JP2017073659A - Digital broadcast receiver and digital broadcast reception method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which if a user performs sorting according to a language in which the user wants to listen to a program, a service of which the use language is unknown is not necessarily ranked high in a station list even if it is broadcast in the desired language, and there is a risk of being dropped from an option of the user.SOLUTION: A digital broadcast receiver comprises: reception means for receiving a digital broadcast signal; and an estimation means for estimating a use language of a service on the basis of a character code of the receivable service included in the received digital broadcast signal.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a digital broadcast receiver and a digital broadcast receiving method for receiving and processing a digital broadcast signal.

  It is common to digitally encode audio and video in audio equipment and video equipment. The trend of digital encoding of audio and video in such audio equipment has spread to the field of radio broadcasting, and several types of digital radio broadcasting have been standardized and put into practical use. One of them is DRM (Digital Radio Mondiale).

DRM is a digital radio broadcast standard of amplitude modulation (AM) centering on short waves in particular, and employs Coded OFDM (Orthogonal Frequency Division Multiplex) as a transmission method. DRM includes DRM30 and DRM ⁺ . For example, the DRM 30 is operated in the AM band to 30 MHz band, and the bandwidth is 4.5 kHz to 20 kHz. The DRM 30 uses a broadcast data capacity of 4.8 k to 72 k [bit / s] and broadcasts digitally encoded high-quality stereo sound.

  In the DRM transmission format, a plurality of audio services and data services are included in a DRM broadcast signal for one channel. In the DRM broadcast signal, for example, a service label is multiplexed as text information indicating a broadcast station name in order to improve convenience during channel selection.

  In this type of digital broadcast receiver, including receivers that can receive DRM broadcast signals, service labels of services that can be received can be displayed in a list. Hereinafter, this list of service labels is referred to as a “station list”. For example, Patent Document 1 describes a specific configuration of a digital broadcast receiver capable of displaying a station list.

  The digital broadcast receiver described in Patent Literature 1 sorts all services included in the ensemble being selectively received in ascending order using the service ID, and displays a station list in the sorted order. The user can select the service of the desired station from the station list.

JP 2000-216693 A

  In the DRM radio broadcast standard, a language code indicating a service language can be multiplexed and broadcast on a DRM broadcast signal. Some digital broadcast receivers have a function of designating a language by a user. Therefore, it is conceivable that the services that use the specified language specified by the user are sorted so that the services are preferentially arranged in a higher rank, and the station list is displayed in the sorted order.

  However, in the DRM radio broadcasting standard, language code broadcasting is optional. For this reason, there are services where the language code is not broadcast and the language used is unknown. A service whose use language is unknown cannot actually be placed in a higher rank by the above-described sorting (sorting services broadcast in a designated language preferentially) even if the service is broadcast in the designated language. Even if such a service is displayed side by side below the service broadcast in a language other than the specified language in the station list and potentially a service that the user wants to watch, it is at the bottom of the list. It is difficult for the user to see and there is a risk of leaking from the user's options.

  Therefore, in order to solve such a problem, it is desired to provide a digital broadcast receiver and a digital broadcast receiving method capable of estimating a language used for a service in which language codes are not multiplexed.

  A digital broadcast receiver according to an embodiment of the present invention determines a language used for a service based on a reception unit that receives a digital broadcast signal and a character code related to the receivable service included in the received digital broadcast signal. Estimating means for estimating.

  Further, the digital broadcast receiver according to one embodiment of the present invention defines, for each language, a designation unit that designates a language and a range in the character code table that includes characters used in the language. It is good also as a structure provided with the memory | storage means to memorize | store. The estimation means may be configured to compare a character code related to a receivable service with a range corresponding to the designated language designated by the designation means, and to estimate the language used by the service based on the comparison result.

  In one embodiment of the present invention, the estimation means estimates that the language used for the service is the specified language when all of the character codes related to the receivable service are included in the range corresponding to the specified language. It is good.

  In addition, the digital broadcast receiver according to the embodiment of the present invention includes a determination unit that determines an arrangement order of a list of receivable services based on an estimation result by the estimation unit, and a service that is arranged in the determined order. It is good also as a structure provided with the display means to display a list.

  Further, in one embodiment of the present invention, the display means ranks the service estimated by the estimating means that the language used matches the specified language in the list above the service broadcast in a language other than the specified language. It is good also as a structure displayed side by side.

  In one embodiment of the present invention, the display means includes a service in which a language code corresponding to the specified language is multiplexed as information indicating the used language in the list, and the used language matches the specified language by the estimating means. Then, it is good also as a structure which arranges and displays on the upper rank rather than the estimated service.

  In one embodiment of the present invention, the character code relating to the receivable service is, for example, the character code of the service label of the service included in the digital broadcast signal received by the receiving means.

  Also, a digital broadcast receiving method according to an embodiment of the present invention includes a reception step of receiving a digital broadcast signal, and use of the service based on a character code related to a receivable service included in the received digital broadcast signal. An estimation step for estimating a language.

  According to an embodiment of the present invention, a digital broadcast receiver and a digital broadcast reception method capable of estimating a language used for a service in which language codes are not multiplexed are provided.

It is a block diagram which shows the structure of the digital broadcast receiver which concerns on one Embodiment of this invention. It is a figure which shows the data structure of DRM30 roughly. It is a figure which shows the data structure of DRM30 roughly. It is a figure which illustrates the station list displayed on the monitor of the digital broadcast receiver concerning one embodiment of the present invention. It is a figure which shows the example of a screen explaining the rearrangement of the service label in one Embodiment of this invention. It is a figure which shows the flowchart of the priority determination process performed in one Embodiment of this invention. It is a conceptual diagram for demonstrating the estimation method of the language of the selection service which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, as an embodiment of the present invention, a digital broadcast receiver capable of receiving and processing a DRM radio broadcast (DRM broadcast signal) will be described as an example.

  FIG. 1 is a block diagram showing a configuration of a digital broadcast receiver 1 according to an embodiment of the present invention. The digital broadcast receiver 1 according to the present embodiment is, for example, an in-vehicle device mounted on a vehicle traveling on a road. As shown in FIG. 1, an MPU (Micro Processing Unit) 10 and a ROM (Read Only Memory). 11, a RAM (Random Access Memory) 12, an operation unit 13, an antenna 14, a tuner 15, an OFDM demodulator 16, a digital audio demodulation circuit 17, a D / A converter 18, a speaker 19, and a monitor 20. Note that FIG. 1 illustrates main components necessary for the description of the present embodiment, and some components such as a casing that is a general component for a digital broadcast receiver are illustrated. Omitted where appropriate.

  The digital broadcast receiver 1 is not limited to a vehicle-mounted device, but includes, for example, a smartphone, a feature phone, a PHS (Personal Handy phone System), a tablet terminal, a notebook PC, a PDA (Personal Digital Assistant), a PND (Portable Navigation Device), and a portable game machine. Such a portable terminal may be used.

  For example, when an engine is started on a vehicle, power is supplied from a battery (not shown) to various circuits of the digital broadcast receiver 1 through a power line. After the power is supplied, the MPU 10 reads the control program stored in the ROM 11, loads it into a work area (for example, the RAM 12), and executes the loaded control program, thereby controlling the entire digital broadcast receiver 1.

  The operation unit 13 is an operation interface that receives an operation input by a user, and includes a mechanical key provided on the operation panel surface. The user can select the service of the desired station, for example, by operating the operation unit 13 while referring to the information displayed on the monitor 20. The monitor 20 may be a touch panel monitor. In this case, the user can also select the service of the desired station by a touch operation on the monitor 20.

  The antenna 14 receives a DRM broadcast signal. The DRM broadcast signal is composed of an MSC (Main Service Channel), an FAC (Fast Access Channel), and an SDC (Service Description Channel). The MSC includes an audio service and a data service. The FAC includes channel parameters necessary for decoding and service parameters necessary for channel selection. The SDC is data not included in the MSC and FAC, and includes a service label and service linking information. For specific DRM standards and specifications, for example, “Digital Radio Mondiale (DRM); System Specification (ETSI ES 201 980 V4.1.1 (2014-01))”, “DRM Introduction and Implementation Guide (Revision 2 September) 2013, www.drm.org).

  In the DRM radio broadcast standard, a language code indicating a service language can be arbitrarily multiplexed and broadcast on a DRM broadcast signal. There are two types of language codes to be multiplexed. Here, the language code will be described using the DRM 30 as an example.

  One of the language codes is included in the FAC. Hereinafter, for convenience of description, the language code included in the FAC is referred to as “language code (FAC)”. FIG. 2 schematically shows the data structure of the DRM 30. The language code (FAC) will be described with reference to FIG.

  In the DRM broadcast signal, the transmission super frame is repeatedly broadcast. As shown in FIG. 2, each transmission frame included in the DRM broadcast signal includes one FAC block. The DRM 30 is broadcast in robustness modes A to D, and each FAC block includes channel parameters and service parameters.

  As shown in FIG. 2, the service parameters include a service ID, a short ID, a language code (FAC), and the like. The service ID is a unique number for identifying the service. The short ID is a number for identifying the service within the channel. The language code (FAC) is a number associated with each language. For example, “1” in the language code (FAC) indicates Arabic, and “2” indicates Bengali.

  The other language code is acquired from the data entry type 12 of the SDC, and is three alphabetic characters for identifying the language defined in ISO 639-2. Hereinafter, for convenience of explanation, this language code is referred to as “language code (ISO 639-2)”. FIG. 3 schematically shows the data structure of the DRM 30. The language code (ISO639-2) will be described with reference to FIG.

  Each transmission superframe that is repeatedly broadcast with the DRM broadcast signal includes one SDC block, as shown in FIG. The total amount of data for one channel broadcast by SDC may not fit in one SDC block. Therefore, the number of transmission superframes transmitted before the next SDC block having the same content is broadcast is notified by an AFS (Alternative Frequency Switching) index of each SDC block.

  There are dozens of types of SDC data. Each data is distinguished by the data entry type. One data field included in one SDC block includes a plurality of data entries.

  For example, the data entry type 1 includes a short ID, a service label, and the like. The data entry type 12 includes a country code, a short ID, a language code (ISO 639-2), and the like. The service label is text information for allowing the user to recognize the service, and has a maximum of 16 characters.

  Each data entry type of the SDC has a transmission status indicating whether broadcasting is essential or optional (ETSI ES 201 980). For example, data entry type 0 is a description of multiplexing and transmission status is mandatory. Therefore, data entry type 0 is included in all SDC blocks. In addition, the transmission status of the data entry type 1 and the data entry type 12 is arbitrary. However, the service label included in the data entry type 1 is text information for identifying a service when the user selects a channel, and is broadcast by almost any service though it is optional.

  Here, the description returns to the digital broadcast receiver 1. The MPU 10 outputs a reception control signal to the tuner 15 in accordance with the channel selection operation on the operation unit 13.

  The tuner 15 extracts an RF (Radio Frequency) signal from the DRM broadcast signal (broadcast radio wave) that has arrived at the antenna 14 based on the reception control signal received from the MPU 10 and performs quadrature demodulation to obtain a real axis component (I (In Phase ) Component) and an imaginary axis component (Q (Quadrature Phase) component) to obtain a complex signal (IQ signal) represented by a complex number. Tuner 15 outputs this IQ signal to OFDM demodulator 16.

  The OFDM demodulator 16 decodes the COFDM multiplexed signal from the IQ signal input from the tuner 15 and extracts and analyzes data necessary for channel selection such as FAC and SDC. The OFDM demodulator 16 outputs the FAC and SDC decode data obtained as a result of the analysis to the MPU 10.

  The MPU 10 analyzes the FAC and SDC decode data input from the OFDM demodulator 16 and determines a service to be output and reproduced in accordance with the specifications of the digital broadcast receiver 1. Then, the MPU 10 controls the OFDM demodulator 16 to decode the audio stream of the service to be output and reproduced.

  The OFDM demodulator 16 decodes the audio stream under the control of the MPU 10 and converts it into a digital audio signal (for example, a SPDIF (Sony Philips Digital InterFace) signal). The OFDM demodulator 16 outputs the converted digital audio signal to the digital audio demodulation circuit 17.

  The digital audio demodulation circuit 17 demodulates the digital audio signal and outputs it to the D / A converter 18.

  The D / A converter 18 D / A converts the demodulated digital audio signal input from the digital audio demodulation circuit 17 and outputs it to the speaker 19. As a result, the service of the desired station is output and reproduced from the speaker 19.

  Next, the station list will be described. The station list is a database having a list structure that collects information on all services that can be received at the present time. Specifically, the MPU 10 provides services to the user on the HMI (Human Machine Interface), information necessary for channel selection, such as frequency and service ID, based on the FAC and SDC decode data input from the OFDM demodulator 16. A station list in which attribute information such as a service label and language / program type for recognition is associated with each service is created and stored in a predetermined storage medium such as the RAM 12.

  FIG. 4 shows an example of the station list displayed on the monitor 20. As shown in FIG. 4, in the station list, service labels of receivable services are displayed side by side. The user can select the service by moving the focus to the service label of the service of the desired station using the operation unit 13 and performing a determination operation or touching the service.

  Note that it is difficult to increase the size of the monitor 20 due to size restrictions of the digital broadcast receiver 1. Therefore, it is difficult to fit all the services included in the station list on one screen. Therefore, in the example of FIG. 4, the user can browse all services only by performing a screen scroll operation. In the present embodiment, five services can be displayed on one screen. For convenience of explanation, a screen on which the top five services are displayed is referred to as a “top screen”.

  The higher the services in the station list, the smaller the amount of screen scrolling required. Here, considering that the operation of the vehicle-mounted device is restricted during driving of the vehicle, the top screen service and the higher-level service displayed on the monitor 20 with a small screen scroll amount have a chance to be noticed by the user. It is thought that there are many. That is, it can be considered that the services arranged in the higher rank are more easily noticed by the user and have less risk of being leaked from the user's options.

  In view of this, the station list can be rearranged according to the conditions specified by the user. FIG. 5A to FIG. 5C show examples of screens for explaining the rearrangement of services.

  The user can specify a language via a GUI (Graphical User Interface) displayed on the monitor 30 as a service sorting condition on the station list. FIG. 5A illustrates a station list when there is no designated language. FIG. 5B illustrates a conventional station list when the designated language is Hindi, and FIG. 5C illustrates a station list according to the present embodiment when the designated language is Hindi.

  When there is no designated language, the services are sorted in an order according to conditions other than the designated language (for example, the specifications of the digital broadcast receiver 1). On the top screen illustrated in FIG. 5A, service labels SE1, SH1, SE2, SH2, and SH3 are sequentially displayed. The service label with the symbol E indicates a service label of a service in which English language codes are multiplexed (that is, the language used is English). The service label with the symbol H indicates a service label of a service in which a Hindi language code is multiplexed (that is, the language used is Hindi).

  Service labels SH1, SH2, SH3, SH4, and SE1 are sequentially displayed on the top screen of the conventional example of FIG. That is, in the conventional example of FIG. 5B, the services in which Hindi language codes are multiplexed are sorted and displayed so as to be preferentially arranged in the upper rank. As described above, the Hindi language is designated on the top screen of the conventional example in FIG. 5B, so that it was not displayed on the top screen in FIG. 5A in addition to the service labels SH1 to SH3. A service label SH4 is also displayed. Therefore, it becomes easier for the user to find more services broadcast in Hindi than in the case of FIG.

  However, in the conventional example of FIG. 5B, even if the service is actually broadcasted in Hindi, those that are not multiplexed with language codes are not sorted so that they are arranged preferentially. . That is, services that do not have language codes multiplexed are not necessarily arranged at the top of the list even if the language used is Hindi, so there is a possibility that they will be omitted from the user's options.

  Therefore, the digital broadcast receiver 1 according to the present embodiment holds a code list in which language codes and character code ranges are associated with each other. The code list is held in the ROM 11, for example. Table 1 shows an example of a code list.

  As shown in Table 1, the code list is a list in which “language”, “language code (FAC)”, “language code (ISO639-2)”, and “character code range” are associated with each other. “Language” is a text defined in the specifications of the digital broadcast receiver 1, and is displayed on each service label when sorting is performed in a specified language as illustrated in FIG.

  The “character code range” is a range in the character code table, and indicates a range including characters used in the language. The “character code range” is defined for each language. In the DRM radio broadcast standard, UTF-8 is adopted as a character encoding format. Therefore, the “character code range” defines a range in the character code table of UTF-8. When the character code is a system other than UTF-8, the “character code range” converts the range in the character code table of the system other than UTF-8 to the range in the character code table of UTF-8. It has become.

  Table 2 shows an example of the station list.

  As shown in Table 2, the station list associates “No.”, “Service ID”, “Frequency”, “Service Label”, “Language Code (FAC)”, and “Language Code (ISO639-2)”. List. “No.” indicates an address in the station list. “Frequency” is information necessary for channel selection and may be plural depending on the operation of AFS.

  In the station list, the “service label” is held as an array of character codes (for example, UTF-8 in hexadecimal notation). As an example, consider the service label “NEWS TODAY”. “NEWS TODAY” is held as an array of character codes consisting of 4E, 45, 57, 53, 20, 54, 4F, 44, 41, 59.

  When a language is designated as a station list sorting condition, the MPU 10 selects one service from all the services held in the station list in a predetermined order, and selects the selected service (hereinafter, for convenience of explanation). The priority determination process shown in FIG. 6 is executed. When the MPU 10 executes the priority determination process shown in FIG. 6 for all services, the MPU 10 performs a sorting process according to the execution result.

[S11 in FIG. 6 (Language Code Presence Determination)]
In this processing step S11, it is determined whether or not the selected service holds at least one of the language code (FAC) and the language code (ISO639-2) in the station list (see Table 2).

[S12 in FIG. 6 (judgment determination of specified language)]
This processing step S12 is executed when it is determined in processing step S11 (determination of presence / absence of language code) that the selected service holds the language code (S11: YES). In this processing step S12, it is determined whether or not the language code held in the selected service matches the designated language.

[S13 in FIG. 6 (Classification to First Group)]
This processing step S13 is executed when it is determined in processing step S12 (designated language matching judgment) that the language code held in the selected service matches the designated language (S12: YES). In this processing step S13, the selected service is classified into the first group having the highest priority. When the selected service is classified into the first group, the priority determination process being executed for the selected service is completed, and the execution of the priority determination process for the next service is started.

[S14 in FIG. 6 (Determination of Service Label Presence)]
This process step S14 is executed when it is determined in process step S11 (determination of presence / absence of language code) that the selected service does not hold the language code (S11: NO). In this processing step S14, it is determined whether or not the selected service holds a service label.

[S15 in FIG. 6 (value setting)]
This process step S15 is executed when it is determined in process step S14 (service label presence / absence determination) that the selected service holds a service label (S14: YES). In this processing step S15, the value i is set to “1”.

[S16 in FIG. 6 (determination of the number of characters)]
In this processing step S16, it is determined whether or not the number of characters of the service label of the selected service is less than the value i. When the processing step S16 is executed for the first time, the value i is set to “1” in the processing step S15 (value setting).

[S17 in FIG. 6 (comparison determination with range in character code table)]
This processing step S17 is executed when it is determined in processing step S16 (determination of the number of characters) that the number of characters of the service label of the selected service is not less than the value i (S16: NO). In this processing step S17, the character code range corresponding to the specified language is acquired from the code list shown in Table 1. Next, the acquired character code range is compared with the character code of the i-th character of the service label of the selected service, and it is determined whether or not the character code falls within the character code range based on the comparison result. The

[S18 in FIG. 6 (value setting)]
In this processing step S18, it is determined in processing step S17 (comparison determination with the range in the character code table) that the character code of the i-th character of the service label of the selected service falls within the character code range corresponding to the designated language. When it is done (S17: YES), it is executed. In this processing step S18, the value i is incremented by one. The priority determination process shown in FIG. 6 returns to process step S16 (determination of the number of characters) when the value i is incremented by one.

[S19 in FIG. 6 (classification to the second group)]
This processing step S19 is executed when it is determined in processing step S16 (determination of the number of characters) that the number of characters of the service label of the selected service is less than the value i (S16: YES). In other words, this processing step S19 is executed when the character codes of all the characters constituting the service label of the selected service fall within the character code range corresponding to the designated language.

  In the selection service, since the character codes of all characters constituting the service label fall within the character code range corresponding to the designated language, there is a high possibility that the language used matches the designated language. Therefore, in this processing step S19, it is estimated that the language used for the selected service matches the designated language.

  FIG. 7 is a conceptual diagram for explaining a method of estimating the language used for the selection service. In FIG. 7, two areas enclosed by rectangles indicate the character code ranges of languages A and B defined in the character code table, respectively. Each blot indicates the position of the character code in the character code table and the position of the character code of each character constituting the service label of the selection service.

  In the example of FIG. 7, the character codes of all characters constituting the service label of the selected service fall within the language A character code range. On the other hand, some character codes do not fall within the character code range of language B. Therefore, in the example of FIG. 7, it is estimated that the language used for the selected service matches language A.

  In this processing step S19, the selection service estimated that the language used matches the designated language is classified into the second group having the second highest priority after the first group. When the selected service is classified into the second group, the priority determination process executed for the selected service is completed, and the execution of the priority determination process for the next service is started.

[S20 in FIG. 6 (classification to the third group)]
This processing step S20 is performed when it is determined in processing step S12 (specified language matching determination) that the language code held in the selected service does not match the specified language (S12: NO), or processing step S14 (service When it is determined that the selected service does not hold the service label (in the presence / absence determination of label) (S14: NO), or the service of the selected service in processing step S17 (comparison determination with the range in the character code table) This is executed when it is determined that the character code of the i-th character of the label does not fall within the character code range corresponding to the designated language (S17: NO). In other words, this processing step S20 is performed when the language code that does not match the designated language is held in the selected service, or the language code is not held in the selected service and the service label is not held or the service This is executed when the label is held but there is a character code of the service label that does not fall within the character code range corresponding to the specified language.

  In this processing step S20, the language used for the selected service cannot be estimated, or some of the character codes constituting the service label of the selected service do not fall within the character code range corresponding to the specified language. Therefore, it is estimated that the language used for the selected service does not match the specified language.

  In this processing step S20, the selected service is classified into the third group having the lowest priority. When the selected service is classified into the third group, the priority determination process being executed for the selected service is completed, and the execution of the priority determination process for the next service is started.

Thus, in the priority determination process shown in FIG.
1st group: Service that holds a language code that matches the specified language 2nd group: Service that is estimated that the language used matches the specified language 3rd group: Other services (estimated that the language used does not match the specified language) Service)
The priority of each service is determined in this order.

  The MPU 10 sorts all the services included in the station list so that they are arranged in the order of the first, second, and third groups, and causes the monitor 20 to display a list of services arranged in the sorted order (that is, the station list). . Note that the order of services within each group follows, for example, the specifications of the digital broadcast receiver 1 (for example, in order of frequency, alphabetical order, etc.).

  When the priority determination process shown in FIG. 6 is executed, service labels SH1, SH2, SH3, SH4, and SH1 ′ are arranged in order on the top screen of the station list as illustrated in FIG. 5C. Is displayed. The service label SH1 'is a service classified into the second group, that is, a service estimated that the language used matches the designated language (Hindi). Thus, in addition to the service labels SH1 to SH4, there is a high possibility that the language used in the top screen in FIG. 5C is not displayed on the top screen in FIG. 5B is Hindi. A service label SH1 ′ is also displayed. Therefore, it becomes easier for the user to find more services broadcast in Hindi than in the case of FIG.

  The above is the description of the exemplary embodiments of the present invention. Embodiments of the present invention are not limited to those described above, and various modifications are possible within the scope of the technical idea of the present invention. For example, the embodiment of the present application also includes contents appropriately combined with examples and the like clearly shown in the specification or obvious examples.

1 Digital broadcast receiver 10 MPU
11 ROM
12 RAM
13 Operation unit 14 Antenna 15 Tuner 16 OFDM demodulator 17 Digital audio demodulation circuit 18 D / A converter 19 Speaker 20 Monitor

Claims (14)

Receiving means for receiving a digital broadcast signal;
An estimation means for estimating a language used by the service based on a character code related to the receivable service included in the received digital broadcast signal;
Comprising
Digital broadcast receiver. A specification means for specifying a language;
Storage means for defining and storing, for each language, a range in the character code table that includes characters used in the language;
With
The estimation means includes
Comparing the character code relating to the receivable service with the range corresponding to the designated language designated by the designation means, and estimating the language used for the service based on the comparison result;
The digital broadcast receiver according to claim 1. The estimation means includes
When all of the character codes related to the receivable service are included in the range corresponding to the specified language, it is estimated that the language used for the service is the specified language.
The digital broadcast receiver according to claim 2. A determination unit that determines an arrangement order of the list of receivable services based on an estimation result by the estimation unit;
Display means for displaying a list of services arranged in a determined order;
Comprising
The digital broadcast receiver as described in any one of Claims 1-3. The display means includes
In the list, the services estimated by the estimating means that the language used matches the specified language are displayed side by side above services broadcast in a language other than the specified language.
The digital broadcast receiver according to claim 4, which refers to claim 2. The display means includes
In the list, services in which a language code corresponding to the designated language is multiplexed as information indicating the language used are displayed in a higher order than the services estimated by the estimating means that the language used matches the designated language. To
6. A digital broadcast receiver according to claim 4 or claim 5 that cites claim 2. The character code relating to the receivable service is:
The character code of the service label of the service included in the digital broadcast signal received by the receiving means,
The digital broadcast receiver as described in any one of Claims 1-6. A receiving step for receiving a digital broadcast signal;
An estimation step of estimating a language used by the service based on a character code related to the receivable service included in the received digital broadcast signal;
including,
Digital broadcast receiving method. Includes a specification step to specify the language,
In a predetermined storage medium, a range in the character code table and including a character used in the language is defined and stored for each language,
In the estimation step,
Comparing the character code related to the receivable service with the range corresponding to the designated language designated in the designation step, and estimating the language used for the service based on the comparison result;
The digital broadcast receiving method according to claim 8. In the estimation step,
When all of the character codes related to the receivable service are included in the range corresponding to the specified language, it is estimated that the language used for the service is the specified language.
The digital broadcast receiving method according to claim 9. A determination step for determining an arrangement order of the list of receivable services based on an estimation result in the estimation step;
A display step for displaying a list of services arranged in a determined order;
including,
The digital broadcast receiving method according to any one of claims 8 to 10. In the display step,
In the list, the services estimated in the estimating step that the language used matches the specified language are displayed side by side above services broadcast in a language other than the specified language.
The digital broadcast receiving method according to claim 11, which quotes claim 9. In the display step,
In the list, services in which a language code corresponding to the designated language is multiplexed as information indicating the language used are arranged at a higher rank than the service in which the language used is estimated to match the designated language in the estimation step. indicate,
13. The digital broadcast receiving method according to claim 11 or claim 12 that cites claim 9. The character code relating to the receivable service is:
The character code of the service label of the service included in the digital broadcast signal received in the receiving step,
The digital broadcast receiving method according to any one of claims 8 to 13.

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