display 24 for display.

  Similarly, for example, when viewing a program using a digital signal from a DVD (not shown), the control unit 17 controls the graphic processing unit 28 to select a digital video signal supplied to the external input terminal 34 and display the video. The signal selection processing unit 23 derives it. At the same time, the video signal selection processing unit 23 is controlled to supply the video signal supplied from the graphic processing unit 28 to the display 24 for display. The external input signal naturally includes an audio signal, but is omitted here for easy understanding.

  FIG. 2 is a diagram specifically showing the configuration of the buttons of the remote controller 19 shown in FIG. As shown in FIG. 2, the remote controller 19 includes a broadcast selection button group 19a for selecting a broadcast and a numeric button group 19b operated when directly selecting a channel.

  The remote controller 19 also displays a “program guide button” 19c for transmitting a remote control signal for displaying the program guide, a “channel selection order button” 19d for executing the setting of the channel selection order, and a screen for setting. It has a “setting button” 19e to be displayed. Furthermore, a “cursor button” 19f for selecting the setting item displayed on the screen with the cursor, a “decision button” 19g for registering the item selected with the cursor button 19f, and the registered setting item are deleted. A “delete button” 19h for viewing, an “video button” 19i for viewing an external input signal, and a “power button” 19j for turning on / off the power of the broadcast receiving apparatus 10.

  Now, when the power button 19j of the remote controller 19 is operated to turn on the power of the receiving device 10, the receiving device 10 is set to receive an analog broadcast. That is, the control unit 17 gives a channel selection signal to the VHF tuner unit 15 to execute channel selection of a predetermined channel, and the video based on the video signal output from the video signal processing unit 22 is displayed on the display 24. The video signal selection processing unit 23 is controlled as described above. Channel selection after power-on is performed by operating the numeric button group 19b of the remote controller 19.

  In a state where an analog broadcast program is being viewed, the control unit 17 drives each necessary circuit unit in the broadcast receiving apparatus 10 in order to execute a program information acquisition process. That is, the UHF tuner unit 16, the demodulation unit 25, the TS separation unit 29, and the program information acquisition unit 29 are operated to select a predetermined channel (for example, the channel having the lowest frequency) of digital terrestrial broadcasting first. .

  Then, the program information multiplexed and transmitted on the broadcast signal of the channel is separated by the TS separation unit 26, the program information is obtained by the program information obtaining unit 29 and stored in the memory 30. Next, channel switching (switching to the channel with the next lowest frequency) is performed, and program information is acquired and stored in the memory 30 in the same manner. As described above, acquisition of program information for all channels and storage processing in the memory 30 are completed, whereby acquisition of program information is completed.

  In terrestrial digital broadcasting, as described above, the concept of network is defined, and if the same network is used even if the channels are different, the same program information may be transmitted. Therefore, if a channel for transmitting the same program information is known in advance, it is possible to omit acquisition of program information for that channel.

  When the user operates the “program guide button” 19 c of the remote controller 19 after acquiring the terrestrial digital broadcast program information as described above, the control unit 17 receives the remote control signal received via the remote control light receiving unit 20. And necessary circuit portions in the apparatus 10 are driven to display the program guide. That is, program information is read out from the memory 30, and a program guide is created by the program guide creation unit 31 and displayed on the display 24 via the graphic processing unit 28 and the video signal selection processing unit 23.

  The user selects a desired program from the displayed program table by using the cursor button 19f and the decision button 19g of the remote controller 19, and if the selected program is a broadcast program, the program is viewed. Channel switching and other actions are performed as described. Further, if the selected program is a program to be broadcast in the future, a recording reservation or a viewing reservation can be made.

  When switching from the state of viewing an analog broadcast to the state of viewing a digital broadcast, the “digital broadcast” button of the broadcast selection button group 19a of the remote controller 19 is operated. Thereby, the control unit 17 drives each unit of the apparatus 10 so that the digital broadcast can be viewed. That is, the UHF tuner unit 16, the demodulation unit 25, the TS separation unit 26, and the MPEG decoder 27 are operated, and the graphic processing unit 28 is controlled to select the video data from the MPEG decoder 27, and the video signal selection processing unit 23 is controlled so that the signal from the graphic processor 28 is selected and displayed on the display 24.

  At the same time, the control unit 17 operates the TS separation unit 26 and the program information acquisition unit 29 to acquire program information included in the channel received by the UHF tuner unit 16 and writes it in the memory 30.

  In the state of receiving the digital broadcast, only the program information of the selected channel can be acquired. However, if new information can be acquired, the program information stored in the memory 30 is updated even if only the channel is acquired. It is not wasteful to leave.

  Further, when viewing signals supplied to the external input terminals 33 and 34, the “video button” 19i of the remote controller 19 is operated. Thereby, the control unit 17 decodes the remote control signal received via the remote control light receiving unit 20, and for example, in order to view the signal supplied to the external input terminal 33, the video signal processing unit 22 and the video signal selection The processing unit 23 is controlled.

  When the “video button” 19i of the remote controller 19 is operated once more, the signal supplied to the external input terminal 34 is set to be viewed. That is, the control unit 17 controls the graphic processing unit 28 and the video signal selection processing unit 23 so that the signal supplied to the external input terminal 34 is displayed on the display 24.

  In the state where the signal supplied to the external input terminals 33 and 34 is viewed, the UHF tuner unit 16 and the like are driven to acquire the program information of the digital broadcast in the same manner as the state where the analog broadcast is received. It is possible.

  FIG. 3 is a flowchart for explaining the operation of the apparatus shown in FIG. In FIG. 3, the process starts in step S301. In step S302, it is determined whether or not a terrestrial analog broadcast program is being viewed.

  When a terrestrial analog broadcast program is being viewed, the UHF tuner unit 16 selects a terrestrial digital broadcast channel in step S303, and the process proceeds to step S304 to acquire program information. Next, in step S305, it is determined whether or not switching has been performed to view a digital terrestrial broadcast program. If it is determined that the analog broadcast is still being viewed, the UHF tuner unit 16 is determined in step S306. The selected channel is updated, and the process returns to step S303.

  If it is determined in step S305 that the terrestrial digital digital broadcast program has been switched to view, the program information multiplexed and transmitted to the terrestrial digital broadcast program being acquired is acquired in step S307. Then, the process ends in step S308.

  If it is determined in step S302 that the terrestrial analog broadcast program is not being viewed, the process ends.

  In the apparatus shown in FIG. 1, when the signal supplied to the external input terminals 33 and 34 is viewed, the UHF tuner unit 16 can be freely used as in the state where the terrestrial analog broadcast is viewed. Thus, it is possible to obtain program information. The overall operation including the state of viewing the signals from the external input terminals 33 and 34 will be described based on the flowchart shown in FIG.

  In FIG. 4, the process starts in step S401, and in step S402, it is determined whether or not a terrestrial analog broadcast program is being viewed.

  If a terrestrial analog broadcast program is being viewed, the UHF tuner unit 16 selects a terrestrial digital broadcast channel in step S403, and the process proceeds to step S404 to acquire program information. Next, in step S405, it is determined whether or not switching has been performed to view the digital terrestrial broadcast program. If it is determined that the analog broadcast is still being viewed, the UHF tuner unit 16 is determined in step S406. The selected channel is updated, and the process returns to step S403.

  If it is determined in step S405 that the terrestrial digital digital broadcast program has been switched to view, the program information multiplexed and transmitted to the terrestrial digital broadcast program being acquired is acquired in step S407. Then, in step S408, it is determined whether or not the power of the receiving apparatus 10 is turned off. If the power is still on, the process returns to step S402 and it is determined that the power is turned off. Then, the process ends in step S409.

  If it is determined in step S402 that the terrestrial analog broadcast program is not viewed, it is determined in step S410 whether or not the external input signal is being viewed, and the external input signal is viewed. If the program has been performed, the process proceeds to step S403 to shift to a process of acquiring program information while searching for a digital broadcast channel.

  If it is determined in step S410 that the external input signal is not being viewed, it is determined that the digital broadcast is being viewed, and the process proceeds to step S407 to be multiplexed with the digital broadcast being viewed. Get program information.

  According to the broadcast receiving apparatus 10 shown in FIG. 1 described above, since the program information multiplexed on the digital broadcast is acquired when the digital broadcast program is not viewed, it is efficiently and reliably performed. Program information can be acquired.

  Further, in the apparatus 10 described above, it has been described that the program information is automatically acquired in the state of viewing an analog broadcast program and the state of viewing an external input signal program. It is also possible to allow the user to select whether or not to acquire the password, and such an embodiment will be described with reference to FIGS.

  FIG. 5 is a circuit block diagram of a receiving apparatus having a function for allowing a user to set in advance whether or not to execute program information acquisition processing. 5, the same circuit components as those of the apparatus 10 shown in FIG.

  5, the broadcast receiving device 50 is different from the device 10 shown in FIG. 1 in that a setting screen creating unit 51 is provided. The setting screen creation unit 51 generates a video signal for display for setting the program information acquisition function in the GUI format. An example of the setting screen is shown in FIG. In FIG. 6, the display 24 displays a message “Do you want to acquire program information for each channel of terrestrial digital broadcast when viewing terrestrial analog broadcast?” "And" No "selection items are displayed.

  When the user operates the “setting button” 19e of the remote controller 19, the control unit 17 decodes the remote control signal received by the remote control light receiving unit 20, controls the setting screen creation unit 51, and performs the setting shown in FIG. Output the video signal that composes the screen. The video signal is supplied to the display via the graphic processing unit 28 and the video signal selection processing unit 23 and displayed. The setting screen shown in FIG. 6 is configured in a GUI format, and the user operates the cursor button 19f and the determination button 19g of the remote controller 19 to select “Yes” or “No” displayed on the screen. The selected result is stored in the memory 30.

  If “Yes” is selected and digital broadcast program information is set to be acquired when viewing an analog broadcast, the UHF tuner unit 16 and the like are displayed when viewing the analog broadcast program, as described with reference to the apparatus 10 in FIG. The program information acquisition circuit section is driven, and the program information of each channel of the digital broadcast is automatically acquired and stored in the memory 30.

  If “No” is selected and digital broadcast program information is set not to be acquired when viewing analog broadcast, the UHF tuner unit 16 and other circuit information acquisition circuits are driven when viewing analog broadcast. No program information is acquired.

  FIG. 7 is a flowchart for explaining the operation of receiving apparatus 50 shown in FIG. In FIG. 7, the process starts in step S701. In step S702, the “setting button” 19e of the remote controller 19 is pressed. Next, in step S703, the program information automatic acquisition setting screen is displayed, and in step S704, it is determined whether or not to set the program information automatic acquisition function.

  If it is determined in step S704 that the program information automatic acquisition function has been set, it is determined in step S705 whether or not the terrestrial analog broadcast is being viewed, and the terrestrial analog broadcast program is viewed. If so, the channel of the terrestrial digital broadcasting is selected by the UHF tuner unit 16 in step S706, and the program information is acquired in step S707. Next, in step S708, it is determined whether or not switching has been performed to view the terrestrial digital broadcast program. If it is determined that the analog broadcast is still being viewed, the UHF tuner unit 16 in step S709. The channel selection channel is updated, and the process returns to step S706.

  If it is determined in step S708 that the terrestrial digital broadcast program has been switched to view, program information multiplexed and transmitted to the terrestrial digital broadcast program being acquired is acquired in step S710. In step S711, the process ends.

  If it is determined in step S704 that the program information automatic acquisition function has not been set, and if it is determined in step S705 that the terrestrial analog broadcast is not viewed, the process ends in step S711.

  In the broadcast receiving apparatus 50 of FIG. 5, it is set whether or not the program information is automatically acquired when viewing the analog broadcast. However, in addition to viewing the analog broadcast, external input is performed. When viewing the signal supplied to the terminals 33 and 34, it may be configured to set whether to automatically acquire the program information.

  As described above, in the receiving apparatus 50 shown in FIG. 5, since it is possible to set whether to automatically acquire program information, if the user determines that it is unnecessary, automatic acquisition of program information is possible. Can be stopped.

  FIG. 8 is a circuit block diagram showing still another embodiment of the broadcast receiving apparatus of the present invention. 8, the same reference numerals are given to the same circuit components as those in FIG. 1, and detailed description thereof will be omitted.

  The receiving device 80 shown in FIG. 8 is different from the receiving device 10 of FIG. 1 in that a tuning order determining unit 81 is provided. That is, the receiving device 80 determines the channel selection order of the UHF tuner unit 16 according to an instruction from the channel selection order determination unit 81 when acquiring program information.

  The program information acquired by the program information acquisition unit 29 is supplied to the channel selection order determination unit 81 via the control unit 17. From the program information supplied to the channel selection order determination unit 81, the information amount of the program information for each channel is specified, the channels are specified in ascending order of the information amount of the program information, and the channel selection order is determined.

  As a result, digital broadcast program information is sequentially acquired from a channel with a small amount of information, so that program information can be acquired efficiently.

  For example, if acquisition of program information for all channels is not completed before switching from analog broadcast viewing to digital broadcast viewing, program information acquisition will be interrupted, but the amount of information is small By sequentially acquiring from the channel, the number of channels from which program information can be acquired can be increased.

  FIG. 9 is a flowchart for explaining the operation of the receiving apparatus of FIG. In FIG. 9, the process starts in step S901, and in step S902, it is determined whether or not a terrestrial analog broadcast program is being viewed.

  If a terrestrial analog broadcast program is being viewed, the channel selection order of the terrestrial digital broadcast is set to a channel order with a small amount of program information in step S903, and the UHF tuner unit 16 performs terrestrial digital broadcast in step S904. Select a channel.

  Next, in step S905, program information is acquired, and in step S906, it is determined whether or not switching has been performed to view the digital terrestrial broadcast program, and it is determined that the analog broadcast is still being viewed. Then, the channel selection channel of the UHF tuner section 16 is updated in step S907, and the process returns to step S904.

  If it is determined in step S906 that the terrestrial digital broadcast program has been switched to view, the program information multiplexed and transmitted to the terrestrial digital broadcast program being acquired is acquired in step S908. In step S909, the process ends.

  If it is determined in step S902 that the terrestrial analog broadcast program is not being viewed, the process ends.

  In the receiving apparatus 80 of FIG. 8, the channel selection order for acquiring the program information is the channel order with a small program information amount. It is possible to set the channel order in which the viewing frequency is high, the channel order in which the viewing time is long, or the acquired program information in the old channel order.

  According to the receiving apparatus 80 shown in FIG. 8, the order of channel selection when acquiring program information is determined according to the amount of program information or the actual reception status, so that the program information can be more efficiently obtained. It is something that can be acquired.

  In the above embodiment, the receiving apparatus configured to acquire program information has been described. However, the present invention can also be applied to the case where additional information other than program information is acquired and used. . In addition, the present invention can be implemented in various ways without changing the gist thereof.

The circuit block diagram which shows one Embodiment of the broadcast receiver which concerns on this invention. The block diagram of the remote controller applied to the apparatus shown in FIG. The flowchart for demonstrating operation | movement of the apparatus shown in FIG. The flowchart for demonstrating other operation | movement of the apparatus shown in FIG. The circuit block diagram which shows other embodiment of the broadcast receiver which concerns on this invention. The block diagram for demonstrating operation | movement of the apparatus shown in FIG. The flowchart for demonstrating operation | movement of the apparatus shown in FIG. The circuit block diagram which shows other embodiment of the broadcast receiver which concerns on this invention. The flowchart for demonstrating operation | movement of the apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 50, 80 ... Broadcast receiving apparatus 11 ... VHF antenna 12 ... VHF antenna input terminal 13 ... UHF antenna 14 ... UHF antenna input terminal 15 ... VHF tuner part 16 ... UHF tuner part

Claims (1)

A first receiving form for outputting a video signal received by a receiving means for receiving a digital broadcast composed of a plurality of channels, and a second receiving form for outputting a video signal obtained by means other than the receiving means for the digital broadcast Switching means for switching between,
First additional information extracting means for extracting additional information from the broadcast signals of the plurality of channels;
Storage means for storing additional information of each channel extracted by the first additional information extracting means;
In the state where the second reception mode is selected, the channel selection order of the reception unit that receives the digital broadcast so that each channel is selected in ascending order of the information amount of the additional information stored in the storage unit Control means for determining,
Second additional information extracting means for extracting additional information from the broadcast signal of each channel in the channel selection order determined by the control means;
A broadcast receiving apparatus comprising:

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