JP2009290444A - Digital broadcasting receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcasting receiver which is excellent in convenience for channel selection or the like because mode selection is automatically changed to an appropriate receiving mode without switching of the receiving mode by a viewer. <P>SOLUTION: The digital broadcasting receiver includes: a receiving mode switching means for switching a normal one-segment receiving mode to receive a one-segment broadcast and a segment receiving mode for receiving a one-segment joint transmission broadcast or a segment separation broadcast, as receiving modes; a receiving means for receiving digital broadcast waves transmitted from a broadcast station; and a channel selection means for selecting a program on the basis of the receiving mode. The switching means analyzes PSI/SI included in the digital broadcast wave, and when the digital broadcast is a one-segment joint broadcast or a segment separation broadcast, the receiving mode is switched to the segment receiving mode. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a digital broadcast receiving apparatus.

  The band of one channel of terrestrial digital broadcasting is divided into 13 segments, of which one segment of the center frequency is for mobile reception, and the remaining 12 segments are for fixed reception (for example, non-patent) Reference 1). A broadcast receiving apparatus compatible with terrestrial digital one-seg broadcasting is designed to receive a TS (transport stream) broadcast in this central segment and present video, audio, and data broadcasts.

  One example of this broadcast receiving apparatus is a one-segment mobile phone that receives terrestrial digital broadcasts for portable terminals. In conventional mobile phones, as a user interface for channel selection, a function for selecting a desired broadcast station by pressing a numeric key or a left / right key, or a specific operation such as pressing a left / right key length, is performed in order of physical frequency. It has a function of searching for receivable broadcast stations and presenting receivable broadcasts to viewers. The conventional one-seg compatible mobile phone that receives digital terrestrial broadcasting for mobile terminals is supposed to receive only one segment for mobile reception. Therefore, the physical frequency received by the tuner during channel selection is the center segment (segment 0).

  In recent years, broadcasting systems have been proposed in which one-segment broadcasting is performed in segments other than the central segment of one channel of terrestrial digital broadcasting (see, for example, Non-Patent Document 2 and Non-Patent Document 3). Corresponding to these, a broadcast receiving apparatus (mobile phone) that receives broadcasts for mobile reception other than the central segment requires a user interface for channel selection that is not found in conventional broadcast receiving apparatuses.

Here, a broadcast in which one-segment broadcasting is performed in all or a plurality of segments from one transmitter is a one-segment connected transmission broadcast, and one or a plurality of non-overlapping segments of the same channel are transmitted from a plurality of transmitters. In 1-segment broadcasts, segment-separated broadcasts, broadcast-segment broadcasts and segment-separated broadcasts, 1-segment broadcasts broadcast in each segment are received as narrow-band 1-segment broadcasts, and narrow-band 1-segment broadcasts are broadcast in any segment A possible receiver is called an arbitrary segment broadcast receiver.
1Seg Service, [online], NTT DoCoMo, Internet <http://www.nttdocomo.co.jp/service/music_movie/1seg/> Kenichi Tsuchida, Development of One-Seg Linked Retransmission Device, [online], NHK Broadcasting Technology Laboratory, Internet <http://www.nhk.or.jp/strl/publica/giken_dayori/jp2/rd-0702-2.html > 1Seg Area Portal Broadcast, [online], Area Portal Co., Ltd. Internet <http://www.areaportal.co.jp/pdf/wtp2006/wtp_2006.pdf>

  As described above, in the conventional broadcast receiving apparatus, the reception mode for receiving normal one-segment broadcasting and the reception mode for receiving arbitrary segment broadcasting are different. Therefore, in order to receive each broadcast, it is necessary to switch the reception mode each time, and the convenience is low.

  Also, even if a regular one-segment broadcast is being received at a place where any segment broadcast can be received, depending on the reception area, it is necessary to switch and check each time without knowing whether or not any segment broadcast can be received. It was. In addition, even when an arbitrary segment broadcast is out of the reception range, it is necessary for the viewer to switch to normal one-segment broadcasting each time.

  Furthermore, since there is no user interface for narrow-band one-segment broadcasting channel selection using any segment broadcasting, it is necessary to install a new user interface. Here, for example, in the method of specifying the received physical channel and segment number by key input, there is a problem that the operation for tuning becomes complicated.

  In view of the above-described problems, the present invention aims at a digital broadcast receiving apparatus that is highly convenient in a channel selection operation or the like by automatically switching to an appropriate reception mode without the viewer switching the reception mode. Is to provide.

  In order to solve the above-described problem, the digital broadcast receiving apparatus of the present invention has, as reception modes, a normal one-segment reception mode for receiving one-segment broadcast and a segment reception mode for receiving one-segment linked transmission broadcast or segment-separated broadcast. A receiving mode switching unit for switching, a receiving unit for receiving a digital broadcast wave transmitted from a broadcasting station, and a tuning unit for selecting a program based on the receiving mode from the digital broadcasting wave received by the receiving unit; The reception mode switching unit analyzes PSI / SI included in the digital broadcast wave, and if the digital broadcast is a one-segment connection broadcast or a segment separation broadcast, the reception mode is changed to a segment reception mode. It is characterized by switching to.

  In the digital broadcast receiving apparatus of the present invention, the channel selection unit selects a program from the digital broadcast wave on a channel basis when the reception mode is a normal one segment reception mode, and the reception mode is segment reception. In the case of the mode, the program is selected in units of segments from the digital broadcast wave.

  In the digital broadcast receiving apparatus of the present invention, the reception mode switching unit switches the reception mode to a normal one-segment mode when the digital broadcast wave cannot be received in the segment reception mode. To do.

  In the digital broadcast receiving apparatus of the present invention, the reception mode switching unit switches between a normal one-segment reception mode and a segment reception mode in accordance with an operation input from a viewer.

  The digital broadcast receiving apparatus of the present invention further includes a user interface providing unit that provides a user interface for selecting a program according to the reception mode.

  In addition, the digital broadcast receiving apparatus of the present invention, as a reception mode, a reception mode switching unit that switches between a normal one-segment reception mode for receiving a one-segment broadcast and a segment reception mode for receiving a one-segment linked transmission broadcast or a segment separation broadcast, A receiving unit for receiving a digital broadcast wave transmitted from a broadcasting station, and a user interface providing a user interface for selecting a program based on the reception mode from the digital broadcast wave received by the receiving unit And the reception mode switching unit analyzes the PSI / SI included in the digital broadcast wave, and if the digital broadcast is a one-segment connection broadcast or a segment separation broadcast, the reception mode is changed to a segment. Switch to reception mode and provide the user interface Parts, the reception mode switching unit, when switched the reception mode is characterized by providing switches and also to the user interface.

  The digital broadcast receiving apparatus of the present invention includes an operation unit having a plurality of operation keys, operation corresponding to the operation keys when the reception mode is a normal one-segment mode, and when the reception mode is a segment reception mode. A storage unit for storing each operation, and the user interface providing unit, when the reception mode switching unit switches the reception mode, the operation of the operation key corresponding to the reception mode, It is characterized by being read from the storage unit and set.

  According to the present invention, the reception mode switching unit that switches between the normal one-segment reception mode for receiving one-segment broadcast and the segment reception mode for receiving one-segment linked transmission broadcast or segment-separated broadcast as the reception mode, and the received digital When the PSI / SI included in the broadcast wave is analyzed and the digital broadcast is a one-segment connection broadcast or a segment separation broadcast, the reception mode is switched to the segment reception mode and a program is selected. Therefore, an appropriate broadcast is received by appropriately selecting a program by switching between the normal one-segment reception mode and the segment reception mode without being conscious of the viewer.

  When the reception mode is the normal one-segment reception mode, the program is selected from the digital broadcast wave in units of channels. When the reception mode is the segment reception mode, the program is selected from the digital broadcast waves in segments. Will be stationed. Therefore, the viewer can select a channel according to the current reception mode without being aware of the reception mode.

  According to the present invention, when the digital broadcast wave cannot be received in the segment reception mode, the reception mode is switched to the normal one-segment mode. Therefore, when the segment reception mode cannot be received, the viewer switches to the normal one-segment mode without switching operation.

  Further, according to the present invention, it is possible to switch between the normal one-segment reception mode and the segment reception mode in accordance with an operation input from the viewer.

  Further, according to the present invention, a user interface for selecting a program according to the reception mode is provided. Therefore, the viewer can use an appropriate user interface, and can also visually recognize which reception mode is currently being received by changing the user interface.

  According to the present invention, the PSI / SI included in the digital broadcast wave is analyzed, and when the digital broadcast is a one-segment connection broadcast or a segment separation broadcast, the reception mode is switched to the segment reception mode, and the user interface Will also be switched. As a result, the reception mode can be switched appropriately according to the received digital broadcast, and the reception mode and the user interface are switched in conjunction with each other, so that the viewer can visually recognize which reception mode is being used. can do.

  In addition, according to the present invention, the operation unit having a plurality of operation keys, and corresponding to the operation keys, the operation when the reception mode is the normal one-segment mode and the operation when the segment reception mode are stored, respectively. When the reception mode is switched, the operation of the operation key corresponding to the reception mode can be read from the storage unit and set. Thereby, the viewer can perform an appropriate key operation according to the reception mode.

  Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: It is not the thing of the character which limits the technical scope of this invention.

Embodiment
An embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, a case where the digital broadcast receiving apparatus of the present invention is applied to a mobile phone will be described.

[1. First Embodiment]
[1.1 Overall view]
FIG. 1 is a schematic diagram of a mobile phone 1 to which a digital broadcast receiver of the present invention is applied. The mobile phone 1 includes a display unit 60 made of a liquid crystal screen, an input unit 70, a terrestrial digital broadcast receiving antenna (not shown), a portable terrestrial digital broadcast receiving tuner, and a portable terrestrial digital broadcast receiving device. The display unit 60 displays digital terrestrial broadcast video and data broadcast. The input unit 70 is a part where the viewer performs a terrestrial digital broadcast viewing operation of the mobile phone, and performs operations such as viewing start / end, channel selection, and broadcast station search by key input.

  In particular, as the keys according to the present embodiment, there are a direction key 702 for performing a broadcast station search by long-pressing the key, and a numeric keypad 704 for selecting a channel by short-pressing the key. The mobile phone of the present embodiment presents video / audio / data broadcast of a desired broadcast station by the terrestrial digital broadcast receiving tuner and the portable terrestrial digital broadcast receiving device when the viewer performs a predetermined key operation. To do.

[1.2 Block diagram]
FIG. 2 is a block diagram showing a basic configuration of the mobile phone 1 of the present embodiment. The mobile phone 1 includes a control unit 10 that controls the mobile phone, a radio unit 20, a communication antenna 22 connected to the radio unit 20, a communication control unit 25 that controls communication of the mobile phone, and digital terrestrial broadcasting. Front-end unit 30, a terrestrial digital broadcast receiving antenna 32 connected to the front-end unit 30, a one-segment back-end unit 35, a speaker 45 for outputting sound during a call or watching TV, and a speaker 45 A voice decoding unit 40 for outputting voice, a microphone 55 for inputting voice, a voice encoding unit 50 for encoding voice inputted from the microphone 55, video and data broadcasting of digital terrestrial broadcasting, broadcast station names, The display unit 60 displays information on the currently selected channel such as a program name, an input unit 70 that receives input from the viewer, and a storage unit 80.

  The control unit 10 is a functional unit that controls the mobile phone 1, and is a functional unit that implements each process by reading and executing various stored programs. For example, it is configured by a CPU (Central Processing Unit).

  The wireless unit 20 is a functional unit that provides each telephone function by communicating with a telephone base station (not shown) via the communication antenna 22. The radio unit 20 is controlled by the communication control unit 25 and communicates with the telephone base station. Since the present invention and the telephone function are not directly related, detailed description thereof is omitted.

  The front end unit 30 is composed of a tuner and a demodulator capable of receiving an arbitrary segment of each channel of terrestrial digital broadcast input from the terrestrial digital broadcast receiving antenna 32, and a demodulated TS (transport stream) is received. Output to the one-segment back-end unit 35. The one-segment back-end unit 35 includes video data and audio data from the input TS, a PSI (Program Specific Information) section which is data used for program selection, an SI (Service Information) section indicating program information, and a data broadcasting Separate data etc.

  Among these, PSI, SI section, and data broadcasting data are input to the control unit 10 and processed by software of the control unit 10. The video data and audio data are decoded by the one-segment back-end unit 35, and video / audio is presented to the viewer through the display unit 60 and the speaker 45.

  The audio decoding unit 40 is a functional unit that decodes audio data input from the communication control unit 25 and audio data input from the one-seg backend unit 35 and outputs the decoded data to the speaker 45. The speech encoding unit 50 is a functional unit that encodes speech input from the microphone 55 and outputs the encoded speech to the communication control unit 25.

  The display unit 60 is a display unit for displaying various states in the mobile phone 1. Further, it is a functional unit for displaying video data input from the front end unit 30 and the one-segment back end unit 35. The display unit 60 is composed of, for example, an LCD (Liquid Crystal Display).

  The input unit 70 is a functional unit that receives an operation / instruction input from a viewer. As shown in FIG. 1, the input unit 70 includes a direction key 702 and a numeric keypad 704. In the present embodiment, the input unit 70 is described as being configured with keys (buttons), but it is needless to say that the input unit 70 may be configured with other means such as a touch panel.

  The storage unit 80 is a functional unit for storing the setting state of the mobile phone 1 and storing various data. Here, the storage unit 80 is configured by any storage device such as a semiconductor memory, a hard disk drive, or an optical drive. The storage unit 80 stores TS identification information 82 and a channel table 84.

  In the TS identification information 82, information for identifying a broadcast station or the like of the received TS is stored. Specifically, as shown in FIG. 3, the physical channel (for example, “22”), the remote control key number (for example, “6”), the network_id (for digital terrestrial broadcasting) A unique 16-bit ID assigned to one transmission master in Japan (for example, “0x7FE3”) and service_id (a 16-bit ID assigned to each service, unique in digital terrestrial broadcasting nationwide) (for example, “0x0598”) Transport_stream_id (16-bit ID assigned to the TS) (for example, “0x7FE3”), TS name (corresponding to the name of the TS, broadcast station name) (for example, “TV ABC”), and service name (service name) (For example, “TV ABC-Mobile”) is stored in association with each other.

  Here, network_id and transport_stream_id are operated as the same value. Further, as shown in “ARIB TR-B14, Vol. 7, 9. Various numerical value assignment list”, the upper 13 bits of the service_id assigned to each service included in the one-segment TS is a value that has a one-to-one correspondence with the network_id. The lower 3 bits correspond to the service number. In the case of one-segment TS, since the maximum number of services included in one TS is 3, the lower 3 bits take a value of 0-2.

  Also, in the storage unit 80, identification information such as network_id of a broadcasting station that performs one-segment linked transmission broadcasting and segment separation broadcasting described later may be registered in advance.

  The channel table 84 is a table that stores key operations and operations in the mobile phone 1 in association with each other. FIG. 8 shows an example of the channel table 84. Details of the channel table 84 will be described later.

[1.3 Channel configuration]
Next, the channel configuration of terrestrial digital broadcasting in this embodiment will be described with reference to FIG. As shown in Fig. 4 (a), one channel of ordinary terrestrial digital broadcasting has a bandwidth of about 5.7 MHz, and this band is divided into 13 segments, and is carried by the central segment (segment 0). Broadcasting for terminals (one-segment broadcasting) is performed, and broadcasting for fixed reception is performed in the remaining 12 segments.

  In addition to the above-described one-segment broadcast system, the target broadcast system in the present embodiment is a one-segment broadcast from a single transmitter as shown in FIG. There is a one-segment linked transmission broadcast in which one or a plurality of one-segment broadcasts are performed from non-overlapping segments of the same channel from a plurality of transmitters as shown in FIG. 4C. Broadcasts such as those shown in FIGS. 4B and 4C are supposed to be broadcast in a narrow area such as an underground shopping street, a stadium, or a station. In these areas, normal one-segment broadcasting is performed on another channel. May be receivable.

  In this embodiment, the segment 0 one-segment broadcast is received on the channel with the one-segment linked broadcast as shown in FIGS. 4B and 4C and the segment separation broadcast, and the broadcast is obtained from the segment 0 PSI / SI information. Can be determined to be one-segment linked transmission broadcasting or segment separation broadcasting, the user interface is automatically switched to that for segment reception. In addition, when the one-segment linked transmission broadcast or segment separation broadcast is out of the reception area, the user interface is automatically switched to the normal one-segment reception user interface.

  Here, the state in which the terminal receives segment 0 one-segment broadcasting (normal one-segment broadcasting) at the time of tuning and is operating in the normal one-seg reception user interface is called “normal one-seg reception mode”, and one-segment broadcasting A state where a broadcast or segment separated broadcast is received at the time of channel selection and is operating in a user interface for one-segment linked transmission broadcast or segment separated broadcast is referred to as a “segment reception mode”. In the normal one-segment reception mode, the unit of physical frequency set in the front end unit 30 at the time of channel selection is a channel unit, whereas in the segment reception mode, the unit of physical frequency to be set is a segment unit.

[1.4 Process flow]
Next, the flow of processing in the mobile phone 1 will be described using the flowchart of FIG.

  After the power is turned on, the control unit 10 performs a one-segment activation process (step S10) by a predetermined key input from the viewer. By the one-seg activation process, the front end unit 30 and the one-seg back-end unit 35 are activated.

  Next, after the 1Seg is activated, the tuning process is performed. Here, the control unit 10 sets the reception frequency to the front end unit 30, and the control unit 10 acquires and analyzes the 1Seg back end unit 35. Set the TS packet type. The conventional one-seg compatible mobile terminal sets the reception frequency of segment 0 to the front-end unit at the time of channel selection. Even in this embodiment, since the receiver can also receive normal one-seg broadcasting, The station sets the frequency of segment 0 (step S12).

  Next, if a one-segment broadcasting wave exists in the center segment (segment 0) of the channel set in the front end unit 30, the TS output from the front end unit 30 is input to the one-segment back end unit 35, and The PSI / SI packet of the TS packet separated by the back end unit 35 is input to the control unit 10. If there is no one-segment broadcast wave in the central segment and no TS input to the one-segment back-end unit 35 continues for a certain period of time, the control unit 10 indicates that the display unit 60 cannot receive the signal. After that, the process corresponding to the key input from the viewer is performed.

  The control unit 10 analyzes the input PSI / SI (step S14) and determines whether the broadcast being received is a normal one-segment broadcast, a one-segment linked transmission broadcast, or a segment separation broadcast (step S16). This determination is made, for example, based on the network_id included in the NIT that is one of the PSIs. This will be specifically described below.

  As shown in FIG. 6, the TS output from the front-end unit 30 is a set of fixed-length TS packets, and each TS packet includes video, audio, PSI / SI, etc. according to the packet ID included in the header part. Classified into packets. A network information table (NIT) that is one of the PSI packets includes a network_id as shown in FIG.

  The control unit 10 receives all the packets of the type set in the one-seg backend unit 35. The control unit 10 extracts the network_id of the received TS from the NIT, and the nationwide registered in the TS identification information 82 of the storage unit 80. Check with network_id of normal 1Seg broadcasting.

  If there is something that matches the network_id of normal one-segment broadcasting, that is, if the received PSI / SI is that of normal one-segment broadcasting (step S16; No), the program in the normal one-segment reception mode is displayed as it is (step S18). ). When a program for normal one seg reception mode is displayed, if there is a channel selection instruction from the viewer by key input, the process proceeds to a process for selecting a channel in the normal one seg reception mode (step S20; channel selection → Step S12). On the other hand, if there is an end key input (step S20; end), one-segment end processing is executed (step S34).

  If there is no match with the network_id of normal one-segment broadcasting in step S16 (step S16; Yes), it is determined that the transmission is segmented transmission or segment separation broadcasting in a specific area, the user interface is switched to the segment reception mode, and the selection is also made. The station UI is changed (step S22).

  Here, when the segment reception mode is out of the reception range (step S24; Yes), the normal one-segment reception mode is switched and the user interface is switched to the normal one-segment reception mode (step S26). As mentioned above, one-segment broadcasting and segmented broadcasting are assumed to be broadcast in narrow areas such as underground malls, stadiums, and stations. Because it is highly likely that it is caused by moving from the broadcasting area of broadcasting and segment separation broadcasting, and it is expected that ordinary one-segment broadcasting can be received outside this broadcasting area, When this happens, switching to the normal one-segment reception mode is performed.

  And a process transfers to step S20 and the key input from a viewer is determined (step S20). When there is a channel selection instruction by key input, channel selection is performed in the normal one-segment reception mode (step S20; channel selection → step S12).

  In order to prevent frequent switching of the user interface when the original broadcast can be received immediately after going out of the reception area for a moment, the tuner of the front end unit 30 does not detect the broadcast wave in order to prevent frequent switching of the user interface. A state in which the state continues for a certain period of time, or a state in which the PSI / SI arranged in the TS at certain time intervals is not input to the one-segment back-end unit 35 may be performed for a certain period of time.

  At this time, the channel selection unit (set frequency unit to the front end unit 30) in the normal one-seg reception mode is a channel unit. Therefore, when a segment other than the segment 0 is being received, it is set to the segment 0 of the same channel. It will be re-selected.

  In addition, when switching to the normal one-segment reception mode while receiving a segment other than the segment 0 of the one-segment linked broadcast, since there is no broadcast wave in the currently received segment 0, information that prompts the viewer to select a channel is displayed. Etc., and re-tuning to normal one-seg broadcasting that can be received.

  In addition, when switching to the normal one-segment reception mode while receiving a segment other than segment 0 of segment separation broadcasting, there is a possibility that segment 0 can be received. The channel is re-selected to segment 0 without displaying the prompt for channel selection. Here, when the segment separated broadcast can be received in the segment 0, the control unit 10 analyzes the received PSI / SI (step S14) and switches to the segment reception mode again (step S22).

  As described above, the processing when receiving a segment other than segment 0 when it is out of the reception range can be different processing when receiving one-segment broadcasting and receiving segment-separated broadcasting. PSI / SI or other means (for example, when it is known in advance by the physical channel number whether the broadcast is a one-segment linked broadcast or a segmented separate broadcast) Only when it can be judged.

  If it is determined in step S24 that the segment reception mode does not fall outside the reception range, the program in the segment reception mode is displayed as it is (step S28). If there is a channel selection instruction by key input from the viewer (step S30; channel selection), channel selection is performed in the segment reception mode (step S32), and a program in another segment is displayed.

  If there is no key input in step S30 (step S30; no key input), the process returns to step S24 and executed. Further, when an end instruction is given by key input (step S30; end), end processing of the front end unit 30 and the one-segment back end unit 35 is performed (step S34).

[1.5 Example of operation]
Subsequently, an operation example of the mobile phone 1 in the present embodiment will be described with reference to the drawings. FIG. 7 is a diagram showing an example of the display screen configuration in the normal one-segment reception mode (FIG. 7A) and the segment reception mode (FIG. 7B) in the mobile phone 1 of the present embodiment.

  As shown in FIG. 7, the main components of the screen after the 1Seg activation in this embodiment are the video display areas R100 and R200 that display the 1Seg video, the subtitle / data broadcast display area R102 that displays the subtitles and the data broadcast, and the like. R202, broadcast station name display fields R104 and R204 for displaying the TS name (broadcast station name) of the TS being received, physical channel number display fields R106 and R206 for displaying the physical channel number being received, and the channel number being received Channel number display fields R108 and R208 to be displayed.

  Of these, in the broadcasting station name display fields R104 and R204, when selecting a broadcasting station registered in advance in the TS identification information 82 of the storage unit 80, the time when the tuning process of step S12 in FIG. 5 is performed. Then, the control unit 10 displays the TS name acquired from the TS identification information 82. However, if the physical channel of one-segment broadcasting or segment separation broadcasting or TS name information is not registered in the TS identification information 82, the control unit 10 cannot acquire the TS name corresponding to the received physical channel. Therefore, the broadcast station name is not displayed immediately after the channel selection process in step S12.

  Similarly, the physical channel number display fields R106 and R206 display the physical channel number being received. The channel selection of the physical channel when the remote control key number and the corresponding physical channel are not registered in the TS identification information 82, or when the user gives an instruction to select a channel by the left and right keys in units of physical channels. This is done by UP / DOWN channel selection of the physical channel with the left and right keys.

  FIG. 7A shows an example of a screen configuration in the normal one-segment reception mode. This corresponds to the screen when the program is displayed (step S18) after the one-segment activation (step S10) in FIG. When the broadcast to be received is a one-segment broadcasting or a segment separation broadcast, the contents of the reception channel are displayed in the video display area R100, the caption / data broadcast display area R102, the broadcast station name display field R104, and the channel number display field R108. Before the transition to the screen configuration of the segment reception mode of FIG.

  Here, the control unit 10 analyzes the NIT out of the PSI / SI included in the TS of the one-segment linked broadcast or the segment separation broadcast output from the one-segment back-end unit 35, and the TS name acquired from the NIT is displayed in the broadcast station name display field. Displayed on R104. At the same time, when the received TS can be determined to be one-segment broadcasting or segment separation broadcasting (step S16; Yes), the channel selection mode is switched to the segment reception mode.

  The screen configuration in the segment reception mode changes as shown in FIG. Here, the control unit 10 indicates to the viewer that the channel selection mode has been switched by changing the display form of the broadcast station name display field R204. In FIG. 7B, the channel name is displayed in “italic” as the display form. However, for example, the character color or the background color may be changed, or a halftone display may be displayed. In the segment reception mode and the normal one-segment reception mode, display changes are made so that the user notices during operation on the parts other than the video display areas R100 and R200 and the caption / data broadcast areas R102 and R202 whose display contents are determined by the broadcast wave. .

  In the channel number display field R208, the segment number being received (here, 0 because it is immediately after switching from the normal one-segment reception mode) is displayed. In the channel number display field R208, the segment number being received in the segment reception mode is displayed. Here, in FIG. 7B, the display form is changed in order to notify that the segment number is displayed instead of the channel number. Note that since the received physical channel is the same in both the normal one-segment reception mode and the segment reception mode, the display in the physical channel display field R206 does not change.

  When it is determined that the reception area is out of the reception area (step S24; Yes), the control unit 10 switches the channel selection mode to the normal one-segment reception mode. In this case, the screen configuration is changed from FIG. 7B to FIG. As described above, in this embodiment, in which mode the viewer is operating in either of two modes, such as changing the display form other than the video and data broadcast display unit, and changing the information displayed on the channel number display part. Make it explicit.

  In the present embodiment, the channel number display field R208 in the segment reception mode is displayed as the segment number being received in the segment reception mode, but this field displays the reception area for one-segment broadcasting and segment separation broadcasting. If it is a unique value, a number such as a remote control key number specified by the NIT of the TS broadcast in each segment may be used.

  Here, the key operation of the mobile phone 1 and the operation in each reception mode will be described using the channel table 84 of FIG. The operation by various key operations is also changed as stored in the channel table 84 of FIG. The operation by each key after the one seg activation (step S10) in FIG. 5 is assigned as “operation in the normal one seg reception mode” in FIG. 8, and the viewer performs the corresponding operation on the input unit 70. The control unit 10 performs a corresponding operation.

  When there is a key input (short press) from “1” to “#” in FIG. 8 in the normal one-segment reception mode, the control unit 10 controls the remote controller key number and physical channel registered in advance in the TS identification information 82. Then, the physical frequency corresponding to the physical channel corresponding to the pressed key is acquired, and this value is set in the front end unit 30. FIG. 8 shows an example in which the broadcasting station corresponding to the remote control keys “3”, “*”, and “0” is not registered in the TS identification information 82. Therefore, in the normal one-segment reception mode, the selection by short-pressing these keys is performed. The station is not performed.

  Short presses of “→” and “←” keys (left and right keys) are assigned to UP / DOWN channel selection. For UP / DOWN tuning, there are cases where remote control key number UP / DOWN tuning is performed and physical channel number UP / DOWN tuning is performed. In FIG. 8, the latter UP / DOWN tuning is selected. As an example, when the “→” key is pressed for a short time, the control unit 10 corresponds to the physical channel of the currently received physical channel + 1 (the minimum physical channel when the currently received physical channel is the maximum physical channel). The physical frequency to be set is set in the front end unit 30. When the “←” key is pressed for a short time, the control unit 10 causes the physical frequency corresponding to the physical channel of the currently received physical channel-1 (or the maximum physical channel when the currently received physical channel is the minimum physical channel). To the front end.

  When the “→” and “←” keys (left and right keys) are pressed for a long time, the control unit 10 changes the physical channel in the + direction and − direction, respectively, and sets the physical frequency corresponding to the physical channel to the front end. Set in the unit 30 to search for receivable broadcasting stations.

  When a valid PSI / SI is input from the one-segment back-end unit 35 and the control unit 10 determines that there is a broadcast station that can be received on the physical channel, the control unit 10 displays an image on the one-seg back-end unit 35. , PID such as voice is set, and broadcast is presented to the viewer.

  In the present embodiment, it is possible to manually switch to the segment reception mode by pressing and holding a key used at the time of TV activation in the normal one-segment reception mode. This is an area where segment separated broadcasting is performed, and a segmented broadcast is performed by a viewer who is outside the segment 0 broadcast wave reception area and within a reception area other than segment 0 by pressing the left and right keys. This is to provide means for switching to the segment reception mode when a selected physical channel is selected.

  As described with reference to FIG. 5, when the control unit 10 analyzes the PSI / SI of the received TS (step S <b> 14) and determines that the received TS is the one-segment linked broadcast or the segment separated broadcast (step S <b> 16; Yes), the screen The configuration changes from FIG. 7A to FIG. 7B, but at the same time, the control unit 10 changes the key operation as shown in “operation in segment reception mode” in FIG. The following operations are performed in response to operations performed on the unit 70.

  Short pressing of the numeric keys from “0” to “9” and “*” and “#” key results in a channel tuning operation in the normal reception mode, but a segment tuning operation in the segment reception mode. 10 sets the physical frequency of the physical channel being received in the segment corresponding to the key pressed by the viewer in the front end unit 30. In addition, UP / DOWN channel selection and channel seek operations by pressing the “→” and “←” keys short and long will also be performed in channel units in the normal reception mode, but in segment reception mode in segment units. It becomes operation. In addition, it is possible to manually switch to the normal one-segment reception mode by pressing and holding a key used at the time of TV activation in the segment reception mode. In the normal reception mode and the segment reception mode, the unit of the frequency set in the front end unit 30 that is changed by key operation is changed.

  As described above, in the present embodiment, the normal one-segment reception mode and the segment reception mode are automatically switched. However, for the convenience of the viewer, the mode can be manually switched by some key operation. As described above, the manual switching from the normal one-segment reception mode to the segment reception mode is performed in an area where segment separated broadcasting is performed, outside the reception area of the segment 0 broadcast wave and within the reception area other than the segment 0. When a viewer who is located selects a physical channel on which segment-separated broadcasting is performed by pressing the left and right keys shortly, or a viewer who is out of the broadcasting area in the receiving segment broadcasts in another segment In order to check the presence / absence of a wave, it is assumed to be used after key selection UI change (step S26) in FIG. 5 and when key input (step S30) is performed in the segment reception mode even outside the reception range. The manual switching from the segment reception mode to the normal one-segment reception mode is performed by changing the channel selection UI when the viewer receiving the one-segment linked broadcast or the segment separation broadcast (step S28) receives the normal one-segment broadcast, It is assumed to be used when performing key input (step S20) in the reception mode.

  Moreover, it is good also as a means to switch a receiving mode only by manual switching, without performing the automatic switching demonstrated by this embodiment by the setting of a viewer.

[1.6 Modification]
In the embodiment described above, an example in which the control unit 10 performs the determination to switch to the segment reception mode based on the network_id has been described, but this determination is stored in the TS identification information 82, such as service_id, transport_stream_id, TS name, service name, etc. It is also possible to use a value uniquely assigned in the existing normal one-segment broadcasting.

  This determination can also be made when the value of the above-mentioned network_id of the received TS has a value different from a value that can be taken by normal one-segment broadcasting.

  In addition, when there is a difference from normal 1Seg broadcasting in PSI / SI format for one-segment broadcasting or segmented broadcasting, operation of various descriptors, broadcast wave modulation method and TMCC information (signals related to modulation wave transmission control) The PSI / SI format, description contents from various descriptors, a broadcast wave modulation method acquired by the control unit 10 from the front end unit 30, TMCC information, and the like can also be used for determination.

  Further, in the above-described embodiment, the identification information such as the network_id of the reception TS does not match any identification information of the normal one-segment broadcasting stored in the TS identification information 82, so that the reception TS can perform one-segment link transmission or Judged as segmented broadcasting. This is because segment separated broadcasting is performed locally, that is, it is considered that there are many numbers.

  In this case, even if the network_id is uniquely assigned, it may be difficult to register all the network_ids in the terminal. According to this method, it is possible to easily identify whether or not the normal one-segment broadcasting is performed. However, the identification method is not limited to this, and if the identification information of one-segment connection transmission or segment separation broadcasting can be registered in advance by some means, it is possible to switch to the segment reception mode when the identification information matches. It is. For example, when the identification information of one-segment broadcasting or segment separation broadcasting is notified by means such as mail via the wireless unit 20, the control unit 10 registers it in the TS identification information 82, and the control unit 10 receives the received TS. At the time of PSI / SI analysis (step S14), a process of changing the channel selection UI to the segment reception mode when it matches the registered identification information (step S22) can be considered.

  Further, in the display of FIG. 7, particularly the channel number display, in the segment reception mode, when displaying the segment number, the channel number display field (the position “6” in the lower left of FIGS. 7A and 7B) and Changing the display of one of the physical channel number display fields (also “22” in the lower right) to the segment number displays a new display while displaying channel information (channel number or physical channel number). There is an effect that the segment number can be displayed at the same time without providing an area.

  In the above case, by displaying the segment number in the channel number display column, the operation change from “1” short press to “#” short press of the key operation shown in FIG. 8 and the display of the channel number and the segment number are displayed. When the changes are performed in synchronism, the viewer can check the operation contents by looking at the same channel number display column when operating either the channel number or the segment number.

  Also, by displaying the segment number in the physical channel number display field, the viewer can distinguish between segment-based broadcasting (segment separated broadcasting or one-segment linked transmission broadcasting) and channel-based broadcasting simply by paying attention to this. And the information of the segment number or physical channel number being received can be obtained. In particular, if the numbers do not overlap in the digital part, such as in Japanese terrestrial digital broadcasting (segment number 0-12, physical channel 13-62 channel), by displaying the non-overlapping numerical part There is an effect that identification is always possible.

[2. Second Embodiment]
Next, the second embodiment will be described. In the first embodiment, the user interface switching between the normal one-segment reception mode and the segment reception mode has been described. However, in the method of the first embodiment, reception is performed in an area where broadcasting is performed as shown in FIG. Even if the middle segment is out of range, other segments transmitted from other transmitting stations on the same channel may not be out of range. In this case, as in the first embodiment, when switching to the normal one-seg reception mode outside the reception area, the actual one-seg reception mode is switched to the normal one-seg reception mode although it is actually in the broadcast area.

  Therefore, in the second embodiment, an example of avoiding such a state and switching to the normal one-segment reception mode when going out of the area where broadcasting is performed as shown in FIG. 4C will be described. To do.

[2.1 Process flow]
FIG. 9 is a flowchart of processing for switching from the segment reception mode to the normal one-segment reception mode in response to the broadcast as shown in FIG. The process of the mobile phone 1 in the second embodiment is executed by the process in which the process of step S26 is replaced with steps S50 to S58 in FIG. 5 showing the process of the mobile phone 1 in the first embodiment. Therefore, in the present embodiment, this changed part will be described. The functional configuration is the same as that of the first embodiment (FIG. 2), and the description thereof is omitted.

  In FIG. 9, when the segment reception mode is out of the reception range (step S <b> 24; Yes), the control unit 10 displays a message “Cannot receive. Do you want to check whether other segments can be received?” On the display unit 60. Display, prompting the viewer to select whether or not to perform out-of-range confirmation (step S50).

  When the viewer selects not to perform out-of-range confirmation by a predetermined key operation (step S50; No), the normal one-seg reception mode is switched as in the first embodiment, and the user interface is switched to the normal one-seg reception mode (step S58). ). Then, the process proceeds to step S30.

  On the other hand, when the viewer selects to perform out-of-range confirmation by a predetermined key operation in out-of-range confirmation (step S50; Yes), segment seek processing is executed (step S52).

  Here, the details of the segment seek process will be described with reference to FIG. The control unit 10 sets the reception frequency of the currently received segment + 1 segment that is out of the reception range to the front end unit 30 (0 when the receiving segment is 12), and selects a channel (step S70). .

  If PSI / SI can be received (acquired) in the newly started segment (the segment selected in step S70), the segment number is stored (step S76). At the time of channel selection, a timer is started at the same time (step S72).

  Here, depending on the received segment, PSI / SI may not be received and a time-out may occur (step S74; No → step S78), but if the time-out and PSI / SI can be received, the segment Ends reception at. Next, it is checked whether or not all segments have been received (step S80). If all segments have been received (step S80; Yes), the segment seek process is terminated. If there is an unreceived segment (step S80; No), the reception frequency of the currently received segment + 1 segment (0 when the receiving segment is 12) is set again for the front end unit 30. (Step S70).

  After the segment seek process is completed, the control unit 10 determines whether there is a receivable segment (step S54). Here, when it does not exist (step S54; No), the mode is changed to the normal one-segment reception mode (step S58). On the other hand, if it exists (step S54; Yes), a receivable segment is presented to the viewer, and the user is prompted to select a receivable segment (step S56).

  When presenting a receivable segment to the viewer, there is a method of presenting the TS name acquired from the NIT or the service name acquired from the SDT together with the segment number. However, the EIT is acquired until the segment seek. For example, in addition to such information, it is possible to present to the viewer the name of the program currently being broadcast or the name of the program scheduled to be broadcast in the future.

  According to the present embodiment, it is possible to avoid switching to the normal one-segment reception mode although it is actually in the broadcast area.

[2.2 Modification]
In the above-described embodiment, the timeout time of the timer during the segment seek operation is a PSI / SI reception disable timeout. However, for example, there is a physical wave in the segment (of the front end unit 30). It is also possible to add a condition such as a tuner lock) to the timeout time. When this condition is added to the timeout condition, if there is no physical wave, the PSI / SI reception disable timeout causes a short physical wave detection timeout to move to the next segment, the physical wave exists, and the PSI / SI If the SI cannot be obtained, the PSI / SI reception disable timeout causes a transition to the next segment.

  By doing so, the reception time in the segment where no physical wave is present can be shortened, so that the time required for the segment seek can be shortened. In addition, since segment seek is intended to receive all segments, it does not depend on the order of segments to be received. As shown in FIG. 4A, since the segment numbers are not arranged in the order of frequency, when the display of the channel number display field R208 in FIG. 7B is changed during the segment seek, the segment seek is performed. The segment numbers that are displayed in order of frequency are not in numerical order. By performing the segment seek in the order of the segment numbers, it is possible to eliminate the discomfort on the display that the viewer can have when the physical frequencies are shifted in the order of the frequencies.

  In the above-described embodiment, the method of receiving all the segments by the segment seek process and presenting the receivable segments to the viewer has been described. However, the view of the receivable segment first found by the segment seek process is described. It may start automatically. Thereby, compared with the case where all segments are sought, the interval until viewing of the next program can be kept short. In this case, when reception is disabled in that segment, segment seek processing is performed each time, and when it is confirmed that reception is not possible in all segments, the mode is switched to the normal one-segment viewing mode.

  In the above-described embodiment, in addition to switching to the normal one-seg viewing mode, a channel that can be similarly received in the normal one-seg viewing mode is searched, and when a channel that can be received first is found, viewing of the program on that channel is started. Also good. This makes it possible to search for a program that can be seamlessly displayed next regardless of the difference in segment and channel.

  At this time, instead of seeking when selecting a new channel, a predetermined channel is displayed such as displaying a program by selecting a channel specified to be selected next or before the channel in the channel list. Also good. In particular, this predetermined channel is not supposed to be used for local broadcasting such as segment-by-segment broadcasting, and normal one-segment broadcasting is expected to be able to be received in a wider range, This has the effect of increasing the possibility of display.

[3. Modified example]
In the embodiment described above, an example in which the present invention is used for a mobile phone has been described. However, the present invention can be used for other devices as long as the device can receive one-segment broadcasting and has a user interface such as a key or a touch panel. Good. For example, a personal computer, a portable terminal, a car navigation system, etc. are mentioned. In the above-described embodiment, “key” is described. However, the key is not limited as long as it is operated by the viewer, and one physical member (button) is assigned to one key as in the above-described embodiment. It may be realized or may be realized by displaying a plurality of operation objects on the touch panel.

  In the above-described embodiment, one-segment broadcasting of Japanese terrestrial digital broadcasting and segment-by-segment broadcasting derived from one-segment broadcasting have been described as examples. However, the present invention is not limited to this, and frequencies between adjacent broadcasting bands are described. The present invention can be applied to a receiver that can receive broadcasting systems having different widths. Therefore, the present invention can also be applied to a receiver that receives normal terrestrial digital broadcasting instead of one-segment broadcasting, or a receiver that receives terrestrial digital broadcasting, one-segment broadcasting, segment separation broadcasting, and the like.

  In addition, when the front end unit 30 of the receiver can receive a broadcasting system in which one TS is transmitted in a plurality of segments, it can be a digital terrestrial audio broadcasting or an ISDB-Tmm system that is scheduled to start service in the future. The present invention can also be applied to a receiver that receives a broadcast.

It is a figure which shows the outline of the mobile telephone in 1st Embodiment. It is a figure which shows the function structure of the mobile telephone in 1st Embodiment. It is a figure which shows an example of the data structure of TS identification information in 1st Embodiment. It is a figure for demonstrating regarding segment broadcasting. It is an operation | movement flow explaining the flow of a process of the mobile telephone in 1st Embodiment. It is a figure for demonstrating a TS packet. It is a figure which shows an example of the display screen in 1st Embodiment. It is a figure which shows an example of the data structure of the channel table in 1st Embodiment. It is an operation | movement flow explaining the flow of a process of the mobile telephone in 2nd Embodiment. It is an operation | movement flow explaining the segment seek process in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone 10 Control part 20 Radio | wireless part 22 Communication antenna 25 Communication control part 30 Front end part 32 Terrestrial digital broadcast receiving antenna 35 One-segment back end part 40 Voice decoding part 45 Speaker 50 Voice encoding part 55 Microphone 60 Display part 70 Input unit 80 Storage unit 82 TS identification information 84 Channel table

Claims (7)

As a reception mode, a reception mode switching unit that switches between a normal one-segment reception mode for receiving a one-segment broadcast and a segment reception mode for receiving a one-segment linked transmission broadcast or a segment separation broadcast,
A receiver for receiving a digital broadcast wave transmitted from a broadcasting station;
From the digital broadcast wave received by the receiver, a channel selection unit that tunes a program based on the reception mode;
A digital broadcast receiver comprising:
The reception mode switching unit analyzes PSI / SI included in the digital broadcast wave, and switches the reception mode to a segment reception mode when the digital broadcast is a one-segment connection broadcast or a segment separation broadcast. A digital broadcast receiver characterized by the above.   When the reception mode is the normal one-segment reception mode, the channel selection unit selects a program from the digital broadcast wave in units of channels, and when the reception mode is the segment reception mode, the channel selection unit starts from the digital broadcast wave. 2. The digital broadcast receiving apparatus according to claim 1, wherein a program is selected on a segment basis.   3. The digital broadcasting according to claim 1, wherein the reception mode switching unit switches the reception mode to a normal one-segment mode when the digital broadcast wave cannot be received in the segment reception mode. Receiver device.   The digital broadcast receiving apparatus according to claim 1, wherein the reception mode switching unit switches between a normal one-segment reception mode and a segment reception mode in accordance with an operation input from a viewer.   5. The digital broadcast receiving apparatus according to claim 1, further comprising a user interface providing unit that provides a user interface for selecting a program according to the reception mode. As a reception mode, a reception mode switching unit that switches between a normal one-segment reception mode for receiving a one-segment broadcast and a segment reception mode for receiving a one-segment linked transmission broadcast or a segment separation broadcast,
A receiver for receiving a digital broadcast wave transmitted from a broadcasting station;
A user interface providing unit that provides a user interface for selecting a program based on the reception mode from the digital broadcast wave received by the receiving unit;
A digital broadcast receiver comprising:
The reception mode switching unit analyzes PSI / SI included in the digital broadcast wave, and when the digital broadcast is a one-segment connection broadcast or a segment separation broadcast, switches the reception mode to a segment reception mode,
The digital broadcast receiving apparatus according to claim 1, wherein the user interface providing unit switches and provides a user interface when the reception mode switching unit switches the reception mode. An operation unit having a plurality of operation keys;
Corresponding to the operation keys, further comprising a storage unit for storing an operation when the reception mode is a normal one-segment mode and an operation when the reception mode is a segment reception mode, respectively.
The said user interface provision part reads the operation | movement of the operation key corresponding to the said reception mode from the said memory | storage part, and sets it, when the said reception mode switching part switches the said reception mode. Item 7. The digital broadcast receiver according to Item 6.