JP4458990B2 - Digital data receiver - Google Patents

Description

  The present invention relates to a digital data receiver such as a digital broadcast receiver that searches a program of a genre preset by a user and outputs broadcast data of the searched program.

  In a digital broadcast receiving apparatus, there is known a digital broadcast receiving apparatus capable of searching for and receiving a channel having a predetermined genre from among digital broadcasts added with a plurality of genres for each channel. (For example, patent document 1).

  Also, in the digital broadcast receiving apparatus, for example, the display screen is divided into four, or divided into a large screen, a medium screen, and a small screen and displayed at one time, depending on the number of display screens and display forms set by the user. It is known to display received broadcast data (for example, Patent Document 2).

Japanese Patent Laid-Open No. 2002-77759 (page 2, FIG. 2) Japanese Patent Publication No. 8-265662 (FIGS. 4 and 5)

  The genre of the program that the user wants to watch varies greatly depending on the situation such as the day of the week, the time zone, and the region. Therefore, as in the past, even if only the genre of the program to be displayed with priority is set, there is a problem that the broadcast data of the program meeting the user's wish is not always displayed.

  In addition, when a digital data receiver is installed in a vehicle, if the vehicle moves to an area where the channel, program content, broadcast station, etc. are different, the preset content becomes meaningless. .

  In addition, when a digital data receiver is installed in a vehicle, depending on the positional relationship between the broadcasting station and the vehicle, a program with a good reception electric field and a program with a different reception field are mixed, and the broadcast data of the program is set according to the preset contents. There was a problem that proper display could not be performed even if the message was output.

  Accordingly, an object of the present invention is to provide a digital data receiver capable of presetting a program desired by a user in detail.

  In addition, the present invention provides a digital data receiver in which a digital data receiver is installed in a vehicle and a program desired by a user can be set in advance even when the vehicle moves across different broadcasting regions. The purpose is to provide.

  Another object of the present invention is to provide a digital data receiver capable of presetting a program desired by a user in consideration of the state of a received electric field.

  In order to solve the above problems, a digital data receiver according to the present invention obtains program information, a receiving unit for receiving broadcast data, a setting unit for setting a priority program genre for each predetermined condition, and program information A program information acquisition unit for performing a search for a program corresponding to the priority program genre for each predetermined condition set by the user from the program information and outputting broadcast data of the searched priority program And a control unit for controlling. The program can be displayed according to detailed user settings.

  In order to solve the above problems, an in-vehicle digital data receiver according to the present invention includes a receiving unit for receiving broadcast data, a setting unit for setting a priority program genre for each region, Among the program information acquisition unit for acquiring the program information, the position information acquisition unit for acquiring the vehicle position information, and the program information of the region where the vehicle is currently located based on the program information and the location information for each region And a control unit that controls the receiving unit to search for a program corresponding to the priority program genre set for each region and output broadcast data of the searched program. Even when the vehicle has moved to an area where the channel, the program content, the broadcasting station, etc. are different, a program having a content set in advance by the user can be searched and displayed.

Furthermore, in order to solve the above problems, a digital data receiver according to the present invention includes a receiving unit for receiving broadcast data in a plurality of receiving channels, a setting unit for setting a priority program genre, and program information. When a program corresponding to the set priority program genre is searched while sequentially updating the reception channel, and a program matching the priority program genre is found, And a control unit that controls the receiving unit so as to output broadcast data. While performing the channel scan, it is configured to sequentially output programs that match the genre set by the user.

Furthermore, in order to solve the above-described problem, a digital data receiver according to the present invention includes a receiving unit for receiving broadcast data in a plurality of receiving channels, and a received electric field for detecting the state of the received electric field of the broadcast data. A detection unit, a program information acquisition unit for acquiring program information, and a reception electric field detection unit that detects the state of the reception electric field of the broadcast data for each reception channel updated by the reception electric field detection unit while sequentially updating the reception channel; A control unit that controls the receiving unit so as to output the broadcast data of the updated receiving channel when it is favorable. While performing channel scanning, it was configured to sequentially output programs with good reception electric fields.
Furthermore, in order to solve the above-described problem, a digital data receiver according to the present invention acquires a receiving unit that receives broadcast data, a setting unit that sets a priority program genre in association with a predetermined condition, and obtains program information. A program information acquisition unit and a program that matches a priority program genre associated with a predetermined condition satisfying current information of the digital data receiver are searched from the program information, and information related to the searched program is displayed on the display. And a control unit that controls to output .

  According to the digital data receiver of the present invention, it is possible to preset in advance a program desired by the user.

  Moreover, according to the digital data receiver of the present invention, it is possible to set a program desired by the user in advance even when the vehicle moves across the broadcasting district.

  Furthermore, according to the digital data receiver of the present invention, it is possible to preset a program desired by the user in consideration of the state of the received electric field.

  A digital data (broadcast) receiver according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of a digital data receiver 10 according to the present invention. In FIG. 1, a digital data receiver 10 includes an RF baseband processing unit 12, an OFDM demodulation processing unit 14, a TS decoding unit 16, an audio decoder 18, a first video decoder 20, a second video decoder 22, and a video switching processing unit 24. , A presentation processing unit 26, a delay circuit 30, a D / A converter 31, a storage unit 32, a control unit 34, an I / O 36, a system bus 38, and the like. The digital data receiver 10 is connected to an antenna 40, a vehicle-mounted display 50 and a speaker 60, a remote controller 70, and a navigation device 80.

  The digital data receiver 10 is controlled by operation inputs from various input operation devices (buttons, touch panel, etc.) provided on the remote controller 70 and / or the display 50. Further, the digital data receiver 10 is configured to receive at least vehicle position information from a GPS information receiving unit 82 provided in the navigation device 80. The digital data receiver 10 may be configured to include any one or more of the antenna 40, the in-vehicle display 50 and the speaker 60, the remote controller 70, and the navigation device 80 described above.

  The RF baseband processing unit 12 receives a received broadcast wave from the antenna 40, extracts an OFDM (Orthogonal Frequency Division Multiplexing) signal existing in a desired band, and performs level adjustment by a built-in AGC (Auto Gain Control) circuit To the OFDM demodulation processing unit 14. The OFDM signal is controlled to a desired level by the AGC signal.

  The OFDM demodulation processing unit 14 demodulates the digitally modulated OFDM signal, performs error correction processing, and the like, and sends a TS (transport stream) packet signal to the TS decoding unit 16. At the same time, the OFDM demodulation processing unit 14 sends an error signal (transport error signal in the header portion of the packet) to the control unit 34 via the system bus 38 in order to determine the reception electric field state.

  The TS decoding unit 16 separates the TS packet signal into audio data, first video data, and second video data, and sends them to the audio decoder 18, the first video decoder 20, and the second video decoder 22, respectively. Here, the first video data is encoded data (hereinafter, referred to as “weak hierarchical data”) encoded by the MPEG2 system and corresponding to home-use broadcasting for general public. The second video data corresponds to mobile broadcast for mobile reception, and is MPEG4 or H.264. This is encoded data (hereinafter referred to as “strong hierarchical data”) encoded by the H.264 system (one of the video compression systems also known as MPEG-4 Part 10).

  The TS decoding unit 16 simultaneously obtains EPG (electronic program guide) data from the TS packet signal. The EPG data is sent to the storage unit 32 via the system bus 38 and stored therein.

  In the OFDM system, since three types of signal carriers can be carried simultaneously, a maximum of three types of video data can be separated from the TS decoding unit 16, but in this embodiment, the MPEG2 system and the MPEG4 system or H . Two types of encoded data encoded with the H.264 system are handled. However, the present invention is not limited to this, and a third video decoder can be provided.

  The audio data from the coder 18 in the audio is subjected to predetermined delay processing in the delay circuit 30 under the control of the control unit 34, and after being synchronized with the video data, is converted into an analog signal by the D / A converter 31. And output from the speaker 60.

  The video data from the first and second video decoders 20 and 22 is selected by the video switching processing unit 24 under the control of the control unit 34 and displayed on the display 50 via the presentation processing unit 26. .

  The control unit 34 includes a CPU, a RAM, a ROM, and the like, operates according to a program installed in advance, and controls each element connected to the system bus 38. Further, the control unit 34 receives an error signal for each layer from the OFDM demodulation processing unit 14 and determines the state of the received electric field for each layer based on the error signal. In the present embodiment, the control unit 34 determines that the received electric field is defective when a predetermined number or more (for example, 6 or more) error signals are received for a predetermined number (for example, 1000) of TS packet signals. Further, the control unit 34 can control the video switching processing unit 24 and the like based on the state of the received electric field, and can perform switching control of video data and audio data.

  The video data and audio data in the weak layer are encoded data encoded by the MPEG2 system, and are high quality, but have a high bit rate, so that the noise resistance is weak and the distance from the broadcasting station is long. Then, good reception may be difficult. On the other hand, the video data and audio data in the strong hierarchy are MPEG4 or H.264. Because it is based on encoded data encoded by the H.264 system and has a lower bit rate than the MPEG2 system, it has high noise resistance and can be received well even when the distance from the broadcasting station is longer. It becomes.

  The presentation processing unit 28 is a processing unit for displaying the selected video data of the weak hierarchy or strong hierarchy in conformity with the display 50 (800 × 480 pixels), and is a VRAM for temporarily storing the video data And an arithmetic processing unit for performing arithmetic processing of video data.

  FIG. 2 shows an example of a setting screen 100 for setting a program desired by the user. The setting screen 100 is displayed on the display screen of the display 50 and a setting input operation is performed by the remote controller 70. The function buttons F1 to F8 (52) and the power ON button 54 shown in FIG. 2 are hard switches, and a registration button 110, a change button 111, a return button 112, and a cancel button displayed on the display screen of the display 50. Reference numeral 113 denotes a soft switch that can be input by a transparent touch panel provided on the display screen of the display 50.

  On the setting screen 100, priority 101 is set, and a user-desired program genre 109 is preset for each user name 102, region 103, date 104, day 105, time 106, time zone 107 and / or channel 108. be able to. Note that a plurality of priority orders 101 (for example, priority orders 1 to 3) can be set.

  A region 103 indicates a region where the channel, program content, broadcasting station, and the like match. For example, the region 103 in Japan is divided into 31 locations. The storage unit 32 stores in advance regional information obtained by dividing the whole of Japan into 31 locations, and a vehicle on which the digital data receiver 10 is mounted is based on the vehicle location information from the GPS information reception unit 82. Therefore, the control unit 34 can detect which area is currently present.

  The priority program information input using the setting screen 100 shown in FIG. 2 is stored in the storage unit 32 by the control unit 34 when the registration switch 110 is turned on.

  FIG. 3A is a diagram showing an example of the current information of the digital data receiver 10, and FIG. 3B is a diagram showing an example of EPG data in the acquired area (Kanto 1). The current information of the digital data receiver 10 includes current area information 301, date information 302, day information 303, time information 304, and time zone information 305. As described above, the current area information 301 controls in which area the vehicle on which the digital data receiver 10 is mounted currently exists based on the position information of the vehicle from the GPS information receiving unit 82. This is a result detected by the unit 34.

  The EPG data acquired from the TS decode processing unit 16 includes channel No information 301, program genre information 311, program name information 313, broadcast start time information 313, broadcast end time information 314, and the like. 3A and 3B are examples of the data configuration, and various modifications can be made.

  FIG. 4 shows an example of a processing flow for displaying a program based on user settings.

  First, from each broadcasting station, weak hierarchical data based on encoded data encoded by the MPEG2 system, MPEG4 system or H.264. A broadcast program having the same content as the strong hierarchical data by the encoded data encoded by the H.264 system is hierarchically transmitted in the same broadcast channel, and the digital data receiver 10 is turned on. The broadcast data is ready to be received, the current information of the digital data receiver 10 is as shown in FIG. 3 (a), and the acquired EPG data is as shown in FIG. 3 (b). It is assumed that the set priority program information is only data of priority order 1 shown in FIG. 7A (S401).

  Next, the control unit 34 determines whether or not the TV mode selection switch is turned on (S402). The TV mode selection switch is a switch for using the digital data receiver 10 as a digital broadcast receiver. For example, one of the function keys F1 to F8 in FIG. 2 can be assigned.

  When the TV mode selection switch is turned on in S402, the control unit 34 acquires EPG data (see FIG. 3B) from the storage unit 32 (S403).

  Next, the control unit 34 acquires priority program information (see FIG. 7A) set by the user from the storage unit 32 (S404).

  Next, the control unit 34 searches for EPG data based on the priority program information set by the user (S405), and determines whether there is a matching priority program (S406). As a result of the search, if there is no matching priority program, a predesignated channel (for example, channel No. 1) is selected and the broadcast data is displayed on the display 50 (S412), and the series of procedures is terminated. .

  If there is a matching priority program in S406, the control unit 34 next determines whether there are a plurality of matching priority programs (S407).

  When one priority program is searched as a result of the search, the control unit 34 controls the RF baseband processing unit 12 and the like to display the searched priority program on the display 50 (S408). End the procedure.

  If a plurality of priority programs are found as a result of the search, the control unit 34 causes the channel numbers and program names of the plurality of programs to be simultaneously displayed on the display screen of the display 50 (S409). For example, when the user setting is FIG. 7A (Friday, PM7 to 9 time zone, sport genre is priority 1), channel No. is set according to the program genre 311 of FIG. 4 and channel no. 8 is priority 1. An example in which two programs are displayed simultaneously is shown in FIG.

Next, the control unit 34 receives a selection signal as to which program to select (S410), displays the selected program on the display 50 (S411), and ends a series of procedures.
The selection signal is transmitted, for example, by a soft switch 121 for selecting channel 4 and a soft switch 131 for selecting channel 8 shown in FIG.

  As described above, in the processing flow shown in FIG. 4, a program can be automatically searched and displayed according to the priority program information shown in FIG. 7A input using the setting screen 100 shown in FIG. It has become possible.

  FIG. 6 shows another example of a processing flow for displaying a program based on user settings.

  First, from each broadcasting station, weak hierarchical data based on encoded data encoded by the MPEG2 system, MPEG4 system or H.264. A broadcast program having the same content as the strong hierarchical data by the encoded data encoded by the H.264 system is hierarchically transmitted in the same broadcast channel, and the digital data receiver 10 is turned on. The broadcast data is ready to be received, the current information of the digital data receiver 10 is as shown in FIG. 3 (a), and the acquired EPG data is as shown in FIG. 3 (b). The set priority program information is assumed to be data of priority order 1 and priority order 2 shown in FIG. 7B (S601).

  Next, the control unit 34 determines whether or not the “scan switch” is turned on (S602). The “scan switch” is a switch for sequentially automatically updating the channels one by one. For example, one of the function switches F1 to F8 shown in FIG. 2 can be assigned to the “scan switch”. .

  Next, the control unit 34 acquires priority program information (see FIG. 7B) from the storage unit 32 (S603).

  Next, the control unit 34 sets N = 1 (S604), and acquires the program information of channel 1 from the EPG data (see FIG. 3B) stored in the storage unit 32 (S605).

  Next, the control unit 34 determines whether or not channel 1 is a program of a genre of priority 1 set by the user (S606), and if so, displays the program on the display 50 for 5 seconds. Control (S607), otherwise proceed to S608.

  Next, the control unit 34 determines whether or not the channel has made a round (S608), and if it has not made a round, sets N = N + 1 (S609) and returns to S605 again. In this way, it is determined whether or not all channels are genres corresponding to the priority order 1 set by the user. For example, in the case of the user setting shown in FIG. 7B and the EPG data shown in FIG. 3B, channel 4 (baseball broadcast) is first selected and displayed for 5 seconds, and then channel 8 ( (Soccer) is selected and displayed for 5 seconds. Note that the channel is incremented by 1 by setting N = N + 1 in S609, but if a channel that does not exist in the area is known from the beginning, that number is skipped. Can do.

  When it is determined whether or not the program is a genre corresponding to priority 1 for all channels, the process proceeds from S608 to S610, and the same procedure is repeated for priority 2 in the future (S610 to S615). For example, in the case of the user setting shown in FIG. 7B and the EPG data shown in FIG. 3B, channel 1 (ΔΔ news) is first selected and displayed for 5 seconds, and then channel 13 (World News) is selected and displayed for 5 seconds. Note that the channel is incremented by 1 by setting N = N + 1 in S615, but if a channel that does not exist in the area is known from the beginning, that number is skipped. Can do.

  When it is determined whether or not all channels are programs of a genre corresponding to priority 2, the process proceeds from S614 to S616, and the state of the received electric field is determined for each channel.

  Next, the control unit 34 sets N = 1 (S616), and determines the state of the received electric field of the strong layer and the weak layer for the channel 1 based on the error signal received from the OFDM demodulation processing unit 14 (S617). , S618). When the received electric field of the strong hierarchy or the weak hierarchy is good, the control unit 34 displays the program on the display 50 for 5 seconds (S619). When the received electric field is good in both the strong hierarchy and the weak hierarchy, it is preferable to control the video switching processing unit 24 and the like so as to select the weak hierarchy. If any of the received electric fields in the strong hierarchy and the weak hierarchy is bad, no display is performed and the process proceeds to S620.

  Next, the control unit 34 determines whether or not the channel has made a round (S620), and if it has not made a round, sets N = N + 1 (S621), and returns to S617 again. In this way, it is determined whether or not the received electric field is good for all the channels, and the channels with good received electric field in the strong layer or weak layer are displayed on the display 50 for 5 seconds. Note that the channel is incremented by 1 by setting N = N + 1 in S621, but if a channel that does not exist in the area is known from the beginning, that number is skipped. Can do.

  If it is determined in S620 that the channel has gone around, the series of procedures is terminated.

  In this way, in the first channel scan, the programs of the genre with the priority order 1 set by the user are searched and displayed every 5 seconds, and in the second order channel scan, the programs of the genre with the priority order 2 set by the user are searched. A program is searched and displayed every 5 seconds, and in the third channel scan, a program of a channel having a good reception electric field is searched and displayed every 5 seconds.

  In the processing flow of FIG. 6, channel scanning is performed in two orders for priority order 1 and priority order 2, but when only priority order 1 is set, channel scanning for priority order 2 is skipped. Is preferred. On the contrary, if the priority order 3 is set, it is preferable to add a channel scan for the priority order 3.

  In the processing flow of FIG. 6, channel scanning for displaying a channel with a good reception state (for example, high electric field strength) is performed after channel scanning of priority, but a channel for sequentially displaying channels with a good reception electric field. It is also possible to perform scanning alone. Also, with regard to priority channel scanning, it is also possible to display a channel in which the reception state is good in order, and then sequentially display the rest of the priority. Furthermore, the first and / or second channel scan and the third channel scan of the processing flow of FIG. 6 are simultaneously performed, and only broadcast data of a program that has a good reception electric field and matches the priority set by the user. It can also be controlled to output to the display 50.

  In the processing flow of FIG. 6, it is preferable that the user keeps watching the program by turning on a predetermined soft switch or hard switch for 5 seconds during which the program is displayed. Note that 5 seconds when the program is displayed is an example, and other settings are possible, and it is preferable that the display time can be set according to the user's preference by the operation input means by the user.

It is a block diagram which shows the outline | summary of the digital data receiver which concerns on this invention. It is a figure which shows an example of a user setting screen. (a) shows an example of current status information, and (b) shows an example of EPG data and the like. It is a figure which shows an example of a display processing flow. It is a figure which shows the example which displays a some program. It is a figure which shows the other example of a display processing flow. It is a figure which shows an example of a user setting.

Explanation of symbols

10 Digital Data Receiver 14 OFDM Demodulation Processing Unit 16 TS Decoding Processing Unit 18 Audio Coder 20 First Video Decoder 22 Second Video Decoder 24 Video Switching Processing Unit 26 Presentation Processing Unit 32 Storage Unit 34 Control Unit 50 Display 60 Speaker 70 Remote Control 84 GPS information receiver

Claims (1)

An in-vehicle digital data receiver,
A receiver for receiving broadcast data;
A setting section for setting the priority program genre for each region;
A program information acquisition unit for acquiring program information by region;
A position information acquisition unit for acquiring position information of the vehicle;
Based on the location information, the region information indicating in which region the vehicle currently exists is detected, and based on the region-specific program information and the region information , from the program information of the region where the current vehicle is located, A control unit that searches for a program corresponding to the priority program genre set for each region and controls the receiving unit to output broadcast data of the searched program;
A digital data receiver comprising:

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