JP5144972B2 - Digital broadcast receiver - Google Patents

Description

  The present invention relates to a digital broadcast receiving apparatus, and more particularly to an apparatus suitable for use in a digital broadcast receiving apparatus mounted on a mobile body such as an in-vehicle or a portable terminal.

  Digital broadcasting uses a UHF (Ultra-High Frequency) band, and its physical channels are from 13 to 62 channels. Broadcast stations that broadcast terrestrial digital broadcasts differ from one broadcast area to another, and the frequency bands and physical channels of radio waves used are also different.

  Therefore, when receiving terrestrial digital broadcasting, it is necessary to first set a region or scan all stations for frequencies (physical channels). This is because the receiving device in the initial state does not know the broadcast wave that can be received in the current receiving environment. Therefore, in order to know this, channel scanning is performed to set the current region or to set a broadcast wave channel list that can be received by scanning all physical channels.

  Each of these two channel list settings has drawbacks, as shown below.

  First, in the case of setting the region, the frequency of the representative broadcasting station is registered in advance as a preset value for each region by the manufacturer before shipment, and the preset value is read into the receiving device when the user sets the region. Set the channel list.

  In this method, since the frequency of a typical broadcasting station is preset, there is no guarantee that reception is always possible in the reception environment where the receiving apparatus is actually installed. In addition, on the prefectural borders, the frequency of the broadcasting station of the neighboring prefecture that is good for viewing is often excluded. However, in this method, since only the stored preset value is read, the setting of the receiving apparatus can be completed quickly.

  On the other hand, in the method of scanning all the frequencies (physical channels), contrary to the above, it takes time for setting to scan all the frequencies (physical channels), but it is possible to know broadcast waves that can be reliably received.

  Since the reception environment does not change greatly in a home-type receiving apparatus at home, once the above setting is made, there is almost no need to set again thereafter. However, in the receiving device mounted on the mobile body, since the reception environment changes every moment, it becomes impossible to receive when moving beyond the broadcast area. Therefore, it is necessary to update the channel list in order to obtain a receivable channel list.

As a broadcast receiving device that automatically switches the channel list, the broadcast receiving device is provided with a plurality of channel lists corresponding respectively to a plurality of different broadcast areas, and when the broadcast receiving device moves beyond the broadcast area, the plurality of pre-installed There has been proposed an apparatus that can save the user the trouble of switching and selecting a channel list by automatically switching and selecting a channel list. Further, when the broadcast wave being played back on the television is abnormally received, the switching channel selection processing is performed, and the program information of the channel determined to be abnormal reception among the program information included in the selected channel or the operator series If there is a channel that matches the number, by selecting the channel, even if the broadcast receiving device moves beyond the broadcast area during TV playback, the TV playback of the same program is continued in the destination broadcast area. What is doing is known (for example, refer to Patent Document 1).
JP 2006-109337 A

  According to the apparatus described in Patent Document 1 described above, when moving beyond a broadcast area, a plurality of channel lists provided in advance can be automatically switched to select a channel for television playback. However, in the apparatus described in Patent Document 1 described above, the route along which the moving body moves is not taken into account, and when switching the channel list, the broadcast area at a position different from the direction in which the moving body is moving is used. You may switch to the channel list. In such a case, the channel selection cannot be performed well, and it is necessary to switch the channel list many times. Thus, there is a problem that it takes a lot of time for channel setting or the channel search needs to be performed again.

  Further, when the broadcast area changes, the remote control number and the three-digit number change, and the remote control number and the three-digit number may change even in the same series of broadcasting stations. For this reason, when the broadcast area changes, if a physical channel corresponding to the remote control number or three-digit number input by the user is selected, the affiliated station may be different, and the same program can be played on the TV in the broadcast area of the destination. You may not be able to watch continuously.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a digital broadcast receiving apparatus that enables setting of a broadcasting station of a receiving apparatus in consideration of an area where the destination mobile body is expected to head.

  The digital broadcast receiving apparatus according to the present invention is a digital broadcast receiving apparatus mounted on a mobile body, a receiving tuner means, a channel list storage means for storing a plurality of channel lists respectively corresponding to a plurality of different broadcast areas, and a mobile A region setting means for setting a region where the body is headed, and a channel list for determining a region where the mobile body moves based on information from the region setting means and setting a reading order of the channel list stored in the channel list storage means An update unit, a reception state monitoring unit for monitoring a reception state, and when the reception state by the reception state monitoring unit is determined to be difficult, the channel list is switched based on the set readout order, and the frequency channel of the switched channel list And a channel selection control means for selecting a channel at

  Furthermore, in addition to the above-described configuration, the present invention provides means for acquiring a broadcaster's carrier sequence number in a normal reception state, and if the reception state by the reception state monitoring means is determined to be difficult, the channel list storage means Means for selecting a broadcasting station having the same operator sequence number as that of a normally receiving broadcasting station from a channel list switched based on a reading order set from a plurality of channel lists stored in the channel list; The station control means can be configured to tune in the frequency channel of the selected broadcast station.

  In addition to the above-described configuration, the present invention further includes a regional target broadcast station information storage unit storing a channel list corresponding to a broadcast station in each region, and includes a plurality of channel lists stored in the channel list storage unit. Means for creating a new channel list by performing a channel search by means of a channel list stored in the regional target broadcast station information storage means when there is no operator series number of a broadcast station in a normal reception state, and the created channel list The means for selecting a broadcast station having the same company sequence number as that of the broadcast station in the normal reception state, and the channel selection control means can be configured to select a channel using the frequency channel of the selected broadcast station.

  In addition, the present invention further includes a regional target broadcasting station information storage unit storing a channel list corresponding to a broadcasting station in each region, and the plurality of channel lists stored in the channel list storage unit are broadcast in a normal reception state. Means for selecting a broadcast station having the same company sequence number as the broadcaster's company sequence number in a normal reception state from the channel list stored in the regional target broadcast station information storage means when there is no station company series number; The channel selection control means can be configured to select a frequency channel of the selected broadcast station.

  In addition, the present invention further includes a navigation means having a position determination means for determining the current position and an area determination means for determining the area to which the mobile body is headed, up to the destination set in the navigation means. The channel list update means can be configured to set the reading order of the channel list stored in the channel list storage means.

  Further, according to the present invention, the position determination unit of the navigation unit detects the presence / absence of a change in the broadcast area, and the channel list update unit is stored in the channel list storage unit when there is a change in the broadcast area. The reading order of the channel list can be changed based on the current position.

  According to the present invention, the broadcast receiving device is provided with a plurality of channel lists corresponding respectively to a plurality of different broadcast areas according to the priority of the channel list stored from the current location to the destination according to the movement route, and the broadcast receiving device includes the broadcast areas. When moving beyond the channel list, the channel list is switched to the channel list of the broadcast area that can be estimated as the next broadcast area from the plurality of channel lists prepared in advance, so that the selectable channel list can be quickly selected.

  Further, according to the present invention, when a broadcast wave being played back on a television is abnormally received, if there is a channel that matches the operator sequence number of the channel that is determined to be abnormally received, the channel is selected and the channel is being played back. Even when the broadcast receiving apparatus moves beyond the broadcast area, it is possible to continue television playback of the same program in the destination broadcast area. Moreover, even if the remote control number and the three-digit number are different even if the broadcasting station is the same series, the same channel is selected in the broadcast area of the destination by specifying the physical channel based on the business series number and selecting the channel. TV playback can be continued.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated in order to avoid duplication of description.

  The present invention searches for location information and a route to a destination, predicts a broadcast area that will be receivable with the movement of a mobile object, sets channel list priorities, and sets a plurality of channels. The present invention provides a receiving apparatus that prepares a list and performs channel selection according to the priority order of the channel list.

  In addition, when it is difficult to view the currently selected broadcast station, it is configured to automatically receive the same series of broadcast stations with the best reception status from the broadcast stations existing in the current channel list. is there.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the digital broadcast receiving apparatus in this embodiment.

  The digital broadcast receiving apparatus 1 in this embodiment is used by being mounted on a mobile car or a mobile phone, etc., and includes a digital broadcast receiving unit 10, a display 31, an output device 30 including a speaker 32, a numeric keypad, and a touch panel. The input device 33 is configured to be configured.

  The digital broadcast receiver 1 has a function as a digital broadcast receiver 10 that outputs video and audio by digital broadcast received by the tuner unit 12 and a destination to which the moving body moves based on information input from the input device 33. And a route search function for searching for a route up to.

  The digital broadcast receiving unit 10 can receive a digital broadcast in which signals of a plurality of programs having different broadcast systems (transmission rates) are multiplexed, that is, a fixed digital broadcast and a mobile digital broadcast that are transmitted simultaneously. In addition, you may comprise so that only the digital broadcasting for mobile bodies can be received.

  In digital broadcasting, a channel can be divided into 13 segments and grouped into a maximum of three layers (A layer, B layer, C layer), and different broadcast parameters can be set for each layer. (Hierarchical transmission method). A band for broadcasting for mobile reception, for example, one segment of the A layer is secured in one channel, and the remaining 12 segments are allocated to the B layer and the fixed C layer for mobiles. The bit rate increases in the order of the A layer, the B layer, and the C layer. The video of the program received by the A layer has the lowest quality, and the video of the program received by the C layer has the highest quality.

  The output device 30 includes a display 31 configured by an LCD (Liquid Crystal Display) or the like and a speaker 32.

  The input device 33 is provided with a keyboard, various function buttons, and a pointing device such as a touch panel provided integrally with the display surface of the display 31. The user uses the input device 33 to input information indicating a remote control number and various functions.

  Information such as the current position, destination, and route via the input device 33 is input, and the data is stored in the RAM 17. The stored data is given from the bus 40 to the CPU 11 as a control unit. The CPU 11 searches for a current location, a destination, and a route (route) to the destination based on the given data, and provides the RAM 17 with information such as the route (route) and the destination. In addition, a target database indicating a correspondence relationship between a place, a postal code, a telephone number, and the like is stored in the ROM 16, and the CPU 11 can perform a destination search or the like using the target database. Information such as a route (route) and a destination by the destination search is stored in the RAM 17.

  A radio wave from the broadcasting station 60 is received by the antenna 11 a, and the received radio wave is given to the tuner unit 12. The tuner unit 12 tunes to a predetermined channel frequency received by the antenna 11a in accordance with a channel selection control signal given from the CPU 11 of the digital broadcast receiving device 10 via the bus 40, and converts it to an intermediate frequency to be amplified. To do. The tuner unit 12 can detect a level change (received electric field strength) of a digital broadcast signal based on, for example, a signal level of an intermediate frequency.

  The tuner unit 12 demodulates the digital broadcast signal, performs error detection and correction, and then outputs a decoded transport stream (TS (Transport Stream)) signal to the TS separation unit 13 via the bus 40. The tuner unit 12 can detect a bit error rate (BER) before and after error correction, and outputs the current reception level, BER, and the like to the CPU 11 as reception state information. The reception state information may include not only the BER but also a gain value by AGC (Auto Gain Control) at the time of amplification. Demodulation, error correction, and the like are subjected to processing such as demodulation and error correction by an ISDB-T (Integrated Services Digital Broadcasting-Terrestrial: terrestrial digital) decoder and output as a TS signal. Demodulation is performed based on OFDM (Orthogonal Frequency Division Multiplexing).

  In addition, as will be described later, the tuner unit 12 selects a channel list that is currently used in accordance with an instruction from the CPU 11 in accordance with a channel list stored in the reception channel list memory 18, and performs channel selection based on the selected channel list. Is called.

  The CPU 11 controls the entire digital broadcast receiving apparatus 1 and controls the broadcast receiving function by executing a program stored in the ROM 16. In this embodiment, based on the information stored in the RAM 17, a broadcast area that can be received in advance is predicted as the mobile body moves, and the priority order of the channel list is set. Accordingly, the optimum channel list is selected, and control is performed so that the tuner unit 12 can select a desired channel or the like. In addition, when the same program is broadcast in multiple layers (simultaneous broadcasting), the program transmitted by the optimal broadcasting system (transmission rate) is output without being affected by a temporary change in reception state. It can also be configured to control.

  The ROM 16 stores a program for realizing each function provided by the digital broadcast receiving apparatus 1. The program for realizing the broadcast reception function includes a channel search, a channel list switching, which will be described later, A program for executing update control is included. The ROM 16 uses, for example, a flash memory or a hard disk, and stores program information (EPG), a list of regional broadcasting stations, etc. in addition to storing the above-described program.

  The TS separation unit 13 separates the TS output from the tuner unit 12 into TSs for each layer and outputs them. The TS separation unit 13 separates and extracts video data and audio data constituting a multiplexed program, and separates and extracts NIT (Network Information Table) and the like that are multiplexed and transmitted as additional information.

  The video data separated by the TS separation unit 13 is supplied to the video decoder 14 via the bus 40. In this embodiment, the encoded video data is H.264. H.264 data. The video decoder 14 is an H.264 decoder. H.264 encoded video data is decoded and an uncompressed digital video signal is output. This uncompressed digital video signal is output from a video (Video) output unit and provided to the display 31 of the output device 30. When the encoded video data is MPEG (Moving Picture Experts Group) data, the video decoder 14 performs MPEG decoding and outputs an uncompressed digital video signal.

  The uncompressed digital video signal supplied to the output device 30 is encoded into a video signal corresponding to the display format of the display 31 and displayed on the display device 31.

  For example, GUI-type OSD (On Screen Display) information supplied from the CPU 11 is superimposed on the display device 31 and displayed. The CPU 11 gives operation buttons, an electronic program screen, a menu screen, and other character information.

  The audio data separated by the TS separation unit 13 is given to the audio decoder 15 through the bus 40, and the audio decoder 15 performs ACC decoding processing to the speaker 32 of the output device 30 as uncompressed digital audio data. Given. The audio data is converted from a digital signal to an analog signal by a not-shown DAC (Digital Analog Converter), then controlled to a predetermined volume and output from the speaker 32.

  Additional information such as NIT separated and extracted by the TS separation unit 232 is given from the bus 40 to the CPU 11, and is stored in the RAM 17 from the CPU 11.

  The RAM 17 described above temporarily stores various programs, data, and the like, and is provided with an area for saving or developing TS input through the demultiplexer 31.

  In the digital broadcast receiving unit 10 in this embodiment, a reception channel list memory 18 constituted by a nonvolatile memory is connected to a bus 40. In the reception channel list memory 18, a broadcast area information list in a plurality of broadcast areas in which the priority order of the channel list is set in anticipation of a broadcast area that will be able to be received in accordance with the movement of a mobile object or the like. The channel list is stored. This channel list reads a plurality of channel lists based on the route information searched by the CPU 11 from the regional target broadcast station list stored in the ROM 16, and stores each channel list according to the route from the current location to the destination. To do.

  In this embodiment, the reception channel list memory 18 is described as a separate circuit block. However, the reception channel list memory area is provided in the RAM 17, and the function of the list update unit is operated by the CPU 11, whereby the reception channel list memory 18 is provided. 18 may not be provided as a separate circuit.

  The RAM 17 also stores broadcast format information indicating an optimal broadcast format within the area, information indicating an expected reception level when a radio wave transmitted from the communication tower 60 is received, and the like. Information indicating the traveling state (speed, direction, altitude) of the moving body (vehicle) can be added and accumulated.

  Next, the control operation of the CPU 11 described above is shown as a functional block in FIG. The CPU 11 controls various operations by a program stored in the ROM 16 by a function indicating the control operation shown in FIG.

  As shown in FIG. 2, the CPU 11 performs control operations as a switching control unit 111, a list update unit 112, a channel selection unit 113, and a broadcast analysis unit 114. The CPU 11, the tuner unit 12, the TS separation unit 13, the ROM 16, the input device 33, and the reception channel list memory 18 are connected via a bus 40.

  When a remote control number or a three-digit number is input from the input device 33, the information is given from the bus 40 to the CPU 11. When the information on the remote control number or the three-digit number is given, the switching control unit 111 starts the switching channel selection by controlling the list updating unit 112, the channel channel selection unit 113, and the broadcast analysis unit 114. In addition, the switching channel selection is also started when an abnormality occurs in the reception state such as when the broadcasting area is out of service area. The switching control unit 111 controls the operation to start the channel search when there is no receivable channel even after searching all the channel lists stored in the reception channel list memory 18.

  The list update unit 112 performs read control and write control on the reception channel list memory 18. For example, the order (priority order) set in the channel list to be used is managed from among a plurality of channel lists stored in the reception channel list memory 18, and the update of the channel list is controlled.

  The channel tuning unit 113 receives an instruction from the switching control unit 111, sets a physical channel (Ch) in the tuner unit 12, and broadcasts that can be received on the set physical channel based on the reception state information obtained from the tuner unit 12. If there is a wave (TS), it is determined that the physical channel has been successfully selected, and the TS 12 is output from the tuner 12 to the TS separator 13 as it is. When there is no receivable broadcast wave (TS), it is determined that the physical channel channel selection has failed, and the switching channel selection control unit 111 is notified accordingly.

  The broadcast analysis unit 114 receives an instruction from the switching control unit 111 and performs setting of the TS separation unit 13 and analysis of data separated by the TS separation unit 13. By this analysis, the switching control unit 121 is notified of the broadcast station information obtained, the TS service configuration, and the like. In addition, the state of the tuner unit 12 is monitored, and when the digital broadcast receiving apparatus 1 moves out of the broadcasting area, it notifies the switching channel selection control unit 121 to that effect.

  An example of the broadcasting station correspondence table in each region is shown in FIG. As shown in FIG. 3, the area is specified by the codes of the area identification data 0-63. 0-9 show wide area broadcasts, and 10-63 show prefectural area (prefecture stations) broadcasts. Specifically, as shown in FIG. 3, wide area broadcasting includes the Kanto, Kinki, Chukyo, Hokkaido area, Okayama Kagawa, and Shimane Tottori. In addition, prefectural broadcasting is divided into 6 prefectures and Hokkaido. 4 is a channel list of the Kinki region, and FIG. 5 is a part of a channel list of the Shikoku region of China. FIG. 6 is a list showing the broadcaster representatives representing the broadcaster series numbers and series. The channel lists in FIGS. 4 and 5 include a region, a broadcasting station name, a remote control number, a physical channel, and a provider series number. Each channel list further includes a three-digit number, a service ID, a reception level, and the like, which are not shown in the figure.

  The reception channel list memory 18 stores a region corresponding to the current position of the mobile body as a broadcast channel list as a channel list having the highest priority, and a plurality of priority levels determined along the route to the destination. Stores the channel list.

  In this embodiment, when a broadcast is received while moving by a mobile body such as an automobile, if a broadcast area that can be received is different, a list of channels on which the mobile body is located is based on data set in advance. Switch and update the list of currently used channels to be used. In other words, when the current receiving station exits the service area of the transmitting station and enters the service area of the next transmitting station, or when there is no physical channel that can be received, the channel list can be switched to the next priority channel list. .

  Also, when receiving a broadcast while moving on a mobile object, the program of the same series as the program currently being watched is automatically searched and continued even if the physical channel, remote control number, and 3-digit number are different. It is possible to view the video.

  FIG. 7 schematically shows such a state. The mobile unit 400 receiving the broadcast of the A transmitting station within the receivable range 304 of the A transmitting station 301 passes through the receivable range 306 of the B transmitting station 302 to the service area of the C transmitting station 303 of the destination 310. It shows how to go. The destination 310 set by the mobile unit 400 using the input device 33 is the receivable range 308 of the C broadcasting station 303 adjacent to the B transmitting station 302.

  For example, the user uses the input device 33 to input that the current location is Osaka and the destination is Okayama and the user moves using a highway or a railway. In accordance with this input, the CPU 11 searches for a route and obtains a route from the Osaka broadcast area to the Okayama broadcast area via the Hyogo broadcast area. Then, the CPU 11 reads the channel list corresponding to the broadcast area in Osaka, the broadcast area in Hyogo, and the broadcast area in Okayama from the regional target broadcast station list in the ROM 16. The priority is set to Osaka first, the second to Hyogo, and the third to Okayama, and the channel list of each broadcast area is stored in the reception channel list 18 together with the priority.

  FIG. 8 is a channel list according to the movement route shown in FIG. 7, where the A area is Osaka, the B area is Hyogo, and the C area is Okayama. The priorities are (A) to (B) and (C).

  In FIG. 7, it is assumed that the mobile unit 400 receives the broadcast of the A transmission station 301 in the service area (A area: Osaka) 305 of the A transmission station 301. The service areas of the B transmitting station 302 and the C broadcasting station 303 are the B area (Hyogo) 307 and the C area (Okayama) 309.

  The operation of the first embodiment of the present invention will be described below with reference to the flowcharts of FIGS. First, the operation of detecting a movement path and setting a plurality of channel lists in the reception channel list memory 18 will be described with reference to the flowchart of FIG.

  The user uses the input device 33 of the broadcast receiving device 1 to input moving means such as using a current location, a destination, a train, a car, and an expressway in order to set a route for the user to move (step S101). The user may directly set the movement route using the input device 33. For example, it is configured to be able to make settings such as going to Okayama from Shin-Osaka Station in Osaka using the Shinkansen.

  The CPU 11 searches for a moving route based on the input information such as the current location, the destination, and the moving means (step S102). When the broadcast receiving device of the present invention is mounted on a navigation device, the travel route may be searched using the route search function of the navigation device. If the user has set a movement route, the CPU 11 selects the set movement route.

  Subsequently, the channel list of each broadcast area from the current location to the destination is read from the ROM 16 in accordance with the obtained travel route (step S103).

  Thereafter, the CPU 11 gives priority to the read channel list along the movement path, and stores it in the reception channel list memory 18 (step S104). If Osaka is the current location and the destination is Okayama, the priority is set to Osaka first, Hyogo second, Okayama third, and the channel list of each broadcast area to the receiving channel list 18 Store with each.

  Thus, the channel list of each broadcast area is stored in the reception channel list 18 along the movement route from the current location to the destination, and the channel selection operation of the broadcast receiving device 1 is performed according to this channel list.

  FIG. 10 is a flowchart showing the channel selection operation. The channel selection operation will be described with reference to FIG.

  When the channel selection operation is started, the CPU 11 stands by until the channel selection button is pressed on the input device 33 (step S1). When the channel selection button is pressed on the input device 33, in step S2, the switching control unit 111 determines whether a physical channel corresponding to the remote control number or three-digit number input from the input device 33 is currently set. To do. Then, it is determined whether there is a physical channel in the channel list set as the current use stored in the reception channel list memory 18 via the list update unit 112. The channel list used for this determination is set according to the priority of the channel list stored from the current location to the destination according to the movement route. When the channel selection operation is first started, the channel list having the highest priority is set as the channel list to be used. In the example shown in FIG. 7, the Osaka area channel list is set first.

  If it is confirmed in step S2 that the physical channel is currently set or exists in the channel list (YES), the process proceeds to step S3, and is not currently set and does not exist in the channel list (NO). Is confirmed, the process proceeds to step S6.

  In step S3, the switching control unit 111 controls the channel selection unit 113 to set the tuner unit 12 with the physical channel corresponding to the remote control number or the three-digit number input from the input device 33, and broadcast waves (TS) Receive.

  Subsequently, in step S4, the channel selection unit 113 determines whether or not the physical channel selection in step S3 is successful. If it is determined that the channel selection unit 113 is successful (YES), the process proceeds to step S5 and fails (NO). If it is determined, the process proceeds to step S6.

  In step S5, the broadcast wave (TS) obtained by the physical channel tuning in step S3 is analyzed, the broadcast station is specified, the broadcaster operator serial number and the channel list are changed, and the process proceeds to step S10.

  In this process, in order to automatically search for a broadcasting station of the same series as the broadcasting station currently being watched, for example, when reception sensitivity deteriorates or it becomes impossible to receive completely as described later, Stores the company series number indicating the series. If this company series number is set in the channel list in advance, the company series number is acquired from the data. Alternatively, a broadcasting station / sequence number correspondence table as shown in FIG. 4 is stored in the ROM 16 or the like, and the operator sequence number is acquired based on the correspondence table.

  If the physical channel is not currently set and does not exist in the channel list, or if channel selection of the physical channel fails, the process proceeds to step S6. In step S6, the switching control unit 111 determines whether or not physical channel tuning has been performed for all channel lists stored in the reception channel list memory 18, and if it is determined that the channel selection is not performed (NO), the process proceeds to step S7. If it is determined that the process proceeds (YES), the process proceeds to step S8.

  In step S7, the channel list that is currently set to be used by the list updating unit 112 is changed to the channel list of the next priority, and the process returns to step S2. In this way, by switching the channel list according to the priority of the channel list from the current location to the destination according to the movement route, the possibility of successful channel selection with the next channel list is improved.

  Thereafter, the above operation is repeated until channel selection is successful. If it is determined in step S6 that the channel selection is not successful and all the channel lists stored in the reception channel list memory 18 have been confirmed, the process proceeds to step S8.

  In step S8, the switching control unit 111 determines whether a channel search has already been performed. If it is determined that the channel search has not been performed (NO), the process proceeds to step S9. If it is determined that the channel search has been performed (YES), the process proceeds to step S10. .

  In step S9, the switching control unit 111 performs a channel search of the 13 to 62 physical channels stored in the ROM 16, detects a currently receivable channel, creates a new channel list, and returns to step S2. .

  As described above, the frequency of performing the channel search can be kept low by performing the channel search only after channel selection fails using all the channel lists stored in the reception channel list memory 18. When performing a channel search, it is possible to perform a channel search at high speed by excluding channels in the channel list where channel selection has failed from the search target.

  In step S10, a switching channel selection result such as channel list identification information is displayed on the display 31, and the switching channel selection process is terminated.

  The reception channel list memory 18 shown in FIGS. 1 and 2 stores a corresponding remote control number every time a broadcast station is specified and a channel list setting is changed (corresponding to step S5 in FIG. 10) in the channel list specifying process. The last channel list is stored together with the channel list identification information currently used. Here, the remote control number is taken as an example, but a 3-digit number or a service ID may be used, and any information that can display a channel may be used.

  Thus, according to this embodiment, the broadcast receiving apparatus is provided with a plurality of channel lists corresponding respectively to a plurality of different broadcast areas according to the priority of the channel list stored from the current location to the destination according to the movement route. When the broadcast receiving apparatus moves beyond the broadcast area, the channel selection is performed by switching from a plurality of channel lists prepared in advance to the channel list of the broadcast area that can be estimated as the next broadcast area. As a result, it is possible to quickly select a channel list that can be selected.

  Next explained is the second embodiment of the invention. In the second embodiment, a case will be described in which the reception sensitivity of a broadcasting station being viewed deteriorates due to movement or cannot be completely received. The configuration of the digital broadcast receiving apparatus according to this embodiment is the same as that shown in FIGS. 1 and 2, and will be described with reference to FIGS.

  FIG. 11 is a flowchart showing a procedure of abnormal reception avoidance processing during television playback of the digital broadcast receiving apparatus according to the second embodiment of the present invention.

  During television playback, as shown in FIG. 11, the CPU 11 determines whether the broadcast wave has been received normally and video and audio are being played back (step S201). If it is determined in step S201 that the broadcast wave is normally received (YES), the abnormal reception avoidance process is terminated. On the other hand, when the reception state is bad, an error occurs in the reproduction of video or audio, and the reproduction stops, for example, when it is determined that the broadcast wave is not normally received, that is, it is abnormal reception (NO) The process proceeds to step S202.

  In step S202, the broadcaster's business channel number that is currently being played back on the television is acquired. This sequence number information is used to read out the stored company sequence number in the process of specifying the broadcasting station and changing the channel list setting (corresponding to step S5 in FIG. 10) in the channel list specifying process. It should be noted that the carrier series number may be stored in the ROM 16 in advance, but if not stored in the ROM 16, it may be constructed from broadcast data and stored in the reception channel list memory 18. good. In the case of building from broadcast data, it may be acquired from affiliated company information of BIT (Broadcaster Information Table) which is one of broadcast data.

  Subsequently, in step S203, the channel list that is currently set to be used by the list updating unit 112 is changed to the channel list of the next priority, and the process proceeds to step S204.

  In step S204, the switching control unit 111 determines whether there is a physical channel of the broadcasting station corresponding to the provider sequence number. In other words, the broadcaster's operator that has been searched for and reproduced the broadcaster's affiliated sequence number in the channel list set in the channel list stored in the reception channel list memory 18 for use at present through the list update unit 112. It is searched whether there is a broadcast station that has the same sequence number, and it is determined whether there is a physical channel of the broadcast station corresponding to the provider sequence number. Searching for broadcast stations of the same series that have the same operator series number is likely because the same series of broadcast stations, except for local news, is likely to be broadcasting programs with almost the same content. This is because the program can be viewed without being interrupted by switching to the same affiliated station in a good reception state. Further, when the broadcast area changes, the remote control number and the three-digit number change, and the remote control number and the three-digit number may change even in the same series of broadcasting stations. For this reason, when the broadcast area changes, the affiliated station may be different if a physical channel corresponding to the remote control number or three-digit number input by the user is selected. Therefore, in this embodiment, the corresponding physical channel is specified from the carrier sequence number.

  Then, when it is confirmed that the corresponding carrier series number exists in the channel list (YES), the process proceeds to step S205, and when it is confirmed that it does not exist in the channel list (NO), the process proceeds to step S208.

  In step S205, the switching control unit 111 controls the channel selection unit 113, thereby setting the tuner unit 12 with a physical channel corresponding to the operator sequence number and receiving a broadcast wave (TS).

  Subsequently, in step S206, the channel selection unit 113 determines whether or not the physical channel selection in step S205 has been successful. If it is determined that the channel selection unit 113 has succeeded (YES), the process proceeds to step S207 and has failed (NO). If it is determined, the process proceeds to step S208.

  In step S207, the broadcast wave (TS) obtained by the physical channel selection in step S3 is analyzed, the broadcast station is specified, the broadcaster operator serial number and the channel list are changed, and the process proceeds to step S212.

  In step 212, the name of the broadcasting station of the same series is displayed on the display 31 to notify the user that switching to the broadcasting station of the same series is made.

  If the corresponding physical channel is not set or the channel selection of the physical channel fails, the process proceeds to step S208. In step S208, the switching control unit 111 determines whether or not the search for the carrier sequence number and the physical channel tuning have been performed for all the channel lists stored in the reception channel list memory 18, and it is not performed (NO) ), The process proceeds to step S209. If it is determined that the process is being performed (YES), the process proceeds to step S210.

  In step S209, the channel list currently set by the list updating unit 112 is changed to the channel list of the next priority, and the process returns to step S204.

  Thereafter, the above operation is repeated until channel selection is successful. If it is determined in step S208 that the channel selection is not successful and all the channel lists stored in the reception channel list memory 18 have been confirmed, the process proceeds to step S210.

  In step S210, the switching control unit 111 determines whether a channel search has already been performed. If it is determined that the channel search has not been performed (NO), the process proceeds to step S211. If it is determined that the channel search has been performed (YES), the process proceeds to step S212. .

  In step S211, the switching control unit 111 performs a channel search of the 13 to 62 physical channels stored in the ROM 16, detects a currently receivable channel, creates a new channel list, and returns to step S204. .

  In step S204, it is searched whether or not there is a business entity sequence number corresponding to the created channel list, and the above-described operation is performed.

  Then, if there is no same operator series number even after the channel search is completed, the selectable remote control number is displayed on the display 31 in the channel selection result display (step S212). Then, the abnormal reception avoidance process ends.

  As described above, according to the embodiment, when a broadcast wave during television playback is abnormally received, if there is a channel that matches the operator sequence number of the channel determined to be abnormally received, the channel is selected by that channel. Even when the broadcast receiving apparatus moves beyond the broadcast area during television playback, it is possible to continue television playback of the same program in the destination broadcast area. In addition, even if the remote control number and the three-digit number are different even if the broadcasting station is the same series, the physical channel is specified based on the business series number and the channel selection is performed. Playback can be continued.

  In the above-described second embodiment, a specific example will be described according to the modes shown in FIGS. Here, a case where the channel list corresponding to the broadcast areas of Osaka, Hyogo, and Okayama is set in the reception channel list memory 18 will be described when moving from Hyogo Prefecture to Okayama Prefecture. For example, suppose that you are watching an MBS broadcast in Hyogo Prefecture, approaching the prefectural border, and cannot watch the MBS broadcast. At this time, if the MBS broadcast and the broadcaster in Okayama with the business line number can be viewed, it is possible to continue viewing the program that was being viewed in Hyogo Prefecture.

  When receiving the MBS broadcast, the reception channel list memory 18 stores that the MBS broadcast operator series number is “2”. When the reception state deteriorates and normal reception cannot be performed, the currently used channel list is changed from the channel list stored in the reception channel list memory 18 to the next priority channel list. For example, when an MBS broadcast is received and moved from Osaka to Hyogo, the normal reception state continues, so the currently used channel list remains in Osaka. Therefore, the channel list is switched to the next priority Hyogo. When searching for the same sequence number as the MBS broadcast, the same physical channel of the MBS broadcast is selected in Hyogo and Osaka. Therefore, even if the channel list is switched to Hyogo, the reception is continued, and the channel list is switched to Okayama, which is the next priority.

  Search for a broadcasting station with the service number “2” in the channel list of Okayama. In the channel list of Okayama, the broadcasting station with the business series number “2” is Sanyo Broadcasting, and its physical channel is “21”. If the channel is selected on the physical channel “21”, the Sanyo broadcast can be received, and the same series of broadcasts can be continuously received. As described above, even when the broadcast receiving apparatus moves beyond the broadcast area during television reproduction, the television reproduction of the same program can be continued in the destination broadcast area.

  In the above-described embodiment, even if the broadcast area is changed due to movement, the channel list is not changed if the normal reception state continues. For this reason, if the broadcast area is changed and normal reception cannot be performed after moving, the channel selection operation is performed from the channel list of an area different from the broadcast area of the mobile object located at the nearest position. . Therefore, in the third embodiment, considering the current location of the mobile object, even when the normal reception state continues, if the mobile object moves to a different broadcast area, it corresponds to the position of the mobile object. The channel list is changed.

  FIG. 12 is a block diagram showing the configuration of the digital broadcast receiving apparatus in the third embodiment.

  The digital broadcast receiver 1 according to the third embodiment is used by being mounted on a moving vehicle such as an automobile, and includes an output device 30 including a digital broadcast receiver 10, a navigation unit 20, a display 31, and a speaker 32. The input device 33 includes a numeric keypad and a touch panel.

  The digital broadcast receiving apparatus 1 according to the third embodiment includes a function as a digital broadcast receiving unit 10 that outputs video and audio by digital broadcasting received by the tuner unit 12, and a moving body ( A navigation function for outputting navigation information (such as a map and voice guidance) based on information on the movement state (speed, direction, etc.) of the vehicle) is provided.

  The configuration of the digital broadcast receiving unit 10 is the same as the configuration shown in FIGS. 1 and 2 described above, and the same parts are denoted by the same reference numerals, and the description thereof is omitted here to avoid duplication of description. To do.

  The navigation unit 20 acquires information indicating the moving state of the moving body. The GPS 20 receives a signal from the GPS satellite 50 by the GPS antenna 21a and acquires position information indicating the latitude / longitude / altitude of the current position. A Global Positioning System) unit 21, a vehicle speed sensor 22 that detects vehicle traveling speed and acquires vehicle speed information, and a gyro sensor 23 that acquires traveling direction information indicating the traveling direction of the vehicle are provided. Each information from the GPS unit 21, the vehicle speed sensor 22, and the gyro sensor 23 is given to the CPU 11 via the bus 40.

  The CPU 11 detects the current position based on the navigation data based on the information from the GPS unit 21, the vehicle speed sensor 22, and the gyro sensor 23, determines which area the detected current position belongs to, and the determination result. Is stored in the RAM 17.

  In addition, a target database indicating a correspondence relationship between a place (not shown) and a postal code, a telephone number, and the like is provided, and the CPU 11 performs a destination search of the navigation unit 20 using the target database. Information such as a route (route) and a destination by the destination search is stored in the RAM 17. Using the route search of the navigation unit 20, each channel list is stored in the reception channel list memory 18 according to the route from the current location to the destination with priority.

  In this embodiment, when receiving a broadcast while moving on a mobile body such as an automobile, if a broadcast area that can be received is different, a list of channels in which the mobile body is used is used. The channel list is switched according to the priority order of the channel list stored in 18. That is, the channel can be automatically switched when the service area of the transmitting station that is currently receiving is exited and the service area of the adjacent transmitting station is entered. Also, when receiving a broadcast while moving on a mobile object, it is possible to automatically search for a program of the same series as the program currently being viewed, even if the physical channel is different, and to watch it continuously. It is what.

  The basic channel selection operation is the same as in the first embodiment, and the channel selection operation shown in FIGS. 9 and 10 is also performed in this embodiment.

  The operation of the third embodiment when the reception sensitivity of the broadcasting station being viewed deteriorates due to movement or cannot be completely received will be described. The configuration of the digital broadcast receiving apparatus according to this embodiment is the same as that shown in FIGS. 1 and 2, and will be described with reference to FIGS.

  FIG. 13: is a flowchart which shows the procedure of the abnormal reception avoidance process during the television reproduction of the broadcast receiver which concerns on the 3rd Embodiment of this invention. In the third embodiment, in consideration of the current location of the moving body, even when the normal reception state continues, if the moving body moves to a different broadcast area, the channel corresponding to the position of the moving body Change the list.

  During television playback, as shown in FIG. 13, the CPU 11 determines whether the broadcast wave is normally received and the video and audio are being played back (step S201). In step S201, if it is determined that the broadcast wave is normally received (YES), the process proceeds to step 221, and even when the normal reception state continues, if the moving body moves to a different broadcast area, Then, a process for changing the channel list corresponding to the position of the moving body is performed. In step S221, the current location of the moving object is obtained from the navigation unit 20, and the process proceeds to step S222. In step S222, it is determined whether the broadcast area has changed. That is, it is determined whether the detected current position is a broadcast area of the channel list currently used. If it is determined that there is no change in the broadcast area (NO), the process returns to step S201 and the above operation is repeated.

  On the other hand, if it is determined that the broadcast area at the current position of the mobile object has been changed (YES), the process proceeds to step S223. In step S223, it is determined whether there is a corresponding broadcast area in the channel list stored in the reception channel list memory 18. If the channel list of the region where the mobile is currently exists in the reception channel list memory 18 (YES), the process proceeds to step S224. In step S224, the channel list that is currently used by the list updating unit 112 is changed to a channel list corresponding to the broadcast area at the current position, and the priority is sequentially raised below the priority of this list. Lower the priority order higher than the list and change the priority order of the channel list. For example, as described above, if the movement route shown in FIG. 7 is set, the A area is Osaka, the B area is Hyogo, and the C area is Okayama, the priority order is (A ) Is No. 1, (B) is No. 2, and (C) is No. 3. Even if a moving object moves from Osaka to Hyogo, normal reception continues almost. At this time, when the moving body moves to Hyogo, the CPU 11 detects that the broadcast area has been changed from the current position of the moving body. As a result of this detection, the list updating unit 112 changes the channel list of the broadcast area of Hyogo to the channel list that is currently used, and Okayama, which is the next priority, is the first priority, and Osaka is the next priority of Okayama. Changed to priority.

  On the other hand, in step 223, if the channel list of the region where the moving object is present does not exist in the reception channel list memory 18 (NO), the list update unit 112 detects the channel list of the region detected as the current location from the ROM 16. Is stored in the reception channel list memory 18, and the channel list is changed to a channel list corresponding to the broadcast area at the current position. In this case, the priority order of the stored channel list is lowered by one. For example, even if a moving object moves from Osaka to Kyoto, normal reception continues almost. At this time, when the moving body moves to Kyoto, the CPU 11 detects that the broadcast area has been changed from the current position of the moving body. As a result of this detection, the list update unit 112 changes the channel list of the broadcast area in Kyoto from the ROM 16 to the channel list that is currently used, the next priority is Osaka, the next is Hyogo, and the next is Okayama. To do.

  When the channel list changing process is completed, the process returns to step S201 to repeat the above-described operation.

  In step S201, it is determined that the broadcast wave has not been received normally, that is, it has been abnormally received (NO), such as when the reception state is poor, an error occurs in the reproduction of video or audio, and the reproduction stops. Then, the process proceeds to step S202.

  In step S202, the broadcaster's business channel number that is currently being played back on the television is acquired. This sequence number information is used to read out the stored company sequence number in the process of specifying the broadcasting station and changing the channel list setting (corresponding to step S5 in FIG. 10) in the channel list specifying process.

  Subsequently, in step S203, the channel list that is currently set to be used by the list update unit 112 is changed to the channel list of the next priority, and the process proceeds to step S204. The channel list is changed to the one corresponding to the current location of the mobile object, so the channel list is changed from the current position to the next higher priority channel list. As described above, if the broadcast area has been changed even if normal reception continues, the channel list at the current position has been changed by the processing of steps S221 to S225.

  In step S204, the switching control unit 111 determines whether there is a physical channel of the broadcasting station corresponding to the provider sequence number. In other words, the broadcaster's operator that has been searched for and reproduced the broadcaster's affiliated sequence number in the channel list set in the channel list stored in the reception channel list memory 18 for use at present through the list update unit 112. It is searched whether there is a broadcast station that has the same sequence number, and it is determined whether there is a physical channel of the broadcast station corresponding to the provider sequence number.

  Then, when it is confirmed that the corresponding carrier series number exists in the channel list (YES), the process proceeds to step S205, and when it is confirmed that it does not exist in the channel list (NO), the process proceeds to step S208.

  In step S205, the switching control unit 111 controls the channel selection unit 113, thereby setting the tuner unit 12 with a physical channel corresponding to the operator sequence number and receiving a broadcast wave (TS).

  Subsequently, in step S206, the channel selection unit 113 determines whether or not the physical channel selection in step S205 has been successful. If it is determined that the channel selection unit 113 has succeeded (YES), the process proceeds to step S207 and has failed (NO). If it is determined, the process proceeds to step S208.

  In step S207, the broadcast wave (TS) obtained by the physical channel selection in step S3 is analyzed, the broadcast station is specified, the broadcaster operator serial number and the channel list are changed, and the process proceeds to step S212.

  In step 212, the name of the broadcasting station of the same series is displayed on the display 31 to notify the user that switching to the broadcasting station of the same series is made.

  If the corresponding physical channel is not set or the channel selection of the physical channel fails, the process proceeds to step S208. In step S208, the switching control unit 111 determines whether or not the search for the carrier sequence number and the physical channel tuning have been performed for all the channel lists stored in the reception channel list memory 18, and it is not performed (NO) ), The process proceeds to step S209. If it is determined that the process is being performed (YES), the process proceeds to step S210.

  In step S209, the channel list currently set by the list updating unit 112 is changed to the channel list of the next priority, and the process returns to step S204.

  Thereafter, the above operation is repeated until channel selection is successful. If it is determined in step S208 that the channel selection is not successful and all the channel lists stored in the reception channel list memory 18 have been confirmed, the process proceeds to step S210.

  In step S210, the switching control unit 111 determines whether a channel search has already been performed. If it is determined that the channel search has not been performed (NO), the process proceeds to step S211. If it is determined that the channel search has been performed (YES), the process proceeds to step S212. .

  In step S211, the switching control unit 111 performs a channel search of the 13 to 62 physical channels stored in the ROM 16, detects a currently receivable channel, creates a new channel list, and returns to step S204. .

  In step S204, it is searched whether or not there is a business entity sequence number corresponding to the created channel list, and the above-described operation is performed.

  Then, if there is no same operator series number even after the channel search is completed, the selectable remote control number is displayed on the display 31 in the channel selection result display (step S212). The abnormal reception avoidance process is terminated.

  In the third embodiment described above, the navigation unit 20 is provided, and the navigation unit 20 is configured to detect the current position of the moving body. However, the digital broadcast reception that does not include the navigation unit 20 is provided. If the device can obtain the current position, the channel list can be changed in accordance with the position of the moving body when the moving body moves to a different broadcast area in consideration of the current location. For example, when the digital broadcast receiving device of the present invention is mounted on a mobile phone device, the above-described control may be performed by obtaining information on the current position from the information on the base station of the mobile phone.

  In the above-described third embodiment, a specific example will be described according to the modes shown in FIGS. Here, a case where the channel list corresponding to the broadcast areas of Osaka, Hyogo, and Okayama is set in the reception channel list memory 18 will be described when moving from Hyogo Prefecture to Okayama Prefecture. For example, suppose that you are watching an MBS broadcast in Hyogo Prefecture, approaching the prefectural border, and cannot watch the MBS broadcast. At this time, the user listens to the Okayama broadcasting station of the MBS broadcast and the company serial number.

  When receiving the MBS broadcast, the reception channel list memory 18 stores that the MBS broadcast operator series number is “2”. When the reception state deteriorates and normal reception cannot be performed, the currently used channel list is changed from the channel list stored in the reception channel list memory 18 to the next priority channel list. For example, when receiving an MBS broadcast and moving from Osaka to Hyogo, normal reception continues, but it is used by detecting that the current position has changed from Osaka to Hyogo. The channel list has been switched to Hyogo. The next priority channel list is Okayama. For this reason, the channel list is switched to Okayama of the next priority.

  Search for a broadcasting station with the service number “2” in the channel list of Okayama. In the channel list of Okayama, the broadcasting station with the business series number “2” is Sanyo Broadcasting, and its physical channel is “21”. If the channel is selected on the physical channel “21”, the Sanyo broadcast can be received, and the same series of broadcasts can be continuously received. As described above, even when the broadcast receiving apparatus moves beyond the broadcast area during television reproduction, the television reproduction of the same program can be continued in the destination broadcast area.

  The second and third embodiments described above are configured to perform a channel search when there is no corresponding carrier sequence number in the channel list memory 18, and then search for the corresponding carrier sequence number. ing. The channel search requires a certain amount of time because the channel selection operation is sequentially performed from the 13th channel to the 62th channel. Therefore, in the fourth embodiment, the search is performed by the carrier sequence number between the 13th channel and the 62th channel, sorted by the carrier sequence number, and the channel selection operation is performed by the sorted channel. Then, a desired broadcast station is selected, and the time required for channel selection is shortened.

  The operation of the fourth embodiment when the reception sensitivity of a broadcasting station being viewed deteriorates due to movement or cannot be completely received will be described. The configuration of the digital broadcast receiving apparatus according to this embodiment is the same as that shown in FIGS. 1 and 2, and will be described with reference to FIGS.

  FIG. 14 is a flowchart showing a procedure of abnormal reception avoidance processing during television playback of the broadcast receiving apparatus according to the fourth embodiment of the present invention.

  During television playback, as shown in FIG. 14, the CPU 11 determines whether the broadcast wave has been received normally and video and audio are being played back (step S201). If it is determined in step S201 that the broadcast wave is normally received (YES), the process proceeds to step 221, and even when the normal reception state continues, the mobile unit is the same as in the third embodiment described above. When moving to a different broadcast area, a process for changing the channel list corresponding to the position of the moving body is performed (see steps S221 to 225).

  In step S201, it is determined that the broadcast wave has not been received normally, that is, it has been abnormally received (NO), such as when the reception state is poor, an error occurs in the reproduction of video or audio, and the reproduction stops. Then, the process proceeds to step S202.

  In step S202, the broadcaster's business channel number that is currently being played back on the television is acquired. This sequence number information is used to read the stored company sequence number during the process of specifying the broadcasting station and changing the channel list setting (corresponding to step S5 in FIG. 10) in the channel list specifying process.

  Subsequently, in step S203, the channel list that is currently set to be used by the list updating unit 112 is changed to the channel list of the next priority, and the process proceeds to step S204. The channel list is changed to the one corresponding to the current location of the mobile object, so the channel list is changed from the current position to the next higher priority channel list.

  In step S204, the switching control unit 111 determines whether there is a physical channel of the broadcasting station corresponding to the provider sequence number. In other words, the broadcaster's operator that has been searched for and reproduced the broadcaster's affiliated sequence number in the channel list set in the channel list stored in the reception channel list memory 18 for use at present through the list update unit 112. It is searched whether there is a broadcast station that has the same sequence number, and it is determined whether there is a physical channel of the broadcast station corresponding to the provider sequence number.

  Then, when it is confirmed that the corresponding carrier series number exists in the channel list (YES), the process proceeds to step S205, and when it is confirmed that it does not exist in the channel list (NO), the process proceeds to step S208.

  In step S205, the switching control unit 111 controls the channel selection unit 113, thereby setting the tuner unit 12 with a physical channel corresponding to the operator sequence number and receiving a broadcast wave (TS).

  Subsequently, in step S206, the channel selection unit 113 determines whether or not the physical channel selection in step S205 has been successful. If it is determined that the channel selection unit 113 has succeeded (YES), the process proceeds to step S231 and has failed (NO). If it is determined, the process proceeds to step S208.

  In step S231, it is determined whether or not the physical channel that has been successfully selected is data that has existed in the reception channel list memory 18. If it is determined that a physical channel that has been successfully selected exists in the reception channel list memory 18 (YES), the process proceeds to step S237.

  In step S237, the broadcast wave (TS) obtained by the physical channel tuning in step S236 is analyzed, the broadcast station is specified, the broadcaster operator serial number and the channel list are changed, and the process proceeds to step S212.

  On the other hand, if it is determined that there is no physical channel successfully selected in the reception channel list memory 18 (NO), the process proceeds to step S232. In step S232, the list update unit 112 reads out the channel list of the region including the selected physical channel from the ROM 16, stores it in the reception channel list memory 18, and changes the channel list to the channel list corresponding to the broadcast area at the current position. Then, the process proceeds to step S237.

  In step 212, the name of the broadcasting station of the same series is displayed on the display 31 to notify the user that switching to the broadcasting station of the same series is made.

  If the corresponding physical channel is not set or the channel selection of the physical channel fails, the process proceeds to step S208. In step S208, the switching control unit 111 determines whether or not the search for the carrier sequence number and the physical channel tuning have been performed for all the channel lists stored in the reception channel list memory 18, and it is not performed (NO) ), The process proceeds to step S209. If it is determined that the process is being performed (YES), the process proceeds to step S210.

  In step S209, the channel list currently set by the list updating unit 112 is changed to the channel list of the next priority, and the process returns to step S204.

  Thereafter, the above operation is repeated until channel selection is successful. If it is determined in step S208 that the channel selection is not successful and all the channel lists stored in the reception channel list memory 18 have been confirmed, the process proceeds to step S233.

  In step S233, the switching control unit 111 determines whether an affiliated station search has already been performed. If it is determined that it has not been performed (NO), the process proceeds to step S234. If it is determined that it has been performed (YES), step S235 is performed. Proceed to

  In step S234, the switching control unit 111 retrieves the office series numbers from the 13th channel to the 62th channel stored in the ROM 16, sorts by the broadcasting station having the same office series number, and the same office series number. Is extracted, and the process proceeds to step S235. By extracting only the same office series number, the physical channel for performing the channel selection operation is limited to only the affiliated station, and the channel selection operation can be reduced.

  In step S235, it is determined whether or not all the physical channels corresponding to the searched business office series number have been confirmed. If not completed (NO), the process proceeds to step S236. In step S236, a physical channel that has not yet been selected is selected from the extracted physical channels, and the process returns to step S205. Repeat the operation.

  In step S235, even if it is determined that all physical channels corresponding to the searched business site number have been confirmed (YES), if tuning cannot be performed, there is no same business channel number. In order to display the channel selection result, channel search is performed or another remote control number is selected on the display 31 (step S212). Then, the abnormal reception avoidance process ends.

  Further, when the channel selection of the same series of broadcasting stations is successful, the corresponding remote control number is displayed on the display 31 as the channel selection result (step S212). Then, the abnormal reception avoidance process ends.

  By configuring as described above, a search is performed based on the service provider sequence number from channel 13 to channel 62, sorting is performed by the service provider sequence number, and a channel selection operation is performed on the sorted channel. In comparison, the time required for channel selection can be greatly reduced.

  In the above-described fourth embodiment, when normal reception cannot be performed, it is determined whether or not all the channel lists stored in the reception channel list memory 18 have the same office series number. After that, it is configured to sort by the business entity sequence number. However, if normal reception cannot be performed, it may be configured to immediately sort by the business entity sequence number. In such a configuration, if the moving path set for storing in the reception channel list memory 18 is different from the path on which the user actually moves, the channel selection operation may be faster. Depending on the setting, the setting may be selected.

  The present invention is not limited to a broadcast receiving device that can be mounted on a portable terminal or the like, but can also be applied to a broadcast receiving device that can be mounted on an automobile or the like.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and is intended to include meanings equivalent to the scope of claims for patent and all modifications within the scope.

  The digital broadcast receiving apparatus of the present invention is particularly suitable for mobile use.

It is a block diagram which shows the structure of the digital broadcast receiver in embodiment of this invention. It is a block diagram which shows the structure of the function of the control part of the digital broadcast receiver in embodiment of this invention. It is explanatory drawing which shows the example of the wide area broadcasting station correspondence table | surface of each area. It is explanatory drawing which shows the example of a channel list of the Kinki area. It is explanatory drawing which shows the example of a channel list of Chugoku-Shikoku district. It is explanatory drawing which shows the list which shows the broadcaster who represents a provider series number and a series. It is explanatory drawing which shows the service area of each transmitting station when a mobile body moves from the present location to the destination. It is explanatory drawing which shows the example of the channel list according to each broadcast area from the present location to the destination. 6 is a flowchart showing an operation of setting a plurality of channel lists in a reception channel list memory in the digital broadcast receiving apparatus according to the embodiment of the present invention. It is a flowchart which shows the channel selection operation | movement of the digital broadcast receiver in 1st Embodiment of this invention. It is a flowchart which shows the procedure of the abnormal reception avoidance process in the television reproduction of the broadcast receiver which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the structure of the digital broadcast receiver in 3rd Embodiment of this invention. It is a flowchart which shows the procedure of the abnormal reception avoidance process in the television reproduction of the broadcast receiver which concerns on 3rd Embodiment of this invention. It is a flowchart which shows the procedure of the abnormal reception avoidance process in the television reproduction of the broadcast receiver which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  1 digital broadcast receiver, 10 digital broadcast receiver, 11 CPU, 11a antenna, 12 tuner, 13 TS separator, 14 video decoder, 15 audio decoder, 16 ROM, 17 RAM, 18 reception channel list memory, 30 output device, 31 display, 32 speakers, 33 input devices.

Claims (6)

  In a digital broadcast receiving apparatus mounted on a mobile unit, a receiving tuner unit, a channel list storage unit for storing a plurality of channel lists respectively corresponding to a plurality of different broadcast areas, and a region setting for setting a region to which the mobile unit is headed Channel list updating means for setting the reading order of the channel list stored in the channel list storage means according to the area to which the mobile body moves based on information routed in advance from the area setting means, When the reception status monitoring means for monitoring the reception status and the reception status by the reception status monitoring means are determined to be difficult, the channel list is switched based on the set reading order, and the channel is selected by the frequency channel of the switched channel list. Digital broadcast reception characterized by comprising channel selection control means Location. In a digital broadcast receiving apparatus mounted on a mobile unit, a receiving tuner unit, a channel list storage unit for storing a plurality of channel lists respectively corresponding to a plurality of different broadcast areas, and a region setting for setting a region to which the mobile unit is headed And a channel list updating unit for determining a region where the moving body moves based on information from the region setting unit and setting a reading order of the channel list stored in the channel list storage unit, and monitoring a reception state A reception state monitoring unit; and a channel selection control unit configured to switch the channel list based on a set readout order and select a channel according to the frequency channel of the switched channel list when the reception state by the reception state monitoring unit is determined to be difficult. ,
When it is determined that the reception state by the reception state monitoring means is difficult and the channel list stored in the channel list storage means is set from the plurality of channel lists stored in the normal reception state broadcaster operator serial number anda means for selecting a broadcasting station of the same operator sequence number and operator sequence number of the broadcast station in the normal receiving state from the channel list has been switched on the basis of the read order, the broadcasting station the channel selection control means selected A digital broadcast receiver characterized by selecting a frequency channel. A local target broadcast station information storage unit storing a channel list corresponding to a broadcast station in each region is provided, and a plurality of channel lists stored in the channel list storage unit include a broadcaster's business sequence number in a normal reception state. If there is no channel, a channel search of physical channels from 13 to 62 is performed, a channel that can be received at the present time is detected, a new channel list is created, and a broadcast in a normal reception state from the created channel list 3. A means for selecting a broadcast station having the same operator sequence number as the station affiliate number of the station , wherein the channel selection control means selects a station using a frequency channel of the selected broadcast station. The digital broadcast receiver described in 1. A local target broadcast station information storage unit storing a channel list corresponding to a broadcast station in each region is provided, and a plurality of channel lists stored in the channel list storage unit include a broadcaster's business sequence number in a normal reception state. Means for selecting a broadcast station having the same company sequence number as the broadcaster's series number of a normally received broadcast station from the channel list stored in the regional target broadcast station information storage means, 3. The digital broadcast receiving apparatus according to claim 2, wherein said means selects a channel by a frequency channel of the selected broadcast station. In a digital broadcast receiving apparatus mounted on a mobile unit, a receiving tuner unit, a channel list storage unit for storing a plurality of channel lists respectively corresponding to a plurality of different broadcast areas, and a region setting for setting a region to which the mobile unit is headed And a channel list updating unit for determining a region where the moving body moves based on information from the region setting unit and setting a reading order of the channel list stored in the channel list storage unit, and monitoring a reception state A reception state monitoring unit; and a channel selection control unit configured to switch the channel list based on a set readout order and select a channel according to the frequency channel of the switched channel list when the reception state by the reception state monitoring unit is determined to be difficult. ,
Anda navigation means having a position determining means and the area determination means to determine the region in which the mobile is directed to determine the current position, in accordance with the guidance route to the destination that is set in this navigation device, wherein The channel list updating means sets the reading order of the channel list stored in the channel list storage means. The navigation means has a means for detecting whether or not the broadcast area has been changed by the position determination means, and when the broadcast area has been changed, the channel list update means reads the channel list stored in the channel list storage means. 6. The digital broadcast receiving apparatus according to claim 5, wherein the order is changed based on a current position.

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